ScholarLens Back to search
2012•Coal Mining TechnologyRequires access

Influence Factors of Top-coal Caving Ratio in Full-mechanized Caving Mining Extremely-thick Coal-seam

Zongchao Li

Open publisher page 1 citations

Abstract

With PFC2D software,this paper simulated top-coal caving rule in full-mechanized caving mining extremely thick coal-seam in Jindi Colliery,Xingxian,Shanxi Province,and analyzed influence factors of top-coal caving ratio.Results showed that with mining height added,top-coal caving ratio reduced.The influence of shield dip of powered support on caving ratio was analyzed.3m was thought as rational mining height to reach higher top-coal caving ration and mining efficiency by monitoring speed-time curve and arch-form frequency during coal and waste caving procedure.In actual mining,mining parameters including mining height was 3m,ratio of mining and caving was 1∶3,coal cutter web was 0.8m,mining two and caving one obtained higher top-coal recovery,which showed these parameters could be adopted in this mining face and those with similar conditions.

About this research paper

What this paper is about

With PFC2D software,this paper simulated top-coal caving rule in full-mechanized caving mining extremely thick coal-seam in Jindi Colliery,Xingxian,Shanxi Province,and analyzed influence factors of top-coal caving ratio.Results showed that with mining height added,top-coal caving ratio reduced.The influence of shield dip of powered support on caving ratio was analyzed.3m was thought as rational mining height to reach higher top-coal caving ration and mining efficiency by monitoring speed-time curve and arch-form frequency during coal and waste caving procedure.In actual mining,mining parameters including mining height was 3m,ratio of mining and caving was 1∶3,coal cutter web was 0.8m,mining two and caving one obtained higher top-coal recovery,which showed these parameters could be adopted in this mining face and those with similar conditions.

Why it matters

OpenAlex reports 1 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

With PFC2D software,this paper simulated top-coal caving rule in full-mechanized caving mining extremely thick coal-seam in Jindi Colliery,Xingxian,Shanxi Province,and analyzed influence factors of top-coal caving ratio.Results showed that with mining height added,top-coal caving ratio reduced.The influence of shield dip of powered support on caving ratio was analyzed.3m was thought as rational mining height to reach higher top-coal caving ration and mining efficiency by monitoring speed-time curve and arch-form frequency during coal and waste caving procedure.In actual mining,mining parameters including mining height was 3m,ratio of mining and caving was 1∶3,coal cutter web was 0.8m,mining two and caving one obtained higher top-coal recovery,which showed these parameters could be adopted in this mining face and those with similar conditions.

Key concepts: Coal, Mining engineering, Coal mining, Engineering, Longwall mining, Hard coal, Waste management

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Influence Factors of Top-coal Caving Ratio in Full-mechanized Caving Mining Extremely-thick Coal-seam — Research Paper | ScholarLens