摘要
以昌吉宝平煤矿为研究对象,通过对含水层、采空区、火烧区等主要地下含水体分布及赋水情况进行研究,指出了对矿井安全生产可能造成隐患的主要地下含水体及其影响程度,并有针对性地提出了防治措施和建议。研究认为,可能成为本矿井安全生产隐患的地下含水体主要为侏罗系西山窑组含水层和采空区积水。西山窑组含水层是矿井的直接充水水源,可能对矿井安全造成影响,但由于其富水性相对较弱、补给较差,整体可防可控,建议在开采中做好含水层的超前探测和动态监测,建设矿井排水系统,做好疏放工作;该矿井采空区积水和周边矿井采空区均存在不同程度的积水,在矿井开采中存在采空区积水沿着浅部地层向深部侧向径流的问题;同时,由于相邻煤层间距一般均小于15 m,上部煤层采空区积水易构成下部煤层开采的直接充水水源,存在一定的水害隐蔽致灾因素。在矿井开采中要留设足够的防隔水煤柱,重视对采空区积水隐患探测与排查,及时对采空区积水进行疏放。
Taking Changji Baoping coal mine as the object, through the research on the distribution and water accumulation of main underground aquifers such as aquifer, goaf and burning area, this paper points out the main underground aquifers that may cause hidden dangers to mine safety production and their impact degree, and puts forward targeted prevention measures and suggestions.According to the research, the underground aquifer that may become the hidden danger of safety production of the mine is mainly the aquifer of Jurassic Xishanyao Formation and the ponding in the goaf.Xishanyao Formation aquifer is the direct water filling source of the mine, which may have an impact on the mine safety.However, due to its relatively weak water yield property and poor recharge, it is generally preventable and controllable.It is recommended to do a good job in the advanced detection and dynamic monitoring of the aquifer during mining, build the mine drainage system and do a good job in water drainage;There are different degrees of ponding in the goaf of the mine and in the goaf of surrounding mines.During mine mining, there is a problem that the ponding in the goaf flows laterally from the shallow stratum to the deep.At the same time, since the spacing between adjacent coal seams is generally less than 15m, the water accumulated in the goaf of the upper coal seam is easy to form a direct water filling source for the mining of the lower coal seam, and there are certain hidden disaster causing factors of water damage, sufficient water proof coal pillars shall be reserved during mine mining, attention shall be paid to the detection and troubleshooting of potential ponding in goaf, and the ponding in goaf shall be drained in time.
作者
周梓欣
雍晓艰
ZHOU Zixin;YONG Xiaojian(Xinjiang Coal Field Geology Bureau,Urumqi 830091,China;Xinjiang Coal Comprehensive Exploration Institute,Urumqi 830091,China)
出处
《陕西煤炭》
2023年第1期174-177,190,共5页
Shaanxi Coal
关键词
隐蔽致灾因素
含水层
赋水情况
采空区
火烧区
涌水量
hidden disaster causing factors
aquifer
water-bearing condition
goaf
burning area
water inflow
