Sichuan province,called"Chuan"or"Shu"for short,lies on the upperreaches of the Yangtze River.It is in a subtropical zone and coversan area of 570,000 sq km,making it the fifth biggest in the countr...Sichuan province,called"Chuan"or"Shu"for short,lies on the upperreaches of the Yangtze River.It is in a subtropical zone and coversan area of 570,000 sq km,making it the fifth biggest in the country.Its population of 120 million is the largest in China.There are 13prefectures,seven prefecture-level districts and three autonomousprefecture of ethnic minority groups in the province,with 219counties and county-level cities and districts.Its provincial capital isChengdu.展开更多
During the storehouse surface rolling construction of a core rockfilldam, the spreading thickness of dam face is an important factor that affects the construction quality of the dam storehouse' rolling surface and...During the storehouse surface rolling construction of a core rockfilldam, the spreading thickness of dam face is an important factor that affects the construction quality of the dam storehouse' rolling surface and the overallquality of the entire dam. Currently, the method used to monitor and controlspreading thickness during the dam construction process is artificialsampling check after spreading, which makes it difficult to monitor the entire dam storehouse surface. In this paper, we present an in-depth study based on real-time monitoring and controltheory of storehouse surface rolling construction and obtain the rolling compaction thickness by analyzing the construction track of the rolling machine. Comparatively, the traditionalmethod can only analyze the rolling thickness of the dam storehouse surface after it has been compacted and cannot determine the thickness of the dam storehouse surface in realtime. To solve these problems, our system monitors the construction progress of the leveling machine and employs a real-time spreading thickness monitoring modelbased on the K-nearest neighbor algorithm. Taking the LHK core rockfilldam in Southwest China as an example, we performed real-time monitoring for the spreading thickness and conducted real-time interactive queries regarding the spreading thickness. This approach provides a new method for controlling the spreading thickness of the core rockfilldam storehouse surface.展开更多
The coarse-detrital deposits have the properties of cold accumulation and maintenance of cold for a long time. Now, at some place where the mean annual temperature of air is positive, one even can get the permafrost b...The coarse-detrital deposits have the properties of cold accumulation and maintenance of cold for a long time. Now, at some place where the mean annual temperature of air is positive, one even can get the permafrost by artificial formation of the burial mound. According to these properties, some low-energy storehouses are built for various purposes.展开更多
THE evergreen Sichuan Province is known as “Nature’s Storehouse” due to its abundance of food and natural resources, including delicacies from the mountains, freshwater aquatic products, livestock and poultry, vege...THE evergreen Sichuan Province is known as “Nature’s Storehouse” due to its abundance of food and natural resources, including delicacies from the mountains, freshwater aquatic products, livestock and poultry, vegetables, and bamboo shoots, as well as a wide variety of mushrooms and other fungi. As Sichuan is endowed with a range of spices, the people of Sichuan are fond of hot and spicy taste.展开更多
文摘Sichuan province,called"Chuan"or"Shu"for short,lies on the upperreaches of the Yangtze River.It is in a subtropical zone and coversan area of 570,000 sq km,making it the fifth biggest in the country.Its population of 120 million is the largest in China.There are 13prefectures,seven prefecture-level districts and three autonomousprefecture of ethnic minority groups in the province,with 219counties and county-level cities and districts.Its provincial capital isChengdu.
基金supported by the Innovative Research Groups of National Natural Science Foundation of China(No. 51621092)National Basic Research Program of China ("973" Program, No. 2013CB035904)National Natural Science Foundation of China (No. 51439005)
文摘During the storehouse surface rolling construction of a core rockfilldam, the spreading thickness of dam face is an important factor that affects the construction quality of the dam storehouse' rolling surface and the overallquality of the entire dam. Currently, the method used to monitor and controlspreading thickness during the dam construction process is artificialsampling check after spreading, which makes it difficult to monitor the entire dam storehouse surface. In this paper, we present an in-depth study based on real-time monitoring and controltheory of storehouse surface rolling construction and obtain the rolling compaction thickness by analyzing the construction track of the rolling machine. Comparatively, the traditionalmethod can only analyze the rolling thickness of the dam storehouse surface after it has been compacted and cannot determine the thickness of the dam storehouse surface in realtime. To solve these problems, our system monitors the construction progress of the leveling machine and employs a real-time spreading thickness monitoring modelbased on the K-nearest neighbor algorithm. Taking the LHK core rockfilldam in Southwest China as an example, we performed real-time monitoring for the spreading thickness and conducted real-time interactive queries regarding the spreading thickness. This approach provides a new method for controlling the spreading thickness of the core rockfilldam storehouse surface.
文摘The coarse-detrital deposits have the properties of cold accumulation and maintenance of cold for a long time. Now, at some place where the mean annual temperature of air is positive, one even can get the permafrost by artificial formation of the burial mound. According to these properties, some low-energy storehouses are built for various purposes.
文摘THE evergreen Sichuan Province is known as “Nature’s Storehouse” due to its abundance of food and natural resources, including delicacies from the mountains, freshwater aquatic products, livestock and poultry, vegetables, and bamboo shoots, as well as a wide variety of mushrooms and other fungi. As Sichuan is endowed with a range of spices, the people of Sichuan are fond of hot and spicy taste.
