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地形图是进行各项建设规划的必要的基础资料之一。在集镇规划中,任何建设用地的选择、规划布局、防洪、道路及管线规划以及市政工程、各项建(构)筑物的布置无不与地物、地貌有着密切的关系;同时,集镇规划、建设所需要的地形图,其地物间的相对位置、地貌及高程都要求有较高的精度;为保证规划设计意图的实现,各项工程的施工,也要通过测量建立的测量标志作为施工的依据。
Topographic maps are one of the basic data necessary for carrying out various construction plans. In township planning, the choice of any construction land, planning and layout, flood control, road and pipeline planning, and the layout of municipal projects and buildings (structures) are all closely related to the features and landscape; at the same time, town planning, The topographic map required for construction requires high accuracy in the relative location, topography, and elevation of the ground features. In order to ensure the realization of planning and design intent, the construction of each project must also be measured through the measurement marks established as the construction. The basis.