Results 121 to 130 of about 807,314 (352)

Predicting Surface Subsidence in Northern Huainan Based on a Hybrid LSTM–Transformer Model

Applied Sciences
As one of the world’s primary energy sources, coal has driven economic development but has also led to severe surface subsidence. Currently, many regions around the world face significant ground deformation risks due to ongoing or legacy mining ...
Jia Xu, Hao Tan, Roucen Liu, Jinling Duan, Mingfei Zhu   +4 more
doaj   +1 more source

Selective Modification of the Product Profile of Biocatalytic Hydrolyzed PET via Product‐Specific Medium Engineering

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
The product profile of enzymatically hydrolyzed PET can be modified by medium engineering and thereby adapted to a desired product. TPA, MHET or BHET can be forced as the predominant product using a basic pH (blue), 25 % ethylene glycol (EG) and IsPETasewt (green) or ≥25 % EG and LCCICCG (pink), respectively.
Tobias Heinks, Katrin Hofmann, Simon Last, Igor Gamm, Luise Blach, Ren Wei, Uwe T. Bornscheuer, Christof Hamel, Jan von Langermann   +8 more
wiley   +1 more source

Prediction and analysis of mining subsidence in Longdong Coal Mine

Gong-kuang zidonghua, 2013
In order to predict and analyze mining subsidence in Longdong Coal Mine, prediction model of main cross section mining subsidence was established by use of probability integration method, and distribution law of surface subsidence deformation of main ...
XUE Ming-ke, WANG Yu-song, WANG Ju
doaj   +1 more source

Study on the failure mechanism of the shield excavation face in the sandy cobble stratum under different buried depths

Deep Underground Science and Engineering, EarlyView.
Abstract One of the significant challenges faced in shield tunnel construction is the risk of collapse resulting from abrupt changes in soil conditions in advance of the working face, particularly within the sandy cobble stratum. This study aims to effectively manage these sudden variations and to further investigate the failure mechanisms associated ...
Hua Jiang, Chongyang Liu, Ao Zhang, Xiaoyan Zhang, Yuhang Li   +4 more
wiley   +1 more source

A Method for Predicting the Surface Subsidence Duration and the Maximum Subsidence Velocity

Land
The surface subsidence duration and the maximum subsidence velocity are critical indicators to evaluate the stability and severity of surface damage.
Yanjun Zhang, Fei Wang, Yueguan Yan, Yuanhao Zhu, Linda Dai, Jiayuan Kong   +5 more
doaj   +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

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

Deep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

Soviet experience of underground coal gasification focusing on surface subsidence [PDF]

, 2015
Global coal mining activity is increasing due to demands for cheap energy and the availability of large coal deposits around the world; however, the risks associated with conventional coal mining activities remain relatively high.
Derbin, Y, Marshall, A, Walker, J, Wanatowski, D   +3 more
core   +2 more sources

Nonsilting transport characteristics of coal slurry in a deep underground fluidization conveying pipeline under the action of a guide vane swirler

Deep Underground Science and Engineering, EarlyView.
Aiming at the scientific frontiers of in situ fluidized mining of deep resources, a deep coal fluidized pipeline lifting system based on hydraulic conveying has been proposed. To solve the issue of particle sedimentation of large particles in horizontal connection sections, a solution involving the installation of guide vane‐type swirlers in the ...
Jiusheng Bao, Shaodi Zhao, Yan Yin, Zhongbin Wang, Shuai Liu, Shirong Ge   +5 more
wiley   +1 more source

Time-Series Analysis of Mining-Induced Subsidence in the Arid Region of Mongolia Based on SBAS-InSAR

Remote Sensing
Mongolia’s substantial mineral resources have played a pivotal role in its economic progress, with mining activities significantly contributing to this development.
Yuxin Xie, H. Bagan, Luwen Tan, Terigelehu Te, Amarsaikhan Damdinsuren, Qinxue Wang   +5 more
semanticscholar   +1 more source