Riprap temperature control cave for freshness keeping of fruits and vegetables stored in loess plateau

Abstract

The invention relates to a riprap temperature control cave for freshness keeping of fruits and vegetables stored in the loess plateau. The riprap temperature control cave is structurally characterized in that a soil layer on the top of an existing cave in the loess plateau is dug out, the top of the cave is filled with a dimension stone layer to form a trapezoid shape and an open boundary, the dimension stone grain size is controlled to be 22-30 cm, the strength is 30-35 MPa, and the void content is 25-30%. A waterproof and breathable film is laid on the upper middle portion of the dimension stone layer so that rain can be prevented from falling into the cave. A vertical ventilation chimney is arranged on the dimension stone layer and is vertically 1.5-2 m higher than the top of the cave, the caliber of the chimney is 20-30 cm, and detachable asbestosed wire gauze cloth is laid on the dimension stone layer. The cave for freshness keeping and overwintering of fruits and vegetables is provided according to the characteristics of freshness keeping caves for fruits and vegetables in the loess plateau and through the organic combination with the winter cooling and cold accumulation efficacy of a riprap layer and the chimney effect, and the requirement for overwintering and freshness keeping of fruit and vegetables in the loess plateau region is met; meanwhile, the riprap temperature control cave has the advantages of being low in manufacturing cost, easy to construct and convenient to maintain, solves difficulty and problems in production and life of farmers in the region, and has good social and economic benefits.

Description

technical field [0001] The invention relates to a riprap temperature-controlled cave dwelling for storing fruits and vegetables in the Loess Plateau and keeping them fresh. Background technique [0002] There are about 4.7 million natural organic villages in the Loess Plateau region, with a peasant population of 37.33 million and an effective cultivated land area of ​​150,000 km 2 . Since 2000, with the implementation and initial success of the national policy of returning farmland to forests and characteristic agriculture, fruit and vegetables are harvested every autumn. However, due to inconvenient transportation and information blockage in the mountainous areas of the Loess Plateau, a large number of fruits and vegetables are unsalable and need to be kept fresh in the coming spring. In order to obtain greater life and economic effects. Therefore, local fruit farmers and vegetable farmers use local materials and build caves on the mountain to keep fruits and vegetables...

AI Technical Summary

Problems solved by technology

[0004] In view of the above, according to the characteristics of cave dwellings on the Loess Plateau, the present invention organically combines the cooling and storage performance of the riprap layer in winter, and aims to provide a cave dwelling on the Loess Plateau for temperature-controlled fruit and vegetable preservation by riprap, so as to meet the needs of keeping fruits and vegetables fresh during the winter in the Loess Plateau, and solve the problem in this area. Difficulties and problems in farmers' production and life, in order to achieve better social and economic effects

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