Results 71 to 80 of about 2,183,848 (145)

Influence Factors and Sensitivity Analysis on Material-Stress-Induced Large Deformation of Deep Underground Engineering in Soft Rockmass

Buildings
During the construction of deep underground soft rock strata, the adverse effects of high geostress, unfavorable geological conditions, and excavation disturbances are significant, easily triggering Material-Stress-Induced (MSI) large deformation ...
Yue Li, Yang Yu, Lu Li, Jiaqi Guo, Bendong Qin   +4 more
doaj   +1 more source

Surrounding rock mass stability characteristics of large underground caverns during the construction period under high in-situ stresses condition

工程科学与技术, 2013
:High in-situ stress and low rock mass strength are the main characteristics of underground powerhouse of JinpingⅠhydropower station, surrounding rock stability problem is prominent during construction period.
Hu wei, Duan Ru-jian, Yang Xing-guo, Hu Xiang-wei, Zhou Jia-wen   +4 more
doaj  

A new deformable cable for rock support in high stress tunnel: Steel pipe shrinkable energy-absorbing cable

International Journal of Mining Science and Technology
High stress in surrounding rock will lead to serious problems, e.g., rock burst in hard rock and large deformation in soft rock. The applied support system under high in-situ stress conditions should be able to carry high load and also accommodate large ...
Xuezhen Wu, Mingzhu Zhao, Qing Ye, Yujing Jiang, Tao Deng, Hanfang Zheng, Gang Wang, Zhenchang Guan   +7 more
doaj   +1 more source

Research on large deformation mechanism of deep roadway with dynamic pressure

Energy Science & Engineering, 2020
In this paper, the large deformation mechanism of deep dynamic pressure roadway is studied from the perspective of the formation and development of plastic zone, and creep and damage of rock mass.
Lei Fan, Weijun Wang, Chao Yuan, Wenqing Peng   +3 more
doaj   +1 more source

Study on the Settlement and Deformation Characteristics of Surrounding Rock of Loess Tunnel

Academic Journal of Science and Technology
There is a water culvert with masonry structure in the mountain of Hanguguan Tunnel. Soil deformation caused by tunnel excavation leads to channel cracking. On the one hand, channel water infiltration leads to loess tunnel collapse, which can easily cause engineering accidents and delay the construction period.
Zunzun Du, Gaolei Hu
openaire   +1 more source

Analysis of Control Technology for Large Deformation of a Geological Bedding Bias Tunnel with Weakly Cemented Surrounding Rock

, 2023
The Baishitou Tunnel of the Dali–Lincang railway project is a weakly cemented surrounding rock tunnel with geological bedding bias. The deformation of the surrounding rock on the side with the greatest stress is nearly 1 m, which seriously affects ...
Jinmao Ju, Hongqian Hu, Chengfang Shan, Yinjian Hang, Honglin Liu, Hongzhi Wang   +5 more
core   +1 more source

Influence of Deviatoric Stress on the Deformation and Damage Evolution of Surrounding Rock under Unloading Conditions

, 2020
The study of the deformation and damage evolution behaviour of surrounding rock under excavation unloading conditions is of vital importance for a deep understanding of the mechanism of roadway failure.
Gongyu Hou, Haoyong Jing, Jinxin Tan, Jinping Liang, Yongkang Zhang, Xi Yang, Xin Xie   +6 more
core   +1 more source

Key Factors Affecting the Deformation and Failure of Surrounding Rock Masses in Large-Scale Underground Powerhouses

, 2020
The stability of the surrounding rock masses of underground powerhouses is always emphasized during the construction period. With the general trends toward large-scale, complex geological conditions and the rapid construction progress of underground ...
An-chi Shi, Hai-bo Li, Jia-wen Zhou, Meng Wang, Jin-qi Han   +4 more
core   +1 more source

Study on the aging stability of the surrounding rock of a surge-shaft group based on three dimensional damage rheological theory

工程科学与技术, 2017
:The surrounding rock of surge-shaft in proposed Hydropower Station contains mainly quartz mica schist, After exploration and laboratory tests, It found that the rock belongs to soft rock ,which has obvious schistosity structure and typical transverse ...
yangyirong, XIE Hong-qiang, XIAO Ming-li, ZHUO Li, HE Jiang-da   +4 more
doaj  

Surrounding rock control technology of gob-side entry retaining in deep high mining face

Meikuang Anquan
Under the influence of multiple mining influences, the mining pressure is more intense and the surrounding rock deformation is large, which is easy to cause the surrounding rock instability of gob-side entry retaining in fully mechanized mining face.
Junhu ZHANG, Zhenjiang CHEN, Xiancheng GAO, Lei ZHANG, Jianhua LI, Pengjiang DENG   +5 more
doaj   +1 more source