Numerical simulation study on the influence of the ground stress field on the stability of roadways

In order to study the supporting of deep surrounding rock with zonal disintegration tendency, the zonal disintegration phenomenon of deep surrounding rock under three supporting forms is analyzed by the ABAQUS finite element software in this paper, and three supporting forms are un-supporting, bolting and grouting, and combined “Bolting and grouting plus Anchor rope” supporting. The results show that the different effects to zonal disintegration under different supporting forms will occur. Supporting can help to restrain the zonal disintegration of the reinforcement part advantageously, and also lower rupture degree of zonal disintegration and reduce the size of rupture zone. Meanwhile, the stability of surrounding rock is improved. But zonal disintegration may occur outside reinforcement part under greater ground stress. The results are great importance to a better understanding of the deep roadway supporting.

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Numerical Simulation Study of the Stability of Laser-Driven Shock Waves

Acta Optica Sinica ◽

10.3788/aos201535.s214008 ◽

2015 ◽

Vol 35 (s2) ◽

pp. s214008

Author(s):

王薇 Wang Wei ◽

袁瑞玚 Yuan Ruiyang ◽

叶萍 Ye Ping

Keyword(s):

Numerical Simulation ◽

Shock Waves ◽

Simulation Study ◽

The Stability

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Stabality Analysis of Deep Roadway Based on Coupled Thermo-Hydro-Mechanical Behaviors

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.594-597.2564 ◽

2012 ◽

Vol 594-597 ◽

pp. 2564-2568

Author(s):

Qi Feng Guo ◽

Fen Hua Ren ◽

Zhao Cai Zhang

Keyword(s):

Temperature Field ◽

Numerical Model ◽

Stress Field ◽

Constitutive Relation ◽

Mechanical Behaviors ◽

Seepage Field ◽

Mechanical Equation ◽

Rock Temperature ◽

Ground Stress ◽

The Stability

In order to research the stability of excavation in deep mines under high ground stress, high rock temperature and high karst hydraulic, the interaction of stress field, seepage field and temperature field are discussed through basic constitutive relation, seepage equation, thermometer equation and coupled thermo-hydro-mechanical equation. A numerical model was built to simulate the excavation of deep roadway. The result shows that the simulated ground stress based on three fields coupled is much closer to the field measured value and the change of stress and displacement caused by the excavation are limited which is about same as the later monitoring.

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Numerical Simulation of Three-Dimensional Ground Stress Field on XinChang Gas Reservoir in the West Sichuan

Physical and Numerical Simulation of Geotechnical Engineering ◽

10.5503/j.pnsge.2011.03.010 ◽

2011 ◽

pp. 46-51

Author(s):

Kaijun TONG ◽

Yumin SHAN ◽

Fengjun ZHOU

Keyword(s):

Numerical Simulation ◽

Stress Field ◽

Three Dimensional ◽

The West ◽

Gas Reservoir ◽

Ground Stress

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Numerical Simulation Study on Evolution Characteristics of Stress Field and Fracture Field after Hard Roof Pre-Cracking and Weakening

Mine Engineering ◽

10.12677/me.2020.83048 ◽

2020 ◽

Vol 08 (03) ◽

pp. 380-389

Author(s):

智勇马

Keyword(s):

Numerical Simulation ◽

Stress Field ◽

Simulation Study ◽

Hard Roof ◽

Evolution Characteristics

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The Study of Coupling Law of Stress Field / Seepage Field in Impermeable Stratum Medium

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.171-172.125 ◽

2010 ◽

Vol 171-172 ◽

pp. 125-130

Author(s):

Jing Yan Li

Keyword(s):

Plastic Deformation ◽

Porous Medium ◽

Stress Field ◽

Rock Mechanics ◽

Distribution Patterns ◽

Seepage Field ◽

Field Coupling ◽

Ground Stress ◽

The Stability ◽

Element Technique

According to the basic theory of rock mechanics, fluid mechanics in porous medium, geologic mechanics, calculated mechanics and fluid-solid coupling seepage, a mathematical and numerical model of seepage field and stress field coupling is developed in porous medium and a computer program is designed with the method of finite element technique. The Coupling Law of depressurizing exploitation Seepage field /Stress field in porous medium is studied. By the method of numerical simulation the variation law of stress-strain with time and space around borehole of impermeable rock medium, variety law of rock physical properties parameters is studied. It can be seen from result that development and deformation of borehole elastic area mainly affected by ambiequal ground stress value, difference of ambiequal ground stress and rock material properties so on. But for the nonlinear rock medium, material plastic deformation is a key mechanics parameter closely related to distribution patterns of borehole stress. Therefore, based on rock mechanics experiment，it is necessary to further consider influence of plastic deformation mechanism to the stability of the borehole.

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