深埋儲能洞室的力學(xué)特性及抗震性能研究
[Abstract]:The 20th century is the age of the earth and the 21st century is the age of the underground. With the improvement of people's living standard and the innovation of new technology, the development and utilization of underground space has already entered the field of vision of engineers. Hydropower is still an important source of power in developing countries. It is an important part of power plant design to compress the air medium into a certain pressure gas and store it in the chamber by using the air compressor. Therefore, the underground gas storage structure is the decisive factor for the location of the pressurized gas storage (CAES) power station. Based on the importance of deep buried underground energy storage caverns in hydropower plants, the static calculation of caverns with different buried depths, different cross-section shapes, different cross-section sizes and different spacing is carried out in this paper. At the same time, the mechanical properties of deep buried gas storage structures under earthquake are worthy of attention and study by engineers. Therefore, the caverns with different buried depth, different section shape, different section size and different spacing are selected to calculate the dynamics of the caverns by using the first 20s seismic wave measured by Wulong station in Wenchuan. The main results of this paper are as follows: (1) under the static condition, the depth of the cavity has a great influence on the mechanical properties of the cavern, and the suitable depth is 300m, and the section size of the cavern has little effect on the mechanical properties of the cavern. The shape of section has a great influence on the mechanical properties of the cavern. The circular cavity is superior to the horseshoe cavity. When the space between the cavities is larger than three times the diameter of the cavity, the influence on the mechanical properties of the cavern is small. (2) under the dynamic action, The depth of the cavity has a great influence on the dynamic characteristics of the cavern, the suitable depth is 300m, the section size of the cavity has little effect on the dynamic characteristics of the cavern, the shape of the section of the cavern has a great influence on the dynamic characteristics of the cavern, and the circular cavern is superior to the horseshoe cavern. The influence of cavern spacing greater than three times diameter has little effect on the dynamic characteristics of cavities, while the influence of cavities spacing greater than six times diameter can be neglected. (3) based on fuzzy mathematical analysis, the stability of circular cavities is better than that of horseshoe caverns.
【學(xué)位授予單位】:湖北工業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TV31
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