| 综放开采采准巷道护巷煤柱稳定性研究 |
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| 引用本文： | 贾光胜,康立军.综放开采采准巷道护巷煤柱稳定性研究[J].煤炭学报,2002,27(1):6-10. |
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| 作者姓名： | 贾光胜 康立军 |
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| 作者单位： | 1. 煤炭科学研究总院,北京开采研究所,北京,100013;中国矿业大学,北京校区,北京,100083
2. 煤炭科学研究总院,北京开采研究所,北京,100013 |
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| 基金项目： | 国家自然科学基金重点资助项目 (5 973 40 90 ) |
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| 摘 要： | 采准巷道护巷煤柱稳定性决定着巷道的维护状况。从现场观测,数值计算和理论研究3个方面分析了综放工作面回采期间护巷煤柱体内力和位移变化,煤柱失稳的原因,影响煤柱稳定性因素等,运用极限平衡理论提出了综放工作面护巷煤柱宽度的确定方法,并给出了实例和煤柱宽度与巷道岩变形的观测统计结果。
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| 关 键 词： | 综放开采 采准巷道 煤柱 稳定性 应力 位移 围岩 极限平衡理论 |
| 文章编号： | 0253-9993(2002)01-0006-05 |
Study on the chain pillar stability of the developing entry in longwall top-coal mining |
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| JIA Guang sheng ,KANG Li jun.Study on the chain pillar stability of the developing entry in longwall top-coal mining[J].Journal of China Coal Society,2002,27(1):6-10. |
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| Authors: | JIA Guang sheng KANG Li jun |
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| Affiliation: | JIA Guang sheng 1,2,KANG Li jun 1 |
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| Abstract: | The entry upkeep condition is determined by the chain pillar stability of the developing entry. The paper analyses the stress and displacement changes in the chain pillar, the pillar destabilizing reason and the factor of affecting the pillar stability by field observation, numerical calculation and theory analysis during the longwall top coal mining face caving, brings forward a method of calculating the chain pillar width in the longwall top coal mining face by using limiting equilibrium theory and gives a field example and the measured and statistical results of the pillar width and the entry wall rock deformation. |
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| Keywords: | longwall top call mining the developing entry pillar stability |
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