China News Service, Changsha, May 3 (Fu Jingyi) As of 19:00 on May 3, 9 trapped people have been successfully searched and rescued in the collapse of Changsha residents' self-built houses, and 2 victims were found at the scene.

In the next step of rescue work, the search and rescue plan will be adjusted in time according to the rescue situation on the spot. While preventing secondary disasters, the structures of the collapsed buildings will be peeled off layer by layer, and vital signs will be detected simultaneously, so as to achieve "peel one layer and detect once".

  The fourth press conference on the collapse of Changsha residents' self-built houses was held on the 3rd to report the latest situation.

Zheng Jianxin, the mayor of Changsha and the commander of the Emergency Rescue and Rehabilitation Command for the collapse of self-built houses by residents on April 29, said that although the 72-hour golden rescue time has passed, as long as there is a glimmer of hope, he will never give up.

  How did the rescuers detect signs of life during the rescue of this accident?

Liang Buge, a professor at Central South University who has long been engaged in the field of ultra-wideband radar life detection, said that in this accident rescue, firefighters used traditional methods such as shouting and knocking, search and rescue dogs, as well as radar life detectors, audio and video life detection devices already equipped by fire fighting units. The detection of signs of life is carried out by comprehensive means such as instruments and drones.

  Liang Buge transferred the landmark achievements of the Central South University team in undertaking the national "13th Five-Year" key R&D plan projects: MlMO radar life detector, multi-mode radar life detector, snake eye audio and video life detector and other latest equipment to the site throughout the whole process Provided technical support, and invited national rescue experts and vice-captain of the Chinese rescue team, Han Wendong, to provide on-site professional guidance. "During this rescue process, the field equipment technology in the life detection link represents the current domestic advanced level."

  Since the evening of May 2, two full-field silent detections were carried out at the scene. The first was at 10:30 p.m. and lasted for 40 minutes, and the second was at 4:30 a.m. on May 3, which lasted for 2 hours.

Liang Buge said that it is sad that the technicians and fire rescue personnel also encountered two victims when searching for survivors. After the medical rescue personnel on the scene confirmed that they had no signs of life.

Rescuers tried to remove it from the scene, but found it was pinned down and unable to move.

  How are the rescued people doing?

Ouyang Wen, vice president of the Third Xiangya Hospital of Central South University and an expert in the medical treatment team, said that as of 12:00 on the 3rd, 9 people had been admitted to the hospital. The injury is not out of the dangerous period for the time being, and the overall condition of the rest of the injured is temporarily stable.

At the same time, the provincial and municipal health departments have established a team of psychological counseling experts to provide timely psychological intervention and support for the wounded and their families.

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