中文摘要：

采用相似材料模拟试验对不同节理倾角、节理贯通度、节理组数、荷栽应变率、试件长径比、节理厚度和节理充填物等7种工况下的节理岩体在单轴压缩荷栽作用下的强度及破坏模式进行了研究。结果表明：节理岩体的破坏模式及其峰值强度与节理构造形态密切相关。时于单节理岩体，其强度及破坏特征在很大程度上受节理面倾角控制，将可能产生沿节理面的剪切滑移破坏或贯穿节理面的劈裂破坏，且与第一种破坏模式相对应的岩体强度最低。对于非贯通节理岩体，其强度介于完整岩体和贯通节理岩体之间。随着平行节理组数的增加，岩体强度呈逐渐下降趋势。随着栽荷应变率增加，岩体抗压强度逐渐增大，试件的破坏模式也变得更加复杂。试件长径比基本没有改变岩体的破坏模式，但随着长径比的增加，其强度逐渐增大。随着节理厚度增加，试件峰值强度逐渐降低。不同的节理填充物对试件强度也有影响。

英文摘要：

The strength and failure modes of jointed rock mass in 7 cases with different dip angle and continuity degree of joint, number of joint set, load strain ratio, slenderness ratio, thickness of joint and joint filling under uniaxial com- pressive load were studied by means of similar material sim- ulation test. The results showed that failure modes and peak strength of jointed rock mass were closely related to the con-figuration of joint. The strength and failure characteristic of rock mass with single joint were heavily controlled by the dip angle of joint, shear- slipping failure along joint face or splitting failure across joint face would occur in this rock mass, in which the strength of rock mass is minimum corre- sponding to the first failure mode. The strength of rock mass with discontinuous joints was in between ones of intact rock mass and rock mass with continuous joints. The strength of rock mass gradually decreased with the numbers of parallel joint set increasing. With increasing of load strain ratio, the strength of rock mass gradually increased, and the failure mode of test specimens become more complex. The slenderness ratio of test specimens had no influence on their failure mode, while with increase of the slenderness ratio the strength gradually increased. With increase of joint thickness the strength of rock mass gradually decreased. Various joint fillings had effect on the strength of specimens.