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阳泉二矿成功地进行了一次探放6000米~3水的工作。该矿东四尺井开采二个煤层,先采11°煤层,然后再开采下部相距22米的12°煤层。采12°煤层时必须事先把11°煤层已采区的积水放掉。文化大革命以前探放水都是安装独套管,打透水后,几个大气压的水喷下来,水四处飞溅,打的人睁不开眼睛,拆钻杆工作又困难又危险。同时在拆钻
Yangquan No. 2 mine successfully conducted a 6,000 ~ 3 water exploration work. The four-foot well of the mine mines two coal seams, takes 11 ° of coal seams first and then 12 ° of coal seams 22 meters away from the lower part. Mining 12 ° seam must be 11 ° coal seam mining area has been let go of stagnant water. Before the Cultural Revolution, all the water for exploration and drainage was fitted with single sleeves. After penetrating the water, a few atmospheres of water were sprayed and the water splashed around. The people who opened the pipe were unable to open their eyes and the work of removing the drill pipe was difficult and dangerous. At the same time in the demolition drill