含交叉裂隙岩体相似材料试件力学性能单轴压缩试验

›› 2012, Vol. 33 ›› Issue (12): 3674-3679.

含交叉裂隙岩体相似材料试件力学性能单轴压缩试验

张波^{1, 2}，李术才^{1, 2}，杨学英³，张敦福¹，邵长利^{1, 4}，杨为民²

1.山东大学土建与水利学院，济南 250061；2.山东大学岩土与结构工程研究中心，济南 250061； 3.山东城市建设职业学院，济南 250014；4.暨南大学理工学院，广州 510632

收稿日期:2012-06-18 出版日期:2012-12-12 发布日期:2012-12-15
作者简介:张波，男，1977年生，博士，讲师，主要从事大型结构动力分析及节理岩体加锚力学机制方面的研究工作
基金资助:
高等学校博士学科点专项科研基金新教师类资助课题（No. 20110131120035）；山东大学自主创新基金（No. 2012TS059）；山东省自然科学基金（No. ZR2012EEQ007）；高等学校博士学科点专项科研基金（No. 20100131120046）

Uniaxial compression tests on mechanical properties of rock mass similar material with cross-cracks

ZHANG Bo^{1, 2}, LI Shu-cai^{1, 2}, YANG Xue-ying³, ZHANG Dun-fu¹, SHAO Chang-li^{1, 4}, YANG Wei-min²

1. School of Civil and Hydraulic Engineering, Shandong University, Jinan 250061, China; 2. Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China; 3. Shandong Urban Construction Vocational College, Jinan 250014, China; 4. College of Science and Engineering, Jinan University, Guangzhou 510632, China

Received:2012-06-18 Online:2012-12-12 Published:2012-12-15

摘要/Abstract

摘要： 以相似材料制作含交叉裂隙岩体试件，考虑主裂隙与加载方向之间角度变化及主、次裂隙之间角度变化制作20组试件，对试件进行单轴压缩试验，研究交叉裂隙对岩体破坏模式及力学特性的影响。研究表明，主裂隙与加载方向呈0°及90°时，试件破坏主要为沿次裂隙扩展的剪切型破坏；当主裂隙与加载方向呈30°及45°时，试件破坏主要是沿主裂隙扩展所致的剪切型破坏；主裂隙角度一致情况下，大部分含交叉裂隙岩体破坏强度高于含单向裂隙岩体，含交叉裂隙岩体试件应力-应变曲线峰后下降斜率比含单向裂隙岩体大；主裂隙角度一致情况下，当次裂隙与主裂隙呈45°夹角左右时，岩体试件强度较低，当次裂隙与主裂隙呈30°及90°夹角左右时，岩体试件强度较高。

关键词: 岩体, 交叉裂隙, 相似材料, 破坏模式, 力学性能

Abstract: The influences of cross-cracks on the jointed rock mass failure modes and mechanical properties were studied. The brittle jointed rock mass specimens with cross-cracks were simulated by similar material. There were 20 groups of jointed rock mass similar material specimens in which the angle between main crack and loading direction and the angle between main crack and secondary crack were taken as changing parameters. The specimens of jointed rock mass similar material were tested to obtain the influences of cross-cracks on jointed rock mass failure modes and mechanical properties. The test results show that when the angles between main crack and loading direction are 0°and 90°, the failure modes of specimens are mostly shear type failure propagating from the secondary crack; when the angles between main crack and loading direction are 30°and 45°, the failure modes of specimens are mostly shear type failure propagating from the main crack; when the main cracks are at same angle, the strength of most jointed rock mass similar material specimens with cross-cracks is higher than the strength of specimens with single crack; the post-peak stress-strain curve descending slopes of most jointed rock mass similar material specimens with cross-cracks are steeper than the slopes of specimens with single crack; the specimens have low strength when the angle between main crack and secondary crack is about 45°, and the specimens have high strength when the angles between main crack and secondary crack are about 30° or 90°.

