CN111025429A - Device and method for measuring spatial distribution of flood discharge atomization rainfall intensity of hydraulic model - Google Patents
Device and method for measuring spatial distribution of flood discharge atomization rainfall intensity of hydraulic model Download PDFInfo
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Abstract
The invention discloses a device and a method for measuring the spatial distribution of flood discharge atomization rainfall intensity of a hydraulic model, wherein the device comprises a base, a supporting unit arranged on the base and a rainfall collecting unit arranged on the supporting unit; the rainfall collecting unit consists of a horizontally arranged supporting panel and a plurality of rainfall collectors vertically arranged on the supporting panel, all the rainfall collectors are distributed at intervals in a matrix form, each rainfall collector consists of a collecting pipe and a measuring container, the collecting pipe is arranged on the supporting panel and integrally formed with the supporting panel, the upper end and the lower end of the collecting pipe protrude out of the plane where the supporting panel is located for a certain length, the outer surface of the lower end of the collecting pipe is provided with threads, the inner surface of the upper end of the measuring container is provided with threads matched with the threads of the collecting pipe, and the collecting pipe and the measuring container are fastened and connected through the threads; the outer wall of the measuring container is provided with numerical value scales. The device convenient operation, accuracy are high, can measure the rainfall intensity of whole flood discharge atomizing rainfall intensity spatial distribution.
Description
Technical Field
The invention belongs to the technical field of water conservancy and hydropower engineering, and particularly relates to a device and a method for measuring spatial distribution of flood discharge atomization rainfall intensity of a hydraulic model.
Background
In water conservancy projects, particularly in flood discharge of high dam projects, the atomization phenomenon is formed in the process of water discharge of a water discharge structure due to the fact that a high-speed water tongue is aerated and diffused in air or collides with the water tongue in the water discharge process. The rainfall intensity caused by atomization generated by hydraulic engineering is very huge, generally can reach hundreds of even thousands of mm/h, and far exceeds the rainfall intensity value (11.67mm/h) of the very heavy rainstorm in natural rainfall. Therefore, the method has great harm to the stability of the downstream bank slope, the safe operation of buildings, the traffic safety and the downstream ecological environment.
In recent years, after research and experiments by scholars at home and abroad, a method combining model experiments and theoretical analysis is formed for solving the problem of flood discharge and atomization of water discharge structures. However, the atomization phenomenon has certain difficulty in theoretical analysis, so that a hydraulic model experiment becomes a main technical means for researching the flood discharge atomization problem, however, the existing devices for measuring the flood discharge atomization rainfall of the hydraulic model are very few, the distribution of the atomization rainfall intensity in one plane can only be measured, meanwhile, the existing rainfall collector is used for collecting a container with a fixed range, when the rainfall intensity in a certain space is unknown, the small-range container cannot collect the rainfall in the space with large rainfall intensity for a long time, and the large-range container is easy to cause the measured rainfall intensity in the space with small rainfall intensity to have errors; or the rainfall collector adopts long hose and collection container intercommunication to carry out the rainfall and collects, so not only the operation is inconvenient, has the loss on the way moreover, has certain pressure in the hose simultaneously, can cause the influence to the rainwater that gets into the rainfall collector, and then causes the error to the experimental result.
Therefore, it is necessary to design a device for measuring the spatial distribution of flood discharge atomization rainfall intensity of a hydraulic model, which is convenient to operate and high in accuracy and can measure the rainfall intensity of the spatial distribution of the flood discharge atomization rainfall intensity.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a device and a method for measuring the spatial distribution of flood discharge atomization rainfall intensity of a hydraulic model, wherein the device is convenient to operate and high in accuracy, and can measure the rainfall intensity of the spatial distribution of the whole flood discharge atomization rainfall intensity.
The technical scheme of the invention is realized as follows:
the device for measuring the spatial distribution of flood discharge and atomization rainfall intensity of the hydraulic model comprises a base, a supporting unit arranged on the base and a rainfall collecting unit arranged on the supporting unit; the rainfall collecting unit comprises a horizontally arranged supporting panel and a plurality of rainfall collectors vertically arranged on the supporting panel, all the rainfall collectors are distributed at intervals in a matrix form, each rainfall collector comprises a collecting pipe and a measuring container, the collecting pipe is arranged on the supporting panel and integrally formed with the supporting panel, the upper end and the lower end of the collecting pipe protrude out of the plane where the supporting panel is located for a certain length, the outer surface of the lower end of the collecting pipe is provided with threads, the inner surface of the upper end of the measuring container is provided with threads matched with the threads of the collecting pipe, and the collecting pipe and the measuring container are fastened and connected through the threads; the outer wall of the measuring container is provided with numerical value scales, so that the collecting amount of rainfall in the measuring container can be conveniently known by reading the numerical value of the outer wall of the measuring container.
