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基于FLAC3D的急倾斜厚煤层卸压瓦斯抽采数值模拟

李根威, 王艳永, 蔡培培

李根威, 王艳永, 蔡培培. 基于FLAC3D的急倾斜厚煤层卸压瓦斯抽采数值模拟[J]. 煤矿安全, 2017, 48(1): 141-143,148.
引用本文: 李根威, 王艳永, 蔡培培. 基于FLAC3D的急倾斜厚煤层卸压瓦斯抽采数值模拟[J]. 煤矿安全, 2017, 48(1): 141-143,148.
LI Genwei, WANG Yanyong, CAI Peipei. Numerical Simulation of Pressure Relief Gas Extraction in Steeply Inclined Thick Coal Seam Based on FLAC3D[J]. Safety in Coal Mines, 2017, 48(1): 141-143,148.
Citation: LI Genwei, WANG Yanyong, CAI Peipei. Numerical Simulation of Pressure Relief Gas Extraction in Steeply Inclined Thick Coal Seam Based on FLAC3D[J]. Safety in Coal Mines, 2017, 48(1): 141-143,148.

基于FLAC3D的急倾斜厚煤层卸压瓦斯抽采数值模拟

Numerical Simulation of Pressure Relief Gas Extraction in Steeply Inclined Thick Coal Seam Based on FLAC3D

  • 摘要: 运用FLAC3D模拟软件,对大黄山煤矿的急倾斜厚煤层开采过程进行卸压瓦斯抽采的数值模拟,得出两层煤的应力分布规律及顶底板的位移变化规律。对中大槽煤层工作面底板煤岩层的受力特性进行分析,认为有必要对卸压区域煤体进行瓦斯预抽和卸压瓦斯抽采。根据现场实测数据得出,接替工作面残余瓦斯压力为0.21 MPa,残余瓦斯含量为2.873 m3/t,可解析瓦斯量为0.563 m3/t,可判定该区域内瓦斯抽采效果达标。
    Abstract: By using FLAC3D simulation software, the numerical simulation of pressure relief gas drainage was carried out in steeply inclined thick coal seam mining process of Dahuangshan Coal Mine, and the stress distribution and displacement laws of roof and floor of two layers of coal was obtained. We analyze the coal and rock stress characteristics of the coal seam floor in the middle and large slots working face. It is necessary to carry out gas pre-extraction and pressure relief gas drainage. According to the measured data in field, the residual gas pressure of the replacing working surface is 0.21 MPa, the residual gas content is 2.873 m3/t, and the amount of gas can be desorbed is 0.563 m3/t, which can determine that the gas drainage effect in this area is up to the standard.
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  • 发布日期:  2017-01-19

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