某矿山东区复杂条件下放顶方案研究  

Study on caving scheme under complex conditions in eastern part of a mine

作　　者：田栋[1] 秦建军[1] 宋千强 万浩 王胜[1] TIAN Dong;QIN Jian-jun;et al(College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan Hubei 430081,China)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081

出　　处：《化工矿物与加工》2017年第11期34-37,共4页Industrial Minerals & Processing

基　　金：湖北省自然科学基金资助项目(2014CFB814)

摘　　要：为确保某矿山东区-340m阶段采矿工作的顺利进行,需确定合理的放顶方案。首先根据围岩的RQD值、RMR值以及节理裂隙情况分析矿体上盘围岩的可崩性,然后利用需要形成的覆盖层厚度以及地表构筑物对不同分段放顶工作的影响进行分析,确定了各分段的放顶区域,放顶方式采用强制爆破放顶,-270m分段为主放顶层,-284m和-298m分段为补充放顶层。In order to ensure the smooth progress of -340 m mining in a coal mine,it is necessary to determine a reasonable ca- ving scheme. The cavability of hanging wall rock of ore body is analyzed in accordance with RQD value of surrounding rock, RMR value and conditions of joint fissure and the impacts of thickness of cover layer needed to be formed and surface struc- tures on top caving work at different levels are analyzed to deter- mine the top caving area of each level. The forced blasting caving method is used with level -270 m as major caving layer and level -284 m and -298 m as supplementary caving layer.

关 键 词：覆盖层 岩体质量指标 放顶 稳定性 

分 类 号：TD853.3[矿业工程—金属矿开采]