| 布尔台矿重复采动下突水危险性数值模拟研究 |
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| 引用本文： | 范文斌,姚邦华.布尔台矿重复采动下突水危险性数值模拟研究[J].矿业安全与环保,2011,38(1). |
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| 作者姓名： | 范文斌 姚邦华 |
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| 作者单位： | 1. 山西省潞安矿业集团公司安监局,山西,长治,046204
2. 中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏,徐州,221008 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)项目(2007CB209400); 国家自然科学基金重点项目(50634050,50904065) |
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| 摘 要： | 双煤层重复采动后,原有覆岩裂隙将会再次发育,使得顶板突水的危险性增加,防治水工作变得复杂。基于内蒙古布尔台矿已有的工程地质资料,采用数值模拟软件RFPA2D,建立了双煤层重复采动的数值模型,模拟研究了覆岩破断、裂隙发育和再发育规律,分析了采动前后采场垂直应力的变化情况,评价了突水以及二次突水的危险性。数值模拟结果表明:重复采动可引起原有煤层覆岩裂隙再发育,使得原有顶板裂隙发育的高度增大,从而可能引发突水。
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| 关 键 词： | 重复采动 数值模拟 覆岩裂隙 突水 |
Numerical Simulation Study of Water-inrush Risk in Remining of Double Coal Seams in Buertai Mine |
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| FAN Wen-bin,YAO Bang-hua.Numerical Simulation Study of Water-inrush Risk in Remining of Double Coal Seams in Buertai Mine[J].Mining Safety & Environmental Protection,2011,38(1). |
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| Authors: | FAN Wen-bin YAO Bang-hua |
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| Affiliation: | FAN Wen-bin,YAO Bang-hua |
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| Abstract: | Remining of double coal seams can make the original fractures of the overlying strata redevelop again, which may cause the water-inrush risk in the roof to become more serious and the perevention and control work of underground water to become more complicated. In this paper, a numerical model for the remining of double coal seams was set up according to the existing geological data in Buertai Mine of Inner Mongolia and by using the software RFPA2D, simulation study was made on the failure of overlying stra... |
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