CAJ | 학술논문

根据穿层岩石锚杆作用特点，通过建立以层面粘结力C、内摩察角φ等效表述的数值模型，将位移不连续方法(DDM)应用于深部硐室层状岩石顶板锚杆支护效果的分析.探讨了不同锚固条件下硐室顶板的铅垂位移特征；通过DDM计算结果与传统梁理论所得结果的比较及顶板围岩应力分布特征的分析，指出了利用梁理论进行锚杆支护设计的不合理性.结果表明，合理的地下层状岩石锚杆支护参数设计应在考虑锚杆与围岩的共同作用条件下计算.
근거천층암석묘간작용특점，통과건립이층면점결력C、내마찰각φ등효표술적수치모형，장위이불련속방법(DDM)응용우심부동실층상암석정판묘간지호효과적분석.탐토료불동묘고조건하동실정판적연수위이특정；통과DDM계산결과여전통량이론소득결과적비교급정판위암응력분포특정적분석，지출료이용량이론진행묘간지호설계적불합이성.결과표명，합리적지하층상암석묘간지호삼수설계응재고필묘간여위암적공동작용조건하계산.
According to the supporting behaviors of layer rock-bolt, displacement discontinuity method (DDM) was applied to analyze the supporting effect of rock-bolt through layer roof at deep opening by establishing the numerical model expressed in friction angle φ and cohesion C. The stress distribution and vertical displacement were investigated under deferent rock-bolt supporting conditions. In addition, the validity of applying classical beam theory to calculate supporting parameter was discussed by means of comparing DDM calculating result with that of by the beam theory. It shows that the action of bolt together with rock must be taken into consideration in order to correctly make computation of rock-bolt supporting parameters.