Study on Critical Value of Inspection Index of Gas Pre-drainage Effect in Three-soft Seam in West Henan Coal Field
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摘要: 为了确定豫西三软不稳定突出煤层瓦斯区域预抽效果检验指标(p、W)的临界值，通过建立实验室实验系统，构建钻屑瓦斯解吸指标Δh2与瓦斯压力p的对应关系，并基于此对应关系及豫西煤层瓦斯突出及瓦斯动力现象显现区域瓦斯压力p及瓦斯含量W的实测结果，综合确定出煤层瓦斯区域预抽效果检验指标p、W的临界值分别为0．4 MPa、5．0 m3/t，并经过了实际采掘验证。这一临界值与现有的一些规定不尽相同，其研究方法及结果可供具有同类煤层的煤矿借鉴。Abstract: In order to determine the critical value of the inspection index(gas pressure p and gas content W)of regional gas pre－drainage effect in three－soft unstable outburst coal seams in west Henan coal filed，the corresponding relationship between gas desorption index Δh2and gas pressure p was constructed by establishing a laboratory experiment system，based on this relationship and the gas pressure p and gas content W which were measured in the region of gas outburst and gas dynamic phenomena occurrence，it was comprehensively deternimed that the critical value of the inspection index p and W of regional gas pre－drainage effect was respectively 0．4 MPa and 5．0 m3/t，which were then verified by the actual mining．These critical values are different from some existing regulations，and the research method and results can be used for reference to similar coal seams．
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[1] 王之贵.荥巩煤田三软突出煤层消突临界值研究[J].中州煤炭,2015(12):19-22. [2] 周金龙,董洪凯,李国强.顺层定向长钻孔预抽煤层瓦斯区域防突措施效果检验方法研究[J].矿业安全与环保,2013,40(6):69-72. [3] 王伟华.豫西二1煤层瓦斯含量测定方法及区域预测的瓦斯含量指标临界值研究[D].焦作:河南理工大学,2011. [4] 赵旭生,董银生,岳超平.煤与瓦斯突出预测敏感指标及其临界值的确定方法[J].矿业安全与环保,2007,34(3):28-30. [5] 卿启超,李秋林,吕贵春,等.水力化措施条件下工作面突出预测指标K1临界值修正研究[J].矿业安全与环保,2015,42(4):56-58. [6] 李文哲.残存瓦斯含量的区域效检指标临界值确定方法研究[D].包头:内蒙古科技大学,2015. [7] 张玉明.乌兰煤矿7#煤层突出危险性敏感指标及临界值确定[J].矿业安全与环保,2015,42(3):74-77. [8] 王松.寺河矿区域预抽煤层瓦斯防突效果评价方法及临界值的研究[D].焦作:河南理工大学,2011. [9] 侯少杰,程远平,吴祥,等.预抽煤层瓦斯区域性防突措施效果检验方法[J].煤炭技术,2010,29(4):87-90. [10] 杨宏民,王兆丰,王松,等.预抽煤层瓦斯区域防突效果检验指标临界值研究[J].中国安全科学学报,2011,21(5):116-120. [11] 孟中泽,潘少杰,郝富昌,等.李沟矿煤与瓦斯突出区域预测指标及临界值的确定[J].煤矿安全,2010,41(4):22-24. [12] 魏建平,赵发军,刘明举,等.义安矿煤与瓦斯突出区域预测指标及临界值研究[J].煤炭科学技术,2008,36(2):39-41. [13] 郭寿松.大宁矿突出主控因素及区域措施效检指标临界值确定[J].煤矿安全,2014,45(7):5-8. [14] 张子敏,张玉贵.大平煤矿特大型煤与瓦斯突出瓦斯地质分析[J].煤炭学报,2005,30(2):137-140. [15] 突出煤层煤巷掘进工作面突出敏感指标及其临界值研究[R].焦作:河南理工大学,2006.
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