山东煤炭科技2024，Vol.42Issue(5)：68-72,78,6.DOI:10.3969/j.issn.1005-2801.2024.05.014
巨厚砾岩层下特厚煤层开采覆岩变形移动特征研究
Research on Deformation and Movement Characteristics of Overlying Rock in Extra-thick Coal Seam Mining Under Super-thick Conglomerate Layer
王健 1赵晓凡2
作者信息
- 1. 山西华阳集团新能股份有限公司一矿,山西 阳泉 045008
- 2. 华北理工大学应急管理与安全工程学院,河北 唐山 063210
- 折叠
摘要
Abstract
The deformation and movement of the overlying super-thick conglomerate layer in top coal caving mining directly affect the manifestation of mine pressure in the fully mechanized mining face.Based on the geological and mining conditions of the fully mechanized caving face in Qianqiu Coal Mine,numerical simulation methods are used to study the deformation and movement characteristics of the overlying super-thick conglomerate layer in fully mechanized caving mining.As the fully mechanized caving face advances,the overlying rock of the coal seam gradually deform,move and collapse,causing layer separation and horizontal displacement of the super-thick conglomerate layer.The horizontal displacement amount L(x)at the measuring point is a nonlinear function of the advancing distance C1 of the fully mechanized caving face and the horizontal distance x from the measuring point to the open cut eye.Similar simulation results indicate that when the advancing degree of the fully mechanized caving face is 665 m,the first collapse of the super-thick conglomerate layer occurs.The research conclusion provides technical support for the control of surrounding rock in fully mechanized caving mining.关键词
综放/砾岩/变形/模拟Key words
fully mechanized/conglomerate/deformation/simulation分类
矿业与冶金引用本文复制引用
王健,赵晓凡..巨厚砾岩层下特厚煤层开采覆岩变形移动特征研究[J].山东煤炭科技,2024,42(5):68-72,78,6.
