鹿台山煤矿带压开采技术条件分析与评价

Analysis and Evaluation of Technical Conditions of Mining under Pressure in Lutaishan Coal Mine

华北型煤田C-P系煤层底板水是煤矿开采的主要水害威胁。为探讨鹿台山煤矿2号、15号煤层开采过程中底板水突水危险性,在收集井田水文地质资料的基础上,分析了煤层赋存及变化趋势特征、煤层围岩含水层和隔水层的垂向组合特征;采用《煤矿防治水细则》中规定的突水系数进行了底板突水危险性研究,计算了2号、15号煤层底板突水系数,提出了临界开采深度评价模型,并确定了临界开采深度的量化取值,对突水危险性进行了区划。研究结果为该矿未采区水害管理与防治提供了安全技术保障。

The coal seam floor water of C-P system in North China type coalfield is the main water hazard threat in coal mining.In order to discuss the risk of floor water inrush during the mining of No.2 and No.15 coal seams in Lutaishan Coal Mine,based on the collection of hydrogeological data in the mine field,this paper analyzed the characteristics of coal seam occurrence and change trend,the vertical combination characteristics of coal seam surrounding rock aquifer and aquiclude;it used the water inrush coefficient stipulated in Detailed Rules for Prevention and Control of Water in Coal Mines to study the risk of water inrush from the floor,calculated the water inrush coefficient from the floor of No.2 and No.15 coal seams,put forward the evaluation model of the critical mining depth,determined the quantitative value of the critical mining depth,and divided the risk of water inrush.The research results provided the safety technical guarantee for the management and prevention of the water disaster in the mining area.