Vol. 44 No. 1 Feb.2017
矿业安全与环保
MINING SAFETY & ENVIRONMENTAL PROTECTION
第44卷第1期 2017年2月
程液，马代辉，高月.煤的灰分、挥发分与孔除率的关联及其对瓦斯放散初速度的影响[J].矿业安全与环保，2017,44(1)：12-17. 文章编号：10084495(2017)010012-06
煤的灰分、挥发分与孔隙率的关联及其
对瓦斯放散初速度的影响
程波1,2，马代辉1.2，高月2
（1.瓦斯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：为了分析煤的灰分、挥发分与孔隙率的关联，以及煤的孔隙特征、坚固性系数等对瓦斯放散初速度的影响，在我国8个典型矿区累计采集了84个煤样，开展了相应的实验测试。通过对实验数据的数值分析发现：大部分矿区煤的灰分、挥发分与孔隙率之间的拟合函数服从二元线性函数，仅晋城矿区煤样的拟合函数为曲面函数；各矿区煤样孔隙率、坚固性系数与瓦斯放散初速度之间的数学关系明显，具体可分为3种类型。在煤的灰分、挥发分与孔隙率之间关联的基础上，考虑煤的坚固性系数的影响，得到的各拟合函数精度更高，其计算值与实测值的变化趋势基本一致，可为煤与瓦斯突出孕灾特征的分析提供一定的参考，同时对于研究煤与瓦斯突出预测的新指标具有重要的现实意义。
关键词：煤与瓦斯突出；灰分；挥发分；孔隙率；吸附；瓦斯放散初速度
中图分类号：TD713
文献标志码：A
网络出版时间：2017-02-0710：06
网络出版地址：http：//www.cnki.net/kcms/detail/50.1062.TD.20170207.1006.018.html
CorrelationofAshContent,VolatileMatterandPorosityofCoaland
TheirImpact onInitial Speedof MethaneDiffusion
CHENG Bo'-2,MA Daihui'.2, GAO Yue?
(I. State Key Laboratory of Gas Disaster Monitoring and Emergency Technology, Chongqing 400037, China; 2. China Coal Technology and Engineering Group Chongqing Research Institute, Chongqing 400037, China)
Abstract: In order to analyze the correlation of ash content, wolatile mater and porosity of coal and theeffect of the pore characteristics and coal hardness coefficient on the initial speed of methane diffusion, 84 coal samples were taken from 8 typical mining areas in our country, and the corresponding tests were carried out. It was found from the numerical analysis of the experimental data that the ftting function of the ash content, volatile matter and the porosity of coal samples in most mining areas obeyed the binary linear function, and only the ftting function of the coal sample in Jincheng Mining Area was a curved surface function; the mathematical relationship between the porosity, hardness coefficient and initial speed of methane diffusion of coal samples in every mining area was obvious, it can concretely divided into three kinds. Based on the corelation between the ash content, volatile content and porosity of coal samples and by taking the impact of the hardness coefficient of coal into consideration, the more accurate fitting function was obtained, the change tendency of the calculated value and the measured value was basically the same, which can provide some reference for analyzing the characteristics of coal and gas outburst disasters, in addition, it has important practical significance for studying the new index of coal and gas outburst prediction.
Keywords: coal and gas outburst; ash content; volatile matter; porosity; adsorption; initial speed of methane diffusion
煤矿瓦斯（又称煤层气）是矿井安全生产的主要收稿日期：2016-08-06;2016-11-30修订
基金项目：国家自然科学基金面上项目（51574280)
作著简介：程液(1985一)，男，四川兼州人，硕士，工程师，主要从事煤矿区煤层气开发及瓦斯灾害治理的研究工作。Email:14169954@qq.com。
· 12 · 万方数据
威胁，但由于其主要成分为甲烷，因此又是一种高效清洁能源。在煤层气勘探开发中，煤层储气性能的评价对于储量计算、钻井产能预测至关重要，传统的煤层储气性能评价主要依靠煤的孔隙率和渗透率的直接测定。因此，研究煤的灰分、挥发分与孔隙率的关联，有助于提高煤层储气性能评价的可靠性。同