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Integrated production technology of rock-fill dam high-standard transition material

A production process and transition material technology, which is applied in open-pit mine mining, grain processing, blasting, etc., can solve the problems of high sand and gravel aggregate price, high process cost, and occupancy, so as to reduce construction costs and achieve significant economic benefits. The effect of gradation continuum

Active Publication Date: 2015-04-01
SINOHYDRO BUREAU 5
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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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  • Integrated production technology of rock-fill dam high-standard transition material
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  • Integrated production technology of rock-fill dam high-standard transition material

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Embodiment Construction

[0035] In order to better illustrate the inventiveness of this method, the specific implementation of the present invention will be further described below in conjunction with engineering application examples.

[0036] The dam crest elevation of the gravel earth core wall dam project of the Dadu River Changheba Hydropower Station is 1697m, the maximum dam height is 240m, and the filling volume of the dam is about 33 million cubic meters, of which the filling volume of the dam transition material is 2.46 million m 3 .

[0037] The maximum particle size of the transition material is not more than 400mm, the particle content of less than 0.075mm is not more than 3%, the particle content of less than 5mm is not more than 17%, not less than 4%, D15≤20mm.

[0038] Due to the poor explosiveness of the rock in the stockyard, coupled with high standard design requirements. The production of transitional materials in the early stage of the Changheba project is obtained by mixing sand a...

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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 ...

Claims

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Application Information

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IPC IPC(8): B02C21/00E21C47/10F42D3/04
CPCB02C21/00E21C47/10F42D3/04
Inventor 李法海薛凯周广稳韩兴郑正勤熊亮陈曦曹海君叶伟
Owner SINOHYDRO BUREAU 5
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