Barapukuria煤矿强含水厚松散层下协调减损开采技术研究
发布时间：2019-06-18 22:34
【摘要】：孟加拉国Barakupuria煤矿(简称孟巴矿)井田范围内地表覆盖有100余米厚的强含水松散层UDT,覆岩中除了LDT相对隔水层外,基本不存在隔水岩层,为了矿井生产安全,不但开采覆岩导水裂缝带不能波及UDT含水层,而且要保证LDT隔水层的完整隔水性。本文在分析孟巴矿地质采矿条件特殊性的基础上,应用理论分析计算、数值模拟计算分析、现场探测分析等综合方法,对孟巴矿强含水松散层下协调减损开采技术进行了深入研究,给出了适合孟巴矿地质采矿条件的协调减损开采方法。通过对孟巴矿井田地质采矿条件分析,确定了UDT强含水松散层是威胁矿井安全开采的主要含水层,协调开采控制导水裂缝带不破坏LDT隔水性能是孟巴矿水体下采煤的关键技术。其次通过理论分析,解释了协调减损开采的理论含义与减损原理,给出边界协调错距布置,能够分(次)段破坏释放Ⅵ煤顶板砂岩,有效控制开采覆岩导水裂缝带发育高度,减小开采边界变形叠加,降低LDT相对隔水层变形破坏程度,减轻冲击矿压灾害威胁程度。结合地表沉陷观测资料,应用概率积分法确定矿井分层边界协调错距的计算方法。通过数值模拟结果表明,分层协调错距布置对于减小边界与煤柱的应力集中有明显的作用,能够有效减轻冲击矿压灾害强度,可以保证导水裂缝带不波及LDT相对隔水层,保障UDT水体下安全开采。地表沉陷观测数据计算表明,边界错距协调布置,能够有效减轻LDT相对隔水层的变形破坏程度。综合分析确定孟巴矿强含水松散层下协调减损开采技术方案。研究成果为进一步深入研究特厚煤层分层开采覆岩破坏规律奠定了基础,对制定孟加拉国Barakupuria煤矿水体下采煤综合协调减损方案具有一定的参考应用价值。
[Abstract]:The surface of Barakupuria coal mine in Bangladesh is covered with strong water-bearing loose layer UDT, overlying rock with a thickness of more than 100 meters. There are basically no water-insulating strata except LDT relative water insulation layer. For the sake of mine production safety, not only the mining of overlying water diversion fracture zone can not spread to UDT aquifer, but also the complete water insulation of LDT water insulation layer should be guaranteed. In this paper, based on the analysis of the particularity of geological mining conditions in Mengba Mine, the coordinated impairment mining technology under strong water cut loose layer in Mengba Mine is deeply studied by using the comprehensive methods of theoretical analysis and calculation, numerical simulation analysis and field detection analysis, and the coordinated impairment mining method suitable for the geological mining conditions of Mengba Mine is given. Based on the analysis of geological mining conditions in Mengba mine field, it is determined that UDT strong water cut loose layer is the main aquifer threatening mine safe mining. Coordinated mining control of water diversion fracture zone does not destroy LDT water insulation performance is the key technology of coal mining under water body of Mengba Mine. Secondly, through theoretical analysis, the theoretical meaning and principle of coordinated impairment mining are explained, and the coordinated dislocation arrangement of boundary is given, which can destroy and release VI coal roof sandstone in (secondary) section, effectively control the development height of water diversion fracture zone of overlying rock, reduce the superposition of mining boundary deformation, reduce the deformation and failure degree of LDT relative water insulation layer, and reduce the threat degree of rock burst disaster. Based on the observation data of surface subsidence, the probability integration method is used to determine the calculation method of coordinated dislocation distance of mine delamination boundary. The numerical simulation results show that the layered coordinated dislocation arrangement plays an obvious role in reducing the stress concentration of the boundary and coal pillar, can effectively reduce the intensity of rock burst disaster, can ensure that the water diversion fracture zone does not affect the LDT relative water insulation layer, and ensures the safe mining under UDT water body. The calculation of surface subsidence observation data shows that the coordinated arrangement of boundary dislocation can effectively reduce the deformation and failure degree of LDT relative to water insulation layer. The technical scheme of coordinated impairment mining under strong water cut loose layer in Mengba Mine is determined by comprehensive analysis. The research results lay a foundation for further study on the failure law of overlying rock in ultra-thick coal seam layered mining, and have certain reference and application value for formulating the comprehensive coordinated reduction scheme of coal mining under the water body of Barakupuria coal mine in Bangladesh.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TD823
本文编号：2501848
