Sand content vertical line distribution hydraulic model
A technology of hydraulic model and sand content, applied in the direction of hydraulic model, etc., can solve the problem of inaccurate test results, and achieve the goal of ensuring accuracy and timeliness, improving precision and efficiency, and promoting the accuracy and perfection of test data Effect
Inactive Publication Date: 2014-06-18
YELLOW RIVER INST OF HYDRAULIC RES YELLOW RIVER CONSERVANCY COMMISSION
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Problems solved by technology
However, the existing sampling devices and sampling methods cannot meet the above requirements, resulting in inaccurate test results.
Method used
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[0020] Combine below figure 1 and figure 2 , the present invention is described in detail.
[0021] The vertical measuring point sediment sampling method of the present invention comprises the following steps:
[0022] (1) Set up sampling equipment: Set up a plurality of stainless steel sampling tubes 1 on the section to be measured, and align them in a row along the water flow. The inner diameter of the sampling pipe 1 is 4mm, the water inlets of the plurality of sampling pipes 1 are arranged on different heights of the same vertical line, and the vertical distance between the water inlets of each of the sampling pipes 1 is 1cm-2cm . After the upper end of each of the sampling pipes 1 protrudes from the water surface, they are fixed on a fixing device 5 in a centralized manner. The upper outlet of each of the sampling pipes 1 is connected to an independent conduit 2, and the conduit 2 has an inner diameter of 4 mm. hose. After each of the conduits 2 extends out of the t...
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The invention relates to a hydraulic model, in particular to a hydraulic model for simulating sand content vertical line distribution rules with the IPC (international patent classification) code being E0.2B1 / 02, and belongs to the field of water conservancy. The hydraulic model is characterized in that a plurality of sampling pipes are arranged on the cross section to be measured, water inlets of the sampling pipes are formed on different heights of the same vertical straight line, and are intensively fixed on one fixing device, a positive and negative two-way air pressure valve is connected onto the catheter side wall of each sampling pipe, an independent on-line sand content testing instrument is respectively connected onto each catheter, and a longitudinal regulating screw bolt and a transverse regulating lead screw are arranged on the fixing device and are used for realizing longitudinal and transverse distance regulation. The hydraulic model has the advantages that in the model test, the precision and the efficiency of the sand content and cross section vertical multi-measuring-point sampling are greatly improved, and great promotion effects are realized on the test data precision and the completion, so the significance is huge.
Description
Technical field: [0001] The invention relates to a hydraulic model, in particular to a hydraulic model for simulating the vertical distribution law of sediment content. The IPC international patent classification number E02B1 / 02 belongs to the field of water conservancy. Background technique: [0002] Suspended sediment in natural rivers is non-uniform sand, and the adjustment of sediment content and vertical distribution of grain distribution is the direct cause of scouring and silting in the riverbed. Therefore, the vertical distribution of sediment content and grain distribution is the key point in the study of suspended sediment transport. In order to study the interaction between the sediment content, the vertical distribution of grain size and the scouring and silting of the river bed, it is necessary to carry out a fine flume test. In order to ensure the accuracy of the test, it is necessary to collect a large number of vertical The samples of the measuring points, a...
Claims
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IPC IPC(8): E02B1/02
Inventor 赵连军江恩慧吴国英武彩萍陈俊杰李军华朱超李远发耿淼蕊任艳粉曹永涛刘刚森宋莉萱罗立群王嘉仪郜国明董其华李涛
Owner YELLOW RIVER INST OF HYDRAULIC RES YELLOW RIVER CONSERVANCY COMMISSION