| 急斜特厚煤层开采围岩与覆盖层破坏规律 |
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| 引用本文： | 石平五,高召宁.急斜特厚煤层开采围岩与覆盖层破坏规律[J].煤炭学报,2003,28(1):13-16. |
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| 作者姓名： | 石平五 高召宁 |
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| 作者单位： | 西安科技学院,能源科学与工程系,陕西,西安,710054 |
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| 摘 要： | 为了再造一个山川秀美的西北地区,需要进行地下矿床开采引起围岩和地表覆盖层破坏规律,研究了急斜特厚煤层水平分段放顶煤开采围岩破坏规律,提出开采过程顶煤和围岩的破坏过程大致可分为顶煤放出区,沿底坐滑区,顶板离层破坏区和煤岩滞后垮落区4个区,建立了急斜老顶狭长板模型,分析其变形破坏特征及主要影响因素,得出急斜特厚煤层开采破坏主要向煤层上方发展,地表呈串珠状塌陷坑,在老顶上方地质破坏不显著,只要对塌陷坑进行科学充填,就可实现地表绿化及城市利用。
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| 关 键 词： | 特厚煤层 围岩 覆盖层 顶板 急斜煤层 破坏规律 |
| 文章编号： | 0253-9993(2003)01-0013-04 |
| 修稿时间： | 2002年1月25日 |
The failure laws of surrounding rocks and over lying bed in the steep special thickness seam mining |
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| SHI Ping-wu,GAO Zhao-ning.The failure laws of surrounding rocks and over lying bed in the steep special thickness seam mining[J].Journal of China Coal Society,2003,28(1):13-16. |
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| Authors: | SHI Ping-wu GAO Zhao-ning |
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| Abstract: | In order to build a beautiful scenery of mountains in the northwest zone,it is necessary to study the failure laws of surrounding rocks and overlying bed induced to mine in the underground deposits. The failure laws of surrounding rocks in the horizontal section top coal caving of steep special thickness seam is studied, the top coal and surrounding rocks unstable failure which divides four areas including top coal caving area, slipping area along the bed rock, roof separation and failure area,delayed caving area of coal and rock ect is put forward, the thin and long sheet model of steep main roof is built,the deformation and failure character and main affect factors of main rock is analyzed and its failure trend to the upper of seam. Green surface and regular activity of cities can be realized with equitable filling of the collapse area. |
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| Keywords: | steep seam failure law thin and long sheet beading sink pit |
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