CAJ | 학술논문

为研究改进刚体弹簧法在复杂裂隙围岩分析中的适用性,以某隧道工程为例,开展了算例验证分析. 首先根据实测裂隙地质资料,采用Monte-Carlo方法生成随机裂隙网络,并通过块体搜索方法获取岩石块体信息;然后利用改进刚体弹簧方法计算围岩在开挖卸荷作用下的位移和破坏模式,并评价支护效果. 计算表明,改进刚体弹簧法可以有效模拟裂隙不利组合引起的开挖边墙滑动失稳,并能准确把握边墙的渐进破坏特性,符合一般工程实践的规律.
위연구개진강체탄황법재복잡렬극위암분석중적괄용성,이모수도공정위례,개전료산례험증분석. 수선근거실측렬극지질자료,채용Monte-Carlo방법생성수궤렬극망락,병통과괴체수색방법획취암석괴체신식;연후이용개진강체탄황방법계산위암재개알사하작용하적위이화파배모식,병평개지호효과. 계산표명,개진강체탄황법가이유효모의렬극불리조합인기적개알변장활동실은,병능준학파악변장적점진파배특성,부합일반공정실천적규률.
For studying the adaptability of improved Rigid Block Spring Method in stability analysis of complex fracture rock, we conduct sample verification for a tunnel project. Firstly based on the geologic data of the fracture rock mass, the Monte-Carlo method is employed to generate random discrete fracture network and the block search method is adopted to obtain the block infor-mation. The improved Rigid Block Spring Method is used to analyze displacements and failure modes of surrounding rocks under excavation unloading, and to assess the effects of the supporting plan. The results indicate that the improved Rigid Block Spring Method could simulate the slipping failure caused by unfavorable fracture combination and accurately capture the progressive fail-ure process of the side wall, which are in accordance with engineering practices.