35 results about "Rainfall simulator" patented technology

A multi-operating mode frame type portable landslide testing device for a geomechanical model belongs to the field of geological hazard model test. The testing device comprises a frame-beam-type testing bed, a rainfall simulator, a water level regulator and a self-weight horizontal loading mechanism, wherein the frame-beam-type testing bed mainly comprises a cuboid framework, a front panel, a rear panel and a base plate; the rainfall simulator is arranged at the top of the frame-beam-type testing bed and comprises a plurality of spraying pipes and nozzles on the spraying pipes and is used for simulating rainfall in the frame-beam-type testing bed; the water level regulator comprises a left-side trough and a right-side trough respectively formed on the left and the right sides of the frame-beam-type testing bed, and a plurality of drainage holes are respectively formed on the right panel of the left-side trough and the left panel of the right-side trough and used for changing the water levels of water level simulation libraries in the left-side trough and the right-side trough; and the self-weight horizontal loading mechanism is arranged above the right-side trough and used for bearing weights, so as to exert horizontal load to the landslide model in the frame-beam-type testing bed.

The invention discloses an expansive-soil slope hygroscopic deformation model experiment method and a system. The expansive-soil slope hygroscopic deformation model experiment method comprises following steps: A, soil samples are turned and subjected to sun drying so as to control water content and soil filling thickness; B, soil filling is carried out by layers, slope cutting is carried out uniformly, and a part of monitoring components are buried; C, an obtained soil slope is allowed to stand until cracks are generated, and a displacement sensor is arranged; D, physical quantity initial values are recorded; E, a rainfall simulator is used for realizing dropping-pouring type concentrated rainfall, and rainfall amount is controlled; F, physical quantities and rainfall amount are monitored according to rainfall stages; G, a rainfall-evaporation cycle is carried out repeatedly so as to stimulate drying and watering cycle; and H, slope morphologic change is recorded, and results are analyzed. The system comprises a model case, monitoring components, and a rainfall simulator; the monitoring components are arranged in the model case; and the rainfall simulator is arranged on the upper part slope shoulder of the model case. The expansive-soil slope hygroscopic deformation model experiment method and the system are suitable for a plurality of expansive-soil slope hygroscopic deformation model experiments, and possess significant importance for researches on expansive-soil slope stability and catastrophe mechanisms.

The invention discloses an intelligent artificial rainfall simulator which comprises a circulating water supply system, an intelligent controller, a computer and software system, a distributed spraying rainfall device, a movable telescopic test frame and a wind-proof structure. An upper spray pipe, a lower spray pipe and sprayers are combined to form the distributed spraying rainfall device, the diameter of the upper spray pipe is different from that of the lower spray pipe, the diameters of the sprayers correspond to those of spray nozzles, the wind-proof structure is arranged below the rainfall device, can be fixed on the inner side of the test frame and prepared from polymer in a formula I, Mw of the high-molecular polymer is 5.115*104, and a molecular weight distribution index is 1.761.

The invention discloses a multifunctional test platform for landslide impact strength, comprising a slide channel, an accumulating channel, a supporting adjusting device arranged at the bottom of theslide channel, landslide impact sensors arranged in different positions in the accumulating channel, a data collection device arranged outside a test model channel and connected with the landslide impact sensors, and a rainfall simulator arranged above the slide channel; the slide channel and the accumulating channel are uniform in sectional size and are each formed by assembling a plurality of unit model channels 1 m in length and 1 m*1 m in inner diameter. The multifunctional test platform for landslide impact strength has the advantages that multifunctional landslide physical simulation experiments, such as rainfall-induced landslide mechanism analysis, landslide rock-soil deformation monitoring analysis, landslide speed monitoring and landslide impact test analysis can be carried out,and an experimental apparatus is simple and firm, convenient to disassemble and assemble; the multifunctional reusable test platform based on based on multiple variables is suitable for the scientificresearch and utilization of landslide disaster, and is worthy of popularization and application.

The invention discloses an indoor artificial rainfall-simulation testing system. The indoor artificial rainfall-simulation testing system is mainly composed of a water supply system, a rainfall simulator, a test chamber and a water sampling device, wherein the water supply system is mainly composed of an artificial rainwater storage water tank, a flow sensor, a submersible pump, an air-operated thin film regulating valve and a water duct; the rainfall simulator is mainly composed of a rainfall support, a micro sprinkler and a universal pipe; the testing chamber is composed of a testing chamber body, a humidity sensor, an air pressure sensor, a temperature sensor and a stainless steel drain pipe; the water sampling device is composed of a stainless steel drain pipe, a funnel-shaped liquid collector and a manual water valve. The indoor artificial rainfall-simulation testing system is used for indoor rainfall simulation, for weather and rainfall characteristics of different areas, through a Chicago rainstorm process curve model and different spray head combining forms, the control and change of rainfall intensity in time and space can be achieved, and the rainfall intensity can be recorded in real time.

