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由于近年来查明了单体和组合锚杆支架相互作用的特性差别,因而确定出解决采深加大后提高巷道稳定性问题的两个途径。其一是除其它措施外要加强锚杆托板的结构,其二是使用短的组合托梁或长的柔性托梁,连接两个或数个锚杆。对苏联和其它国家制定的技术决定进行分析表明,基本上都规定使用边长为0.15～0.2m的正方形托板和0.16×0.4m的矩形托板(留有供锚杆穿入用的直径为17.5～40.6mm的孔),用钢板制作,厚度分别为3～6mm和4～9mm。托板用屈服点为420～560MPal的碳素钢和低合金钢制作,其外侧
Due to the differences in the characteristics of the interaction between the monolith and the composite anchor supporter in recent years, two approaches to solve the problem of improving the stability of the roadway after deepening mining have been determined. One is to strengthen the structure of the anchor plate, among other measures, and the other is to use two or more anchor rods with short composite joists or long flexible joists. An analysis of the technical decisions made by the Soviet Union and other countries shows that it is basically required to use square pallets 0.15-0.2 m in side length and rectangular pallets 0.16 0.16 m 17.5 ~ 40.6mm hole), made of steel, the thickness of 3 ~ 6mm and 4 ~ 9mm. Pallet with a yield point of 420 ~ 560MPal carbon steel and low alloy steel production, its outer side