tunnel Archives - Page 2 of 2

The longest railway tunnel in the world

September 27, 2025 by usatoday24

China is the name that comes to mind to Talk about megaconstructions. The country has faced some of the more complex works of these last years and has pharaonic projects such as the New largest dam in the world or the more complicated tunnel. In this matter, Europe is not far behind with two projects that want to be the longest tunnels in the world in different fields are fields: that of the Greater tunnel submerged, with 120 kilometersand the longest rail tunnel in the world: Brennero base. A 2006 project that finally gives results. Brennero’s base tunnel. We are talking about a work that has been dilated a lot, with several changes in estimated plans and dates of completion. Construction officially began in 2007but the excavations did not start until 2015. It is part of the European Scandinavia-Mediterranean (or Scan-Med) and will have the Munich-Verona axis. The objective is to facilitate communication between countries by saving an imposing natural obstacle: Alps. This is something important in order to improve Commercial and passenger network in Europe because trains are becoming the tool for depend less on the plane in full way to decarbonization And, in addition to allowing a faster connection between Germany and Italy, much of the Alpine merchandise traffic from the road to the railroad will be transferred. The idea is less traffic jams on roads, less CO₂ emissions and, obviously, a Acceleration in logistics between northern and southern Europe. Colossal. The characteristics From the tunnel, they impose. In total, it will have a length of 64 kilometers, which will make it, according to its drivers, into the longest railway tunnel in the world when it enters into operation. The main section between the Italian city of Fortezza and the Austrian Innsbruck will have about 55 kilometers in length and will be composed of two parallel tunnels with a single route each. They will be connected every 333 meters by service tunnels to allow rapid evacuation in case of failure and something unique is that it will be a “flat” tunnel, with almost the entire journey to about 794 meters above sea level. This is necessary to allow operating the trains with lower consumptionsince in some current paths through the Alpine region there are trains that need several locomotives due to the inclination of the road. Beyond transportation. The idea is that it allows the passage of merchandise trains of up to 3,000 tons and passenger trains that can circulate at high speed (250 km/h compared to the current 50 km/h average due to the demands of the land), but since they are piercing the mountain, they will take advantage of something else. A dozen meters under the main galleries, there will be another five -meter diameter tunnel and others almost 56 kilometers long. Will be what is known as a Exploratory Tunnela channel that will allow geological research in that mountainous area, in addition to facilitating a drainage of groundwater. State and next steps. At first, the bridge was going to be ready by 2025, but the estimates were changing. The Alps is a complex area Due to the presence of failures and groundwater, which has forced both excavation methods and solutions to pass under rivers and the isarco. Administrative delays have also played a role in this story because Austria and Italy are building their respective sides of the tunnel. And the Covid-19 pandemic forced the work. All this raised the initially planned budget of 6,000 million euros to almost 8.4 billion, but recently we have witnessed a green outbreak. Using excavators like ‘Flavia‘That they allow digging while the tunnel has, on September 18 the Italian and Austrian tunneladoras They found themselvesachieving the underground connection between the two countries. It was a milestone, but there is still work to do to cover the tunnels, display rail infrastructure and add both technical equipment and ventilation and signaling systems. Piercing the Alps. The view is set in 2032, when it is estimated that the works will end and the tunnel can be exploited to move goods and passengers. Now, although colossal, it is not the only project that is currently under development in the Alpine region. Interestingly, several compete for being the longest railway tunnel in the world. The other great exponent of this corridor is that of Mont Cenis That, with 57.5 kilometers, Lyon will join with Turin. There is also the San Gardardo base with 57.1 kilometers (It will link the Swiss towns of Erstfeld and Bodio in Italy) and more ‘modest’ projects such as those of Koralm (32 km), Semmering (27 km), Ceneri (14.5 km) and Lötschberg (34.6 km). Of course, the objective is the same: to facilitate transalpine transport to reduce CO₂ emissions and speed up the movement of both travelers and merchandise. We will see if, now, construction deadlines are fulfilled. Images | BBT-SE In Xataka | Japan created an artificial peninsula to make an airport. You will soon have an submarine airport

Aemet at last at the end of the extreme heat tunnel in Spain. The only problem is what comes in place

