摘要
节理的表面形貌可按其规模大小分为起伏度和粗糙度两类。节理面的几何和力学特性对非贯通节理岩体扩展贯通有重要影响。典型节理面的粗糙形貌可以模拟为一系列非规则的、齿形凸台形貌。综述了贯通节理破坏理论新的进展,并探讨了节理破坏理论的适用性。结合非贯通节理岩体研究的现状,提出了考虑节理的粗糙度和起伏度情况下研究非贯通节理岩体扩展贯通强度和变形特性的新思路。
The surface profile of joints can be characterized by the waviness and unevenness components. The geometric and mechanical properties of discontinuious joints rockmass have important influence on its failure mechanism and strength. The rough profile of the joint sufaee is modeled as a series of irregular shaped, triangular asperities. Both the typical theories and development of failure mechanism for joints were summarized and their applicability was discussed. According to the current situation of the study, a new idea is proposed that new failure mechanism and theories are applied to study strength and deformation properties for discontinuous joint rockmass with considering joint waviness and unevenness.
出处
《地下空间与工程学报》
CSCD
2007年第4期682-687,693,共7页
Chinese Journal of Underground Space and Engineering
基金
国家自然科学基金项目(No.40472142和No.50579088)
关键词
节理
应用
直剪试验
破坏机理
剪切强度
joints
application
direct shear test
failure mechanism
shear strength criteria
