北京西山侏罗纪煤田采空区地质特征与地质灾害

Geological characteristics and Geological Disaster ofJurassic Coalfield Empty Sections for Mining in Xishan,Beijing

北京西山侏罗纪煤田开采历史悠久 ,古代小窑开采造成地下浅部窑道纵横、多层采空重叠的状态。现代国营、乡镇及个体矿山开采并举 ,在深部不仅形成多层采空叠置状况 ,且煤层顶板大面积悬空长期不冒落的情况很常见。不同时代的多层次开采构成的立体采空区格局 ,孕育着大规模塌陷及相关灾害的恶果。正确分析采空区地质特征及其与相关地质灾害的关系是灾害预测、减灾防灾的基础。

It was a long history for mining jurassic coalfield of Beijing Xishan. In the past, little kilns caused shallow crisscross kiln paths and multlayered empty sections superposed each other. Modern state's, villages and towns' and individual mining being at the same time, Not only they have formed multlayered empty sections superposing each other in deep, but also the case of big area coal bed-roof hanging in the air, not puking or dropping for a long time is very usual. Vary ages, vary levels' mining formed solid empty sections for mining, this situation is gestating evil consequences of caving in cosmically and interrelated disasters. It is the base of disaster-forecasting, decreasing disaster and defending disaster to right analyzing the geological characteristics of empty for mining and interrelated geological disasters.