| 北京西山煤炭采空区地面塌陷危险性分析 |
| |
| 引用本文： | 纪玉杰.北京西山煤炭采空区地面塌陷危险性分析[J].城市地质,2003,15(3):8-22. |
| |
| 作者姓名： | 纪玉杰 |
| |
| 作者单位： | 北京市地质研究所 北京100011 |
| |
| 摘 要： | 北京西山煤炭资源主要分布在百花山、庙安岭—髫髻山、九龙山—香峪大梁、北岭等向斜区，范围达1000km^2以上。含煤层位属石炭—二叠纪和侏罗纪，在已开采的煤炭产量中，有76％出自侏罗纪煤系，24％出自石炭—二叠纪煤系。在800余年开采历史中，已采出煤炭数亿吨。地表及地下浅部煤炭已被采完，在地下深部也形成了大面积多层次采空区。20世纪80年代以来，与采煤有关的地面塌陷灾害频繁凸现。本文作者通过对不同历史阶段采煤方法的差异、多层叠置的采空区结构特点等的分析，提出进入中—晚期开采时期的煤田，塌陷坑、地裂缝、山体滑塌、地面不均匀沉降、破坏性矿震等已构成灾害链，各类煤炭采空区进一步塌陷的危险性依然存在。在北京西山，不论是进一步的煤炭开采，还是地表居民的生产生活，以及国家未来的经济建设，都不应忽视煤炭采空区地面塌陷的危险性。
|
| 关 键 词： | 北京西山 煤炭采空区 地面塌陷 危险性分析 灾害链 |
Risk Analysis of the Continual Surface Collapse above Coal- mining Worked-out Arrea in Xishan (Western Hills),Beijing |
| |
| JI Yu-jie.Risk Analysis of the Continual Surface Collapse above Coal- mining Worked-out Arrea in Xishan (Western Hills),Beijing[J].City Geology,2003,15(3):8-22. |
| |
| Authors: | JI Yu-jie |
| |
| Abstract: | The coal resource of Xishan(Western Hills),Beijing,is mainly distributed in the syncline limbs,such as Baihuashan,Miaoanling-Tiaojishan,Jiulongshan-Xiangyudaliang and Beiling syncline and so on,with the coverage of more than 1000 km2?The coal-bearing strata belong to Carboniferous-Permian and Jurassic.Among the total coal production,there are 76% coming from Jurassic coal bed,and 24% from Carboniferous- Permian coal bed.Several hundred million tons coal has been mined during the over 800 years mining.Therefore,the coal in surface and shallow level had been worked out;meanwhile,the large-area and multi- layer goaves were formed in the coalfields.Since 1980s,the surface collapse disaster related to coal mining appears again.On the basis of analysis on the change of mining technique in history and the structural feature of multi-layer superposed goaves,the author points out that,there has formed a disaster chain including collapse pit,surface fissure,landslide,surface inhomogeneous subsidence and destructive mining-quake in the coal fields that has been in the middle or late stage of mining.For safety of habitant,coal mining and future economic construction,the risk of surface collapse should not be ignored in the coal mining worked-out areas in Xishan,Beijing. |
| |
| Keywords: | coal mining worked-out area continual surface collapse disaster chain risk analysis Xishan(Western Hills) of Bijing |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
