Results 11 to 20 of about 80 (69)

Research on Anomaly Identification and Screening and Metallogenic Prediction Based on Semisupervised Neural Network. [PDF]

Comput Intell Neurosci, 2022
This paper firstly introduces the background of the research on neural network and anomaly identification screening and mineralization prediction under semisupervised learning, then introduces supervised learning, semisupervised learning, unsupervised learning, and reinforcement learning, analyzes and compares their advantages and disadvantages, and ...
Zhang R, Xi Z.
europepmc   +2 more sources

PFC2D‐Based Analysis of the Effect of the Axial Loading Rate on the Mechanical Properties of Backfill

Advances in Materials Science and Engineering, Volume 2023, Issue 1, 2023., 2023
The unloading failure process in mining engineering scenarios is similar to the loading failure process at different loading rates indoor. To clarify the relationship between the mechanical properties of backfill and the loading rate, a particle flow code 2D‐based numerical simulation was performed to establish the backfill model, and tests involving ...
Wang Kun, Fu Jian-Xin, Wang Yu, Yongding Tian   +3 more
wiley   +1 more source

Distribution of In Situ Stress in Northwest Jiaodong Peninsula

Advances in Civil Engineering, Volume 2022, Issue 1, 2022., 2022
In order to study the present state of the tectonic stress field in northwest Jiaodong Peninsula, the characteristics of the ground stress distribution along depth were analyzed with the method of regression analysis. A total of 164 items of in situ stress measurement data were collected.
Xingquan Liu, Huanxin Liu, Chao Peng, Xi Wang, Yuyun Fan, Mingwei Jiang, Yantian Yin, Qi Jia   +7 more
wiley   +1 more source

Improving the Stability of Subsurface Structures in Deep Metal Mines by Stress and Energy Adjustment: A Case Study

Advances in Civil Engineering, Volume 2021, Issue 1, 2021., 2021
In deep hard‐rock mines, the failure of subsurface structures (e.g., tunnels, stopes, and shafts) has been a significant problem affecting mining safety due to the high‐stress environment. In this paper, the mechanism of structural failure and instability is discussed, and optimized excavation methods are proposed for stress control in deep gold mines.
Huanxin Liu, Xingquan Liu, Zhuoying Tan, Yang Liu, Guilin Li, Arnaud Perrot   +5 more
wiley   +1 more source

Application of Clustering and Stepwise Discriminant Analysis Based on Hydrochemical Characteristics in Determining the Source of Mine Water Inrush

Geofluids, Volume 2021, Issue 1, 2021., 2021
In order to explore the law of groundwater evolution, the water source connection between faults and aquifers and the main sources of mine water inrush in the deep mining area of Yangcheng Coal Mine in Jining City, 40 groups of hydrochemical samples were collected and analyzed by Piper Diagram and Durov Diagram.
Weitao Liu, Jie Yu, Jianjun Shen, Qiushuang Zheng, Mengke Han, Yingying Hu, Xiangxi Meng, Francesco Frondini   +7 more
wiley   +1 more source

Evaluation of the use of sublevel open stoping in the mining of moderately dipping medium-thick orebodies

International Journal of Mining Science and Technology, 2021
The flow of blasted ore during mining of moderately dipping medium-thick orebodies is a challenge. Selecting a suitable mining system for such ore bodies is difficult. This paper proposes a diamond layout sublevel open stoping system using fan blastholes
Shuai Xu, Ruiyu Liang, Fidelis T. Suorineni, Yuanhui Li   +3 more
doaj   +1 more source

An experimental study on the fractal characteristics of the effective pore structure in granite by thermal treatment

Case Studies in Thermal Engineering, 2023
In order to analyze the change rule of the pore structure of different thermal treated granites and quantitatively characterize the distribution characteristics of effective pores, the pore structure characteristics of high-temperature granites under ...
Xinghui Wu, Meifeng Cai, Yu Zhu, Qifeng Guo, Peitao Wang, Jianwei Dong   +5 more
doaj   +1 more source

Rockburst Hazard Evaluation Using an Extended COPRAS Method with Interval-Valued Fuzzy Information

Applied Sciences, 2023
Rockburst is a major disaster in deep mining engineering, which can cause serious injury, death and economic losses. This study aims to solve rockburst hazard evaluation problems and determine the hazard levels of mines under uncertain circumstances.
Zheng Li, Weizhang Liang, Guoyan Zhao
doaj   +1 more source

Geology, Fluid Inclusion, and H–O–S–Pb Isotope Constraints on the Mineralization of the Xiejiagou Gold Deposit in the Jiaodong Peninsula

Geofluids, Volume 2019, Issue 1, 2019., 2019
The Xiejiagou deposit is a representative medium‐sized gold deposit in Jiaodong the Peninsula, which contains gold reserves of 37.5 t. The orebodies are hosted in the Linglong biotite granite with a zircon LA‐ICP‐MS U–Pb age of 160.5 ± 1.3 Ma (N = 15, MSWD = 1.2) and are characterized by disseminated‐ or stockwork‐style ores.
Peng Chai, Zeng-qian Hou, Hong-rui Zhang, Lei-lei Dong, Paolo Fulignati   +4 more
wiley   +1 more source

Optimization for U‐Shaped Steel Support in Deep Tunnels under Coupled Static‐Dynamic Loading

Advances in Civil Engineering, Volume 2019, Issue 1, 2019., 2019
With the effects of high geostress and intensive dynamic disturbances in deep mining, the stability and safety of tunnels are seriously affected. The optimization for U‐shaped steel support is of vital significance and can solve the problems of cost reduction and tunnel instability.
Yujun Zuo, Jian Wang, Longjun Dong, Weiwei Shu, Meilu Yu, Wenjibin Sun, Zhonghu Wu, Emilio García-Taengua   +7 more
wiley   +1 more source