July 7, 2025 by usatoday24

During the last weeks, the successive hot episodes (including the heat wave at the end of June and early July) have alternated with the arrival of vaguades that offered a certain thermal relief. A relief loaded with storms and hail, but relief after all. However, the dynamics of recent weeks seem to have broken. Postbile Dana. Meteorological models foresee the possible formation of a DANA, an isolated depression at high levels. This phenomenon, Experts of Meteoredthis phenomenon would bring more hailstorms in addition to winds of consideration. Two masses of air. The arrival of the Dana would also occur in a context also different from what we had seen in a June where the heat was extended by almost the entire peninsula. The first days of this are mana are characterized however by A two -speed Spain: With a mass of cold air installed in the peninsular north and a warm air dominating the center and the south. The long -awaited thermal relief is therefore produced at two veliocities, more quickly in the north (where temperatures have already moderated) and more slowly in the south, where the thermometers will move away from the 40º mark but with a slower stabilization. Uncertain weekend. That would be the context in which Dana could make an appearance. There is still uncertainty about how the “Descolgue” of this area of low pressures will be and its entry into the Peninsula, but the simulations indicate that the arrival of this phenomenon will occur between Friday 11 and Sunday 13. More storms, more hail. This leaves us a panorama of uncertainty for the end of this week: if this arrival of the DANA occurs the instability could be high and that means that we could see a new rough storms with rainfall and strong winds. According to the modelsSaturday will be the day when it is noticed in our environment. According to these same models, the most affected areas will be the north third, the northeast peninsular and part of the Mediterranean coast. A summer of uncertainties. The question now is to know what will happen after this week of relief. While the warm episodes of the last month and a half had been interspersed for days of storms and temperature reduction, these stops in the thermal escalation had been rather brief. This week however the arrival of several troughs, including an associated with the possible Dana could involve a somewhat more marked reduction in temperatures. For now it is soon to know what will happen. The Monthly prediction From the State Meteorology Agency (AEMET) points out that we still have hotter weeks than usual for these dates, between 3rd and 5th warmer than the average. The quarterly forecasts Aemet also indicates that we have several warm months ahead: 70% probability that it is. In Xataka | “Clouds of fire”, the phenomenon that makes escape from sixth generation fires can make it impossible Image | ECMWF

The amazing proposal of the Emirates-Indian Tunnel

May 2, 2025 by usatoday24

When the United Arab Emirates is treated, the pulse does not tremble. There are to prove it Burj Khalifathe largest skyscraper on the planet, or projects such as the Luna -shaped resort of Dubai u One Za´abelendowed with the largest cantilever building ever built. Any of the three pales if compared, however, with the structure proposed by National Advisor Bureau Limitedcompany based in MASDAR. A gigantic underwater tunnel that would cover around 1,800 kilometers that separate two port areas from Arab Emirates and India. The infrastructure is in the concept phase, but stands out for its ambition, dimensions … and the interesting possibilities that it would open in the region. What does it propose? A draft mega -structure. The proposal by National Advisor Bureau consists of building a huge submarine tunnel that allows direct United Arab Emirates (EAU) and the remaining countries that make up the remaining. Cooperation Council of the Arab states of the Gulf – organism that integrates half a dozen nations from the Middle East – with India. To be more precise, the project is drawn between two coastal points separated by about 1,800 kilometers: Fujairah and Mumbaion the west coast of India. And what would the duct be like? Submarine, drawn under the waters of the Arabic sea and entering the Gulf of Oman. To better illustrate the infrastructure in mind, National Advisor Bureau elaborated several years ago A series of videos and infographics in which the proposal clearly appreciates: formed by two concrete ducts that pass in parallel and remain submerged, although in suspension, tied to a series of floating structures. Another alternative would go to tie them with fasteners to the bottom of the sea. The idea of its designers is to keep the tunnels at a depth that does not interfere with maritime traffic and keep them safe from inclement. His pontoons would also be separate enough to allow the passage of surface ships, through the waters of the Indian. As for the tubes, they would be built to be resistant to the corrosion of salt water and pressure. What would the tunnels be used for? For the transport of passengers, tourists and workers who wish to move between United Arab Emirates and India, but also merchandise and strategic supplies. The infographics of National Advisor Bureau show that each duct would be divided in turn into four large compartments: one for trains, another for goods and two lower, as a pipes, which would be dedicated to oil or gas and water flow. The objective is to export oil from the Emiratí port of Fujairah to India through the pipeline and import the excess water of the Narmada river, north of Mumbai. Its authors argue that Narmada usually overflows during the monsoon season. The project does not rule out that oil or gas can be used beyond India, China or Pakistan, or the construction of a floating fuel station to supply ships between pontones. What kind of train do we talk about? One fast. Very fast. The authors of the project explain that within the tunnel a vacuum would be created that would allow the use of “ultra -granted” railroads, capable of reaching speeds between 600 and 1,000 kilometers per hour (km/h). It is an ambitious objective, taking into account that Chinese Maglev trains point to 600 km/h and 1,000 km/h It is the objective of its modern Hyperloop, still in the test phase. Since the distance between Mumbai and the Fujairah station is around 1,800 kilometers, the journey could be made between two and four hours. The company even speaks of another possible route, between Fujairah and the port of Gawader, in Pakistan, that the submerged infrastructure would allow to cover in one hour. At what point is it? In the concept. The idea was released a few years ago National Advisor Buerau, behind others equally media projectsas UAE-Fergwhich raises IACEBERGS towing From Antarctica to the coast of Fujairah to take advantage of them as new fresh water sources in the region. The proposal of the submarine tunnel began to sound before the pandemic, towards 2018 either 2019as a concept, and achieved attract interest of International media. Since then his information flow has gone less. Of one of the latest news They echoed in 2021 #Swajya or India Infrahubwho collected how Abdulla Alsehhi, director of Nationa Advisor had defended the advantages of the structure in a strategic conclave focused on relations between Arab Emirates and India. The entrepreneur and engineer The potential stands out of the submarine project to improve bilateral trade between both nations. Image | PRNEWSFOTO In Xataka | The construction of The Line, the “skyscraper” of 170 km from Saudi Arabia, advances: a new video shows it In Xataka | Nicaragua has a project to revolutionize global maritime trade: a channel that almost four -year -old

