原位应力测试在底板突水预测中的应用

APPLICATION OF INSITU STRESS MEASUREMENT TO FORECAST OF WATER INRUSH FROM FLOOR

利用采动条件下煤层底板原位应力测试所获得的数据，通过有限元数值模拟来建立采煤工作面的应力场、位移场与渗流场，并确定底板突水判据．此项技术在淮北矿务局杨庄矿Ⅱ６１１０工作面得到应用，由于正确地评价了该工作面的突水可能性，安全采出煤炭４２万ｔ．

Based on data from insitu stress measurement of the floor under the mining condition, stress, strain and water flow fields are established by finite element numerical simulation, and criteria of water inrush from floor are determined. The technique was applied to NoⅡ 6110 working face in Yangzhuang Mine, Huaibei Mine Administration. Due to correct evaluation of the possibility of water inrush from this face, 420 000 tons of coal was safely produced.