Results 71 to 80 of about 16,972 (255)

Analysis of squeezing‐induced failure in a water tunnel and measure of rehabilitation: A case study of Tishreen tunnel, Syria

Deep Underground Science and Engineering, Volume 4, Issue 3, Page 498-510, September 2025.
Different failure modes observed in Tishreen tunnel include Floor heave, wall spalling, crashing of slab, and lining convergence reaching the failure limit. Abstract Squeezing phenomena can lead to severe loads in deep tunnels, especially in the presence of a low ratio of surrounding rock strength to overburden pressure.
Mohannad Mhanna, Hussein Hadi Hussein
wiley   +1 more source

Preparing Shotcrete Materials Applied to Roadways Using Gangue Solid Wastes: Influences of Mix Proportions of Materials on the Mechanical Properties

Applied Sciences
Coal gangue is a waste product commonly produced during coal mining. Using gangue as a replacement for conventional aggregates in shotcrete applied to underground roadways is a feasible approach to promote the resource utilization of gangue solid waste ...
Meng Li, Shihao Xing, Yang Zhao, Xiaobao Luo, Linlin Xie, Chunhui Xie   +5 more
semanticscholar   +1 more source

Compressed air and hydrogen storage experimental facilities for sustainable energy storage technologies at Yunlong Lake Laboratory (CAPABLE)

Deep Underground Science and Engineering, Volume 4, Issue 3, Page 341-353, September 2025.
Construction of compressed air and hydrogen storage experimental facilities for sustainable energy storage technologies at Yunlong Lake Laboratory (CAPABLE) has started. At CAPABLE, examination of composite structure design, advancement of material development, and design of a monitoring and early warning system in deep underground environments can be ...
Xiaozhao Li, Yukun Ji, Kai Zhang, Chengguo Hu, Jianguo Wang, Lixin He, Lihua Hu, Bangguo Jia   +7 more
wiley   +1 more source

Quantification of the effects of thin spray-on liner application on shotcrete tensile strength [PDF]

, 2015
In underground and surface excavations, rock mass instability often occurs, and one method of remedying this is to spray support liners onto the unstable rock surfaces.
Masethe, Richard
core  

Negotiation of poor ground in an undersea tunnel [PDF]

, 2016
The 2.65 km Gwithian outfall tunnel formed part of the tunnelling operations under the 'Clean Sweep' sewage/sewerage distribution system upgrade within the South West Region during the 1990's.
Coggan, JS, Yelland, RS
core   +1 more source

Failure Behavior of Tunnel Inverted Arch Structure in Carbonaceous Slate Stratum: A Case Study

Engineering Reports, Volume 7, Issue 9, September 2025.
This study systematically examines the failure mechanisms of tunnel inverted arch structures embedded in carbonaceous slate strata through extended finite element modeling. The analysis demonstrates a positive correlation between dilatancy angle magnitude and crack pattern.
Yiding Zhao, Hua Zhu, Guo Zhou
wiley   +1 more source

The Rise and Fall of The Thin Concrete Shell [PDF]

, 2012
Concrete was a popular material choice that stretched the imagination of building designers over past decades. This material that imbued notions of plasticity and flow, sets innovative ideals soaring with hope in the postwar landscape, seen as the ...
Tang, Gabriel
core  

Study on the Hierarchical Grouting Reinforcement Control of Low Permeability Surrounding Rocks of Deep Roadway

Energy Science &Engineering, Volume 13, Issue 9, Page 4603-4614, September 2025.
Mechanism and Application of Hierarchical Grouting in Low‐Permeability Surrounding Rocks ABSTRACT To solve the problem of grouting reinforcement of low permeability argillaceous surrounding rocks of deep roadway, the zonal failure characteristics of the surrounding rock and the mechanism and technology of hierarchical grouting reinforcement were ...
Tongqiang Xiao, Yonghui Ren, Huaizhen Li, Wenlong Shen, Housheng Jia, Shuaishuai Yue, Fayi Liu   +6 more
wiley   +1 more source

Pore structure characteristics of admixture shotcrete and its quantitative relationship with mechanical properties in high geothermal environment

Journal of Materials Research and Technology
The high geothermal environment during tunnel construction leads to the abnormal porosity and decreased mechanical properties of shotcrete, but its degradation mechanism is still unclear.
Wei Wang, Shaohui Zhang, Yan Wang, Jian Yuan, Ditao Niu   +4 more
doaj   +1 more source

Research on Grouted Steel Pipe Supports Roof Cutting and Gob‐Side Entry Retaining Support Technology for Fully‐Mechanized Caving Face

Energy Science &Engineering, Volume 13, Issue 8, Page 3824-3839, August 2025.
ABSTRACT Aiming at the roof control challenges of gob‐side entry retaining in fully mechanized top‐coal caving faces, traditional concrete‐filled steel tube (CFST) support technology exhibits limitations such as slow strength development and complex construction equipment.
Xiaojun Li, Bangbang Mu, Huaizhen Li, Ruifu Yuan   +3 more
wiley   +1 more source