摘要
针对乌东煤矿南采区急倾斜煤层特殊赋存形式和开采方式,建立了诱发冲击地压的"悬臂梁"模型,得出岩墙内部能量值与岩墙有效弯曲长度三次方成正比,并对此采用相应的空间综合治理措施。即对岩墙上部+500^+736m范围进行地面深孔爆破预裂,改变岩体储能条件;而在岩墙底部+475^+515m水平实施注水和深孔爆破措施,降低岩墙底脚部位煤岩层冲击倾向性。通过ARAMIS M/E微震监测系统进行效果检验,结果表明上述措施明显改善了岩墙内部储能方式,降低了冲击风险。
A cantilever beam model which induces the rockburst is established aiming at the especial mode of occurrence of the steep seam and mining way.Then a corresponding comprehensive control measure is proposed by the result of the model that the energy inside the middle rockwall is proportional to the cube of effective bending length.The energy-saving condition can be changed by the deep hole blasting on the ground at the range of＋500～＋736malong the rockwall.besides,the rockburst tendency will reduce by the measures which is composed of water pouring and deep hole blasting at range of＋475～＋515m.At last,it indicates that this series of measures reduce the risk of rockburst obviously with the technology of ARAMIS M/E.
作者
杨军
乔林珂
周开放
程小远
鲍甜甜
YANG Jun QIAO Linke ZHOU Kaifang CHENG Xiaoyuan BAO Tiantian(State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology （Beijing）, Beijing 100083, China School of Mechanics and Civil Engineering, China University of Mining and Technology （Beijing）, Beiiing 100083, China)
出处
《中国矿业》
北大核心
2017年第2期112-116,121,共6页
China Mining Magazine
基金
国家自然科学基金项目资助(编号:51674265)
教育部高等学校博士学科点专项科研基金项目资助
关键词
冲击地压
急倾斜煤层
悬臂梁
应力集中
深孔爆破
注水
rockburst
steep seam
cantilever beam
stress concentration
deep hole blasting
water pouring
