Results 81 to 90 of about 921,432 (309)

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

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

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

Forensic back-analysis of a reactivated deep-seated landslide in volcanic residual soils of the Cisumdawu highway KM 178, Indonesia

Geoenvironmental Disasters
Background This study is a forensic back-analysis of the 2021 embankment failure at KM 178 of the Cisumdawu Highway, Indonesia. The post-failure investigation identified weak subsurface materials but no discrete failure horizon, and the mechanism was ...
Imam Santosa, Nur Khoirullah, Yukni Arifianti, Iwan Gunawan Tejakusuma, Shafna Diah Melani, Kyla Amira, Baqiyatus Soliha, Euthalia Hanggari Sittadewi, Wira Cakrabuana   +8 more
doaj   +1 more source

Transparent exploration technology for hidden disaster-causing factors of geological structure：taking Tunbao Coal Mine in Xinjiang as an example

Meitan kexue jishu
Hidden disaster-causing factors in coal mines are key geological factors that restrict the safety, high efficiency, green and intelligent mining, and transparent geology is an important technical means to realize the detection of hidden disaster-causing ...
Haijun WANG, Sanlong ZHENG, Xiangye WANG, Mintao DONG, Yan WU, Liang MA, Wei YANG, Yuying ZHU   +7 more
doaj   +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  

Multiphysics Coupled Response of Stress and Seepage in Coal Under Borehole Disturbance and Optimization of Borehole Parameters

Energy Science &Engineering, EarlyView.
One‐way FLAC3D‐COMSOL coupled modeling and field validation show that a 150 mm borehole radius with 5 m spacing provides the best coordination of plastic‐zone expansion, stress relief, permeability enhancement, and gas‐pressure attenuation, increasing the pure gas drainage rate by 35.4%. ABSTRACT To rationally determine the borehole radius and borehole
Yewu Bi, Yichen Li, Yangyang Guo, Yikai Zhang, Jiazhi Sun, Kangnan Li, Yongpeng Fan, Qixian Li   +7 more
wiley   +1 more source

Danger Evaluation of Geological Disaster in Miyun County

Shuitu baochi yanjiu, 2005
Regional natural disasters become an important aspect of research on disasters. On the basis of background and cause analysis of the geological disaster in Miyun county,and combining with the spatial and temporal distribution of the main geological ...
李正国, 吴健生, 李卫峰
doaj