CN115372229B - Water flow testing device that perpendicular infiltration side flows out - Google Patents
Water flow testing device that perpendicular infiltration side flows out Download PDFInfo
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- CN115372229B CN115372229B CN202211142365.9A CN202211142365A CN115372229B CN 115372229 B CN115372229 B CN 115372229B CN 202211142365 A CN202211142365 A CN 202211142365A CN 115372229 B CN115372229 B CN 115372229B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 162
- 238000012360 testing method Methods 0.000 title claims abstract description 82
- 230000008595 infiltration Effects 0.000 title description 2
- 238000001764 infiltration Methods 0.000 title description 2
- 239000000463 material Substances 0.000 claims abstract description 56
- 239000002131 composite material Substances 0.000 claims abstract description 40
- 238000004140 cleaning Methods 0.000 claims description 101
- 238000009434 installation Methods 0.000 claims description 21
- 238000009825 accumulation Methods 0.000 claims description 15
- 239000012466 permeate Substances 0.000 claims description 11
- 239000002352 surface water Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 2
- 230000035515 penetration Effects 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 description 19
- 239000007788 liquid Substances 0.000 description 12
- 238000013461 design Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention provides a device for testing the flow of water flowing out from a vertical permeation side surface, which comprises a device water tank, wherein a testing cavity and side surface water outlet cavities which are symmetrically arranged relative to the testing cavity are arranged in the device water tank, a composite drainage material is placed at the bottom of the testing cavity, two side surfaces of the composite drainage material are communicated with the side surface water outlet cavities, and a constant water level adjusting assembly and a pressure applying assembly are arranged in the testing cavity. The invention can solve the technical problems that the composite drainage material needs to be subjected to water flow test before leaving a factory, the composite drainage material test only comprises a plane water flow test and an earth covering water flow test at present, a vertical penetration water flow test under constant head pressure difference is lacked, and the drainage effect of the composite drainage plate cannot be completely proved.
Description
Technical Field
The invention relates to the technical field of composite drainage material testing, in particular to a water flow testing device flowing out of a vertical permeation side face.
Background
In the traffic infrastructure of railways, highways and the like, the safety and the service life of the engineering have a close and indistinguishable relationship with a drainage system per se, wherein the composite drainage material is an important component in the drainage system, and is processed by a special extrusion molding process by taking high-density polyethylene (HDPE) and geotextile as raw materials, so that the composite drainage material can keep high drainage performance even under high load;
the composite drainage material is subjected to water flow test before leaving a factory, the test of the composite drainage material only comprises a plane water flow test and a covering soil water flow test at present, a vertical penetration water flow test under constant head pressure difference is lacked, and the drainage effect of the composite drainage plate cannot be completely proved.
Disclosure of Invention
The invention provides a device for testing the water flow flowing out from the vertical permeation side surface, which is used for solving the technical problems in the background technology.
In order to solve the technical problem, the invention discloses a device for testing the flow of water flowing out from a vertical permeation side surface, which comprises a device water tank, wherein a testing cavity and side surface water outlet cavities symmetrically arranged about the testing cavity are arranged in the device water tank, a composite drainage material is placed at the bottom of the testing cavity, two side surfaces of the composite drainage material are communicated with the side surface water outlet cavities, and a constant water level adjusting assembly and a pressure applying assembly are arranged in the testing cavity.
Preferably, a water inlet is formed in the device water tank, the water inlet is communicated with the test cavity, and a water outlet is formed in the side water outlet cavity.
Preferably, the constant water level regulating assembly is a water level differential pressure regulator, and the water level differential pressure regulator is used for controlling the height of the water level in the test chamber.
Preferably, the pressure applying assembly comprises:
the connecting bracket is connected in a sliding cavity of the device water tank in a sliding manner, and a filter screen is arranged in the sliding cavity;
the two pressing plates are symmetrically arranged and connected to the working end of the connecting bracket;
and the normal force servo automatic control system is arranged on the connecting bracket and is used for driving the connecting bracket to slide up and down along the sliding cavity.
Preferably, the working end of the connecting support is fixedly connected with an installation frame, the installation frame is connected with a driving rack in an up-and-down sliding manner, a first driving piece is arranged on the driving rack, and the first driving piece is used for driving the driving rack to slide along the connecting support;
the middle gears are symmetrically arranged and are rotationally connected to the mounting rack, and the middle gears are meshed with the driving racks;
the fan-shaped teeth are rotationally connected to the mounting rack and are meshed with one side, away from the driving rack, of the intermediate gear;
the clamping rods are symmetrically arranged and are coaxially and rotatably connected to the mounting rack with the sector teeth.
Preferably, the clamp plate includes clamping piece, fixed pressing plate and extension clamp plate, clamping piece fixed connection is on fixed pressing plate, the clamping piece be used for with the clamping member mutually supports, the fixed pressing plate internal rotation is connected with the extension lead screw, extend clamp plate threaded connection be in on the extension lead screw, be equipped with the second driving piece on the extension lead screw, the second driving piece is used for the drive the extension lead screw rotates.
Preferably, the bottom of the water tank of the device is provided with an electric lifting universal wheel and an electric lifting base.
Preferably, an auxiliary assembly is arranged in the water tank of the device, and the auxiliary assembly comprises a flow guide assembly;
the flow guide assembly comprises:
the guide screw is rotationally connected in a water accumulation cavity of the device water tank, a screw driving motor is arranged on the guide screw, a scraper blade is connected on the guide screw in a threaded manner, and the water accumulation cavity is communicated with the sliding cavity;
the water outlet channel is arranged in the device water tank and communicated with the water accumulation cavity;
the baffle is connected to the guide screw in a sliding mode, the baffle is connected with the scraper through an elastic piece, one end, away from the guide screw, of the baffle is attached to the inner wall of the water outlet channel, and a first elastic piece is fixedly connected between the baffle and the inner wall of the water accumulation cavity;
the gate plate is connected in the water outlet channel in a sliding mode, and one end, far away from the water outlet channel, of the gate plate is located in the driving part installation cavity;
the guide cylinder is fixedly connected in the driving part mounting cavity, and the flashboard is connected in the guide cylinder in a sliding manner;
the drive pivot, the drive pivot rotates to be connected in the drive unit installation intracavity, be equipped with the third driving piece in the drive pivot, the third driving piece is used for the drive pivot rotates, key connection has drive gear in the drive pivot, drive gear with flashboard intermeshing.
Preferably, the auxiliary assembly comprises a cleaning assembly comprising:
the cleaning lead screw is rotatably connected in the driving part mounting cavity;
the cleaning device comprises a first bevel gear and a second bevel gear, wherein the first bevel gear is connected to the driving rotating shaft in a sliding key manner, a fourth driving part is arranged on the first bevel gear and used for driving the first bevel gear to slide along the driving rotating shaft, the second bevel gear is connected to the cleaning screw in a key manner, and the first bevel gear is used for being meshed with the second bevel gear;
the two guide seats are symmetrically arranged and fixedly connected in the device water tank;
the cleaning assembly shell is in threaded connection with the cleaning screw rod, and a cleaning assembly main body is arranged in the cleaning assembly shell;
the cleaning assembly body includes:
the support is fixedly connected in the cleaning component shell, an electric telescopic piece is fixedly connected to the support, and an extension rod of the cleaning component is connected to the electric telescopic piece in a sliding manner from top to bottom;
the electric telescopic cleaning head is rotationally connected to the cleaning component extension rod, the electric telescopic cleaning head is coaxially rotationally connected with a working state adjusting gear, a fifth driving piece is arranged on the working state adjusting gear and used for driving the working state adjusting gear to rotate, and a limit stop block is arranged at one end, close to the electric telescopic cleaning head, of the cleaning component extension rod;
the lifting wedge-shaped block is fixedly connected to the cleaning component extension rod and used for being matched with a slope in the cleaning component shell;
the locking assembly comprises a locking block, the locking block is connected to the cleaning assembly extension rod in a sliding mode through a second elastic piece, a locking hole is formed in the support, and the locking hole is used for being matched with the locking block;
the material placing plate is fixedly connected in the testing cavity, a matching cover plate is arranged on the material placing plate, and the material placing plate is matched with the matching cover plate in shape.
Preferably, the method further comprises the following steps: a drain assembly, the drain assembly comprising:
the drainage dislocation block is arranged on a material placing plate in the water tank of the device;
the drainage channel is fixedly connected to the material placing plate and is positioned right below the drainage dislocation block;
the first connecting elastic piece is fixedly connected between the drainage dislocation block and the inner wall of the drainage channel;
the two fixed mounting plates are symmetrically arranged and fixedly connected in the drainage channel;
the drainage channel is characterized by comprising two sliding installation plates which are symmetrically arranged, wherein driving wedge blocks are fixedly connected to the sliding installation plates, the driving wedge blocks are vertically and slidably connected to wedge block guide rods of the drainage channel, sliding driving pieces are arranged on the driving wedge blocks, and the sliding driving pieces are used for driving the driving wedge blocks to slide along the wedge block guide rods;
the two semicircular push plates are symmetrically arranged and rotatably connected to one end, far away from the inner wall of the drainage channel, of the fixed mounting plate;
the first cross connecting rod and the second cross connecting rod are in cross hinge connection with each other, one end of the first cross connecting rod is in hinge connection with the semicircular push plate, the other end of the first cross connecting rod is in sliding connection with the sliding mounting plate, one end of the second cross connecting rod is in hinge connection with the sliding mounting plate, and the other end of the second cross connecting rod is in sliding connection with the fixed mounting plate;
the two channel baffles are symmetrically arranged, the channel baffles are hinged to the inner wall of the drainage channel, and the two channel baffles are connected through a second connecting elastic piece;
two symmetrical arrangement's cooperation wedge, cooperation wedge sliding connection be in on the drainage channel, the cooperation wedge be used for with the drive wedge is mutually supported, it is connected with the connection gyro wheel to rotate on the cooperation wedge, fixedly connected with acts as go-between on the connection gyro wheel, it is connected with middle gyro wheel to rotate on the drainage channel outer wall, it keeps away from to act as go-between run through behind the middle gyro wheel to connect the one end of gyro wheel drainage channel to fixed connection is in on the passageway baffle.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the structure of a water tank of the device of the present invention.
FIG. 2 is a top view of the water tank of the present invention.
FIG. 3 is a schematic view of the structure of the pressing plate of the present invention.
FIG. 4 is a schematic view of the auxiliary assembly of the present invention.
FIG. 5 is a schematic view of a cleaning assembly of the present invention.
FIG. 6 is an enlarged view of a portion of FIG. 4 according to the present invention.
In the figure: 1. a device water tank; 100. a test chamber; 101. a side water outlet cavity; 102. a constant water level adjusting assembly; 103. a pressure applying assembly; 1030. connecting a bracket; 1031. a slide chamber; 1032. pressing a plate; 1033. a normal force servo automatic control system; 1034. a mounting frame; 1035. a drive rack; 1036. an intermediate gear; 1037. sector-shaped teeth; 1038. clamping the rod piece; 1039. installing a clamping block; 104. fixing the pressing plate; 1040. an extension platen; 1041. an extension lead screw; 105. a water outlet; 106. an electric lifting universal wheel; 107. an electric lifting base; 108. a water inlet; 2. a composite drainage material; 3. an auxiliary component; 300. a flow guide assembly; 3000. a guide screw; 3001. a water accumulation cavity; 3002. a squeegee; 3003. a water outlet channel; 3004. a baffle plate; 3005. a first elastic member; 3006. a shutter plate; 3007. a drive member mounting cavity; 3008. a guide cylinder; 3009. driving the rotating shaft; 301. a cleaning assembly; 3010. cleaning the lead screw; 3011. a first bevel gear; 3012. a second bevel gear; 3013. a guide seat; 3014. a cleaning assembly housing; 3015. a cleaning assembly main body; 3016. a support; 3017. an electric telescopic member; 3018. a cleaning assembly extension bar; 3019. an electrically retractable cleaning head; 302. a drive gear; 3020. a working state adjusting gear; 3021. a limit stop block; 3022. a material placement plate; 3023. matching the cover plate; 3024. lifting wedge blocks; 3025. a slope; 3026. a locking assembly; 3027. a locking block; 3028. a second elastic member; 3029. a locking hole; 4. a drainage assembly; 400. a water drainage dislocation block; 4000. a drainage channel; 4001. a first connecting elastic member; 4002. fixedly mounting a plate; 4003. slidably mounting a plate; 4004. driving the wedge block; 4005. a wedge guide; 4006. a semicircular push plate; 4007. a first cross-link; 4008. a second cross link; 4009. a channel baffle; 401. a second connecting elastic member; 4010. matching the wedge-shaped block; 4011. connecting a roller; 4012. a pull wire; 4013. a middle roller; 5. the lead screw drives the motor.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions and technical features between various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not be within the protection scope of the present invention.
The present invention provides the following examples:
example 1
The embodiment of the invention provides a device for testing water flow flowing out from a vertical permeation side surface, which comprises a device water tank 1, wherein a testing cavity 100 and a side surface water outlet cavity 101 symmetrically arranged relative to the testing cavity 100 are arranged in the device water tank 1, a composite drainage material 2 is placed at the bottom of the testing cavity 100, two side surfaces of the composite drainage material 2 are communicated with the side surface water outlet cavity 101, and a constant water level adjusting component 102 and a pressure applying component 103 are arranged in the testing cavity 100.
The constant water level adjusting assembly 102 is used for adjusting the water level in the testing cavity 100 so as to control the water head difference, and the adjustment of the water level is used for simulating the water accumulation of the roadbed;
and the pressure applying component 103 is used for applying pressure to the composite drainage material 2 and ensuring that the composite drainage material 2 is tightly attached to the bottom of the test cavity 100, so that water in the composite drainage material 2 can only seep out from the side surface of the composite drainage material 2, and the pressure of objects and a cart on a road surface to a roadbed is simulated.
The working principle and the beneficial effects of the technical scheme are as follows: when the water flow testing device is used, the composite drainage material 2 is placed at the bottom of the testing cavity 100, then the pressure applying component 103 applies pressure to the composite drainage material 2 to enable the bottom surface of the composite drainage material 2 to be tightly attached to the bottom of the testing cavity 100, the pressure applied to the composite drainage material 2 by the pressure applying component 103 is adjusted to be preset pressure required by testing while ensuring that the bottom surface of the composite drainage material 2 is tightly attached to the bottom of the testing cavity 100, then water with a certain height is added into the testing cavity 100, then the water level in the testing cavity 100 is adjusted to be preset water level required by testing by the constant water level adjusting component 102, a water receiving barrel is placed at the bottoms of the water outlet cavities 101 on two side surfaces, and then when the meter is clamped, for 30 minutes if timing, the water above the composite drainage material 2 in the testing cavity 100 can gradually and vertically permeate into the composite drainage material 2 within 30 minutes, because the two side surfaces of the composite drainage material 2 are communicated with the side surface water outlet cavity 101, water permeating into the composite drainage material 2 can seep out through the two side surfaces of the composite drainage material 2 and flow into the side surface water outlet cavity 101, then the water in the side surface water outlet cavity 101 flows into the water receiving barrels, and the vertical permeation side surface outflow water flow of the composite drainage material 2 is obtained by counting the water amount in the two water receiving barrels within 30 minutes, so that the test is completed.
Example 2
On the basis of the embodiment 1, a water inlet 108 is arranged on the device water tank 1, the water inlet 108 is communicated with the test chamber 100, and a water outlet 105 is arranged on the side water outlet chamber 101;
the constant water level regulating component 102 is a water level differential pressure regulator for controlling the height of the water level in the testing chamber 100;
the pressure applying assembly 103 includes:
the connecting bracket 1030, the connecting bracket 1030 is connected in a sliding chamber 1031 of the device water tank 1 in a sliding way, and a filter screen 1042 is arranged in the sliding chamber 1031;
two symmetrically arranged press plates 1032, said press plates 1032 being connected to the working ends of said connecting brackets 1030;
a normal force servo automatic control system 1033, said normal force servo automatic control system 1033 being disposed on said connecting bracket 1030, said normal force servo automatic control system 1033 being configured to drive said connecting bracket 1030 to slide up and down along said sliding chamber 1031;
a mounting frame 1034 is fixedly connected to the working end of the connecting bracket 1030, a driving rack 1035 is connected to the mounting frame 1034 in an up-and-down sliding manner, a first driving member is arranged on the driving rack 1035, and the first driving member is used for driving the driving rack 1035 to slide along the connecting bracket 1030;
two symmetrically arranged intermediate gears 1036, wherein the intermediate gears 1036 are rotatably connected to the mounting rack 1034, and the intermediate gears 1036 are engaged with the driving racks 1035;
two symmetrically arranged sector-shaped teeth 1037, the sector-shaped teeth 1037 are rotatably connected to the mounting bracket 1034, and the sector-shaped teeth 1037 are engaged with one side of the intermediate gear 1036 away from the driving rack 1035;
the clamping bar members 1038 are symmetrically arranged, and the clamping bar members 1038 and the sector-shaped teeth 1037 are coaxially and rotatably connected to the mounting frame 1034;
the pressing plate 1032 comprises a clamping block 1039, a fixed pressing plate 104 and an extension pressing plate 1040, the clamping block 1039 is fixedly connected to the fixed pressing plate 104, the clamping block 1039 is used for being matched with the clamping bar 1038, an extension lead screw 1041 is rotatably connected to the fixed pressing plate 104, the extension pressing plate 1040 is in threaded connection with the extension lead screw 1041, a second driving piece is arranged on the extension lead screw 1041, and the second driving piece is used for driving the extension lead screw 1041 to rotate;
the bottom of the water tank 1 of the device is provided with an electric lifting universal wheel 106 and an electric lifting base 107.
The working principle and the beneficial effects of the technical scheme are as follows: the water inlet 108 is used for adding water into the test cavity 100, and the water outlet 105 is used for discharging water in the side water outlet cavity 101;
when the pressure applying component 103 works, the normal force servo automatic control system 1033 drives the connecting bracket 1030 and the pressure plate 1032 to slowly rise and fall through the servo motor, and when the normal force servo automatic control system falls to a certain degree, the normal force servo automatic control system is stabilized at a certain position through a set pressure value and keeps constant;
when the pressure application assembly 103 is installed, the pressing plate 1032 is placed at the position shown in fig. 3, then the first driving member drives the driving rack 1035 to slide along the connecting bracket 1030, the driving rack 1035 drives the intermediate gear 1036 to rotate, the intermediate gear 1036 drives the sector-shaped teeth 1037 to rotate, the sector-shaped teeth 1037 drives the clamping bar 1038 to rotate, and the clamping bar 1038 rotates to enable the clamping bar 1038 and the clamping block 1039 to be matched with each other, as shown in fig. 3, when the size of the composite drainage material 2 is small, the second driving member drives the extension screw 1041 to rotate, the extension screw 1041 rotates to drive the extension pressing plate 1040 to move outwards relative to the fixed pressing plate 104, so as to meet the use requirements of the composite drainage materials 2 with different sizes, and meanwhile, the pressing plate 1032 is detachably connected, and different pressing plates 1032 can be replaced according to different test requirements;
the design of electric lift universal wheel 106 has made things convenient for the removal to device water tank 1, and when testing arrangement was testing, electric lift base 107 extends downwards to with ground contact to guarantee the device stability of device water tank 1 in the test procedure.
Example 3
On the basis of the embodiment 1 or 2, an auxiliary component 3 is arranged in the water tank 1 of the device, and the auxiliary component 3 comprises a flow guide component 300;
the flow guide assembly 300 includes:
the guide screw 3000 is rotatably connected in a water accumulation cavity 3001 of the device water tank 1, a screw driving motor 5 is arranged on the guide screw 3000, a scraper 3002 is in threaded connection with the guide screw 3000, and the water accumulation cavity 3001 is communicated with a slide chamber 1031;
a water outlet channel 3003, wherein the water outlet channel 3003 is arranged in the device water tank 1 and is communicated with the water accumulation cavity 3001;
the baffle 3004 is slidably connected to the diversion screw 3000, one end of the baffle 3004, which is far away from the diversion screw 3000, is attached to the inner wall of the water outlet channel 3003, and a first elastic piece 3005 is fixedly connected between the baffle 3004 and the inner wall of the water accumulation cavity 3001;
the gate 3006 is slidably connected in the water outlet channel 3003, and one end of the gate 3006, which is far away from the water outlet channel 3003, is located in the driving part mounting cavity 3007;
the guide cylinder 3008 is fixedly connected in the driving part mounting cavity 3007, and the shutter 3006 is slidably connected in the guide cylinder 3008;
the driving rotating shaft 3009 is rotatably connected in the driving component mounting cavity 3007, a third driving member is arranged on the driving rotating shaft 3009, the third driving member is used for driving the driving rotating shaft 3009 to rotate, a driving gear 302 is connected to the driving rotating shaft 3009 in a key manner, and the driving gear 302 is meshed with the shutter 3006;
the auxiliary assembly 3 comprises a cleaning assembly 301, the cleaning assembly 301 comprising:
the cleaning lead screw 3010 is rotatably connected in the driving part mounting cavity 3007;
the cleaning device comprises a first bevel gear 3011 and a second bevel gear 3012, the first bevel gear 3011 is connected to the driving rotating shaft 3009 in a sliding manner, the first bevel gear 3011 is provided with a fourth driving part, the fourth driving part is used for driving the first bevel gear 3011 to slide along the driving rotating shaft 3009, the second bevel gear 3012 is connected to the cleaning screw 3010 in a key manner, and the first bevel gear 3011 is used for being meshed with the second bevel gear 3012;
the two guide seats 3013 are symmetrically arranged, and the guide seats 3013 are fixedly connected in the device water tank 1;
a cleaning assembly housing 3014, the cleaning assembly housing 3014 is screwed on the cleaning lead screw 3010, and a cleaning assembly main body 3015 is arranged in the cleaning assembly housing 3014;
the cleaning assembly body 3015 includes:
the support 3016 is fixedly connected in the cleaning component housing 3014, the support 3016 is fixedly connected with an electric telescopic component 3017, and the electric telescopic component 3017 is connected with a cleaning component extension rod 3018 in a vertical sliding manner;
the cleaning head 3019 is an electric telescopic cleaning head 3019, the electric telescopic cleaning head 3019 is rotationally connected to the cleaning assembly extension rod 3018, the electric telescopic cleaning head 3019 is coaxially rotationally connected to an operating state adjusting gear 3020, a fifth driving member is arranged on the operating state adjusting gear 3020 and used for driving the operating state adjusting gear 3020 to rotate, and a limit stop 3021 is arranged at one end, close to the electric telescopic cleaning head 3019, of the cleaning assembly extension rod 3018;
an elevating wedge block 3024, the elevating wedge block 3024 being fixedly attached to the cleaning assembly extension bar 3018, the elevating wedge block 3024 being configured to cooperate with a ramp 3025 in the cleaning assembly housing 3014;
a locking assembly 3026, wherein the locking assembly 3026 comprises a locking block 3027, the locking block 3027 is slidably connected to the cleaning assembly extension bar 3018 through a second elastic member 3028, the support 3016 is provided with a locking hole 3029, and the locking hole 3029 is used for being matched with the locking block 3027;
a material placing plate 3022, the material placing plate 3022 is fixedly connected in the test chamber 100, a matching cover 3023 is arranged on the material placing plate 3022, and the material placing plate 3022 and the matching cover 3023 are mutually matched in shape.
The working principle and the beneficial effects of the technical scheme are as follows: the water above the composite drainage material 2 in the test cavity 100 can gradually and vertically permeate into the composite drainage material 2, because two side surfaces of the composite drainage material 2 are communicated with the side water outlet cavity 101, the water permeating into the composite drainage material 2 can permeate into the sliding cavity 1031 through two side surfaces of the composite drainage material 2, then flows into the water accumulation cavity 3001 after being filtered by the filter screen 1042 and is collected, after the preset time is over, the screw driving motor 5 drives the diversion screw 3000 to rotate, the diversion screw 3000 rotates to drive the scraper 3002 to move towards the baffle 3004 along the diversion screw 3000, because the scraper 3002 is connected with the baffle 3004 through the elastic piece, when the scraper 3002 moves towards the baffle 3004, the baffle 3004 is driven to move towards the direction far away from the scraper 3002, at the moment, the first elastic piece 3005 is compressed, meanwhile, a gap is generated between the baffle 3004 and the water outlet channel 3003, the water in the water accumulation cavity 3001 flows into the water outlet channel 3003 through the gap under the action of the scraper 3002, the design of the scraper 3002 ensures that all water in the test cavity 3001 is drained, the water outlet channel is accurately driven by the driving device, and the driving device drives the rotating shaft to rotate to drive the rotating shaft 302 to rotate towards the rotating shaft 3003, and drive the rotating shaft to rotate to drive the rotating shaft to rotate 302;
when the test cavity 100 needs cleaning due to long-term use, water in the test cavity 100 is drained, then the matching cover plate 3023 is manually taken out of the material placing plate 3022, then the fourth driving member drives the first bevel gear 3011 to slide along the driving rotating shaft 3009, so that the first bevel gear 3011 and the second bevel gear 3012 are engaged with each other, then the third driving member drives the driving rotating shaft 3009 to rotate, the driving rotating shaft 3009 rotates to drive the first bevel gear 3011 to rotate, the first bevel gear 3011 rotates to drive the second bevel gear 3012 to rotate, the second bevel gear 3012 rotates to drive the cleaning lead screw 3010 to rotate, the cleaning lead screw 3010 rotates to drive the cleaning assembly housing 3014 to move to a proper position along the cleaning assembly housing 3014, then the electric telescopic member 3017 extends to drive the cleaning assembly extension rod 3018 to move, so that the locking block 3027 is disengaged from the locking hole 3029, the cleaning assembly extension rod 3018 moves to drive the lifting wedge 3024 to move upward along the slope 3025, the cleaning assembly extension rod 3018 extends out under the combined action of the lifting wedge 3024 and the slope 3025, when the cleaning assembly 3018 is adjusted to a cleaning head working state, the cleaning head is adjusted to clean, after the cleaning head is finished, the cleaning assembly 100, the cleaning head is cleaned, and the cleaning head is adjusted by the cleaning head is cleaned by the cleaning head, and the cleaning assembly, and the cleaning head is adjusted by the cleaning head, and the cleaning head is adjusted by the cleaning head, and the cleaning assembly 3010;
the design of the cleaning assembly 301 solves the technical problem of difficulty in cleaning the test chamber 100 manually because the deeper and larger arms of the test chamber 100 extend into the test chamber 100.
Example 4
On the basis of the embodiment 1, the method further comprises the following steps: a drain assembly 4, the drain assembly 4 comprising:
a drain dislocation block 400, the drain dislocation block 400 being mounted on a material placement plate 3022 inside the apparatus water tank 1;
the drainage channel 4000 is fixedly connected to the material placing plate 3022 and is positioned right below the drainage dislocation block 400;
a first connecting elastic member 4001, wherein the first connecting elastic member 4001 is fixedly connected between the drainage dislocation block 400 and the inner wall of the drainage channel 4000;
two symmetrically arranged fixed mounting plates 4002, wherein the fixed mounting plates 4002 are fixedly connected in the drainage channel 4000;
the drainage channel 4000 comprises two symmetrically arranged sliding mounting plates 4003, wherein the sliding mounting plates 4003 are fixedly connected with driving wedge blocks 4004, the driving wedge blocks 4004 are vertically and slidably connected to wedge block guide rods 4005 of the drainage channel 4000, and sliding driving pieces are arranged on the driving wedge blocks 4004 and used for driving the driving wedge blocks 4004 to slide along the wedge block guide rods 4005;
the water drainage channel 4000 comprises two symmetrically arranged semicircular push plates 4006, wherein the semicircular push plates 4006 are rotatably connected to one end, far away from the inner wall of the water drainage channel 4000, of the fixed mounting plate 4002;
a first cross connecting rod 4007 and a second cross connecting rod 4008, wherein the first cross connecting rod 4007 and the second cross connecting rod 4008 are in cross hinge connection with each other, one end of the first cross connecting rod 4007 is in hinge connection with the semi-circular push plate 4006, the other end of the first cross connecting rod 4007 is in sliding connection with the sliding installation plate 4003, one end of the second cross connecting rod 4008 is in hinge connection with the sliding installation plate 4003, and the other end of the second cross connecting rod 4008 is in sliding connection with the fixed installation plate 4002;
two symmetrically arranged channel baffles 4009, wherein the channel baffles 4009 are hinged to the inner wall of the drainage channel 4000, and the two channel baffles 4009 are connected through a second connecting elastic piece 401;
two symmetrical arrangement's cooperation wedge 4010, cooperation wedge 4010 sliding connection be in on the drainage channel 4000, cooperation wedge 4010 be used for with drive wedge 4004 is mutually supported, it is connected with connection gyro wheel 4011 to rotate on the cooperation wedge 4010, fixedly connected with is acted as go-between 4012 on the connection gyro wheel 4011, it is connected with middle gyro wheel 4013 to rotate on the drainage channel 4000 outer wall, act as go-between 4012 keeps away from run through behind middle gyro wheel 4013 is striden to the one end of connecting gyro wheel 4011 drainage channel 4000 to fixed connection is in on the passageway baffle 4009.
The working principle and the beneficial effects of the technical scheme are as follows: when water in the test cavity 100 is drained, the sliding driving piece drives the driving wedge block 4004 to slide along the wedge block guide rod 4005, so as to drive the sliding installation plate 4003 to move downwards, the sliding installation plate 4003 moves downwards to drive one end of the first cross connecting rod 4007, which is in sliding connection with the sliding installation plate 4003, and one end of the second cross connecting rod 4008, which is in sliding connection with the fixed installation plate 4002, to slide towards the axial direction of the drainage channel 4000, the first cross connecting rod 4007 moves to drive the semicircular push plate 4006 to rotate, the semicircular push plate 4006 rotates to push the drainage dislocation block 400 upwards to move, so that a gap is generated between the drainage dislocation block 400 and the material placing plate 3022, and the water in the test cavity 100 flows into the drainage channel 4000 through the gap;
simultaneously, drive wedge 4004 follows wedge guide arm 4005 glides downwards, drives cooperation wedge 4010 and moves to the direction of keeping away from drainage channel 4000 axis to make connection gyro wheel 4011 pulling 4012 of acting as go-between, thereby drive two passageway baffles 4009 rotation mutually in opposite directions, passageway baffle 4009 rotates mutually in opposite directions makes drainage channel 4000 switched on, water is through drainage channel 4000 discharge test device, the leakproofness of test device has been guaranteed in the simultaneous design of drainage dislocation piece 400 and passageway baffle 4009, automatic drainage is adopted in drainage assembly 4's design simultaneously, operating personnel's work burden has been alleviateed, testing device's intelligent has been increased.
Example 5
On the basis of embodiment 2, the method further comprises the following steps: a filter screen blockage alarm system, which is used for monitoring the service condition of the filter screen 1042 and giving an alarm when the filter screen 1042 is blocked:
the filter screen blockage alarm system comprises:
a first flow sensor disposed above the sieve 1042 for detecting a flow rate of liquid above the sieve 1042;
a second flow sensor disposed in the slide chamber 1031 below the screen 1042 for detecting a flow rate of liquid in the slide chamber 1031 below the screen 1042;
a timer, which is disposed on the filter screen 1042 and is used for detecting the total usage time of the filter screen 1042 after the last cleaning;
the controller, the alarm, the controller with first flow rate sensor the second flow rate sensor the timer with the alarm electricity is connected, the controller is based on first flow rate sensor the second flow rate sensor with the timer control the alarm is reported to the police, includes following step:
the method comprises the following steps: based on the first flow rate sensor, the second flow rate sensor, the timer, and equation (1), the actual clogging factor of filter screen 1042 is calculated:
wherein the content of the first and second substances,
is the actual blocking factor of filter screen 1042, <' > is>
A preset flow coefficient of the filter screen 1042, which takes a value of 1.23-2.78, based on the number of leaves in the interior of the filter screen>
Is detected by the first flow rate sensor and is->
Is the detection value of the second flow rate sensor, < > is>
Is acceleration of gravity, </or>
Is the aperture of the filter screen 1042->
Is logarithmic with a base of 10->
Is the coefficient of friction of the inner wall of the slide chamber 1031->
Is the Reynolds number of the liquid>
For the preset passing flow of the filter screen 1042>
Is the flow coefficient of filter screen 1042 hole>
Is the total number of holes on the filter screen 1042>
A circumferential ratio of 3.14, based on the measured value>
Is logarithmic based on e>
For influencing the blockage of the filter screen 1042 for the service time, the>
Is a detection value of the timer>
For a preset cleaning time interval of the filter screen 1042, <' >>
Is the thickness of the filter screen 1042->
Is the actual liquid density of the liquid in the slide chamber 1031>
Use the baseline density of the liquid for the water flow test;
step two: the controller compares the actual blocking coefficient of the filter screen 1042 with the preset blocking coefficient of the filter screen 1042, and if the actual blocking coefficient of the filter screen 1042 is larger than the preset blocking coefficient of the filter screen 1042, the alarm gives an alarm.
The working principle and the beneficial effects of the technical scheme are as follows: flow velocity difference of liquid on both sides of the filter screen 1042
The larger the liquid is, the larger the actual blockage factor of the filter screen 1042 is, and the Reynolds number of the liquid is->
The smaller, i.e. the more viscous the liquid is, the actual liquid density +of the liquid in the slide chamber 1031>
The larger, the larger the actual clogging factor of filter screen 1042,
in order to ensure the effective aperture of the filter screen 1042 after the use time t, the longer the use time t is, the smaller the effective aperture of the filter screen 1042 is, the larger the actual blockage coefficient of the filter screen 1042 is, and the design of the filter screen blockage alarm system ensures that the filter screen 1042 is timely cleaned, thereby ensuring the detection accuracy of the test device.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A water flow testing device flowing out from a vertical permeation side is characterized by comprising a device water tank (1), wherein a testing cavity (100) and side water outlet cavities (101) symmetrically arranged relative to the testing cavity (100) are arranged in the device water tank (1), a composite drainage material (2) is placed at the bottom of the testing cavity (100), two side faces of the composite drainage material (2) are communicated with the side water outlet cavities (101), and a constant water level adjusting assembly (102) and a pressure applying assembly (103) are arranged in the testing cavity (100);
the pressure applying assembly (103) comprises:
the connecting bracket (1030), the connecting bracket (1030) is connected in a sliding chamber (1031) of the device water tank (1) in a sliding mode, and a filter screen (1042) is arranged in the sliding chamber (1031);
two symmetrically arranged press plates (1032), the press plates (1032) being connected to the working end of the connecting bracket (1030);
a normal force servo automatic control system (1033), wherein the normal force servo automatic control system (1033) is arranged on the connecting bracket (1030), and the normal force servo automatic control system (1033) is used for driving the connecting bracket (1030) to slide up and down along the sliding chamber (1031).
2. A device for testing the flow of water from a vertical permeate side outlet according to claim 1, wherein the device water tank (1) is provided with a water inlet (108), said water inlet (108) is connected to the test chamber (100), and said side outlet chamber (101) is provided with a water outlet (105).
3. A vertical permeate side flow water flow test apparatus as in claim 1 wherein the constant level adjustment assembly (102) is a differential level regulator for controlling the level of water in the test chamber (100).
4. A vertical permeate side flow water flow test apparatus as in claim 1,
the mounting frame (1034) is fixedly connected with the working end of the connecting support (1030), a driving rack (1035) is connected to the mounting frame (1034) in an up-and-down sliding manner, a first driving piece is arranged on the driving rack (1035), and the first driving piece is used for driving the driving rack (1035) to slide along the connecting support (1030);
two symmetrically arranged intermediate gears (1036), said intermediate gears (1036) being rotatably connected to said mounting bracket (1034), said intermediate gears (1036) being intermeshed with said drive rack (1035);
two symmetrically arranged sector-shaped teeth (1037), wherein the sector-shaped teeth (1037) are rotatably connected to the mounting frame (1034), and the sector-shaped teeth (1037) are meshed with one side of the intermediate gear (1036) far away from the driving rack (1035);
the clamping device comprises two symmetrically arranged clamping rod pieces (1038), wherein the clamping rod pieces (1038) and the fan-shaped teeth (1037) are coaxially and rotationally connected onto the mounting frame (1034).
5. A vertical permeate side flow water flow test apparatus as in claim 4,
clamp plate (1032) include clamping piece (1039), fixed clamp plate (104) and extend clamp plate (1040), clamping piece (1039) fixed connection is on fixed clamp plate (104), clamping piece (1039) be used for with clamping member spare (1038) mutually supports, fixed clamp plate (104) internal rotation is connected with extension lead screw (1041), extend clamp plate (1040) threaded connection extend on lead screw (1041), be equipped with the second driving piece on extension lead screw (1041), the second driving piece is used for the drive extend lead screw (1041) and rotate.
6. A vertical permeate side flow water flow test device in accordance with claim 1, wherein the bottom of the device tank (1) is provided with a motorized lift universal wheel (106) and a motorized lift base (107).
7. A vertical permeate side flow water flow test apparatus as in claim 1,
an auxiliary assembly (3) is arranged in the device water tank (1), and the auxiliary assembly (3) comprises a flow guide assembly (300);
the flow directing assembly (300) comprises:
the guide screw (3000), the guide screw (3000) is rotatably connected in a water accumulation cavity (3001) of the device water tank (1), a screw driving motor (5) is arranged on the guide screw (3000), a scraper (3002) is in threaded connection with the guide screw (3000), and the water accumulation cavity (3001) is communicated with a slide cavity (1031);
a water outlet channel (3003), wherein the water outlet channel (3003) is arranged in the device water tank (1) and is communicated with the water accumulation cavity (3001);
the baffle (3004) is connected to the diversion screw (3000) in a sliding manner, the baffle (3004) is connected with the scraper (3002) through an elastic piece, one end, far away from the diversion screw (3000), of the baffle (3004) is attached to the inner wall of the water outlet channel (3003), and a first elastic piece (3005) is fixedly connected between the baffle (3004) and the inner wall of the water collecting cavity (3001);
the gate plate (3006) is connected in the water outlet channel (3003) in a sliding mode, and one end, far away from the water outlet channel (3003), of the gate plate (3006) is located in a driving part mounting cavity (3007);
the guide cylinder (3008), the guide cylinder (3008) is fixedly connected in the driving part installation cavity (3007), and the flashboard (3006) is connected in the guide cylinder (3008) in a sliding manner;
drive pivot (3009), drive pivot (3009) rotate to be connected in drive part installation cavity (3007), be equipped with the third driving piece on drive pivot (3009), the third driving piece is used for driving drive pivot (3009) rotate, drive pivot (3009) go up the key joint and have drive gear (302), drive gear (302) with flashboard (3006) intermeshing.
8. A vertical permeate side flow water flow test apparatus as in claim 7,
the auxiliary assembly (3) comprises a cleaning assembly (301), the cleaning assembly (301) comprising:
the cleaning lead screw (3010), the said cleaning lead screw (3010) is connected in the said drive unit installation cavity (3007) rotatably;
the cleaning device comprises a first bevel gear (3011) and a second bevel gear (3012), wherein the first bevel gear (3011) is connected to the driving rotating shaft (3009) in a sliding key mode, a fourth driving part is arranged on the first bevel gear (3011) and used for driving the first bevel gear (3011) to slide along the driving rotating shaft (3009), the second bevel gear (3012) is connected to the cleaning lead screw (3010) in a key mode, and the first bevel gear (3011) is used for being meshed with the second bevel gear (3012);
the device comprises two guide seats (3013) which are symmetrically arranged, wherein the guide seats (3013) are fixedly connected in the device water tank (1);
a cleaning component housing (3014), wherein the cleaning component housing (3014) is connected to the cleaning lead screw (3010) in a threaded manner, and a cleaning component main body (3015) is arranged in the cleaning component housing (3014);
the cleaning assembly body (3015) includes:
the cleaning component comprises a support (3016), the support (3016) is fixedly connected in the cleaning component shell (3014), an electric telescopic piece (3017) is fixedly connected to the support (3016), and a cleaning component extension rod (3018) is connected to the electric telescopic piece (3017) in a sliding mode from top to bottom;
the cleaning device comprises an electric telescopic cleaning head (3019), the electric telescopic cleaning head (3019) is rotatably connected to a cleaning component extension rod (3018), the electric telescopic cleaning head (3019) is coaxially and rotatably connected with a working state adjusting gear (3020), a fifth driving piece is arranged on the working state adjusting gear (3020) and used for driving the working state adjusting gear (3020) to rotate, and a limit stop (3021) is arranged at one end, close to the electric telescopic cleaning head (3019), of the cleaning component extension rod (3018);
a lifting wedge block (3024), wherein the lifting wedge block (3024) is fixedly connected to the cleaning assembly extension rod (3018), and the lifting wedge block (3024) is used for being matched with a slope (3025) in the cleaning assembly shell (3014);
the locking assembly (3026), the locking assembly (3026) comprises a locking block (3027), the locking block (3027) is slidably connected to the cleaning assembly extension rod (3018) through a second elastic piece (3028), a locking hole (3029) is formed in the support (3016), and the locking hole (3029) is used for being matched with the locking block (3027);
the material placing plate (3022) is fixedly connected in the test cavity (100), a matched cover plate (3023) is arranged on the material placing plate (3022), and the material placing plate (3022) and the matched cover plate (3023) are matched in shape.
9. A vertical permeate side flow water flow test apparatus as set forth in claim 1 and further comprising: a drain assembly (4), the drain assembly (4) comprising:
a drainage dislocation block (400), the drainage dislocation block (400) being mounted on a material placement plate (3022) inside the device water tank (1);
the drainage channel (4000) is fixedly connected to the material placing plate (3022) and is positioned right below the drainage dislocation block (400);
the first connecting elastic piece (4001), the first connecting elastic piece (4001) is fixedly connected between the drainage dislocation block (400) and the inner wall of the drainage channel (4000);
two symmetrically arranged fixed mounting plates (4002), wherein the fixed mounting plates (4002) are fixedly connected in the drainage channel (4000);
the drainage channel is characterized by comprising two symmetrically arranged sliding installation plates (4003), wherein driving wedge blocks (4004) are fixedly connected to the sliding installation plates (4003), the driving wedge blocks (4004) are vertically and slidably connected to wedge block guide rods (4005) of the drainage channel (4000), and sliding driving pieces are arranged on the driving wedge blocks (4004) and used for driving the driving wedge blocks (4004) to slide along the wedge block guide rods (4005);
the water drainage channel (4000) comprises two symmetrically arranged semicircular push plates (4006), wherein the semicircular push plates (4006) are rotatably connected to one end, far away from the inner wall of the water drainage channel (4000), of the fixed mounting plate (4002);
the first cross connecting rod (4007) and the second cross connecting rod (4008) are in cross hinge connection, one end of the first cross connecting rod (4007) is in hinge connection with the semicircular push plate (4006), the other end of the first cross connecting rod (4007) is in sliding connection with the sliding installation plate (4003), one end of the second cross connecting rod (4008) is in hinge connection with the sliding installation plate (4003), and the other end of the second cross connecting rod (4008) is in sliding connection with the fixed installation plate (4002);
the channel baffles (4009) are symmetrically arranged, the channel baffles (4009) are hinged to the inner wall of the drainage channel (4000), and the two channel baffles (4009) are connected through a second connecting elastic piece (401);
two symmetrical arrangement's cooperation wedge (4010), cooperation wedge (4010) sliding connection be in on drainage channel (4000), cooperation wedge (4010) be used for with drive wedge (4004) mutually support, it is connected with connection gyro wheel (4011) to rotate on cooperation wedge (4010), fixedly connected with is acted as go-between (4012) on connecting gyro wheel (4011), it is connected with middle gyro wheel (4013) to rotate on drainage channel (4000) outer wall, it keeps away from to act as go-between (4012) run through behind middle gyro wheel (4013) to the one end of connecting gyro wheel (4011) strides across drainage channel (4000), and fixed connection is in on channel baffle (4009).
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| CN203811515U (en) * | 2014-04-10 | 2014-09-03 | 昆明理工大学 | Field permeation test device of bulk solid material |
| CN104614297A (en) * | 2015-01-28 | 2015-05-13 | 广西大学 | Geotechnical composite drainage material filter membrane horizontal seepage clogging discounting test device and test method thereof |
| CN107014729A (en) * | 2017-01-10 | 2017-08-04 | 中铁二院工程集团有限责任公司 | A kind of adrainage material water flowing performance testing device and test method for considering silting condition |
| CN106769782B (en) * | 2017-01-27 | 2023-07-11 | 北京耐尔得智能科技有限公司 | Concrete water permeability coefficient measuring device and measuring method |
| CN107587578B (en) * | 2017-09-25 | 2019-12-13 | 中国建筑第五工程局有限公司 | Drainage type muck pool and soil pressure balance shield muck multidimensional seepage dewatering method |
| US20190128792A1 (en) * | 2017-11-01 | 2019-05-02 | Lafayette College | Horizontal soil permeability testing device |
| CN108318401A (en) * | 2018-04-04 | 2018-07-24 | 昆明理工大学 | One kind being suitable for anisotropy permeability coefficient test device under soil solidifying stress |
| CN110763608A (en) * | 2019-11-19 | 2020-02-07 | 长安大学 | Device and method for testing permeability of Marshall test piece of asphalt mixture |
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