大采深软岩巷道支护优化研究

On the Optimization of Lane Support in Ming Deep and Soft Rock

通过对北二采区轨道下山和北二煤仓里外200m范围做的支护研究,利用软岩支护应采用全长锚固、及时支护、高承载力和较好的可缩性的锚杆。初喷超前支护及时封闭围岩,支护设计以树脂锚杆为支护主体,利用锚索增加支护承载能力,以及钢筋网增加表面刚度。采用锚、网、喷+锚索的联合支护形式,局部加套U钢全断面加固取得了很好的效果。

In this article, the author did researches on the support of the range of 200 meters in the track of the second mining area and the second coal bunker in the north. Soft rock support should use anchorage with full length, timely support, high capacity and better retractable anchor rod. The support should use anchor rod made of resin, use the anchor cable to increase support capacity and use steel net to increase surface stiffness. Using the joint support of anchor, net and anchor cable and local Jacketed U whole section of steel reinforcement achieved good results.