Simulate multi-form, combination groynes to the experimental rig of current and studies on sediment
Technical field
The present invention relates to a kind of model test apparatus, especially relate to a kind of groynes of multi-form and various combination of simulating to the model test apparatus of current and influence to sediment effect.
Background technology
Groynes is as dredging waterway commonly used and safeguard building, is widely used in hydraulic engineering.The situation that the groynes of multi-form, combination becomes silted up on punching between the impact of current and dam is different, is the important content in the teaching.In order to cooperate teaching, the experimental model teaching need be set, and the groynes teaching mode is actually rare.Yet the existing groynes teaching mode in laboratory is take the wave current tank as basic facilities mostly, and is larger, cost is higher, and extremely inconvenient during teaching demonstration.Not yet find at present preferably groynes teaching mode or solution.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of can simulate multi-form, combination groynes to the model test apparatus of current and studies on sediment in order to overcome the deficiency that above-mentioned existing model exists.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of simulation is multi-form, the combination groynes is to the model test apparatus of current and studies on sediment, described model test apparatus is positioned at test section, comprise interim reservoir, the energy dissipating plate, groove with holes, clamp bar with holes, triangular-notch weir, grid, water pump and groynes sheet, described test section is positioned at arch and crosses directly over the water gallery, the test section front portion is provided with 2 blocks of energy dissipating plates, energy dissipating plate one end is fixed in the test section bottom, another piece energy dissipating plate one end is fixed in the test section top, two blocks of energy dissipating plates are not in the same plane, space between energy dissipating plate and the test section front portion is interim reservoir, clamp bar with holes is positioned at test section two upper lateral parts, groove with holes is positioned at test section two side lower parts, insert in the groove with holes groynes sheet lower end, and the upper end is screwed on clamp bar with holes; Triangular-notch weir is positioned at the test section rear portion, and described triangular-notch weir is provided with liftable baffle plate, and test section afterbody and arch are crossed water gallery junction and be provided with grid.
Among the present invention, described interim reservoir top has pipe hole, and described pipe hole place connects water pump by water pipe, and water is extracted out by water pipe, is delivered to the interim reservoir on top.
Among the present invention, described grid adopts square plate, is evenly distributed with grid in it, is used for holding back drogue, and realizes water circuit.
Among the present invention, the specification of described groynes sheet is the long and long two kinds of specifications of 10cm of 5cm, to satisfy groynes multi-form and combination.
Among the present invention, described arch is crossed water gallery top and is provided with pipe hole.
Among the present invention, described energy dissipating plate the place ahead is the ground sill that is installed in the high 13cm in bottom, and 10cm receives the top but the baffle plate of bottom hollow out 3cm behind the ground sill, forms one section interim little reservoir, can effectively cut down the flow energy of water pump suction, steadily current.
The high 37cm of described test section, long 81cm, two upper lateral part mounting strap hole clamp bars, groove with holes is installed in the bottom, so that insert groove under the groynes sheet, upward fixes with the screw of installing in the adjacent holes, can conveniently assemble and disassemble, rotation.
Described triangular-notch weir is furnished with liftable baffle plate, and both are used to regulate flows out the water yield and test section flow rate of water flow.
Owing to adopted technique scheme, the present invention has the following advantages:
Being designed to the Dual-layer structure is in order to save material and space, to realize the self-loopa of water body;
Make two kinds of specification groynes sheets, the groove with holes of groynes sheet two ends termination compatibility test section bottom and the clamp bar on top are fixed with nut and bottom groove, both can satisfy groynes multi-form and combination, again can easy disassembly;
Realize the water body self-loopa fully, improved water body utilization rate of the present invention.
Description of drawings
Fig. 1 is the front view of this device among the embodiment;
Fig. 2 is the top view of this device among the embodiment;
Fig. 3 is the right view of this device among the embodiment
Fig. 4 is the left view of this device among the embodiment;
Fig. 5 is the structural representation of groove 4 with holes among Fig. 1;
Fig. 6 is groynes sheet 3 schematic diagrames among Fig. 1;
Fig. 7 is the structural representation that Fig. 1 intermediate cam weir and arch are crossed the water gallery;
Fig. 8 is the structural representation of grid 7 among Fig. 1.
Number in the figure: 1 is that interim reservoir, 2 is that energy dissipating plate, 3 is that groynes sheet, 4 is that groove with holes, 5 is that clamp bar with holes, 6 is that triangular-notch weir, 7 is grid, 8 cross the water gallery for arch, 9 is the pipe hole at interim reservoir top, 10 cross the pipe hole at water gallery top for arch, 11 is water pump, and 12 is the hole on the groove with holes.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment 1
Simulate the groynes of multi-form and various combination to the model test apparatus of current and influence to sediment effect---multifunction combined groynes model, general structure as shown in Figure 1, this invention mainly is comprised of two main parts: top test section and bottom water-stored section.This device comprises that energy dissipating plate 2, groove with holes 4, clamp bar with holes 5, triangular-notch weir 6, grid 7, arch cross water gallery 8, water pump 11.Energy dissipating plate 2 the place aheads are the ground sill that is installed in the high 13cm in bottom, and 10cm receives the top but the baffle plate of bottom hollow out 3cm behind the ground sill, forms one section interim reservoir 1, can effectively cut down the flow energy of water pump suction, steadily current.
The high 37cm of described test section, long 81cm, two upper lateral part mounting strap hole clamp bars, groove with holes is installed in the bottom, and groove 4 with holes is inserted in groynes sheet bottom, and the upper end is fixed with clamp bar 5 with holes and screw, can adjust according to the test needs size and the angle of groynes sheet, carry out any combination.
Triangular-notch weir 6 is positioned at the afterbody of test section, and the baffle plate that is positioned at triangular-notch weir 6 places can lift adjustment flow out the water yield and test section flow rate of water flow.The water of carrying drogue secretly flows through triangular-notch weir by grid 7, and the drogue of carrying secretly is trapped, and current enter arch by grid 7 and cross water gallery 8, realize system's water body self-loopa.
The course of work of this device: before the test, at first according to the test needs, groynes sheet 3 is installed, is made up adjustment; Secondly, in test section, put into water, connect water pump and corresponding water guide pipeline.Start water pump, partly extract water out from the water storage that is positioned at the bottom, send into the interim reservoir on top.Current are through the energy dissipating plate, and energy reduction enters test section after tending to be steady.Put into an amount of white drogue in the test section end, float floats on waterborne, with water movement, simulates the interaction situation of groynes and current, silt.From the motion of float, can observe streamflow regime, such as whirlpool, backflow, flow path etc., also can reflect washing away, depositing of simulation silt.Finally, current are being carried drogue secretly and are being crossed the diffluence of water gallery through grid 7 to arch, and drogue is trapped on the grid, do not enter arch and cross the water gallery and do not affect current.So far, the bottom water body can be again by water pump suction top, so circulation.