›› 2009, Vol. 30 ›› Issue (1): 59-66.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Meso-mechanical experimental study of meso-fraeturing process of limestone under coupled chemical corrosion and water pressure

YAO Hua-yan1, FENG Xia-ting1, CUI Qiang2, ZHOU Hui1   

  1. 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. School of Resources & Civil Engineering, Northeastern University, Shenyang 110004, China
  • Received:2008-03-07 Online:2009-01-10 Published:2011-01-14

PDF (Chinese)

924

Abstract:

An experiment of pre-existing flaw limestone fracturing process is conduced under uniaxial compression in order to investigate the behavior of rock fracturing under chemical corrosion and water pressure with a new meso-mechanical testing system. Analysis the varieties of limestone’s micro-structure and composition under chemical corrosion by SEM, X-ray diffraction, water quality analysis etc.. The meso-fracturing process of rock is real-time observed and recorded using the microscope. The mechanical behavior of specimens under chemical corrosion and water pressure are studied. The researches indicate that: under chemical corrosion, the micro-structure and mineral composition have changed differently, which increase the nonhomogeneity, and degrade the strength and modulus of elasticity. The degradation of mechanical property is related to the variety of mineral amount. Water pressure changes the loading state of crack and mineral grains, which increase the velocity of crack propagation, and reduce rock strength. So the fracturing behavior under chemical corrosion and water pressure becomes more complicate.

Key words: limestone, chemical corrosion, pore pressure, fracturing, meso-mechanics

CLC Number: 

