Pipe seam type anchor rod drawing test device and method suitable for deep complex environment

Abstract

The invention discloses a pipe seam type anchor rod drawing test device and method suitable for a deep complex environment. The problems that in prior art, testing procedure is complex, anchor rod isindirectly pulled or auxiliary component is not suitable for a size problem are solved; and the beneficial effects are achieved that direct drawing of the anchor rod is realized; the coaxiality is better ensured; therefore, the test precision is improved. According to the invention, the pipe seam type anchor rod drawing test device suitable for a deep complex environment comprises a connecting; the connecting piece can go deep into the pipe seam type anchor rod; at least two sealing pieces used for making contact with the interior of the pipe seam type anchor rod are arranged on the peripheralside of the connecting piece. A glue injection pipe is arranged along the outer side wall of the connecting piece, the outlet end of the glue injection pipe is arranged between every two adjacent sealing pieces, one end of the connecting piece is exposed out of the pipe seam type anchor rod, the end exposed out of the pipe seam type anchor rod is connected with a connecting rod, and the connecting rod is provided with a center hole jack.

Description

technical field [0001] The invention relates to the on-site testing technology of a pipe-seam anchor, in particular to a pipe-seam anchor pulling test device and method suitable for deep complex environments. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] In underground mines, with the increase of operation intensity, the exposed area of ​​ore rock becomes larger. In order to effectively control the instability of surrounding rock, the use of bolt support is gradually increasing. Among them, the slotted anchor bolt is a full-length anchor bolt, which is economical and practical, and is widely used in mines. The three-dimensional part of the pipe-slot bolt is a high-strength steel pipe with longitudinal slits. When installed in a borehole slightly smaller than the diameter of the pipe, it can immediately exert radial pressure on the hole ...

AI Technical Summary

Problems solved by technology

[0006] (1) This method requires professional electricians and welders to work on site, and carries heavy equipment such as electric welding machines, transformers, and power lines, which is inconvenient to operate; in addition, the deep mine environment is complex, and water dripping and dripping often occur, so it is not suitable for live work;

[0007] (2) The use of electric welding will generate electric sparks, which may cause fire accidents

However, in the welding process, it cannot be guaranteed that the external metal rod is coaxial with the anchor rod by close inspection with the naked eye.

In addition, some seam bolts form a certain angle with the rock wall during installation, which undoubtedly increases the difficulty of the welder's work and makes it difficult to ensure the accuracy of measurement

[0009] (4) During the pull-out test, it is easy to break the welding point, not only the pull-out force data cannot be obtained, but also injury accidents may occur

[0010] (5) Using this method, the cost of manpower and material resources is high, the process is complicated, time-consuming, and the test efficiency is low

This approach will firstly increase the difficulty of on-site workers' work; secondly, subject to on-site operating conditions and installation methods, the pre-processed auxiliary components may not be installed or installed in place due to size problems, resulting in the inability to perform subsequent pull-out tests; Otherwise, the components reserved in the pipe body may increase the friction between the anchor rod and the hole wall, resulting in inaccurate measurement results

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