| 深井高应力巷道卸压法防治底臌机理研究 |
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| 引用本文： | 袁瑞甫,程乐金,李怀珍.深井高应力巷道卸压法防治底臌机理研究[J].矿业研究与开发,2009(4):31-33,77. |
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| 作者姓名： | 袁瑞甫 程乐金 李怀珍 |
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| 作者单位： | 河南理工大学能源科学与工程学院;河南省煤炭工业局; |
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| 基金项目： | 河南理工大学青年基金重点项目(Q2008-51) |
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| 摘 要： | 依据某煤矿的地质条件,对该矿轨道上山的底臌现象进行了数值模拟研究,并对采用巷道底板切槽、两帮切槽进行卸压条件下的围岩应力分布和底板岩层位移进行了分析。卸压法可以使巷道在开挖时就处于相对的低应力区,从而保护围岩的完整性,为后期巷道的支护加固创造有利条件。底板开槽时,开槽深度对卸压效果有明显的影响。模拟结果表明,开槽深度为底板宽度的60%左右时,卸压效果最好且开槽的工程量最少。
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| 关 键 词： | 底臌 卸压法 数值模拟 应力分布 位移 |
Research on Mechanism of Controlling Floor Heave by Stress Releasing Method in Deep Coal Mine |
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| Yuan Ruifu,Cheng Lejin and Li Huaizhen.Research on Mechanism of Controlling Floor Heave by Stress Releasing Method in Deep Coal Mine[J].Mining Research and Development,2009(4):31-33,77. |
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| Authors: | Yuan Ruifu Cheng Lejin and Li Huaizhen |
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| Affiliation: | 1.School of Energy Science and Engineering;Henan Polytechnic University;Jiaozuo;Henan 454000;China;2.Henan Cool Industrial Bureau;Zhengzhou;Henan 450000;China |
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| Abstract: | According to the geotechnical conditions in some coal mine,numerical simulation was made on the floor heave of the railway upward gateway.And the distribution of stresses in surrounding rock and displacement of floor under stress-release cut being excavated in the floor or two sides of the gateway were analyzed.The stress releasing method could method could transfer the high stress to inside rock and protected the integrality of surrounding rock after gateway being excavated,so as to create favorable condit... |
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| Keywords: | Floor heave Stress releasing method Numerical simulation Stresses distribution Displacement |
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