Further, the supporting panel is a grid-shaped rectangular plate, and all the rainfall collectors are respectively arranged at the intersection points of the corresponding grids.
Furthermore, the bottom of the measuring container is provided with a control switch, so that rainwater can be collected and drained from the measuring container conveniently through the control switch.
Furthermore, the base is composed of two horizontally arranged beams which are parallel to each other and a connecting beam which connects the two beams, and rollers are respectively arranged at two ends of each beam, so that the device can move on a plane conveniently through rolling the rollers.
The supporting unit is composed of two upright posts which are vertically arranged and respectively fixed on two cross beams, connecting cross beams are arranged at the top ends of the two upright posts, two ends of each connecting cross beam are respectively fixedly connected with the two upright posts, and pulleys are arranged on the connecting cross beams.
Support panel passes through link and steel cable setting on the support element, and the link comprises the riser of two vertical settings and the connecting block that is used for connecting two risers, is equipped with along length direction's recess on the riser, be equipped with the arch that the recess corresponds in the pole setting, riser and pole setting pass through recess and protruding connection, are convenient for realize through upper and lower sliding connection frame that rainfall collecting unit is the up-and-down motion on the stand, steel cable one end is fixed with the connecting block, and the other end is walked around the pulley and is fixed on the tie beam, is convenient for through adjusting steel cable lift support panel, realizes rainfall collecting unit's lift.
Furthermore, the pulley is arranged below the connecting beam and positioned at the middle point of the connecting beam, a through hole is formed in the center of the connecting block, and the steel rope penetrates through the through hole and is fixed with the connecting block; the manual pulley and the stopping assembly are arranged on the connecting beam, so that the length of the steel rope can be conveniently adjusted by rotating the manual pulley, and the manual pulley can be fixed by the stopping assembly to prevent the manual pulley from rotating.
Furthermore, a rain shield is arranged above the supporting panel and can be rotatably arranged at the top end of the supporting unit.
Furthermore, a locking mechanism is arranged on the roller, so that the roller can be conveniently fixed through the locking mechanism to fix the device.
Furthermore, a first diagonal brace is arranged between the cross beam and the corresponding vertical rod, one end of the first diagonal brace is fixedly connected with the cross beam, and the other end of the first diagonal brace is fixedly connected with the middle lower part of the corresponding vertical rod; and a second diagonal brace is arranged between the vertical block and the support panel, one end of the second diagonal brace is fixedly connected with the lower end of the vertical block, and the other end of the second diagonal brace is fixedly connected with the edge of the corresponding support panel.
Furthermore, scales are arranged on the stand column, so that the height of the rainfall collecting unit can be conveniently adjusted on the stand column.
The method for measuring the intensity spatial distribution of the flood discharge and atomization rainfall of the hydraulic model utilizes the measuring device for the intensity spatial distribution of the flood discharge and atomization rainfall of the hydraulic model to measure, and the specific method is as follows:
(1) observing the flood discharge atomization area to determine an area to be measured, moving and fixing the measuring device in the area to be measured, closing the control switch, then lifting the rain shield, starting timing while lifting the rain shield, after T minutes, putting down the rain shield, preventing water flow from continuously flowing into the rainfall collectors, completing one-time measurement, reading the rainfall collected by the measuring container within T minutes, and recording the rainfall value collected by each rainfall collector;
(2) opening a control switch, repeating the step (1) to carry out measurement for multiple times after water in the container to be measured completely flows out, averaging effective rainfall obtained through multiple measurements, and calculating the rainfall intensity of the corresponding coordinate (x, y, z) of each rainfall collector through the following formula;
in the formula: i is(x,y,z)-rainfall intensity at coordinates (x, y, z), mm/min;
q(x,y,z)-measuring the average rainfall, mL, collected by the container at coordinates (x, y, z);
effective water receiving area of S-collecting pipe, S ═ Pi D2[ 4 ] wherein D is the inner diameter of the collecting tube, mm2；
T-measurement time, s;
(3) keeping the x coordinate and the y coordinate of each rainfall collector unchanged, adjusting the upper position and the lower position of the rainfall collecting unit to change the z coordinate of each rainfall collector, and repeating the step (1) and the step (2) to obtain the rainfall intensity of the corresponding coordinate;
(4) and (5) moving the measuring device, and repeating the step (1), the step (2) and the step (3) to complete the measurement of the rain intensity of the whole area to be measured.
