Results 21 to 30 of about 167,709 (298)

Improved Protodyakonov’s Method of the Tunnel Surrounding Rock Pressure under the Seepage Condition of Weak Interlayer

Geofluids, 2022
A reasonable support scheme is the main factor to be considered when constructing tunnels, and it is essential to accurately calculate the surrounding rock pressure of tunnels.
Jing Hu, Jiafeng Xiao, Zhuanyun Yang, P. Xie, Haijia Wen   +4 more
semanticscholar   +2 more sources

Analysis of Plastic Zone and Pressure Variance Features of Surrounding Rock of High-Altitude Macker Tunnel: A Case Study in Jiangluling Macker Tunnel in Qinghai

Advances in Civil Engineering, 2021
Due to the special mechanical properties of macker rock, problems may be caused easily if the pressure of the surrounding rock calculated from the standard empirical equation is used in the structural design of tunnel support, such as obviously ...
Xiaojun Ma, Hongyan Guo, Juyi Hu, Shuang Cai, Liang Cheng, Danfeng Zhang   +5 more
doaj   +2 more sources

Approximate solution of plastic zone boundary of surrounding rock of circular roadway considering axial stress [PDF]

Meitan kexue jishu, 2023
In order to study the boundary of plastic zone of surrounding rock of a roadway considering axial stress, based on Mohr-Coulomb criterion, the implicit equation of plastic zone boundary of surrounding rock of circular roadway considering axial stress is ...
Hongtao LIU, Zijun HAN, Xiaofei GUO, Guangdong ZHOU, Shengjie WEI, Zhou HAN, Xiaogang CHEN, Wencong CHENG   +7 more
doaj   +2 more sources

Calculation of Surrounding Rock Pressure of Undercut Subway Station Based on Multi-Factor Affecting Pressure Arch Theory

Engineering, 2020
The formation mechanism of surrounding rock pressure in large-section tunnels of underground excavation is still unclear. The traditional methods for calculating surrounding rock pressure have certain limitations. Based on the theory of pressure arch and
Xiaoguang Jin
exaly   +2 more sources

Influence of Support Parameter and Excavation Methods on Statistical Distribution Characteristics of Surrounding Rock Pressure in Shallow-Buried Metro Tunnel

Advance in Civil Engineering, 2023
For large-spanshallow-buried tunnels in composite strata of urban metro, the study on the distribution characteristics of surrounding rock pressure is a necessary prerequisite for the reliability analysis of tunnel structure.
Song Chen, Zhao Yang, Yibo Zheng, Ying Yuan, Jinglai Sun, Liufang Li   +5 more
semanticscholar   +2 more sources

The Expression of Seismic Surrounding Rock Pressure for a Shallow Tunnel Is Derived Using the Pseudostatic Method

Advances in Civil Engineering, 2021
Terzaghi developed a generalized expression of the vertical surrounding rock pressures of shallow tunnels by considering the limit equilibrium of soil masses.
Zhengde Wei, Yanpeng Zhu
doaj   +2 more sources

Study on surrounding rock pressure of deep jointed rock tunnel based on pressure arch theory

Journal of Hebei University of Science and Technology
To study the calculation method of rock pressure in jointed rock tunnels, based on the theory of tunnel pressure arch, the influence of rock hardness, integrity, and shear strength of structural planes on tunnel pressure arch was analyzed through discrete element numerical simulation.
Xiang DING, Yong LIU, Zhiming HAN, Jieda ZHANG, Haobo FAN, Ye TIAN, Kaimeng MA   +6 more
openaire   +3 more sources

Creep Mechanical Properties of Granite under Combined Axial Compression and Water Pressure and Support Characteristics of Surrounding Rock

Advances in Materials Science and Engineering, 2022
Granite is a common brittle rock material in underground surrounding rock, such as Yebatan Hydropower Station. The underground cavern of Yebatan Hydropower Station has characteristics of large span, high ground stress, fault development, and abundant ...
Xiaolong Li, Chong Zhang, Jianhua He, Xingfu Deng   +3 more
doaj   +2 more sources

Calculation of Surrounding Rock Pressure Design Value and the Stability of Support Structure for High-Stress Soft Rock Tunnel

Buildings
With the comprehensive implementation of the “Belt and Road” initiative and the Western Development Strategy, the scale of tunnel construction has been continuously expanding, with many tunnels being built in high ground stress and fractured soft rock ...
Mingyi Wang, Yongqiang Zhou, Yongliang Cheng, Xiaodong Fu, Chen Xu, Jiaming Wu   +5 more
doaj   +3 more sources

Research on Hydraulic Fracturing Pressure Relief Technology in the Deep High-Stress Roadway for Surrounding Rock Control

Advances in Civil Engineering, 2021
With the increase of mining depth in underground engineering, deep ground pressure has an extremely unfavorable impact on safety production and the economic benefits of coal mines and the control of the roadway stability in deep mines are gradually ...
Wen Zhai, Yachao Guo, Xiaochuan Ma, Nailv Li, Peng Zhang, Kun Ma, Yuanxin Jing, Hong Yu, Xiaotong Li   +8 more
doaj   +2 more sources