The invention belongs to the technical field of research devices for water and soil conservation, and discloses a device for establishing a water-collecting effect test for urban water permeable surfaces. The device is characterized by mainly comprising a radial flow measuring device, a rainfall infiltration test surface and a rainfall simulator. The radial flow measuring device comprises a collecting groove, a collecting tank, a synchronous micro diving pump, a radial flow tank, an adjustable water control valve and a stop watch part, and adopts a transfer type measuring method to measure radial flow. The rainfall infiltration test surface uses a combined steel plate pile as a side wall to separate out an observation surface; the rainfall simulator comprises a rainfall spray head, an adjustable flat base and a water supply system; and a base bracket can keep horizontal through adjusting three lead screws respectively, so that the device is suitable for various sloping surfaces. The water supply system mainly comprises a water control valve, a water supply tank with primary and secondary structures, a first diving pump and a second diving pump. The secondary tank is positioned in the primary tank. The device has the effects and advantages of little influence on surrounding environment, accuracy and flexibility, little water usage, and low cost.

The invention discloses a field artificial rainfall simulator comprising a water tank. The water tank is fixed to the ground by means of a leveling support. Plate levels are arranged at the top of the water tank. Needles for simulating rainfall are arranged at the bottom of the water tank. The water tank is connected to a magnetic pump arranged in a water storage tank by means of a water inlet pipe. The magnetic pump is used for injecting a solution in the water storage tank into the water tank. The solution in the water tank flows into the water storage tank via an overflow water outlet pipe which is movably mounted on a water level adjusting support. According to the field artificial rainfall simulator and an application method thereof provided in the invention, a water level-rainfall intensity relation curve only needs to be measured once, and one water level corresponds to one rainfall intensity, thereby avoiding the problem of measuring the rainfall intensities before every experiment. The height of the overflow water outlet pipe is adjusted to control the water level in the water tank, thereby control the rain intensity, and then continuously varying rainfall intensities can be obtained without repeatedly changing needles. In addition, local evaporation capacity can be roughly obtained. The field artificial rainfall simulator is applicable to complex terrains in field, and the method is simple, and easy to operate, high in working efficiency, showing a broad application prospect.

The invention discloses a soft rock disintegration test system for simulating natural environments. The system is provided with a box body, wherein a lighting simulator, a temperature control device, a rainfall simulator, a wind simulator, a soft rock disintegration grain size grading and metering device, a monitoring device and an air humidity and temperature device are installed inside the box body. The system integrates the five natural factors of rainfall, lighting, temperature, humidity and wind, can simulate multiple natural environments required by soft rock disintegration, can provide an indoor site for simulating the natural environments for the research of soft rock disintegration, effectively overcomes the difficulty in outdoor research, has the advantage of cheaper and more economical required equipment, and can effectively reduce the research expenditure. The system has the characteristics of simple structure and reasonable design, can simulate the soft rock disintegration under multiple climatic conditions in the natural environments, can truly and comprehensively reflect the overall soft rock disintegration process, and can quantitatively obtain information in every respect by screening the conditions for reflecting disintegration. The system has the advantages of high practicality and favorable use effects, and is convenient to be popularized and applied.

The invention discloses an integrated meteorological observation environment simulation device. The device includes a semi-closed sunshade, rainfall simulators, a first controller, snowfall simulators, a second controller, refrigerators, drizzle simulators, a third controller, a hail simulator, a fourth controller, a regulator, a remote test platform and image collection units, wherein the rainfall simulators, the first controller, the snowfall simulators, the second controller, the refrigerators, the drizzle simulators, the third controller, the hail simulator, the fourth controller, the regulator, the remote test platform and the image collection units are disposed in the semi-closed sunshade. The device realizes the rapid and controllable simulation of five kinds of rainfall weather phenomena such as drizzle, rain, snow, sleet and hail in a closed space and provides a detection environment. Actual measurement results show that in a simulated environment, a Doppler-type rainfall radar can continuously and stably identify the five kinds of weather phenomena such as drizzle, rain, snow, sleet and hail and can detect the particle size and speed of the hail. The device can provide the controllable and reproducible detection environment for evaluating the identification accuracy of a rainfall weather phenomenon instrument.

The invention discloses a device for in-situ rainfall infiltration parameter testing and a testing method. The device comprises a water supply system and an infiltration area, wherein a water supply bottom comprises a water tank and a sealed water tank arranged above the water tank; a gas inlet tube and a water outlet tube are arranged at the bottom of the sealed water tank; both the gas inlet tube and the water outlet tube extend into the water tank; a rain droplet simulation device comprises an iron wire net and a plurality of water dropping holes in the iron wire net; the bottom of the water tank is communicated with the water dropping holes through connecting water tubes. A water supply system for simulating different rainfall intensities is established, and compared with a conventional rainfall simulator, the device is very economic and practical and convenient to operate; in an effective infiltration area, a testing area soil body is isolated from a peripheral soil body by usinga grouting curtain method, water is prevented from lateral flowing in the infiltration process, interference of external environments such as evapotranspiration is also avoided, and meanwhile the timethat moisture is completely discharged from wet soil in a research area under natural conditions can be also acquired.

The invention discloses a test device for simulating karst fissure-pipeline water and solute migration rule, which comprises a rack, wherein the upper part of the rack is provided with a surface karstzone infiltration tank, and the side of the rack is provided with a pressure monitoring device; the top of the surface karst zone infiltration tank is of an open structure and is provided with a rainfall simulator; one side of the bottom of the surface karst zone infiltration tank is connected with a large fracture plate, and the other side of the bottom of the surface karst zone infiltration tank is connected with three small fracture plates; the bottom ends of the small fracture plates are connected with the side of the large fracture plate and are of a V-shaped structure; the large fracture plate and the small fracture plates are internally provided with a large crack and small cracks; a plurality of pressure measuring pipe joints are arranged on the sides of the large fracture plate and the small fracture plates and at the bottom of the surface karst zone infiltration tank, and are communicated with the pressure monitoring device through hoses. The device has the advantages of complete structure, reasonable spatial layout, high similarity with the characteristics of actual water-containing structure, high operability and controllable influence factors, and is suitable for exploring the karst fissure-pipeline water and solute migration rule.

The invention discloses a liftable and portable rainfall simulator suitable for a high-heterogeneity karst slope. The liftable and portable rainfall simulator comprises a combined four-spraying-nozzle rain generator, a water supply system and a lifting type rainfall simulator support. The combined four-spraying-nozzle rain generator and the water supply system are screwed with a second right-angle elbow through loose joint. A DN25 water delivery steel pipe is inserted into a DN32 sleeve, and then a bolt is screwed into a third fixing nut to enable the water supply system and the lifting type rainfall simulator support to be connected. Two ends of a primary three-way main pipe are connected with a secondary three-way branch pipe in a through mode, two ends of a second three-way main pipe are connected with ball valves, and the ball valves are connected with spraying nozzles through right-angle elbows. The liftable and portable rainfall simulator adopts the combined spraying nozzles and is adjustable in height, convenient to carry and simple in manufacture, and the bottleneck of slope infiltration and erosion research carried out in regions with very high heterogeneity similar to karst and the like is overcome.

The invention discloses a test device for simulating acid rain corrosion of an asphalt mixture. The test device comprises a rainfall simulation box and an acid rain water supply device, the top of therainfall simulation box is provided with a rainfall simulator, a water inlet of the rainfall simulator is communicated with a water supply device through a pipeline, and the bottom surface of the rainfall simulation box is provided with a water outlet; and nozzles are arranged in the lower end face of the rainfall simulator and communicated with a water inlet of the rainfall simulator, the bottomface of the rainfall simulation box descends from the periphery to the center, a sample accommodating plate is arranged at the bottom of the rainfall simulation box in the horizontal direction, and agap is formed between the sample accommodating plate and the bottom face of the rainfall simulation box. The rainfall simulator is arranged at the top of the rainfall simulation box, the rainfall simulator is communicated with the acid rain water supply device, the sample accommodating plate is arranged in the rainfall simulation box, and a sample is placed on the sample accommodating plate, so that influence of acid rain conditions on the sample can be simulated, and a basis can be provided for evaluating the acid rain resistance degree of the asphalt mixture and improving the asphalt mixture used in areas with acid rain.

The invention discloses an intelligent simulation earthquake loading test box. The test box comprises an earthquake simulation exciter, an acceleration sensor, a sand cushion layer, a model box support, a moisture sensor, a rainfall simulator, a measurement monitoring system, a manual operation panel, a data acquisition controller, an underground water level simulation controller, a computer and software system, a data storage transmitter, a pore water pressure sensor, an electromagnetic automatic control valve, a vertical load loading system, a power supply and a model box. According to the technical scheme provided by the invention, earthquake load simulation can be realized in a model test in a shock wave form, and the damage effect of an earthquake on the internal structure of the sample is truly reflected. According to the technical scheme provided by the invention, earthquake load effects in two directions can be simulated, namely earthquake simulation loading under a two-dimensional condition is realized, and the earthquake simulation loading is consistent with an action process in an actual earthquake.

The invention relates to a portable test trough applied to field rainfall test and a test method. The portable test trough applied to field rainfall test comprises a plurality of baffles and an end cap, wherein connecting plugs and fixing hole structures are separately arranged at the edges of the baffles and the end cap, stainless steel rods are inserted in fixing holes, thus, the baffles keep stable relatively, the baffles and the end cap also keep stable relatively, and a water outlet is formed in the bottom end of a trough body. The portable test trough applied to field rainfall test has the beneficial effects that test spaces in different sizes are formed in a surrounding manner by increasing and reducing the number of the baffles, therefore, various test regions in different sizes orshapes are formed, the shortcoming of form simplification of a traditional device is overcome, the problem of poor structural stability is further solved, the portable test trough has the advantagesof easiness in mounting, convenience in carrying and the like, and the portable test trough is combined to a rainfall simulator, not only can be used for analyzing influences of factors such as vegetation coverage, rainfall factors and terrain to soil erosion, but also can be used for measuring parameters such as different types of soil runoff coefficients, slope runoff volume, erosion and sediment yield and runoff producing critical rainfall threshold values.

The invention discloses a rainfall device for an artificial rainfall experimental facility. The rainfall device includes an artificial rainfall simulator body, a staggered rainfall unit, and a water storage pool; a hollow jacket is arranged outside the artificial rainfall simulator body; a control panel is fixedly arranged on a front panel of the artificial rainfall simulator body; the staggered rainfall unit is fixedly arranged on the top of the inner part of the artificial rainfall simulator body; and the bottom of the artificial rainfall simulator body is nested on a central position of the water storage pool. Compared with the conventional artificial rainfall simulators, the rainfall device is simple in structure, is small in size, and is easy to use; the rainfall device adopts a staggered rainfall mode; strong wind simulators are nested in the hollow jacket, and gale climate simulation can be performed; and multiple functions of the simulation device can be achieved.

The invention discloses a test device for simulating a karst fissure-pipeline water flow and solute transport law. The test device comprises a rack, wherein the rack is of a fixedly connected square frame structure, a surface karst infiltration box is arranged at the upper part of the rack, pressure monitoring equipment is arranged at the side edge of the rack, the surface karst infiltration box is of a square box structure, the top part of the surface karst infiltration box is of an open structure and is provided with a rainfall simulator, and an axisymmetric irregular slope plate is arrangedat the bottom part of the inner side of the surface karst infiltration box; a preset rock material layer is filled in and covers the top surface of the irregular slope plate; and a plurality of independent cracks and crossed cracks are symmetrically formed in the irregular slope plate. The test device for simulating the karst fissure-pipeline water flow and solute transport law is high in universality, can fully simulate the real structure of each karst fissure-pipeline structure, can carry out a symmetric observation experiment in the experiment process, and facilitates later experiment datacomparison, arrangement and analysis.

The invention discloses a rocker arm upward spraying type rainfall simulator. The rocker arm upward spraying type rainfall simulator comprises a bracket, a main water supplying pipe and a motor, and is characterized in that a shaft hole is formed in the upper end of the bracket and a cross-shaped rocker arm is arranged; the rocker arm is a cross-shaped water through pipe; the upward direction of the cross-shaped water through pipe is connected with a plurality of adjustable spherical spraying nozzles; the rocker arm is provided with a shaft pipe; the shaft pipe movably penetrates in the shaft hole formed in the upper end of the bracket; a motor is in transmission connection with a crank connecting rod mechanism; and a connecting rod of the crank connecting rod mechanism is hinged with the bottom of one end of the rocker arm. The spraying nozzles upwards spray out water columns in a reciprocating motion process so that wild simulated rainfall is realized. The rainfall device has a simple structure and strong operability and is convenient to move; and compared with similar equipment, for the rocker arm upward spraying type rainfall simulator disclosed by the invention, the energy consumption is greatly reduced and the natural randomness of the rainfall can be represented better.

The invention discloses a rainfall device for an artificial rainfall experimental facility. The rainfall device includes an artificial rainfall simulator body, a staggered rainfall unit, and a water storage pool; a hollow jacket is arranged outside the artificial rainfall simulator body; a control panel is fixedly arranged on a front panel of the artificial rainfall simulator body; the staggered rainfall unit is fixedly arranged on the top of the inner part of the artificial rainfall simulator body; and the bottom of the artificial rainfall simulator body is nested on a central position of the water storage pool. Compared with the conventional artificial rainfall simulators, the rainfall device is simple in structure, is small in size, and is easy to use; the rainfall device adopts a staggered rainfall mode; strong wind simulators are nested in the hollow jacket, and gale climate simulation can be performed; and multiple functions of the simulation device can be achieved.

The invention discloses an artificial rainfall simulator. The artificial rainfall simulator comprises a sprayer set, a master controller, a water storage tank, a water return tank, a water supply pump, a water return pump and a first water level controller. When the water level of the water storage tank is lower than a first preset threshold value, tap water is supplied to the water storage tank,and when the water level of the water storage tank is lower than a second preset threshold value, water recycled and stored in the water return tank is supplied to the water storage tank through the water return pump while the tap water is supplied to the water storage tank, so that the height of the water level in the water storage tank is guaranteed, the working pressure in the water storage tank is stabilized, and the influences on performance parameters of raindrops are avoided; and water resources are recycled, and waste is reduced.

The invention relates to a method and a system for field in-situ observation of a slope runoff-matrix flow-preferential flow moisture migration process. The system comprises a rainfall simulator, a slope runoff collecting device, a soil water collecting device, a slope runoff flow collector, a soil water flow collector and a data acquisition processor; wherein the slope runoff water collecting device comprises a slope runoff collecting frame and a slope runoff collecting groove; the soil water collecting device comprises a bottom face, a water baffle arranged on the periphery of the bottom face part and a water collecting opening formed in the water baffle; the pressure sensors are arranged at the bottoms of the slope runoff flow collector and the soil water flow collector and can read the pressure of fluid in the collectors in real time; and the data acquisition processor is connected with pressure sensors in the slope runoff flow collector and the soil water flow collector and is used for acquiring and processing data.

The invention belongs to the technical field of research devices for water and soil conservation, and discloses a device for establishing a water-collecting effect test for urban water permeable surfaces. The device is characterized by mainly comprising a radial flow measuring device, a rainfall infiltration test surface and a rainfall simulator. The radial flow measuring device comprises a collecting groove, a collecting tank, a synchronous micro diving pump, a radial flow tank, an adjustable water control valve and a stop watch part, and adopts a transfer type measuring method to measure radial flow. The rainfall infiltration test surface uses a combined steel plate pile as a side wall to separate out an observation surface; the rainfall simulator comprises a rainfall spray head, an adjustable flat base and a water supply system; and a base bracket can keep horizontal through adjusting three lead screws respectively, so that the device is suitable for various sloping surfaces. The water supply system mainly comprises a water control valve, a water supply tank with primary and secondary structures, a first diving pump and a second diving pump. The secondary tank is positioned in the primary tank. The device has the effects and advantages of little influence on surrounding environment, accuracy and flexibility, little water usage, and low cost.

The invention relates to a device for testing ecological slope protection of ecologic rock and soil mechanics under simulated rainfall condition, which is mainly used for studying scouring (or erosion) characteristics test of rock and soil slope by artificial rainfall and belongs to the field of geotechnical engineering and environmental engineering. The test device comprises an automatic variable slope test rack, a test soil bin and a rainfall simulator with adjustable rain intensity, wherein a rotary support is composed of a guide rail, a crank, a crank brake, an upper shaft and a device for preventing backward sliding; a fixed bearing support is composed of a lower shaft, a bearing seat, a bending guide groove, a capstan and a lower shaft caging device; the rainfall simulator with adjustable rain intensity is disposed on the variable slope test race through a support and includes a rainfall simulator, a pressure sensor, a vibrator, a barometer, a relief valve, etc. The inventive test device has the advantages of simple structure, adjustable rain intensity, uniform rainfall, automatic online collection of air pressure, water pressure and rainfall amount of the rainfall simulatorand reduced time and labor force for loading the test soil bin.

A multi-operating mode frame type portable landslide testing device for a geomechanical model belongs to the field of geological hazard model test. The testing device comprises a frame-beam-type testing bed, a rainfall simulator, a water level regulator and a self-weight horizontal loading mechanism, wherein the frame-beam-type testing bed mainly comprises a cuboid framework, a front panel, a rear panel and a base plate; the rainfall simulator is arranged at the top of the frame-beam-type testing bed and comprises a plurality of spraying pipes and nozzles on the spraying pipes and is used for simulating rainfall in the frame-beam-type testing bed; the water level regulator comprises a left-side trough and a right-side trough respectively formed on the left and the right sides of the frame-beam-type testing bed, and a plurality of drainage holes are respectively formed on the right panel of the left-side trough and the left panel of the right-side trough and used for changing the water levels of water level simulation libraries in the left-side trough and the right-side trough; and the self-weight horizontal loading mechanism is arranged above the right-side trough and used for bearing weights, so as to exert horizontal load to the landslide model in the frame-beam-type testing bed.

The invention discloses a device and a method for measuring rainfall infiltration parameters in situ, including a water supply system and an infiltration area. The water supply bottle includes a water tank and a closed water tank arranged above the water tank. Water pipes, inlet pipes and outlet pipes all extend into the water tank. The raindrop simulation device includes barbed wire and a number of drip outlets installed on the wire mesh. The bottom of the water tank is connected to the drip outlets through connecting water pipes; it constitutes a water supply system that can simulate different rainfall intensities , compared with the existing rainfall simulator, it is very economical and easy to operate; the effective infiltration area adopts the method of grouting curtain to isolate the soil in the test area from the surrounding soil, avoiding the side flow of water during infiltration, It also avoids the interference of the external environment such as evapotranspiration, and can also obtain the time required for the wet soil in the research area to drain water under natural conditions.

The invention belongs to the field of noise measurement technology research, and particularly relates to a method and device for measuring underwater noise generated by artificial rainfall. The methodcomprises the steps of: adjusting the height of an artificial rainfall simulator to control the speed at which the rainfall hits the water surface; opening a nozzle of the artificial rainfall simulator and selecting raindrops with different particle sizes; adjusting the gear of a fan to generate different wind speeds so as to control the incident angle of rainfall; measuring the rainfall capacityby using a rain gauge; measuring noise signals by a hydrophone array in a reverberation tank through a reverberation method; acquiring the noise signals measured by the hydrophone array by utilizingthe data acquisition system; and processing data to obtain underwater noise signals generated by the artificial rainfall. The method and device area capable of strictly controlling the remaining variables, such as environmental noise and wind noise, affecting the rainfall noise in the laboratory, controlling the particle sizes of the artificial rainfall, and measuring the rainfall noise without interferences.

The invention discloses an urban outdoor greenway cold plate tester. The tester comprises a test module which is internally inlaid with matrix layers and a cold plate, the cold plate comprises water inlet and outlet ends to exchange heat, a rainwater collector for collecting surface radial flow rainwater and penetrated radial flow rainwater of the matrix layers is arranged under the test module, adisplacement detection device for detecting the rainwater penetration radial flow of the matrix layers is arranged in the rainwater collection, a rainfall simulator for simulating rainfall is arranged over the test module and connected with a water storage tank, and can adjust the intensity and amount of rainfall, and temperature detectors for detecting the temperature are arranged in the matrixlayers, and the water inlet and outlet ends of the cold plate respectively. The tester can simplify test for the water storing and draining performance of the practical outdoor greenway, the test module realizes an equivalent greenway structure, and prediction and data reference is provided for practical engineering.

The invention discloses a rainfall erosion process observation device, and relates to the technical field of water and soil conservation research, the rainfall erosion process observation device comprises a test shed, a rainfall simulator, a test tank, a splash erosion collector and a runoff sediment collector, the test tank is used for containing an experimental soil body, the rainfall simulator is installed on the test shed and is located right above the test tank, and the splash erosion collector is located right above the test tank. The test tank is located at the upper end of the test tank and used for simulating rainfall erosion of a soil body in the test tank, the splash erosion collector is located on the periphery of the upper end of the test tank and used for collecting splash erosion soil particles, the runoff sediment collector is located on one side of the test tank, and the upper end of the runoff sediment collector is communicated with the upper end of the test tank and used for collecting a runoff sediment sample. According to the observation device for the rainfall erosion process, the raindrop splash erosion amount and the runoff migration amount of soil particles in the rainfall erosion process can be observed, and the authenticity of a research result is improved.