Compared with the prior art, the invention has the following beneficial effects:
1. the rainfall collector is formed by screwing the collecting pipe and the measuring container, is convenient to disassemble in the rainfall measuring process, can adopt the measuring containers with different measuring ranges aiming at different measuring points, reduces errors caused by rainfall measurement due to the measuring ranges, and ensures the accuracy of an experiment; and the long hose is avoided, so that rainwater cannot smoothly enter the measuring container due to the pressure, and the experimental accuracy is improved.
2. According to the rainfall measuring device, the roller is arranged on the base of the measuring device, so that the device can move on a plane, and the rainfall measuring unit can move in the height direction through the cooperation of the pulley, the steel rope and the manual pulley, so that the rainfall collecting unit of the measuring device can move in a rainfall intensity space, and further the rainfall distributed in the flood discharge atomization rainfall intensity space of the hydraulic model can be measured.
Drawings
Figure 1-front view of the invention.
Figure 2-side view of the invention.
Figure 3-top view of the invention.
Wherein: 1-a base; 1A-a beam; 1B-tie beam; 2-upright post; 3-a rainfall collecting unit; 3A-a support panel; 3B-a collection tube; 3C-a measuring vessel; 3D-control switch; 4-a pulley; 5-steel rope; 6-bulge; 7-a manual pulley; 8-a roller; 9-a stop assembly; 10-a locking mechanism; 11-connecting blocks; 12-a vertical block; 13-a first diagonal strut; 14-a second diagonal strut; 15-connecting the cross beam; 16-weather shield.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, 2 and 3, the device for measuring the spatial distribution of flood discharge and atomization rainfall intensity of a hydraulic model comprises a base 1, a supporting unit arranged on the base 1 and a rainfall collecting unit 3 arranged on the supporting unit; the rainfall collecting unit 3 comprises a horizontally arranged supporting panel 3A and a plurality of rainfall collectors vertically arranged on the supporting panel, all the rainfall collectors are distributed at intervals in a matrix form, each rainfall collector comprises a collecting pipe 3B and a measuring container 3C, the collecting pipe 3B is arranged on the supporting panel 3A and integrally formed with the supporting panel 3A, the upper end and the lower end of the collecting pipe 3B protrude out to correspond to the plane where the supporting panel 3A is located for a certain length, the outer surface of the lower end of the collecting pipe 3B is provided with threads, the inner surface of the upper end of the measuring container 3C is provided with threads matched with the threads of the collecting pipe 3B, and the collecting pipe 3B and the measuring container 3C are fixedly connected through the threads; be equipped with numerical value scale on measuring container 3C's the outer wall, be convenient for learn the collection volume of rainfall in the measuring container 3C through reading the numerical value of measuring container 3C outer wall.
The measuring vessel here can be a measuring cylinder which is threaded at its upper end. When the raininess of each measuring point is measured, in order to ensure the accuracy of the experiment, the longer the measuring time is, the better the measuring time is, generally 60-1000 s, and the time is timed by a stopwatch. In order to ensure the measurement accuracy, the same working condition is used for carrying out two measurements, and if the two measurements are different by more than 10%, the third measurement is repeated. Averaging the obtained effective values to obtain a final measured value, thereby calculating the raininess value of each measuring point, wherein the raininess calculation formula is as follows:
in the formula: i is(x,y)Represents the rainfall intensity (mm/min), q, at coordinates (x, y)(x,y)The reading indicating the amount of rain collected by the measuring container at the measuring point is mL, and S ═ pi D2Per 4 is the effective water receiving area (mm) of the collecting pipe2) And T is a measurement time(s).
After the collecting pipe and the measuring container are arranged like this, the disassembly is convenient, the measuring containers with different measuring ranges are conveniently replaced for measurement aiming at different measuring points, the measuring container with large measuring range is used in the place with large rainfall, the measuring container with small rainfall can be used in the place with small rainfall, the measuring error caused by the measuring range of the measuring container is reduced, and the experiment precision is guaranteed.
