摘要
为查明贺西矿山西组4#煤层开采受底板高承压太灰含水层的威胁,基于地下水径流理论,对太灰含水层进行了单孔放水试验,得出4#煤底板太灰含水层的富水性和补给排泄条件。结果表明,太灰含水层岩溶发育且存在一定程度的不均一性,富水性差,地下水径流不畅,且地下水交替和循环条件滞缓,但有较高的水位,位于3#、4#煤层之上,有一定的危险性。在此基础上提出了该矿深部开采以疏水降压为主、注浆为辅的底板防治水技术措施,为保障山西组4#煤安全开采提供了合理依据。
In order to find out the threat of No.4 coal seam mining by high pressure the Archaean era limestone aquifer in Shanxi formation of Hexi coal mine,bases on the theory of groundwater flow,single hole drainage experi-ment on the Archaean era limestone aquifer is carried out,obtains the water abundance and the replenishment and drainage conditions of the Archaean era limestone aquifer in No.4 coal seam floor.The results show that the Archaean era limestone aquifer karst development has a certain degree of heterogeneity and the water abundance is poor, groundwater flow is slow,groundwater and cycling conditions are attenuate,but there is a high water level of which is above the coal seam of No.3 and No.4,there is a certain danger.On the basis puts forward the technical measures of floor water prevention and control,it provides the reasonable basis for guarantee safe mining of Shanxi formation No. 4 coal seam.
出处
《山西焦煤科技》
2015年第1期4-7,共4页
Shanxi Coking Coal Science & Technology
关键词
深部开采
单孔放水试验
太灰水
防治水
Deep mining
Single hole drainage experiment
Limestone water in Taiyuan formation
Water pre-vention and control
