| 济南苏家庄铁矿矿区地面塌陷成因分析 |
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| 引用本文： | 王庆兵,高宗军,段秀铭,吴丽莉.济南苏家庄铁矿矿区地面塌陷成因分析[J].中国岩溶,2010,29(2):191-195. |
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| 作者姓名： | 王庆兵 高宗军 段秀铭 吴丽莉 |
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| 作者单位： | 1.山东科技大学地质学院；山东省地质环境监测总站 |
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| 摘 要： | 在对济南苏家庄铁矿矿区地质环境条件、矿山开采现状调查基础上，基于地面塌陷 特征及成因分析，从矿山地球物理特征、井巷工程、地下水水位、矿体及围岩工程地质性质 等因素出发，论证了矿区塌陷的成因。调查研究表明，在200 m的瞬变电磁法探测深度范围 内视电阻率等值线水平变化相对平缓，采空区未见明显的采空区分布异常；采空区总体积仅约9 218 m3，远小于矿坑塌陷坑总体积58 665.8 m3；竖井与塌陷坑、塌陷坑与采空区水位高差巨大且稳定，达到了58.93～64.11 m；矿井巷道闪长岩、灰岩及大理岩围岩整体性好，力学强度高，因此由采空塌陷造成的地面塌陷可能性很小。在此基础上，结合矿区地形地貌、地层结构、松散盖层、动力条件及矿坑排水等因素综合分析，认为该矿区的地面塌陷是由矿山开采过程中长期排水所引起。
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| 关 键 词： | 矿坑排水 土洞 塌陷 济南苏家庄铁矿 |
| 收稿时间： | 2009/11/7 0:00:00 |
Origin of ground collapse at the Sujiazhuang iron mine in Jinan City |
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| WANG Qing-bing,GAO Zong-jun,DUAN xiu-ming and WU Li-li.Origin of ground collapse at the Sujiazhuang iron mine in Jinan City[J].Carsologica Sinica,2010,29(2):191-195. |
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| Authors: | WANG Qing-bing GAO Zong-jun DUAN xiu-ming and WU Li-li |
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| Institution: | 1.Shandong University of Science and Technology；Geoenvironment Monitoring Station of Shandong Province2.Shandong University of Science and Technology3.Geoenvironment Monitoring Station of Shandong Province |
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| Abstract: | Based on the survey to geologic conditions and exploitation situations at the Sujiazhuang iron mine,the features and origin of ground collapse is expounded by means of the analysis on geophysical features,sinking and driving engineering,groundwater table and engineering geologic features of the ore body and surrounding rocks.The results show that the horizontal change of apparent resistivity isoline is relatively gentle within the 200 m probe scope with transient electromagnetic method and that there is no obviously abnormal distribution of goaf;the total volume of goaf is only about 9 218 m3 that is much smaller than the total volume,58 665.8m3,of the collapse pit;the water head between the shaft and collapse pit and that between the collapse pit and goaf are very high and stable,up to 58.93～64.11 m;the integrity and intensity of the surrounding diorite and limestone as well as marble are quite well,so the probability of ground collapse led by goaf collapse is very small.According to the above situation and the comprehensive analysis on the landform,stratum structure,overlying cap,dynamic conditions and mine drainage as well as other factors,it is believed that the ground collapse is caused by long term pumping during exploitation. |
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| Keywords: | mine drainage earth cave ground collapse Sujiazhuang iron mine in Jinan |
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