In specific implementation, the supporting panel 3A is a grid-shaped rectangular plate, and all the rainfall collectors are respectively arranged at the intersection points of the corresponding grids.
Like this, supporting panel is except that supporting collecting pipe part, and all the other fretwork settings that are, when adopting this device to measure, the rainwater directly drops through fretwork part to can avoid the rainwater to collide behind the supporting panel splash to produce the influence in the collecting pipe to the test result.
During specific implementation, the bottom of the measuring container 3C is provided with the control switch 3D, so that rainwater can be collected and drained from the measuring container conveniently through the control switch 3D.
Like this, when the rainwater was collected to needs, closed control switch just can collect, and the test is stopped after the certain time, reads numerical value and record on the measuring vessel outer wall, then opens control switch, closes control switch alright carry out next time measurement after the rainwater that will measure in the container is arranged to the greatest extent.
During specific implementation, the base 1 is composed of two horizontally arranged beams 1A parallel to each other and a connecting beam 1B connecting the two beams 1A, and rollers 8 are respectively arranged at two ends of each beam 1A, so that the device can move on a plane conveniently through the rolling rollers 8.
Therefore, the device can move back and forth and left and right on a plane by rolling the rollers on the base.
The supporting unit is two stand columns 2, the two stand columns 2 are vertically arranged and are respectively fixed on two cross beams 1A, connecting cross beams 15 are arranged at the top ends of the two stand columns, two ends of each connecting cross beam 15 are respectively fixedly connected with the two stand columns 2, and pulleys 4 are arranged on the connecting cross beams 15.
In specific implementation, the pulley 4 is arranged below the connecting beam 15 and at the midpoint of the connecting beam 15, a through hole is formed in the center of the connecting block 11, and the steel rope 5 penetrates through the through hole and is fixed with the connecting block 11; the connecting beam 1B is provided with a manual pulley 7 and a stopping component 9, so that the length of the steel rope 5 can be conveniently adjusted by rotating the manual pulley 7, and the manual pulley 7 can be fixed by the stopping component 9 to prevent the manual pulley 7 from rotating.
In specific implementation, a rain shield 16 is arranged above the supporting panel 3A, and the rain shield 16 is rotatably arranged at the top end of the supporting unit. When the rain shield is horizontally arranged, the vertical projection of the rain shield covers the supporting panel 3A completely
Like this, when accomplishing a measurement, can put down the weather shield and carry out the reading to the numerical value of measuring the container to the record, open control switch row after the completion and carry out the measurement once more, during the measurement, start the timing when lifting up the weather shield, put down the weather shield and stop the timing, read the numerical value of measuring the container again, avoided the mobile device, also need not close the hydraulic model test, guarantee to carry out multiple measurements on the same position coordinate, guarantee the accuracy of experimental data.
In specific implementation, a locking mechanism 10 is arranged on the roller 8, so that the roller 8 can be fixed through the locking mechanism 10 to fix the device.
When the device is moved to a determined position through rolling of the roller, the roller is locked through the locking mechanism, so that the whole device is fixed, and the device is simple and convenient to operate and reliable.
In specific implementation, a first inclined strut 13 is arranged between the crossbeam 1A and the corresponding upright 2, one end of the first inclined strut 13 is fixedly connected with the crossbeam 1A, and the other end of the first inclined strut 13 is fixedly connected with the middle lower part of the corresponding upright 2.
This enhances the stability of the device by providing a first diagonal strut between the transverse beam and the upright.
In specific implementation, a second diagonal brace 14 is arranged between the vertical block 12 and the support panel 3A, one end of the second diagonal brace 14 is fixedly connected with the lower end of the vertical block 12, and the other end is fixedly connected with the side where the corresponding support panel 3A is located.
In this way, the second diagonal brace can perform a good supporting function on the supporting panel, and meanwhile, the stability of the device is enhanced.
During specific implementation, scales are arranged on the upright post 2, so that the height of the rainfall collecting unit 3 can be conveniently adjusted on the upright post 2.
The measurement is carried out by using the device for measuring the space distribution of flood discharge atomization rainfall intensity of the hydraulic model, and the specific method comprises the following steps:
(1) after the spray tongue collides, atomizing phenomena are generated around, a flood discharge atomizing area is observed to determine an area to be measured, a measuring device is moved and fixed in the area to be measured, a control switch is closed, a rain baffle is lifted, timing is started while the rain baffle is lifted, the rain baffle is put down after T minutes, water flow is prevented from continuously flowing into a rainfall collector, one-time measurement is completed, the rainfall collected by a measuring container in T minutes is read, and the rainfall value collected by each rainfall collector is recorded;
here, each rainfall collector corresponds to a measuring point.
