应用钻屑法评价采掘工作面冲击地压危险性

为了做好小沟煤矿冲击地压防治工作，在该矿1190B8综采面运输巷、回风巷掘进过程中以及回采工作面开采过程中，应用钻屑法对该综采面运输巷掘进面、回风巷掘进面、回风巷地质构造变化带、回风巷煤柱应力集中区、回采工作面、运输巷支承压力区6个应力集中区进行了检测，使用钻屑量判定指标判定6个应力集中区冲击地压危险性，确定小沟煤矿1190B8综采面掘进工作面、回采工作面无冲击地压危险。根据1190B8综采面采掘工作面钻屑量测试结果，确定并分析该综采面6个应力集中区的应力集中度。

Evaluating danger of rock burst in driving face by using drill cuttings method

In order to do a good job in the prevention and control of rock burst in Xiaogou Coal Mine，in 1190B8 fully-mechanized mining face transportation roadway，return air roadway excavation process and mining process，drilling cutting method was used to test six stress concentrations area including the driving face of transport roadway，driving face of return airway，geological structure change zone of return airway，coal pillar stress concentration area of return airway，coal winning face and supporting pressure area of transport roadway.The drilling powder index was used to determine the risk of rockburst in the six stress concentration areas，and there was no risk of rockburst in the 1190B8 fully-mechanized face of Xiaogou Coal Mine.According to the test results of the amount of drill cuttings in the mining face of 1190B8 fully-mechanized mining face，the stress concentration degree of the six stress concentration areas in this fully-mechanized mining face was determined and analyzed.