摘要
在分析矿井地质条件的基础上,根据经验公式,研究确定薄煤层条件下沿空掘巷小煤柱的合理尺寸。为了保证巷道的稳定性,根据试验面的地质条件,结合实践经验以及采矿理论确定试验巷道采用锚网梁索联合支护的方式。现场试测表明,采用锚网梁索联合支护方式,能够满足安全生产的需要。留4 m小煤柱沿空掘巷的实践,取得了良好的经济效益。
According to the analysis on geological conditions of coal mine,based on the empirical formula,the reasonable width of small coal pillar in gob-side entry driving was studied and determined under the condition of thin seam.To ensure the stability of the mine gateway,based on the geological condition of coal seam in the test face and combined with practical experience and mining theory,combined supporting with bolt mesh and cable method was determined on test roadway.The site measurement results show that,by using cable anchor supporting method,safety production can be ensured.Good economic benefit has been obtained through the practice of small coal pillar（4 m）technology to protect mine roadway.
出处
《中州煤炭》
2011年第10期63-65,共3页
Zhongzhou Coal
关键词
沿空掘巷
小煤柱
支护方式
薄煤层
锚网索
gob-side entry driving
small coal pillar
supporting method
thin coal seam
cable anchor
