A design method for landslide and rockfall protection based on 3D laser scanning

Abstract

The invention discloses a landslide and rockfall protection design method based on three-dimensional laser scanning, comprising the following steps: S1. collection of three-dimensional topographical data; S2. three-dimensional rockfall simulation without protection; S3. preliminarily planning the installation position of a passive protection system; S4. Three-dimensional rockfall simulation with protection; S5. Statistics Based on the results of step S4, count the number of rockfalls after interception under each working condition, that is, the interception rate of rockfalls IR, the energy rate of escaping rockfalls ERER and the cost of the protective net Cost: S6. Protection effect Quantitative analysis: determine a new quantitative method based on IR, ERER and Cost to evaluate the passive protection net; S7. Determine the protection scheme: select the appropriate installation position of the protection net according to the comprehensive level of the protection net and the actual engineering needs. The present invention selects the site of the optimal rockfall protection net based on the interception rate IR, the remaining rockfall energy rate ERER and the cost Cost, so as to evaluate the protection efficiency and cost of passive protection nets with different site selection positions, and screen out the optimal installation position to achieve low cost. Cost-effective, high-efficiency protection system design effect.

Description

Technical field [0001] The present invention relates to falling stone protection, and more particularly to a landslide falling stone protection design method based on three-dimensional laser scanning. Background technique [0002] The falling stone is a natural disaster that is universal in the mountains. The falling stone refers to the orpole on the hillside, the gravel on the cliff is grounded by earthquake, heavy rainfall, and weathering effects from the original position, and will stop after a series of bouncing, scroll and sliding. It is characterized by a fast speed, high energy, short exercise time, high suddenness, strong randomness, not easy to monitor, it is not easy to be aware, usually cause huge damage to personnel, vehicles, construction facilities on its sports trajectory. Therefore, it is necessary to protect the decolorite in the high-risk area of ​​the falling stone. At present, the protective falling stone usually has two means: [0003] I. Active protection sy...

AI Technical Summary

Problems solved by technology

[0008] It can be seen from the above that whether it is two-dimensional rockfall simulation or on-site manual site selection, the traditional passive protection system site selection method is mainly based on the experience of the designer, which is greatly disturbed by human factors and the implementation standards are not uniform

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