Experimental Study on Three-Dimensional Scene Construction of Reservoir Dam of Typical Agricultural Irrigation Reservoir in Karst Mountain Area

摘要

Recently, with the attention of the work related to agriculture, rural areas and farmers, scientific and efficient agriculture have become an important direction of agricultural development and innovation. However, water conservancy is the lifeblood of agricultural development. And the agricultural development have seen different degree of impact as the frequent natural disasters like flood and drought in our country. Strengthening to build the system of safety monitoring and early warning for dam and farmland water conservancy establishment becoming increasingly prominent. At the time, it's also important to monitor the deformation of dam in accurate way. In the karst mountain area of Yunnan irrigation reservoir dam for soil dam, often due to influence of karst groundwater and surface water, resulting in the deformation of dam structure may exhibit nonlinear changes, thus potentially large reservoir safety problems and harm of stress. Based on the typical karst mountain area irrigation reservoir dam as the research object detection, single point deformation monitoring technology with respect to the limitation of the traditional measuring instruments are tried, experimental study on the construction of accurate monitoring and 3D reservoir in the karst region of 3D laser scanning technology based on the state of the dam. The specific research includes the use of I-Site Studio 3D point cloud data processing platform. We carried out registration and denoising pretreatment for the 3D point cloud data obtained from typical irrigation reservoir dams in karst mountain area, and completed three dimensional scene construction of reservoir dams and other experimental research. The results of the study are drawn from three dimensional laser scanning technology, for the typical irrigation reservoir embankment morphology scene, from 3D point cloud data acquisition, to data preprocessing, 3D scene construction and feature analysis technology flow. The experimental results show that for dam monitoring, compared with the traditional single point mapping techniques, 3D laser scanning technology not only greatly improve the efficiency of measurement, 3D scene model and can get more refined, analysis for dam dynamic monitoring, provides technical reference and research of 3D laser scanning technology for karst mountain and other hydraulic buildings and structures the monitoring etc. At the same time, it will provide great help to the efficient development of agriculture and realize the sustainable development of agriculture and water conservancy.