软、硬煤层残余瓦斯含量区域效果检验临界值研究

发布时间：2018-04-28 08:13

本文选题：软、硬煤层 + 吸附　；参考：《中国安全生产科学技术》2015年08期

【摘要】：针对软、硬煤层瓦斯含量区域突出危险性效检指标临界值存在较大差异这一工程实际。建立软、硬煤样相关参数关系模型,对基于残余瓦斯含量的区域防突措施效果检验指标临界值进行研究。结果表明:同一煤质软煤和硬煤瓦斯吸附量差别不大,但随着煤的变质程度降低,软、硬煤瓦斯吸附量差值先减小后增大。对存在软、硬分层的煤层,建议采用0.74MPa时软、硬煤瓦斯含量测值的小值(取整)作为煤层残余瓦斯量指标的临界值。此研究因地制宜地确定符合矿井实际的突出预测指标临界值和区域措施效果检验指标临界值,对降低防突成本具有重要意义。
[Abstract]:In view of the engineering practice, there are great differences in the critical values of outburst risk indexes in the area of gas content in soft and hard coal seams. The relationship model of soft and hard coal samples was established and the critical value of regional outburst prevention measures based on residual gas content was studied. The results show that there is no significant difference in gas adsorption between soft coal and hard coal, but with the decrease of coal metamorphism, the difference of gas adsorption between hard coal and soft coal decreases first and then increases. For the coal seams with soft and hard stratification, it is suggested that the small value (rounding) of the measured value of the gas content of hard coal should be used as the critical value of the index of the residual gas quantity of the coal seam when 0.74MPa is used. It is of great significance to determine the critical value of outburst prediction index in accordance with the actual mine and the critical value of the regional measure effect test index according to the local conditions, which is of great significance to reduce the outburst prevention cost.
【作者单位】：河南理工大学安全科学与工程学院;河南理工大学土木工程学院;山西凯嘉能源集团义棠煤业有限责任公司;
【基金】：国家自然科学基金项目(51274090) 河南省科技攻关计划项目(142102310268) 中国博士后科学基金项目(2013M531673)
【分类号】：TD713

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