A tunnel high steep slope dangerous rock fall protection structure and construction method

By setting up protective structures of blocking force networks, guide networks and support columns on high and steep slopes, the problems of difficulty and high cost of rockfall protection for dangerous rockfall protection on medium and high and steep slopes in the existing technology have been solved, and effective rockfall protection and construction are achieved.

CN111236276BActive Publication Date: 2025-03-18CHINA RAILWAY ERYUAN ENGINEERING GROUP CO LTD
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Patent Information

Application Number
CN202010159159.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-03-09
Publication Date
2025-03-18
Estimated Expiration
2040-03-09

AI Technical Summary

Technical Problem

The existing technology has difficulty in construction, high cost and is not conducive to promotion in the protection of dangerous rocks on high steep slopes.

Method used

The protective structure including the blocking force network, the guide net and the support column is adopted. The blocking force network and the guide net are fixed through the support column. The inclined blocking force network is used to guide the falling rock to slide to the outside of the tunnel opening. The guide net guides the falling rock to the three-dimensional space formed by the support column, the blocking force network and the guide net.

Benefits of technology

It has achieved effective protection against falling rocks with dangerous rocks, simple, economical and environmentally friendly construction, reducing project investment and construction difficulty, and conducive to promotion and application.

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Abstract

The present invention relates to the field of geotechnical engineering, and specifically to a protective structure and construction method for dangerous rockfall on a high and steep slope of a tunnel, the protective structure comprising a plurality of support columns, a blocking force net and a guide net; the support columns are arranged on the slope above the tunnel opening, and are used to fix the blocking force net and the guide net; the two sides of the blocking force net are fixed on the support columns, and the blocking force net is inclined relative to the horizontal to guide the falling rocks to slide to the outside of the tunnel opening; the bottom side of the blocking force net is connected to the slope; the guide net covers the top side of the blocking force net, and is fixedly connected to the top of the support column and the blocking force net to close the direction of one end of the tunnel opening. The present invention divides the slope surface into a plurality of block-shaped protective sections on the steep slope through the support columns, the blocking force net and the guide net; after the dangerous rock falls in each block, it only acts on the protective structure in the block, and the impact of the dangerous rock falls on the support column and the blocking force net is differentiated, and the protective effect is good, safe and reliable.
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