Throwing type tough buffer net unit for rockfall protection and design method of critical throwing angle of throwing type tough buffer net unit

Abstract

The invention provides a throwing type tough buffer net unit for rockfall protection and a design method of a critical throwing angle of the throwing type tough buffer net unit. The throwing type tough buffer net unit comprises a cable supporting column, a supporting rope and a protective net, wherein the top end of the cable supporting column is provided with a sliding device, and the bottom end of the cable supporting column is connected to a foundation structure through a hinge support; the supporting rope is connected to the sliding device of the cable supporting column in a sliding mode, a spring type buffer is arranged at the end of the supporting rope, and the spring type buffer is obliquely anchored to the rock mass base plane near the protective structure; and the protective net is obliquely tied and hung on the supporting rope through connecting pieces. By adjusting the height difference between the cable supporting columns, the paving inclination angle of the protective net is adjusted to the net piece critical throwing angle thetamin, and then the falling stone throwing track is controlled. Compared with the prior art, the throwing type tough buffer net unit improves the shape restoration of a protection unit, system toughness and damping are both considered, and the falling stone impact force can be effectively relieved; and meanwhile, through the design of controlling the critical throwing angle, falling stone throwing is controlled.

Description

technical field [0001] The invention relates to the field of slope geological disaster protection, in particular to a throwing type ductile buffer net unit and a design method for rockfall protection sheds, which are suitable for collapse and rockfall protection in the fields of transportation, land and mines. Background technique [0002] Two-thirds of China's land is mountainous, and geological disasters such as falling rocks and landslides have occurred frequently since ancient times, seriously threatening the safety of people's lives and property. For mountainous roads or bridges and other road sections that have a certain demand for road traffic capacity, once a landslide disaster occurs, it is easy to cause road blockage and traffic difficulties, which seriously affects emergency rescue and traffic recovery. [0003] In the traditional flexible protection technology, the inclination angle of the flexible net is designed based on experience. Although it can intercept fa...

AI Technical Summary

Problems solved by technology

For mountainous roads or bridges and other road sections that have a certain demand for road traffic capacity, once a landslide disaster occurs, it is easy to cause road blockage and traffic difficulties, seriously affecting emergency rescue and traffic recovery

[0003] In the traditional flexible protection technology, the inclination angle of the flexible net is designed based on experience. Although it can intercept falling rocks, after a period of use, the falling rocks will naturally accumulate on the flexible net and need to be cleaned manually, otherwise the efficacy will be greatly reduced. Due to the flexible net setting Most of the areas are in the wild, with high mountains and long roads, which makes rockfall cleaning and structural maintenance difficult, and the recoverability of the flexible protection system is relatively poor.

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