ArticleScientific reports2024
Unraveling time-dependent roof stability dynamics in Iran's coal mines through laboratory-based rock displacement testing.
Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Integrating NMR and machine learning for pore-type driven rock classification in the heterogeneous Asmari carbonate reservoirs.Scientific reports · 2025Article
- Integrating machine learning and geomorphic indices to assess tectonic geomorphology in the Karoun River Basin, Zagros, SW Iran.Scientific reports · 2025Article
- Challenges of drilling Iran's deepest surface hole in the saddle section of Changuleh oilfield with complex structure and pressure regimes.Scientific reports · 2025Article
- Experimental modeling of changes in geomechanical parameters of reservoir rock during water flooding operations.Scientific reports · 2025Article
- Investigating the effect of hole size, bottom hole temperature, and composition on cement bonding quality of exploratory wells in Iran.Scientific reports · 2024Article
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Authors and funding
6 authors.
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Abstract
Roof stability is a critical concern in coal mines, as the potential for roof collapse poses a significant risk to miners' safety and productivity. Roof stability is heavily influenced by the time-dependent properties of the rock mass above the workings. This study uses rock displacement testing to examine the effect of time-dependent properties on roof stability and resistance reduction in coal mines in Iran. The study employed laboratory-based rock displacement tests on samples collected from coal mines in Iran, subjected to varying stress levels over time, to simulate the gradual deterioration of rock mass strength in underground mining conditions. The samples were monitored for displacement under these conditions to quantify the reduction in roof resistance over time and assess its effect on roof stability. The study found that areas with high stress at equilibrium gradually fail with time, and the stress transfers from the failure zone into deeper solid rock. The results demonstrate that varying viscous parameters can lead to different relaxation behaviors and stress distribution. Furthermore, incorporating strength degradation into numerical simulation can capture the failure under creep conditions and improve the accuracy of predicting time-dependent roof failure. This research aims to enhance safety measures and reduce the risk of collapses by investigating the time-dependent properties of roof stability through rock displacement testing in Iran's coal mines. The study's innovative approach uses numerical simulation based on the viscoelastic-plastic model to simulate the time-dependent behavior of the rock and incorporate strength degradation into the simulation. The results provide valuable insights into the time-dependent behavior of rock mass in coal mines in Iran and contribute to developing strategies for improving roof stability and lessening the chance of roof collapses. The instantaneous elastic strain was 4.35 × 10
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