Analysis of pressure relief effect of borehole in rock burst mine
Xu Pengbo, Junjie Shao, Dong Fan, Jianghua Chang, Ning Zhang
Abstract
With the increase of mining depth of coal seam, the impact pressure has severely restricted the coal mine safe and efficient mining, drilling pressure is a kind of through the construction of borehole in the coal seam, achieve the purpose of partial discharge, pressure relief effect is very obvious, the larger the aperture effect of pressure, the better, by comparing the 150 mm in diameter and 300 mm diameter CT detection construction surrounding rock displacement change. Compare the pressure relief effect of 150 mm drilling and 300 mm drilling.
Topics & Concepts
BoreholeCoal miningDrillingGeologyMining engineeringDisplacement (psychology)CoalPetroleum engineeringRock burstGeotechnical engineeringMaterials scienceEngineeringMetallurgyPsychotherapistPsychologyWaste managementGeomechanics and Mining EngineeringGeoscience and Mining TechnologyTechnology and Security Systems