Snow flux measuring method adopting screen snow catching bag

Abstract

The invention discloses a snow flux measurement method adopting a screen snow catching bag, and belongs to the technical field of wind-blown snow flux measurement equipment. The problems that an existing actual measurement device is difficult to deploy, and snow blowing particles in different wind directions are difficult to collect are solved. Snow flux is calculated through a snow flux measuring method adopting a screen snow catching bag, snow blowing particles are caught through a multi-wind-direction snow catching instrument and a single-wind-direction snow catching instrument, and the multi-wind-direction snow catching instrument comprises a first mounting frame, a plurality of first fixing devices and a plurality of first snow catching devices; the single-wind-direction snow catcher comprises a second mounting frame, a plurality of second fixing devices and a plurality of second snow catching devices, the first snow catching device is movably connected to the first mounting frame through the first fixing device, and the second snow catching devices are movably connected to the second mounting frame through the second fixing devices. According to the invention, snow blowing disasters can be accurately predicted, and data can be conveniently and rapidly collected; the measurement result accuracy is improved; and the influence of wind speed on measurement results is reduced.

Description

Technical Field

[0001] The invention relates to a snow flux measurement method using a screen snow-catching bag, and belongs to the technical field of wind-blown snow flux measurement equipment. Background Art

[0002] Blowing snow refers to the process in which snow on the ground or snowfall in the sky migrates and re-accumulates under the influence of near-ground wind. Blowing snow is widely distributed and is very likely to cause disasters. Blowing snow can cause traffic jams, building collapses, and form snow cornices to trigger avalanches. Therefore, studying the physical process and snow transport mechanism of blowing snow is of great significance for preventing and controlling blowing snow disasters.

[0003] The mass flux of wind-blown snow is a key parameter to characterize the intensity of wind-blown snow transport. It represents the mass of snow particles passing through a unit area per unit time and is crucial to the prediction and assessment of blowing snow disasters. At present, the mass flux of wind-blown snow is mainly studied through outdoor measurements. The existing measurement method uses a photoelectric particle counter or a mechanical snow capture device to identify and capture blowing snow particles, thereby obtaining the relationship between wind speed and snow transport mass. However, the harsh outdoor environment of low temperature and strong wind in winter brings great inconvenience to the operation of experimenters; the wind resistance or backflow generated by the measuring device will reduce the efficiency of snow collection; the natural wind direction change will change the direction of the blowing snow flow, and the existing measuring device cannot collect blowing snow particles from different wind directions. Summary of the invention

[0004] The present invention is to solve the above problems and further provides a snow flux measurement method using a screen snow bag.

[0005] A snow flux measurement method using a screen snow bag comprises the following steps:

[0006] Step 1: Arrange single-direction snow catchers and multi-direction snow catchers at the measurement site. The snow bag opening of the single-direction snow catcher faces the main incoming wind direction. The heights of the snow bag center from the snow surface are h1, h2, ..h respectively. i ,...h j , adjust the disk height of the multi-wind direction snow catcher so that the center height of each snow bag of the multi-wind direction snow catcher is the same as the center height h of one snow bag of the single wind direction snow catcher i Keep consistent and adjust the snow bag direction of the multi-wind direction snow catcher so that any snow bag opening faces the main incoming flow direction;

[0007] Step 2: Measure the mass of all snow bags without snow, and install the snow bags on the snow catcher to collect the blowing snow particles;

[0008] Step 3: After completing a measurement, collect the blowing snow particles in each snow bag and weigh them. The mass of each snow bag with snow and the mass without snow are subtracted to get the mass of snow particles collected in a measurement. Assume that the mass of snow collected by each snow bag of a single wind direction snow capture instrument is m h1 ,m h2 ,....,m hi ,....,m hj , where h1,h2,..h i ,...h j is the height of the snow bag center from the ground. The snow mass collected by each snow bag of the multi-wind direction snow catcher is m d0 ,m d1 ,...,m dp ,....,m dq， where d0, d1, .. d p ,...d q is the angle between the snow bag and the main flow direction, d0 means the angle between the snow bag and the main flow direction is zero;

[0009] Step 4: Empty each snow bag and measure the mass of each snow bag without snow. Install the snow bag on the snow catcher and adjust the direction of the snow catcher to the main flow direction before starting the next measurement.

[0010] Under the current measurement, the angle between the main incoming wind direction and the ground height is h k The blowing snow flux at is calculated by the following formula: Where A is the opening area of ​​the snow bag and t is the current measured duration.

