| 梁冰*,石迎爽,孙维吉,于洪雯.考虑压力作用的煤吸附/解吸CH4变形试验研究[J].实验力学,2014,29(2):215~222 |
| 考虑压力作用的煤吸附/解吸CH4变形试验研究 |
| Experimental Study of Coal Deformation Produced by CH4 Adsorption/Desorption Taking into Account Pressure Influence |
| 投稿时间：2013-05-30 修订日期：2013-09-18 |
| DOI：10.7520/1001-4888-13-088 |
| 中文关键词: 等梯度逐次升压/降压 一次升压/降压 膨胀变形 收缩变形 残余变形 |
| 英文关键词:constant gradient successive boost/buck direct boost/buck expansion deformation shrinkage deformation residual deformation |
| 基金项目:国家重点基础研究发展计划资助项目(973)(2011CB201206)；国家自然科学基金项目(51304111)；国家科技重大专项(2011ZX05040005)；辽宁省教育厅一般项目(L2013136) |
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| 中文摘要: |
| 气体压力是煤吸附/解吸瓦斯的重要影响因素之一。因此，在实验室通过改变压力差，进行了一次升压/降压和等梯度逐次升压/降压方式吸附/解吸试验。通过比较分析了两种吸附/解吸方式煤变形量大小，研究了两种吸附/解吸方式下煤残余变形量的变化规律。研究结果表明，等梯度逐次升压吸附煤膨胀变形量大于同一压力水一次升压吸附煤膨胀变形量，而两种解吸试验中煤收缩变形量大小关系与之相反，残余变形量大小关系与之相同；同一压力水平下，变压力梯度降压解吸好于等梯度逐次降压解吸。 |
| 英文摘要: |
| CH4 pressure is one of the important factors of gas adsorption/desorption. In order to study its influence, based on change pressure difference, CH4 adsorption/desorption experiments was carried out in laboratory by both means of direct boost/buck and constant gradient successive boost/buck, respectively. Comparing the deformation size of coal subjected to above both means of adsorption/desorption, the coal residual deformation pattern was studied. Results show that under the same pressure, the expansion deformation due to constant gradient successive boost/buck is bigger than that of direct Boost/buck; while the shrinkage deformation in both means of boost/buck presents opposite relation. The residual deformation due to constant gradient successive boost/buck is bigger than that of direct Boost/buck. Under the same pressure, desorption through variable gradient buck is better than that through constant gradient successive buck. |
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