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摩擦式锚管亦称开缝式锚杆。是我国八十年代初从美国引进的一种新型的全长锚固支护装置。由于它具有许多优越的技术性能和广泛的适应性,所以一经试用就引起了国内地下工程界的广泛关注。随着新奥法施工的逐步推广锚杆支护已越来越广泛地被用于地压控制领域成为加固围岩的主要措施。因此,根据地质坑道的特点,研制和推广这种新型锚管支护装置有十分重要的作用。为此,研矿工艺所地下工程研究室对摩擦式锚管用于坑探工程的适应性进行了调研工作,通过调研与分析认为摩擦式锚管支护在地质勘探坑道中应用是可行的。现将摩擦式锚管的技术分析和调查情况介绍如下。
Friction type anchor pipe is also called slotted anchor. It is a new type of full-length anchor support device imported from the United States in the early 1980s. Due to its superior technical performance and wide adaptability, it has attracted widespread attention from the domestic underground engineering community. With the gradual expansion of the new Austrian construction method, bolt support has been increasingly used in the field of ground pressure control as the main measure for strengthening surrounding rock. Therefore, according to the characteristics of geological tunnels, the development and promotion of this new type of anchor pipe support device has a very important role. For this reason, the underground engineering research laboratory of the Institute of Mining and Mineral Processing conducted investigation and research on the adaptability of the friction anchor pipe used for pit engineering. Through investigation and analysis, it was considered that the application of frictional anchor pipe support in geological exploration pits is feasible. The technical analysis and investigation of the friction anchor pipe are introduced as follows.