[0011] Furthermore, the multi-wind direction snow catcher includes a first mounting frame, a plurality of first fixing devices and a plurality of first snow catcher devices. The first mounting frame includes a first base plate and a first mounting steel pipe. The first mounting steel pipe is welded in a vertical direction at the center position of the first base plate. The first snow catcher device is inserted into the first mounting frame through the first fixing device.

[0012] Furthermore, the first snow-catching device includes a first rectangular frame, a first snow-catching bag and a first snow-catching steel pipe. The first snow-catching bag is bonded to the first rectangular frame, the lower surface of one end of the first snow-catching steel pipe is welded to the upper surface of the long side of the first rectangular frame, the bag opening of the first snow-catching bag faces away from the disc, and the other end of the first snow-catching steel pipe is inserted into the first fixing device.

[0013] Furthermore, the first fixing device includes a circular disc, a square clip and a plurality of first fixing steel pipes, the circular disc is sleeved on the outside of the first mounting steel pipe, the pipe diameter of the square clip is larger than the pipe diameter of the first mounting steel pipe, the square clip is sleeved on the outside of the first mounting steel pipe and welded to the upper surface of the circular disc, multiple side surfaces of the square clip are drilled and tapped and connected to the outside of the first mounting steel pipe by bolts, one end of the plurality of first fixing steel pipes is circumferentially welded to the lower surface of the circular disc along the same interval, and the other end of the first fixing steel pipe is inserted with a corresponding first snow-catching steel pipe and connected by bolts.

[0014] Furthermore, the first snow-catching bag is made of 100-mesh nylon screen, the opening of the first snow-catching bag is larger than the first rectangular frame, and the first U-shaped frame is welded to the upper surface of the first rectangular frame.

[0015] Furthermore, the single wind direction snow catcher includes a second mounting frame, a plurality of second fixing devices and a plurality of second snow catching devices, the second mounting frame includes a second base plate and a second mounting steel pipe, the second mounting steel pipe is welded in the vertical direction at the center position of the second base plate, and the second snow catching device is inserted into the second mounting frame through the second fixing device.

[0016] Furthermore, the second snow-catching device includes a second rectangular frame, a second snow-catching bag and a second snow-catching steel pipe, the second snow-catching bag is bonded to the second rectangular frame, the end face of one end of the second snow-catching steel pipe is welded to the outside of the short side of the second rectangular frame, and the other end of the second snow-catching steel pipe is inserted into the second fixing device.

[0017] Furthermore, the second fixing device includes a plurality of tiger clamps and a plurality of second fixed steel pipes, the plurality of tiger clamps are connected to the same side of the second mounting steel pipe by bolts, one end of the second fixed steel pipe is welded to the side of the tiger clamp away from the bolts, and the other end of the second fixed steel pipe is inserted with a corresponding second snow-catching steel pipe and connected by bolts.

[0018] Furthermore, the second snow-catching bag is made of 100-mesh nylon screen, the opening of the second snow-catching bag is larger than the second rectangular frame, and the second U-shaped frame is welded to the upper surface of the second rectangular frame.

[0019] Compared with the prior art, the present invention has the following effects:

[0020] The snow flux measurement method using a screen snow bag of the present invention calculates and evaluates the snow flux at different heights and wind directions by combining the measured data of snow blowing particles with a formula, and can accurately predict and evaluate snow blowing disasters.

[0021] The single wind direction snow catcher and the multi-wind direction snow catcher used in the snow flux measurement method using a screen snow catcher bag of the present invention are easy to deploy and install, and can be applied to various complex environments; the operation is simple, and the difficulty of outdoor measurement is reduced; in addition, it is convenient for measurement personnel to quickly collect data and improve work efficiency;

[0022] The snow flux measurement method using a mesh snow bag of the present invention uses a snow bag to capture blowing snow particles. The mesh snow bag has a large flow dispersion area and can effectively ventilate to reduce the obstruction to the incoming flow, thereby avoiding the reduction of snow capture efficiency and distortion of measurement results caused by backflow and wind blocking.

