单体支柱工作面支护质量的监测

Supporting Quality Monitoring and Measuring in Coalface with Hydraulic Single Prop

作者论述了顶底板移近量和支柱活柱缩量的比值与柱缩等之间的内在函数关系;提出了支护质量监测指标确定的方法.

In state run coal mines, the fatal figure due to roof accidents takes 45% of all mine accidents per year and the roof accidents at coalface takes approximately 70 to 80% of the all mine accidents. In the total coalface roof accidents, the roof accidents at coalface with hydranlic single prop will take about 95%. Therefore it is of great significance to have a well roof control in coalface with hydraulic single prop. Based on statistical analysis of field measuring information and lab researches and from a combined coordinate relation ship between the supporting system and material of roof and floor, it has found inner function relationships between roof to floor convergence, the cylinder compression rate of prop, and the cylinder compression.