地方小煤矿深部资源开采水文地质环境分析

Analysis of hydrogeological conditions for deep mining of small coal mine

为了优化资源利用,降低矿井采掘过程中面临的各种水害问题,文章以某地方重组小煤矿为例,通过分析该矿开采现状,结果得出:矿区充水水源主要是大青灰岩水和本溪灰岩水,对矿井威胁较大的水患是奥灰水及老空水,而导水断层、导水陷落柱则是矿井突水的主要导水构造,采前进行底板及本溪灰岩含水层预注浆加固;在采掘过程中,通过综合运用物探和钻探、对异常体进行注浆加固、对回采影响范围内的老空水提前进行疏放等防治水措施,能够有效降低水害事故的发生,为实现深部煤炭资源开采提供一定的参考依据。

To optimize the utilization of resources and reduce all kinds of water disasters in the process of mining,this paper takes a small coal mine as an example,through analyzing the current situation of mining,the results show that the main water sources of water filling in the mine area are Daqing limestone water and Benxi limestone water,and the water hazard that threatens the mine is Ordovician limestone water and old air water,while the main water inrush is the water conducting fault and water guiding collapse pillar In order to guide the water structure,the floor and Benxi limestone aquifer are pre grouted and consolidated before mining;in the process of mining,the prevention and control measures such as comprehensive use of geophysical prospecting and drilling,grouting and reinforcement of abnormal bodies,and early release of old empty water within the scope of mining influence can effectively reduce the occurrence of water damage accidents,and provide a certain reference for the realization of deep coal resources mining.