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用充填空区法回采隔离矿柱的地质力学特点
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作者 胡爱华 湘沅 《世界采矿快报》 1991年第5期18-20,共3页
杰兹卡兹甘矿床广泛用留隔离矿柱的房柱法开采,此法生产率高而且比较安全。但随着开采深度超过200米,矿柱的矿石损失量显著增加,使用充填法以及某些矿体的二次开采问题日益尖锐。
关键词 矿柱 回采 充填空区 地质力学
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浅谈金属矿山尾砂库治理的发展
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作者 邵猛 张卓 赵健 《矿业工程》 CAS 2019年第1期46-48,共3页
阐述矿山尾砂库占地和污染环境等危害性,提倡新建矿山不设地表尾沙库与选厂制干尾砂直充井下空区的做法与实例。介绍了老矿山生产大发展尾砂库大萎缩的采砂回填井下和改造充填系统实施全尾充填的范例,通过实例研判肯定老矿山尾沙库实施... 阐述矿山尾砂库占地和污染环境等危害性,提倡新建矿山不设地表尾沙库与选厂制干尾砂直充井下空区的做法与实例。介绍了老矿山生产大发展尾砂库大萎缩的采砂回填井下和改造充填系统实施全尾充填的范例,通过实例研判肯定老矿山尾沙库实施治理,退库还林,并给出具有可操作性的实施方法。揭示地方环保治理的短板及生存原因,提出根治环保腐败的关键在于完善相关法律法规和建立健全上下监督,群众监督,新闻媒体参与机制。 展开更多
关键词 废弃尾砂库 退库还林 充填空区 法律法规 监督机制
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Study on gob-side entry retaining technique with roadside packing in longwall top-coal caving technology 被引量:3
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作者 华心祝 《Journal of Coal Science & Engineering(China)》 2004年第1期9-12,共4页
Pointed out some technical difficulties of gob-side entry retaining with roadside packing in longwall top-coal caving technology (LTCT), and analyzed the function mecha-nism of roadside filling body. Theory analysis s... Pointed out some technical difficulties of gob-side entry retaining with roadside packing in longwall top-coal caving technology (LTCT), and analyzed the function mecha-nism of roadside filling body. Theory analysis shows the mechanical properties of high water material fit for the feature of deformation of gob-side entry retaining in LTCT, and gob-side entry retaining in LTCT face is one of effective ways to increase the recovery ra-tio of mining district. 展开更多
关键词 gob-side entry retaining roadside packing longwall top-coal caving support resistance
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Dynamic disaster control of backfill mining under thick magmatic rock in one side goaf:A case study 被引量:5
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作者 XUE Yan-chao XU Tao +2 位作者 WASANTHA P L P YANG Tian-hong FU Teng-fei 《Journal of Central South University》 SCIE EI CAS CSCD 2020年第10期3103-3117,共15页
In order to explore the control effect of backfill mining on dynamic disasters under special geological mining conditions of overlying thick magmatic rock(TMR),a three-dimensional numerical model of a panel of one sid... In order to explore the control effect of backfill mining on dynamic disasters under special geological mining conditions of overlying thick magmatic rock(TMR),a three-dimensional numerical model of a panel of one side goaf in Yangliu coal mine with double-yield backfill material constitutive model was developed.The simulation results were then compared with field monitoring data.The dynamic disaster control effect of both caving and backfill mining was analyzed in three different aspects,i.e.,displacement field,stress field and energy field.The results show that in comparison to the full caving mining method,the bearing capacity of the goaf after backfilling was enhanced,the backfill mining can effectively reduce the stress and energy accumulated in the coal/rock body,and the backfill mining eliminates the further moving space of TMR and prevents its sudden rupture.Before TMR fracture,the subsidence displacement of TMR was reduced by 65.3%,the front abutment stress of panel decreased by 9.4%on average and the high energy concentration zone around panel was also significantly reduced.Overall,the results of this study provide deeper insights into the control of dynamic disasters by backfill mining in mines. 展开更多
关键词 backfill mining thick magmatic rock one side goaf dynamic disaster numerical simulation
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