Results 21 to 30 of about 5,156 (254)

Parameter Determination Method in Analysis of Stratum Deformation Caused by Tunnel Excavation

Advances in Civil Engineering, 2023
Based on the analytical method of formation deformation caused by tunnel excavation proposed by Verruijt and Sagaseta, combined with the basic principles of soil mechanics and elastic mechanics, a method for determining the pending parameters required in the analysis process is proposed.
Xinlong Li, Shiyong Zhao, Dongjiao Cao, Jiale Zhao, Yang Liu, Zhenhui Hu   +5 more
openaire   +2 more sources

The field monitoring experiment of the high-level key stratum movement in coal mining based on collaborative DOFS and MPBX

Scientific Reports, 2022
The deformation and movement characteristics of high-level key stratums in overlying strata are important for estimating ground subsidence and understanding failure characteristics of ultrathick strata during mining.
Xiaozhen Wang, Jianlin Xie, Weibing Zhu, Jialin Xu   +3 more
doaj   +1 more source

Viscoelastoplastic Displacement Solution for Deep Buried Circular Tunnel Based on a Fractional Derivative Creep Model

Advances in Civil Engineering, 2021
Time-dependent deformation of surrounding rock is a common phenomenon for tunnels situated in soft rock stratum or hard rock stratum with high geo-stress.
Yi-Hang Gao, Zhou Zhou, Hang Zhang, Shuang Jin, Wen Yang, Qing-Hua Meng   +5 more
doaj   +1 more source

Field Study on the Waterstop of the Rodin Jet Pile Method in a Water-Rich Sandy Gravel Stratum

Applied Sciences, 2019
Due to the increasing depths of underground urban construction, the surrounding environment and hydrogeological conditions are becoming increasingly complex, and conventional high-pressure rotary jet grouting has become unable to meet construction needs.
Chengli Guan, Yuyou Yang
doaj   +1 more source

Fractional viscoelastic solution of stratum displacement of a shallow tunnel under the surface slope condition

Underground Space, 2023
The unified displacement function (UDF) is presented to describe the deformation behaviours of the tunnel profile along with time under the surface slope condition.
Fanchao Kong, Dechun Lu, Chao Ma, Chenpeng Shen, Xiaodong Yang, Xiuli Du   +5 more
doaj   +1 more source

Analysis of Ground Deformation Caused by Subway Tunnel Excavation in Kunming [PDF]

E3S Web of Conferences, 2021
Research at home and abroad shows that subway excavation often causes soil stress loss, resulting in settlement deformation and horizontal displacement of stratum.
Wei Ping, Wei Liuchuang
doaj   +1 more source

Ground Deformation of Shield Tunneling through Composite Strata in Coastal Areas

Buildings
In order to mitigate ground deformation during shield construction in both upper soft and lower hard strata of coastal areas, a numerical simulation was executed.
Xiong Wu, Jiangbo Xu, Shaowei Wang, Peng Sha, Zemin Han, Xinyu Chen, Sheng Shu, Wei Qiao, Xianglong Zeng   +8 more
doaj   +1 more source

Determination of Supporting Time of Tunnels in the Xigeda Stratum Based on the Convergence-Confinement Method

Applied Sciences, 2023
The mechanical properties of the surrounding rock of the Xigeda stratum are easily affected by water content. In order to obtain the support characteristics of Xigeda strata, the finite difference method was used to obtain the longitudinal deformation of
Zuliang Zhong, Tenglong Tang, Yapeng Li
doaj   +1 more source

Numerical Analysis for Deformation and Stress Distribution around Production Well based on Detailed Modeling for Methane Hydrate Bearing Sediment and Well Structure

Journal of MMIJ, 2018
Depressurization process is regarded as the most effective process for gas recovery method from the viewpoints of gas productivity and economic efficiency among in-situ dissociation processes of Methane Hydrate (MH) existing in marine sediments. However,
Masayo KAKUMOTO, Yasuhide SAKAMOTO, Jun YONEDA, Jun KATAGIRI, Kazuo AOKI, Akira TAKIGUCHI, Aya YASUI, Jiro MORI   +7 more
doaj   +1 more source

Experimental study and evaluation on influence of deep alluvium foundation suffusion on deformation of soil skeleton in foundation of Luding Hydropower Station

Yantu gongcheng xuebao
Suffusion of stratum ① in deep alluvium foundation of Luding Hydropower Station induces water gushing incident. Continuous migration of fine particles may induce skeleton deformation, and then it may threat the safety of Luding Dam, downstream cascade ...
JIN Wei 1, 2, QIU Ziyuan 2, ZHANG Dan 1, 2, XIANG Lei 2, YANG Linjun 3, LUO Yulong 2
doaj   +1 more source