摘要
沁水盆地长平矿位于沁水煤盆地东缘,主要开采山西组3煤及太原组8煤、15煤,矿井采掘生产中主要受到石炭系太原组、奥陶系峰峰组、马家沟组的岩溶承压水威胁。通过分析地质、物探资料,主要研究了各煤层底板岩溶裂隙形成条件及发育规律,岩溶承压水赋存特征及动态规律。结果表明:岩溶形态主要以小溶孔及溶蚀裂隙为主,且随着地层倾向(北西向)呈逐步减弱趋势;石炭系与奥陶系灰岩各含水层均表现为弱富水性,平面上以小型分散状静态水体为主,且随地层倾向逐渐减弱,垂向上各含水层间无水力联系。
The Changping coalmine is situated at the eastern margin of the Qinshui coal basin. Main workable coal seams have Shanxi Formation coal No.3 and Taiyuan Formation coal Nos.8 and15. The main threat during the coalmine production is from Carboniferous Taiyuan Formation, Ordovician Fengfeng and Majiagou formations karst confined water. Through analysis of geological and geophysical data, has mainly studied each coal floor karst fissure formation condition and development pattern, karst confined water hosting features and dynamic pattern. The result has shown that the karst features have mainly small karst hollows and corroded fissures, and a trend of gradually weakening along with strata dip（NW）. Aquifers in Carboniferous and Ordovician limestone all present weak water yield property; on plane, mainly small dispersed static water bodies, gradually weakening along with strata dip; vertically no hydraulic connection among aquifers.
出处
《中国煤炭地质》
2016年第4期49-55,70,共8页
Coal Geology of China
关键词
灰岩承压水
带压开采
岩溶裂隙
赋存特征
富水性
长平煤矿
limestone confined water
mining under safe water pressure of aquifer
karst fissure
hosting features
water yield property
Changping coalmine
