An integral load-bearing structure combined with anchor cable group and active protection net

Abstract

The invention discloses an anchor rope group and active protective net combined integrated bearing structure and belongs to the field of mountain hazard control. The anchor rope group and active protective net combined integrated bearing structure comprises an anchor rope group and an active protective net; horizontal supporting ropes and longitudinal supporting ropes of the active protective net form a plurality of unit grids, an anchor pier is surrounded by each unit grid, and the horizontal supporting ropes and the longitudinal supporting ropes pass through connecting holes in connecting devices and cling to the surface of a slope; auxiliary connecting ropes pass through auxiliary connecting holes in the outer ends of connecting plates of auxiliary connecting devices, one end of each auxiliary connecting rope is connected with each longitudinal supporting rope, and the other end of the auxiliary connecting rope is connected with each horizontal supporting rope; and steel rope nets are connected with the connecting ropes, the longitudinal supporting ropes, the horizontal supporting ropes and sewing ropes and are tensioned on the surface of the slope. According to the anchor rope group and active protective net combined integrated bearing structure, the active protective net on a shallow surface layer and the reinforced anchor rope group on a deep layer are integrated to form an integral stress system, and local stress and integral bearing of any part are realized within an active protective net and anchor rope group integrated stress system, so that the protective capability for shallow surface layer reinforcement and deep layer reinforcement of a mountain is greatly improved.

Description

technical field [0001] The invention belongs to the field of mountain disaster management, in particular to an integral load-bearing structure combining anchor cable groups and active protection nets. Background technique [0002] For high-risk slopes, deep instability can lead to landslides, shallow surface instability can lead to landslides, and both can cause massive damage. Anchor cables are generally used for deep unstable slopes, and active protective nets are generally used for shallow surface unstable slopes. [0003] To solve the two problems of landslides and collapses at the same time, on the one hand, it is necessary to carry out flexible active protection reinforcement on the surface of the mountain, and on the other hand, it is necessary to use prestressed anchor cables to reinforce the deep layer of the slope. [0004] When the prestressed anchor cable is used to strengthen the deep layer of the mountain, the anchor section of the anchor cable is cast togethe...

AI Technical Summary

Problems solved by technology

[0004] When the prestressed anchor cable is used to strengthen the deep layer of the mountain, the anchor section of the anchor cable is cast together with the solid rock in the deep layer of the slope, and the anchor pier of the anchor cable is fastened on the surface of the mountain body to carry out prestressed deep reinforcement of the slope, and then , the active protection net is laid on the slope surface, because the anchor pier protrudes from the slope surface of the mountain, according to the traditional method of laying the active protection net, the active protection net cannot be close to the slope surface of the mountain body, and the active protection net cannot be opposite to the side Applying normal pressure on the surface of the slope cannot restrain and restrain the deformation or movement of the shallow surface rock and soil mass. The gravel on the slope surface will fall and accumulate under the net, and the gravity load of the accumulation will cause the protective net to be torn; at the same time, use the anchor In the mountains where the cable is used for deep reinforcement, the accumulation layer is very thick. In this broken mountain surface or accumulation layer, the anchoring force required by the self-contained shallow surface active protection net anchor is also very lacking.

[0005] The application number is CN201410014127.9, and the application date is January 13, 2014. The title is an invention patent application for the anchor pier type active protection net structure of the broken rock slope, which discloses the anchor pier active protection net structure of the broken rock slope. , but its longitudinal support rope and transverse support rope are actually pressed under the anchor pier at the anchor pier, so the force at the anchor pier cannot be transmitted along the support rope, resulting in the inability to realize the pretension of the support rope and the failure to make the active The protective net is close to the mountain, and the protective net cannot exert normal pressure on the surface of the mountain, so it cannot restrain and inhibit the deformation or movement of the shallow surface rock and soil mass. As the slope gravel falls under the net, local accumulation, accumulation Gravity loads will cause the protective net to be torn

At the same time, it cannot form a pre-tensioned overall force system, and cannot achieve the effect of local force and overall load bearing, and the protection ability is poor

Moreover, since the longitudinal support rope and the transverse support rope are pressed under the anchor pier, when the active protection net is partially damaged, it is difficult to repair it again.

Secondly, since the high-strength steel rope net in the patent application for this invention is a regular square shape, according to the regulations of the anchor cable construction specification, the size of the anchor pier is 600×600mm, 800×800mm and 1000×1000mm, etc., assuming that the size of the anchor pier 600×600mm, then, the suture width around the high-strength steel rope mesh and the longitudinal support rope and the transverse support rope is at least 300mm, the suture gap is too large, and the stress condition is poor

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