CAJ | 학술논문

针对金川二矿区14行风井的返修支护方案,本文根据金川矿区高应力破碎岩体的条件,从锚杆、喷射混凝土、钢筋网三方面,分析了该方案中喷锚网支护的作用机理,并通过数值方法分析了该返修支护方案的效果.研究结果表明:14行风井的返修支护措施对竖井围岩移动、变形有一定的限制作用,但效果不是很好;随着开采深度和规模的扩大,井筒围岩还将产生较大的位移,并有可能重新发生破坏.
침대금천이광구14행풍정적반수지호방안,본문근거금천광구고응력파쇄암체적조건,종묘간、분사혼응토、강근망삼방면,분석료해방안중분묘망지호적작용궤리,병통과수치방법분석료해반수지호방안적효과.연구결과표명:14행풍정적반수지호조시대수정위암이동、변형유일정적한제작용,단효과불시흔호;수착개채심도화규모적확대,정통위암환장산생교대적위이,병유가능중신발생파배.
Taking the supporting program for repairing Shaft No.14 in Jinchuan No.2 mine area as the research object,we firstly analyzed the mechanism of its shotcrete-bolting technique under the condition of high stress and cracked rock mass in Jinchuan Nickel mine.Furthermore,we analyzed its reinforcement performance by numerical simulation.The result showed that the supporting program took effect to restrict movement and deformation of the rock mass,but its performance is fair.As the mining depth and scale increase,the surrounding rock of the shaft would be deformed further or even be destroyed.