(2) Opening a control switch, repeating the step (1) to carry out measurement for multiple times after water in the container to be measured completely flows out, and averaging effective rainfall obtained by multiple measurements, wherein the effective rainfall is a rainfall value of which the numerical value of the multiple measurements is not more than 10%; calculating the rainfall intensity of the corresponding coordinate (x, y, z) of each rainfall collector through the following formula;
in the formula: i is(x,y,z)-rainfall intensity at coordinates (x, y, z), mm/min;
q(x,y,z)-measuring the average rainfall, mL, collected by the container at coordinates (x, y, z);
effective water receiving area of S-collecting pipe, S ═ Pi D2[ 4 ] wherein D is the inner diameter of the collecting tube, mm2；
T-measurement time, s;
(3) keeping the x coordinate and the y coordinate of each rainfall collector unchanged, adjusting the upper position and the lower position of the rainfall collecting unit to change the z coordinate of each rainfall collector, and repeating the step (1) and the step (2) to obtain the rainfall intensity of the corresponding coordinate;
it is possible here to select several different Z coordinates for measurement in the region to be measured, so that (x, y, Z) is obtained1)、(x,y,z2),(x,y,z3) ... rainfall intensity at different measuring points.
(4) And (5) moving the measuring device, and repeating the step (1), the step (2) and the step (3) to complete the measurement of the rain intensity of the whole area to be measured.
Because the area that the water droplet influences the region is generally greater than rainfall collecting element's area, through adjusting base horizontal position and adjusting the upper and lower position in rainfall collecting element space, repeated measurement step to accomplish the spatial measurement in whole flood discharge atomizing rainfall intensity space.
Finally, it should be noted that the above-mentioned examples of the present invention are only examples for illustrating the present invention, and are not intended to limit the embodiments of the present invention. Variations and modifications in other variations will occur to those skilled in the art upon reading the foregoing description. Not all embodiments are exhaustive. All obvious changes and modifications of the present invention are within the scope of the present invention.
Claims (10)
1. The device for measuring the spatial distribution of flood discharge and atomization rainfall intensity of the hydraulic model comprises a base, a supporting unit arranged on the base and a rainfall collecting unit arranged on the supporting unit; the rainfall collecting unit comprises a horizontally arranged supporting panel and a plurality of rainfall collectors vertically arranged on the supporting panel, and all the rainfall collectors are distributed at intervals in a matrix form, and is characterized in that the rainfall collectors comprise collecting pipes and measuring containers, the collecting pipes are arranged on the supporting panel and are integrally formed with the supporting panel, the upper ends and the lower ends of the collecting pipes protrude out of the plane where the supporting panel is located for a certain length, threads are arranged on the outer surface of the lower end of the collecting pipes, threads matched with the threads of the collecting pipes are arranged on the inner surface of the upper end of the measuring container, and the collecting pipes and the measuring containers are fastened and connected through the threads; the outer wall of the measuring container is provided with numerical value scales, so that the collecting amount of rainfall in the measuring container can be conveniently known by reading the numerical value of the outer wall of the measuring container.
2. The apparatus for measuring the spatial distribution of flood discharge and atomization rainfall intensity of a hydraulic model according to claim 1, wherein the supporting panel is a grid-shaped rectangular plate, and all the rainfall collectors are respectively arranged at the intersection points of the corresponding grids.
3. The apparatus for measuring the spatial distribution of flood discharge and atomization rainfall intensity of a hydraulic model according to claim 1, wherein the bottom of the measuring container is provided with a control switch for collecting rainwater and draining the rainwater collected in the measuring container.
