China News Service, Yantai, January 13 (Yang Bing and Wang Jiaoni) On the evening of the 13th, the reporter learned from the third press conference of the rescue headquarters at the site of the Wushan gold mine explosion accident in Qixia, Shandong. As of 17:00 on the 13th, return to the air shaft. Obstacles in the wellbore were cleared to 310 meters above the ground, and the accident rescue headquarters deployed a total of 4 drill holes for rescue.
It is reported that the obstacles in the return air shaft have been cleared to 310 meters above the ground.
While the obstacles in the wellbore are cleaned up manually by the hoisting cage, air is also delivered to the wellbore through the lowered air cylinder, and forced ventilation is adopted to transport air down the well to remove harmful gases and smoke.
At present, the carbon monoxide, oxygen concentration and temperature indicators in the wellbore are all normal.
As of 17:00 on the 13th, the obstacles in the return air shaft were cleared to 310 meters from the ground.
Photo by Wang Jiaoni
At the same time, the accident rescue headquarters arranged a total of 4 drill holes for rescue.
Drilling No. 1, with a diameter of 310 mm, has a cumulative footage of 241 meters; Drilling No. 2, with a diameter of 219 mm, has a cumulative footage of 420 meters; Drilling No. 3, with a diameter of 219 mm, has a cumulative footage of 282 meters; Drilling No. 4 ( Large aperture), 710 mm in diameter, drilling rig is being installed.
Li Bo, the deputy mayor of Yantai City, said that in the next step, the headquarters will further refine the rescue plan and insist on two legs in parallel, that is, on the one hand, speed up the clearing of obstacles in the return air shaft, and on the other hand, speed up ground drilling to open up the other. Channel of life.
Xiu Guolin, head of the technical expert group of the on-site rescue command and safety director of Shandong Gold Group Co., Ltd., said in a press conference that the biggest difficulty facing on-site rescue is that it is very difficult to clear obstacles in the wellbore due to the impact of the explosion. The feng shui drainage pipelines, power supply and communication cables, and the facilities between the ladders in the wellbore were all seriously damaged. The above-mentioned wellbore equipment and facilities fell off and got stuck in the wellbore. It was extremely difficult and severely restricted the rescue progress.
At present, the accident rescue headquarters has arranged 4 drill holes for rescue.
Photo by Wang Jiaoni
At 14:00 on January 10, an explosion occurred in the Hushan Gold Mine of Shandong Wucailong Investment Co., Ltd., Qixia City, Yantai City, Shandong Province, causing 22 underground workers to be trapped and lost contact.
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