Results 81 to 90 of about 807,311 (310)

Energy evolution‐based damage quantification and failure prediction of fault zone tunnel lining concrete: A novel acoustic emission–strain energy coupling approach

Deep Underground Science and Engineering, EarlyView.
This study investigates the damage evolution and failure mechanisms of tunnel lining concrete in active fault zones through uniaxial compression tests integrated with acoustic emission (AE) monitoring. A strong linear correlation is identified between the AE cumulative absolute energy and the total strain energy, providing a reliable energy‐based ...
Shuaida Zhu, Dongming Zhang, Mingliang Zhou, Shengjun Duo, Hongwei Huang   +4 more
wiley   +1 more source

Research on Geological Disaster Risk Assessment Method Based on GIS in Changji City, Xinjiang [PDF]

E3S Web of Conferences
This study takes the risk assessment of geological disasters in Changji City as the research object. By reviewing the detailed investigation report and risk survey documents of 1:50000 geological disasters in Changji City, along with the annual ...
Liao Shibin, Liang Yuxia, Tao Jintao, Geng Xinyu, Tursun Gulbostan   +4 more
doaj   +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

Geological Survey of Victoria. No. 53d : S.W., County of Gladstone, Part of Moliagul [cartographic material] /

, 1915
Geological map shows the townships of Goldsborough and Dunolly near an intersection of the parishes of Painswick and Barp, both in the county of Gladstone. Relief shown by hachures.; Also available in an electronic version via the internet at: http://nla.
Geological Survey of Victoria.
core  

Closed‐form stress solution and minimum safe burial depth correction for shallow‐buried large‐diameter energy storage chambers

Deep Underground Science and Engineering, EarlyView.
This study develops a closed‐form solution for stress analysis of shallow‐buried large‐diameter compressed air energy storage (CAES) chambers, explicitly incorporating free surface, lateral pressure, and gravity gradient effects. Validated against numerical simulations, the solution accurately captures stress redistribution and reveals upward migration
Zeyuan Sun, Cheng Zhao, Jinquan Xing
wiley   +1 more source

Geological Survey of Victoria. No. 51 : S.W., County of Dalhousie [cartographic material] /

Geological map shows Horse Hill at bottom centre in the parish of Baynton and adjacent to the parish of Glenhope. Relief shown by hachures.; "Printed at the Geological Department,"; Also available in an electronic version via the internet at: http://nla ...
Geological Survey of Victoria.
core  

Real‐time multiscale characterization of water migration in deep coal under stepwise pressure‐increasing injection: Combined low‐field nuclear magnetic resonance and multifractal approach

Deep Underground Science and Engineering, EarlyView.
The graphical abstract illustrates the real‐time multiscale characterization of water migration in deep coal under stepwise pressure‐increasing injection. Under in‐situ hydrostatic pressure, the water invasion front advances progressively along the axial direction as the injection pressure increases stepwise, tracked in real time by nuclear magnetic ...
Lei Song, Hongwei Zhou, Zelin Liu, Yimeng Wang, Xiaohai Zhang, Mingyuan Lu, Yang Ju   +6 more
wiley   +1 more source

Surveys and Analysis of Geological Disasters in Zhaojue County of Sichuan

Shuitu baochi yanjiu, 2008
Based on plenty of surveys and analysis of data in Zhaojue county of Liangshan Yi Autonomous Prefecture,the paper points out the types of geological disasters include landslide、debris flow、unstable slope and collapse （crack）.This paper studies the causes
ZUO Chang-hu~1 XU Qiang~1 YANG Xue-zhi~2
doaj  

Intelligent inversion analysis of dilatancy angle of surrounding rock based on the force of negative Poisson's ratio anchor cable

Deep Underground Science and Engineering, EarlyView.
An intelligent inversion framework estimates the dilatancy angle of the surrounding rock from negative Poisson's ratio (NPR) anchor cable force histories. Numerical tunnel‐excavation simulations generate force data across a controlled dilatancy‐angle range, which are mapped to the target parameter using a sequential convolutional neural network (CNN ...
Li Cui, Zhihao Sun, Lei Wang, Zhenmin Qi, Jianjun Ma, Xiaoming Sun   +5 more
wiley   +1 more source

Geological Survey of Victoria. No. 6 [cartographic material]

Caption title.; Quarter sheet 6SW is a geological map of the town of Macedon in the parish of Macedon on the top left of the map, with the town of Riddell in the parish of Kerrie on the far right and the town of Gisborne in the parish of Gisborne at the ...
Geological Survey of Victoria.
core