A Calculation Method of Minimum Buffer Layer Thickness

Abstract

The invention discloses a method for calculating minimum buffer layer thickness, which is characterized by comprising the following steps: a, measuring and calculating to obtain an earth-stone mediumdiameter D, an earth-stone particle non-uniformity coefficient Cu and earth-stone buffer layer compactness S; b, calculating the earth-stone buffer layer compactness S; c, calculating the elastic modulus M of the earth-stone buffer layer according to the characteristic parameters of the earth and stone; d, measuring and calculating to obtain an elastic modulus M1 of an impact object, and calculating a comprehensive elastic modulus E; e, estimating the kinetic energy Ek and an impact clamp theta of the impact object and calculating the impact force F acting on the earth-stone buffer layer; andf, calculating the minimum thickness H of the earth-stone buffer layer according to the impact force F and the elastic modulus M of the earth-stone buffer layer. The method for calculating minimum buffer layer thickness in the invention fully considers the limit value of the minimum thickness of the earth-stone buffer layer, which can not only effectively avoid a protection failure caused by beingsmaller than the limit value, but also reduces the waste of engineering and cost caused by being greater than the limit value, thereby greatly improving the applicability of disaster prevention and mitigation.

Description

technical field [0001] The invention relates to the field of collapse and rockfall prevention engineering, in particular to a calculation method for the minimum buffer layer thickness. Background technique [0002] Collapse and rockfall are natural phenomena that occur in mountainous areas or on road slopes. After landslides and rockfalls occur, huge rocks roll down the hillside or the roadside, causing great damage to nearby residential buildings, factories and other construction facilities, or roads. In order to reduce the influence of the impact force, it is an economical and effective measure to take effective protection of earth-rock buffer layer. The most economical and applicable buffer layer is composed of stones, sand, soil and other materials, and is composed of one or more of them. Therefore, the particle size of different soil-rock buffer layers has different buffering effects, and the buffering effect can be determined by the buffering effect. The elastic modu...

AI Technical Summary

Problems solved by technology

However, the thickness of the buffer layer is not given; if the thickness of the buffer layer is too small, it cannot play the role of buffer, and the protection will fail; if the thickness of the buffer layer is too large, although it can play the role of buffer and the protection is effective, it is wasteful and economical

Images