[Abstract]:The surface of Barakupuria coal mine in Bangladesh is covered with strong water-bearing loose layer UDT, overlying rock with a thickness of more than 100 meters. There are basically no water-insulating strata except LDT relative water insulation layer. For the sake of mine production safety, not only the mining of overlying water diversion fracture zone can not spread to UDT aquifer, but also the complete water insulation of LDT water insulation layer should be guaranteed. In this paper, based on the analysis of the particularity of geological mining conditions in Mengba Mine, the coordinated impairment mining technology under strong water cut loose layer in Mengba Mine is deeply studied by using the comprehensive methods of theoretical analysis and calculation, numerical simulation analysis and field detection analysis, and the coordinated impairment mining method suitable for the geological mining conditions of Mengba Mine is given. Based on the analysis of geological mining conditions in Mengba mine field, it is determined that UDT strong water cut loose layer is the main aquifer threatening mine safe mining. Coordinated mining control of water diversion fracture zone does not destroy LDT water insulation performance is the key technology of coal mining under water body of Mengba Mine. Secondly, through theoretical analysis, the theoretical meaning and principle of coordinated impairment mining are explained, and the coordinated dislocation arrangement of boundary is given, which can destroy and release VI coal roof sandstone in (secondary) section, effectively control the development height of water diversion fracture zone of overlying rock, reduce the superposition of mining boundary deformation, reduce the deformation and failure degree of LDT relative water insulation layer, and reduce the threat degree of rock burst disaster. Based on the observation data of surface subsidence, the probability integration method is used to determine the calculation method of coordinated dislocation distance of mine delamination boundary. The numerical simulation results show that the layered coordinated dislocation arrangement plays an obvious role in reducing the stress concentration of the boundary and coal pillar, can effectively reduce the intensity of rock burst disaster, can ensure that the water diversion fracture zone does not affect the LDT relative water insulation layer, and ensures the safe mining under UDT water body. The calculation of surface subsidence observation data shows that the coordinated arrangement of boundary dislocation can effectively reduce the deformation and failure degree of LDT relative to water insulation layer. The technical scheme of coordinated impairment mining under strong water cut loose layer in Mengba Mine is determined by comprehensive analysis. The research results lay a foundation for further study on the failure law of overlying rock in ultra-thick coal seam layered mining, and have certain reference and application value for formulating the comprehensive coordinated reduction scheme of coal mining under the water body of Barakupuria coal mine in Bangladesh.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TD823
【参考文献】
相关期刊论文 前10条
1 余学义;陈辉;赵兵朝;王飞龙;;基于协调开采原理的裂隙带发育高度模拟[J];煤矿安全;2014年09期
2 余学义;王飞龙;赵兵朝;;河流下限高协调开采方案[J];辽宁工程技术大学学报(自然科学版);2014年09期
3 潘锐;孟祥瑞;高召宁;;基于隔水关键层水压计算及突水分析[J];煤炭工程;2014年01期
4 邢立亭;武强;谷亚伟;;干旱地区矿区顶板水力性质变异机理[J];煤炭学报;2013年12期
5 郭文兵;邵强;石显怡;;水库坝体下厚煤层放顶煤协调开采技术[J];煤炭科学技术;2013年09期
6 杜锋;白海波;;薄基岩综放采场直接顶结构力学模型分析[J];煤炭学报;2013年08期
7 郭仓;谭志祥;邓喀中;牛海鹏;;深部宽条带协调开采技术及工程应用[J];煤矿安全;2013年01期
8 杜锋;白海波;;厚松散层薄基岩综放开采覆岩破断机理研究[J];煤炭学报;2012年07期
9 姚邦华;白海波;黄汉富;浦海;;采动覆岩隔水层稳定性力学模型及应用研究[J];采矿与安全工程学报;2012年03期
10 许家林;朱卫兵;王晓振;;基于关键层位置的导水裂隙带高度预计方法[J];煤炭学报;2012年05期
相关会议论文 前1条
1 崔薇;;印度矿业开发现状与投资环境分析[A];中国地质学会2013年学术年会论文摘要汇编——S04黑色金属勘查技术及进展分会场[C];2013年
相关硕士学位论文 前4条
1 陈加飞;水体下采空区覆岩破坏数值模拟研究[D];昆明理工大学;2008年
2 黄雪梅;五沟煤矿开采煤层上覆岩土体综合地质特征及防水煤岩柱留设问题研究[D];安徽理工大学;2007年
3 王兵;大平矿南二采区水体下开采方案研究[D];辽宁工程技术大学;2007年
4 袁景;谢桥煤矿1201（3）工作面覆岩导水裂缝带高度预测[D];辽宁工程技术大学;2005年
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