›› 2016, Vol. 37 ›› Issue (8): 2231-2237.doi: 10.16285/j.rsm.2016.08.014

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experiment study on similarity ratio of similar material for model test on red-bed soft rock

YANG Xu1, 2, 3, SU Ding-li1, 2, 3, ZHOU Bin1, 2, 3, LIU Zhen2, 3, 4, ZHOU Cui-ying1, 2, ,3, 4   

  1. 1. School of Engineering, Sun Yat-sen University, Guangzhou, Guangdong 510275, China; 2. Research Center for Geotachnical Engineering and Information Technology, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China; 3. Research Center of Industry Engineering Transport Infrastructure Security, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China; 4. School of Marine Science, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
  • Received:2014-10-08 Online:2016-08-11 Published:2018-06-09
  • Supported by:

    This work supported by the State Key Program of National Natural Science of China(41030747), the Special Funds of National Natural Science Foundation of China(41227002), the General Program of National Natural Science Foundation of China(40672194，41472257), Key Program of the Natural Science Foundation of Guangdong Province, China(S2011020001229), the Key Project on the Integration of Industry, Education and Research of Guangdong Province, China (2012B091000146) and the Foundation for High-level Talents in Higher Education of Guangdong Province, China (5221001).

PDF (Chinese)

1165

Abstract: The similarity model test is one of the important means to study the engineering properties of red-bed soft rock; the test result reliability depends on the correct selection and rational proportion of a series of similar materials. In view of the softening characteristics of the saturated soft rock, a series of mixture ratio tests on similar material with orthogonal design method is conducted by adding the quicklime into the traditional similar materials. Four influential factors are considered in all the tests, including the ratio of iron pore powder to barite powder to aggregates, the content and ratio of iron pore powder to iron pore powder plus barite powder, the content of gypsum, and the content of quicklime. Each factor is classified into 5 levels. In total, 610 specimens in 25 groups were prepared. For each group of specimens, the physico-mechanical indices, such as softening coefficient, density, unconfined uniaxial compressive strength, tensile strength, cohesive force, etc. were tested. On the basis of these test specimens, the influential factors of the concerned parameters were analyzed; meanwhile the applicability of the ratio result were examined. At last, the similar materials of three typical soft rock specimens were prepared to test the softening coefficient; and a comparison analysis was also carried out with the real soft rock test. The test results reveal that: 1) the physico-mechanical properties of the similar material fabricated according to the similarity ratio proposed in this paper may vary considerably, and this can meet the requirement of the geomechanical model test of soft rock; 2) the physico-mechanical properties of the similar material demonstrate an evident variation law that facilitates the identification of the optimum mixture ratio for any soft rock material; 3) the softening coefficients of the saturated similar material, in the three comparative tests, are consistent with the real soft rock to a great extent.

Key words: red-bed soft rock, similar model, similar material, mixture ratio, experimental investigation

CLC Number: 

