铜坑矿细脉带矿体特大事故隐患区治理研究-矿业工程专业论文.docx

摘要铜坑锡矿是华锡集团有限责任公司的一个主体矿山，随着矿山开 采的不断深入，开采技术条件日趋复杂。浅部细脉带矿体矿石自燃所 导致的资源损失以及地下开采所形成的大量采空区严重制约了矿山 的生产与发展。为了充分利用有限的矿产资源，保障井下作业人员与 设备安全及保护矿山环境，采取积极有效的措施进行矿山火区事故隐 患区及空区地压灾害的治理对实现矿山可持续发展具有重要意义。本文以铜坑矿细脉带矿体为研究对象，针对如何治理矿山事故隐 患问题开展研究，主要研究内容如下：(1)以矿区的工程地质条件为基础，分析了矿山围岩特性和开采 技术条件，研究了矿体发火机理，提出了有效的灭火方法。根据矿山 现存空区的分布，结合地压的监测资料与地表塌陷情况，分析出危险 区范围，进行采空区稳定性数值模拟与分析。(2)根据细脉带矿体的开采历史背景及铜坑矿三大矿体赋存的特 殊情况，本着快速、高效、灵活的方案选择原则，对细脉带矿体560m 以下空区与细脉带矿体560m以上隔火矿柱与空区的隐患治理提出了 相应方案，并对可行性方案的安全及技术经济效果进行综合分析。(3)开展集束孔大爆破技术的事故隐患治理技术研究，确定了爆 破参数，分析了爆破效应及爆破后存在的问题，建立了爆破效果预测 及块度的数学模型，提出了防止大爆破有害效应的安全技术措施。关键词：细脉带，事故隐患区，束状深孔，强制崩落，爆破效应AB STRACTTongkeng Tin Mine is one of main mines in Huaxi Co．Ltd．With uninterrupted exploitation in the mine，exploitation technology conditions are becoming very complex．Production and deveopment of mine is seriously restricted by loss of nature resources induced by ores spontaneous and a mass of goaf come into being after underground mining activities．In order to make full use of limited nature resources， ensuring security of miners and equipments，protect mine environment,itis necessary to adopt active and effective measures to the fire accidentpotential zone control and round pressure hazard treatment in mined—out areas．Furthermore，it is a precondition for sustainable development of mine in nowadays．In this thesis，the veinlet belt type orebody of Tongkeng Mine is theresearch object．A series of researches were unfolded base on the problems of accident potential zone control in the mine，which are asfollows．(1)On the base of complex engineering problems，surrounding rock characteristic and exploitation technology conditions were analyzed．_Ores spontaneou mechanism was studied，fire prevention and extinguishment Was put forward．According to distribution of mined stopes，combined with geostatic inspection data and surface land collapse，dangerous zones were partitioned．Furthermore，numerical simulation was used to study the stability of goaf．(2)According to mining histroy as well as background of veinle