摘要
本文在阐述管缝式锚杵的力学模型与基本公式的基础上,指出目前广泛采用的φ38～45的管缝式锚杄存在着结构参数不合理,耗钢量大,成本较高等问题。文章详细分析了使用小直径锚杄(φ29～32mm)的优越性,与通常使用的大直径锚杄相比,不仅节约钢材、降低成本,而且可以加快钻孔速度和提高锚固力。文章给出了小直径管缝式锚杄结构参数的计算公式和最佳参数,并指出推广应用中尚待解决的工艺和设备问题。小直径管缝式锚杄的推广应用,将是我国矿山支护技术的一项重大改革。
In this paper, the disadvantages of the common friction anchored dowe with 38~45mm diameter, such as the unreasonable parameters of its structure, a larger drain on steel material and higher cost, have been discussed based on the mechanical model and the analytical solutions of this type of bolt. Comparison with those disadvantages, the friction anchored dowel with smaller diameter (29~32mm) has appropriate advantages, such as saving steel material, cutting down cost, picking up the speed of drilling holes and increasing the anchorage of the bolts. The formulations for the structure parameter of a friction anchored dowel with smaller diameter have been developed, and the problems on the technological requirements and the equipments in application of the bolt, which should be solved, have been discussed carefully.
出处
《中国矿业》
1993年第3期49-53,共5页
China Mining Magazine
关键词
锚杆
管缝式锚杆
小直径
Bolt, Friction anchored dowel, Friction anchored dowel with smaller diameter
