煤体结构对瓦斯解吸放散特征影响试验研究  

Experimental study on influence of coal structure on gas desorption and emission characteristics

作　　者：张逸斌 齐庆杰[1,2] 张浪 张慧杰[3,4] 王维华 ZHANG Yibin;QI Qingjie;ZHANG Lang;ZHANG Huijie;WANG Weihua(College of Safety Science and Engineering,Liaoning Technical University,Fuxin Liaoning 123000,China;Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education,Fuxin Liaoning 123000,China;Mine Safety Technology Branch,China Coal Research Institute,Beijing 100013,China;State Key Laboratory of Coal Mining and Clean Utilization（China Coal Research Institute）,Beijing 100013,China)

机构地区：[1]辽宁工程技术大学安全科学与工程学院,辽宁阜新123000 [2]矿山热动力灾害与防治教育部重点实验室,辽宁阜新123000 [3]煤炭科学技术研究院有限公司安全分院,北京100013 [4]煤炭资源高效开采与洁净利用国家重点实验室(煤炭科学研究总院),北京100013

出　　处：《中国安全生产科学技术》2018年第6期103-107,共5页Journal of Safety Science and Technology

基　　金：国家重点研发计划项目(2017YFC0804207);国家自然科学基金项目(51274113);国家科技重大专项项目(2016ZX05067004);煤炭科学技术研究院科技发展基金项目(2016JC11)

摘　　要：为研究不同煤体结构煤在瓦斯吸附解吸与放散规律方面的差异性,对寺家庄矿15#煤层煤样进行等温吸附/解吸试验与恒温瓦斯放散试验,研究了构造煤与原生煤的吸附/解吸参数以及在不同吸附压力下的瓦斯放散特征。研究结果表明:构造煤的瓦斯吸附能力稍大于原生结构煤,吸附常数a值较原生煤提高6.3%左右;构造煤与原生煤的瓦斯放散曲线有较大差异,尤其体现于瓦斯放散初期,构造煤瓦斯放散速度更大,就达到极限解吸量所需时间而言,构造煤所需时间更短;瓦斯放散曲线拟合结果表明,孙重旭式与乌斯基诺夫式能够分别准确描述原生煤与构造煤的瓦斯放散过程。In order to study the diversities in gas adsorption,desorption and emission laws of different structural coal,the isothermal adsorption/desorption tests and the constant temperature gas emission tests were conducted on the coal samples collected from No. 15 coal seam of Sijiazhuang mine,and the adsorption/desorption parameters of tectonic coal and primary structural coal as well as the gas emission characteristics under different adsorption pressures were studied. The results showed that the gas adsorption capacity of tectonic coal was slightly greater than that of primary structural coal,and the adsorption constant was 6. 3% higher than that of primary coal. The gas emission curves of tectonic coal and primary structural coal were quite different,especially in the early emission stage when the gas emission rate of tectonic coal was greater. In terms of the time required to reach the maximum desorption capacity,the required time of tectonic coal was shorter. The fitting results of gas emission curves showed that the Sun Chongxu equation and Ustinov equation could accurately describe the gas emission process of primary coal and tectonic coal respectively.

关 键 词：构造煤 原生结构煤 瓦斯吸附 瓦斯解吸 瓦斯放散 

分 类 号：X936[环境科学与工程—安全科学]