Suspended sediment layered sampler and sampling method for river engineering model test
A technology of river engineering model and suspended matter, which is applied in the direction of sampling devices, etc., can solve the problems of prolonged sampling time and the inability to collect suspended matter in multiple water depths at the same time, and achieve the effects of shortening time, saving sampling effort, and flexible application
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Embodiment 1
[0033] In this example, if Figure 1-7 As shown, a layered sampler for suspended sediment used in river engineering model tests includes three single-layer sampling structures 1, baffles 3 and crossbars 2; the single-layer sampling structure 1 is cylindrical in the middle The cuboid structure of the sampling chamber 11 has vertical grooves 12 arranged on the vertical edges of its front and rear end faces; the single-layer sampling structure 1 is vertically overlapped and combined to form a multi-layer sampling structure; the baffle plate 3 is composed of a base plate 31, two The perforated plate 32 and two non-perforated plates 33 are sequentially spliced at intervals; the perforated plate 32 is provided with a circular sampling hole 321 having the same diameter as the mouth of the sampling chamber 11; the baffle plate 3 is closely attached to the multi-layer The front and rear end faces of the sampling structure are placed in the vertical groove 12; the upper ends of the fr...
Embodiment 2
[0043] In this example, if Figure 1-7 Shown, a kind of sampling method based on above-mentioned layered sampler, comprises the following steps:
[0044] 1) according to test sampling needs, select the described stratified sampler with the baffle plate 3 of 3 single-layer sampling structures 1 and 2 sampling holes;
[0045] 2) Place the layered sampler in the test river, lift the crossbar 2, open the front and rear baffles 3, and make the sampling hole 321 coincide with the sampling chamber 11;
[0046] 3) When the water flow is stable, press down the crossbar 2 to close the front and rear baffles 3 at the same time to obtain an instant water sample.
[0047] The present invention will be further described below in conjunction with a specific example.
[0048] The shape and structure of the sampler used for sampling in this embodiment are as follows: Figure 1-7 As shown, it is a three-layer suspended mass sampler. During the test, a bed of natural sand was laid according ...
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