资源描述：
《团柏煤矿下组煤开采底板突水防治技术与对策.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、第39卷第6期煤炭科学技术Vol39No62011年6月CoalScienceandTechnologyJune2011地质与测量团柏煤矿下组煤开采底板突水防治技术与对策1231臧思茂,崔芳鹏,王书强,苏俊辉(1.霍州煤电集团有限责任公司团柏煤矿,山西霍州031400;2.中国矿业大学(北京)地球科学与测绘工程学院,北京100083;3.河北工程大学信息与电气工程学院,河北邯郸056038)摘要:针对团柏煤矿下组煤开采时水文地质条件的复杂性,运用突水系数理论计算和采用底板破2D坏过程有限元RFPA数值模拟分析方法,对该矿下组11号煤层开采时的4底板突水危险性做出
2、了综合评价。研究表明:陷落柱较为发育的11号煤底板突水系数005MPa/m,接近底板受构造破坏块段临界突水系数;由数值模拟结果看,该煤层开采时底板岩层的破坏深度约15m,破坏带底部距下伏奥灰含水层仅约10m。基于上述水文地质综合分析结论提出了该煤层开采时底板突水隐患的预防和治理对策。关键词:底板破坏;突水防治;数值模拟;突水系数;水文地质中图分类号:TD7452文献标志码:A文章编号:0253-2336(2011)06-0093-04PreventionandControlTechnologyandCountermeasuresofFloorWaterInrushfro
3、mMininginLowerGroupSeamofTuanbaiMine1231ZANGSimao,CUIFangpeng,WANGShuqiang,SUJunhui(1.TuanbaiMine,HuozhouCoalandElectricPowerGroup,Huozhou031400,China;2.SchoolofGeosciencesandSurveyingEngineering,ChinaUniversityofMiningandTechnology,Beijing100083,China;3.SchoolofInformationandElectricEngin
4、eering,HebeiUniversityofEngineering,Handan056038,China)Abstract:AccordingtothecomplexityofthehydrologicalconditionsofthelowergroupseammininginTuanbaiMine,thewaterinrush2DtheoreticalcalculationandthefiniteelementRFPAFEMnumericalsimulationanalysismethodofthefloorfailureprocesswasappliedtothecompr
5、ehensiveevaluationonthefloorwaterinrushdangeroccurredduringtheminingintheNo11seamofthelowergroupinthemine.ThestudyresultsshowedthatthesinkholewelldevelopedNo11seamwouldhaveafloorwaterinrushcoefficientof005MPa/mwhichwasclosedtothecriticalwaterinrushcoefficientofthefloorstructurefailureblocksec
6、tion.Thenumericalsimulationresultsshowedthatduringtheseamminingperiod,thefailuredepthinthefloorstratawasabout15mandthedistancebetweenthefailurezonebottomtotheroofoftheunderlyingOrdovicianlimestoneaquiferwasabout10m.Basedontheabovehydrologicalcomprehensiveanalysisconclusion,thepreventionandcontr
7、olcountermeasuresofthefloorwaterinrushhiddendangersoccurredduringtheseamminingwereprovided.Keywords:floorfailure;waterinrushprevention;numericalsimulation;waterinrushcoefficient;hydrology团柏煤矿是霍州煤电集团的主力生产矿井之93%。矿井采用斜井开拓,分2
