Xi'an Yanxiang Road collapsed suddenly. What dangers are there in this sudden situation?

On the far right side of the highway near the subway entrance, the highway collapsed, forming a large crater about 9 meters long and 5 meters wide. The depth of the pit has not yet been estimated. The road location is close to Exit B of Collapse Polytechnic Campus Station of Metro Line 5. Video from the administrative office showed a cordon set up at the scene, fire trucks and medical personnel on standby, and rescue workers and police responding to emergencies. The owner of a nearby business, surnamed Li, said he was in his shop when he heard a loud bang and then saw a large hole in the road.

At 6:50 pm on May 13, 2021, the Xi'an Metro Operations Bureau announced on its Weibo that due to the collapse of the Yanxiang Road municipal road, Exit B of Daqujiang Campus Station of Line 5 The passage is temporarily closed and has no impact on subway operations. After contacting the Xi Fire Brigade, the staff said that after verification, the landslide area was about 5 meters deep and covered an area of ??60 square meters. Rescuers rescued an injured woman who fell into a pit and took her to hospital. The cause of the accident is currently under investigation. Subsequently, the Administrative Committee of Qujiang New District in Xi'an was informed that the underground passage project of Yuejiazhai Station of Huazhu Zhongcheng Phase 3 commercial complex on Yanxiang Road in Xi'an and the road near the fifth line of the subway collapsed. A woman riding a non-motorized vehicle fell into a pit. After being rescued, she was taken to the hospital with no vital signs.

Video from the scene showed the extent and depth of the collapse, with a woman riding a bicycle falling into the hole. The area of ??the landslide is about 8 meters in diameter and about 5 meters deep. At about 19:20 that night, the woman fell into the pit and was rescued. She was then sent to the hospital for treatment. Regrettably, at about 21:00 that night, the woman was rescued. The death, as for the specific details, is still under further investigation and disposal. The road collapsed on Yanxiang Road in Xi'an from north to south, at the roadside exit outside the campus station of B Technical University, Metro Line 5. The street lamp also fell into the pit.

At 10:27 pm on May 13, 2021, a fire brigade issued a warning notice. The full text is as follows: Traffic 91.6 reporters learned that the woman was sent to the hospital and died unfortunately after the rescue failed. The cause of the accident is under investigation. A landslide occurred on Yanxiang Road in Xi'an City, causing the nearby subway entrance to be closed and the road to be controlled. Due to the collapse of Yanxiang Road Municipal Road, Exit B of Daqujiang Campus of Metro Line 5 was temporarily closed, but the subway operation was not affected. At 7:48 pm on May 13, 2021, Xi'an Traffic Police issued a reminder that temporary traffic control will be implemented in both directions on the section from Yanxiang Road 3rd Road to the intersection of Chongyang Road.