CN215640766U - Engineering geology reconnaissance water-pressure test device - Google Patents
Engineering geology reconnaissance water-pressure test device Download PDFInfo
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- CN215640766U CN215640766U CN202122067348.0U CN202122067348U CN215640766U CN 215640766 U CN215640766 U CN 215640766U CN 202122067348 U CN202122067348 U CN 202122067348U CN 215640766 U CN215640766 U CN 215640766U
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- water
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- sealing plate
- water injection
- drill rod
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Abstract
The utility model discloses a water-pressurizing test device for engineering geological exploration, which comprises a drill rod, wherein a drill bit is arranged at the bottom of the drill rod, the drill rod is hollow, a sealing plate is arranged on the inner side of the drill rod, and a closed water injection cavity is formed among the sealing plate, the side wall of the drill rod and the drill bit; the water injection cavity is communicated with the water injection tank through a water injection pipe, and a through hole for the water injection pipe to pass through is formed in the sealing plate; the drill rod is characterized in that an arc-shaped groove is formed in the side wall of the drill rod, a water guide port is formed in one end of the arc-shaped groove and communicated with a water injection cavity, a movable plug is arranged on the outer side of the water guide port and arranged in the arc-shaped groove, the movable plug is connected with one end of a swing rod, the other end of the swing rod is connected to a center rod, and the center rod is fixed to the center of the drill bit. The utility model can play a role in blocking and protecting, prevent soil from blocking the water guide port when the drill rod is pressed in, does not need frequent mounting and dismounting operations, and ensures the accuracy of the test result.
Description
Technical Field
The utility model relates to the field of water-pressing test equipment, in particular to a water-pressing test device for engineering geological exploration.
Background
Engineering geological prospecting is a geological research effort carried out to ascertain geological factors that affect the structure of an engineering. The water pressure test is an in-situ test for pressing water into a drill hole in a high-pressure mode and calculating and knowing the development condition and water permeability of a rock mass fracture according to the water absorption capacity of the rock mass. The water-pressing test is that a drilling test section with a certain length is isolated by special water-stopping equipment, then water is pressed into the drilling section by a fixed water head, water permeates into a rock body through cracks around a hole wall, and finally the amount of permeated water tends to a stable value. According to the water head, the length of the test section and the stable water infiltration amount, the strength of the water permeability of the rock mass can be judged. The pressurized-water test device of present engineering geology reconnaissance usefulness, when the drilling rod at the in-process of impressing, in a large amount of earth gets into the inside outlet port that is linked together with drilling of drilling rod, causes the jam, influences the test result, and a large amount of earth gets into the drilling rod moreover and causes clean difficulty, influences the experimental efficiency of next time.
In order to solve the problem that earth easily causes the jam to the drilling rod apopore, chinese utility model patent No. 202021480816.6 discloses an engineering geology reconnaissance water pressure test device, the device carries out the shutoff through detachable plastics inserted sheet to water guide mouth or the water hole of saying, though the problem of earth to water guide mouth jam has been solved, nevertheless the plastics inserted sheet needs frequent loading and unloading, if when the drilling rod is impressed to needs, need install the plastics inserted sheet this moment, when needing water pressure test, then need dismantle the plastics inserted sheet, and all need extract the drilling rod from drilling during the dismouting of plastics inserted sheet, the operation is more loaded down with trivial details hard, be not applicable to the water pressure test at the different degree of depth positions more.
SUMMERY OF THE UTILITY MODEL
Based on the technical problem, the utility model provides a water pressure test device for engineering geological exploration.
The technical solution adopted by the utility model is as follows:
a water-pressure test device for engineering geological investigation comprises a drill rod, wherein a drill bit is arranged at the bottom of the drill rod, the drill rod is hollow, a sealing plate is arranged on the inner side of the drill rod, and a closed water injection cavity is formed among the sealing plate, the side wall of the drill rod and the drill bit;
the water injection cavity is communicated with the water injection tank through a water injection pipe, and a first through hole for the water injection pipe to pass through is formed in the sealing plate;
an arc-shaped groove is formed in the side wall of the drill rod, a water guide port is formed in one end of the arc-shaped groove and communicated with the water injection cavity, a movable plug is arranged on the outer side of the water guide port and arranged in the arc-shaped groove, the movable plug is connected with one end of a swing rod, the other end of the swing rod is connected to a central rod, and the central rod is fixed at the central position of the drill bit;
the sealing plate comprises a circular plate body, an annular support with an L-shaped section is arranged at the edge of the bottom of the circular plate body, an annular airtight air bag is arranged on the annular support and connected with an inflator pump through an inflation tube, and a second through hole convenient for the inflation tube to pass through is formed in the sealing plate.
