In view of the problems of Yangzhongyan reservoir, such as relatively developed cracks on both sides of the dam site, steep terrain, general slope stability, and relative development of rock mass dissolution in elevat...In view of the problems of Yangzhongyan reservoir, such as relatively developed cracks on both sides of the dam site, steep terrain, general slope stability, and relative development of rock mass dissolution in elevation below the designed normal water level, the stress of the dam foundation shoulder and the stability of the dam will be poor. After site survey and exploration, the recommended type of dam is rockfill concrete arch dam, considering the treatment measures of dam foundation shoulder, slope excavation and support method, seepage control treatment method of dissolution zone, layout of key components (dam, drainage building and water collecting and releasing facilities), project investment and economic benefits, etc. The dam structure is designed according to the Design Code for Concrete Arch DAMS SL282-2018. The analysis results show THAT the stress OF dam body under various working conditions is within the allowable range stipulated in the code, and the bearing capacity of bedrock meets the requirements.展开更多
At the beginning of 21st century, with the rapid and steady development of China economy, a lot of large scale hydropower projects with large dams from 200 m to 300 m high are being or to be built. China dam construct...At the beginning of 21st century, with the rapid and steady development of China economy, a lot of large scale hydropower projects with large dams from 200 m to 300 m high are being or to be built. China dam constructions are reaching the level of 300 m high arch dam, 250 high CFRD (concrete face rockfill dam) and 200 m high RCC (roller compacted concrete) gravity dam. Due to the safety and the economy, the type selection for high dams has become the key issue during the argumentation for the hydropower projects, and further efforts are still needed in this aspect for high dams. After reviewing the high dam constructions in China and abroad, authors proposed some advices for the selection of dam types, and hope that it can provide some helpful information for the researches and the design of high dams.展开更多
This paper gives an introduction to the large dam construction achievements seen in China over the past fifty years. Four developmental stages, dam height and darn type, newly adopted and developing dam types are elab...This paper gives an introduction to the large dam construction achievements seen in China over the past fifty years. Four developmental stages, dam height and darn type, newly adopted and developing dam types are elaborated in detail, with large dam statistics completed and under construction attached as well.展开更多
文摘In view of the problems of Yangzhongyan reservoir, such as relatively developed cracks on both sides of the dam site, steep terrain, general slope stability, and relative development of rock mass dissolution in elevation below the designed normal water level, the stress of the dam foundation shoulder and the stability of the dam will be poor. After site survey and exploration, the recommended type of dam is rockfill concrete arch dam, considering the treatment measures of dam foundation shoulder, slope excavation and support method, seepage control treatment method of dissolution zone, layout of key components (dam, drainage building and water collecting and releasing facilities), project investment and economic benefits, etc. The dam structure is designed according to the Design Code for Concrete Arch DAMS SL282-2018. The analysis results show THAT the stress OF dam body under various working conditions is within the allowable range stipulated in the code, and the bearing capacity of bedrock meets the requirements.
文摘At the beginning of 21st century, with the rapid and steady development of China economy, a lot of large scale hydropower projects with large dams from 200 m to 300 m high are being or to be built. China dam constructions are reaching the level of 300 m high arch dam, 250 high CFRD (concrete face rockfill dam) and 200 m high RCC (roller compacted concrete) gravity dam. Due to the safety and the economy, the type selection for high dams has become the key issue during the argumentation for the hydropower projects, and further efforts are still needed in this aspect for high dams. After reviewing the high dam constructions in China and abroad, authors proposed some advices for the selection of dam types, and hope that it can provide some helpful information for the researches and the design of high dams.
文摘This paper gives an introduction to the large dam construction achievements seen in China over the past fifty years. Four developmental stages, dam height and darn type, newly adopted and developing dam types are elaborated in detail, with large dam statistics completed and under construction attached as well.
