一、托板的种类固定锚杆用的托板按其使用目的而有很多种。一般来说,正如图1所示,使用最多的有平面托板和球面托板两种。在这两种托板中,由于球面托板需要将固定锚杆按其岩石表面角度进行设置,所以该托板的规格种类及使用量都很少。因此,在本试验中,主要着眼于平面托板,而对球面托板只作以适当的考虑。关于托板的材质,一般采用日本工业规格JIS-G-3101普通用的压延钢 First, the type of pallet Fixed anchor pallets used according to their purpose and there are many. In general, as shown in Figure 1, there are two kinds of flat pallet and spherical pallet used most. In both pallets, the pallets are of a very small size and use, due to the fact that the pallets need to be set with rock bolts at their rock surfaces. Therefore, in this test, the main focus on the plane pallet, spherical pallet only for due consideration. For the material of the pallet, generally, the Japanese Industrial Specification JIS-G-3101 is used for ordinary rolled steel