An integrated production process of high-standard transition material for rockfill dams

Abstract

An integrated production technology of a rock-fill dam high-standard transition material comprises the following steps: carrying out blasting exploitation on stones in an economic unit consumption manner; carrying out coarse crushing and middle crushing on the blasted stones, wherein the middle crushed stones account for 40-60% of the amount of the coarse crushed stones; carrying out mixing conveying on 10-40% of the coarse crushed stones and 40-60% of the middle crushed stones; and transporting the stones to a rock-fill dam construction filed through a self-unloading automobile. The technology solves the disadvantages of present blasting direct exploitation methods and sand and stone aggregate mixing methods, guarantees the quality of the transition material, and also has the characteristics of great reduction of the material field blasting cost, improvement of the bursting charge utilization rate, improvement of the construction benefit, and very substantial economic benefit.

Description

technical field [0001] The invention relates to a construction technology of water conservancy and hydropower projects, in particular to an integrated production technology of high-standard transition materials for rockfill dams. Background technique [0002] The transition material is filled between the cushion material (reverse filter material) and the main rockfill area in the rockfill dam of the water conservancy and hydropower project. anti-filter protection) function. Therefore, the design gradation requirements of transition materials are continuous and the indicators are relatively strict. [0003] According to the data at home and abroad, there are two main production processes for rockfill dam transition materials: [0004] 1. Blasting direct mining method: reasonable blasting parameters are determined through experiments in the quarry, and the transition material is produced by direct blasting in the quarry. This method has high requirements on the terrain and ...

AI Technical Summary

Problems solved by technology

This method of blending generally adopts the technology of flat laying and vertical mining to ensure the continuous mixing effect and gradation, and the production of transition materials in this method needs to occupy a certain area of ​​blending site, and the sand and gravel aggregate blended is expensive , higher process cost

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