CN212134433U

CN212134433U - Rock-soil permeability in-situ testing device

Info

Publication number: CN212134433U
Application number: CN202020118651.1U
Authority: CN
Inventors: 刘伟
Original assignee: Guizhou Institute of Technology
Current assignee: Guizhou Institute of Technology
Priority date: 2020-01-18
Filing date: 2020-01-18
Publication date: 2020-12-11
Anticipated expiration: 2030-01-18

Abstract

The utility model discloses a rock-soil permeability in-situ testing device, which comprises a floral tube section, wherein the tube wall of the floral tube section is provided with a water seepage hole, the two ends of the floral tube section are provided with plugging sections separated from the floral tube section, the tube wall of the plugging section is provided with a pressurizing hole, the peripheral surface of the plugging section outside the pressurizing hole is provided with an elastic rubber ring, and the two sides of the elastic rubber ring are hermetically bonded with the outer wall of the plugging section; and the flower tube section and the plugging section are respectively connected with a high-pressure tube. The utility model belongs to an in-situ permeability testing device, which has the characteristics of accurate measuring result and small error; in addition, the device also has the characteristic of reasonable design.

Description

Rock-soil permeability in-situ testing device

Technical Field

The utility model relates to a ground permeability testing arrangement, especially a ground permeability normal position testing arrangement.

Background

The rock-soil permeability test mainly tests the permeability of the rock-soil to water seepage under certain pressure.

At present, in-situ test for rock-soil permeability is not performed, most of tests are performed in a laboratory after rock-soil samples are collected, but after the rock-soil samples are collected, the sample structure is easy to change, and errors of test results are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ground permeability normal position testing arrangement. The utility model belongs to an in-situ permeability testing device, which has the characteristics of accurate measuring result and small error; in addition, the device also has the characteristic of reasonable design.

The technical scheme of the utility model: an in-situ test device for rock-soil permeability comprises a floral tube section, wherein a water seepage hole is formed in the tube wall of the floral tube section, plugging sections separated from the floral tube section are arranged at two ends of the floral tube section, a pressurization hole is formed in the tube wall of each plugging section, an elastic rubber ring is arranged on the peripheral surface of each plugging section outside each pressurization hole, and two sides of each elastic rubber ring are hermetically bonded with the outer wall of each plugging section; and the flower tube section and the plugging section are respectively connected with a high-pressure tube.

According to the rock-soil permeability in-situ testing device, one end of the testing device is connected with the touch head at the front end of the plugging section, the pressurizing pipe for conducting the plugging sections at two ends and the other end are arranged in the flower pipe section, the water guide pipe is arranged at the axis in the plugging section, the one end of the plugging section with the water guide pipe is connected with the splicing type lower pressing rod, an inner sleeve is arranged in the lower pressing rod, one end of the inner sleeve, away from the plugging section, and one end, close to the lower pressing rod, of the water guide pipe are both provided with the female head of connection, and the other end of the inner.

According to the rock-soil permeability in-situ testing device, the inner sleeve is arranged at the axis of the lower pressing rod through the bracket.

According to the rock-soil permeability in-situ testing device, the connecting female head and the connecting male head are horn-shaped.

According to the rock-soil permeability in-situ testing device, the rubber layers are arranged on the inner side of the connecting female head and the outer side of the connecting male head.

According to the rock-soil permeability in-situ testing device, the sealing rubber rings are arranged at the connecting positions between the plugging section and the lower pressing rod and between the lower pressing rod and the lower pressing rod.

