Andres started digging a cave in which he created a bunker because at the age of 14, after an argument with his mother, he often wanted to hide in the cellar to “breathe”. Arguing with his mother, the boy dug underground tunnels to “breathe”. (Photo: Twitter) After choosing a favorable location, the 20-year-old called for help from his friend, who has a pneumatic drill, and together they created a cave about 3 meters deep. Andres reinforced the roof, walls with concrete and columns, then created a cozy atmosphere inside so he could relax with friends in the cellar. The total cost of creating the underground tunnel is only 60 USD. “Andres is determined to get the job done, because he has always loved the job. Since he was a child, he often built small huts and treehouses,” wrote the New York Post. “I have always loved building huts. I live in the countryside and often find a suitable place for me to build a small house,” Andres shared. However, Andres’ hideout sometimes flooded and was regularly visited by insects, spiders and snails, but the amateur builder was not at all shy about this problem. “I have no problem with them. I knew I might have destroyed their home, so I gave them a chance to build a new one,” Andres added. Meanwhile, Andres’ parents show a love for his underground lair. Now it is important that the cellar is verified by the local authorities. The inspectors had to make sure that the shelter met all the safety requirements so that the guy and his friends could hang out in it without endangering their lives. Also related to tunneling, recently, rescue forces in Mexico have just rescued a man who was accidentally trapped in the same tunnel he dug to secretly spy on his girlfriend. To avoid detection, he dug a tunnel for several days to go underneath his girlfriend’s house in Puerto Penasco, Sonora state, on the Gulf of California. After the incident, the new girlfriend told police that she had heard strange noises for weeks before but only thought it was cats. When rescuing, authorities said the victim was drunk and severely dehydrated. After being rescued, this man is currently detained for investigation.

Day after day after school, he used a hoe to expand his cave bit by bit. The speed of “construction” increased dramatically after Canto invited another friend to bring a pneumatic drill, and together they created an extremely unique 3 meter deep cave. The way down to the cave. Accordingly, this cave also looks quite “cool” when it has a living room, bedroom with heating, Wi-Fi network and music system. Canto said he reinforced the roof and walls of the cave with concrete and columns to prevent collapse. The total cost of buying the necessary building materials for this “project” only costs about 60 USD (about 1.4 million VND), Canto revealed. Inside the cave of the Spaniard. Occasionally, his cave also has a bit of trouble dealing with floods and is often visited by insects, spiders and snails. However, the amateur builder is not too concerned about these “uninvited friends” and shares: “There is no problem. Since I have invaded their home, I will have them build a new house on my wall.” A post about Canto’s “dwelling” on social media caught the attention of local officials. After that, the government sent inspectors to Canto’s house to check the strength and safety of the cave. Andres Canto in his cave. Although he doesn’t live all day in the cave, Canto spends a lot of his free time down there. His parents also did not show any objection to the son’s work. Canto said his mother watched the video of the cave and went down to see it herself: “My mother went down there too and said it was smaller than the one in the video.” With this unique idea, if at any time you intend to leave home because you are angry with your parents, but you are afraid of ghosts and dark, Canto has a place to stay… temporarily! Tu Uyen According to New York Post, Zenger News

The tunnel was dug underneath a housing complex in the Yongah Hill refugee center The tunnel with a depth of 3m underground was found on the morning of May 10. The tunnel was built in a few months. This image of the unfinished tunnel shows it as if it was hand-dug and just high enough for a person to crouch in. This is not the first time detention centers have discovered secret tunnels for detainees to escape. Nearly 20 years ago, 23 asylum seekers escaped by tunneling out of Villawood detention center on the outskirts of Sydney. In 2002, about 40 refugees escaped from the Woomera detention center during a protest. According to the Australian border force, Yongah Hill camp is holding about 315 people, of which 175 are foreign nationals whose visas have been canceled by the government and 140 asylum seekers. There are no women or children here. Immigrants to Australia currently have an average detention period of 627 days. Yongah Hill alone is a long-term prison, 73 people have been here for more than 5 years, especially some people have more than 9 years.