[0023] The multi-wind direction snow catcher in the snow flux measurement method using a screen snow bag described in the present invention is equipped with snow bags in multiple directions to collect blowing snow particles in different wind directions. Compared with a snow flux meter using a wind vane combined with a rotating base, the device can collect blowing snow particles in multiple wind directions without wind drive, and the measurement results are less affected by wind speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural diagram of the multi-wind direction snow catcher in the present invention;

[0025] Figure 2 It is an exploded view of the multi-wind direction snow catcher of the present invention;

[0026] Figure 3 It is a three-dimensional structural diagram of the first fixing device of the multi-wind direction snow catcher in the present invention;

[0027] Figure 4 It is a three-dimensional structural diagram of the first snow-catching device of the multi-wind direction snow-catching device of the present invention;

[0028] Figure 5 It is a three-dimensional structural diagram of a single wind direction snow catcher in the present invention;

[0029] Figure 6 It is an exploded view of the single wind direction snow catcher of the present invention;

[0030] Figure 7 It is a three-dimensional structural diagram of the second fixing device of the single wind direction snow catcher in the present invention;

[0031] Figure 8 It is a three-dimensional structural diagram of the second snow-catching device of the single wind direction snow-catching instrument in the present invention;

[0032] Among them: 1-first bottom plate, 2-first mounting steel pipe, 3-square buckle, 4-round disc, 5-first fixed steel pipe, 6-tiger clip, 7-first rectangular frame, 8-first snow-catching bag, 9-first U-shaped frame, 10-first snow-catching steel pipe, 11-second snow-catching steel pipe, 12-second fixed steel pipe, 13-second rectangular frame, 14-second snow-catching bag, 15-second U-shaped frame, 16-second bottom plate, 17-second mounting steel pipe. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Referring to the drawings of the specification, this embodiment is described, a snow flux measurement method using a screen snow bag, specifically comprising the following steps:

[0036] Step 1: Arrange single-direction snow catchers and multi-direction snow catchers at the measurement site. The snow bag opening of the single-direction snow catcher faces the main incoming wind direction. The heights of the snow bag center from the snow surface are h1, h2, ..h respectively. i ,...h j , adjust the height of the disk 4 of the multi-wind direction snow catcher so that the center height of each snow bag of the multi-wind direction snow catcher is the same as the center height h of one snow bag of the single wind direction snow catcher i Keep consistent and adjust the snow bag direction of the multi-wind direction snow catcher so that any snow bag opening faces the main incoming flow direction;

[0037] Step 2: Measure the mass of all snow bags without snow, and install the snow bags on the snow catcher to collect the blowing snow particles;

[0038] Step 3: After completing a measurement, collect the blowing snow particles in each snow bag and weigh them. The mass of each snow bag with snow and the mass without snow are subtracted to get the mass of snow particles collected in a measurement. Assume that the mass of snow collected by each snow bag of a single wind direction snow capture instrument is mh1 ,m h2 ,....,m hi ,....,m hj , where h1,h2,..h i ,...h j is the height of the snow bag center from the ground. The snow mass collected by each snow bag of the multi-wind direction snow catcher is m d0 ,m d1 ,...,m dp ,....,m dq， where d0, d1, .. d p ,...d q is the angle between the snow bag and the main flow direction, d0 means the angle between the snow bag and the main flow direction is zero;

[0039] Step 4: Empty each snow bag and measure the mass of each snow bag without snow. Install the snow bag on the snow catcher and adjust the direction of the snow catcher to the main flow direction before starting the next measurement.

[0040] Under the current measurement, the angle between the main incoming wind direction and the ground height is h k The blowing snow flux at is calculated by the following formula: Where A is the opening area of ​​the snow bag and t is the current measured duration.

[0041] The snow flux measurement method using a mesh snow bag described in the present invention calculates and evaluates the snow flux at different heights and wind directions by combining the data of the measured snow particles with a formula, and can accurately predict and evaluate snow disasters; the single-wind direction snow catcher and multi-wind direction snow catcher used in the snow flux measurement method using a mesh snow bag described in the present invention are easy to deploy and install, and can be applied to various complex environments; the operation is simple, which reduces the difficulty of outdoor measurement, and is also convenient for measurement personnel to quickly collect data and improve work efficiency; the snow flux measurement method using a mesh snow bag described in the present invention uses a single-wind direction snow catcher and a multi-wind direction snow catcher, which can be easily deployed and installed, and can be applied to various complex environments; the operation is simple, which reduces the difficulty of outdoor measurement, and is also convenient for measurement personnel to quickly collect data and improve work efficiency; The snow flux measurement method using a sieve snow bag adopts a snow bag to capture blowing snow particles. The sieve snow bag has a large flow dispersion area and can effectively ventilate to reduce obstruction to the incoming flow, thereby avoiding reduced snow capture efficiency and distortion of measurement results caused by backflow and wind blocking. The multi-wind direction snow catcher in the snow flux measurement method using a sieve snow bag described in the present invention is provided with snow bags in multiple directions to collect blowing snow particles in different wind directions. Compared with a snow flux measuring instrument using a wind vane combined with a rotating base, the present invention can collect blowing snow particles in multiple wind directions without wind drive, and the measurement results are less affected by wind speed.

