Results 191 to 200 of about 34,036 (268)

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

Deep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen, Pinqiang Mo, Zhao Lu, Lianfei Kuang, Qiang Zhang, Abolfazl Eslami   +5 more
wiley   +1 more source

Failure mechanisms of energy redistribution in excavation roadways: experimental and numerical investigation. [PDF]

Sci Rep
Peng Y, Cao A, Hao Q, Lyu G, Xue C, Bai X.   +5 more
europepmc   +1 more source

Caving‐enhanced geothermal system overwhelms fracturing‐ and pipe‐enhanced geothermal system in heat extraction

Deep Underground Science and Engineering, EarlyView.
Our study reveals that caving‐enhanced geothermal systems (C‐EGS) with adequately fractured reservoirs achieve optimal heat extraction by minimizing preferential flow paths, while conventional fracturing (F‐EGS) and pipe‐based (P‐EGS) systems suffer accelerated thermal drawdown.
Fangchao Kang, Tianjiao Li, Yingchun Li, Jinlong Men, Chun'an Tang   +4 more
wiley   +1 more source

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

Deep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang   +5 more
wiley   +1 more source

Case Report: Sturge-Weber syndrome with contralateral morning glory syndrome. [PDF]

Front Med (Lausanne)
Wang L, Li M, Dou G, Zheng L, Zhou Z, Sun J, Wang Y, Zhang Z.   +7 more
europepmc   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

On the necessity of complete caries excavation: a narrative review. [PDF]

Head Face Med
Dammaschke T.
europepmc   +1 more source

Discrete element study on mechanical properties of layered sand-cobble strata under unloading stress path of shield construction. [PDF]

Sci Rep
Liang L, Shi Y, Wei G, Yu C, Feng G.
europepmc   +1 more source

Optimal selection of a metro tunnel excavation method using AHP and TOPSIS: a case study of Tehran metro. [PDF]

Sci Rep
Rostami A, Chakeri H, Shahriar K, Mousapour H.   +3 more
europepmc   +1 more source