金属矿垮塌区内注浆加固效果检测与评价  

Inspection and Evaluation of Reinforcement Effect of Collapse Zone by Grouting in a Metal Mine

作　　者：李衡锋 罗周全[1] 张旭阳 谢承煜[1] LI Heng feng;LUO Zhou quan;ZHANG Xu yang;XIE Cheng yu(School of Resources and Safety Engineering,Central South University,Changsha 410083,Hunan,China;Yingkou Electric Power Supply Company,State Grid Corporation,Yingkou115000,Liaoning,China)

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083 [2]国家电网公司营口供电公司,辽宁营口115000

出　　处：《矿冶工程》2019年第5期22-26,共5页Mining and Metallurgical Engineering

基　　金：“十三五”国家重点研发计划课题(2017YFC0602901)

摘　　要：采用取岩芯分析、岩石力学试验和压水试验等方法对凡口铅锌矿主矿体垮塌区注浆工程的加固效果进行了检测,结果表明,注浆后岩体完整性更好,注浆加固增强了矿岩体强度,吕荣值大幅减小。为了更好地评价垮塌区内注浆加固的效果,降低开挖风险,在RMR法的基础上,并结合模糊德尔菲层次分析方法(FD AHP),根据采场实际情况选取评估因素对注浆前后的矿岩和充填体进行分级,由注浆前后矿岩体和充填体的质量改善情况来综合评价注浆效果,评价结果与实验结果一致。The reinforcement effect of the collapse zone in the main ore body of Fankou Lead Zinc Mine after grouting was inspected by using core analysis,rock mechanics test,and water pressure test.The results show that the rock mass after grouting is good in integrity,with strength improved and Lugeon value greatly reduced.In order to further evaluate the effect of grouting reinforcement in the collapse zone and reduce the risk potential brought by excavation,the ore mass and backfill before and after grouting were graded in terms of the selected evaluating factors based on RMR method combined with fuzzy Delphi analytic method(FD AHP).And the improvement of ore mass and backfill before and after grouting was comprehensively evaluated.It is shown that the evaluation result is consistent with the experimental result.

关 键 词：金属矿 垮塌区 加固 注浆 模糊德尔菲层次分析方法 

分 类 号：TD862[矿业工程—金属矿开采]