不规则煤柱影响下旋采工作面冲击地压防治技术

唐口煤矿3303工作面初采期间存在多个不规则煤柱，对工作面的围岩应力状态和分布规律造成了不利影响，工作面存在冲击地压发生可能性。为了防止工作面初采期间冲击地压的发生，对工作面初采期间的应力状态进行了数值模拟研究，分析了倾斜推进、旋采和水平推进3个阶段的工作面围岩应力状态变化及其冲击危险性，划分了6个冲击地压危险区域。回采过程中对危险区域进行应力监测，若发现危险立即采取放炮卸压措施解除冲击地压危险。实践证明通过冲击地压危险区域的划分和危险性分析．继而采取相应防范措施可有效地防止工作面冲击地压的发生。

Mine Pressure Bumping Prevention and Control Technology of Revolving Mining Face Under Influences of Irregular Coal Pillar

There were several irregular coal pillars in No.3303 coal mining face during the initial mining period in Tangkou Mine.Those irregular coal pillar zones would cause unfavorable influences to the surrounding rock stress condition and distribution of the coal mining face.There was a possibility of the mine pressure bumping occurred in the coal mining face.In order to prevent the mine pressure bumping occurred during the initial mining period of the coal mining face,a numerical simulation study was conducted on the stress conditions during the initial mining period of the coal mining face and the surrounding rock stress conditions and mine pressure bumping danger of the coal mining face with three stages of the inclined pushing forward,revolving mining and horizontal pushing forward were analyzed.There were six mine pressure bumping dangerous zones divided.During the mining process,the stress monitoring and measuring was conducted on the dangerous zone.Once the danger found,a drilling blasting and pressure releasing measures would be applied to eliminate the mine pressure bumping danger.The practices showed that with the division of the mine pressure bumping dangerous zones and analysis on the danger,the related prevention measures provided could effectively prevent and control the mine pressure bumping occurred in the coal mining face.