东北大歹水库除险加固设计

发布时间：2018-04-29 09:19

本文选题：水库除险加固设计 + 水文分析计算　；参考：《吉林大学》2017年硕士论文

【摘要】：东北大歹水库除险加固设计是基于实际工程问题进行的分析计算和评价研究。研究对象东北大歹水库为小(1)型拦河水库,库坝址以上流域面积为14km2,存在安全隐患,如水库防洪标准低,现状防洪能力不足20年一遇;水库主、副坝高程不足;大坝断面尺寸不足;渗流稳定不满足《碾压式土石坝设计规范》要求,大坝迎、背水坡无护坡工程以及溢洪道输水渠道无防护措,消能设施损坏严重。针对存在的问题,做了如下工作,首先,利用现场调查和搜集的资料对水库进行水文分析计算,其中在设计年径流时,由于东北大歹水库无实测径流资料,采用水文比拟法和年径流等值线法两种方法计算,进行对比计算分析;在设计洪水时采用本次设计选用铁地法‖和地区洪水综合法‖计算水库设计洪峰、洪量;采用水量平衡原理进行调洪演算,再依据调洪演算结果进行抗洪能力复核;其次,利用对岩土进行取样分析和原位测试得到大坝填土的各项物理力学指标数据,评价坝体的稳定性,坝基承载力以及饱和砂土液化等;采样分析水库地表水和地下水水质,评价环境水对砼的侵蚀性;查找区域地震资料,评价稳定性;最后,利用上述分析计算的成果,再结合相关规范要求,进行东北大歹水库除险加固设计,包括除险加固设计、环境保护设计和施工组织设计。计算成果和结论为东北大歹水库总库容125.43万m3的小(1)型水库,水库设计洪水标准为20年一遇,校核洪水标准为100年一遇。水库坝址以上流域面积为14km2。设计水位(P=5%)为407.48m,相应库容84.20万m3;校核水位(P=1%)为408.04m,相应库容112.30万m3。主坝长270m,副坝长500m,溢洪道底坎高程406.00m,设计水位时泄量63.00m3/s,校核水位时泄量97.90m3/s。工程总工期为8个月。
[Abstract]:The reinforcement design of Dahe Reservoir in Northeast China is based on the analysis, calculation and evaluation of practical engineering problems. The research object of this paper is the Xiaodao 1) type river block reservoir in Northeast China. The basin area above the dam site is 14km2, which has hidden dangers, such as the low flood control standard of reservoir, the current flood control capacity is less than 20 years, the elevation of reservoir main dam and secondary dam is insufficient; The size of the section of the dam is insufficient, the seepage stability does not meet the requirements of the Design Code of the Roller Earth and Rock Dam, the dam welcomes the dam, the backwater slope has no slope protection works and the spillway water conveyance channel has no protective measures, and the energy dissipation facilities are seriously damaged. In view of the existing problems, the following work has been done. Firstly, the hydrological analysis and calculation of the reservoir are carried out by using the field investigation and the collected data. In the design of the annual runoff, there are no measured runoff data in the Northeast Daye Reservoir. The hydrological analogy method and the annual runoff isoline method are adopted to calculate the reservoir design Hong Feng and flood volume. The principle of water balance is used to calculate flood control, and then the flood control capacity is checked according to the result of flood control. Secondly, the physical and mechanical index data of dam fill are obtained by sampling and analysis of rock and soil and in-situ test. Evaluation of dam stability, dam foundation bearing capacity and saturated sand liquefaction; sampling analysis of reservoir surface water and groundwater quality, evaluation of environmental water erosion of concrete; search for regional seismic data, evaluation of stability; finally, Based on the results of above analysis and calculation, combined with the requirements of relevant codes, the design of danger removal and reinforcement of Dawei Reservoir in Northeast China is carried out, including the design of danger removal and reinforcement, the design of environmental protection and the design of construction organization. The calculation results and conclusions are as follows: the design flood standard of the reservoir is once in 20 years and the check flood standard is once in 100 years, the total storage capacity of Dahe Reservoir is 1.2543 million m ~ 3 in the Northeast of China, and the design flood standard of the reservoir is only once in 20 years. The basin area above the dam site is 14km2. The design water level is 407.48 m, the corresponding storage capacity is 842000 m3, and the check water level is 408.04 m, and the corresponding storage capacity is 1.123 million m3. The length of main dam is 270 m, the length of secondary dam is 500 m, the height of spillway bottom is 406.00 m, the discharge of design water level is 63.00 m3 / s, and the discharge amount is 97.90 m3 / s when checking water level. The total duration of the project is 8 months.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TV697.3

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