  • TU 452

[1] JIANG Quan, WU Si, LIU Qiang, XIN Jie, ZHENG Hong, . Basic mix ratio test and corresponding quality evaluation for cement-based 3D printing materials [J]. Rock and Soil Mechanics, 2023, 44(5): 1245-1259.
[2] XU Gang, ZHANG Chun-hui, YU Yong-jiang, . Experiments of overburden breaking and compression frame of fully mechanized caving face and the prediction model [J]. Rock and Soil Mechanics, 2020, 41(S1): 106-114.
[3] NING Yi-bing, TANG Hui-ming, ZHANG Bo-cheng, SHEN Pei-wu, ZHANG Guang-cheng, XIA Ding, . Investigation of the rock similar material proportion based on orthogonal design and its application in base friction physical model tests [J]. Rock and Soil Mechanics, 2020, 41(6): 2009-2020.
[4] XU Jiang, WU Jun-yu, LIU Yi-xin, LIE Jiao, . Experimental study of shear-seepage coupling properties of rock mass under different filling degrees [J]. Rock and Soil Mechanics, 2019, 40(9): 3416-3424.
[5] ZHOU Cui-ying, HUANG Si-yu, LIU Zhen, LU Yi-qi, . The interface process and its dynamic model of red-bed soft rock softening [J]. Rock and Soil Mechanics, 2019, 40(8): 3189-3196.
[6] CHU Zhao-fei, LIU Bao-guo, REN Da-rui, SONG Yu, MA Qiang, . Development of rheology similar material of soft rock and its application in model test [J]. Rock and Soil Mechanics, 2019, 40(6): 2172-2182.
[7] LIU Wei-ning, JIANG Bo-long, MA Meng, GAO Jian, . Elementary experimental investigation of the periodic piles for vibration isolation of design frequency range [J]. Rock and Soil Mechanics, 2019, 40(11): 4138-4148.
[8] HOU Gong-yu, LI Xiao-rui, LIANG Hong-yao, LIANG Jin-ping, ZHOU Meng-hui, CUI Yong-ke，. Research on proportion of high strength gypsum materials and its application to excavation unloading test of surrounding rock specimen(thick wall cylinder) [J]. , 2018, 39(S1): 159-166.
[9] YAO Ai-jun, ZHANG Jian-tao, GUO Hai-feng, GUO Yan-fei. Influence of unloading-loading of foundation on shield tunnel underneath [J]. , 2018, 39(7): 2318-2326.
[10] LIU Jin-hui, LI Wen-xiao, LIU Yu-sen, LIU Bao-guo，. A method for determining the ratio of similar material to simulate porous water-bearing stratum [J]. , 2018, 39(2): 657-664.
[11] SUN Yang-yang, WANG Yuan, ZHANG Qing-hua, DUAN Jian-li, ZHANG Wen-yuan, ZHANG Zheng-lin, YOU Ze-wei,. Strain transfer of internal strain of model similar materials with optical fibre measurement [J]. , 2018, 39(2): 759-764.
[12] WANG Bei-fang, LIANG Bing, WANG Jun-guang, SUN Ke-ming, SUN Wei-ji, CHI Hai-bo，. Experiment study on rock bulking of coal mine underground reservoir [J]. , 2018, 39(11): 4086-4092.
[13] XU Chu, HU Xin-li, HE Chun-can, XU Ying, ZHOU Chang. Development and application of similar material for reservoir landslide model test [J]. , 2018, 39(11): 4287-4293.
[14] LIU Xiao-yun, YE Yi-cheng, WANG Qi-hu, ZHANG Hua, LIU Yan-zhang, LIU Yang，. Mechanical properties of similar material specimens of composite rock masses with different strengths under uniaxial compression [J]. , 2017, 38(S2): 183-190.
[15] WANG Peng, SHU Cai, SHI Feng, HU Guo-zhong, WANG Hong-tu,. Orthogonal experimental study of similar materials properties of different densities, sand-binder ratios and residual moisture contents [J]. , 2017, 38(S2): 229-235.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] TAN Xian-jun, CHEN Wei-zhong, YANG Jian-ping, YANG Chun-he. Study of THM-damage coupling model of gas storage in salt rock with interlayer[J]. , 2009, 30(12): 3633 -3641 .
[2] WEI Xing，WANG Gang，YU Zhi-ling. FEM of traffic-load-induced settlement of road on soft clay[J]. , 2010, 31(6): 2011 -2015 .
[3] WEN Shi-yi, LI Jing , SU Xia , YAO Xiong. Studies of mesomechanical structure characters of surrounding rock failure under complex stress state[J]. , 2010, 31(8): 2399 -2406 .
[4] LIU Jie，LI Jian-lin，QU Jian-jun，Cheng Xing，LI Jian-wu，LUO Shi-wei. Multiple factors analysis of influence of developing horizontal displacement at Dagangshan dam abutment slope based on unloading rock mass mechanics[J]. , 2010, 31(11): 3619 -3626 .
[5] JIANG Zheng-wei, PENG Jian-bing, WANG Qi-yao. Adverse geological problems and countermeasure of Xi’an Metro Line 3[J]. , 2010, 31(S2): 317 -321 .
[6] LIU Yong-hai, ZHU Xiang-rong, CHANG Lin-yue. Determining preconsolidation pressure by mathematic analysis based on casagrande method[J]. , 2009, 30(1): 211 -214 .
[7] LI Xing-gao, LIU Wei-ning. Discussion on computing water and earth pressures on retaining wall separately[J]. , 2009, 30(2): 419 -424 .
[8] ZHU Lei, HONG Bao-ning. Physico-mechanical characteristics of powdered soil of coal measure strata[J]. , 2009, 30(5): 1317 -1322 .
[9] ZHOU Chun-mei, ZHANG Ze-jun, XU Da-jie, WANG Sheng-wei, LI Xian-fu. Research on numerical simulation of paleo-tectonic stress fields and hazard prediction[J]. , 2009, 30(7): 2141 -2146 .
[10] SUN Chang-shuai, YANG Hai-wei, XU Guang-li. Researches on pull-out capacity calculating method of rock bolt foundation[J]. , 2009, 30(S1): 75 -78 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd