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[1]郝富昌,抄隆霄,孙丽娟,等.软硬煤瓦斯解吸规律及影响因素的实验研究[J].中国安全生产科学技术,2017,13(3):42-46.[doi:10.11731/j.issn.1673-193x.2017.03.006]
　HAO Fuchang,CHAO Longxiao,SUN Lijuan,et al.Experimental study on gas desorption laws and influence factors of soft and hard coal[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(3):42-46.[doi:10.11731/j.issn.1673-193x.2017.03.006]
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软硬煤瓦斯解吸规律及影响因素的实验研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
13
期数:
2017年3期
页码:
42-46
栏目:
学术论著
出版日期:
2017-03-31

文章信息/Info

Title:
Experimental study on gas desorption laws and influence factors of soft and hard coal
文章编号:
1673-193X(2017)-03-0042-05
作者:
郝富昌1; 2; 抄隆霄1; 2; 孙丽娟1; 2; 刘彦伟1; 2
1.河南理工大学 河南省瓦斯地质与瓦斯治理重点实验室——省部共建国家重点实验室培育基地，河南 焦作 454000；2. 煤炭安全生产河南省协同创新中心，河南 焦作 454000
Author(s):
HAO Fuchang1; 2;  CHAO Longxiao1; 2;  SUN Lijuan1; 2;  LIU Yanwei1; 2
1. State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo Henan 454000, China; 2. Coal Production Safety Collaborative Innovation Center in Henan Province, Jiaozuo Henan 454000, China
关键词:
瓦斯解吸规律; 软硬煤; 影响因素; 孔隙结构; 破坏类型
Keywords:
gas desorption law;  soft and hard coal;  influence factor;  pore structure;  damage type
分类号:
TD713
DOI:
10.11731/j.issn.1673-193x.2017.03.006
文献标志码:
A
摘要:
为了研究软硬煤瓦斯解吸规律，搭建了大质量瓦斯解吸实验系统，进行了不同变质程度软硬煤的瓦斯解吸实验，对比分析了软硬煤的孔隙结构特征，查明了软硬煤的瓦斯解吸规律及影响因素。研究结果表明：软煤相对于硬煤，具有更多的瓦斯解吸总量和更快的解吸速度，采用幂函数可以较好的描述软硬煤的解吸规律，煤的破坏类型和变质程度是影响瓦斯解吸量的主要因素；软硬煤瓦斯解吸规律的差异性主要受煤的孔隙结构影响，软煤总孔容是硬煤的1.18～2.14倍，且软煤中孔及大孔更为发育，这为瓦斯解吸提供了更优质的通道；软煤相对硬煤在同等条件下变质程度更高，煤吸附甲烷的能力更强，这有利于软煤瓦斯解吸量的增加及解吸速度的加快。研究成果为准确测试煤层瓦斯含量和钻屑解吸指标提供了理论依据。
Abstract:
In order to study the gas desorption laws of soft and hard coal, a large mass gas desorption experimental system was developed. The gas desorption experiments of soft and hard coal with different metamorphic degree were carried out, and the gas desorption laws and influence factors of soft and hard coal were found out through comparative analysis on the pore structure characteristics of soft and hard coal. The results showed that the soft coal has larger total gas desorption amount and faster desorption speed compared with hard coal. The power function can be used to describe the desorption laws of soft and hard coal better, and the damage type and metamorphic degree of cola are the main influence factors of gas desorption amount. The difference of gas desorption between soft and hard coal is mainly controlled by the pore structure of coal, the total pore volume of soft coal is 1.18-2.14 times of hard coal, and the middle pore and larger pore of soft coal are more developed, which provide a more excellent channel for gas desorption. Compared with the hard coal under the same conditions, the metamorphic degree of soft coal is higher, and the gas adsorption capacity is stronger, which is beneficial to increase the gas desorption amount and accelerate the desorption speed of soft coal. The results provide the theoretical basis for accurately measuring the gas content in coal seam and the desorption index of drill cuttings.

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备注/Memo

备注/Memo:
国家自然科学基金（51404099，51374095，51604092）
更新日期/Last Update: 2017-03-30