Results 201 to 210 of about 358,496 (277)

Influence of Activator Modulus and Water-to-Binder Ratio on Mechanical Properties and Damage Mechanisms of Lithium-Slag-Based Geopolymers. [PDF]

Materials (Basel)
Zhang S, Che C, Jiang H, Zhang R, Liu Y, Yang S, Zhang N.   +6 more
europepmc   +1 more source

Investigation of the failure characteristics of fissure tunnels under dynamic and static combinations

Deep Underground Science and Engineering, EarlyView.
This article aims to investigate the dynamic fracture response of fractured tunnel models under zero geological stress through physical experiments and numerical simulations. It further simulates the dynamic fracture characteristics of fractured tunnel models under geological stress ranging from 0 to 2.5 MPa using the numerical software AUTODYN ...
Peng Ying, Yu Ying, Xiaohan Li, Han Zhao, Kewei Yu, Zheming Zhu, Lei Zhou, Xibin Li   +7 more
wiley   +1 more source

Modeling and analysis of the risk evolution for coal mine gas explosion from the perspective of safety information loss. [PDF]

Sci Rep
Guo H, Cheng L, Jiang M.
europepmc   +1 more source

Optimization of cut‐hole layout under high in situ stress based on numerical simulation and field tests

Deep Underground Science and Engineering, EarlyView.
This study investigates the blast‐induced rock damage patterns under different cut‐hole layouts and ground stress conditions through numerical simulations and field tests. The findings in this study provide valuable insights for similar underground engineering applications.
Junjie Zhao, Diyuan Li, P. G. Ranjith, Xinxin Lü, Yanliang Li, Xiaoli Su   +5 more
wiley   +1 more source

Experimental and numerical study on waterproofing performance and leakage mechanism of bell-and-spigot joints in prefabricated utility tunnels. [PDF]

Sci Rep
Zhai CJ, Wu MF, Hu XD, Zhou MS, Zhong JR.   +4 more
europepmc   +1 more source

Data‐driven analysis of the spatial dependence of grouting efficiency during tunnel excavation

Deep Underground Science and Engineering, EarlyView.
Prediction of grouting efficiency using machine learning is enhanced by adopting a training strategy that accounts for the grouting process across multiple rounds. Abstract Grouting with water–cement mixtures is the most widely used and cost‐effective method for managing excess water inflow during tunnel construction.
Huaxin Liu, Xunchang Fei, Wei Wu
wiley   +1 more source

Research on the material properties of concrete in subway stations after in service for 50 years. [PDF]

Sci Rep
Zhang B, He S, Ma J, He J, Li Y, Zheng J.   +5 more
europepmc   +1 more source

Resonance‐induced restoration of rock permeability degraded by heavy components of crude oil

Deep Underground Science and Engineering, EarlyView.
Resonance‐induced changes occur in filtration properties of sedimentary rocks in crude paraffin oil flow under acoustic vibrations. Experimental data on (a) pressure drop; (b) permeability; (c) pressure at the rock inlet; and (d) pressure at the rock outlet are presented.
Evgenii Riabokon, Qian Yin, Mikhail Guzev, Mikhail Turbakov, Evgenii Kozhevnikov, Nadezhda Riabokon, Ivan Panteleev   +6 more
wiley   +1 more source

The influence of local officials' promotion incentives on Public-Private Partnership project investment from a political-performance-driven perspective: Empirical evidence from China. [PDF]

PLoS One
Zhang L, Yue M, Du S, Zheng R, Zhu T, Tang B.   +5 more
europepmc   +1 more source

Rockburst prediction based on data preprocessing and hyperband‐RNN‐DNN

Deep Underground Science and Engineering, EarlyView.
A data preprocessing workflow is proposed to address challenges in rockburst data analysis. Coupled algorithms preprocess the data set, and hyperband optimization is used to enhance RNN performance. Results show that preprocessing improves accuracy, while dense layers enhance model stability and prediction performance.
Yong Fan, Chenxi Yin, Guangdong Yang, Shengyong Ding, Bin Tian   +4 more
wiley   +1 more source