摘要
为了建立和完善屯兰矿防治煤与瓦斯突出技术体系,确定屯兰矿钻屑解吸指标K1和Δh2的相对敏感性,基于高压定容吸附解吸试验和钻屑解吸指标模拟测定,研究发现屯兰矿各煤层煤样的瓦斯吸附平衡压力与瓦斯解吸量呈幂函数关系,K1和Δh2呈线性关系;屯兰矿各煤层煤样第1 min的瓦斯解吸量比第4—5 min受吸附平衡压力的控制作用更明显;通过现场实测K1和Δh2指标,并结合最小均方差法分析认为屯兰矿各煤层K1比Δh2指标敏感。因此,屯兰矿各煤层进行突出危险性预测时,应选用钻屑解吸指标K1作为主要指标(敏感指标),以Δh2作为辅助指标。
In order to establish and improve the coal and gas outburst prevention technical system of Tunlan Mine,relative sensitivities of drilling cuttings about gas desorption index K1 and Δh2 were determined.Based on high pressure set volume adsorption and desorption ex-periments and simulation measurement of the drilling cuttings desorption index,the study found that the gas adsorption balance pressure and gas desorption volume of each seam sample from Tunlan Mine was in a power function relationship,and K1 andΔh2 was in a liner rela-tionship.The first minute gas desorption volume of each seam sample from Tunlan Mine was more obvious than the fourth and fifth minute by the control function of desorption balance pressure.With the site measured of K1 and Δh2 and combined with the minimum mean vari-ance method analysis,the paper hold that the K1 of each seam in Tunlan Mine was more sensitive thanΔh2 index.Therefore,when predic-ting the outburst danger was conducted for each seam in Tunlan Mine,the drilling cutting desorption index K1 should be selected as the main index( sensitive index)and Δh2 should be selected as an auxiliary index.
出处
《煤炭科学技术》
CAS
北大核心
2014年第10期41-44,116,共5页
Coal Science and Technology
基金
国家科技重大专项资助项目(2011ZX05040-001)
国家重点基础研究发展计划(973计划)资助项目(2011CB201206)
关键词
瓦斯吸附
瓦斯解吸
钻屑解吸指标
敏感性
gas adsorption
gas desorption
desorption index of drilling cuttings
sensitivity
