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
发布时间：2018-09-05 20:00
【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。
[Abstract]:In order to analyze the relationship between coal ash, volatile matter and porosity, as well as the influence of coal porosity characteristics and solidity coefficient on the initial velocity of gas release, 84 coal samples were collected in 8 typical mining areas in China, and the corresponding experimental tests were carried out. Through the numerical analysis of the experimental data, it is found that the fitting function between ash, volatile matter and porosity of coal in most mining areas is from binary linear function, only the fitting function of coal sample in Jincheng mining area is a curved surface function, the porosity of coal sample in each mining area, and the porosity of coal sample in each mining area, The mathematical relationship between the coefficient of solidity and the initial velocity of gas release is obvious, which can be divided into three types. On the basis of the correlation between ash, volatilization and porosity of coal, considering the influence of the coefficient of stability of coal, the precision of each fitting function is higher, and the calculated value is basically consistent with the change trend of measured value. It can provide a certain reference for the analysis of the disaster characteristics of coal and gas outburst, and has important practical significance for the study of new indexes of coal and gas outburst prediction.
【作者单位】： 瓦斯灾害监控与应急技术国家重点实验室;中煤科工集团重庆研究院有限公司;
【基金】：国家自然科学基金面上项目(51574280)
【分类号】：TD712
[Abstract]:In order to analyze the relationship between coal ash, volatile matter and porosity, as well as the influence of coal porosity characteristics and solidity coefficient on the initial velocity of gas release, 84 coal samples were collected in 8 typical mining areas in China, and the corresponding experimental tests were carried out. Through the numerical analysis of the experimental data, it is found that the fitting function between ash, volatile matter and porosity of coal in most mining areas is from binary linear function, only the fitting function of coal sample in Jincheng mining area is a curved surface function, the porosity of coal sample in each mining area, and the porosity of coal sample in each mining area, The mathematical relationship between the coefficient of solidity and the initial velocity of gas release is obvious, which can be divided into three types. On the basis of the correlation between ash, volatilization and porosity of coal, considering the influence of the coefficient of stability of coal, the precision of each fitting function is higher, and the calculated value is basically consistent with the change trend of measured value. It can provide a certain reference for the analysis of the disaster characteristics of coal and gas outburst, and has important practical significance for the study of new indexes of coal and gas outburst prediction.
【作者单位】： 瓦斯灾害监控与应急技术国家重点实验室;中煤科工集团重庆研究院有限公司;
【基金】：国家自然科学基金面上项目(51574280)
【分类号】：TD712
【相似文献】
相关期刊论文 前10条
1 徐乐华;蒋承林;;煤的挥发分与瓦斯放散初速度的关系研究[J];煤矿安全;2011年07期
2 陈向军;程远平;王林;;水分对不同煤阶煤瓦斯放散初速度的影响[J];煤炭科学技术;2012年12期
3 李一波;郑万成;王凤双;;煤样粒径对煤吸附常数及瓦斯放散初速度的影响[J];煤矿安全;2013年01期
4 潘红宇;李树刚;李志梁;林海飞;赵鹏翔;成连华;;瓦斯放散初速度影响因素实验研究[J];煤矿安全;2013年06期
5 宋磊;;新强煤矿瓦斯放散初速度影响因素实验研究[J];黑龙江科学;2014年02期
6 曹W毩，
本文编号：2225317
本文链接：https://www.wllwen.com/kejilunwen/anquangongcheng/2225317.html
