| 煤层底板破坏的断层效应模拟及其在防治水中的应用 |
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| 引用本文： | 冯启言,周来,荆升国,杨天鸿.煤层底板破坏的断层效应模拟及其在防治水中的应用[J].高校地质学报,2010,16(1):19-25. |
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| 作者姓名： | 冯启言 周来 荆升国 杨天鸿 |
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| 作者单位： | 1. 江苏省资源环境信息工程重点实验室（中国矿业大学）, 徐州 221008；2. 中国矿业大学 环境与测绘学院, 徐州 21116；3. 中国矿业大学 矿业工程学院, 徐州 221116；4. 东北大学 资源与土木工程学院, 沈阳 110006 |
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| 基金项目： | 国家自然科学基金项目(50674025)资助 |
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| 摘 要： | 梁北煤矿已发生5次寒武系灰岩底板突水事故,造成重大经济损失。根据矿井的水文地质条件,建立了煤层开采的FLAC数值模型,利用岩石力学及渗流力学理论,分别模拟了无断层和有断层条件下煤层底板采动破坏带的演化规律,重点讨论了断裂深度及断层空间位置对底板破坏深度的影响。结果表明,断层的存在可使底板采动破坏深度增加20%~33%,断层是突水重点防范区域,遇断层前10m直到过断层15m须加强防治水工作。根据模拟结果设计了梁北矿11041,11151,11111三个工作面底板的注浆加固工程,重点注浆层位分别为底板破坏范围和寒武系顶部裂隙发育带,注浆工程增强了底板的阻水能力,实现了工作面的安全回采。
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| 关 键 词： | 底板突水 断层效应 底板破坏深度 数值模拟 梁北煤矿 |
| 修稿时间： | 2010-03-20 |
Simulation of Fault Effect on Mining Failure of Coal Seam Floor and Its Application in Water Disasters Control |
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| FENG Qi-yan,ZHOU Lai,JING Sheng-guo,YANG Tian-hong.Simulation of Fault Effect on Mining Failure of Coal Seam Floor and Its Application in Water Disasters Control[J].Geological Journal of China Universities,2010,16(1):19-25. |
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| Authors: | FENG Qi-yan ZHOU Lai JING Sheng-guo YANG Tian-hong |
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| Affiliation: | 1. Jiangsu Key Laboratory of Resources and Environmental Information Engineering, Xuzhou 221008, China;2. School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China;3. School of Mining Engineering, China University of Mining and Technology, Xuzhou 221116, China;4. School of Resource and Civil Engineering, Northeastern University, Shenyang 110006, China |
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| Abstract: | Five water inrush events happened in Liangbei coal mine. The water source was from the confined Cambrian karst aquifer under the coal seam. According to the hydrogeological conditions of Liangbei coal mine, the numerical models, including non-fault and fault models, were established with FLAC package. Based on the theory of rock mechanics and seepage mechanics, numerical simulations were directed for revealing the failure evolution of the seam floor above the high pressure confined aquifer. Different fault ... |
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| Keywords: | water inrush from seam floor fault effect failure depth of coal seam floor numerical simulation Liangbei coal mine |
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