Mechanical property of rock-like material with intersecting multi-flaws under uniaxial compression

被引：0

作者：

Zhang, Bo ^{[1
,2
,3
]}

Li, Shucai ^{[1
,3
]}

Yang, Xueying ^{[4
]}

Zhang, Dunfup ^{[1
]}

Wang, Qi ^{[3
,5
]}

Cai, Wei ^{[1
]}

Yang, Chunxiao ^{[1
]}

Deng, Zhenquan ^{[1
]}

机构：

[1] School of Civil and Hydraulic Engineering, Shandong University, Jinan, 250061, Shandong

[2] State Key Laboratory Breeding Base for Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao, 266590, Shandong

[3] Geotechnical and Structural Engineering Research Center, Shandong University, Jinan, 250061, Shandong

[4] Engineering Management Department, Shandong Urban Construction Vocational College, Jinan, 250014, Shandong

[5] Longkou Coal-electric Co., Ltd., Longkou, 265700, Shandong

来源：

Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2015年 / 34卷 / 09期

关键词：

Intersecting multi-flaws; Mechanical property; Rock mass; Rock mechanics; Rock-like material; Uniaxial compression;

D O I：

10.13722/j.cnki.jrme.2014.0876

中图分类号：

TU4 [土力学、地基基础工程];

学科分类号：

081401 ;

摘要：

The mechanical properties of rock masses with intersecting multi-flaws under uniaxial compression were studied with specimens of rock-like material. Two kinds of intersecting multi-flaws were considered, one was comprised of the primary flaws and the secondary flaws, and the other one was composed of the multi-flaws with the same length. The specimens were tested under the uniaxial compression. The strength of specimen with two intersecting multi-flaws was higher than that of specimen with a single flaw. The strength of specimen with more than two intersecting multi-flaws composed of a primary flaw and secondary flaws was almost the same with that of specimen with a single flaw. Those specimens with more than 2 intersecting flaws with the same length as the primary flaw had the lower strengths than the specimen with a single flaw. The increasing of the number of the secondary flaws had little influence on the strengths of specimens with the intersecting multi-flaws composed of a primary flaw and secondary flaws. However, the increasing of the number of flaws had great influence on the strengths of specimens with intersecting multi-flaws composed of flaws with the same lengths. Most of the strain values corresponding to the peak strength of specimens with intersecting multi-flaws were lower than that of specimen with a single flaw. The initial stress of fracturing of the specimen with the intersecting multi-flaws composed of a primary flaw and secondary flaws were higher than that of specimen with a single flaw. Most of the initial stresses of fracturing of specimens with the intersecting multi-flaws composed of flaws with the same length to the main flaw were lower than that of specimen with a single flaw. The failure surfaces of the specimen with a single flaw under the uniaxial compression were shear cracks, but most of the failure surfaces of specimens with the intersecting multi-flaws were tension cracks. ©, 2015, Academia Sinica. All right reserved.

引用

页码：1777 / 1785

页数：8

共 18 条

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