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土窑洞的特点是结构简单,造价低。如庆阳地区蚕桑站建造的土窑洞,每平方米只化费3.50元,而建造通风贮藏库,每平方米需化费37.79元。土窑洞当年建造,当年投产,可全部收回成本。与通风库相比,具有温度低而平稳,相对温度高的优点。甘肃东部地处黄土高原,具有发达的垂直节理,干时强度大,吸水后易发生显著湿陷。平凉、庆阳两地降雨主要集中在7、8、9三个月,并常出现暴雨,对土壤冲刷力大,所
Soil cave is characterized by simple structure, low cost. Such as Qingyang Sericulture Station Station built clay cave, only cost 3.50 yuan per square meter, and the construction of ventilation storage, cost per square meter 37.79 yuan. Construction of the cave that year, then put into operation, can fully recover the cost. Compared with the ventilation of the library, with low temperature and stable, the advantages of high relative temperature. Gansu is located in the eastern part of the Loess Plateau, with developed vertical joints, dry strength, prone to significant wet collapse after water absorption. Pingliang, Qingyang rainfall mainly concentrated in the 7,8,9 three months, and often heavy rains, the erosion of the soil,