动压影响下陷落柱突水机理及治理技术研究
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摘要
陷落柱是一种特殊的地质构造,陷落柱突水已经成为危害我国矿井安全生产的重大灾害之一。本文主要采用理论分析与现场实测相结合的研究方法,根据陷落柱顶底板突水的机理将顶底板突水模式划分为两种子模式,通过薄板理论和剪切破坏理论推导出了各模式下的突水判据,并建立了煤层底板陷落柱渗流突水模型;运用理论分析得出的突水判据对1103工作面底板发生突水危险性进行预测,为保证工作面安全生产对底板进行注浆加固,取得了较好的工程效果。
Collapse column is a special geological structure, Water inrush from collapse column has become one of the major disasters that endanger the safety of mine production in China. In this paper, theoretical analysis and field measurement are combined, according to the mechanism of water inrush on top and bottom of collapse column, water inrush mode of top and bottom plate is divided into two seed modes, the water inrush criterion of each mode is derived from thin plate theory and shear failure theory, the seepage water inrush model of collapse column of coal seam floor is established; According to the water inrush criterion obtained from theoretical analysis, the water inrush risk of the floor of 1103 working face was predicted, in order to ensure the safe production of the working face, the grouting reinforcement of the bottom plate is carried out.
Collapse column is a special geological structure, Water inrush from collapse column has become one of the major disasters that endanger the safety of mine production in China. In this paper, theoretical analysis and field measurement are combined, according to the mechanism of water inrush on top and bottom of collapse column, water inrush mode of top and bottom plate is divided into two seed modes, the water inrush criterion of each mode is derived from thin plate theory and shear failure theory, the seepage water inrush model of collapse column of coal seam floor is established; According to the water inrush criterion obtained from theoretical analysis, the water inrush risk of the floor of 1103 working face was predicted, in order to ensure the safe production of the working face, the grouting reinforcement of the bottom plate is carried out.
引文
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[5]朱万成,魏晨慧,张福壮,杨天鸿.流固耦合模型用于陷落柱突水的数值模拟研究[J].地下空间与工程学报,2009,05:928.933.
[6]宋振骐.实用矿山压力控制[M],徐州:中国矿业大学出版社,1989,15.37
[2]李连崇,唐春安,左宇军,李根,刘超.煤层底板下隐伏陷落柱的滞后突水机理[J].煤炭学报,2009,09:1212.1216.
[3]张宝柱,陈振东.华北型煤田岩溶陷落柱分布规律及其水文地质意义[J].阜新矿业学院学报(自然科学版),1996(03):44-47.
[4]樊怀仁,夏玉成,侯恩科等.矿井陷落柱的分布规律及其预测[J].西安矿业学院学报,19949(2):190-194+144.
[5]朱万成,魏晨慧,张福壮,杨天鸿.流固耦合模型用于陷落柱突水的数值模拟研究[J].地下空间与工程学报,2009,05:928.933.
[6]宋振骐.实用矿山压力控制[M],徐州:中国矿业大学出版社,1989,15.37