后溜宽度与顶煤回收率的相关性研究

Correlation Analysis of Backward Width and Recovery of Top-Coal

根据顶煤的放出规律和放煤工艺,通过分析采放比、放煤步距等开采工艺参数,结合后溜结构参数和性能分析,研究后溜宽度与顶煤回收率的相关性。工作面的顶煤采出率与工作面的采放工艺与后部输送宽度有密切的关系,通过工艺参数分析把放煤工艺与后溜宽度相接合地定量分析,再由其相关性分析选择适当的后溜宽度,提高结构的合理性,进而提高顶煤的回收率,减少资源损失,提高经济效益。

Based on the drawing law and caving coal craft of top-coal,the study analyzes some craft parameters（such as mining-caving ratio,interval,etc）,backward structure parameters and performance to find out the correlation between backward width and recovery of top-coal.The top-coal recovery ratio has close relationship with the mining and caving craft and backward transporting width.By the quantitative analysis and correlation analysis of caving craft and backward width,the paper presents suitable backward width,improves the structure,increases the top-coal recovery ratio,decreases the waste of resources and then raises the economic benefits.