Coal pillar failure analysis and instability evaluation methods: A short review and prospect
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 …
serve various purposes, and their instability failure characteristics play a vital role in safety …
Evaluation of energy accumulation, strain burst potential and stability of rock mass during underground extraction of a highly stressed coal seam under massive strata …
Severe geotechnical problems like strain burst, side spalling, roof fall, irregular caving, the
premature collapse of rib/remnant pillars, etc. are frequently observed during the mining of …
premature collapse of rib/remnant pillars, etc. are frequently observed during the mining of …
Progressive failure processes and mechanisms of disasters caused by interrelated failure of residual coal pillars and rock strata
The increasing number of closed/abandoned mines being reused has become a concern for
people. However, a large number of coal pillars were left behind in the closed/abandoned …
people. However, a large number of coal pillars were left behind in the closed/abandoned …
Study on the mechanism of progressive instability of special-shaped coal pillar and the stability control of roadway under the influence of mining
D Chen, X Wang, F Zhang, J Bai, X Zhao, M Li… - Rock Mechanics and …, 2024 - Springer
Coal pillar is a crucial element formed during underground coal mining, playing a significant
role in ensuring coal mining operations are conducted safely. Historically, research on coal …
role in ensuring coal mining operations are conducted safely. Historically, research on coal …
Design of stable parallelepiped coal pillars considering geotechnical uncertainties
The stability of underground parallelepiped coal pillars formed during trunk road
development in inclined coal seams is very important for safe access to the mine workings …
development in inclined coal seams is very important for safe access to the mine workings …
Experimental study on the influence of coal-rock interface strength on crack propagation law of supercritical carbon dioxide fracturing
Abstract Supercritical CO 2 (SC–CO 2) fracturing technology has become a new way of
waterless fracturing of coal seams, which not only changes the fracture structure of coal, but …
waterless fracturing of coal seams, which not only changes the fracture structure of coal, but …
Numerical study of stability of coal pillars under the influence of line of extraction
LS Vinay, RM Bhattacharjee, N Ghosh… - … , Natural Hazards and …, 2022 - Taylor & Francis
In underground coal mining, strata instability is one of the most catastrophic hazards, which
involves sudden and violent dynamic failure of the pillars and overlying strata. Despite …
involves sudden and violent dynamic failure of the pillars and overlying strata. Despite …
Investigation of failure mechanism of inclined coal pillars: numerical modelling and tensorial statistical analysis with field validations
Abstract Analysis of the failure mechanism of inclined coal pillars is one of the complicated
issues. The wide variability of dip angles of inclined coal pillars makes it more complex. The …
issues. The wide variability of dip angles of inclined coal pillars makes it more complex. The …
Study on asymmetric support of anchor cable with C-shaped tube in inclined coal seam roadway
R Shan, T Li, W Liu, Y Chen, S Shi, G Li - Applied Sciences, 2023 - mdpi.com
In view of the complex asymmetric deformation characteristics of inclined coal seam
roadways and the tensed shear failure of anchor cable supports, the asymmetric support …
roadways and the tensed shear failure of anchor cable supports, the asymmetric support …
[HTML][HTML] Experimental study on progressive failure characteristics of strip coal pillar models under different roof and floor conditions
X Qu, Y Chen, D Yin - Case Studies in Construction Materials, 2023 - Elsevier
To study mechanical properties and progressive failure characteristics of strip coal pillar, a
progressive failure monitoring device was developed. The uniaxial compression test of “roof …
progressive failure monitoring device was developed. The uniaxial compression test of “roof …