摘要
以三河尖煤矿南二采区9煤辅运上山掘进巷道为例,掘进前采用震动波CT技术反演分析了区域波速分布,得出了高应力及高应力梯度对应的冲击危险区域,通过掘进期间矿压显现验证了预测的准确性。采取针对性卸压治理措施后,进一步采用震动波CT反演技术对卸压区域波速分布进行了反演,结果表明,经卸压治理,该区域波速降低,高应力及高应力梯度区得到消除,区域冲击危险得到有效控制,保证了该巷道的安全掘进。
Taking rock burst prediction during the driving of No. 9 coal seam auxiliary transport rise in south No. 2 mining block of Sanheijian Mine as example,the high stress and high stress gradient area corresponding to the impact of the risk was obtained by seismic computed tomography technology to analyze of wave velocity distribution before driving. Driving process verified the accuracy of prediction and specific risk relief measures was adopted to ensure the safety of the roadway driving. Seismic computed tomography technology was used to inverse velocity distribution in relief region again after driving. The results show that, wave velocity in the region is reduced, the high stress and high stress gradient are eliminated in the area,which means effective control of rock burst risk and insurance of driving safety.
出处
《煤炭工程》
北大核心
2016年第10期67-69,共3页
Coal Engineering
基金
国家自然科学基金资助项目(51404243
51404269)
中央高校基本科研业务费专项资金资助项目(2014XT01)
