第43卷第5期 2016年10月
矿业安全与环保
MINING SAFETY & ENVIRONMENTAL PROTECTION
刘延保.极松软煤体高压吸附过程中变形特性试验研究[J].矿业安全与环保，2016,43(5)：1-4.
文章编号：1008-4495(2016)05-0001-04 试验研究
Vol. 43 No.5 Oct.2016
极松软煤体高压吸附过程中变形特性试验研究
刘延保,2
(1.瓦新灾害监控与应急技术国家重点实验室，重庆400037；2.中煤科工集团重庆研究院有限公司，重庆400037）摘要：突出煤层中大都存在层理紊乱、煤质极其松软的软分层，软分层吸附瓦斯和释放瓦斯的能力比硬分层大许多，突出危险性更大。为分析软分层在高压条件下的吸附变形特性，研制了煤层瓦斯吸附解吸变形动态测试装置，并利用该装置进行了恒温定容条件下煤样吸附、解吸瓦斯过程中吸附量与应变的同步测试。研究结果表明：等温吸附曲线、等温解吸曲线和等温吸附应变曲线均服从朗格缪尔方程，等温解吸应变曲线服从改进的朗格缪尔方程；软分层吸附一解吸过程可逆，吸附一解吸变形不可逆；吸附瓦斯量与体应变呈非线性关系。通过对试验数据的统计分析，建立了软分层煤体应变与吸附瓦斯量之间的精确拟合方程。
关键词：极松软煤体；软分层；吸附瓦斯量；吸附变形；恒温定容
中图分类号：TD713
文献标志码：A
网络出版时间：2016-09-2908：52
网络出版地址：http：//www.cnki.net/kcms/detail/50.1062.TD.20160929.0852.016.html
Test StudyonDeformation Characteristics of Extra-softCoal in
High-pressureAbsorptionProcess
LIU Yanbao'-2
(1. State Key Laboratory of Gas Disaster Monitoring and Emergency Technology, Chongqing 400037, China; 2. China Coal Technology and Engineering Group Chongqing Research Institute, Chongging 400037, China)
Abstract: The bedding of most outburst coal seams is disorder and extremely soft hierarchical layers always exist, the gas absorption and release ability of the soft hierarchical layers is much stronger than that of the hard ones, so the coal and gas outburst hazard is greater. For analyzing the absorption deformation characteristics of the soft hierarchical layers under high
pressure, a dynamic test device for coalseam
s adsorptiondesorption deformation was developed, and with this device, the
synchronous tests were carried out on the adsorption
gas absorption and desorption process of coal samples
results showed that the isothermal adsorption curve, the isothermal
under the constant temperature and volume. The research r
desorption curve and the isothermal adsorption strain
all followed the Langmuire equation, and the isothermal desorption
ndesorption process of the soft hierarchical layers was
strain curve followed the improved Langmuire equation; the adsorption
reversible, but their adsorptiondesorption deformation was irreversible; the adsorbed gas amount was in a nonlinear relation with the volume strain. Through the statistical analysis of test data, a precise fitting equation between coal body strain and
adsorbed gas amount of the soft hierarchical layers was
收稿日期：2016-03-23;2016-06-13修订
基金项目：国家自然科学基金项目（51574280）：国家十三五”科技重大专项（2016ZX05067004-004， 2016ZX05043005-003）；重庆市基础料学与前沿技术研究专项(cstc2015jcyjBX0076)
作者简介：刘延保（1981一），男，山东淄博人，博士，副研究员，主要从事煤层气开发方面的研究工作。E-mail:yanbao_
liu@163.com。万方数据
established.
Keywords: extrasoft coal; soft layer; adsorbed gas amount; adsorptive deformation; constant temperature and volume
近年来，随着煤矿企业对煤岩瓦斯动力灾害发生机制、瓦斯抽采，以及二氧化碳煤层封存等技术
.1.