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我国煤矿矿震发生机理及治理现状与难题 被引量:24
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作者 曹安业 窦林名 +4 位作者 白贤栖 刘耀琪 杨科 李家卓 王常彬 《煤炭学报》 EI CAS CSCD 北大核心 2023年第5期1894-1918,共25页
随着我国煤矿开采深度和开采强度不断增加,煤矿矿震以前所未有的频度和强度展现出来,引起政府部门和社会民众的广泛关注。在政府倡导及科研人员积极探索下,我国在矿震致灾机理研究与工程治理实践方面取得了一系列重要进展,在正确认识矿... 随着我国煤矿开采深度和开采强度不断增加,煤矿矿震以前所未有的频度和强度展现出来,引起政府部门和社会民众的广泛关注。在政府倡导及科研人员积极探索下,我国在矿震致灾机理研究与工程治理实践方面取得了一系列重要进展,在正确认识矿震现象与矿震灾害防控方面取得了长足进步。总结了矿震发生现状,基于我国煤矿矿震研究成果,系统阐述了矿震发生机理、破坏效应、防治技术等方面研究进展与主要难题。结论如下:矿震发生条件复杂,诸多学者从不同角度给出了矿震的定义与分类,总结前人研究后笔者从狭义和广义方面提出了矿震定义,根据矿震发生后的现象及发生机理对矿震进行了分类;矿震致灾现象普遍存在于矿山开采活动中,世界主要采矿国家均有记录,矿震灾害的专业预防与治理已刻不容缓;我国矿震的专业治理起步较晚,但近年来国家部委、省市以及地方管理机关陆续颁布关于矿震防范的规章制度,有力提升了我国矿震灾害治理和应急处置能力;总结了我国煤矿矿震宏观触发机制包括煤柱失稳诱发矿震、顶板破断运动诱发矿震以及断层错动滑移诱发矿震,矿震微观破裂机制包括震源张拉破裂、震源内爆破裂以及震源剪切破裂;从矿震震源参量、震动波传播衰减规律以及震动波扰动情况等方面探讨了矿震的致灾效应,归纳了矿震对井上下的扰动致灾评估方法;以源头防控为宗旨,以精准预防为方针,概括了我国煤矿矿震治理现状与难题。当前,我国煤矿矿震依然存在“震源找不准、灾害控不住”等难题,亟待深入研究矿震孕育发生机理、破坏效应及防控技术方法,以保障煤炭绿色安全高效开采,支撑国家深部资源开发和能源安全战略。 展开更多
关键词 煤矿矿震 发生机理 破坏效应 源破裂机制 治理技术
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Optimization of Slope Angle and Its Seismic Stability: A Case Study for the Proposed Open Pit Coalmine in Phulbari,NW Bangladesh 被引量:1
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作者 Md.Rafiqul ISLAM Mohammed Omar FARUQUE 《Journal of Mountain Science》 SCIE CSCD 2013年第6期976-986,共11页
The present study reflects upon the results of substantial program of two-dimensional Finite Element Method (FEM) numerical analyses of the open pit that links to slope angle optimization associated with the safety ... The present study reflects upon the results of substantial program of two-dimensional Finite Element Method (FEM) numerical analyses of the open pit that links to slope angle optimization associated with the safety factor of the pit slope of a coal mine in Bangladesh. In the present analyses, two types of models have been presented. The first model estimates safety factor without seismic effect on the overall pit slope of the model; the second model incorporates safety factor with seismic stability of the model. The calculated optimum slope angle of the first model is 31% with a rational safety factor of 1.51, prior to the seismic effect. However, the value is reduced to 0.93, 0.82, and 0.72, after we applies the seismic effect in the second model with M6, M6.5, and M7, respectively. Finally, our modeling results emphasize that for the case of the proposed Phulbari coalmine, there is extremely high prospect for causing massive slope failure along the optimum pit slope angle with 31% if the mine area felt seismic shaking, like the Sikkim (in northern India) earthquake with M6.9 on September 18, 2011. 展开更多
关键词 Open pit coalmine Optimum slope angle Safety factor Seismic stability
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Study on mine earthquake activity rules for Laohutai coal mine in Fushun of Liaoning 被引量:2
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作者 HAN Xiaomin CHEN Li SUN Wenda 《Global Geology》 2011年第2期102-105,共4页
According to earthquake data of Fushun earthquake administration,the seismic analysis and statistical methods are utilized in order to analyze earthquake frequency,"b"-value timing and energy creep trends in... According to earthquake data of Fushun earthquake administration,the seismic analysis and statistical methods are utilized in order to analyze earthquake frequency,"b"-value timing and energy creep trends in Laohutai coal mine. By using least squares linear regression method,the relational expression between frequency and magnitude of mine earthquake in Laohutai coal mine is given. And the possible largest magnitude mine earthquake inferred has also been calculated. And this paper also provides a theoretical basis for further study of mine earthquake activity. 展开更多
关键词 mine earthquake earthquake frequency energy creep curve "b"-value method magnitude prediction
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3D HIGH RESOLUTION SEISMIC PROSPECTING IN COAL MINING AREAS
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作者 崔若飞 《Journal of Coal Science & Engineering(China)》 1999年第2期29-32,共4页
The production capacity and efficiency for mechanized coal faces of large-scale mines depend on the detecting degree of mining structures. It is a major task for geological exploration in coal fields to detect minor s... The production capacity and efficiency for mechanized coal faces of large-scale mines depend on the detecting degree of mining structures. It is a major task for geological exploration in coal fields to detect minor structures in district. 3D high resolution seismic prospecting is a effective measure for solving this problem. 展开更多
关键词 3D seismic prospecting high resolution mining structure FAULT
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