论文部分内容阅读
最近,在利用高压水技术加固围岩方面,瑞典亚特拉斯科普科公司研制了一种涨管式锚杆。它与美国英格索兰公司的缝管式锚杆一样,也是一种管式全长锚固摩擦锚杆。 一、结构与原理 涨管式锚杆由锚杆杯体(涨管)、安装卡头和高压水泵组成。锚杆杆体用44毫米钢管制作,它的外径被挤压到O28毫米左右,锚杆体两端焊上短节密封套筒(图1),套筒上一端钻有小孔,连通杆体内腔。安装涨管式钻杆时,高压水通过套筒的钻孔进入杆体内腔,在高压水作用下,杆体膨胀挤在锚孔中。由于锚杆孔直径比杆体的原来直径小,
More recently, Atlas Copco Sweden has developed a tube-up anchor for the reinforcement of surrounding rock with high-pressure water technology. It is with the United States Ingersoll Rand suture-type anchor, is also a full-length tubular anchor bolt. First, the structure and principle Rose tube anchor by the cup body (up tube), the installation of the first card and high pressure pump. Anchor rod body made of 44 mm steel tube, its outer diameter is extruded to about O28 mm, welded on both ends of the anchor rod seal sleeve short sleeve (Figure 1), the sleeve has a small hole drilled at one end, connecting rod body Cavity. When installing upturned drill pipe, the high pressure water enters the rod body cavity through the bore of the sleeve. Under the action of high pressure water, the rod body expands and contracts in the anchor hole. As the bolt hole diameter smaller than the original diameter of the rod body,