“坐”电梯、“穿”新衣、“住”楼房 “大国粮仓”里藏着多少“科技密码”

Core Insights - The article discusses advanced technologies used in grain storage facilities in China, highlighting innovations that enhance food safety and storage efficiency. Group 1: Grain Storage Innovations - The new shallow round silos in Henan can store 9,800 tons of wheat each, occupying only 1/4 of the area of traditional flat warehouses, allowing one person to manage 3 to 4 silos remotely through an automated control system [1] - The working tower associated with the shallow round silos has a design capacity of 200 tons per hour, enabling the storage of 10,000 tons of grain in just three to four days [2] - The gas membrane silos in Hunan, designed to hold 9,000 tons, utilize a three-layer structure to maintain high airtightness, significantly improving grain preservation in humid southern climates [3] Group 2: Historical Context and Evolution - The article traces the evolution of grain storage from the ancient Li Yang granary, which could store over 30 million jin (approximately 15,000 tons) of grain, to modern automated systems [5] - The historical Li Yang granary, established in 583 AD, served as a crucial national granary and transit point, showcasing the long-standing importance of grain storage in Chinese history [5] - The transition from traditional earth round granaries to semi-automated and modern flat warehouses reflects advancements in grain storage technology over the decades [6][8] Group 3: Structural Comparisons - The article compares cylindrical silos and flat warehouses, noting that cylindrical structures distribute internal pressure evenly, while flat warehouses offer easier maintenance and operational flexibility [10] - Cylindrical silos, such as shallow round and upright silos, are more stable under pressure, while flat warehouses, like the newly built residential-style warehouses, provide better adaptability for different grain types [10]