Preferably, a filter screen is arranged at the water guide port, and a strip port convenient for the oscillating bar to move back and forth is arranged on the filter screen.
Preferably, the movable plug is made of metal materials, two ends of the movable plug are flat and sharp, and the middle of the movable plug is bulged.
Preferably, an installation plate is further arranged above the sealing plate, an adjusting bolt is arranged on the installation plate, and the bottom of the adjusting bolt is connected with the sealing plate; the bolt of the adjusting bolt is provided with an external thread, the mounting plate is provided with a screw hole, and the inner side wall of the screw hole is provided with an internal thread groove; the mounting plate and the sealing plate are connected with the inner side wall of the drill rod in a rotating and sealing mode.
Preferably, the pressurized water test device further comprises a pressure test meter, and the detection end of the pressure test meter extends into the water injection cavity.
Preferably, sealing rings are arranged on the edge bottom of the sealing plate and the inner wall of the drill rod and are positioned below the sealing plate.
Preferably, the drill rod comprises a main body section and a lower connecting section, the bottom of the main body section is connected with the top of the lower connecting section through a nut, the drill bit is connected to the bottom of the lower connecting section, and the arc-shaped groove is formed in the lower connecting section.
The beneficial technical effects of the utility model are as follows:
the utility model adopts the matching structures of the arc-shaped groove, the movable plug and the like, not only can play a role of blocking and protecting, but also can prevent soil from blocking the water guide port when the drill rod is pressed in, and does not need frequent assembly and disassembly operations. And the utility model can also carry on the test operation of water pressing in different depth segments as required, when needing to bore downwards, rotate the bit forward, the activity is plugged at this moment and is plugged the water guiding mouth. In addition, the utility model also carries out inflation sealing through the inflatable annular airtight air bag, thereby ensuring the airtight effect of the water injection chamber and ensuring the accuracy of the test result.
Drawings
The utility model will be further described with reference to the following detailed description and drawings:
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of a drill pipe section according to the present invention;
FIG. 3 is a cross-sectional view of a drill rod in a partial position, mainly illustrating a schematic diagram of opening and closing a water guide port, and illustrating a closed state of the water guide port;
FIG. 4 is a cross-sectional view of a drill rod in a partial position, mainly illustrating a schematic diagram of opening and closing a water guide port, wherein the water guide port is shown in an open state;
FIG. 5 is a partial schematic top view of the drill rod of the present invention with an arc-shaped groove formed in the sidewall thereof;
FIG. 6 is a schematic structural view of another embodiment of a drill pipe section according to the present invention;
fig. 7 is a partially enlarged view of fig. 6.
Detailed Description
With the attached drawings, the engineering geological exploration water-pressure test device comprises a drill rod 1, wherein a drill bit 2 is arranged at the bottom of the drill rod 1, and the drill rod 1 is hollow. A sealing plate 3 is arranged on the inner side of the drill rod 1, and a closed water injection cavity 4 is formed among the sealing plate 3, the side wall of the drill rod 1 and the drill bit 2. The water injection chamber 4 is communicated with a water injection tank 6 through a water injection pipe 5, and a first through hole which is convenient for the water injection pipe to pass through is arranged on the sealing plate 3. An arc-shaped groove 7 is formed in the side wall of the drill rod 1, a water guide port 8 is formed in one end of the arc-shaped groove, the water guide port 8 is communicated with the water injection cavity 4, a movable plug 9 is arranged on the outer side of the water guide port 8, the movable plug 9 is arranged in the arc-shaped groove 7, the movable plug 9 is connected with one end of a swing rod 10, the other end of the swing rod 10 is connected to a central rod 11, and the central rod 11 is fixed to the center of the drill bit 2. When the drill bit rotates forwards, the movable plug 9 is located at one end close to the arc-shaped groove 7, the water guide port 8 is plugged by the movable plug 9, and the water guide port 8 is prevented from being plugged by soil when a drill rod is pressed in. When the drill rod drills into a measuring position and needs to be subjected to a water pressure test, the drill bit 2 is rotated in a reverse direction for a certain angle, the movable plug 9 is located at the other end close to the arc-shaped groove 7, the water guide opening 8 is opened, and the water pressure test can be carried out. The sealing plate 3 comprises a circular plate body, an annular support 301 with an L-shaped cross section is arranged at the edge of the bottom of the circular plate body, an annular airtight air bag 12 is arranged on the annular support, the annular airtight air bag 12 is connected with an inflator pump 14 through an inflation tube 13, and a second through hole convenient for the inflation tube to pass through is formed in the sealing plate.
