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| 近距煤层开采的合理错距 | |
| 引用本文： | 石平五,王金安,赵朔柱. 近距煤层开采的合理错距[J]. 西安科技大学学报, 1988, 0(3) |
| 作者姓名： | 石平五 王金安 赵朔柱 |
| 作者单位： | 西安矿业学院矿山压力教研室，西安矿业学院矿山压力教研室，西安矿业学院矿山压力教研室 |
| 摘 要： | 本文根据在金刚煤矿矿压观测和相似模拟研究结果,提出在缓倾斜近距煤层联合开采时,上下煤层的相互影响.上煤层周期性矿压显现对下煤层影响与上覆岩层形成的平衡结构特征有关.按一定错距,下煤层开采有可能使其成为非稳定结构,矿压显现加剧。一定距离内能形成稳定结构,但移动量由联合开采煤层总厚变决定,支架阻力不够,控顶区会形成危险结构,导致冒顶发生。有限元数学模拟进一步证实和发展了上述论点. |
| 关 键 词： | 近距煤层 合理错距 覆岩平衡结构 非稳定结构 危险结构 |
THE RATIONAL DISTANCE BETWEEN UPPER AND LOWER FACES OF MULTI-SEAMS WORKING |
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| Shi Pinwu Wang Jinan Zhao Suozhu. THE RATIONAL DISTANCE BETWEEN UPPER AND LOWER FACES OF MULTI-SEAMS WORKING[J]. JOurnal of XI’an University of Science and Technology, 1988, 0(3) | |
| Authors: | Shi Pinwu Wang Jinan Zhao Suozhu |
| Affiliation: | Shi Pinwu Wang Jinan Zhao Suozhu |
| Abstract: | Based on the rock pressure measurement in Jingang Coal Mine and simulatig investigation,the interaction of upper and lower faces of slightly inclined multi-seams working is put forward.The influence of periodic rock pressure manifestation caused by upper seam working on the lower seam depemnds on the features of equilibrium Structure formed byoverlying stata. Under definite distance between upper and lower faces,lower seam working may cause it to tur into unstable structure,loading to severe rock pressure manifestation,and within certain distance the stable structure may be also formed.The moving quantity is determined by aggregate thickness of combining working.Under insufficient support resistance,dangerous stru cture may take place in the area of face roof under conrtol,leading to roof collapse.The above mentioned viewpoints are proved and developed further by FEM mathematical simulation. |
| Keywords: | multi-seams rational distance between upper and lower faces overlying strata equilibrium structure dangerous structure |
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