An expanded-diameter extrusion friction anchor rod and anchor cable structure

An anchor rod and anchor cable technology, which is used in the installation of anchor rods, infrastructure engineering, construction, etc., can solve the problems of damaged anchor rod work performance, constant resistance instability, poor impact resistance, etc., and achieves easy design, processing and production. On-site installation, stable structure with constant resistance and strong impact resistance
CN109026103BActive Publication Date: 2020-03-17LIAONING TECHNICAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LIAONING TECHNICAL UNIVERSITY
Publication Date
2020-03-17

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Abstract

An expanding extrusion friction anchor rod / anchor cable structure belongs to the technical field of coal and rock mass power supply and soft rock support and includes a sleeve, a large diameter area,an expanding area, a small diameter area, a nut, a tray, a limiting stopper, a rod body, a cable body, a straight groove, a clamp, a guide groove and an anchor. According to the invention, a constantresistance is generated through expanding extrusion and friction between an anchor rod tube expander or an anchor cable tube expander, and a deformation volume is provided for relative slippage of theanchor rod tube expander or the anchor cable tube expander, so that a specific high support constant resistance is provided for a supported surrounding rock so as to make the supported surrounding rock always in a three-direction stressed state and thus to form an annular support pressure arch with a comparatively large thickness. Also, a specific amount of deformation energy and impact energy can be absorbed through axial slippage of the expanding extrusion friction rod / cable structure and the associated deformation of the supported surrounding rock. Finally, effects of constant resistancesupport and relief energy absorption support are achieved and the stability of the supported surrounding rock is ensured in the maximal level.
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Description

technical field

[0001] The invention belongs to the technical field of coal rock mass dynamic support and soft rock support, and in particular relates to a diameter-expanding extrusion friction bolt and anchor cable structure. Background technique

[0002] In coal mines, metal mines, water conservancy, tunnels and other geotechnical engineering, bolts are efficient and widely used active support components. However, with the development of our country's economy, the scale of the project continues to expand, and the geological conditions it faces are becoming more and more complex. In shallow rock mass engineering, under the action of external factors such as earthquakes, human disturbance, water, or internal factors such as rock mass self-expansion, the rock mass loses its bearing capacity, and disasters such as large deformation, landslides, and landslides occur; The rock mass under the stress state is prone to disasters such as large deformation of soft rocks. At the same...

Claims

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