Gravel soil belt conveyor end water adding device and process

Abstract

The invention discloses a gravel soil belt conveyor end water adding device and process. The gravel soil belt conveyor end water adding device comprises a feeding conveying rubber belt serving as soilconveying equipment, water content detection equipment is carried on the feeding conveying rubber belt, a water spraying nozzle is installed on a steel frame at a blanking end of the feeding conveying rubber belt, the water spraying nozzle is connected with a water conveying pipe, and automatic water adding control equipment is arranged on the water conveying pipe; a material collecting hopper isarranged below the blanking end of the feeding conveying rubber belt and the water spraying nozzle, and materials form a stuffy material pile below the material collecting hopper. According to the invention, the homogenization of the gravel soil material and the rapid water addition are realized. In addition, the soil material closing time is shortened, and water is added for large-scale production of soil materials.

Description

technical field [0001] The invention relates to a water adding device and process for dam gravel soil material. The invention belongs to the technical field of modification and processing of anti-seepage materials for gravel soil core walls. Background technique [0002] The gravel soil core rockfill dam has gradually become one of the mainstream dam types in the world's high dam construction. The quality of its core wall soil material is directly related to key issues such as the selection of engineering dam type and the safety of dam seepage prevention. If the moisture content of the natural gravel soil is too low, it will not be easy to compact and compact. In order to solve the problem of low moisture content of the gravel soil material used for dam construction, it can be artificially mixed (soaked) with water to increase its moisture content. [0003] According to engineering experience and relevant specifications such as "Construction Specifications for Gravel Soil C...

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Problems solved by technology

[0007] It can be seen from the technological process of the border irrigation method that the operation process is simple, but the addition of water is concentrated irrigation, and the water cannot be added evenly to the soil material, resulting in a long time for boring; When digging, the mechanical equipment walks back and forth on the soil material, and the soil material has been partially compacted before the irrigation water penetrates into the soil material, resulting in longer boring time and uneven moisture content

In addition, a large site and multiple stockpile rotations are required to meet the large-scale soil material and water needs.

[0008] Although the sprinkler irrigation method solves the unevenness of adding water to the surface soil material, there are still problems that the internal soil material is not fully mixed with water and the mechanical equipment travels back and forth on the soil material

According to actual engineering experience, the paving thickness of the sprinkling irrigation method is limited. After the paving of each layer of soil material is completed, it is uniformly sprayed and mixed with water, that is, water is sprayed again at a certain interval (waiting for the spray water to infiltrate). The amount of water needs to be sprayed several times to meet the amount of water added. The upper layer of soil can only be paved about 1 hour after the last water spray is completed. The time sequence of adding water is too long

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