霄云井田奥陶系灰岩岩溶发育规律研究  

Research on development law of Ordovician limestone karst in Xiaoyun Coalfield

作　　者：于小鸽[1] 吕华东 张德明 吕昌兴 曲林燕 YU Xiaoge;LYU Huadong;ZHANG Deming;LYU Changxing;QU Linyan(Department of Resource and Civil Engineering,Shandong University of Science and Technology,Taian 271000,China;College of Earth Sciences and Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Shandong Provincial No.4 Institute of Geological and Mineral Survey,Weifang 261021,China;Huafeng Coal Mine,Xinwen Mining Group Co.,Ltd.,Taian 271000,China;Jinan Energy Engineering Group Co.,Ltd.,Jinan 250300,China)

机构地区：[1]山东科技大学资源与土木工程学院,山东泰安271000 [2]山东科技大学地球科学与工程学院,山东青岛266590 [3]山东省地质矿产勘查开发局第四地质大队,山东淮坊261021 [4]新汶矿业集团有限责任公司华丰煤矿,山东泰安271000 [5]济南能源工程集团有限公司,山东济南250300

出　　处：《煤矿安全》2022年第12期22-27,共6页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(42002282)。

摘　　要：为分析霄云井田奥陶系灰岩的三维展布规律,借助统计分析、物理化学试验等方法揭示奥陶系灰岩岩溶发育规律;依据分形理论、X衍射实验及玻片鉴定试验分析研究区断裂构造复杂程度、岩石矿物成分及裂隙发育程度;借助水质分析手段,通过计算研究区水样的水饱和指数(L.S.I.)、水稳定指数(R.S.I.)及沉淀指数(P.S.I.)分析岩溶水体稳定性;结合构造复杂程度分区图,矿物成分及水质分析试验结果总结岩溶发育规律。研究表明:横向上,受断层影响,研究区中西部奥陶系灰岩岩溶发育程度较高,纵向上,研究区岩溶发育的最有利位置位于距奥灰顶界面40~80 m段,但因研究区奥灰水饱和度较高,岩溶裂隙继续发生溶蚀的可能性较小。In order to analyze the three-dimensional distribution law of Ordovician limestone in Xiaoyun Coalfield,based on the evolutionary regularity of tectonic stress in the study area,we reveal the development mechanism of Ordovician limestone karst with the help of statistical analysis and physical chemistry experience.First,according to the fractal theory,X-ray diffraction experiment and Glass slide qualification test,we analyze the complexity of fault structure,mineral component of rocks and development degree of fissures.Second,by means of water quality analysis,we calculate the Laagelier saturation index(L.S.I.),Ryzner stability index(R.S.I.),and precipitation index(P.S.I.) of water samples in the study area,and analyze the stability of karst aquifer.Finally,we conclude the development law of karst with the help of zone map of tectonic complexity,mineral component and results of water analysis experience.According to the study,influenced by faults,the development level in the central and western of the study area is higher horizontally,and the most appropriate location for karst development in the study area is 40-80 m away from the top interface of Ordovician limestone vertically.However,it is less likely that the karst fissure will continue to develop due to the higher saturation of Ordovician limestone water in study area.

关 键 词：矿井突水 岩溶发育规律 分形分维 X衍射试验 水质分析 

分 类 号：P641[天文地球—地质矿产勘探]