[0042] The multi-wind direction snow catcher includes a first mounting frame, a plurality of first fixing devices and a plurality of first snow catching devices. The first mounting frame includes a first base plate 1 and a first mounting steel pipe 2. The first mounting steel pipe 2 is welded in the vertical direction at the center of the first base plate 1. The first snow catching device is inserted into the first mounting frame through the first fixing device. Preferably, the first base plate 1 is chamfered all around. The first mounting frame provides mounting positions for the plurality of first fixing devices and the plurality of first snow catching devices. The number of the first fixing devices corresponds to the number of the first snow catching devices. The blowing snow particles are captured by the first snow catching devices.

[0043] The first snow-catching device includes a first rectangular frame 7, a first snow-catching bag 8 and a first snow-catching steel pipe 10. The first snow-catching bag 8 is bonded to the first rectangular frame 7. The lower surface of one end of the first snow-catching steel pipe 10 is welded to the upper surface of the long side of the first rectangular frame 7. The opening of the first snow-catching bag 8 faces away from the disc 4. The other end of the first snow-catching steel pipe 10 is inserted into the first fixing device. The first snow-catching bag 8 collects blowing snow particles from different wind directions. The first rectangular frame 7 keeps the opening of the first snow-catching bag 8 open, effectively reducing the wind resistance of the first snow-catching bag 8, thereby making the measured data more accurate. By welding the lower surface of the first snow-catching steel pipe 10 to the long side of the first rectangular frame 7, it is convenient to face the opening of the first snow-catching bag 8 to any wind direction, thereby collecting blowing snow particles from different wind directions, and then accurately measuring the blowing snow flux.

[0044] The first fixing device includes a disc 4, a square buckle 3 and a plurality of first fixing steel pipes 5. The disc 4 is sleeved on the outside of the first mounting steel pipe 2. The diameter of the square buckle 3 is larger than the diameter of the first mounting steel pipe 2. The square buckle 3 is sleeved on the outside of the first mounting steel pipe 2 and welded to the upper surface of the disc 4. Multiple side surfaces of the square buckle 3 are drilled and tapped and connected to the outside of the first mounting steel pipe 2 by bolts. One end of the plurality of first fixing steel pipes 5 is welded to the lower surface of the disc 4 along the same interval circumferential direction. The other end of the first fixing steel pipe 5 is inserted with the corresponding first snow-catching steel pipe 10 and connected by bolts. Specifically, the square buckle 3 is made of a section of thick-walled square steel pipe. The diameter of the first fixing steel pipe 5 is slightly larger than the diameter of the first snow-catching steel pipe 10, so that the snow-catching device is inserted into the first fixing steel pipe 5. The disc 4 provides space for the setting of the first fixing steel pipe 5. The square buckle 3 is fixed to the first mounting steel pipe 2 by bolts.

[0045] The first snow-catching bag 8 is made of 100-mesh nylon mesh, the opening of the first snow-catching bag 8 is larger than the first rectangular frame 7, and the first U-shaped frame 9 is welded to the upper surface of the first rectangular frame 7. Specifically, the size of the first rectangular frame 7 is 10×5 cm. The opening of the first snow-catching bag 8 is larger than the first rectangular frame 7, which is convenient for the first snow-catching bag 8 to be bonded to the first rectangular frame 7. The bonding operation is relatively simple, easy to deploy and install, and can reduce the difficulty of outdoor actual measurement. The snow-catching bag made of nylon mesh can effectively ventilate to reduce the obstruction to the incoming flow, improve the snow-catching efficiency and the accuracy of the measurement results. Preferably, the first U-shaped frame 9 is made of bent iron wire, and the width of the first U-shaped frame 9 is adapted to the first rectangular frame 7, thereby ensuring that the first snow-catching bag 8 is always in an unfolded state, effectively reducing the wind resistance of the first snow-catching bag 8, and thereby improving the reliability of the measurement results.

