梅山铁矿井下渗漏水防治技术

发布时间：2018-03-28 17:27

本文选题：渗漏　切入点：入渗率　出处：《金属矿山》2015年03期

【摘要】：针对梅山铁矿井下防渗漏水对生产安全造成的隐患治理问题,在分析梅山铁矿水文地质条件及矿山开采现状的基础上,开展了井下防渗漏水综合治理技术方案研究与应用。通过现场调查分析了矿山井下渗漏水现状,研究表明地质构造、矿物成分及人为开挖活动是导致部分揭露矿岩在遇水后稳定性下降的主要原因。基于崩落法开采造成地表塌陷,分析了暴雨入渗的特征,并采用水均衡法获得暴雨日入渗率为8%,实现了井下涌水量预测。将井下渗漏水情况分为采区渗水与井筒渗水2种类型。通过综合比较分析,副井、西南井、北风井采用帷幕注浆方案。1#主井采用局部注浆方案;将巷道渗漏水现象细分为顶板淋水、底板及其墙角渗水、巷道墙体预留孔渗水、大面积巷道淋水、渗漏水和围岩中存在异常水包5类,并提出了相应的治理措施。以上方案在梅山铁矿的实施取得了显著效果。
[Abstract]:Based on the analysis of hydrogeological conditions and current mining situation of Meishan Iron Mine, the hidden dangers caused by leakage prevention in underground mine of Meishan Iron Mine are analyzed. The research and application of comprehensive control scheme for underground seepage prevention water are carried out. The present situation of underground leakage water is analyzed through field investigation, and the study shows that the geological structure, Mineral composition and human excavation activities are the main reasons that lead to the decline of rock stability after water exposure. Based on the collapse of the surface caused by caving mining, the characteristics of rainstorm infiltration are analyzed. With the method of water balance, the daily infiltration rate of heavy rain is 8%, and the downhole water inflow prediction is realized. The underground leakage is divided into two types: seepage in the mining area and water seepage in the wellbore. Through comprehensive comparison and analysis, the secondary well and the southwest well are analyzed. In the north air well, the curtain grouting scheme is adopted. The local grouting scheme is used in the main well. The leakage of roadway is divided into roof water, bottom plate and its corner seepage, tunnel wall reserving hole seepage and large area roadway dripping. There are 5 kinds of abnormal water package in seepage and surrounding rock, and the corresponding treatment measures are put forward. The implementation of the above scheme in Meishan Iron Mine has achieved remarkable results.
【作者单位】：南京梅山冶金发展有限公司矿业分公司;中南大学资源与安全工程学院;
【基金】：国家自然科学基金项目(编号:51204205) 教育部博士点基金项目(编号:20110162120056)
【分类号】：TD745

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