三轴应力条件下粉砂质泥岩分级松弛特性

doi:10.6040/j.issn.1672-3961.0.2017.099

摘要/Abstract

摘要： 为研究软岩的应力松弛特性,采用分级荷载的方式对粉砂质泥岩进行三轴条件下的松弛试验。通过对不同围压条件下泥质粉砂松弛特性的分析,发现Burgers模型能够很好的反映出泥质粉砂岩不同应力条件下的松弛特性。研究应力松弛度随各级荷载初始应力水平的演化规律,结果表明:发现各级荷载初始应力较低时,应力松弛度随着各级荷载初始应力的升高而指数型降低;各级荷载初始应力较高时,部分岩样的应力松弛度呈现出略微升高的趋势。

关键词: 松弛试验, Burgers模型, 应力松弛度, 粉砂质泥岩

Abstract: To investigate the stress relaxation characteristics of soft rock, step loading relaxation tests under tri-axial stress condition were performed with silt mudstone samples. Based on the analysis of silt mudstone relaxation characteristics with different confining stresses, the stress relaxation properties could be well reflected by the Burgers model. The evolution of stress relaxation rate with the change of original stresses was studied. The results showed that, when the original stress was lower, the stress relaxation rate decreased exponentially with the increase of the initial stress; while higher original stress was applied, the stress relaxation of some samples showed a slight increase trend.

Key words: silt mudstone, Burgers model, stress relaxation rate, stress relaxation test

中图分类号:

TU45

陈方明,胡泉光,宁光忠. 三轴应力条件下粉砂质泥岩分级松弛特性[J]. 山东大学学报(工学版), 2017, 47(3): 125-129.

CHEN Fangming, HU Quanguang, NING Guangzhong. Silt mudstone stress relaxation characteristics under tri-axial stress condition[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2017, 47(3): 125-129.

参考文献

[1] 郑欣平. 金川二矿区深部岩石蠕变与松弛特性研究[D]. 长沙:中南大学, 2012. ZHENG Xinping. Research on creep and relaxation properties of deeprock masses in Jinchuan no.2 mining district[D]. Changsha: Central South University, 2012.
[2] 邱贤德, 庄乾城. 岩盐流变特性的研究[J]. 重庆大学学报(自然科学版), 1995, 18(4): 96-103. QIU Xiande, ZHANG Qiancheng. Research on the rheology behavior of rock salt[J]. Journal of Chongqing University(Natural Science Edition), 1995, 18(4): 96-103.
[3] 李铀,朱维申,彭意,等. 某地红砂岩多轴受力状态蠕变松弛特性试验研究[J]. 岩土力学, 2006, 27(8):1248-1252. LI You, ZHU Weishen, PENG Yi, et al. Multi-axial experimental study on creep and relaxation properties of red sandstone from somewhere[J]. Rock and Soil Mechanics, 2006, 27(8): 1248-1252.
[4] 周德培. 流变力学原理在岩土工程中的应用[M]. 成都:西南交通大学出版社, 1995. ZHOU Depei. Application of rheological mechanics principle in geotechnical engineering[M]. Chengdu: Southwest Jiaotong University Press, 1995.
[5] 于怀昌, 李亚丽, 刘汉东. 粉砂质泥岩三轴压缩应力松弛本构模型研究[J]. 煤炭学报, 2011, 36(8): 1258-1263. YU Huaichang, LI Yali, LIU Handong.Study of stress relaxation model of silty mudstone under triaxial compression[J]. Journal of China Coal Society, 2011, 36(8): 1258-1263.
[6] RUTTER E H, MAINPRICE D H. The effect of water on stress relaxation of faulted and unfaultedsandstone[J]. Pure and Applied Geophysics, 1978, 116(4-5):634-654.
[7] TANG L Z, PAN C L. Experiment study on properties of stress relaxation of rock under deformation at peak load[J]. Rock and Soil Mechanics, 2003, 24(6):940-942.
[8] PARASCHIV-MUNTEANU I, CRISTESCU N D. Stress relaxation during creep of rocks around deep boreholes[J]. International Journal of Engineering Science, 2001, 39(7): 737-754.
[9] 李永盛. 单轴压缩条件下四种岩石的蠕变和松弛试验研究[J]. 岩石力学与工程学报,1995,14(1):39-47. LI Yongsheng. Creep and relaxation of 4 kinds of rock under uniaxial compression tests[J]. Journal of Rock Mechanics and Engineering, 1995, 14(1):39-47.
[10] 杨春和,殷建华,DAEMEN J J K. 盐岩应力松弛效应的研究[J]. 岩石力学与工程学报,1999,18(3):262-265. YANG Chunhe, YIN Jianhua, DAEMEN J J K. The investigation of stress relaxation of salt rock[J]. Journal of Rock Mechanics and Engineering, 1999, 18(3):262-265.
[11] 李铀,朱维申,彭意,等. 某地红砂岩多轴受力状态蠕变松弛特性试验研究[J]. 岩土力学, 2006, 27(8): 1248-1252. LI You, ZHU Weishen, PENG Yi, et al. Multi-axial experimental study on creep and relaxation properties of red sandstone from somewhere [J]. Rock and Soil Mechanics, 2006, 27(8): 1248-1252.
[12] 熊良宵,杨林德,张尧. 绿片岩多轴受压应力松弛试验研究[J].岩土工程学报,2010,32(8):1158-1165. XIONG Liangxiao, YANG Linde, ZHANG Yao. Stress relaxation tests on green schist specimens under multi-axial compression[J].Chinese Journal of Geotechnical Engineering,2010,32(8):1158-1165
[13] 于怀昌,周敏,刘汉东,等. 粉砂质泥岩三轴压缩应力松弛特性试验研究[J]. 岩石力学与工程学报,2011,30(4):803-811. YU Huaichang, ZHOU Min, LIU Handong, et al. Experimental investigation on stress relaxation properties of silty mudstone under triaxial compression[J]. ChineseJournal of Rock Mechanics and Engineering, 2011, 30(4):803-811.
[14] 曹平,郑欣平,李娜,等. 深部斜长角闪岩流变试验及模型研究[J]. 岩石力学与工程学报,2012,31(增1):3015-3021. CAO Ping, ZHENG Xinping, LI Na, et al. Experiment and model study of rheological characteristics for deep amphibolite[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(Supp.1):3015-3021.
[15] 田洪铭, 陈卫忠, 赵武胜,等. 宜—巴高速公路泥质红砂岩三轴应力松弛特性研究[J]. 岩土力学,2013,34(4):981-986. TIAN Hongming, CHEN Weizhong, ZHAO Wusheng, et al. Analysis of triaxial stress relaxation properties of red silty mudstone of Yichang-Badong highway[J].Rock and Soil Mechanics, 2013, 34(4):981-986.
[16] 唐礼忠,潘长良. 岩石在峰值荷载变形条件下的松弛试验研究[J].岩土力学,2003,24(6):940-942. TANG Lizhong, PAN Changliang. Experiment study on properties of stress relaxation of rock under deformation at peak load[J]. Rock and Soil Mechanics, 2003, 24(6):940-942.

