华北型煤矿承压泵井安全评价技术研究——以峰峰矿区薛村煤矿为例  

TECHNOLOGICAL RESEARCH ON SAFETY EVALUATION OF PUMPING WELL APPROACHING TO HIGH CONFINED AQUIFER IN NORTH CHINA— A CASE STUDY OF XUECUN COALMINE IN FENGFENG MINING AREA

作　　者：王经明[1] 刘德明[1] 

机构地区：[1]华北科技学院安全工程系,北京065201

出　　处：《岩石力学与工程学报》2009年第5期908-913,共6页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(40772152);国家科技支撑计划课题(2007BAK29B04);华北科技学院大学生创新计划细目

摘　　要：以峰峰矿区薛村煤矿为例,在水文地质条件分析的基础上,采用压力隧道法、关键层理论法、渗透系数-应变关系法和数值模拟法对潜水泵井的安全性进行评价,各种方法得出同样的结论,即地应力对泵井底板的破坏深度或由于应变造成底板隔水层渗透系数变化带远没有达到奥陶系灰岩含水层,泵井在开凿过程中是安全的。研究结果认为,有关规程定义的突水系数对于泵井的水文地质条件评价不适用,井底对于奥陶系含水层的突水系数虽然超出有关规程定义的值,但不会造成突水。所给出的评价方法对华北型煤矿高承压泵井的水文地质条件评价具有很好的借鉴作用。Lack of suitable norms or codes to observe made it difficult for scholars to evaluate hydrogeological conditions for safe advance of the pumping well approaching to high confined aquifer in Xuecun coal mine, Fengfeng mining area, the heavy water mining area. To solve the problem, the authors take advantage of pressure-tunnel model, key stratum theory, the relationship of permeability vs. strain and numerical simulation methods to evaluate the safety of pumping well approaching to the strong Ordovician limestone aquifers based on hydrogeological condition analyses. The same conclusions from all the above methods were drawn that the failure area is far away from the strong aquifer and the advancing engineering is safe. The authors considered that water inrush coefficients of floor strata given by the regulations were not suitable for pumping well in hydrogeological evaluation. Water inrush would not take place during the well advancing even though the inrush coefficient excesses the limit given by the regulations. The methodology given in the paper explored a way for pumping well safety evaluation in hydrogeology for North China typed coal mines.

关 键 词：采矿工程 泵井 突水系数 关键层 模拟 峰峰矿区 

分 类 号：TD26[矿业工程—矿井建设]