组合隔水层非线性失稳特征研究  

Nonlinear unstable characteristic of composed water-resisting strata

作　　者：黄存捍[1] 何毓俊 陈魁奎[1] 

机构地区：[1]河南理工大学资源环境学院,河南焦作454000 [2]鹤壁中泰矿业有限公司,河南鹤壁458010

出　　处：《河南理工大学学报（自然科学版）》2014年第5期595-597,603,共4页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家自然科学青年基金资助项目(51104058;41204035);河南理工大学博士基金资助项目(B2011-19)

摘　　要：在矿山压力和含水层水压的综合影响下,煤层底板隔水层将面临非线性失稳的危险.应用尖点突变理论研究组合隔水层失稳的非线性特征.将组合隔水层视为组合岩梁,建立其失稳的突变模型,探讨组合隔水层失稳的非线性规律,获得了组合隔水层失稳的充要条件.分析了矿山压力、水压和巷道跨度对组合隔水层失稳的影响规律,结果表明,随着矿山压力、水压和巷道跨度的增大,组合隔水层越容易失稳.研究结果对于底板突水的防治具有一定的指导意义.The water-resisting strata in coal seam floor will face the risk of the nonlinear instability affected by ground pressure and water pressure. The nonlinear characteristic of unstable composed water-resisting strata is studied with cusp catastrophe theory. The composed water-resisting strata can be regarded as a composed rock beam. The cusp catastrophe model of the unstable composed rock beam is established. Through the model, the nonlinear characteristic of unstable composed water-resisting strata is discussed, also the necessary and suffi- cient conditions are obtained. Lastly, the effect laws of ground pressure, water pressure and tunnel span on the instability of composed water-resisting strata are analyzed. The results show that with the growing of ground pressure, water pressure and tunnel span, the instability of composed water-resisting strata will be easier. It has a certain guiding significance for the prevention of floor water invasion.

关 键 词：底板突水 组合隔水层 尖点突变 非线性特征 

分 类 号：TD325[矿业工程—矿井建设]