相关文章 15

[1]	刘健,胡南琦,徐宝军,岳秀丽,齐泊良,仲奇. 水泥基土石坝防渗注浆材料试验[J]. 山东大学学报(工学版), 2018, 48(2): 39-45.
[2]	刘洋. 乘性故障对开闭环系统故障诊断性能的影响[J]. 山东大学学报(工学版), 2017, 47(5): 38-43.
[3]	刘洋,刘博,王峰. 基于Parameter Server框架的大数据挖掘优化算法[J]. 山东大学学报(工学版), 2017, 47(4): 1-6.
[4]	胡泉光,陈方明,宁光忠. CW-TOPSIS岩爆评判模型及应用[J]. 山东大学学报(工学版), 2017, 47(2): 20-25.
[5]	万利,王春河,王琦,李术才,邵行,江贝,孙会彬,秦乾. 超大断面隧道软弱围岩控制机制及应用[J]. 山东大学学报(工学版), 2017, 47(1): 59-67.
[6]	张伟,李海涛,王剑,王莉. 砂浆模拟裂隙岩体在动静组合荷载下的SHPB试验研究[J]. 山东大学学报(工学版), 2016, 46(6): 97-104.
[7]	蒋明镜, 方威, 司马军. 模拟岩石的平行粘结模型微观参数标定[J]. 山东大学学报(工学版), 2015, 45(4): 50-56.
[8]	郑毅, 朱成璋. 基于深度信念网络的PM_2.5预测[J]. 山东大学学报(工学版), 2014, 44(6): 19-25.
[9]	张绪涛1,2,张强勇1,曹冠华1,许孝滨1. 成型压力对铁-晶-砂混合相似材料性质的影响[J]. 山东大学学报(工学版), 2013, 43(2): 89-95.
[10]	张伟杰1,李术才1,魏久传2,张庆松1. 基于岩体极限平衡理论的煤层底板突水危险性预测[J]. 山东大学学报(工学版), 2013, 43(1): 86-91.
[11]	陈芳1,张强勇1,杨文东1, 2,张绪涛1，李文纲3,王建洪3,贺如平3. 坝区岩体的剪切蠕变经验方程及参数数值反演[J]. 山东大学学报(工学版), 2012, 42(6): 93-99.
[12]	武选正,李名川,伍宇腾 . 锦屏水电枢纽辅助洞工程岩爆现象分析及防治措施[J]. 山东大学学报(工学版), 2008, 38(3): 28-33 .
[13]	隋斌,朱维申,李树忱 . 岩锚吊车梁轮压作用下的三维稳定性分析[J]. 山东大学学报(工学版), 2008, 38(1): 80-83 .
[14]	张宏博,宋修广,黄茂松,商庆森 . 不同卸荷应力路径下岩体破坏特征试验研究[J]. 山东大学学报(工学版), 2007, 37(6): 83-86 .
[15]	刘豆豆,陈卫忠,杨建平,伍国军,李晓静,杨为民 . 二道垭隧道开挖与支护的数值模拟分析[J]. 山东大学学报(工学版), 2007, 37(1): 80-85 .

多维度评价

Viewed

Full text

Abstract

Cited

Shared

Discussed