The utility model adopts the matching structures of the arc-shaped groove, the movable plug and the like, not only can play a role of blocking and protecting, but also can prevent soil from blocking the water guide port when the drill rod is pressed in, and does not need frequent assembly and disassembly operations. And the utility model can also carry on the test operation of water pressing in different depth segments as required, when needing to bore downwards, rotate the bit forward, the activity is plugged at this moment and is plugged the water guiding mouth. In addition, the utility model also carries out inflation sealing through the inflatable annular airtight air bag, thereby ensuring the airtight effect of the water injection chamber and ensuring the accuracy of the test result.
As a further design of the utility model, a filter screen 15 is arranged at the water guide port 8, and a strip-shaped port 16 which is convenient for the oscillating bar 10 to move back and forth is arranged on the filter screen 15. Through the structure, the filter screen 15 can further play a role in preventing sundries such as soil outside the drill rod from entering the water injection cavity inside the drill rod, and cannot influence the back and forth movement of the swing rod 10 which drives the movable plugging to move.
Furthermore, the movable plug 9 is made of metal material, and has two flat and sharp ends and a raised middle part. In-process at the drilling rod drilling, it has things such as earth to fill in the arc recess to avoid, like this when drilling rod antiport prepares the pressurized-water test, the activity shutoff can come out the clearance such as earth in the arc recess, prevents to block up the water guide mouth to cause the influence to the pressurized-water test.
Furthermore, a mounting plate 17 is further arranged above the sealing plate 3, an adjusting bolt 20 is arranged on the mounting plate, the bottom of the adjusting bolt 20 is connected with the sealing plate 3, and the position of the sealing plate 3 in the drill rod 1 can be adjusted through the adjusting bolt. The adjusting bolt is characterized in that external threads are arranged on a bolt column of the adjusting bolt, a screw hole is formed in the mounting plate, and an internal thread groove is formed in the inner side wall of the screw hole. The mounting plate 17 and the sealing plate 3 are connected with the inner side wall of the drill rod in a rotating and sealing mode, and can be achieved through conventional structures such as rotating bearings and/or rotating sealing rings.
Furthermore, the water pressure test device also comprises a pressure test meter 18, and the detection end of the pressure test meter 18 extends into the water injection chamber 4. The pressure in the water injection chamber 4 can be measured in real time through the pressure test meter 18, so that the water pressing test can be carried out smoothly.
Furthermore, sealing gaskets 19 are arranged on the bottom of the edge of the sealing plate 3 and the inner wall of the drill rod and below the sealing plate, and the sealing gaskets 19 can be matched with the inflated annular sealing air bag 12 to achieve a good sealing effect on the water injection cavity 4.
Further, the drill rod 1 comprises a body section 101 and a lower connecting section 102, wherein the bottom of the body section is connected with the top of the lower connecting section through a nut 103, the drill bit 2 is connected with the bottom of the lower connecting section 102, and the arc-shaped groove 7 is arranged on the lower connecting section. Through this structural style, made things convenient for the equipment of drilling rod 1 to dismantle, also can change the main part section of different length according to the pressurized-water test needs moreover, more nimble, the range of application is wider. The drill rod 1 can be rotated by a power system or the like.
The working process of the utility model is roughly as follows:
when a pressurized-water test is required, the drill bit is driven to rotate in the forward direction through the power system so as to press the drill rod in. When the power system rotates forwards, the movable plug 9 is located at one end close to the arc-shaped groove 7, the water guide port 8 is plugged by the movable plug 9, and the water guide port 8 is prevented from being plugged by soil when a drill rod is pressed in. When the drill rod drills into a measuring position and needs to be subjected to a water pressure test, the drill bit 2 is rotated in a reverse direction for a certain angle, the movable plug 9 is located at the other end close to the arc-shaped groove 7, the water guide opening 8 is opened, and the water pressure test can be carried out.
And starting the inflator pump 14, inflating the annular airtight air bag 12 by the inflator pump 14 through the inflation tube 13, and after inflation is finished, better sealing is achieved between the water injection chamber and the side wall of the drill rod. At this time, the water injection tank 6 is opened, the water injection tank 6 injects high-pressure water into the water injection chamber 4 through the water injection pipe 5, and the water in the water injection chamber 4 is pressed into the rock body through the water guide port 8, so that the water pressure test at the depth position section is performed.
