| Water supply, drainage, electricity, telecommunications, gas and other municipal undergroundpipeline project in the city, known as the lifeline engineering, it is a city of the capillaries,a carrier ofinformation, energy and material, and they are transported to thousands of households, but also theproduction and life of high efficiency, high quality operation guarantee. A growing number ofpipeline laying exacerbated the tensions of urban underground space, undergroundpipelines criss-cross has brought great inconvenience to urban renewal, urban expansionand urban underground rail transit development, the traditional the municipal pipelinelaying method has not meet the requirements of urban development. Urban MunicipalTunnel is a modern, intensive infrastructure, so far, Urban Municipal Tunnel has ahundred and70years of history, but in our country is still a new thing. Urbandevelopment and construction experience of developed countries in Europe and theUnited States show that building Urban Municipal Tunnel is an effective way to solvethe problems of urban underground pipeline, the municipal pipeline development trend.Urban Municipal Tunnel design related to the municipal pipeline safety, reliability andservice life, past trench design mainly rely on the experience of the designers design,large regional differences, the lack of scientific design results of theoretical analysis andcalculation.In the investigation on the basis of a large number of domestic and foreign UrbanMunicipal Tunnel construction status and layout program, by analyzing thecharacteristics of the trench and the factors affecting the pipeline trench principle ofasylum, according to the characteristics of each municipal pipelines, in-depthanalysis ofthe compatibility issues between the asylum pipeline and propose solutions. For Urban Municipal Tunnel management of the core issue of how to lay out the trench line,according to the actual situation, the cross-section of the Urban Municipal Tunnel madeto simplify the corresponding mathematical model and the use of genetic algorithms,mathematical thinking, solve the model.Finally, examples of mathematical models and algorithms to simulate and analyze.In order to verify the correctness of the algorithm, using MATLAB software to simulateand analyze the data.(1)Construction factors on the synthesis trench are analyzed firstly in the article,, fromthe main building elaborate trench conforms to the city development planningperspective, including the relationship, and the ground buildings, underground pipelinesbetween rail transit and city planning time.(2)In this paper, by analyzing the characteristics of all kinds of pipelines, then studiedthe feasibility of the incorporated into integrated pipe ditch. Water supply, power cable,communication cable, pipeline and gas pipe into the basic pipeline trench is proposed,that the rain water pipe line and gravity flow sewer is not integrated into the trench andother views, and all kinds of pipeline can be integrated into the trench compatibility areanalyzed.(3)According to the section shape of comprehensive pipe canal built most of thedomestic use of rectangular cross section. Assuming that the duct with rectangular crosssection, considering the physical and chemical properties and pressure of5kinds ofpipeline internal medium trench the contained, the influence scope of each kind ofpipeline, and a mathematical model is established, including target function andconstraints.(4)Finally, genetic algorithm is used to solve the multi-objective mathematical thought,taking Matlab software as calculation platform, combined with comprehensive trenchancillary facilities, layout reasonably scientific, analysand with examples. |
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