土木工程与管理学报2016，Vol.33Issue(4)：35-40,6.
基于 DDARF 的节理岩体破坏和锚固效应
Failure and Anchoring Mechanism of Jointed Rock Mass Using DDARF
摘要
Abstract
Using DDARF method , the crack propagation process of double-fractured rock mass was simulated under uniaxial and biaxial compression .The influences of fracture space , fracture angle , fracture relative distance and lateral pressure on rock properties were studied .The peak strength of rock mass shows “W” type change with the increase of fracture space and relative distance , it presents “V” type change with the increase of fracture angle .And with the increase of lateral pressure , the peak strength and initiation stress of rock mass improve than uniaxial compression .By the uniaxial compression simulation test of single joint anchored specimen , the crack propagation for four kinds of specimens with different anchor angles are obtained .It's essential to choose an optimal anchor angles .The high slope ’ s stability of a hydropower station was analyzed .After reinforcement , while new cracks initiate at the foot of slope , the crack propagation is limited in size and scope .It can not form the sliding surface , because crack does not extend to intersect with the deep fractures of the slope.It can enhance the stability of the slope .Numerical simulation is consistent with similar material model test .It is indicated that DDARF can simulate crack propagation process as well as an-chor role effectively .关键词
DDARF/节理岩体/裂纹扩展/锚固效应/水电站边坡Key words
DDARF/jointed rock mass/crack propagation/anchoring effect/hydropower station slope分类
建筑与水利引用本文复制引用
郑春梅,王明斌,雍敏,蔚立元,张磊..基于 DDARF 的节理岩体破坏和锚固效应[J].土木工程与管理学报,2016,33(4):35-40,6.基金项目
国家自然科学基金（51478213；51579239）；山东省自然科学基金（ZR2011EL049；ZR2012EEM010）；山东省高校科技计划项目（J15LG01）；鲁东大学人才引进科研基金资助项目 （）
