Coal pillar failure analysis and instability evaluation methods: A short review and prospect

C Zhang, Y Zhao, P Han, Q Bai - Engineering Failure Analysis, 2022 - Elsevier
Underground coal mining is characterized by the formation of extensive pillars. Coal pillars
serve various purposes, and their instability failure characteristics play a vital role in safety …

Underground space utilization of coalmines in China: A review of underground water reservoir construction

C Zhang, F Wang, Q Bai - Tunnelling and Underground Space Technology, 2021 - Elsevier
A large number of abandoned mines with sizeable underground space resources were
formed in China. Meanwhile, for an operational mine, the protection and utilization of mine …

Predicting hard rock pillar stability using GBDT, XGBoost, and LightGBM algorithms

W Liang, S Luo, G Zhao, H Wu - Mathematics, 2020 - mdpi.com
Predicting pillar stability is a vital task in hard rock mines as pillar instability can cause large-
scale collapse hazards. However, it is challenging because the pillar stability is affected by …

Investigating the influence of water on swelling deformation and mechanical behavior of mudstone considering water softening effect

T Wang, C Yan - Engineering Geology, 2023 - Elsevier
Mudstone not only swells and deforms but also be softened during water absorption
because it contains many hydrophilic clay minerals. To study the influence of water on the …

[HTML][HTML] Enhancing safety, sustainability, and economics in mining through innovative pillar design: A state-of-the-art review

Y Zhang, H Qi, C Li, J Zhou - Journal of Safety and Sustainability, 2024 - Elsevier
The design of underground hard rock pillars plays a crucial role in the safety and stability of
underground mining operations. Ensuring safe and efficient resource extraction while …

Study on macroscopic mechanical behavior and meso-failure evolution of gabbro of different particle sizes

H Ding, X Fu, Q Sheng, J Chen, C Yan, K Tian… - Rock Mechanics and …, 2023 - Springer
As a typical heterogeneous material, the macroscopic mechanical properties of rocks are
influenced by factors, such as the type, size, and spatial distribution of internal mineral …

Tunnel failure in hard rock with multiple weak planes due to excavation unloading of in-situ stress

S Chen, F Feng, Y Wang, D Li, W Huang… - Journal of Central South …, 2020 - Springer
Natural geological structures in rock (eg, joints, weakness planes, defects) play a vital role in
the stability of tunnels and underground operations during construction. We investigated the …

Modified joint element constitutive model for FDEM to simulate the nonlinear mechanical behavior of rocks

Y Zheng, C Yan, H Zheng - Computers and Geotechnics, 2023 - Elsevier
The closure behavior of fractured rock, which is a crucial characteristic, is challenging to
simulate accurately using commonly employed numerical models. To address this issue and …

An overview of opportunities for machine learning methods in underground rock engineering design

J Morgenroth, UT Khan, MA Perras - Geosciences, 2019 - mdpi.com
Machine learning methods for data processing are gaining momentum in many geoscience
industries. This includes the mining industry, where machine learning is primarily being …

Strength reduction of initial high-stress rock pillars under different triaxial unloading paths

W Wu, F Gong, Q Jiang, L He - Rock Mechanics and Rock Engineering, 2023 - Springer
The mechanical behavior of deep rock pillars is closely related to the coupling effect of the
initial high stress and the excavation-unloading process. In this study, the failure and …