Results 11 to 20 of about 4,791 (276)

A Model to Estimate the Height of the Water-conducting Fracture Zone for Longwall Panels in Western China

Mine Water and the Environment, 2020
Accurate prediction of the height of the water-conducting fracture zone (WCFZ) is very important for safe coal mining, water resource storage, and protecting the environment. The proportion coefficient of hard rock and the actual height of the top caving coal were defined to predict the height of the WCFZ more accurately.
Xiang He, Yixin Zhao, Cun Zhang, Penghua Han   +3 more
core   +10 more sources

Research on the Height of the Water-Conducting Fracture Zone in Fully Mechanized Top Coal Caving Face under Combined-Strata Structure

Sustainability, 2022
In order to study the development height of the water-conducting fracture zone in a fully mechanized top coal caving face. The E2311 working face of Gaohe Coal Mine was chosen as the research object, and the combined-strata structure and the rock layer ...
Donghai Jiang, Wanpeng Huang, Changyou Liu   +2 more
exaly   +3 more sources

Prediction and Application of the Height of Water-Conducting Fracture Zone in the Composite Roof: A Case Study of Jinxinda Coal Mine

Sustainability, 2023
The water inrush from the roof of the coal mine is closely related to the movement failure of overburdened rock and the height of the water-conducting fracture zone.
Yanwei Duan, Tao Qin
exaly   +3 more sources

Elastic wave prospecting of water-conducting fractured zones in coal mining

Scientific Reports
In order to understand the development law of water-conducting fractures in overlying strata during the mining process of coal seam, an elastic wave exploration method based on key stratum theory is proposed to predict the height of water-conducting ...
Bingchao Zhao, Shenglin He, Kun Bai, Xiaoxiao Lu, Wei Wang   +4 more
doaj   +4 more sources

Prediction of coal mine water conduction fracture zone height based on integrated learning model. [PDF]

Sci Rep
Abstract To enhance the accuracy of predicting the height of water-conducting fracture zones (WCFZ) in coal mines, this study proposes a novel stacked ensemble learning model. The model integrates XGBoost and Support Vector Regression (SVR) as base learners, with CatBoost serving as the meta-learner, forming a two-layer architecture.
Wang M, Zhang X, Li X, Fang Z, Wei Y, Qin H, Wang S, Liu T, Zheng Y.   +8 more
europepmc   +5 more sources

Prediction of the Heights of the Water-Conducting Fracture Zone in the Overlying Strata of Shortwall Block Mining Beneath Aquifers in Western China

Sustainability, 2018
Longwall mining leaves pillars and irregular blocks of coal behind in its aftermath. In this study, a shortwall block mining (SBM) technique for recovering these coal resources has been proposed. A mechanical analysis model for calculating the heights of
Rui Gao, Shuai Guo
exaly   +3 more sources

Height Prediction of Water-Conducting Fracture Zone in Jurassic Coalfield of Ordos Basin Based on Improved Radial Movement Optimization Algorithm Back-Propagation Neural Network

Mathematics
The development height of the water-conducting fracture zone (WCFZ) is crucial for the safe production of coal mines. The back-propagation neural network (BP-NN) can be utilized to forecast the WCFZ height, aiding coal mines in water hazard prevention ...
Pingting Liu, Liangxing Jin
exaly   +3 more sources

Evolution mechanism of water-conducting fractures in overburden under the influence of water-rich fault in underground coal mining

Scientific Reports
Based on the 7618 working face in Yaoqiao coal mine of Datun mining area, the activation mechanism of water-rich faults and the development characteristics of water-conducting fractures in overlying strata under the influence of faults are studied by ...
Cao Zhengzheng, Yang Xiangqian, Li Zhenhua, Du Feng   +3 more
doaj   +3 more sources

Formation mechanism and height calculation of the caved zone and water-conducting fracture zone in solid backfill mining [PDF]

International Journal of Coal Science & Technology, 2020
AbstractTo study the heights of the caved zone and water-conducting fracture zone in backfill mining, the failure mechanism of strata during backfill mining was analyzed, and a method for determining the heights of the two zones was proposed based on key strata theory.
Lei Li, Fengming Li, Yong Zhang, Daming Yang, Xue Liu   +4 more
semanticscholar   +4 more sources

Research on Subsidence Prediction Method of Water-Conducting Fracture Zone of Overlying Strata in Coal Mine Based on Grey Theory Model

Water, 2023
The development height and settlement prediction of water-conducting fracture zones caused by coal seam mining play an important role in the stability of overburden aquifers and the safety of roadways.
Chunde Piao, Weiqi Chi, Zhihao He, Jinjun Li, Yi Lu   +4 more
core   +2 more sources