The utility model has the advantages that:

the utility model discloses a set up the floral tube section, and set up the infiltration hole on the floral tube section, connect the high-pressure pipe in the floral tube section, when needs test ground permeability, insert the floral tube section in the test area, through connecting the high-pressure water pump on the high-pressure pipe, observe the pressure and the velocity of flow of the water of pouring into, can realize the test of permeability, because adopt the in situ test, the test result is more accurate; meanwhile, the plugging sections are arranged at the two ends of the perforated pipe section, and the elastic rubber ring which is bulged by pressure seals the gap between the two ends of the outer side of the perforated pipe section and rock soil, so that the influence of water seepage from the pipe wall on the permeability test is prevented, the test accuracy is further improved, and the measurement error is reduced; in addition, the utility model is integrated with the contact probe, and is pressed down by the lower pressure rod, and is combined with the traditional rock-soil in-situ test probe, in the combining process, the inner sleeve is arranged in the lower pressure rod, and the pressure increasing pipe and the water guide pipe are respectively arranged in the flower pipe section and the plugging section, so that the independent pressure of the flower pipe section and the plugging section is realized, the independent pressure is not influenced, and the design is reasonable; in addition, after the plugging section is connected with the lower pressing rod, the inner aqueduct and the inner sleeve are connected through the connecting male head and the female head, the respective sealing performance is ensured, and the measurement accuracy can be further improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the utility model during use;

FIG. 2 is a schematic structural diagram of a floral tube segment and a plugging segment.

Description of reference numerals: 1-a flower pipe section, 2-a water seepage hole, 3-a blocking section, 4-a pressurizing hole, 5-an elastic rubber ring, 6-a contact probe, 7-a pressurizing pipe, 8-a water guide pipe, 9-a lower pressure rod, 10-an inner sleeve pipe, 11-a connecting female head, 12-a connecting male head, 13-a bracket and 14-a sealing rubber ring.

Detailed Description

The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.

The embodiment of the utility model provides a:

an in-situ rock-soil permeability testing device is shown in attached figures 1-2 and comprises a flower pipe section 1, wherein a water seepage hole 2 is formed in the pipe wall of the flower pipe section 1, blocking sections 3 which are separated from the flower pipe section 1 are arranged at two ends of the flower pipe section 1, a pressurizing hole 4 is formed in the pipe wall of each blocking section 3, an elastic rubber ring 5 is arranged on the circumferential surface of each blocking section 3 outside each pressurizing hole 4, and two sides of each elastic rubber ring 5 are hermetically bonded with the outer wall of each blocking section 3; and the inside of the flower pipe section 1 and the inside of the plugging section 3 are respectively connected with a high-pressure pipe.

When the device works, a testing device is driven into rock soil, the annular space of the inner sleeve 10 of the uppermost section of the lower pressure lever 9 and the annular space of the pressure lever 9 and the inner sleeve 10 are respectively connected with an external pressure pump, and the external pressure pump has the function of displaying pressure and water flow velocity; then, a pressure pump connected with the inside of the plugging section 3 is opened, the elastic rubber ring 5 on the outer side is expanded by injecting water or high-pressure air, the flower tube section 1 is clamped in the middle, and a gap between the testing device and rock soil is blocked. Then high-pressure water is injected into the flower pipe section 1, the high-pressure water flows out through the water seepage holes 2 and enters rock soil, and at the moment, the flow velocity and the pressure of the water flow are read through an external pressure pump, so that the calculation and the measurement of the permeability can be realized. In actual measurement, the pressure in the plugging section 3 needs to be greater than the pressure in the floral section 1.

