海底下框架式分层充填法开采中矿岩稳定性分析  

Ore-rock stability of frame stope hierarchical level filling mining method in seabed mining

作　　者：彭康[1] 李夕兵[1] 彭述权[1] 刘志祥[1] 赵国彦[1] 

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2011年第11期3452-3458,共7页Journal of Central South University:Science and Technology

基　　金：国家重点基础研究计划("973"计划)(2010CB732004);中国博士后基金资助项目(20090461022);国家自然科学基金资助项目(51074177)

摘　　要：从矿山开采技术条件出发,采用盘区框架式机械化上向水平分层充填法开采,矿区海下第四系与基岩接触部位有一层分布连续且遍布整个矿区的第四系底部隔水带隔断海水的渗流,若开采后沉降不均匀将破坏隔水带从而导致突水事故。根据矿区开拓方式选择矿体左翼到右翼、矿体中央到两翼、隔2采1、矿体两翼到中央4种开采顺序,分析不同开采顺序极限开采后的安全系数及矿区沉降规律,通过现场工程实践及位移监测验证该开采顺序的合理性。结果表明:隔2采1开采顺序为最佳开采顺序。In terms of the technical conditions,it adopts frame stope mechanical upward horizontal slicing and filling intensify mining.There is an impermeable bottom of the fourth line with cut off water seepage in the fourth line and bedrock contact area,continuous and distributed throughout the mine.If there is uniform settlement after mining,it would destroy the water impermeable belt and result in sudden accidents.According to the ways,four kinds of ore mining sequence were choose： from the left ore body to the right,from the central ore body to the wings,the two stope panels and from the wings ore body to the central,the mine safety factor and law settlement of different mining sequence were analyzed.It can be drawn that the two stope panels are the best order.The rationality of mining sequence was validated by result of engineering practice and multi-point displacement measurement.

关 键 词：海底下开采 开采顺序 安全系数 矿区位移 

分 类 号：TD853.34[矿业工程—金属矿开采]