  • TU 45
[1] CHENG Tao, YAN Ke-qin, HU Ren-jie, ZHENG Jun-jie, ZHANG Huan, CHEN He-long, JIANG Zhi-jie, LIU Qiang, . Analytical method for quasi-two-dimensional plane strain consolidation problem of unsaturated soil [J]. Rock and Soil Mechanics, 2020, 41(2): 453-460.
[2] YU Li, LÜ Cheng, DUAN Ru-yu, WANG Ming-nian, . Upper bound limit analysis of three-dimensional collapse mechanism of shallow buried soil tunnel under pore pressure based on nonlinear Mohr-Coulomb criterion [J]. Rock and Soil Mechanics, 2020, 41(1): 194-204.
[3] ZHENG Kun, MENG Qing-shan, WANG Ren, YU Ke-fu, . Experimental study of acoustic emission characteristics of coral skeleton limestone under triaxial compression [J]. Rock and Soil Mechanics, 2020, 41(1): 205-213.
[4] LOU Ye, ZHANG Guang-qing. Experimental analysis of fracturing fluid viscosity on cyclic hydraulic fracturing [J]. Rock and Soil Mechanics, 2019, 40(S1): 109-118.
[5] DING Chang-dong, ZHANG Yang, YANG Xiang-tong, HU Da-wei, ZHOU Hui, LU Jing-jing, . Permeability evolution of tight sandstone under high confining pressure and high pore pressure and its microscopic mechanism [J]. Rock and Soil Mechanics, 2019, 40(9): 3300-3308.
[6] TANG Xiao-wu, LIU Jiang-nan, YANG Xiao-qiu, YU Yue. Theoretical study of dynamic pore water pressure dissipation characteristics of open-hole pipe pile [J]. Rock and Soil Mechanics, 2019, 40(9): 3335-3343.
[7] HOU Hui-ming, HU Da-wei, ZHOU Hui, LU Jing-jing, LÜ Tao, ZHANG Fan, . Thermo-hydro-mechanical coupling simulation method of surrounding rock in high-level radioactive waste repository considering effective meso-thermal parameters [J]. Rock and Soil Mechanics, 2019, 40(9): 3625-3634.
[8] ZHENG Kun, MENG Qing-shan, WANG Ren, WU Wen-juan, . Elastic wave properties of coral reef limestone with different structural types [J]. Rock and Soil Mechanics, 2019, 40(8): 3081-3089.
[9] ZHANG Qiang, LI Xiao-chun, ZHOU Ying-bo, SHI Lu, BAI Bing, . Shear behavior of the Triassic sandstone in Sichuan under high pore pressure of H2O/CO2 conditions [J]. Rock and Soil Mechanics, 2019, 40(8): 3028-3036.
[10] WU Jin-wen, FENG Zi-jun, LIANG Dong, BAO Xian-kai, . Characteristics of granite failure by injecting high-temperature-vapour under uniaxial stress [J]. Rock and Soil Mechanics, 2019, 40(7): 2637-2644.
[11] ZHANG Feng, CHEN Guo-xing, WU Qi, ZHOU Zheng-long. Experimental study on undrained behavior of saturated silt subject to wave loading [J]. Rock and Soil Mechanics, 2019, 40(7): 2695-2702.
[12] ZHAO Ding-feng, LIANG Ke, CHEN Guo-xing, XIONG Hao, ZHOU Zheng-long, . Experimental investigation on a new incremental pore pressure model characterized by shear-volume strain coupling effect [J]. Rock and Soil Mechanics, 2019, 40(5): 1832-1840.
[13] ZHANG Fan, MA Geng, FENG Dan, . Hydraulic fracturing simulation test and fracture propagation analysis of large-scale coal rock under true triaxial conditions [J]. Rock and Soil Mechanics, 2019, 40(5): 1890-1897.
[14] ZHANG Wei, QU Zhan-qing, GUO Tian-kui, SUN Jiang. Numerical simulation of hydraulic fracturing in hot dry rocks under the influence of thermal stress [J]. Rock and Soil Mechanics, 2019, 40(5): 2001-2008.
[15] ZHANG Bo, LI Yao, YANG Xue-ying, ZHU Piao-yang, ZHU Chun-di, LIU Zi-hao, LIU Wen-jie, LUO Zhi-heng, . Design and application of a hydraulic pressure supply device for hydraulic fracturing experiments [J]. Rock and Soil Mechanics, 2019, 40(5): 2022-2028.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] WANG Gang, LI Shu-cai, WANG Ming-bin. Study of stability of anchoring jointed rockmass under seepage pressure[J]. , 2009, 30(9): 2843 -2849 .
[2] LIU Yu-cheng，CAO Shu-gang，LIU Yan-bao. Discussion on some time functions for describing dynamic course of surface subsidence due to mining[J]. , 2010, 31(3): 925 -931 .
[3] LIU En-long. Breakage mechanics for geomaterials: Breakage mechanism of structural blocks and binary-medium model[J]. , 2010, 31(S1): 13 -22 .
[4] YANG Ai-wu，YAN Shu-wang，DU Dong-ju，ZHAO Rui-bin，LIU Ju. Experimental study of alkaline environment effects on the strength of cement soil of Tianjin marine soft soil[J]. , 2010, 31(9): 2930 -2934 .
[5] YANG Jian-min, ZHENG Gang. Classification of seepage failures and opinion to formula for check bursting instability in dewatering[J]. , 2009, 30(1): 261 -264 .
[6] ZHOU Hua，WANG Guo-jin1,，FU Shao-jun，ZOU Li-chun，CHEN Sheng-hong. Finite element analysis of foundation unloading and relaxation effects of Xiaowan Arch Dam[J]. , 2009, 30(4): 1175 -1180 .
[7] YE Fei, ZHU He-hua, HE Chuan. Back-filled grouts diffusion model and its pressure to segments of shield tunnel[J]. , 2009, 30(5): 1307 -1312 .
[8] CHEN Lin, ZHANG Yong-xing, RAN Ke-xin. A method for calculating active earth pressure considering shear stress[J]. , 2009, 30(S2): 219 -223 .
[9] LUO Qiang , WANG Zhong-tao , LUAN Mao-tian , YANG Yun-ming , CHEN Pei-zhen. Factors analysis of non-coaxial constitutive model’s application to numerical analysis of foundation bearing capacity[J]. , 2011, 32(S1): 732 -0737 .
[10] SHI Chong , XU Wei-ya , ZHANG Yu , LI De-liang , LIU He. Study of dynamic parameters for talus deposit based on model of cellular automata[J]. , 2011, 32(6): 1795 -1800 .
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