“Train” in a nineteenth century tunnel

April 17, 2025 by usatoday24

Supercars are no longer enough. What really removes the hiccups are hyper -sports. Combine the SUPPORTIVE CLASS with technologies and benefits of the Formula 1like him McLaren P1 With Kers and Drs. But if there is a category that is taking off the beast, it is that of the electric with benefits that They seem taken from a video game. Specifically, one English who could have Batman in his garage. It is the McMurtry Spéirling, and its secret is a tuning in a railway tunnel of 1897. Craziness. The McMurtry Spéirling, or Spéirling Electric Hypercar, was revealed in the prestigious Goodwood Speed event of 2022, and there he got some records. Before that, let’s spend the technical record of this car that is not as attractive as a Bugatti Veyronthe aforementioned McLaren P1 or its maximum electric competitor, the RIMAC Neverabut that is a rex tyrannosaurus with lamb skin. Of a lamb 3.5 meters long, 1.7 wide and barely 1.1 high. It has two electric motors that produce a power of 746 kW in the rear wheels, equivalent to about 1,000 hp. The weight is about 1,000 kg, which together with that engine guarantees a huge force. How much? As an acceleration of 0 to 100 km/h in 1.4 seconds or 0 to 230 km/h in less than 5 seconds. Record car. It does not run “much” because it is limited to 305 km/h, so that engine could give much more of itself, and is equipped with a 60 kWh battery that they wait to expand 100 kWh at some point, increasing to 1,200 kg the weight of the vehicle. But with what we have now in hand, we can talk about a car that is leaving the bar high. Very high. At the Goodwood Festival of its debut, the McMurtry Spéirling managed to spray the upload record of its traditional 1.89 -kilometer hill circuit with a time of 39.08 seconds. There have not only been supercoches and hypercoches, but also formula 1 like that of 1998 Nick Heifield. With the McLaren MP4/13, he nailed the clock in 41.6 seconds. In 2019, an electric prototype, the Volkswagen ID.R. He lowered it to 39.9 seconds, and it was the brand that prevailed. Since then, we have seen McMurtry Spéirling making All types of cars bite the dustincluding the imposing Ferrari Laferrari With an atmospheric and 800 hp V12 with Kers of 163 hp or spraying the Mercedes-Am One record in Hockenheim lowering time by 14.1 seconds. The test tunnel. And the secret of this achievement is the wind tunnel. High performance cars are analyzed in wind tunnels in which their aerodynamics are tested. They are cameras in which vehicles are static and it is the air that flows on them, allowing engineers and designers to test aerodynamics. In the case of McMurtry Spéirling, the thing is different because in its wind tunnel, it moves at high speed. The reason? Use a tunnel that could go out in any Batman movie: the Catesby tunnel. It is a railway tunnel of the Victorian era that was built in 1897 and has a line of 2.7 kilometers long and 8.2 meters wide. It is no longer used for its original purpose, and from its conversion It has become an ideal test line for two reasons. The first is because it has constant climatic conditions, which allows engineers to test the car in an environment in which they can develop systematic and precise tests. The McMurtry equipment uses equipment as pressure sensors around the vehicle and high -speed cameras, but it is best to be moving, they can put elements such as wheels, the damping or the great secret of this car under the magnifying glass: the Downforce or ‘soil effect’. Fans, your secret. Because … yes, in a car import all the elements, but when we talk about speed (and that is where the F1 are specimens), it is not so much about the strength of the engine, but how much the car can stick to the ground thanks to the aerodynamics to accelerate better or take a passage through curve faster. And if we see any video of the McMurtry Spéirling, something that attracts attention is that, both in motion and standing before accelerating, it lifts a trail of dust. There is his secret: he has two rear fans that generate a force of up to 2,000 kg. This presses the car against the ground, causing it to leave a Scalextric car and getting a great speed in the curves. It makes a F1 look slow. To get an idea, that aerodynamic load of 2,000 kg that the McMurtry Spéirling has from a stop is the same that achieves a formula 1 when it goes to 250 km/h. And, speaking of formula 1, the video that we leave below is one of those that make a smile of disbelief: In it, we can see spéirling against the Rimac Nevera and a Red Bull RB8. It is very interesting because the Nevera Rimac, which is another electric one that is in the same category, wins in the first test by tip speed because the spéirling limiter comes into play. In the second test, Spéirling has heated the wheels and gets a more tight victory, and in the third we see another surprising thing. It is a braking test in which we see that the Rimac accelerates and runs a lot, but it is difficult for him to stop. Here, spéirling achieves a performance very similar to that of Formula 1, whose braking is spectacular. And it has merit that even with Liam Lawson behind the wheel, that Red Bull looks like a utility next to the other two. Especially next to the great strong point of spéirling: the acceleration from standing. Do you have a million left? Currently, the McMurtry Spéirling is approved for circuit competitions, such as the GT1 Sports Club, but if at any time it is homologated for use in … Read more

a record submarine tunnel with the largest diameter in the world and a colossal machine to drill it

February 10, 2025 by usatoday24

In the city of Jinan, just over four and a half hours by Beijing’s car, China Railway 14th Bureau Group It is leading the construction of the higher diameter submarine tunnel. When the work is finished, residents and visitors of The capital of Shandong They will be able to move from one side of the Yellow River to another through a two -level road with six lanes in total. But before this happens, workers must complete the drilling tasks they started months ago. Behind this project is a huge tunnelador baptized as “Shanhe” of 163 meters, with a diameter of 17.5 meters and a weight of 5,200 tons. This sophisticated engineering piece left the mounting line in May 2024 and began to function and the aforementioned work in September last year. As Xinhua collectsevery two meters a dozen segments are assembled to form a support ring that separates groundwater, two meters are drilled and the task is repeated. A tunnel to better connect the city of Jinan As the cutting head progresses, several members of the work control parameters such as the movement of the pieces, the advance of the cylinder and the mud level. The machine also needs constant maintenance tasks and even repairs. In this case, specialists direct an army of workers who manipulate hydraulic mechanisms, water pipes and tools for the work to be at the end of this year. “Shanhe” has advanced around 15 meters per day and has exceeded 1,000 meters perforated. This powerful machine has 306 cutters of different types of teeth, designed for higher cutting yield. In addition, it incorporates advanced technology such as a pressurized compound head, main telescopic drive and a telescopic chamber for the excavation tank. But that’s not all. It is also equipped with advanced geological forecast, gas environment monitoring, tool wear detection, synchronous grout detection and an auxiliary support system. China Daily highlights a very interesting fact: 7 out of 10 tunneladoras sold in the world are Chinese, and within the country, 95% of these machines are also of national manufacture. China leads this sector, as also occurs in port infrastructure and Batteries for electric vehicles. With little competition, local production marks the rhythm and consolidates its position in strategic industries, reflecting a strong commitment to self -sufficiency and technological domain in key areas that goes beyond its borders. Images | Xinhua In Xataka | Saudi Arabia is waste so much money in The Line that has entered deficit

