›› 2012, Vol. 33 ›› Issue (7): 2133-2141.

• Geotechnical Engineering • Previous Articles     Next Articles

Displacement back analysis of parameter field of blasting excavation damaged zone around openings considering spatial effect

LIU Hui-bo1, 2, XIAO Ming1, 2, ZHANG Zhing-guo1, 2, CHEN Jun-tao1, 2   

  1. 1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; 2. Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering of Ministry of Education, Wuhan University, Wuhan 430072, China
  • Received:2011-08-24 Online:2012-07-11 Published:2012-07-13

PDF (Chinese)

1586

Abstract: Blasting excavation damaged zone (EDZ) is regarded as a heterogeneous and unsteady three-dimensional disturbed field evolving with the excavation progress; and the mechanical parameters in EDZ are identified as a parameter field of time-space evolution characteristics. A displacement back analysis method is proposed for parameter field identification of the EDZ around openings in practical working state, considering the spatial effect of blasting disturbance and real deformation response of rock mass. Based on the spatial displacement field obtained by space interpolation of local monitoring displacements, by analyzing the deformation disturbance mechanism of the surrounding rock, a numerical model for parameter field of rock mass deformation modulus in EDZ is put forward; and the applicability and parameters sensibility are further analyzed. Taking the deformation modulus for instance and combining the measured displacement of surrounding rock, the dynamic implementation progress of the displacement back analysis for parameter field is introduced in detail. Finally, the method is applied to the parameter field identification and dynamic feedback analysis and prediction of stability assessment of the surrounding rock during construction of Xiluodu underground caverns. It is shown that the method is reasonable and effective and of significant engineering applicability and practicality for fast feedback analysis of monitoring and stability assessment during construction of large-scale underground caverns.

Key words: underground cavern, parameter field identification, excavation damaged zone, deformation modulus, displacement back analysis, spatial effect

CLC Number: 

