新源矿2091回风巷支护效果实测分析

Analysis of actual measurement of support effect of 2091 air return roadway in Xinyuan Mine

为分析新源煤业2091工作面回风巷道的支护效果,采用现场实测数据分析的方式进行研究。首先根据巷道观测的内容对巷道观测设备进行了科学选型,并设计了合理的监测方案。对观测数据进行统计分析和绘图分析,通过加强支护系统的强度来抑制围岩的移动与破坏,保持围岩强度,形成支护构件与围岩共同承载体系;应用高预紧力强力一次支护系统是合理的,有效减少了顶板的下沉变形。巷道采用见顶见底掘进采用高预紧力强力一次支护系统,与巷道沿底掘留顶煤相对,支护系统显著减少了围岩的移动与破坏,巷帮的完整很好的抑制了顶板的下沉,保证了顶板的整体性。

In order to analyze the support effect of the air return roadway in the 2091 working face of Xinyuan Coal Industry,the method of on-site measured data analysis was used for research.First,according to the content of the roadway observation,a scientific selection of the roadway observation equipment was carried out,and a reasonable monitoring plan was designed.Statistical analysis and drawing analysis on the observation data were performed,the movement and damage of the surrounding rock was restrained by fully strengthening the supporting system,the strength of the surrounding rock was maintained,and a common bearing system of the supporting components and the surrounding rock was formed,with high pre-tension force at one time.The support system was reasonable and effectively reduced the deformation of the roof;the roadway adopted top-bottom mining and a high pre-tightening and strong primary support system.Compared with the roadway driving along the bottom and retaining the top coal,the support system significantly reduced the movement and destruction of the surrounding rock,and the integrity of the road ledge restrains the sinking of the roof,with integrity of the roof.