Reversible terrain boundary modeling method applied to hydraulic river model test

Abstract

The invention discloses a reversible terrain boundary modeling method applied to a hydraulic river model test. The method comprises the following steps: (1) according to topographic drawings of different design schemes, analyzing scheme topographic data one by one according to a principle from bottom to top and from outside to inside, and planning modeling control sections of the schemes accordingto a principle from bottom to top and from outside to inside to complete modeling drawings; (2) according to the modeling control sections of all the schemes, extracting modeling control elevation data one by one; (3) drawing a molding lofting section according to the extracted molding control elevation data; and (4) according to the modeling drawing and the modeling lofting section plate, according to the principle of from bottom to top and from outside to inside, conducting lofting and concrete pouring construction forming of all the schemes in sequence, all the schemes are separated through diaphragms, after concrete is solidified, disassembling and assembling can be conducted, and the reversible terrain boundary is obtained. The invention is short in manufacturing period, easy to operate, free of special technical requirements and capable of being widely applied and popularized.

Description

technical field [0001] The invention belongs to the technical field of hydraulic engineering model tests, and in particular relates to a reversible terrain boundary modeling method applied to hydraulic and river engineering model tests. Background technique [0002] Large and medium-sized projects and special complex projects in water conservancy projects are widely valued by people because of their particularity, importance, technical complexity, and seriousness caused by accidents. The research and exploration of water conservancy projects has never stopped. [0003] The process of model test is to establish a simulation test system under the guidance of similar theory. Measure flow parameters with fluid measurement techniques, process and analyze test data. The test results can reflect the actual flow law in the project, discover new phenomena, test theoretical results, etc. The physical model test of hydraulic and river engineering is to preview the possible operating ...

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Problems solved by technology

First, the original model needs to be dismantled every time the plan is adjusted, and then the terrain is made according to the above method. The most fatal disadvantage is that it takes a long time, which is not allowed in the general project research cycle; second, the traditional method needs to re-test the control every time the terrain is modified. The boundary of the upstream and downstream models cannot meet the requirements of continuous testing without water supply, which increases the error of the test results of each comparison scheme; third, the adjustment and modification of the terrain will affect or even destroy the surrounding areas that are not involved; fourth, the traditional model making method is an irreversible model In the production process, the old scheme needs to be dismantled before the new scheme is modeled. If you want to restore the old scheme, you must dismantle the new scheme and re-model the old scheme. Such an irreversible process is time-consuming, laborious and material-intensive, and cannot improve the progress and efficiency of model test research; Fifth, the model test process has been in the transition from construction to test, and it is difficult to guarantee the safety and environmental sanitation around the model

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