the delay in the development of the new wind tunnel generates a domino effect

January 23, 2025 by usatoday24

Aston Martin faces a major challenge heading into the season 2026 of Formula 1year marked by the implementation of new technical regulations that promise to level the grid. The Silverstone team, which has experienced notable growth in recent years, is currently in a technological and structural transition periodwith his eyes fixed on his new wind tunnel of the latest generation, a key piece for your ambitions. However, a delay in wind tunnel calibration process has slowed down the development of the 2026 cargenerating a domino effect that affects both the team and its medium-term planning. Although from January 1, 2025 Aston Martin and all the teams on the Formula 1 grid were authorized to begin work on the design of the new cars, the Silverstone team has decided to wait until its new facility is fully operational to begin that phase of work. . The new wind tunnel, located in the Silverstone Technology Campusis part of the modern facilities that Aston Martin has built to compete at the highest level. Designed to be an essential tool in improving aerodynamic performance, its launch has been delayed due to the complexities of its calibration. This process, led by the engineering director Luca Furbattowas to be completed by the end of 2024, but the work has been extended beyond what was planned. Despite these delays, Aston Martin has chosen not to use the wind tunnel that he has rented for years to mercedes in Brackleywhere his previous cars were developed, including the AMR25 of 2025. The decision to work exclusively at Silverstone responds to a clear strategy: maintaining confidentiality, guaranteeing that the technical solutions for the new car are developed in-house, away from possible leaks, and trusting that their new work tool will provide more and better information for this process. Fernando Alonso reviews the changes in the ARM24 with an engineer Aston Martin Qualitative leap He new Aston Martin wind tunnel it’s not just one significant investment in infrastructurebut also a fundamental pillar for your future. Equipped with the most advanced simulation systems, it promises to offer more precise data that can be correlated with real track conditions. However, as the team recognizes, it will take time to fine-tune the simulations and take advantage of the full potential of this tool. Furthermore, the arrival of Adrian Neweyone of the most brilliant minds in the history of Formula 1reinforces Aston Martin’s expectations. Newey, who will join the team on March 5dedicate much of its time to the development of the 2026 car. Its incorporation, together with other notable technicians such as Andy Cowell and Eric Blandinreinforces the team’s long-term vision. The delay in using the new wind tunnel is not the only challenge facing Aston Martin. The team is also in full transition to official team statusa process that involves designing and manufacturing key components, such as the gearbox, that were previously sourced from Mercedes. Furthermore, the association with the historic manufacturer Sling for the supply of power units exclusively for them from 2026 adds an additional layer of complexity to this restructuring stage. Andy CowellCEO of Aston Martin Performance Technologies, has emphasized the importance of managing all these processes efficiently to avoid compromising performance on the track. “2026 is an opportunitybut not the final goal. We want to build a team that achieves sustained success,” he said in recent statements. The 2025 season will be crucial to consolidate the team’s structure before facing the challenges of 2026. Although the AMR25 will be developed with current resources, the strategic focus is already on the next big technical leap. Cowell insists that the key will be finding a balance between immediate priorities and long-term goals. With a robust technical base, a high-level human team and a constantly evolving infrastructure, Aston Martin seems to be on the right track to compete at the top of the grid. However, time is of the essence and rivals such as Mercedes, Red Bull and Ferrari will not give up in the fight to maintain their dominance.

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