摘要
为研究陕西某矿承压水上采场底板破坏规律,以陕西某矿10^#煤层为研究背景,针对其底板主要是受到奥灰水影响的实际情况进行研究。通过理论分析和对煤层开挖过程中不同水压和隔水层厚度进行数值模拟,得出了承压水上采场底板破坏的规律。研究表明底板的破坏范围会随着煤层开挖距离的增大而扩大,在煤层开挖120m之后,底板破坏的深度渐渐稳定。底板受到的水压大小和隔水层厚度都会对底板的破坏产生影响,其中隔水层的厚度起到的作用较大。
In order to study the failure law of the floor of the mining platform in a mine in Shaanxi,the 10^# coal seam of a mine in Shaanxi was taken as the research background,and the actual situation of the bottom plate affected by Ordovician limestone water was studied.Through theoretical analysis and numerical simulation of different water pressure and thickness of the aquifer during the excavation of the coal seam,the law of the failure of the floor of the pressure-bearing water stop is obtained.The research shows that the damage extent of the bottom plate will expand with the increase of the coal seam excavation distance.After the coal seam is excavated for 120 m,the depth of the floor damage is gradually stabilized.The water pressure and the thickness of the water-repellent layer on the bottom plate will affect the damage of the bottom plate,and the thickness of the water-repellent layer plays a greater role.
作者
冯裕堂
Feng Yutang(Mining Corporation of Caojiatan,Shaanxi Coal Yubei Coal Industry Co.,Ltd.)
出处
《现代矿业》
CAS
2019年第7期122-124,共3页
Modern Mining
