Subtopic Deep Dive
Coal Seam Stability Assessment
Research Guide
What is Coal Seam Stability Assessment?
Coal Seam Stability Assessment evaluates roof stability, pillar design, and floor heave in coal seams using rock mechanics criteria, numerical modeling, and fuzzy comprehensive evaluation techniques.
This subtopic addresses geotechnical challenges in underground coal mining through methods like roof bolting and support technologies for deep roadways (Peng, 1978; Kang, 2014). Key works include mechanical property studies at depths over 1000 m (Xie et al., 2018) and reviews of coal bump mechanisms (Yao-don, 2014). Over 10 highly cited papers from 1978-2019 cover ground control and dynamic disasters, with Peng (1978) at 251 citations.
Why It Matters
Coal seam stability assessment ensures safe underground extraction by predicting subsidence and controlling outbursts, reducing fatalities in deep mines (Peng, 1978; Xie et al., 2018). It guides pillar design and roadway support in complex conditions, as reviewed by Kang (2014) for deformation analysis in five roadway types. Yuan (2016) highlights applications in multi-seam mining with high gas content, preventing coal-gas disasters in regions like Huainan, China (Wang and Du, 2019).
Key Research Challenges
Deep Mining Stress Effects
High in-situ stresses at 1000 m depths alter mechanical properties, complicating stability prediction (Xie et al., 2018). Rock responses under extreme conditions lead to bumps and outbursts (Yao-don, 2014). Numerical models struggle with dynamic stress redistribution.
Complex Roadway Deformation
Surrounding rocks in deep roadways deform variably across five geological types, requiring tailored supports (Kang, 2014). Soft seams with high gas exacerbate instability (Yuan, 2016). Geological effects like faults challenge roof stability classification (Peng, 1978).
Outburst Dynamic Prediction
Coal-gas outbursts form complex dynamic systems ejecting coal and gas into roadways (Fan et al., 2016). Prediction models must integrate gas content, permeability, and stress (Wang and Du, 2019). Water inrushes from aquifers add failure risks under seams (Zhang, 2005).
Essential Papers
Study on the Mechanical Properties and Mechanical Response of Coal Mining at 1000 m or Deeper
Heping Xie, Mingzhong Gao, Ru Zhang et al. · 2018 · Rock Mechanics and Rock Engineering · 349 citations
Subsidence - Occurrence, Prediction and Control
· 1989 · Developments in geotechnical engineering · 327 citations
Coal-gas compound dynamic disasters in China: A review
Kai Wang, Feng Du · 2019 · Process Safety and Environmental Protection · 258 citations
Coal mine ground control
Syd S. Peng · 1978 · Medical Entomology and Zoology · 251 citations
Mine Layouts and Ground Control Practices in Underground Coal Mines Common Ground Control Problems in Underground Coal Mines Rock Properties and in situ Stresses Geological Effects and Roof Stabili...
Coal and gas outburst dynamic system
Chaojun Fan, Sheng Li, Mingkun Luo et al. · 2016 · International Journal of Mining Science and Technology · 249 citations
Coal and gas outburst is an extremely complex dynamic disaster in coal mine production process which will damage casualties and equipment facilities, and disorder the ventilation system by suddenly...
Investigations of water inrushes from aquifers under coal seams
Jincai Zhang · 2005 · International Journal of Rock Mechanics and Mining Sciences · 225 citations
The height of fractured water-conducting zone in undermined rock strata
Xiexing Miao, Ximin Cui, Jinan Wang et al. · 2011 · Engineering Geology · 223 citations
Reading Guide
Foundational Papers
Start with Peng (1978) for core ground control practices including roof stability classification; then Zhang (2005) on water inrushes under seams and Kang (2014) on roadway supports.
Recent Advances
Study Xie et al. (2018) for deep mining mechanics; Wang and Du (2019) on coal-gas disasters; Yuan (2016) for outburst control in multi-seam mining.
Core Methods
Core techniques are rock bolting (Peng, 1978), numerical modeling of fractured zones (Miao et al., 2011), and support design for five roadway types (Kang, 2014).
How PapersFlow Helps You Research Coal Seam Stability Assessment
Discover & Search
Research Agent uses searchPapers and citationGraph to map 250+ papers citing Peng (1978) on coal mine ground control, revealing clusters around roof stability and bolting. exaSearch finds recent works like Xie et al. (2018) on deep mining mechanics; findSimilarPapers extends to Kang (2014) support technologies.
Analyze & Verify
Analysis Agent applies readPaperContent to extract deformation characteristics from Kang (2014), then verifyResponse with CoVe checks claims against Peng (1978). runPythonAnalysis in sandbox verifies stress models from Xie et al. (2018) using NumPy for mechanical property simulations, with GRADE scoring evidence strength on outburst risks.
Synthesize & Write
Synthesis Agent detects gaps in deep roadway supports beyond Kang (2014), flagging contradictions between Xie et al. (2018) and Yao-don (2014) on bump mechanisms. Writing Agent uses latexEditText, latexSyncCitations for Peng (1978), and latexCompile to generate stability reports; exportMermaid diagrams pillar design flows.
Use Cases
"Analyze stress data from deep coal mining papers with Python plots."
Research Agent → searchPapers('deep coal mining stress') → Analysis Agent → readPaperContent(Xie et al. 2018) → runPythonAnalysis(pandas plot of mechanical properties) → matplotlib stress-strain graphs for researcher.
"Write LaTeX report on roadway support comparing Kang and Peng."
Synthesis Agent → gap detection(Kang 2014 vs Peng 1978) → Writing Agent → latexEditText(draft) → latexSyncCitations → latexCompile → PDF report with synced references for researcher.
"Find GitHub repos with coal stability numerical models."
Research Agent → searchPapers('coal seam numerical modeling') → Code Discovery → paperExtractUrls → paperFindGithubRepo → githubRepoInspect → Verified model codes from similar papers for researcher.
Automated Workflows
Deep Research workflow conducts systematic review of 50+ papers on subsidence (Peng 1978 onward), chaining searchPapers → citationGraph → structured report with GRADE scores. DeepScan applies 7-step analysis to Xie et al. (2018) mechanics, with CoVe checkpoints verifying deep stress claims. Theorizer generates hypotheses on outburst prevention from Fan et al. (2016) and Yuan (2016) dynamics.
Frequently Asked Questions
What is coal seam stability assessment?
It evaluates roof stability, pillar design, and floor heave using rock mechanics and modeling (Peng, 1978; Kang, 2014).
What are main methods used?
Methods include roof bolting, numerical modeling for roadways, and dynamic system analysis for outbursts (Xie et al., 2018; Fan et al., 2016).
What are key papers?
Peng (1978, 251 citations) on ground control; Xie et al. (2018, 349 citations) on deep mechanics; Kang (2014, 211 citations) on supports.
What open problems exist?
Predicting outbursts in high-stress soft seams and tailoring supports for complex roadways remain challenging (Yuan, 2016; Yao-don, 2014).
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Part of the Geoscience and Mining Technology Research Guide