Research on the Differences of the Pore Characteristics with Different Destroyed-Type Coals
In order to investigate the pore characteristics of the different destroyed-types of coals and its effects of coal and gas outburst,this article studyed the low temperature nitrogen adsorption curve,specific surface area,pore volume and its distribution with the method of low-temperature nitrogen adsorption,also studed their changes with the different destroyed-type of coals,and the influences of pore shape and distribution for coal and gas outburst.The results showed that three different destroyed-types of coals have loops,the pore shapes of the coals mainly open-shaped,maybe also contain the flask-shaped.The raw coal has more open-shaped pores,fragmentated coal contains a large number of micropore,the crushed coal richs micropore and mesopore.The crushed coal in the large aperture of the medium relative pressure range mainly has open-shaped pore,then in mailer pore size range of low relative pressure mainly has closed pore.With the increasing of destroyed-degree,the porosity increased,the anti-destruction capability reduced,the coal is more easily broken,then the risk of outburst is greater.
coal pores destroyed-type coal and gas outburst
Ling ling Qi Zhao feng Wang Hong min Yang
School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China;Key Laboratory of Gas Geology and Gas Control of Henan Province(-)State Key Laboratory Breeding Base with province-ministry co-constuct, Jiaozuo 454003, China
国际会议
辽宁葫芦岛
英文
598-602
2012-08-07（万方平台首次上网日期，不代表论文的发表时间）