4. The device for measuring the spatial distribution of flood discharge and atomization rainfall intensity of the hydraulic model according to any one of claims 1 to 3, wherein the base is composed of two horizontally arranged beams which are parallel to each other and a connecting beam which connects the two beams, and rollers are respectively arranged at two ends of each beam, so that the device can move on a plane conveniently through rolling the rollers;
the supporting unit is composed of two upright posts which are vertically arranged and respectively fixed on two cross beams, connecting cross beams are arranged at the top ends of the two upright posts, two ends of each connecting cross beam are respectively fixedly connected with the two upright posts, and pulleys are arranged on the connecting cross beams;
support panel passes through link and steel cable setting on the support element, and the link comprises the riser of two vertical settings and the connecting block that is used for connecting two risers, is equipped with along length direction's recess on the riser, be equipped with the arch that the recess corresponds in the pole setting, riser and pole setting pass through recess and protruding connection, are convenient for realize through upper and lower sliding connection frame that rainfall collecting unit is the up-and-down motion on the stand, steel cable one end is fixed with the connecting block, and the other end is walked around the pulley and is fixed on the tie beam, is convenient for through adjusting steel cable lift support panel, realizes rainfall collecting unit's lift.
5. The device for measuring the spatial distribution of flood discharge and atomization rainfall intensity of a hydraulic model according to claim 4, wherein the pulley is arranged below the connecting beam and at the midpoint of the connecting beam, a through hole is formed in the center of the connecting block, and the steel rope penetrates through the through hole and is fixed with the connecting block; the manual pulley and the stopping assembly are arranged on the connecting beam, so that the length of the steel rope can be conveniently adjusted by rotating the manual pulley, and the manual pulley can be fixed by the stopping assembly to prevent the manual pulley from rotating.
6. The apparatus for measuring the spatial distribution of flood discharge and atomized rainfall intensity of a hydraulic model according to claim 5, wherein a rain shield is provided above the supporting panel, and the rain shield is rotatably provided at the top end of the supporting unit.
7. The device for measuring the spatial distribution of flood discharge and atomization rainfall intensity of a hydraulic model according to claim 4, wherein the roller is provided with a locking mechanism, so that the roller can be fixed through the locking mechanism to fix the device.
8. The device for measuring the spatial distribution of flood discharge and atomization rainfall intensity of a hydraulic model according to claim 4, wherein a first diagonal brace is arranged between the cross beam and the corresponding vertical rod, one end of the first diagonal brace is fixedly connected with the cross beam, and the other end of the first diagonal brace is fixedly connected with the middle lower part of the corresponding vertical rod; and a second diagonal brace is arranged between the vertical block and the support panel, one end of the second diagonal brace is fixedly connected with the lower end of the vertical block, and the other end of the second diagonal brace is fixedly connected with the edge of the corresponding support panel.
9. The device for measuring the spatial distribution of flood discharge and atomization rainfall intensity of a hydraulic model according to claim 4, wherein scales are provided on the upright post to facilitate the height adjustment of the rainfall collecting unit on the upright post.
10. The method for measuring the intensity spatial distribution of the flood discharge and atomization rainfall of the hydraulic model is characterized in that the device for measuring the intensity spatial distribution of the flood discharge and atomization rainfall of the hydraulic model disclosed by claim 6 is used for measurement, and the specific method is as follows:
(1) observing the flood discharge atomization area to determine an area to be measured, moving and fixing the measuring device in the area to be measured, closing the control switch, then lifting the rain shield, starting timing while lifting the rain shield, after T minutes, putting down the rain shield, preventing water flow from continuously flowing into the rainfall collectors, completing one-time measurement, reading the rainfall collected by the measuring container within T minutes, and recording the rainfall value collected by each rainfall collector;
(2) opening a control switch, repeating the step (1) to carry out measurement for multiple times after water in the container to be measured completely flows out, averaging effective rainfall obtained through multiple measurements, and calculating the rainfall intensity of the corresponding coordinate (x, y, z) of each rainfall collector through the following formula;
in the formula: i is(x,y,z)-rainfall intensity at coordinates (x, y, z), mm/min;
q(x,y,z)-measuring the average rainfall, mL, collected by the container at coordinates (x, y, z);
effective water receiving area of S-collecting pipe, S ═ Pi D2[ 4 ] wherein D is the inner diameter of the collecting tube, mm2；
T-measurement time, s;
(3) keeping the x coordinate and the y coordinate of each rainfall collector unchanged, adjusting the upper position and the lower position of the rainfall collecting unit to change the z coordinate of each rainfall collector, and repeating the step (1) and the step (2) to obtain the rainfall intensity of the corresponding coordinate;
(4) and (5) moving the measuring device, and repeating the step (1), the step (2) and the step (3) to complete the measurement of the rain intensity of the whole area to be measured.
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| CN113093312A (en) * | 2021-04-08 | 2021-07-09 | 中国水利水电科学研究院 | Method for quickly calibrating rain intensity parameters in indoor rainfall experiment |
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