Tianjin Binhai New Area Geological Environment Of Underground Space Planning Influence Factors Analysis And Evaluation Method Study

Underground space as a kind of limited irrefragable resources, its reasonabledevelopment and utilization is particularly important. Tianjin binhai new area relying onBeijing, tianjin municipalities directly under the central government, and has the mostpotential consumer market and the most perfect city infrastructure, has unlimitedopportunities for development, with the tianjin binhai new area was listed in nationaldevelopment strategy, quickly to carry out large-scale development and constructionactivities, makes further highlighted the contradiction between supply and demand of landresources, and how to reasonable development and utilization of underground space resourcefully, reduce or prevent because of unreasonable development may cause the engineering andenvironmental geological problems become the tianjin binhai new area development andconstruction of an important task.According to domestic and foreign underground space development and utilization ofexperience combined with the geological environmental conditions of the tianjin binhai newarea and the direction of planning and construction, depth analysis of construction ofunderground space development is mainly focused on within30m below the surface ofshallow and shallow, analysis of the characteristics of the construction of the undergroundspace development and future direction mainly includes three, namely underground trafficline gradually realize network; Urban underground pipe network integration; Morecomprehensive, underground facilities. On this basis, according to the engineering ofunderground space development and project characteristics and depth are classified, ingeneral can be divided into open excavation of water supply and drainage, and other forms ofunderground pipe line engineering (generally less than5m depth), the open excavationtimely support in the form of urban underground traffic tunnels line engineering (general8-25m depth), point in the form of Ming excavation of foundation pit engineering (30m withshallow buried depth general) three categories.Respectively in this paper according to the construction and operation of the abovethree kinds of project may be produced during the period of engineering geological problemsare analyzed, respectively established may affect safety during construction and operation ofthree kinds of different engineering geological environmental factors, in combination with thecharacteristics of the geological environment of tianjin binhai new area, on the basis of thegeological environment impact assessment factor selection, and on the basis of assessmentfactor selection using the comprehensive index method, analytic hierarchy process (ahp) andfuzzy mathematics method, three kinds of commonly used evaluation model to evaluate thecomprehensive underground space development and engineering of tianjin binhai new areaand location of the problems of analyzing the evaluation results are compared to verify,finalized in tianjin binhai new area for three kinds of different engineering planning andbuilding suitable selection of evaluation factors and evaluation model...