  • U 453.2
[1] LIU Nian-wu, CHEN Yi-tian, GONG Xiao-nan, YU Ji-tao, . Analysis of deformation characteristics of foundation pit of metro station and adjacent buildings induced by deep excavation in soft soil [J]. Rock and Soil Mechanics, 2019, 40(4): 1515-1525.
[2] LI Lian-xiang, LIU Jia-dian, LI Ke-jin, HUANG Heng-li, JI Xiang-kai, . Study of parameters selection and applicability of HSS model in typical stratum of Jinan [J]. Rock and Soil Mechanics, 2019, 40(10): 4021-4029.
[3] SUN Ming-she, MA Tao, SHEN Zhi-jun, WU Xu, WANG Meng-shu，. Study of lining sharing surrounding rock pressure in composite lining structure [J]. , 2018, 39(S1): 437-445.
[4] WANG Shao-jie, LU Ai-zhong, ZHANG Xiao-li. Analytical method of displacement back analysis for horseshoe tunnel excavated in transverse isotropic rock mass [J]. , 2018, 39(S1): 495-504.
[5] CUI Zhen, SHENG Qian, LENG Xian-lun, LUO Qing-zi,. Control effect of large geological discontinuity on seismic response and stability of underground rock caverns [J]. , 2018, 39(5): 1811-1824.
[6] WANG Chun, TANG Li-zhong, CHENG Lu-ping, CHEN Yuan, LIU Tao, WEI Yong-heng, . Dynamic characteristics of skarn subjected to frequent dynamic disturbance under combined action of high axial compression and confining pressure [J]. Rock and Soil Mechanics, 2018, 39(12): 4537-4546.
[7] TIAN Mao-lin, XIAO Hong-tian, YAN Qiang-gang,. Displacement back analysis of rock parameters of Hoek-Brown criterion using nonlinear regression method [J]. , 2017, 38(S1): 343-350.
[8] LIU Guo-qing, XIAO Ming, ZHOU Hao. Analysis of mechanical characteristics and anchoring mechanism of prestressed anchor cable in underground caverns [J]. , 2017, 38(S1): 439-446.
[9] XU Nian-chun, WU Tong-qing, FENG Qiao-mu, WANG Kui, SHAO Wei-feng，. Research on flexible bearing plate test for deformation modulus of soil [J]. , 2017, 38(S1): 496-700.
[10] WANG Xin-zhi, WANG Xing, LIU Hai-feng, MENG Qing-shan, ZHU Chang-qi,. Field test study of engineering behaviors of coral reef foundation [J]. , 2017, 38(7): 2065-2070.
[11] FU Gui-jun, ZHANG Si-yuan, ZHANG Yu-jun. A rheological model for dual-pore-fracture rock mass and its application to finite element analysis of underground caverns [J]. , 2017, 38(2): 601-609.
[12] ZHAO Guo-yan, LIANG Wei-zhang, WANG Shao-feng, HONG Chang-shou. Prediction model for extent of excavation damaged zone around roadway based on dimensional analysis [J]. , 2016, 37(S2): 273-278.
[13] ZHANG Ting-ting, LI Jiang-shan, WANG Ping, LI Zhen-ze. Experimental study of stress-strain properties of lead-contaminated soils treated by magnesium phosphate cement [J]. , 2016, 37(S1): 215-225.
[14] DENG Jian, XIAO Ming, XIE Bing-bing, . Analysis of mechanical characteristic and optimization of initial tensile tonnage of prestressed anchor cable [J]. , 2016, 37(8): 2359-2365.
[15] ZHANG Chang-guang, ZENG Kai-hua, . Comparisons of spatial-effect approaches for tunnel excavation using convergence-confinement method [J]. , 2016, 37(5): 1417-1424.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] YANG Li-guo，LUO Ya-sheng，LI Yan，WANG Zhi-jie. Research on effect of initial stress conditions on dynamic strength of compacted loess[J]. , 2010, 31(1): 87 -91 .
[2] LI Ke，SHI Bin，TANG Chao-sheng，WEI Guang-qing，WANG Bao-jun. Feasibility research on soil deformation monitoring with distributed optical fiber sensing technique[J]. , 2010, 31(6): 1781 -1785 .
[3] ING Zhi-dong, GUO Yong-chun, QIU En-xi, ZHENG Li-ning. Centrifuge test of new pile-plate structure embankment settlement of soft soil of high-speed railway[J]. , 2010, 31(8): 2565 -2569 .
[4] MA Qiang, ZHENG Jun-jie, ZHANG Jun, ZHAO Dong-an. Mechanism analysis and numerical simulation on load reduction for culvert beneath high filling[J]. , 2010, 31(S1): 424 -429 .
[5] LIU Jia, WANG Dong. Tension resistance and suction of plate anchor foundation in normally consolidated clay[J]. , 2009, 30(3): 735 -740 .
[6] SHEN Hai-chao, CHENG Yuan-fang, ZHAO Yi-zhong, ZHANG Jian-guo, XIA Yuan-bo. Research on in-situ stresses and borehole stability of coal seam in Jingbian gas field[J]. , 2009, 30(S2): 123 -126 .
[7] ZHOU Yang, ZHOU Guo-qing. Semi-analytical solution for temperature field of one-dimensional soil freezing problem[J]. , 2011, 32(S1): 309 -0313 .
[8] WANG Tong-rui , ZHANG De-xuan , WANG Xu-dong , GUO Qing-lin. Experimental study of infrared imaging technology detecting earthen ruins soil reinforced by potassium silicate(PS)[J]. , 2011, 32(S1): 630 -0635 .
[9] HUO Jun-shuai, CHEN Tao, GONG Quan-mei, ZHOU Shun-hua. Confined water pumping test of deep-large-irregular foundation pit with complex surrounding conditions[J]. , 2011, 32(S2): 268 -273 .
[10] ZHI Le-peng , XU Jin-yu , LIU Zhi-qun , LIU Shi , CHEN Teng-fei . Research on ultrasonic characteristics and Brazilian splitting-tensile test of granite under post-high temperature[J]. , 2012, 33(S1): 61 -66 .
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