基于脆弱性指数法的煤层底板突水危险程度评价

Evaluation of water inrush risk degree from coal seam floor based on vulnerability index method

矿井突水是困扰许多煤矿的一道难题,也直接威胁矿井的安全生产,而煤层底板突水事故的发生具有随机性和复杂性,对生产技术人员来说,预测要有实时性和准确性。以推广应用新技术和新方法为指导思想,合理评价奥灰岩溶水对开采煤层的突水危险程度为目的,以山西汾西紫金煤业一号井井田为例,应用脆弱性指数法这一新型的评价方法,结合井田具体的水文地质条件和煤层开采现状,对该井田内2号、11号煤层底板突水危险程度进行综合评价,重点划分奥灰水对开采下组煤的危险性评价分区,并与传统的突水系数法评价结果进行比照,凸现出该方法的科学性和合理性,从而更好地指导矿井的生产工作。

Mine water inrush is a difficult problem that plagues many coal mines,and it also directly threatens the safety of mine production.The occurrence of coal seam floor water inrush accidents is random and complex.For production technicians,prediction must be real-time and accurate.Taking the popularization and application of new technologies and new methods as the guiding ideology,and the purpose of rationally evaluating the water inrush risk of lime karst water to mining coal seams,taking the mine field of the new evaluation method,combined with the specific hydrogeological conditions of the mine field and the current status of coal seam mining,comprehensively evaluated the risk of water inrush from the floor of the No.2 and No.11 coal seams in the mine field,and focused on the evaluation of the risk of ash water to the coal formation under mining.The results were compared with the evaluation results of the traditional water inrush coefficient method,which highlighted the scientificity and rationality of the method,so as to better guide the production work of the mine.