[0046] The single wind direction snow catcher includes a second mounting frame, a plurality of second fixing devices and a plurality of second snow catching devices. The second mounting frame includes a second bottom plate 16 and a second mounting steel pipe 17. The second mounting steel pipe 17 is welded in the vertical direction at the center of the second bottom plate 16. The second snow catching device is inserted into the second mounting frame through the second fixing device. Preferably, the second bottom plate 16 is chamfered all around. The second mounting frame provides mounting positions for the plurality of second fixing devices and the plurality of second snow catching devices. The number of the second fixing devices corresponds to the number of the second snow catching devices. The second snow catching devices are used to capture the blowing snow particles.

[0047] The second snow-catching device comprises a second rectangular frame 13, a second snow-catching bag 14 and a second snow-catching steel pipe 11. The second snow-catching bag 14 is bonded to the second rectangular frame 13. The end face of one end of the second snow-catching steel pipe 11 is welded to the outside of the short side of the second rectangular frame 13. The other end of the second snow-catching steel pipe 11 is inserted into the second fixing device. The second snow-catching bag 14 is used to collect blowing snow particles of different heights. The second snow-catching bag 14 is kept in an open state by the second rectangular frame 13, which effectively reduces the wind resistance of the second snow-catching bag 14, thereby making the measured data more accurate. By welding the end face of the second snow-catching bag 14 to the outside of the short side of the second rectangular frame 13, it is convenient to arrange each second snow-catching bag 14 vertically along the main wind direction.

[0048] The second fixing device includes a plurality of slot clamps 6 and a plurality of second fixing steel pipes 12. The plurality of slot clamps 6 are all connected to the same side of the second mounting steel pipe 17 by bolts. One end of the second fixing steel pipe 12 is welded to the side of the slot clamp 6 away from the bolts. The other end of the second fixing steel pipe 12 is inserted with a corresponding second snow-catching steel pipe 11 and connected by bolts. The second fixing steel pipe 12 is fixed to the second mounting steel pipe 17 by the slot clamps 6. Specifically, the diameter of the second fixing steel pipe 12 is slightly larger than the diameter of the second snow-catching steel pipe 11, so that the snow-catching device can be inserted into the second fixing steel pipe 12, and the measuring personnel can quickly collect data and improve the working efficiency.

[0049] The second snow-catching bag 14 is made of 100-mesh nylon mesh, the opening of the second snow-catching bag (14) is larger than the second rectangular frame (13), and the second U-shaped frame (15) is welded to the upper surface of the second rectangular frame (13). Specifically, the size of the second rectangular frame 13 is 10×5 cm. The opening of the second snow-catching bag 14 is larger than the second rectangular frame 13, which facilitates the bonding of the second snow-catching bag 14 to the second rectangular frame 13. The bonding operation is relatively simple, easy to deploy and install, and can reduce the difficulty of outdoor measurement. The snow-catching bag made of nylon mesh can effectively ventilate to reduce the obstruction to the incoming flow, improve the snow-catching efficiency and the accuracy of the measurement results. Preferably, the second U-shaped frame 15 is made of bent iron wire, and the width of the second U-shaped frame 15 is adapted to the second rectangular frame 13, thereby ensuring that the second snow-catching bag 14 is always in an unfolded state, effectively reducing the wind resistance of the second snow-catching bag 14, and thereby improving the reliability of the measurement results.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for measuring snow flux using a mesh snow bag, characterized in that: The following steps are involved: Step 1: Arrange single-direction snow catchers and multi-direction snow catchers at the measurement site. The snow bag opening of the single-direction snow catcher faces the main incoming wind direction. The heights of the snow bag center from the snow surface are h1, h2, ..h respectively. i ,...h j , adjust the height of the disk (4) of the multi-wind direction snow catcher so that the center height of each snow bag of the multi-wind direction snow catcher is the same as the center height h of one snow bag of the single wind direction snow catcher i Keep consistent and adjust the snow bag direction of the multi-wind direction snow catcher so that any snow bag opening faces the main incoming flow direction; Step 2: Measure the mass of all snow bags without snow, and install the snow bags on the snow catcher to collect the blowing snow particles; Step 3: After completing a measurement, collect the blowing snow particles in each snow bag and weigh them. The mass of each snow bag with snow and the mass without snow are subtracted to get the mass of snow particles collected in one measurement. Assume that the mass of snow collected by each snow bag of the single wind direction snow capture instrument is m h1 ,m h2 ,....,m hi ,....,m hj , where h1,h2,..h i ,...h j is the height of the snow bag center from the ground. The snow mass collected by each snow bag of the multi-wind direction snow catcher is m d0 ,m d1 ,...,m dp ,....,m dq , where d0,d1,..d p ,...d q is the angle between the snow bag and the main flow direction, d0 means the angle between the snow bag and the main flow direction is zero; Step 4: Empty each snow bag and measure the mass of each snow bag without snow. Install the snow bag on the snow catcher and adjust the direction of the snow catcher to the main flow direction before starting the next measurement. Under the current measurement, the angle between the main incoming wind direction and the ground height is h k The blowing snow flux at is calculated by the following formula: Where A is the opening area of ​​the snow bag and t is the current measured duration.

