南阳坡6106开切眼CO2致裂强制放顶实验研究

Experimental Study on Forced Caving of CO2 Cracking in 6106 of Nanyangpo Mine

本文以南阳坡6106开切眼顶板为实验对象,对6106开切眼顶板采取打眼CO2致裂实验,6106工作面开切眼实施CO2致裂后,经过30 min通风后检测开切眼处瓦斯浓度为0.1%,CO2浓度为0.5%,其他有毒有害气体均未检测出超限,同时经过检测工作面液压支架完好,液压支架向前推移时顶板自由垮落,工作面矿压显现不明显。

The 6106 open-cut roof of Nanyangpo Mine was used as the experimental object.The 6106 open-cut roof was subjected to CO2 cracking test.After 6106 working face was opened,CO2 cracking was carried out.After 30 minutes of ventilation,the open cut was detected.The gas concentration was 0.1%,the CO2 concentration 0.5%,and other toxic and harmful gases were not detected to exceed the limit.At the same time,the hydraulic support of the working face was intact,the top plate was freely collapsed when the hydraulic support moved forward,and the mining pressure on the working surface was not obvious.