Results 41 to 50 of about 3,889 (269)

Evolution of Water-Conducting Fracture in Weakly Cemented Strata in Response to Mining Activity: Insights from Experimental Investigation and Numerical Simulation [PDF]

, 2023
The accurate prediction of the vertical extent of water-conducting fracture (WCF) zones in weakly cemented strata is particularly significant in preventing and controlling water hazards in western coal mines. The evolution of fractures in weakly cemented
Quanhui Liu, Chenyao Zhou, Dan Ma, Guanshi Wang, Yong Liu, Zhen Huang   +5 more
core   +1 more source

Paste Filling Technology and Its Application in Fully Mechanized Caving Mining Under Aquifer

Meikuang Anquan, 2020
In view of the problem that water inrush is easy to occur in the mining of coal seam under aquifer, taking a mine in Shaanxi Province as an engineering background, this paper proposes a paste filling technology behind transitional support in fully ...
JIAN Yong, WANG Chao, ZHOU You, ZHANG Yanxu, LIU Tao
doaj   +1 more source

Temporal and Spatial Evolution Mechanisms of the Water-Conducting Fractured Zone of Overlying Strata in the Kongzhuang Coal Mine

Geofluids, 2023
Kongzhuang coal mine of Shanghai Datun Energy Resources Co., Ltd. is a typical deep coal mine in eastern China. The mining disturbance of working face in deep coal mine leads to the fracture and movement of overlying strata and the damage of the aquifer ...
Zhang Pei-ding, Sun Chao-shang, Fan Xuan, Li Song-tao, Wang Long-jing, Cao Zheng-zheng   +5 more
doaj   +1 more source

Study on the damage characteristics of overburden of mining roof in deeply buried coal seam

Scientific Reports, 2022
The study of water-conducting fracture zone development height is key to the scientific prevention and control of water damage in mines. Based on the geological conditions of the Wenjiapo coal mine in Binchang, China, this paper investigates the ...
Tianwen Long, Enke Hou, Xiaoshen Xie, Zhigang Fan, Ermin Tan   +4 more
doaj   +1 more source

Using swarm intelligence optimization algorithms to predict the height of fractured water-conducting zone

Energy Exploration & Exploitation, 2023
The accurate calculation of the height of fractured water-conducting zone (FWCZ) is of great significance for mine optimization design, water disaster prevention, and safety production of the coal mines. In this article, a height-prediction model of FWCZ based on extreme learning machine (ELM) is proposed.
Dekang Zhao, Zhenghao Li, Guorui Feng, Fulong Wang, Chenwei Hao, Yaming He, Shuning Dong   +6 more
openaire   +2 more sources

Multi-factor Contribution to the Height of Water-conducting Fracture Zone and Mine Zoning for Water Protection in Yushen Coalfield

Taiyuan Ligong Daxue xuebao, 2023
Predicting the Water-conducting fracture zone height (WFZH) and determining the mining zones that require water conservation operations are critical for the mine sustainability. In this paper, mathematical statistics, multiple regression and spatial analysis methods were employed to analyze the mechanisms of longwall parameters contributing to WFZH and
Shuai ZHANG, Guorui FENG, Dongsheng ZHANG, Wei YU   +3 more
openaire   +1 more source

Significance of fracture rim zone heterogeneity for tracer transport in crystalline rock [PDF]

, 2010
Conducting fractures of crystalline rock are typically altered over long periods of time. The fracture rim zone, a result of these alterations, will as a rule have different physical and chemical properties from the unaltered ("fresh'') rock, depending ...
Cvetkovic, Vladimir,
core   +1 more source

Evolution law of water-conducting fault zone in large mining height working face under sandstone aquifer of Luohe Formation [PDF]

, 2021
Aiming at the problem of safe coal mining under the sandstone aquifer covering Luohe Formation in the thick coal seam mining face of Xunyao Mining Area, theoretical analysis, similar material test and numerical simulation were used to study the overlying
YANG Yuliang, XU Zhuhe
core   +1 more source

Research on the height of “two zones” in overlying strata of fully mechanized caving mining of extra-thick coal seam based on multi-source data fusion

Meikuang Anquan
To prevent water inrush accidents in the coal mining face caused by the development of the water-conducting fracture zone in the overlying strata to the aquifer, this study conducts an in-depth study on the height of the water-conducting fracture zone ...
Lingtao KONG, Xiaoming LI, Yongjun LI, Rui XU, Xiaobin XU, Haisong ZHANG   +5 more
doaj   +1 more source

Structural Analyses aiding Identification of Water Conductive Fracture Zones in Crystalline Rock [PDF]

ASEG Extended Abstracts, 2018
Development of hydraulic conductive zones in crystalline rock can result from a wide range of geological conditions which include primary structures, post crystalline tectonics, fluid solution and movement within a developing and eroding regolith. Crystalline rock areas mostly have low water resource potential due to inherent extremely low storage and ...
openaire   +1 more source