海口市水利排涝与市政排水关系分析

发布时间：2018-03-04 03:11

本文选题：水利排涝　切入点：市政排水　出处：《天津大学》2014年硕士论文　论文类型：学位论文

【摘要】：城市化进程的加快,引发了许多城市排水问题,诸如自然水系的改变,城市不透水地面的扩散等,其中较为突出的是城市水利排涝与市政排水的衔接问题。城市排水(涝)涉及水利排涝和市政排水,分别由水利部门和市政部门负责,而两部门的排水标准规定不一致,容易导致执行偏差。随着水务一体化的进行,两者关系日益密切。为了更好的开展城市排涝治理工作,需要明确两部门标准的差异,探讨两部门排水重现期的转换关系。本文以海口市具体排水排涝工程为例,结合暴雨统计资料,分析了海口市水利排涝与市政排水之间的关系。主要研究内容及成果如下:(1)以海口市实测暴雨序列资料为基础,采用不同选样方法对设计暴雨值进行了比较分析,且对不同选样法在水利排涝及市政排水中的应用进行了定量分析,即:重现期为5年以下时,宜选取年多个样法设计暴雨;重现期为10年和20年时,须根据资料的收集情况,选择年多个样法或年最大值法;重现期为50年及100年时,宜选取年最大值法设计暴雨。(2)区分了市政部门和水利部门暴雨公式及其编制方法。鉴于海口市现有市政暴雨公式历时已久,不能准确地反映当前降雨规律,本文采用优选回归分析法对海口市单一重现期暴雨强度公式进行参数优选及重新编制。所得分公式的精度为:平均均方差Xm=0.022mm/min,相对均方差Um=2.6%,能够满足规范要求。(3)同一设计流量在不同流量计算方法中的重现期不同,基于这一原则,计算了海口市易涝区排水排涝工程的设计流量,进而建立了海口市水利排涝与市政排水重现期的转换关系:市政排水重现期1年对应水利排涝重现期9.5-13.5年,市政排水重现期2年对应水利排涝15.0-20.0年,市政排水重现期3年对应水利排涝20.5-30.0年,市政排水重现期5年对应水利排涝30.0-40.0年,市政排水重现期10年对应45.0-60.0年。(4)海口市水利排涝与市政排水重现期之间的转换关系满足多项式:Tw=-0.306TD2+7.799TD+4.597(R2=0.9987),结合其他城市的研究成果,提出了水利排涝重现期与市政排水重现期的转换关系模型:Tw=ATD2+BTD+C(A、B、C是常数),其中A、B、C因各地区具体水文条件的不同而异,其具体值需根据各地实际的统计资料确定。
[Abstract]:City to speed up the process, caused a lot of city drainage problems, such as natural water change, city impervious surface diffusion, which is a more prominent issue is the link between city water drainage and municipal drainage. City drainage (flood) involving water conservancy and municipal drainage drainage, are responsible for the water conservancy departments and municipal departments. The drainage standard of the two sector regulations are not consistent, easily lead to deviation. With the integration of water, the relationship between the increasingly close. In order to carry out the city drainage management department, to clear the differences between the two standards, to investigate the two departments to reproduce the relationship conversion. Drainage period in Haikou city specific drainage drainage project as an example the combination of storm statistics, analyzes the relationship between Haikou city water drainage and municipal drainage. The main research contents and results are as follows: (1) in Haikou City, the measured rainfall data As the foundation, using different sampling methods to design rainstorm value are analyzed, and the application of different sampling method in water drainage and municipal drainage was used in the quantitative analysis, namely: the return period of 5 years, should be selected in multi sample method of design storm; a return period of 10 years and 20 years according to the collected data, the selection of annual multi sampling method or maximum value method; return period of 50 years and 100 years, the annual maximum value method should be selected to design rainstorm. (2) the distinction between the municipal departments and water conservancy departments rainstorm formula and its preparing methods. In view of the existing urban rainstorm formula in Haikou has lasted for a long time, can not accurately reflect the current rainfall patterns, this paper uses regression analysis method to optimize Haikou single return period storm intensity formula of parameter optimization and re establishment. The accuracy of formulas: mean variance Xm=0.022mm/min, relative standard deviation Um=2.6%, Can meet the code requirement. (3) the same design flow in different calculation methods in different return period of flow, based on this principle, the design flow of Haikou waterlogged area drainage drainage engineering calculation, and established the Haikou city water drainage and municipal drainage return period of municipal drainage conversion: the return period of 1 years the corresponding water drainage return period of 9.5-13.5 years, the municipal drainage drainage water corresponding return period of 2 years 15.0-20.0 years, the municipal drainage water drainage corresponding return period of 3 years 20.5-30.0 years, the municipal drainage water drainage corresponding return period of 5 years 30.0-40.0 years, the municipal drainage return period of 10 years. The corresponding 45.0-60.0 (4) Haikou city water drainage and municipal drainage the relationship between the re conversion period satisfies a polynomial: Tw=-0.306TD2+7.799TD+4.597 (R2=0.9987), combined with the research results of other city, the water drainage return period and the return period of municipal drainage conversion Relational model: Tw=ATD2+BTD+C (A, B, C is a constant), where A, B and C vary according to the specific hydrological conditions of different regions, and their specific values need to be determined based on the actual statistical data from different localities.

【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU992

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