深部高应力极软岩巷道锚注支护技术研究

随着矿山开采的大规模进行和采深的加大,深部高应力极软岩巷道支护问题日益严重。基于深部高应力极软岩巷道国内外支护现状的分析,并针对其破坏特点,提出了以内注浆锚杆为核心的锚注支护体系,来解决深部高应力极软岩巷道支护难题。井下试验表明:锚注支护不仅保持了深部高应力极软岩巷道的稳定,而且提高了施工速度,节约了支护成本,技术经济效益十分显著,具有广阔的推广应用前景。

STUDY ON MECHANISMS AND TECHNOLOGY FOR BOLTING AND GROUTING IN SPECIAL SOFT ROCK ROADWAYS UNDER HIGH STRESS

With the large-scale exploitation performance and deep mining,the support problems of special soft rock roadways under high stress become increasingly serious. Based on the analysis of present supporting situation for special soft rock roadways under high stress,the bolting and grouting support systems to solve supporting problems for special soft rock roadways under high stress are discussed. Experiments in the mine indicate that bolting and grouting supports can keep the stability of special soft rock roadways under high stress,and construction velocity is increased and the supporting cost can be reduced. Therefore,it shows that the bolting and grouting support systems have a brilliant prospect in practice.