回采巷道底鼓控制机理分析  

Analysis on Mechanism of Floor Heave in Gateroads

作　　者：张永杰[1] 毕文广 张科学[2] 王襄禹[3] 杨英明[2] 马振乾[2] 

机构地区：[1]北京天地华泰采矿工程技术有限公司,北京100013 [2]中国矿业大学(北京)资源与安全工程学院,北京100083 [3]中国矿业大学矿业工程学院,江苏徐州221008

出　　处：《煤炭技术》2014年第10期92-95,共4页Coal Technology

基　　金：国家自然科学基金项目(51174195);全国博士学位论文作者专项资金资助项目(200760);煤炭资源与安全开采国家重点实验室自主研究课题资助(SKLCRSM08X04)

摘　　要：建立了回采巷道底鼓力学模型,借助于MathCAD软件得到了底板应力应变解析解。由于煤岩为脆性材料,且参与底鼓的底板浅部岩层多为单向或两向受力状况,因此以最大线应变强度理论为煤岩破坏准则,分别研究了水平应力占主导作用和垂直应力占主导作用时底板岩层失稳破坏规律。针对底板岩层变形破坏规律,提出了相应的底鼓控制准则。Gateroads mechanical model was established, afterwards the stress and strain solution were obtained by using MathCAD mathematical software. The maximum compressive and tensile strength criteria were applied to evaluate the failure condition of immediate floor due to their brittle characteristics. Then, the failure behavior of immediate floor was studied when horizontal stress is higher than vertical stress, vice versa. At last, the rational criteria for control of floor heave were proposed based on the study of the failure behavior of immediate floor.

关 键 词：回采巷道 底鼓 力学模型 MATHCAD 应变分析 

分 类 号：TD353[矿业工程—矿井建设]