CN107604874A

CN107604874A - Secondary position control method in a kind of river model test

Info

Publication number: CN107604874A
Application number: CN201710977588.XA
Authority: CN
Inventors: 奚斌
Original assignee: Yangzhou University
Current assignee: Yangzhou University
Priority date: 2017-10-19
Filing date: 2017-10-19
Publication date: 2018-01-19
Anticipated expiration: 2037-10-19
Also published as: CN107604874B

Abstract

Secondary position control method in a kind of river model test, is related to river model production field, concretely comprises the following steps：1）Two positions in a river model are taken respectively to determine a datum mark as benchmark position and on benchmark position；2）Two benchmark positions and two datum marks corresponding to being found on secondary model drawing；3）Secondary making characteristic point is measured in secondary model drawing respectively to the distance of two datum marks, further according to position of the numerical value measured in secondary model drawing in a river model using two datum marks as the true each secondary making characteristic point of basic point；4）River model is modified making according to the secondary characteristic point drawn.The inventive method by the use of the topography and geomorphology of an original river model characteristic point as the basic point of secondary positioning, precisely, quickly to find and realize that secondary making anchor point this method both succinctly facilitated, positioning is quick, in turn ensure that the precision of positioning.

Description

Secondary position control method in a kind of river model test

Technical field

The present invention relates to river model production field, secondary position control method in specially a kind of river model test.

Background technology

The river model made first is usually to be completed using sectional board method, and the river course on a river model is determined Site almost all after the completion of modelling is covered by river model, can not be utilized in secondary model making.

And current river model test research process, generally require first under a kind of river topography Geomorphological States to river course Studied with some current key elements of hydraulic structure, then herein on basis, local directed complete set is carried out to model river course（It is whole Control）, then corresponding key element is analyzed, needs to carry out secondary making to model during this, this is just in modelling Secondary position monitoring and control problem is produced, the datum mark that leaves is made first according to model in the past to carry out secondary positioning, head can be run into The secondary datum mark left can not find, or be shifted, it is impossible to ensure after the secondary making of model riverbed physiognomy with design it is consistent, other Method is also difficult to ensure that precision, and time-consuming cumbersome.

Therefore it is just very necessary to provide a kind of succinct method for the secondary position monitoring and control for adapting to such experiment process.

The content of the invention

It is an object of the invention to provide a kind of position control method of the secondary making of river model, this method utilizes original river Basic point of the characteristic point of the topography and geomorphology of road model as secondary positioning, realize the accurate measurement of secondary making anchor point.

Realizing the technical scheme of above-mentioned purpose is：Secondary position control method in a kind of river model test, its feature exist In：Determined by the use of the point that the feature in a river model is obvious, does not change position in secondary making as secondary model making Position control point, modification again is carried out to a river model and made；

Specifically comprise the following steps：

1）Take feature in a river model obvious and it is secondary make two constant positions of shape, position as benchmark position, And a datum mark is respectively determined on benchmark position；

2）Corresponding two benchmark positions and two datum marks are being found on secondary model drawing corresponding to secondary making river model, And two datum marks on secondary model drawing are marked；

3）Secondary making characteristic point is measured in secondary model drawing respectively to the distance of two datum marks, further according to secondary model figure The numerical value measured in paper determines that each secondary making is special using two datum marks as basic point in a river model using intersection Levy the position of point；

4）River model is modified making according to the secondary characteristic point drawn.

The inventive method by the use of the topography and geomorphology of an original river model characteristic point as secondary positioning basic point, come Precisely, quickly find and realize secondary making anchor point, so as to complete to carry out secondary making redjustment and modification to model, this method was both Succinct convenient, positioning is quick, in turn ensure that the precision of positioning.

Further, step 1）In benchmark position be plane.

Further, in step 3）It is middle first by the benchmark position on secondary model drawing by the big in proportion of river model It is small to print, and be correspondingly attached to corresponding to a river model on position, it is easy on a river model to secondary making Characteristic point intersection can accurately identify when drawing to datum mark.

Brief description of the drawings

Fig. 1 is that a river model makes landforms partial schematic plan view；

Fig. 2 is the schematic diagram of two benchmark positions on a river model；

Fig. 3 utilizes the secondary method signal for making anchor point of the model drawing positioning being covered on a river model benchmark position Figure.

Embodiment

1-3 below in conjunction with the accompanying drawings, the observing and controlling principle and observing and controlling process of the present invention are elaborated

Secondary position control method in a kind of river model test, it is characterised in that：It is bright using the feature in a river model The allocation control points that the point of position makes as secondary model are not changed in aobvious, secondary making, a river model is carried out again Secondary modification makes；

Specifically comprise the following steps：

1）Take feature in a river model 1 obvious and the secondary two constant positions of shape, position that make are as benchmark Position, and a datum mark is respectively determined on benchmark position；

In the present embodiment, island 2,3 is taken respectively to determine a benchmark on island 2,3 as benchmark position on a river model Point 4,5, wherein, benchmark position can be plane but be not limited to plane, and benchmark position, the selection standard of datum mark are that feature is obvious, just In identification, and its shape, position are constant during secondary making, and those skilled in the art can arbitrarily select according to above-mentioned condition, It is not limited to island.

2）Found and the benchmark position on a river model 1 on secondary model drawing corresponding to secondary making river model Two datum marks 4,5 on corresponding two islands 2,3 and island 2,3, and to two datum marks on secondary model drawing 4th, 5 it is marked；

3）Benchmark position on secondary model drawing is printed by the size in proportion of a river model 1, and is correspondingly attached to Corresponding to river model 1 on island 2,3, then with two datum marks 4,5 on secondary model drawing it is basic point, in secondary mould Secondary making characteristic point is measured in type drawing respectively to the distance of two datum marks 4,5, further according to what is measured in secondary model drawing Numerical value determines each secondary making feature for basic point with the datum mark 4,5 of two marks in a river model using intersection The position of point；

Secondary making characteristic point of the present invention refers to border turning point, circular arc center of circle etc., profit in secondary making model The border of secondary model making can be linked out with series of features point, and then completes model plane control.

Claims

A kind of 1. secondary position control method in river model test, it is characterised in that：Utilize the feature in a river model Substantially, the allocation control points that the point do not changed in secondary making makes as secondary model, a river model is carried out again Modification makes；

Specifically comprise the following steps：

1）Take feature in a river model obvious and it is secondary make two constant positions of shape, position as benchmark position, And a datum mark is respectively determined on benchmark position；

2）Corresponding two benchmark positions and two datum marks are being found on secondary model drawing corresponding to secondary making river model, And two datum marks on secondary model drawing are marked；

3）Secondary making characteristic point is measured in secondary model drawing respectively to the distance of two datum marks, further according to secondary model figure The numerical value measured in paper determines that each secondary making is special using two datum marks as basic point in a river model using intersection Levy the position of point；

4）River model is modified making according to the secondary characteristic point drawn.
2. secondary position control method in a kind of river model test according to claim 1, it is characterised in that：Step 1） In benchmark position be plane.
3. secondary position control method in a kind of river model test according to claim 2, it is characterised in that：In step 3）It is middle first to print the benchmark position on secondary model drawing by the size in proportion of a river model, and it is attached to a river Corresponding to work model on position, being easy to can be to datum mark when being drawn on a river model to secondary making characteristic point intersection Accurately identified.