An Anchor Cable Yield Device Realizing Working Load Visualization

Abstract

An anchor cable yield device capable of realizing working load visualization comprises a pressure plate, a limiting cylinder, a yield metal column, a pressure plate and an anchor cable lock sequentially sleeved on an anchor cable. A reflective stripe group is attached to the upper portion of the outer wall of the limiting cylinder, and reflective stripes are attached to the outer wall of the pressure plate. The section, attached with the reflective stripe group, of the limiting cylinder is provided with a plurality of observation slots, the relative positions of the reflective stripes on the outer wall of the pressure plate and the reflective stripe group on the outer wall of the limiting cylinder can be observed through the observation slots, and accordingly real-time working load conditions of the anchor cable can be visually judged. By means of the anchor cable lock applying pretightening force to the anchor cable, working load of the anchor cable in yield deformation can be controlled effectively to be within the ultimate load of the anchor cable. The anchor cable yield device is simple in structure, easy for field mounting, convenient to maintain and effective in use.

Description

technical field [0001] The invention relates to an anchor cable yielding device for realizing working load visualization, and is especially suitable for yielding support of roadways and caverns with relatively large ground stress in soft rock and as well as real-time visual monitoring of the working load of the supporting structure. Background technique [0002] At present, anchor cable support technology has been widely used in geotechnical engineering reinforcement in mining and water conservancy and hydropower development. Especially in coal mine underground roadway support, the proportion of anchor cable support reaches more than 70%. For roadways with good geological conditions and in-situ stress conditions, the safety of surrounding rock can be guaranteed by the active support of anchor cables; but for roadways with complex and difficult support, such as soft rock or roadways with relatively large in-situ stress, only With the supporting capacity of a single anchor ca...

AI Technical Summary

Problems solved by technology

At present, the monitoring of the working load of the anchor cable mainly depends on the hydraulic pillow, but due to the high price of the hydraulic pillow, it cannot be widely used at present. At the same time, the readings of the hydraulic pillow are not easy to observe, and the observation data must be converted to compare with the design working load of the anchor cable. , front-line workers are not easy to grasp

Therefore, there is still a lack of methods to effectively realize the real-time visual monitoring of anchor cable working load

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