西顿巴斯地区覆煤地层驱替对局部瓦斯抽放参数影响机理的研究进展

V. Bondarenko, I. Salieiev, I. Kovalevska, H. Symanovych, M. Shyshov, O. Malova
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摘要

目的。研究目的是研究弱变质岩条件下采场作业区长壁工作面后瓦斯抽采井位置参数受地质力学技术因素影响的机理。研究方法。采用了一种综合方法,包括分析现有的关于采掘地点矿山工作中的气体释放模式和当地瓦斯抽放参数的研究,分析地质力学过程,制定有限元法建模方案,证实对采掘工作中岩石压力表现进行实验研究的方法方法,考虑到回采工作面推进速度对回采工作面影响存在的趋势。研究的结果。通过对最佳抽采部位瓦斯抽放参数的研究,对弱岩层状体织构转变机理有了新的认识。结合采掘工作面后主顶板各层的变形发展方案,以及采掘工作面沿区和跨区覆煤岩层的位移和抽气井的位置,建立了主顶板各层的变形发展方案。在此基础上,对抽气井的合理选址提出了建议。科学的新奇。以空间形式研究了采场作业区弱变质岩位移过程的主要特征,并在相关方案中阐述了地质力学技术因素对长壁工作面后排气井适宜位置参数的影响机理。实用价值。在考虑回采工作面推进速度的情况下,对顿巴斯西部弱变质岩条件下长壁工作面后瓦斯抽采井定位参数的可靠性进行了分析。总结了基于覆煤岩层岩层位移趋势得出的结论,并提出了识别采场作业区附近岩体变形机理的方案。
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Development of ideas about the mechanism of coal-overlaying formation displacement in terms of its influence on local gas-drainage parameters in the Western Donbas conditions
Purpose. The research purpose is to study the mechanism of the influence of geomechanical-technological factors on the location parameters of the gas-drainage wells behind the longwall face in the area of stope operations under the conditions of weakly metamorphosed rocks. Research methodology. An integrated approach is used, including an analysis of existing research on the gas release patterns in the mine workings of extraction sites and local gas-drainage parameters, analysis of geomechanical processes, development of schemes for modeling by the finite element method, substantiation of methodological approaches for conducting experimental research into the rock pressure manifestations in extraction working, taking into account existing tendencies of the influence of stoping face advance velocity. Research results. The views on the mechanism of the stratified mass texture transformations of weak rocks have been developed during the study of the optimal extraction site gas-drainage parameters. The deformation development schemes have been constructed for any layer of the main roof behind the area of longwall face conjugation with the extraction working, displacement of coal-overlaying formation rocks along and across the extraction site with the location of gas-drainage wells. Based on the conducted research, recommendations on the rational location of gas-drainage wells have been obtained. Scientific novelty. The main characteristics of the weakly metamorphosed rock displacement process in the area of stope operations are studied in a spatial formulation, and the mechanism of the influence of geomechanical-technological factors on the expedient location parameters of gas-drainage wells behind the longwall face is represented on the relevant schemes. Practical value. The reliability of the proposed location parameters for gas-drainage wells behind the longwall face in the conditions of weakly metamorphosed rocks of the Western Donbas has been analyzed, taking into account the stoping face advance increased velocities.The conclusions drawn on the basis of rock displacement tendencies in the coal-overlaying formation are summarized in the schemes for identifying the mechanism of rock mass deformation near the area of stope operations.
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