Preferably, one end of the plugging section 3 is connected with a touch probe 6, a pressure increasing pipe 7 for conducting the plugging sections 3 at two ends is arranged in the flower pipe section 1, the other end of the pressure increasing pipe is arranged at the axis in the plugging section 3, a water guide pipe 8 is arranged at one end of the plugging section 3 with the water guide pipe 8 inside, the splicing type lower pressing rod 9 is connected with one end of the plugging section 3, the lower pressing rod 9 is in threaded connection with the lower pressing rod 9 and the plugging section 3, an inner sleeve 10 is arranged in the lower pressing rod 9, one end, away from the plugging section 3, of the inner sleeve 10 and one end, close to the lower pressing rod 9, of the water guide pipe 8 are both provided with a female connecting head 11, and the other end of the. During the use, be connected depression bar 9 and shutoff section 3, connect public head 12 and connect female head 11 and aim at, and make aqueduct 8 and interior sleeve pipe 10 link up, then squeeze into the ground inside with the pile driver with the testing arrangement that is equipped with 1 section depression bar 9, when the degree of depth is not enough, multiplicable depression bar 9 splices down, after pushing down to the predetermined degree of depth, connect interior sleeve pipe 10 on high pressure water pump, through interior sleeve pipe 10 and aqueduct 8 to the interior water injection of floral tube section 1, and the annular space between interior sleeve pipe 10 outer wall and the lower depression bar 9 inner wall is the pressurization passageway of shutoff section 3, after sealing the tip of depression bar 9 with the sealing ferrule, can carry out the pressure boost in the shutoff section 3 through the clearance between interior sleeve pipe 10 outer wall and the lower depression bar 9 inner wall.

Preferably, the inner casing 10 is disposed at the axial center of the lower pressing rod 9 through a bracket 13, and the bracket 13 is a connecting rod or a meshed plate with holes, so that the inner wall of the lower pressing rod 9 and the outer wall of the inner casing 10 can be kept open.

Preferably, the female connection head 11 and the male connection head 12 are both flared to facilitate the butt joint of the inner sleeve 10 and the water conduit 8.

Preferably, rubber layers are arranged on the inner side of the female connecting head 11 and the outer side of the male connecting head 12, so that the sealing performance of the connecting position is improved.

Preferably, the rock-soil permeability in-situ testing device is characterized in that: sealing rubber rings 14 are arranged at the connecting positions between the plugging section 3 and the lower pressing rod 9 and between the lower pressing rod 9 and the lower pressing rod 9, so that the sealing performance is improved.

The above description is only for the purpose of illustrating the present invention and the appended claims, and the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a ground permeability normal position testing arrangement which characterized in that: the pipe wall of the floral pipe section (1) is provided with water seepage holes (2), two ends of the floral pipe section (1) are provided with plugging sections (3) separated from the floral pipe section (1), the pipe wall of each plugging section (3) is provided with a pressurizing hole (4), the peripheral surface of each plugging section (3) outside each pressurizing hole (4) is provided with an elastic rubber ring (5), and two sides of each elastic rubber ring (5) are hermetically bonded with the outer wall of each plugging section (3); and high-pressure pipes are respectively connected in the flower pipe section (1) and the plugging section (3).

2. The in-situ rock-soil permeability testing device according to claim 1, characterized in that: wherein one end the front end of shutoff section (3) is connected with touches probe (6), is equipped with booster pipe (7) that switch on both ends shutoff section (3) in colored pipeline section (1), the other end axle center department in shutoff section (3) is equipped with aqueduct (8), and the one end of inside shutoff section (3) that is equipped with aqueduct (8) is connected with depression bar (9) under the concatenation formula, is equipped with interior sleeve pipe (10) in depression bar (9), and the one end that shutoff section (3) were kept away from in interior sleeve pipe (10) and one end that aqueduct (8) are close to depression bar (9) down all are equipped with connects female head (11), and interior sleeve pipe (10) other end is equipped with and is connected female male head (12) of connection that (11) cooperation.

3. The in-situ rock-soil permeability testing device according to claim 2, characterized in that: the inner sleeve (10) is arranged at the axle center of the lower pressure rod (9) through a bracket (13).

4. The in-situ rock-soil permeability testing device according to claim 2, characterized in that: the female connecting head (11) and the male connecting head (12) are both trumpet-shaped.

5. The in-situ rock-soil permeability testing device according to claim 4, characterized in that: rubber layers are arranged on the inner side of the connecting female head (11) and the outer side of the connecting male head (12).

6. The in-situ rock-soil permeability testing device according to claim 2, characterized in that: and sealing rubber rings (14) are arranged at the connecting parts between the plugging section (3) and the lower pressing rod (9) and between the lower pressing rod (9) and the lower pressing rod (9).