采区瓦斯危险性煤层的四维瓦斯地质研究

IF 0.7 Q4 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Journal of Sustainable Mining Pub Date : 2022-06-19 DOI:10.46873/2300-3960.1353
H. Cui, Xin-Yue He, Zehua Wang
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引用次数: 0

摘要

根据中国矿山行业的规定,开采具有瓦斯危害潜力的煤层必须提前开展瓦斯危害防治工程,瓦斯地质研究应作为瓦斯危害防治工程优化设计和有效施工的基础工作。对具有瓦斯危险性煤层的研究表明,异常地质区域也可能是瓦斯危险性区域,其构造应力场和开采应力场叠加往往导致构造扰动煤和压力瓦斯。采用四维瓦斯地质研究方法,发现异常地质区,评价其瓦斯危险性。该方法涵盖了天然气地质研究的两个范畴:精细地质调查和四维分析。前者包括利用抽气工程对隐伏小地质异常(如小断层、小褶皱、煤层厚度变化等)进行综合勘查;后者包括基于采煤工作面外小型地质构造附加应力场数值模拟分析的空时瓦斯危险性动态预测。其研究对煤与瓦斯突出潜力较大的采空区瓦斯危害防治措施的优化设计和有效实施具有指导意义。
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4D gas geological research on coal seam with gas hazard potential in mining panel
According to regulations of the mining industry in China, it is necessary to carry out gas hazard prevention projects in advance when mining coal seams with gas hazard potential, and gas geological research should be taken as the basic work for optimal design and effective construction of gas hazard prevention projects. Research on coal seam with gas hazard potential have shown that anomalous geological area could be the gas hazard potential area as well, where superimposed tectonic and mining stress field usually results in tectonically disturbed coal and pressured gas. A 4D gas geological research method is used to find out the anomalous geological area and assess its gas hazard potential. The method covers two ranges of gas geological research: fine geological survey and 4D analysis. The former includes a comprehensive prospect of concealed small geological anomalies (such as small fault, small fold and coal thickness variation) by use of gas extraction projects; The latter includes a dynamic forecast of gas hazard potential from space-time perspective based on numerical simulation analysis on additional stress fields around small geological structures beyond coal mining face. Its research benefit the optimal design and effective implementation of gas hazard prevention measures in coal mining panel with high coal and gas outburst potential.
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来源期刊
Journal of Sustainable Mining
Journal of Sustainable Mining Earth and Planetary Sciences-Geology
CiteScore
1.50
自引率
10.00%
发文量
20
审稿时长
16 weeks
期刊最新文献
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