Blending construction method of blended gravelly soil for dam watertight core

Abstract

The invention relates to a bending construction method of blended gravelly soil for a dam watertight core. In the method, clay of qualified blending raw materials is supplied to an aggregate bin, and grave blending stones are supplied by a finished product stock dump; the batchings of both the clay and the grave blending stones are dynamically metered and controlled by an electronic belt scale through a vibration feeder to strictly control the blending proportion; the batching is finished by the vibration feeder, and a belt conveyer is used for mixing for multiple times and naturally stockpiling; when supplying the materials, a digging and loading machine is used for digging and loading to ensure that the soil and the stones are sufficiently mixed, and the mixing quality is high. The method can prevent a blending material from being repeatedly ground before supplying, is convenient for controlling the mechanical property index of the soil material, reduces the fuel oil consumption of vehicles and the exhaust emission, saves the labor force, improves the construction efficiency, reduces the building of construction tributary roads, reduces the total life cycle cost, has convenient and fast recovery, is beneficial to high-intensity filling construction, has flexible production, material preparation and supplying region adjustment and continuous production and material supply andmeets the requirement of a short-time superstrong peak.

Description

technical field [0001] The invention relates to a dam anti-seepage core wall mixed gravel soil mixing construction method. Background technique [0002] The core wall of the core rockfill dam is mixed with gravel soil, the total amount is about several million cubic meters, and the mixing ratio is clay material: gravel material = 65:35 in parts by weight. [0003] The mixing construction scheme is usually a flat laying and vertical mining mixing scheme, that is, a dump truck is used to pave horizontally and interlayer at the mixing site, and the vertical mining is mixed. The clay material and gravel material are transported by dump trucks, layered in proportion, leveled by bulldozers, and vertically excavated by excavators and mixed evenly. During the preparation process, the thickness of the paving material is controlled, and the moisture content is adjusted according to regulations. When laying the material, first lay the gravel material. When paving gravel materials, u...

AI Technical Summary

Problems solved by technology

[0004] This construction method makes it difficult to control the mechanical performance indicators due to the repeated rolling of the soil by the vehicle, and the fuel consumption of the vehicle is large, the exhaust gas emission is high, the efficiency is low, the labor is wasted, and the material supply cannot be supplied during high-intensity construction.

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