2. A snow flux measurement method using a mesh snow bag according to claim 1, characterized in that: The multi-wind direction snow catcher comprises a first mounting frame, a plurality of first fixing devices and a plurality of first snow catcher devices. The first mounting frame comprises a first base plate (1) and a first mounting steel pipe (2). The first mounting steel pipe (2) is welded to the center position of the first base plate (1) in a vertical direction. The first snow catcher devices are inserted into the first mounting frame via the first fixing devices.

3. A snow flux measurement method using a mesh snow bag according to claim 2, characterized in that: The first snow-catching device comprises a first rectangular frame (7), a first snow-catching bag (8) and a first snow-catching steel pipe (10); the first snow-catching bag (8) is bonded to the first rectangular frame (7); the lower surface of one end of the first snow-catching steel pipe (10) is welded to the upper surface of the long side of the first rectangular frame (7); the opening of the first snow-catching bag (8) is oriented away from the disc (4); and the other end of the first snow-catching steel pipe (10) is inserted into the first fixing device.

4. A method for measuring snow flux using a mesh snow bag according to claim 2, characterized in that: The first fixing device comprises a disc (4), a square buckle (3) and a plurality of first fixing steel pipes (5); the disc (4) is sleeved on the outside of the first mounting steel pipe (2); the diameter of the square buckle (3) is larger than the diameter of the first mounting steel pipe (2); the square buckle (3) is sleeved on the outside of the first mounting steel pipe (2) and welded to the upper surface of the disc (4); multiple side surfaces of the square buckle (3) are drilled and tapped and connected to the outside of the first mounting steel pipe (2) by bolts; one end of the plurality of first fixing steel pipes (5) are circumferentially welded to the lower surface of the disc (4) at the same interval; the other end of the first fixing steel pipe (5) is inserted with a corresponding first snow-catching steel pipe (10) and connected by bolts.

5. The snow flux measurement method using a mesh snow bag according to claim 3, characterized in that: The first snow-catching bag (8) is made of 100-mesh nylon screen, the opening of the first snow-catching bag (8) is larger than the first rectangular frame (7), and the first U-shaped frame (9) is welded to the upper surface of the first rectangular frame (7).

6. A method for measuring snow flux using a mesh snow bag according to claim 1, characterized in that: The single wind direction snow catcher comprises a second mounting frame, a plurality of second fixing devices and a plurality of second snow catcher devices. The second mounting frame comprises a second base plate (16) and a second mounting steel pipe (17). The second mounting steel pipe (17) is welded to the center position of the second base plate (16) in the vertical direction. The second snow catcher device is inserted into the second mounting frame through the second fixing device.

7. A method for measuring snow flux using a mesh snow bag according to claim 6, characterized in that: The second snow-catching device comprises a second rectangular frame (13), a second snow-catching bag (14) and a second snow-catching steel pipe (11); the second snow-catching bag (14) is bonded to the second rectangular frame (13); the end face of one end of the second snow-catching steel pipe (11) is welded to the outside of the short side of the rectangular frame; and the other end of the second snow-catching steel pipe (11) is inserted into the second fixing device.

8. The snow flux measurement method using a mesh snow bag according to claim 6, characterized in that: The second fixing device comprises a plurality of slot clamps (6) and a plurality of second fixing steel pipes (12), wherein the plurality of slot clamps (6) are connected to the same side of the second mounting steel pipe (17) by bolts, one end of the second fixing steel pipe (12) is welded to the side of the slot clamp (6) away from the bolts, and the other end of the second fixing steel pipe (12) is inserted with a corresponding second snow-catching steel pipe (11) and connected by bolts.

9. The snow flux measurement method using a mesh snow bag according to claim 7, characterized in that: The second snow-catching bag (14) is made of 100-mesh nylon screen, the opening of the second snow-catching bag (14) is larger than the second rectangular frame (13), and the second U-shaped frame (15) is welded to the upper surface of the second rectangular frame (13).

Images