顶板淋水巷道围岩破坏与控制技术研究  

Study on Surrounding Rock Failure and Control Technology of Roof Water Drenching Roadway

作　　者：卢恒 秦宾宾 王保强 LU Heng;QIN Bin-bin;WANG Bao-qiang(School of Energy and Mining Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)

机构地区：[1]中国矿业大学(北京)能源与矿业学院,北京100083

出　　处：《煤炭技术》2021年第2期25-29,共5页Coal Technology

摘　　要：基于某矿2209回风平巷淋水围岩支护难题,综合运用理论计算、数值模拟和现场试验等方法对淋水巷道围岩应力分布及破坏特点进行分析。结果表明:含水煤岩体受水影响物理力学性质减弱,淋水巷道围岩塑性区范围变大,变形量增加。针对2209回风平巷淋水围岩支护难题,提出采用锚网索联合支护配合使用防水锚固剂及马丽散注浆、布置泄水孔等方式进行围岩控制,并用于现场试验,取得较好的控制效果。Based on the surrounding rock support problem of 2209 return air roadway in a mine, the stress distribution and failure characteristics of surrounding rock of water spraying roadway are analyzed by using theoretical calculation, numerical simulation and field test. The results show that the physical and mechanical properties of water bearing coal and rock mass are weakened, the plastic zone of surrounding rock of water spraying roadway is enlarged, and the deformation is increased. In view of the difficulties of surrounding rock support in 2209 return air drift, proposes to adopt the combined support of anchor mesh and cable, waterproof anchoring agent and Malisan grouting, layout of drainage holes and other ways to control the surrounding rock. The method has been used in the field test and achieved goodcontrol effect.

关 键 词：淋水巷道 塑性区 数值模拟 理论计算 

分 类 号：TD327[矿业工程—矿井建设]