Rigid-flexible combined type high and steep slope rockfall protection structure and construction method thereof

By combining rigid pile plate-type stone blocking walls and flexible passive protective nets, a multi-layer protection system is formed, which solves the problems of poor energy dissipation of traditional protection measures on rockfall impact and limited protection capabilities, and significantly improves the protection effect of rockfall falling on high steep slopes.

CN119711376APending Publication Date: 2025-03-28CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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Patent Information

Application Number
CN202411782901.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-06
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

In traditional rockfall protection measures, a single rigid structure has poor effect on rockfall impact energy dissipation, while a single flexible protective net has limited protection ability, making it difficult to effectively deal with high-energy rockfall.

Method used

A rigid-flexible combination high-steep slope rock-fall protection structure is adopted, combined with a rigid pile-type stone-blocking wall and a flexible passive protective net. A dry-blocking gravel buffer layer and rock-falling groove are set on the back of the pile-type stone-blocking wall, and a passive protective net is installed above the pile-type stone-blocking wall to form a multi-layer protection system.

Benefits of technology

The protection effect of falling rocks has been greatly improved, ensuring the safety and stability of the slope area, especially when facing high-energy falling rocks, improving the protection effect and structural stability, reducing the harm of falling rocks to the lower area.

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Abstract

The invention relates to a rigid-flexible combined type high and steep slope rockfall protection structure and a construction method thereof. The method comprises the steps that slope cutting treatment is conducted on the high and steep slope, a plurality of horizontal flat areas are formed near the slope surface after slope cutting, and transition inclined flat areas are formed between the horizontal flat areas adjacent in height; stone blocking wall anchoring piles are arranged in the flat area, rope anchor rods and bases are preset on the top, and transversely continuous prefabricated concrete slabs are arranged on the back faces of the stone blocking wall anchoring piles and are poured into a whole with the stone blocking wall anchoring piles; laying a dry masonry rubble buffer layer on the back surface of the precast concrete slab, and digging a stone falling groove downwards behind the dry masonry rubble buffer layer; steel columns are installed on the base, and a flexible passive protective net is hung between the steel columns. The rigid pile plate type stone blocking wall and the flexible passive protection net are combined to form a protection whole, and the protection effect and the structural stability when high-energy rockfall occurs are effectively improved.
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