Results 251 to 260 of about 4,791 (276)

Investigation of the Height of Fractured Water-Conducting Zone: A Case Study

Geotechnical and Geological Engineering, 2021
At present, the prediction of the height of fractured water-conducting zone has become increasingly important for the safety of underground mining, since the mining depth increase continuously. According to mining conditions and petrophysical parameters of overburden strata, a suitable numerical model is established by FLAC3D to carry out numerical ...
Shihu Ren, Feng Cui, Shizhong Zhao, Jianshe Cao, Jing Bai, Zhengxuan Jiang, Yingchun Li   +6 more
openaire   +1 more source

An Improved Back Propagation Neural Network Based on Differential Evolution and Grey Wolf Optimizer and Its Application in the Height Prediction of Water-Conducting Fracture Zone

Applied Sciences (Switzerland)
Given that the conventional back propagation neural network (BPNN) easily falls into the local optimal solutions, resulting in poor prediction accuracy, an improved BPNN based on the differential evolution and grey wolf optimizer (DEGWO) is proposed, the
Jingzhong Zhu, Wenping Li
exaly   +2 more sources

A Novel Approach for Predicting the Height of Water-Conducting Fracture Zone under the High Overburden Caving Strength Based on Optimized Processes

Processes, 2020
The height of water-conducting fracture zones (WCFZs) is vital for the prevention of water, gas, and roof accidents in coal mines. However, its dynamic evolution law and maximum height are difficult to be obtained by traditional prediction methods ...
Tao Hu, Gongyu Hou, Zhen Zhu
exaly   +2 more sources

The height of fractured water-conducting zone in undermined rock strata

Engineering Geology, 2011
The height of fractured water conducting zone is of significant importance for the safety of underground mining. Because of the conspicuous discrepancy of the height of fractured water conducting zone in Bulianta Coal Mine as predicted by the traditional method with those observed in practice, a systematic research has been carried out.
Xiexing Miao, Ximin Cui, Jin'an Wang, Jialin Xu   +3 more
openaire   +1 more source

Tectonic controls on the development of water-conducting fracture zones in the North China Block

Measurement: Journal of the International Measurement Confederation
Longqing Shi
exaly   +2 more sources

Research on height prediction of water-conducting fracture zone in coal mining based on intelligent algorithm combined with extreme boosting machine

Expert Systems With Applications
Keping Zhou, Xin Xiong
exaly   +2 more sources

Research of the electrical anisotropic characteristics of water-conducting fractured zones in coal seams

Applied Geophysics, 2017
Water flooding disasters are one of the five natural coal-mining disasters that threaten the lives of coal miners. The main causes of this flooding are water-conducting fractured zones within coal seams. However, when resistivity methods are used to detect water-conducting fractured zones in coal seams, incorrect conclusions can be drawn because of ...
Ben-Yu Su, Jian-Hua Yue
openaire   +1 more source

The Height of Water-Conducting Fractured Zones in Longwall Mining of Shallow Coal Seams

Geotechnical and Geological Engineering, 2015
The height of the water-conducting fractured zone is of significant importance for both the prevention of water inrush induced disasters and the design of longwall mines. To ensure the mining safety of shallow coal seams under water-rich aquifers, an approach for forecasting the height of the water-conducting fractured zone is proposed by analyzing the
Xuesheng Liu, Yunliang Tan, Jianguo Ning, Chenlin Tian, Jun Wang   +4 more
openaire   +1 more source

Application research of SSA-RF model in predicting the height of water-conducting fracture zone in deep and thick coal seams

Artificial Intelligence in Geosciences
Li Wang, Jiming Zhu, Zhongchang Wang
exaly   +2 more sources

Coupling Relationship between Ground Collapse Fracture and Water-Conducting Fracture Zone Development

Advances in Engineering Technology Research
The coupled development of ground collapse fissures and water-conducting fracture zones is the common hazard in mining areas, causing serious threats to mine water control and ecological safety. This study reviews the research progress on collapse fissures and water-conducting fracture zones in domestic and abroad systematically, summarizing their ...
WeiYe Li, Shuo Gao, FaZheng Liu, JiaJie Fan   +3 more
openaire   +1 more source