Results 211 to 220 of about 19,664 (248)

Effect of Borehole Positions and Depth on Pressure Relief of Cavern Surrounding Rock Mass

Geotechnical and Geological Engineering, 2021
As the development scale and depth increasing, the frequency and intensity of rock burst and other surrounding rock dynamic disasters are also increasing, which seriously affects the safety construction and operation of cavern engineering. At present, one of the most commonly used methods to control rock burst risk is use borehole pressure relief ...
Tao Xu
exaly   +2 more sources

A new method to determine the surrounding rock pressure in twin tunnels with small clear spacing

Tunnelling and Underground Space Technology
Guowen Xu, Jun Wang
exaly   +2 more sources

FBG Earth Pressure Sensors Applied in Surrounding Rock Pressure of Tunnel

Applied Mechanics and Materials, 2013
During the period of tunnel excavation, shoring, forming and long-term operation, stress changes of tunnel surrounding rock are complex, the real-time monitoring of surrounding rock pressure is the key factor in ensuring long-term stability in tunnel.
Zhou Chun Cai, Chuan Li, Yuan Yu Guan, Wu Fen Chen, Li Jun Guo, Fu Yun Chen, Zhen Gang Zhao, Tao Xie   +7 more
openaire   +1 more source

Calculation of Surrounding Rock Pressure on Multi-Arch Tunnel

International Conference on Transportation Engineering 2009, 2009
It is the key to design reasonably how to calculate pressure of surrounding rock on multi-arch tunnel in load structure method. At present, calculation of pressure of surrounding rock on multi-arch tunnel in current "Code for Design of Road Tunnel" recurs to "Code of Design on Tunnel of Railway".
Zhengguo Zhu, Minglei Sun, Mingzhang Chen   +2 more
openaire   +1 more source

Pressure Relaxation in a Hole Surrounded by a Porous and Permeable Rock

Combustion, Explosion and Shock Waves, 2002
The problem of explosion in a hole surrounded by a porous medium is considered. Integral equations describing pressure relaxation in the hole due to gas filtration into the surrounding porous space are obtained within the framework of plane one-dimensional, radial, and spherical formulations.
V. Sh. Shagapov, G. Ya. Khusainova, I. G. Khusainov, R. N. Khafizov   +3 more
openaire   +1 more source

Elastoplastic Analysis of Surrounding Rocks of the Pressure Tunnel

Applied Mechanics and Materials, 2013
According to the triple shear unified yield criterion, the mechanical behavior of the pressure tunnel was put forward. The calculation formulas of the radius of plastic zone were deduced with considerations of the effects of the intermediate principal stress.
openaire   +1 more source

Pressure Relaxation in a Hole Surrounded by Porous and Permeable Rock in Hole Pressure Tests with Gas Injection

Journal of Applied Mechanics and Technical Physics, 2006
The pressure testing of a hole in porous and permeable rock by gas injection is considered. An integral equation for the hole pressure relaxation is obtained whose numerical and analytical solutions describe the dependence of the relaxation time of hole pressure on the reservoir properties of the surrounding porous rock as well as on the initial gas ...
Shagapov, V. Sh., Khusainov, I. G., Khafizov, R. M.   +2 more
openaire   +1 more source

A new fracture permeability model: Influence of surrounding rocks and matrix pressure

Journal of Petroleum Science and Engineering, 2020
Abstract An appropriate fracture permeability model needs to include terms that characterize the effects of surrounding rocks and varying matrix pore pressure. This paper describes the use of Eshelby's inhomogeneity theory to derive equations that can be used to predict fracture permeability behavior for different shapes of reservoirs whose elastic ...
Peng Yu, Yuetian Liu, Jun Wang, Chuixian Kong, Wenhuan Gu, Liang Xue, Ziyan Cheng, Long Jiang   +7 more
openaire   +1 more source

The Surrounding Rock of Deep Borehole Pressure Relief and Let the Pressure Bolt Coupling Analysis

Applied Mechanics and Materials, 2013
Roadway borehole pressure relief and let the pressure anchor combined support technology were based on using the new pressure high strength bolt instead of ordinary bolt ,Combined with the borehole pressure relief principle, aim at releasing high stress of surrounding rock of roadway ,Complying with the deformation characteristics of supporting ...
Shu Guang Zhang, Long Chen, Hong Yu Jia
openaire   +1 more source

Study on Stability of Surrounding Rock in Shallow Tunnel under Unsymmetrical Pressure

Applied Mechanics and Materials, 2013
Both of the stress field and deformation are unsymmetrical for shallow tunnel under unsymmetrical pressure and geological disaster such as collapse is easily to take place. This brings about troubling problems to both design and construction. In this paper, a case of Hongshigou tunnel is studied.
Su Chao Xu, T. Y. Liu, C.Y. Jin
openaire   +1 more source