关键词: 锚杆支护, 拱形托板, 承载力, 适用性

Abstract: For further understanding of the influence of arched structure on steel pallet’s mechanical property, and its bearing applicability when matching with different bolts, two equations of bearing capability relationship of arched pallet was established through elastic mechanics theory and limit equilibrium method analysis of shell structure, in which the five impact parameters were discussed based on support engineering practice．Bearing capability and deformation characteristics of square pallets with different thickness and different arch height were investigated through laboratory loading test．The results have shown that, the pallet bearing capability has a positive growth relationship with its steel plate thickness, proportion of arch height and the bottom circle diameter．Test of bearing capability well verified the correctness of the theoretical relationship, and the size and strength of adjustable ball-pad played a very important role for full bearing capability and support effect of arched pallet．Based on the above studies and the coal industry standard, a reasonable reference table was proposed for matching ordinary anchor bolts specification and different arched pallets’ size, which would have reference value for mines’ support engineering.

Key words: anchor bolt support, arched pallet, bearing capability, applicability