CAJ | 학술논문

会泽铅锌矿开采已经进入深部矿段，“三高”特征日益严重。基于对已有资料分析及野外调查，对1031矿段原岩分析研究，对矿段揭露岩层进行综合分类，得出原岩特征。通过原位测试，得出原岩力学参数，运用FLAC3D对巷道围岩进行稳定性分析计算，计算结果表明巷道开挖之后，应力重新分布，出现应力集中现象，其中水平应力于边墙中点处达到最大值，竖直应力分别于底板中点及顶拱处达到最大值。岩体的抗压强度大于岩层模拟的最大压应力，说明巷道开挖之后是稳定的，只有局部需要支护，符合实际开挖情况。
회택연자광개채이경진입심부광단，“삼고”특정일익엄중。기우대이유자료분석급야외조사，대1031광단원암분석연구，대광단게로암층진행종합분류，득출원암특정。통과원위측시，득출원암역학삼수，운용FLAC3D대항도위암진행은정성분석계산，계산결과표명항도개알지후，응력중신분포，출현응력집중현상，기중수평응력우변장중점처체도최대치，수직응력분별우저판중점급정공처체도최대치。암체적항압강도대우암층모의적최대압응력，설명항도개알지후시은정적，지유국부수요지호，부합실제개알정황。
Huize Pb-Zn ore has already entered into deep block mining along with more serious‘3-high’ characters. Based on researches on existing materials and field survey,we obtained the characters of parental rocks by classifying exposed rock strata. Throughout in-situ test,the mechanical parameters of parental rocks has be derived,meanwhile. The analysis results of flac3D employed on stability of surrounding rocks of roadway showed the stresses has been redistributed after exaction,and gave rise to stresses concentration. In the middle of wall,the horizontal stress reached its maximum. However,the maximum vertical stress happened at the middle of bottom and top arc. The compressive strength of rocks is greater than the modeled maximum compressive stress,which testifies that it is stable after excavation as long as local retaining and protecting has existed,and this also conform to the actual conditions.