This strange tank history was born in the 1960s, when the Swedish army planned to develop a new line of main battle tanks to deal with the Soviet Union. Swedish engineers propose a unique idea when not to use turrets like conventional tanks. The main gun was fixed to the body of the vehicle, but did not have a rotating turret like normal tanks. The engineers argued that the cannon fixed to the hull made it more accurate to fire than the rotating turret. In addition, the use of a turret makes the overall height of the tank significantly reduced, harder to detect on the battlefield, and the low height also makes it harder for the tank to hit the enemy’s fire. Eventually a design was born, called Stridsvagn 103. Sweden wants to develop the Stridsvagn 103 into a high-speed assault and ambush armor vehicle, taking advantage of the superiority of precision firing to destroy, disrupting the enemy tanker formation. The Stridsvagn 103 is fitted with a 105 mm main gun, with an automatic reload system. Because there is no turret, the angle of lift and lowering of the gun is adjusted through a special suspension that can be lifted and lowered when necessary. However, the angle of elevation and lowering of the cannon is quite limited, Stridsvagn 103 cannot shoot from above. The crew must rotate the entire body to adjust the line of sight. Stridsvagn 103 tanks were produced to full scale from 1967 and lasted until 1971. In total, about 290 vehicles were produced and handed over to the Swedish army. In the 60s and 70s, Stridsvagn 103 was the core of the armored Swedish force. The car chain has small hooks to increase the grip of the road. The chassis has a blade that can be used to dig a camouflage tunnel for the vehicle. The Stridsvagn 103 tank can wade in about 20 minutes after the preparation time, the wading speed is about 6 km / h. In 1967, Norway compared this tank with the Leopard-1. When the lid is closed, the Stridsvagn 103 detects the target faster than the Leopard-1, the opposite result when opening the door. In 1975, two Stridsvagn 103 were shipped to the US for performance testing with the M60A1E3 version. The results showed that Stridsvagn 103 fired more accurately, but the average time per shot was 0.5 seconds slower. Stridsvagn 103’s superiority in accuracy was not enough to compensate for design flaws. This bizarre tank was quickly replaced by the Stridsvagn 122 (version of the Leopard-2) German made in Sweden in 1997.

Photo: MRB Le Trung Hieu, Deputy Head of the Hanoi Urban Railway Project Management Board, said that the TBM apparatus is designed specifically for the project of urban railway No.3, section Nhon – Hanoi station. The machine is manufactured by Herrenkecht (Germany), has a length of more than 90 meters, weighs about 850 tons, enough to accommodate machine equipment and operating workers. The peach shield with a prominent red and yellow flag pattern, has a diameter of 6.58m, weighs 65 tons, including main parts such as cutting heads, rake blades, tilling tools and bucket teeth, etc. with geology of Hanoi.
Currently, 2 tunneling machines have completed the test and commissioning. Auxiliary works such as installation of air compressor station, water supply station, mortar mixing station, ventilation will be completed in the end of April.
In order to officially put into operation, the Hanoi Urban Railway Management Board has cooperated closely with the consultant, contractors and related parties to ensure the quality of tunneling machines and related work. assessment before construction.
Firstly, the TBM duo must be confirmed from the concerned parties that they have met the performance requirements including: Completed and complete installation; Integration with support systems is appropriate; Qualified critical process parameters; The functions of components and control systems work normally and are in accordance with requirements.
Through the pre-acceptance test at the site (SAT), the TBM machine has been checked the operation, parameters and measurement of the main components, including the equipment: digging shield, control room, material chamber , Conveyor, conveyor, drilling equipment, main drive, tunnel mounting kit, hydraulic system, lubrication system, plumbing system, gas system, safety system, electrical system, systems support system.

Second, special attention is paid to monitoring before, during and after construction. The Contractor has analyzed the affected area when designing to conduct a “buidings condition survey” (BCS) survey for all houses in the affected area. From the condom results, the Contractor has risk assessment analysis (BRA-buildings risk assesstment report) for buildings during construction. Photo: MRB Based on the BRA report, the contractor designs and installs monitoring equipment for buildings and ground, including: Monitoring settlement, inclination, fissure (if any), groundwater level … This will be installed prior to construction and will be monitored during construction for abnormal warning (if any).
In case of abnormal monitoring, the contractor will analyze the cause, assess the level of danger … and based on that result to have a plan for the construction to continue or stop to handle the problem. subject. This is a strict, closed process to ensure the most safety for the above and adjacent buildings.
Compared with conventional tunneling methods, TBM drilling method is said to minimize the impact of traffic, occupy less area or affect surrounding constructions. Because soil can be collected and transported after excavation, this method causes less dust, vibration and noise compared to other tunneling methods. This construction method is environmentally friendly. TBM (Tunnel Boring Machine) works on the principle of soil pressure balance. Behind the digging shield is arranged a closed partition. The soil from the excavated shield will fall into the space and create a pressure balance between the excavated soil and the unearthed soil, making the digging mirror stable and not landslides. The soil pressure in the balance chamber is monitored by sensors placed directly in it. After a short 1.5m excavation, the tunnel cover (which is assembled reinforced concrete slabs) is immediately constructed. Where the drill goes, the cover of the tunnel is assembled there to avoid landslide of the soil and rock above. According to the design, in ideal conditions, each day the machine will dig about 10m tunnels.
When put into operation, the TBM duo will start drilling from S9 station to S12 station – Hanoi station at the end of Tran Hung Dao street with a total length of 4km.

Currently, 2 tunneling machines have completed the test and commissioning. Auxiliary works such as installation of air compressor station, water supply station, mortar mixing station, ventilation will be completed in the end of April.

In order to officially put into operation, the Hanoi Urban Railway Management Board has cooperated closely with the consultant, contractors and related parties to ensure the quality of tunneling machines and related work. assessment before construction.

It is known that, compared to conventional tunneling methods, TBM drilling method is said to minimize the impact of traffic, occupy less area or affect surrounding constructions. Because soil can be collected and transported after excavation, this method causes less dust, vibration and noise compared to other tunneling methods. This construction method is environmentally friendly.