充填体压缩性能的试验性研究

The Experimental Study on Compressive Property of Backfill

为保障充填开采对抑制地表沉陷影响的高效性,以冀中能源邢台煤矿为工程背景,对充填体变形多个影响因素展开分析,就充填矸石粒径大小的影响进行了试验性研究。研究表明,影响地表沉陷的主要因素之一是充填体压缩率;矸石粒径大小与充填体压缩率有一定的相关性,可通过优化选择矸石粒径来调节矸石的压缩率,以此来控制地表沉陷。

In order to ensure the efficiency of backfill mining to suppress the surface subsidence, by taking Xingtai Coal Mine in Jizhong Energy Group as the project background, several factors which af-fected the deformation of the backfill were analyzed, an experimental study was carried out on the effect of the size of the filling gangue. The research shows that one of the main factors affecting surface subsidence is the amount of compression of the backfill. The size of the gangue particle has a certain correlation with the amount of compression of the backfill, and the surface subsidence can be controlled by optimizing the gangue particle to adjust the amount of compression of the backfill.