| 急倾斜远距离下保护层开采过程数值模拟及现场应用 |
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| 引用本文： | 郑万成,杨波,李一波.急倾斜远距离下保护层开采过程数值模拟及现场应用[J].煤炭工程,2011,0(2):82-84. |
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| 作者姓名： | 郑万成 杨波 李一波 |
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| 作者单位： | 1. 四川省煤炭设计研究院,四川,成都,610031
2. 云南省一九八煤田地质勘探队,云南,昆明,650041 |
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| 基金项目： | 国家自然科学基金项目(50834005) |
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| 摘 要： | 制定了长青煤矿煤层开采的技术方案；然后过基于计算机系统的UDEC3.1软件模拟了K93煤层作为下保护层开采时覆岩垮落发展过程及裂隙演化规律，通过数值模拟表明了K93煤层作为保护层的有效性。最后通过现场实地效果考察，得出了K93煤层开采前后，K7a煤层瓦斯压力、钻孔瓦斯涌出量的变化规律。长青煤矿急倾斜远距离下保护层开采的防突技术对整个圭山煤田乃至其他具有类似特征的急倾斜煤层开采有着重要的现实意义。
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| 关 键 词： | 急倾斜 远距离 下保护层 数值模拟 |
| 收稿时间： | 2010-06-17; |
Numerical simulation on mining process of steep inclined and long distance protective seam and site application |
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| ZHENG Wan-cheng,YANG Bo,LI Yi-bo.Numerical simulation on mining process of steep inclined and long distance protective seam and site application[J].Coal Engineering,2011,0(2):82-84. |
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| Authors: | ZHENG Wan-cheng YANG Bo LI Yi-bo |
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| Affiliation: | ZHENG Wan-cheng1,YANG Bo1,LI Yi-bo2(1.Sichuan Provincial Coal Design and Research Institute,Chengdu 610031,China,2.Yunan Provincial No.198 Coalfield Geological Exploration Team,Kunming 650014,China) |
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| Abstract: | Base on the UDEC3.1 software of the computer system,the paper simulated and analyzed the crack evolution law of the overlying strata during the mining in No.K93 seam as the underneath protective seam.The simulation results showed that the No.K93 seam have the validity as the protective seam.Finally with the site effect investigation,the gas pressure of No.K7a seam and the borehole gas emission variation law before and after the mining of No.93 seam were obtained. |
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| Keywords: | steep inclination long distance underneath protective seam numerical simulation gas pressure |
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