And after the pressurized-water test is finished, closing the inflator pump 14 and the water injection pipe 5, continuously pressing the drill rod 1 downwards, reversely rotating the drill rod when the drill rod 1 is pressed into the measuring position of the next pressurized-water test, opening the inflator pump 14 and the water injection pipe 5 again, and repeating the steps of the pressurized-water test.
The adjusting bolt 20 can adjust the position of the sealing plate 3 in the drill rod 1 according to requirements before a water pressure test.
Parts not described in the above modes can be realized by adopting or referring to the prior art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an engineering geology reconnaissance water-pressure test device which characterized in that: the drilling rod comprises a drilling rod, wherein a drill bit is arranged at the bottom of the drilling rod, the drilling rod is hollow, a sealing plate is arranged on the inner side of the drilling rod, and a closed water injection cavity is formed among the sealing plate, the side wall of the drilling rod and the drill bit;
the water injection cavity is communicated with the water injection tank through a water injection pipe, and a first through hole for the water injection pipe to pass through is formed in the sealing plate;
an arc-shaped groove is formed in the side wall of the drill rod, a water guide port is formed in one end of the arc-shaped groove and communicated with the water injection cavity, a movable plug is arranged on the outer side of the water guide port and arranged in the arc-shaped groove, the movable plug is connected with one end of a swing rod, the other end of the swing rod is connected to a central rod, and the central rod is fixed at the central position of the drill bit;
the sealing plate comprises a circular plate body, an annular support with an L-shaped section is arranged at the edge of the bottom of the circular plate body, an annular airtight air bag is arranged on the annular support and connected with an inflator pump through an inflation tube, and a second through hole convenient for the inflation tube to pass through is formed in the sealing plate.
2. The engineering geological survey water pressure test device of claim 1, characterized in that: a filter screen is arranged at the water guide opening, and a strip-shaped opening convenient for the oscillating bar to move back and forth is arranged on the filter screen.
3. The engineering geological survey water pressure test device of claim 1, characterized in that: the movable plug is made of metal materials, two ends of the movable plug are flat and sharp, and the middle of the movable plug is bulged.
4. The engineering geological survey water pressure test device of claim 1, characterized in that: an installation plate is arranged above the sealing plate, an adjusting bolt is arranged on the installation plate, and the bottom of the adjusting bolt is connected with the sealing plate; the bolt of the adjusting bolt is provided with an external thread, the mounting plate is provided with a screw hole, and the inner side wall of the screw hole is provided with an internal thread groove; the mounting plate and the sealing plate are connected with the inner side wall of the drill rod in a rotating and sealing mode.
5. The engineering geological survey water pressure test device of claim 1, characterized in that: the pressure testing device further comprises a pressure testing meter, and the detection end of the pressure testing meter extends into the water injection cavity.
6. The engineering geological survey water pressure test device of claim 1, characterized in that: and sealing rings are arranged on the edge bottom of the sealing plate and the inner wall of the drill rod and below the sealing plate.
7. The engineering geological survey water pressure test device of claim 1, characterized in that: the drill rod comprises a main body section and a lower connecting section, the bottom of the main body section is connected with the top of the lower connecting section through a nut, the drill bit is connected to the bottom of the lower connecting section, and the arc-shaped groove is formed in the lower connecting section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122067348.0U CN215640766U (en) | 2021-08-30 | 2021-08-30 | Engineering geology reconnaissance water-pressure test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122067348.0U CN215640766U (en) | 2021-08-30 | 2021-08-30 | Engineering geology reconnaissance water-pressure test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215640766U true CN215640766U (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122067348.0U Expired - Fee Related CN215640766U (en) | 2021-08-30 | 2021-08-30 | Engineering geology reconnaissance water-pressure test device |
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| CN (1) | CN215640766U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115824720A (en) * | 2023-02-17 | 2023-03-21 | 北京中联勘工程技术有限责任公司 | Underground water sample collecting device and method for engineering geological exploration |
-
2021
- 2021-08-30 CN CN202122067348.0U patent/CN215640766U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115824720A (en) * | 2023-02-17 | 2023-03-21 | 北京中联勘工程技术有限责任公司 | Underground water sample collecting device and method for engineering geological exploration |
| CN115824720B (en) * | 2023-02-17 | 2023-04-21 | 北京中联勘工程技术有限责任公司 | Underground water sample taking device and method for engineering geological investigation |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220125 |
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| CF01 | Termination of patent right due to non-payment of annual fee |