摘要
经坊煤矿目前开采的山西组3号煤层逐步枯竭,矿井设计开采太原组8、9、14、15号煤层。奥陶系峰峰组是太原组煤层底板的间接充水含水层。以往大多数勘查成果得出该地区峰峰组岩溶裂隙发育较差,富水性弱-中等的结论,以至于个别矿井在奥灰带压开采危险性评价时甚至将其视为相对隔水层。因此,查明峰峰组的水文地质特征是太原组煤层能否实现安全带压开采的关键。通过岩心采取、抽水试验和水化学分析等多种手段的勘查认为:该地区峰峰组富水性普遍较强,处于主径流带附近富水性极强。该研究对于长治南部地区供水勘查和太原组煤层安全带压开采具有重要的指导意义。
The resource of coal seam No.3 in Shanxi Formation the Jingfang coalmine mining at present is gradually exhausted, thus de- signed mining coal seams to be are Taiyuan Formation coal seams Nos. 8, 9, 14 and 15. The Ordovician Fengfeng Formation is indirect water filling aquifer of Taiyuan Formation coal floor. Most of previous exploration results reckoned that karst fissure development in Fengfeng Formation in the area is rather poor, water yield property weak to medium, so that individual coalmines in their assesslnent of mining under safe water pressure of aquifer even considered the Ordovician limestone as a relative aquifuge. Therefore, to find out hydro- geological characteristics of Fengfeng Formation is the sticking point of Taiyuan Formation coal seams mining under safe water pressure can be realized. Through multiple exploration means of rock coring, pumping test, hydrochemieal analysis etc. have considered that the water yield property of Fengfeng Formation in the area is generally rather strong, and very strong near the main runoff zone. The study has guiding significance to water supply investigation and Taiyuan Formation coal seams mining under safe water pressure in southern Changzhi area.
出处
《中国煤炭地质》
2014年第1期34-38,共5页
Coal Geology of China
关键词
峰峰组
富水性
勘查成果对比
经坊煤矿
Fengfeng Formation
water yield property
comparison of explored results
Jingfang coahnine
