煤田地质与勘探2017，Vol.45Issue(6)：22-27,6.DOI:10.3969/j.issn.1001-1986.2017.06.004
碎软突出煤层空气动力造穴工程主控因素
Main controlling factors of air-cavitation engineering in broken soft outburst-prone coal seams
摘要
Abstract
In order to research the master engineering affecting factors and affecting mechanism of air-cavitation technology,increase its application in gas governance of the broken soft outburst-prone coal seams,this paper analyzed the mechanism of air-cavitation and believed that the master affecting factors were gas injection pressure and gas injection displacement.This paper adopted numerical simulation,field experiments and formula derivation so as to research the affecting mechanism of gas injection pressure and gas injection displacement.Results suggested that the closer to the well wall,the larger the gas pressure in the coal seam,the more easily the body structure of the coal was destroyed.The effective conduction radius of gas injection pressure was 7 meters in the broken soft coal seam in this experimental area.The cave radius of one-time expansion in coal seam was about 0.1 meter.The taken out volume of coal body was positively correlated with the gas injection pressure in certain range and well positively correlated with the gas injection displacement.关键词
注气压力/返排气体排量/洞穴半径/掏出煤体体积Key words
gas injection pressure/gas injection displacement/cave radius/the taken out volume of coal body分类
矿业与冶金引用本文复制引用
赵龙..碎软突出煤层空气动力造穴工程主控因素[J].煤田地质与勘探,2017,45(6):22-27,6.基金项目
国家科技重大专项课题(2011ZX05040-003) （2011ZX05040-003）
陕西省工业科技攻关项目(2016GY-182) （2016GY-182）
中煤科工集团西安研究院有限公司创新基金项目(2015XAYZD18)National Science and Technology Major Project(2011ZX05040-003) （2015XAYZD18）
Industrial Science and Technology Research Project in Shaanxi Province,China(2016GY-182) （2016GY-182）
Science and Technology Innovation Fund of Xi'an Research Institute of CCTEG(2015XAYZD18) （2015XAYZD18）