Key words: rock mass, cross-cracks, similar material, failure mode, mechanical property

中图分类号:

TU 458

张波，李术才，杨学英，张敦福，邵长利，杨为民 . 含交叉裂隙岩体相似材料试件力学性能单轴压缩试验[J]. , 2012, 33(12): 3674-3679.

ZHANG Bo , LI Shu-cai , YANG Xue-ying , ZHANG Dun-fu , . Uniaxial compression tests on mechanical properties of rock mass similar material with cross-cracks[J]. , 2012, 33(12): 3674-3679.

参考文献

相关文章 15

[1]	孙锐, 杨峰, 阳军生, 赵乙丁, 郑响凑, 罗静静, 姚捷, . 基于二阶锥规划与高阶单元的自适应上限有限元研究[J]. 岩土力学, 2020, 41(2): 687-694.
[2]	王培涛, 黄正均, 任奋华, 章亮, 蔡美峰, . 基于3D打印的含复杂节理岩石直剪特性及破坏机制研究[J]. 岩土力学, 2020, 41(1): 46-56.
[3]	鲁海峰, 孟祥帅, 颜伟, 姚多喜, . 采煤工作面层状结构底板采动稳定及破坏深度的圆弧滑动解[J]. 岩土力学, 2020, 41(1): 166-174.
[4]	戴国亮, 朱文波, 郭晶, 龚维明, 赵学亮, . 软黏土中吸力式沉箱基础竖向抗拔承载特性试验研究[J]. 岩土力学, 2019, 40(S1): 119-126.
[5]	肖瑶, 邓华锋, 李建林, 支永艳, 熊雨. 长期浸泡作用下灌浆加固裂隙岩体劣化效应[J]. 岩土力学, 2019, 40(S1): 143-151.
[6]	范运辉, 朱其志, 倪涛, 张坤, 张振南, . 基于弹性张量离散化的脆延转变本构模型研究[J]. 岩土力学, 2019, 40(S1): 181-188.
[7]	支永艳, 邓华锋, 肖瑶, 段玲玲, 蔡佳, 李建林. 微生物灌浆加固裂隙岩体的渗流特性分析[J]. 岩土力学, 2019, 40(S1): 237-244.
[8]	丁振杰, 郑俊, 吕庆, 邓建辉, 童孟胜, . 《工程岩体分级标准》中边坡工程岩体质量指标计算方法的讨论[J]. 岩土力学, 2019, 40(S1): 275-280.
[9]	崔学杰, 晏鄂川, 陈武. 基于改进遗传算法的岩体结构面产状聚类分析[J]. 岩土力学, 2019, 40(S1): 374-380.
[10]	金爱兵, 刘佳伟, 赵怡晴, 王本鑫, 孙浩, 魏余栋, . 卸荷条件下花岗岩力学特性分析[J]. 岩土力学, 2019, 40(S1): 459-467.
[11]	王钦科, 马建林, 陈文龙, 杨彦鑫, 胡中波, . 上覆土嵌岩扩底桩抗拔承载特性离心模型试验及计算方法研究[J]. 岩土力学, 2019, 40(9): 3405-3415.
[12]	许江, 邬君宇, 刘义鑫, 雷娇, . 不同充填度下岩体剪切−渗流耦合试验研究[J]. 岩土力学, 2019, 40(9): 3416-3424.
[13]	李博, 黄嘉伦, 钟振, 邹良超, . 三维交叉裂隙渗流传质特性数值模拟[J]. 岩土力学, 2019, 40(9): 3670-3768.
[14]	陈庆发, 尹庭昌, 高远, . 地下矿山裂隙岩体结构均质区三维划分方法研究[J]. 岩土力学, 2019, 40(8): 3181-3188.
[15]	刘新荣, 邓志云, 刘永权, 刘树林, 路雨明, . 地震作用下水平层状岩质边坡累积损伤与破坏模式研究[J]. 岩土力学, 2019, 40(7): 2507-2516.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed