CN210665430U - Pressure soil permeameter - Google Patents

Abstract

The utility model relates to a pressurization formula soil infiltration appearance uses in soil infiltration nature detection and detection field, and its technical scheme main points are: the soil sample pressing device comprises a base placed on a workbench, wherein a sleeve seat is arranged on the base, a soil sample cutting ring is arranged in the sleeve seat, an upper cover is arranged on the sleeve seat, a water inlet hole is formed in the upper cover, a water outlet hole is formed in the base, and a pressing piece for pressing a soil sample in the soil sample cutting ring is arranged above the upper cover; has the technical effects that: the magnitude of the pressurized pressure can be visually adjusted to simulate the stress state of the soil at the sampling depth, and the accuracy of the test result is high.

Description

Pressure soil permeameter

Technical Field

The utility model belongs to the technical field of the technique that soil permeability detected and specifically relates to a pressurization formula soil permeameter is related to.

Background

The property of soil to be permeated by water is called soil permeability. The permeability is an important engineering property of the soil body, determines the strength property, deformation and consolidation properties of the soil body, and the permeability problem is one of three important problems of soil mechanics and forms three main problems of the soil mechanics together with the strength problem and the deformation problem.

The publication number CN202854015U discloses a soil permeameter, which comprises an upper cover, a base, a sleeve seat, a screw rod and a water inlet pipe, wherein the upper cover is fixed on the base, the upper cover is provided with a water inlet hole, the base is provided with a water outlet hole, the sleeve seat comprises a cross beam and a vertical rod which are mutually and vertically connected, and the vertical rod is fixed on the base; the screw rod is connected on the crossbeam of cover seat, and the bottom top of screw rod is covered on the upper cover, and the inlet port of inlet tube and upper cover is connected, still includes air compressor, and air compressor and inlet tube pipe connection. After soil is taken out from a certain depth under the ground, original stress is released, and the test result can be influenced by pore changes, so that the soil to be tested can be pressurized in the test process, and the stress state of the soil at the sampling depth is simulated to improve the precision of the test result.

However, the soil permeameter pressurizes in a mode that the screw rod rotates downwards, the pressurized pressure is difficult to measure, the stress state of soil at the sampling depth is difficult to simulate, and the accuracy of the test result is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pressurization formula soil infiltration appearance, its advantage: the magnitude of the pressurized pressure can be visually adjusted to simulate the stress state of the soil at the sampling depth, and the accuracy of the test result is high.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a pressurization formula soil infiltration appearance, contain place the base on the workstation be equipped with the cover seat on the base, be equipped with the soil sample cutting ring in the cover seat, be equipped with the upper cover on the cover seat, on cover and be equipped with the inlet opening, be equipped with the apopore on the base, the top of upper cover is equipped with and is used for carrying out the pressor pressure piece for the soil sample in the soil sample cutting ring.

Through the technical scheme, the staff can place the cover seat with the soil sample cutting ring of getting good soil sample in, cover the upper cover, use the pressure piece on the upper cover to pressurize the soil sample in the soil sample cutting ring through the upper cover, carry out visual regulation to the pressure that the pressure piece was applyed, make the pressure that the soil sample bore unanimous with the pressure that receives when subaerial, thereby reach the stress state of simulation soil in sampling depth department, reduced soil and taken out the back from certain degree of depth subaerial, original stress release, the pore change, the permeability that leads to soil changes, and then the possibility of the precision of influence final test result, the precision of test result has been promoted.

The utility model discloses further set up to: the pressure piece comprises a plurality of weights, a first miniature electronic scale and a code disc, the first miniature electronic scale is located on the end face, far away from the base, of the upper cover, the code disc is located on the measuring face of the first miniature electronic scale, and the weights are located in the code disc.

Through the technical scheme, the mode that the staff accessible increases or reduces the weight number in the code wheel is to applying the pressure size of giving the soil sample and adjusting, because the upper cover, the quality of first miniature electronic scale and code wheel is the fixed value, consequently, the reading of the weight quality that staff accessible showed on the first miniature electronic scale carries out visual regulation to pressor pressure size, in order to reach the effect of simulation soil at the stress state of sampling depth department, it takes out the back from certain degree of depth subaerial to have reduced soil, original stress release, the pore change leads to the permeability of soil to change, and then the possibility of the precision of influence final test result, the precision of test result has been promoted.

The utility model discloses further set up to: the pressure piece comprises a first support frame, a sand box, a sand outlet pipe, a first switch, a second miniature electronic scale and a weighing box, the first support frame is positioned on the workbench, the sand box is positioned on the first support frame, the sand outlet pipe is communicated with the sand box, the first switch is positioned on the sand outlet pipe and used for controlling the on-off of the sand outlet pipe, the second miniature electronic scale is positioned on the end face, far away from the base, of the upper cover, the weighing box is positioned on the measuring face on the second miniature electronic scale, a sand outlet of the sand outlet pipe is positioned above the weighing box, and the sand box is higher than the weighing box.

Through the technical scheme, a worker can open the first switch to enable fine sand in the sand box to fall into the weighing box along the sand outlet pipe under the influence of self gravity, and the mass of the upper cover, the second micro electronic scale and the weighing box is fixed, so that the worker can adjust the magnitude of the pressurized pressure through the indicating value of the mass of the sand in the weighing box displayed on the second micro electronic scale, when the pressure borne by a soil sample in the sleeve seat is consistent with the pressure borne by the soil sample under the ground, the worker can close the first switch, the effect of simulating the stress state of the soil at the sampling depth is achieved by adjusting the quantity of the sand falling into the weighing box, the possibility that the original stress is released and the porosity of the soil is changed to cause the change of the permeability of the soil after the soil is taken out from a certain depth under the ground is reduced, and the accuracy of a final test result is further influenced, the accuracy of test result has been promoted.

The utility model discloses further set up to: be equipped with the regulating box on the first support frame, the height of regulating box is less than the box of weighing, be equipped with the adjusting hose who is linked together with the box of weighing on the box of weighing, the port department of adjusting hose is equipped with the couple, be equipped with on the outer wall of the box of weighing and get in touch assorted link.

Through the technical scheme, the staff can upwards mention the port of the adjusting hose that links to each other with the box of weighing, make couple and link separation, then in placing the adjusting box on the support frame with the port of adjusting hose, make the sand in the box of weighing to receive self gravity influence can fall into the adjusting box along adjusting hose, the quantity of sand in the staff accessible adjusting hose symmetry weight box is adjusted, in taking out the adjusting box to the sand in the box of weighing, it is too much to have reduced the sand that falls in the box of weighing, the staff is difficult to the possibility of taking out unnecessary sand.

The utility model discloses further set up to: and a permeable stone is arranged in the sleeve seat, the permeable stone is positioned between the upper cover and the soil sample cutting ring, and the permeable stone is matched with the soil sample cutting ring.

Through above-mentioned technical scheme, on the water that gets into from the upper cover inlet opening can drop earlier the permeable stone in the testing process, the permeable stone has the effect that can supply water and see through, consequently, do not influence the rivers of inlet opening department to the soil that awaits measuring, the permeable stone makes the top can evenly be applyed on the soil that awaits measuring to the pressure that soil was applyed that awaits measuring, it leads to its upper surface unevenness to have reduced the soil atress that awaits measuring inhomogeneous, destroy the permeability of the soil itself that awaits measuring, influence the possibility of test result precision then.

The utility model discloses further set up to: the water outlet pipe is connected with a water inlet hole in the upper cover, and a second switch used for controlling the on-off of the water outlet pipe is arranged on the water outlet pipe.

Through above-mentioned technical scheme, when needs added water the operation, the staff can open the second switch and make the water in the graduated flask enter into the cover seat along the inlet opening that the outlet pipe covered on through, and staff can record initial flood peak and termination flood peak according to the scale on the graduated flask among the test process to the staff can judge the infiltration nature of the soil that awaits measuring in view of the above, experimental record process is simple, has promoted the efficiency of whole experiment.

The utility model discloses further set up to: a first annular groove is formed in the permeable stone, an upper sealing ring is sleeved in the first annular groove, and the upper sealing ring is tightly abutted to the inner wall of the sleeve seat.

Through above-mentioned technical scheme, last sealing washer on the permeable stone plays the effect of sealed cover seat, has reduced the water part that gets into from the upper cover inlet opening and has directly flowed down along the clearance between soil sample cutting ring and the sleeve, and then influences the possibility of the degree of accuracy of final test result, has promoted the degree of accuracy of overall test.

The utility model discloses further set up to: the improved soil sample cutting device is characterized in that a water seepage stone is arranged in the sleeve seat and located between the base and the soil sample cutting ring, a second annular groove is formed in the water seepage stone, a lower sealing ring is sleeved in the second annular groove, and the lower sealing ring is tightly abutted to the inner wall of the sleeve seat.

Through the technical scheme, water above the water seepage stone can permeate through the water seepage stone and then flows out of the water outlet hole in the base, so that the water discharge process in the measurement process is not influenced; lower sealing washer on the infiltration stone plays the telescopic effect in sealed bottom, has reduced the water in the sleeve and has revealed along the gap between sleeve and the base, influences the possibility of the degree of accuracy of final test result, has promoted the degree of accuracy of overall test.

To sum up, the utility model discloses a beneficial technological effect does:

1. the pressurized soil permeameter can visually adjust the magnitude of the pressurized pressure so as to simulate the stress state of the soil at the sampling depth, and the accuracy of the test result is higher;

2. go up sealing washer and lower sealing washer and reduced the possibility that the water was revealed from the cover seat in the experimentation, promoted the degree of accuracy of whole experiment.

Drawings

Fig. 1 is a schematic view of the entire structure of embodiment 1.

FIG. 2 is a schematic sectional view of a soil sample cutting ring used in example 1.

FIG. 3 is a schematic view of the entire structure of embodiment 2.

FIG. 4 is a schematic sectional view of the permeable stone embodied in example 2.

Reference numerals: 1. a work table; 2. a base; 3. a sleeve seat; 4. a soil sample cutting ring; 5. an upper cover; 6. a water inlet hole; 7. a water outlet hole; 8. a pressing member; 9. a weight; 10. a first miniature electronic scale; 11. code disc; 12. a first support frame; 13. a sandbox; 14. a sand outlet pipe; 15. a first switch; 16. a second miniature electronic scale; 17. a weighing box; 18. an adjustment box; 19. adjusting the hose; 20. hooking; 21. hanging a ring; 22. a permeable stone; 23. a second support frame; 24. a measuring cylinder; 25. calibration; 26. a water outlet pipe; 27. a second switch; 28. a first annular groove; 29. an upper sealing ring; 30. water seepage stone; 31. a second annular groove; 32. and a lower sealing ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: a pressurized soil permeameter, as shown in figure 1 and figure 2, comprises a base 2 placed on a workbench 1, a sleeve seat 3 arranged on the base 2, a soil sample cutting ring 4 arranged in the sleeve seat 3, an upper cover 5 arranged on the sleeve seat 3, a water inlet hole 6 arranged on the upper cover 5, a water outlet hole 7 arranged on the base 2, a first micro electronic scale 10 arranged on the end surface of the upper cover 5 far away from the base 2, a coded disc 11 arranged on the measuring surface of the first micro electronic scale 10, and a plurality of weights 9 arranged in the coded disc 11. Therefore, the worker can place the soil sample cutting ring 4 with the soil sample in the sleeve base 3, cover the upper cover 5, at the moment, the pressure value of the soil to be measured is the total mass of the upper cover 5, the first micro electronic scale 10 and the coded disc 11, the mass of the three is a fixed value and is set as a first mass, the mass of the weights 9 in the coded disc 11 is determined by the number of the placed weights 9, the mass can be measured by the first micro electronic scale 10 and is set as a second mass, and at the moment, the pressure of the soil sample in the soil sample cutting ring 4 is the sum of the first mass and the second mass.

As shown in fig. 1 and 2, the number of the weights 9 can be adjusted by the operator, so that the sum of the indication (i.e. the second mass) and the first mass on the first miniature electronic scale 10 is equal to the pressure value of the soil to be tested in the soil sample cutting ring 4 at the sampling depth, thereby achieving the effect of visually adjusting the pressure applied to the soil in the soil sample cutting ring 4, so as to simulate the stress state of the soil in the soil sample cutting ring 4 at the sampling depth, and reduce the possibility that the permeability of the soil in the soil sample cutting ring 4 changes due to the original stress release and the pore change after the soil in the soil sample cutting ring 4 is taken out from a certain depth under the ground, thereby affecting the accuracy of the final test result and improving the accuracy of the test result.

Example 2: a pressure type soil permeameter, which is different from example 1 in that: as shown in fig. 3 and 4, the pressure member 8 includes a first supporting frame 12, a sand box 13, a sand outlet pipe 14, a first switch 15, a second micro electronic scale 16 and a weighing box 17, the first supporting frame 12 is located on the workbench 1, the sand box 13 is located on the first supporting frame 12, the sand outlet pipe 14 is communicated with the sand box 13, the first switch 15 is located on the sand outlet pipe 14 for controlling the on-off of the sand outlet pipe 14, the second micro electronic scale 16 is located on the end surface of the upper cover 5 away from the base 2, the weighing box 17 is located on the measuring surface of the second micro electronic scale 16, the sand outlet of the sand outlet pipe 14 is located above the weighing box 17, and the height of the sand box 13 is set as: the bottom surface of the sand box 13 is higher than the upper end surface of the weighing box 17. The staff can place the soil sample cutting ring 4 of getting the soil sample in the cover seat 3, cover upper cover 5, at this moment, the pressure value that the soil that awaits measuring in the soil sample cutting ring 4 received is the total mass of upper cover 5, second miniature electronic scale 16 and the box 17 of weighing, the mass of three is the fixed value, set as the third mass, the mass of the sand in the box 17 of weighing is decided by the volume of the sand in the box 17 of weighing, set as the fourth mass, and this mass can be measured by second miniature electronic scale 16, at this moment, the pressure that the soil sample in the soil sample cutting ring 4 of weighing received is the sum of third mass and fourth mass promptly.

As shown in fig. 3 and 4, since the height of the sandbox 13 is higher than that of the weighing box 17, after the worker turns on the first switch 15, sand in the sandbox 13 falls into the weighing box 17 through the sand outlet pipe 14 under the influence of self gravity, the worker can judge whether the amount of sand in the sandbox 13 is enough according to the indication number on the second miniature electronic scale 16, and when the amount of sand in the sandbox 13 reaches a predetermined value, the method comprises the following steps: the sum of the third mass and the fourth mass is the same as the pressure value of the soil to be measured in the soil sample cutting ring 4 at the sampling depth. The staff can close first switch 15 and prevent the sand in the sand box 13 to continue to fall, thereby reach the effect of carrying out visual regulation to the soil pressurization's in the soil sample cutting ring 4 pressure size, in order to simulate the stress state of soil in the soil sample cutting ring 4 in the sample depth department, soil in the soil sample cutting ring 4 has been reduced and the back is taken out from certain degree of depth under the ground, original stress release, the pore change, lead to the permeability of soil in the soil sample cutting ring 4 to change, and then influence the possibility of the precision of final test result, the precision of test result has been promoted.

As shown in fig. 3, an adjusting box 18 is disposed on the first supporting frame 12, and the height of the adjusting box 18 is set as: the bottom surface of the weighing box 17 is higher than the upper port of the adjusting box 18, the weighing box 17 is provided with an adjusting hose 19 communicated with the weighing box 17, the communicated part is positioned at the bottom of the weighing box 17, the port of the adjusting hose 19 is provided with a hook 20, and the outer wall above the weighing box 17 is provided with a hanging ring 21 matched with the hook 20. Therefore, the adjusting hose 19 is hung on the hook 20 of the weighing box 17 through the hook 20 at ordinary times, sand in the weighing box 17 is difficult to flow out from the adjusting hose 19, when the amount of the sand in the weighing box 17 needs to be reduced, a worker can take the adjusting hose 19 off the weighing box 17 and place the port of the adjusting hose 19 into the adjusting box 18 below, so that the sand in the weighing box 17 falls towards the adjusting box 18 along the adjusting hose 19 to play a role in adjusting the amount of the sand in the weighing box 17, the excessive sand falling in the weighing box 17 is reduced, and the possibility that the worker is difficult to take out redundant sand is reduced. After the adjustment is completed, the adjustment hose 19 is hung back to the weighing box 17.

Referring to fig. 3, a second support frame 23 is arranged on the workbench 1, the base 2 is located between the first support frame 12 and the second support frame 23, a transparent measuring cylinder 24 is arranged on the second support frame 23, scales 25 are arranged on the measuring cylinder 24, a water outlet pipe 26 communicated with the measuring cylinder 24 is arranged at the bottom of the measuring cylinder 24, one end, far away from the measuring cylinder 24, of the water outlet pipe 26 is connected with the water inlet hole 6 on the upper cover 5, and a second switch 27 for controlling the on-off of the water outlet pipe 26 is arranged on the water outlet pipe 26. Therefore, when the soil in the soil sample cutting ring 4 needs to be added with water, the staff can open the second switch 27 to enable the water in the measuring cylinder 24 to enter the soil sample cutting ring 4 through the water inlet hole 6 on the upper cover 5 along the water outlet pipe 26, the staff can record the initial water head and the termination water head according to the scales 25 on the measuring cylinder 24 in the test process, so that the staff can judge the water permeability of the soil to be measured in the soil sample cutting ring 4 afterwards, the test recording process is simple, and the efficiency of the overall test is improved.

As shown in fig. 4, a permeable stone 22 matched with the soil sample cutting ring 4 is arranged between the upper cover 5 and the soil sample cutting ring 4, a first annular groove 28 is formed in the permeable stone 22, an upper sealing ring 29 is sleeved in the first annular groove 28, a water-permeable stone 30 is arranged between the base 2 and the soil sample cutting ring 4, a second annular groove 31 is formed in the water-permeable stone 30, a lower sealing ring 32 is sleeved in the second annular groove 31, water above the permeable stone 22 and the water-permeable stone 30 can continuously flow through the permeable stone 22 and the water-permeable stone 30, the first annular groove 28 and the second annular groove 31 have the functions of fixing the upper sealing ring 29 and the lower sealing ring 32, and a worker can conveniently and respectively sleeve the upper sealing ring 29 and the lower sealing ring 32 on the permeable stone 22 and the water-permeable stone 30. The permeable stone 22 is positioned between the upper cover 5 and the soil sample cutting ring 4, so that the soil in the soil sample cutting ring 4 can uniformly bear the pressure from above, and the possibility that the upper surface of the soil sample cutting ring 4 is inclined due to non-uniform soil strength, and the accuracy of a test result is influenced is reduced; the upper sealing ring 29 and the lower sealing ring 32 are respectively tightly abutted against the inner walls of the two ends of the sleeve seat 3, so that the sleeve seat 3 is sealed, and the possibility that water flow leaks from the gap between the sleeve seat 3 and the soil sample cutting ring 4 or the gap between the sleeve seat 3 and the base 2 to influence the final experimental result is reduced.

The operation process is as follows: before carrying out the experiment, the staff places the cover seat 3 on base 2, establish infiltration stone 30 with lower sealing washer 32 cover on, place infiltration stone 30 on the base 2 of cover seat 3 bottom, place the soil sample cutting ring 4 that will have the soil that awaits measuring on the infiltration stone 30, establish on the permeable stone 22 with last sealing washer 29 cover, place permeable stone 22 on soil sample cutting ring 4, cover upper cover 5, open first switch 15, adjust the pressurized pressure, later open second switch 27 and add the water operation, accomplish surplus experimental step.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (8)

1. The utility model provides a pressurization formula soil permeameter which characterized in that: contain place base (2) on workstation (1) be equipped with cover seat (3) on base (2), be equipped with soil sample cutting ring (4) in cover seat (3), be equipped with upper cover (5) on cover seat (3), be equipped with inlet opening (6) on upper cover (5), be equipped with apopore (7) on base (2), the top of upper cover (5) is equipped with and is used for carrying out pressor pressurization spare (8) for the soil sample in soil sample cutting ring (4).

2. A pressurized soil permeameter according to claim 1, wherein: the pressure piece (8) comprises a plurality of weights (9), a first miniature electronic scale (10) and a coded disc (11), the first miniature electronic scale (10) is located on the end face, far away from the base (2), of the upper cover (5), the coded disc (11) is located on the measuring face of the first miniature electronic scale (10), and the weights (9) are located in the coded disc (11).

3. A pressurized soil permeameter according to claim 1, wherein: the sand outlet device is characterized in that the pressurizing part (8) comprises a first supporting frame (12), a sand box (13), a sand outlet pipe (14), a first switch (15), a second micro electronic scale (16) and a weighing box (17), the first supporting frame (12) is located on the workbench (1), the sand box (13) is located on the first supporting frame (12), the sand outlet pipe (14) is communicated with the sand box (13), the first switch (15) is located on the sand outlet pipe (14) and used for controlling the on-off of the sand outlet pipe (14), the second micro electronic scale (16) is located on the end face, far away from the base (2), of the upper cover (5), the weighing box (17) is located on the measuring face of the second micro electronic scale (16), a sand outlet of the sand outlet pipe (14) is located above the weighing box (17), and the height of the sand box (13) is higher than that of the weighing box (17).

4. A pressurized soil permeameter according to claim 3, wherein: be equipped with adjusting box (18) on first support frame (12), highly being less than weighing box (17) of adjusting box (18), be equipped with on weighing box (17) and weigh adjusting hose (19) that box (17) are linked together, the port department of adjusting hose (19) is equipped with couple (20), be equipped with on the outer wall of weighing box (17) with couple (20) assorted link (21).

5. A pressurized soil permeameter according to claim 3, wherein: be equipped with permeable stone (22) in cover seat (3), permeable stone (22) are located between upper cover (5) and soil sample cutting ring (4), permeable stone (22) and soil sample cutting ring (4) phase-match.

6. A pressurized soil permeameter according to claim 3, wherein: be equipped with second support frame (23) on workstation (1), be equipped with transparent graduated flask (24) on second support frame (23), be equipped with scale (25) on graduated flask (24), the bottom of graduated flask (24) is equipped with outlet pipe (26) that are linked together with graduated flask (24), the one end that graduated flask (24) were kept away from in outlet pipe (26) links to each other with inlet opening (6) on upper cover (5), be equipped with second switch (27) that are used for controlling outlet pipe (26) break-make on outlet pipe (26).

7. A pressurized soil permeameter according to claim 5, wherein: a first annular groove (28) is formed in the permeable stone (22), an upper sealing ring (29) is sleeved in the first annular groove (28), and the upper sealing ring (29) is abutted to the inner wall of the sleeve seat (3).

8. A pressurized soil permeameter according to claim 3, wherein: be equipped with infiltration stone (30) in cover seat (3), infiltration stone (30) are located between base (2) and soil sample cutting ring (4), second ring channel (31) have been seted up on infiltration stone (30), lower sealing washer (32) have been established to second ring channel (31) endotheca, lower sealing washer (32) are supported tightly with the inner wall of cover seat (3).

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