厚松散含水层下工作面压架机理分析与防治对策  

Mechanism Analysis of Pressurizing of Hydraulic Support of Working Face Under Thick Unconsolidated Confined Aquifer and Prevention Measures

作　　者：刘千贺[1,2] 杨科[1,2] 闫书缘[1,2] 陆伟[1,2] 

机构地区：[1]安徽理工大学深部煤矿采动响应与灾害防控安徽省重点实验室,安徽淮南232001 [2]安徽理工大学煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001

出　　处：《煤矿安全》2015年第8期168-170,173,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51374011);教育部出国留学基金(第43批)资助项目;中国博士后基金资助项目(2012M521211)

摘　　要：针对松散承压含水层下提高回采上限开采引起的压架突水事故。基于岩层控制中的关键层理论,结合上覆岩层结构特征分析,采用理论分析、数值模拟计算对松散承压含水层下提高回采上限开采覆岩运移、矿山压力、支架-围岩关系进行了系统分析,获得了特定地质开采条件下覆岩破断、运移特征,揭示了压架机理,即高水压的载荷传递作用下单一关键层破断引起的覆岩整体复合破断是造成工作面压架的本质原因,提出了防止此类工作面开采压架技术对策。For pressurizing of hydraulic support and water inrush disaster occurring during extending the upper extraction limit mining under unconsolidated confined aquifer,based on the key strata theory in rock stratum control,combined with structural characteristics of the overburden analysis,theoretical analysis and numerical simulation calculation is used to analyze overburden migration,underground pressure and support with surrounding rock relationship systematically during extending the upper extraction limit mining under unconsolidated confined aquifer,then the overburden breaking and migration characteristics under specific geological mining conditions are obtained,which reveals the mechanism of pressurizing of hydraulic support that the single key stratum breaking causing overburden overall composite breaking with the effect of high water pressure is essentially cause of pressurizing hydraulic support,and brings forward the prevention technology measures for pressurizing of hydraulic support on similar faces.

关 键 词：厚松散含水层 压架 单一关键层 工作阻力 动力灾害 

分 类 号：TD745[矿业工程—矿井通风与安全]