China News Service, Yantai, January 23 (Yang Bing and Wang Jiaoni) The reporter learned from the emergency rescue headquarters of the Wushan gold mine explosion accident in Qixia, Shandong Province on the evening of the 23rd that the rescue has added No. 11 and No. 12 boreholes for auxiliary detection and roadway Drainage, the current life maintenance monitoring channel, life rescue channel, drainage guarantee channel and auxiliary detection channel are advancing steadily and orderly.

　　As of 12:00 on January 23, the No. 1 borehole continued to be monitored and no response was received.

The No. 4 borehole maintained unblocked communication and supplies, and talked with trapped personnel underground 5 times, and delivered food, clothing, daily necessities, etc. underground.

10 miners in the middle section of the 5th section were transferred to the normal diet stage, and their physical, psychological, and living conditions were good.

It is extremely difficult to clear the wellbore.

Photo courtesy of the Rescue Command

　　Underground miners continued to search for trapped persons through laser pointer projection and loudspeaker shouting. They have not yet received information from other missing persons.

　　Shaft clearance continues to use the "double-layer suspension plate + gas welding cutting + hydraulic cutting" operation method to optimize the operation process, shorten the auxiliary operation time, do everything possible to improve the efficiency of the operation, and strive to let the trapped miners rise to the shaft as soon as possible.

　　Previously, rescue experts believed that the biggest hope for underground miners to lift the shaft was to complete the clearance of the shaft.

According to the evaluation and calculation by many domestic authoritative experts, it is estimated that there will be a serious blockage with a thickness of about 100 meters from 350 meters to 446 meters from the wellhead. The obstacles are about 1,300 cubic meters and 70 tons in weight, making it extremely difficult to clear the obstacles.

According to expert evaluation and calculation, it is estimated that there will be a serious blockage with a thickness of about 100 meters at a distance of 350 meters to 446 meters from the wellhead. The obstacles are about 1,300 cubic meters and 70 tons in weight.

Photo courtesy of the Rescue Command

　　At the same time, drilling No. 10, one of the life rescue channels, was drilled in the afternoon of January 20, and the footage was 18 meters as of 6 am on the 22nd.

Chen Yumin, head of the on-site rescue team, said in an interview with the media that the national mine emergency rescue team responsible for drilling said that under such geological conditions, the drilling diameter is 711 mm (satisfying personnel lifting the well) and the depth is more than 500 meters. Having not completed such a task, the difficulties faced are unpredictable.

　　At present, there are 17 professional rescue teams and 1 fire rescue team, with a total of 633 rescuers and 407 sets of rescue equipment.

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