| 西山煤田古交矿区陷落柱特征及其导水性分析 |
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| 引用本文： | 李俊杰,郭英海,车灿辉,刘丽.西山煤田古交矿区陷落柱特征及其导水性分析[J].中国煤炭地质,2010(4):40-44. |
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| 作者姓名： | 李俊杰 郭英海 车灿辉 刘丽 |
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| 作者单位： | 中国矿业大学资源学院,江苏徐州221008 |
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| 摘 要： | 在分析区域地质特征的基础上,对西山煤田古交矿区陷落柱的数量、形态特征及分布规律进行了总结。从陷落柱的发育特征出发,对其导水条件进行了研究,认为本区岩溶陷落柱是否突水,关键取决于其是否有导水的力学薄弱通道。研究表明,本区岩溶陷落柱柱体胶结致密,后期活化程度弱,距煤层较近的峰峰组含水层的富水性弱,而煤层与上马家沟组强含水层之间隔水层厚度大,因而,在正常块段开采中,岩溶陷落柱作为集中导水通道导致重大突水的可能性较小。
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| 关 键 词： | 岩溶陷落柱 水文地质条件 导水性 薄弱通道 |
Subsided Column Features and Water Conductivity Analysis in Gujiao Mine Area, Xishan Coalfield |
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| Li Junjie,Guo Yinghai,Che Canhui and Liu Li.Subsided Column Features and Water Conductivity Analysis in Gujiao Mine Area, Xishan Coalfield[J].Coal Geology of China,2010(4):40-44. |
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| Authors: | Li Junjie Guo Yinghai Che Canhui and Liu Li |
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| Institution: | (School of Resources and Earth Science,China University of Mining ＆ Technology,Xuzhou,Jiangsu 221008) |
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| Abstract: | Based on regional geological characteristic analysis,summed up subsided column number,morphological characters and distribution pattern in the Gujiao mine area,Xishan coalfield.Starting from development features of subsided column,analyzed water conducting conditions,reckoned that if the subsided column will cause water bursting in the area is decided by whether there is mechanically weak water conducting channel.The study has demonstrated that the column cylinders in the area are compactly cemented and weakly succeeding activated,aquifers in the Fengfeng Formation near coal seams have weak water yield property,while the interval between coal seams and upper Majiagou Formation strong aquifer is quite thick,thus,during normal block cut mining,the possibility of the karstic subsided column as mass water conducting channel causing major water bursting is on the small side. |
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| Keywords: | karstic subsided column hydrogeological condition water conductivity mechanically weak channel |
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