锚固的双重孔隙–裂隙岩体流变模型及其地下洞室二维有限元分析

doi:10.13722/j.cnki.jrme.2017.0734

Abstract
Figure/Table
References (18)
Related Citation (0)

Download: PDF (519 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract

Aiming at Nishihara model to describe the rheological characteristics of dual-pore-fracture media suggested by the author，a corresponding bolted body model was established，and the mathematical expressions were given for distributing uniformly the elastic modulus and shearing strength of bolt material into the bolted body. Simulating a hypothetical rectangular underground cavern，the 2D FEM analysis were carried out on the cases of cavern without bolting and with bolted body elements as well as with bar elements，respectively，and the displacements，stresses and plastic zones in the surrounding rock mass were analyzed and compared. The results show that the systematic bolting has certain restriction on the displacements of cavern boundary，but this effect is not proportional to the bolt length，and it is more obvious for the case with bolted body elements than for that with bar elements；there are obvious stress concentration phenomena in the bolted zones，and the distributions and values of stresses in the surrounding rock also have some changes with increase of the bolt length；the systematic bolting makes the plastic zones in the surrounding rock decrease obviously，but this effect also is not proportional to the bolt length；using bolted body elements and bar elements for the bolts with same length respectively，the areas of plastic zones obtained are close to each other，but the distribution shapes have some differences.

Key words： numerical analysis dual-pore-fracture medium viscoelastic-viscoplasticity bolted body model underground cavern finite element method(FEM) analysis

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	ZHANG Yujun1
	ZHANG Weiqing2

Cite this article:

ZHANG Yujun1,ZHANG Weiqing2. A bolted rheological model for dual-pore-fracture rock mass and 2D FEM analyses for underground cavern[J]. , 2018, 37(S1): 3300-3309.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2017.0734 OR https://rockmech.whrsm.ac.cn/EN/Y2018/V37/IS1/3300

[1]	于学馥，郑颖人，刘怀恒，等.地下工程围岩稳定分析[M].北京：煤炭工业出版社，1983：554-619.(YU Xuefu，ZHENG Yingren，LIU Huaiheng，et al. Stability analysis of surrounding rock in underground engineering[M]. Beijing：Coal Industry Press，1988： 554-619.(in Chinese))
[2]	Itasca Consulting Group，Inc..Manual of FLAC3Dversion 3.0[M]. Minneapolis，USA：[s. n.]，2005：61-80.
[3]	Itasca Consulting Group，Inc.Manual of 3DEC version 5.0[M]. Minneapolis，USA：[s. n.]，2013：15-28.
[4]	肖明，叶超，傅志浩. 地下隧洞开挖和支护的三维数值分析计算[J]. 岩土力学，2007，28(12)：2501-2505.(XIAO Ming，YE Chao，FU Zhihao. Three-dimensional numerical simulation and analysis of excavation and support in underground tunnel[J]. Rock and Soil Mechanics，2007，28(12)：2501-2505.(in Chinese))
[5]	李新平，王涛，宋桂红，等. 锚固层状岩体的复合加固理论与数值模拟试验分析[J]. 岩石力学与工程学报，2006，25(增2)：3654-3660.(LI Xinping，WANG Tao，SONG Guihong，et al. Study on composite anchoring theory and numerical simulation test on layered rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(Supp.2)：3654-3660.(in Chinese))
[6]	张玉军，刘谊平. 锚固正交各向异性岩体的三维弹塑性有限元分析[J]. 岩石力学与工程学报，2002，21(8)：1115-1119.(ZHANG Yujun，LIU Yiping. 3D elasto-plastic FEM analysis for bolted orthotropic rock mass[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(8)：1115-1119.(in Chinese))
[7]	林世胜，朱维申. 锚杆对洞周黏弹岩体应力状态的影响[J]. 岩土工程学报，1983，5(3)：12-27.(LIN Shisheng，ZHU Weishen. The effects of bolts on the stress-state in visco-elastic rock masses around an excavation[J]. Chinese Journal of Geotechnical Engineering，1983，5(3)：12-27.(in Chinese))
[8]	张玉军，孙钧. 锚固岩体的流变模型及计算方法[J]. 岩土工程学报，1994，16(3)：34-45.(ZHANG Yujun，SUN Jun. Rheological models and calculation methods for bolted rock masses[J]. Chinese Journal of Geotechnical Engineering，1994，16(3)：34-45.(in Chinese))
[9]	陈胜宏，EGGER P，熊文林. 加锚节理岩体流变模型及三维弹黏塑性有限元分析[J]. 水利学报，1998，(9)：41-47.(CHEN Shenghong，EGGER P，XIONG Wenlin. Rheological model and three dimensional elasto-viscoplastic finite element analysis of jointed rock masses reinforced by bolts[J]. Journal of Hydraulic Engineering，1998，(9)：41-47.(in Chinese))
[10]	BOBET A. Elastic solution for deep tunnel. Application to excavation damage zone and rockbolt support[J]. Rock Mechanics and Rock Engineering，2009，42(2)：147-174.
[11]	王华宁，曾广尚，蒋明镜. 黏弹-塑性岩体中锚注与衬砌联合支护的解析解[J]. 工程力学，2016，33(4)：176-187.(WANG Huaning，ZENG Guangshang，JIANG Mingjing. Analytical solutions for combined bolt-grouting and lining supporting in viscoelastic-plastic rock mass[J]. Engineering Mechanics，2016，33(4)：176-187.(in Chinese))
[12]	符贵军，张思渊，张玉军. 一种双重孔隙-裂隙岩体流变模型及其在地下洞室有限元分析中的应用[J]. 岩土力学，2017，38(2)：601-609.(FU Guijun，ZHANG Siyuan，ZHANG Yujun. A rheological model for dual-pore-fracture rock mass and its application to finite element analysis of underground caverns[J]. Rock and SoilMechanics，2017，38(2)：601-609.
[13]	周维垣. 高等岩石力学[M]. 北京：水利水电出版社，1990：116-119.(ZHOU Weiyuan.Advanced rock mechanics[M]. Beijing：China Water Power Press，1990：116-119.(in Chinese))
[14]	孙钧，汪炳鑑.地下结构有限元法解析[M].上海：同济大学出版社，1988：167-171.(SUN Jun，WANG Bingjian.Finite element analysis of underground structure[M].Shanghai：Tongji University Press，1988：167-171.(in Chinese))
[15]	OWEN D，HINTON E. Finite element in plasticity：theory and practice[M]. Swansea U. K.：Pineridge Press Limited，1980：220-221.
[16]	LADE P．Modeling failure in cross-anisotropic frictional materials[J]. International Journal of Solids and Structures，2007，44(16)：5146-5162.
[17]	张玉军，朱维申. 三峡工程船闸高边坡锚固方案的平面有限元计算[J]. 岩土工程学报，1997，19(1)：70-74.(ZHANG Yujun，ZHU Weishen. 2D finite element calculation of anchorage scheme for shiplockhigh slope of Three Gorges Project[J]. Chinese Journal of Geotechnical Engineering，1997，19(1)：70-74.(in Chinese))
[18]	周创兵，於三大. 论岩体表征单元体积REV—岩体力学参数取值的一个基本问题[J]. 工程地质学报，1999，7(4)：332-336.(ZHOU Chuangbing，YU Sanda. Representative elementary volume REV—a fundamental problem for selecting the mechanical parameters of jointed rock mass[J]. Journal of Engineering Geology，1999，7(4)：332-336.(in Chinese))