Results 201 to 210 of about 2,521,798 (304)

Numerical research on anti‐dislocation measures design of deep‐buried tunnels in an anisotropic rock mass area

Deep Underground Science and Engineering, EarlyView.
This paper conducts a numerical simulation study on the construction of a deep‐buried tunnel in an anisotropic stratum area. A statistical analysis of the effects of two anti‐faulting design measures, namely, a conventional design and an articulated design, is carried out, and the results demonstrate the effectiveness of the anti‐faulting structures ...
Shiqi Liu, Huanling Wang, Yong Zhou, Zhen Wang   +3 more
wiley   +1 more source

Task allocation method for anchoring robot with multiple drilling units and multiple tasks in coal mine roadways. [PDF]

Sci Rep
Ma K, Ma H, Wang C, Sun S, Guo Y, Wang P, Nie Z, Zhang Y, Su H, Wu X.   +9 more
europepmc   +1 more source

Probabilistic characterization of seepage‐induced tunnel face failure via a two‐phase double‐point material point method

Deep Underground Science and Engineering, EarlyView.
To address seepage‐induced tunnel face collapse, this study develops a two‐phase double‐point MPM framework to capture large‐deformation hydro‐mechanical interactions. Incorporating a cementation‐based constitutive model with dynamic permeability updates, the model is successfully validated against saturated granular‐column collapse experiments ...
Yue Tong, Mingliang Zhou, Jie Xu, Zeyu Li, Yisheng Zhao, Jin An, Hongwei Huang   +6 more
wiley   +1 more source

A novel Upward-Extended Five-Zone model for overburden failure in deep coal seams with ultra-thick Cretaceous strata. [PDF]

Sci Rep
Yin HY, Xiao Y, Fan XR, Xie DL, Wei JC, Niu HG, Zhang WJ, Han CH, Wei YQ.   +8 more
europepmc   +1 more source

Analysis of lining force transmission coefficient and surrounding rock displacement in lined rock caverns for underground gas storage

Deep Underground Science and Engineering, EarlyView.
This study derives an explicit expression for the lining force transmission coefficient of underground gas storage lined rock caverns (LRCs) via the complex variable function method, considering the displacement release coefficient. Taking the 1‰ tensile strain of surrounding rock as the criterion to determine lining thickness, it systematically ...
Yaohui Li, Jianping Yang, Weizhong Chen
wiley   +1 more source

Minimally Invasive Chemomechanical Caries Removal in Paediatric Dentistry: A Systematic Review of Papacarie and Brix 3000. [PDF]

J Clin Med
Carmona-Santamaría M, Pérez-Sánchez D, Aura-Tormos JI, Guinot-Barona C, Marqués-Martínez L, García-Miralles E.   +5 more
europepmc   +1 more source

Dynamic prediction of coal and gas outburst risk based on quantitative analysis of stress–energy evolution and adaptive correction

Deep Underground Science and Engineering, EarlyView.
This study quantitatively analyzed the spatiotemporal evolution of stress redistribution ahead of the working face by integrating coal seam distribution, tectonic stress anomalies, gas pressure, and mining‐induced disturbances. An R‐value criterion for coal and gas outburst (CGO) risk assessment was established based on energy principles.
Yingjie Zhao, Xueqiu He, Dazhao Song, Liming Qiu, Minggong Guo, Jie Liu, Qiang Liu, Yi Zhu   +7 more
wiley   +1 more source

Spatiotemporal deformation patterns induced by ultradeep excavation in soft soil areas. [PDF]

Sci Rep
Cheng X, Wang W, Li Q, Jia J, Wang Z, Li C, Wang T, Zheng G.   +7 more
europepmc   +1 more source

Mitigating surcharge‐induced column‐head cracking in double‐deck shield tunnels using hyperelastic bearing joints

Deep Underground Science and Engineering, EarlyView.
A staged three‐dimensional nonlinear soil–structure interaction (SSI) model is established, in which the initial geostress state, tunnel excavation, lining installation, delayed activation of the internal frame, and subsequent surcharge loading are simulated sequentially.
Xinyu Liu, Xiang Ci, Weizhong Chen, Jianping Yang   +3 more
wiley   +1 more source

Optimization of bottom structure layout and key parameters in block caving: a case study of the Cukaru Peki Copper-Gold Mine in Serbia. [PDF]

Sci Rep
Su Z, Huang M, Su Y, Qiang W, Chen Z, Wang C, Guo P, Li Z.   +7 more
europepmc   +1 more source