Pressure-relief and permeability-increase technology of high liquid–solid coupling blast and its application  

作　　者：Hao Zhiyong Zhou Chao Lin Baiquan Pang Yuan Li Ziwen 

机构地区：[1]State Key Laboratory of Coal Resources and Safe Mining,China University of Mining & Technology

出　　处：《International Journal of Mining Science and Technology》2014年第1期45-49,共5页矿业科学技术学报（英文版）

基　　金：provided by the National Eleventh Five-Year scientific and Technological Support Plan Subject of China (No.2007BAK29B01);the National Natural Science Foundation (No.50534090);the National Key Basic Research Development Program of China (No.2011CB201205);State Key Laboratory of Coal Resources and Mine Safety of China University of Mining Technology of China (No.SKLCRSM08X03);the Youth Science and Technology Fund of China University of Mining and Technology (No.JGY101605)

摘　　要：As for the coal seam with high stress,high gas and low permeability,a single technology cannot prevent the complex dynamic disasters.Because of this,the study proposes a new method of pressure-relief and permeability-increase technology of the high liquid–solid coupling blast.Through coal seam injection and charging structure change,the paper fully works out the dual functions of the water and explosion.Using the theoretical calculation,numerical simulation and physical experiments,we obtained that the initial blasting stress,displacement and overpressure of the liquid–solid coupling blast are much better than that of ordinary blasting.The technology has been used in the relative coal mine,and the application results show that the technique has effectively prevented the coal and gas outburst,which has a wide range of application.As for the coal seam with high stress, high gas and low permeability, a single technology cannot prevent the complex dynamic disasters. Because of this, the study proposes a new method of pressure-relief and permeability-increase technology of the high liquid-solid coupling blast. Through coal seam injection and charging structure change, the paper fully works out the dual functions of the water and explosion. Using the theoretical calculation, numerical simulation and physical experiments, we obtained that the initial blasting stress, displacement and overpressure of the liquid-solid coupling blast are much better than that of ordinary blasting. The technology has been used in the relative coal mine, and the application results show that the technique has effectively prevented the coal and gas outburst, which has a wide range of application.

关 键 词：High stress High gasLow permeability coal seamLiquid-solid coupling blast 

分 类 号：TD712[矿业工程—矿井通风与安全]