[1]陈云娟,*,刘洪钊,等.交叉节理类岩石裂隙扩展规律研究[J].山东建筑大学学报,2019,34(02):22-26.[doi:10.12077/sdjz.2019.02.004]
 CHEN Yunjuan,*,LIU Hongzhao,et al.Study on crack propagation of cross jointed rocklike specimen[J].Journal of Shandong jianzhu university,2019,34(02):22-26.[doi:10.12077/sdjz.2019.02.004]
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交叉节理类岩石裂隙扩展规律研究()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
34
期数:
2019年02期
页码:
22-26
栏目:
研究论文
出版日期:
2019-04-15

文章信息/Info

Title:
Study on crack propagation of cross jointed rocklike specimen
文章编号:
1673-7644(2019)02-0022-05
作者:
陈云娟1*刘洪钊1尹福强2崔亦秦1刘华军3
(1.山东建筑大学 土木工程学院,山东 济南 250101;2.山东省国土测绘院,山东 济南 250102;3.山东建筑大学 资产处,山东 济南 250101)
Author(s):
CHEN Yunjuan1* LIU Hongzhao1 YIN Fuqiang2 et al.
(1. School of Civil Engineering, Shandong Jianzhu University, Jinan 250101, China; 2. Shandong Provincial Institute of Land Surveying and Mapping, Jinan 250102, China)
关键词:
类岩石试件交叉节理裂隙扩展室内试验非连续变形分析
Keywords:
rocklike specimen cross joint crack propagation laboratory test discontinuous deformation analysis
分类号:
TU458
DOI:
10.12077/sdjz.2019.02.004
文献标志码:
A
摘要:
交叉节理是岩体工程中普遍存在的一种不连续体,其裂隙扩展对岩体工程的安全具有重要的影响,研究交叉节理类岩石裂隙扩展规律,可为岩体工程安全施工和稳定性分析提供参考依据。文章基于相似理论,以砂岩为原型,通过多组配比试验选配抗压强度为1∶1的类岩石试件,并分别对单、双X型节理试件进行单轴压缩试验,研究单向加载条件下交叉节理的裂隙扩展规律,采用非连续变形分析方法(DDARF)对裂隙扩展过程进行数值模拟,并与室内试验进行对比。结果表明:单X型节理岩体裂隙扩展会以某一条节理为起裂节理,并沿起裂节理迅速扩展,释放能量达到新的平衡;对于双X型节理岩体,某组X型节理会起主控作用,直到试件破坏。DDARF可以较好地模拟裂隙的扩展路径,与室内试验相辅相成,共同揭示交叉节理的裂隙扩展规律。
Abstract:
Cross joint is a common kind of discontinuities which exists in rock mass, and its crack propagation has great influence on rock engineering’s security. Study on the crack propagation of cross jointed rock mass can provide reference for the safety construction and stability analysis in rock engineering. Based on the similarity theory, with sandstone as the prototype, multimix ratio tests are carried out and finally the rocklike specimens with the compressive strength of 1∶1 are made. Uniaxial compressive tests of single X jointed specimens and double X jointed specimens are carried out respectively, and the crack propagation laws of cross joints under uniaxial loading are studied. At the same time, the crack propagation process is numerically simulated by the discontinuous deformation analysis method DDARF, and the simulation results are compared with the laboratory tests. Results show that, during the cross jointed rocklike specimens cracking process, some joint or some set of X joints are acted as the initiation one for cracking, and along which propagate quickly, release energy until reach a new equilibrium; the discontinuous deformation analysis method can well simulate the crack propagation, together with the laboratory tests to reveal the crack propagation law of cross jointed rock mass.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-03-01基金项目:国家自然科学基金青年项目(51609130);山东省自然科学基金青年项目(ZR2016EEQ10);山东建筑大学博士基金项目(XNBS1704)作者简介:陈云娟(1984-),女,讲师,博士,主要从事岩土工程、地下工程稳定性等方面的研究.Email:skdcyj@126.com\[*通讯作者\]
更新日期/Last Update: 2019-04-26