深部泵房硐室群位置确定及支护技术研究

Study on the location and support technology of deep pump room refuge group

为保证邢东矿深部泵房硐室群的稳定,采用FLAC 3D软件进行了数值模拟。结果表明,在工作面采空区底板中有一个近似梯形的非塑性区域,围岩相对稳定,确定排水系统泵房顶板距离2127工作面采空区为13.8 m。在分析硐室群稳定机理的基础上,提出了锚网梁、U型钢环形支架、混凝土浇筑3种支护方式有机结合形成一个多层有效组合拱的支护方式,取得了理想的效果。

Numerical simulations were carried out with FLAC 3D software to ensure the stability of the deep pump room refuge group in Xingdong Mine.The results showed that there was a trapezoidal non-plastic area in the bottom plate of the working face,and the surrounding rock was relatively stable,the distance from the top plate of the pump room of the drainage system to the 2127 working face goaf was 13.8 m.Based on the analysis of the stability mechanism of the chamber group,the organic combination of three types of support methods anchor mesh beam,U-shaped steel ring support,and concrete pouring was proposed to form a multi-layer effective combination arch support.The proposed method was a combination of anchor mesh beam,U-shaped steel ring support and concrete casting.