大海则煤矿2~#煤层顶底板工程地质特征

Roof and floor engineering geological characteristics of 2~# coal seam in Dahaize Coal Mine

在煤矿生产过程中,煤层顶底板的岩性及其工程性质,直接影响到煤层的回采效率、回采方法、工作面管理和生产作业环境安全条件等,因此,对于煤层顶底板工程地质特征研究就显得很有必要。基于上述认识,以大海则煤矿首采区2~#煤层顶底板为研究对象,从工程地质的角度出发,对其岩性特征、岩石物理力学性质、岩体质量及稳定性进行系统分析,为煤矿生产阶段工作面支护、萨拉乌苏组含水层保护和安全生产提供依据。

In the process of coal production,the lithology and engineering condition of coal seam roof and floor directly affects the coal mining efficiency,mining method,working face management,work environment and safety conditions.Therefore,it is very necessary to study the engineering geological characteristics of coal seam roof and floor. Taking the roof and floor of 2~# coal seam in Dahaize Coal Mine as the research object,the lithologic character,rock physical and mechanical properties,quality and stability of rock mass was systematically analyzed. The result provides the basis for the supporting of coal mining face,the protection of Salawusu group aquifer and the safety production.