潞安矿区奥陶系岩溶演化主控因素分析
|
摘要
通过野外调查、室内实验与钻探资料对比分析对潞安矿区奥陶系岩溶演化主控因子特征进行研究.结果表明:1)加里东-海西期老岩溶形成在奥陶系顶部的峰峰组内;新构造运动期新岩溶只发育在裸露区-浅埋区和新断裂带上,形成多层水平岩溶洞穴.2)中奥陶统存在3个韵律结构使浅部新岩溶发育产生强弱相间的层控现象;石膏层的膏溶作用产生了膏溶角砾岩带、压碎岩带和裂隙带,是泥灰岩段成为裂隙岩溶含水段的主因.3)浅部走向强径流带与贯穿深浅部的逆倾向弱径流带的共同作用,使CaCO3,MgCO3溶蚀区域很局限,新岩溶只在浅部与老岩溶叠加;中深部老岩溶和陷落柱处于沉淀充填状态.4)新构造断裂带是矿区西部岩溶地下水获得浅层地下水越流补给的通道,也是弱富水区中强富水带.
The main controlling factor of Ordovician Karst development were studied based on field investigation,in-door experiment,and drilling data.The results show that: 1) The Caledonian-Hercynian karsts were developed within the Fengfeng formation of the Ordovician roof while new karsts were formed only in the bedrock exposed area,shallowly buried area,and newly formed fault zone during neotectonic movement,forming some multi-layer horizontal karsts;2) There are three sedimentary rhythmic structures in the middle the Ordovician,making the newly formed karsts in shallow zones have a strata bound phenomenon,forming 3 zones of gypsum breccia zone,cataclastic rock zone,and fracture zone because of the gypsum swelling and solution of gypsum,which is the major casue for the marlite layer to become the fractured karst aquifer;3) The joint action of shallow-along-strike strong runoff zone and the deep-reversed-inclination weak runoff zone makes the CaCO3 and MgCO3 corrosion area quite limited and so the superposition of the newly developed karst zone with the old one can be seen only in shallow area,making the deep old karst or collapse column be filled up;and 4) The neotectonic fault zone is the leaking recharge channel through which the ground karst water in the west mining area is recharged.
The main controlling factor of Ordovician Karst development were studied based on field investigation,in-door experiment,and drilling data.The results show that: 1) The Caledonian-Hercynian karsts were developed within the Fengfeng formation of the Ordovician roof while new karsts were formed only in the bedrock exposed area,shallowly buried area,and newly formed fault zone during neotectonic movement,forming some multi-layer horizontal karsts;2) There are three sedimentary rhythmic structures in the middle the Ordovician,making the newly formed karsts in shallow zones have a strata bound phenomenon,forming 3 zones of gypsum breccia zone,cataclastic rock zone,and fracture zone because of the gypsum swelling and solution of gypsum,which is the major casue for the marlite layer to become the fractured karst aquifer;3) The joint action of shallow-along-strike strong runoff zone and the deep-reversed-inclination weak runoff zone makes the CaCO3 and MgCO3 corrosion area quite limited and so the superposition of the newly developed karst zone with the old one can be seen only in shallow area,making the deep old karst or collapse column be filled up;and 4) The neotectonic fault zone is the leaking recharge channel through which the ground karst water in the west mining area is recharged.
引文
[1]白海波,缪协兴,冯梅梅.潞安矿区新构造及其近代水作用研究[J].采矿与安全工程学报,2006,23(3):270-276.BAI Hai-bo,MIAO Xie-xing,FENG Mei-mei.Studyon the neotectonics and water controlling effect inLu’an coal mine[J].Journal of Mining&Safety En-gineering,2006,23(3):270-276.
[2]白海波.张双楼矿井地下水系统研究[D].徐州:中国矿业大学资源与地球科学学院,1993.
[3]葛亮涛,高洪列,叶贵钧.中国煤田水文地质学[M].北京:煤炭工业出版社,1999.
[4]曹代勇,张杰林,吴国强,等.潞安矿区构造格局与演化[J].煤炭学报,1995,20(2):174-179.CAO Dai-yong,ZHANG Jie-lin,WU Guo-qiang,etal.Tectonic frame evalution in Lu’an mine area[J].Journal of China Coal Society,1995,20(2):174-179.
[5]李祥根.中国新构造运动概论[M].北京:地震出版社,2003.
[6]王家兵.潞安矿区奥陶系岩溶水化学成分的成因[J].煤田地质与勘探,1999,27(2):39-42.WANG Jia-bing.The chemical action of karst watercompositions of the ordovician in Lu’an mine area[J].Coal Geology&Exploration,1999,27(2):39-42.
[7]刘芳珍.潞安矿区奥陶系岩溶发育规律及成因探讨[J].地下水,1998,20(2):70-73.LIU Fang-zhen.Preliminary exploration on karst de-veloping cuase[J].Groundwater,1998,20(2):70-73.
[2]白海波.张双楼矿井地下水系统研究[D].徐州:中国矿业大学资源与地球科学学院,1993.
[3]葛亮涛,高洪列,叶贵钧.中国煤田水文地质学[M].北京:煤炭工业出版社,1999.
[4]曹代勇,张杰林,吴国强,等.潞安矿区构造格局与演化[J].煤炭学报,1995,20(2):174-179.CAO Dai-yong,ZHANG Jie-lin,WU Guo-qiang,etal.Tectonic frame evalution in Lu’an mine area[J].Journal of China Coal Society,1995,20(2):174-179.
[5]李祥根.中国新构造运动概论[M].北京:地震出版社,2003.
[6]王家兵.潞安矿区奥陶系岩溶水化学成分的成因[J].煤田地质与勘探,1999,27(2):39-42.WANG Jia-bing.The chemical action of karst watercompositions of the ordovician in Lu’an mine area[J].Coal Geology&Exploration,1999,27(2):39-42.
[7]刘芳珍.潞安矿区奥陶系岩溶发育规律及成因探讨[J].地下水,1998,20(2):70-73.LIU Fang-zhen.Preliminary exploration on karst de-veloping cuase[J].Groundwater,1998,20(2):70-73.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心