Results 41 to 50 of about 2,887,865 (118)

Analysis of the Evolution Law of Mining‐Induced Water Flowing Fracture of Composite Hard Roof in the Border Mining Area of Inner Mongolia and Shaanxi

Energy Science &Engineering, Volume 13, Issue 4, Page 1720-1731, April 2025.
Multiple research methods were employed to analyze the fracture characteristics and migration patterns of the two thick layers of pressurized water‐bearing sandstone commonly found in the mining area bordering Inner Mongolia and Shaanxi, further elucidating the evolution characteristics of mining‐induced water‐conducting fissures.
Jiang Xiao, Yihui Wang, Boyuan Zhang, Tongxiaoyu Wang, Yujiang Liu, Yulin Wang, Yachao Sun   +6 more
wiley   +1 more source

Roof Water Pre-discharge Feasibility and Standard of Deep Buried Coal Seam Working Face in Mengshan Mining Area

Meikuang Anquan, 2020
Based on the research of landforms, hydrogeological conditions, roof hole water outflow of working face and goaf water outflow in deep buried coal seam area of Ordos basin, we constructed a working face roof water pre-drainage standard.
YANG Jian, SUN Jie, LIANG Xiangyang, HUANG Hao, WANG Qiangmin
doaj   +1 more source

Study on Mine Earthquake Prediction Based on Numerical Simulation of Rock Fracture Evolution

Energy Science &Engineering, Volume 13, Issue 4, Page 2082-2097, April 2025.
This study analyzes the geomechanical behavior and fracture evolution of overlying strata to prevent rock bursts and identify mine earthquake sources. By establishing a refined stope model and applying the “O–X” fracture mechanics model, combined with microseismic monitoring data, this study reveals the spatiotemporal evolution laws of strata migration
Xiu‐Feng Zhang, Wei Li, A‐Tao Li, Feng Gao, Ning Zhang, Xiang Li, Yang Chen, Chuan‐Cheng Liu, Chao‐Hong Shi, Feng‐Jun Han, Bao‐Qi Wang   +10 more
wiley   +1 more source

Geophysics Indicator of Sandstone‐Type Uranium Mineralization in the Northern Ordos Basin, China: Analysis From Gravity and Magnetic Data

Earth and Space Science, Volume 12, Issue 3, March 2025.
Abstract Ordos Basin, one of the largest uranium resource areas in China, holds significant potential due to its favorable metallogenic geological conditions and promising potential. Early exploration efforts primarily targeted sandstone‐hosted uranium deposits.
M. L. Xu, Y. B. Yang, Y. M. Deng, C. Y. Sun, Z. N. Su, C. H. Feng, S. L. Shi   +6 more
wiley   +1 more source

Origin of Water and Hydrochemical Components of Lakes: Example From the Mu Us Desert, Northwest China

Water Resources Research, Volume 61, Issue 2, February 2025.
Abstract Desert lakes are sparsely distributed in arid/semi‐arid regions of the world and are crucial to desert hydro‐ecosystem. However, the sources of water and dissolved components in desert lakes, especially the inputs from anthropogenic activities, remain to be fully understood.
Fengxia Liu, Guangcai Wang, Fu Liao, Zheming Shi, Charles Cravotta, Pengpeng Zhou, Xiangyang Liang   +6 more
wiley   +1 more source

Characteristics of microbial communities in water bodies of ecologically fragile coal mining areas and indications for mine water filling

Meitan kexue jishu
The overall water resources in ecologically fragile mining areas in our country are scarce, but in some areas, mine water inflow is exceptionally large.
Limin FAN, Tao LI, Ying GAO, Ruhong BAI, Qiang SUN   +4 more
doaj   +1 more source

Surface Subsidence Prediction Model in Deep Composite Lithologic Gangue Backfill Mining of Under the Coupling Effect of High Ground Stress and Water Environment

Advances in Civil Engineering, Volume 2025, Issue 1, 2025.
Under the coupling action of high ground stress and water environment, the physical and mechanical properties of backfill will change to some extent, and then secondary compression will occur. In this study, a prediction model of surface subsidence in deep filling mining was established through the combination of physical tests and theoretical analysis.
Leixiang Peng, Zhiyang Wang, Huaiwen Wang, Yan Zhang, Dawei Yin   +4 more
wiley   +1 more source

Support de formation de l'atelier Discord - SN 2023 [PDF]

, 2023
Discord est une plateforme permettant aux personnes ayant des intérêts similaires de partager et de communiquer. Contenu de la formation : Panorama des usages permis par Discord. Création d'un compte sur l’application ou en ligne.
service formation
core   +1 more source

Research on Strata Movement Control in Deep Composite Lithologic Gangue Backfill Mining of Super‐Thick and Weak Cementation Overburden Based on PFC–FLAC Coupling Simulation

Advances in Civil Engineering, Volume 2025, Issue 1, 2025.
In order to alleviate geological disasters such as rock burst, mine earthquake, and surface subsidence and realize the coordinated development of coal resources safe mining and environmental protection in Ordos coalfield, this article proposes a local filling and multiface coordinated mining rock movement control method.
Yonglei Li, Jiangning Gan, Guojian Zhang, Zhiyong Liu, Guangli Guo, Baode Guo, Shuo Sun, Dawei Yin   +7 more
wiley   +1 more source

La Formation sur mesure dans les cégeps en 1986-1987 : état de la situation / [PDF]

, 1988
La couv.
Québec (Province). Service de formation des adultes, Dubé, Gilles   +1 more
core