CAJ | 학술논문

曲江矿井属于南方典型的深部矿井，开采水平在-850 m ，地压大，同时受到采动影响，巷道变形大，变形周期快，给生产和安全带来了很大的困难，同时也提高了吨煤成本，本文在分析现有传统的支护形式的基础上，进行了巷道底板镂空支护试验。镂空是让高应力的巷道围岩在受到水平主应力作用而发生底膨时，巷道周边有一定的卸压空间，等镂空底板向上膨到一定量时再进行抄底，从而减少了巷道的维修，延长了巷道维修周期，降低巷修费用，提高经济效益。
곡강광정속우남방전형적심부광정，개채수평재-850 m ，지압대，동시수도채동영향，항도변형대，변형주기쾌，급생산화안전대래료흔대적곤난，동시야제고료둔매성본，본문재분석현유전통적지호형식적기출상，진행료항도저판루공지호시험。루공시양고응력적항도위암재수도수평주응력작용이발생저팽시，항도주변유일정적사압공간，등루공저판향상팽도일정량시재진행초저，종이감소료항도적유수，연장료항도유수주기，강저항수비용，제고경제효익。
Qujiang Colliery is typical of deep mine on the mining level of -850 meters with high ground pressure . Mining influence on roadway leads to great deformation and rapid deformation period ,which has caused great dif-ficulties in safety production and also increased the unit coal cost .By analysis of traditional support patterns ,the author present the hollowed -out support experiment on roadway floor ,in which floor heave occurs due to the action of horizontal principle stress on the high -stressed surrounding rock with pressure relief space and bottom-out is carried out when hollowed -out floor heaves upward to a certain content ,which has reduced roadway maintenance ,lengthened the maintenance period ,decreased the maintenance cost and improved the economic ben-efits .