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| Research on key technology of geological separation layer water prevention and control in Qingciyao Mine |
| Xue Yisheng |
| Xintai Coal Mine Construction Company, Jinneng Holding Coal Industry Group, Datong 037003, China |
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Abstract Due to the influence of mining in Qingciyao Mine, the phenomenon of water accumulation in separation layer would take place. The technology of preventing and controlling separation layer by surface drainage drilling hole was adopted. Namely, the surface drainage drilling hole was constructed in advance in the area where the separation layer water might be produced, and the water level of the working face was monitored in time to warn the phenomenon of underground water outflow. After the field application of No.1307 and 1302 faces, no significant separation layer water was produced. The results showed that this technology could play a certain prevention and control effect and ensure the safety of the working face.
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