Results 31 to 40 of about 3,691 (247)

Determination of Water-Proof Coal (Rock) Pillar Height in Mining Coal Seam Group under Water-Bearing Rock Stratum

Shock and Vibration, 2021
In order to determine the reasonable height of water-proof coal (rock) pillar when mining multiple coal seams under aquifer, this paper analyzes the expansion height of water-conducting fracture zone when coal seams mining.
Feng Wan, Hongqing Zhang, Peijun Zhou, Jie Guo   +3 more
doaj   +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

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

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

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

Research on development law of repeated mining overburden fractures in close inclined multiple coal seams

Meikuang Anquan
In the field of roof water hazard prevention and control, the evolution height of water conducting fissure zone is one of the important parameters of water hazard prevention.
Xufeng DONG, Weifu GAO, Haifeng ZHU, Wenbin SUN, Yining CAO, Houcheng CHEN   +5 more
doaj   +1 more source

Prediction of the Height of Fractured Water-Conducting Zone Using Swarm Intelligence Optimization Algorithms

, 2023
Abstract The 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 paper, 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   +1 more source

Study on development height of water-conducting fracture zone in mining overlying strata of deep coal seam

Meitan kexue jishu
Underground coal mining causes deformation, movement, breakage, and collapse of the overlying rock layers, forming preferential pathways for water migration, which can easily trigger water inrush accidents from the roof, severely threatening the safe and
Guohua CHEN, Hongtu YAN, Junwen ZHANG, Chao GUO, Suilin ZHANG, Zhaoxu WANG   +5 more
doaj   +1 more source