CN218766509U - Drilling constant head water injection test device - Google Patents
Drilling constant head water injection test device Download PDFInfo
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- CN218766509U CN218766509U CN202222538083.2U CN202222538083U CN218766509U CN 218766509 U CN218766509 U CN 218766509U CN 202222538083 U CN202222538083 U CN 202222538083U CN 218766509 U CN218766509 U CN 218766509U
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- sleeve
- outlet pipe
- drilling
- water outlet
- measuring cylinder
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a drilling constant head water injection test device, which comprises a sleeve, a first graduated cylinder and a second graduated cylinder, wherein the lower end of the sleeve is connected with a drilling sleeve through a thread, the lower part of the first graduated cylinder is provided with a water outlet pipe, a valve is arranged on the pipeline of the water outlet pipe, the bottom of the first graduated cylinder is higher than the top of the sleeve arranged on the drilling sleeve, and the water outlet pipe is inserted into the sleeve; the lateral wall of the upper part of the sleeve is provided with a through hole, the outer side of the through hole is connected with a drain pipe, and the insertion position of the drain pipe is lower than that of the second measuring cylinder of the through hole. The first measuring cylinder is arranged on the outer side of the top of the sleeve through a bracket at the bottom. The sleeve is integrally formed with the water outlet pipe, and the first measuring cylinder is integrally formed with the water outlet pipe. The utility model discloses can realize that the water level is stable unchangeable, effectively improve experimental precision, need not real-time water injection, alleviate operating personnel's work load, avoid causing the test result error because of the human factor.
Description
Technical Field
The utility model belongs to the technical field of hydrogeology reconnaissance and environmental monitoring and specifically relates to a drilling constant head water injection test device is related to.
Background
The drilling constant head water injection test is suitable for the soil, silt, sandy soil and sand gravel layers with relatively large permeability or the rock bodies with relatively high water permeability, such as weathered, broken rock bodies, fault broken zones and the like which can not be subjected to a water pressure test.
The test method of water injection for the borehole constant head is to inject clear water into the borehole casing pipe, so that the water level in the borehole casing pipe is higher than the underground water level by a certain height (or to an orifice) and is kept constant, and the injection flow is measured by a flowmeter or a measuring barrel at certain intervals. And calculating the permeability coefficient of the test rock-soil layer by adopting a formula according to the relation curve of the injection flow and the time.
Because the water level elevation needs to be kept unchanged in the drilling constant head water injection test, an operator needs to inject clean water into a drilling sleeve in real time in the general test, and reads the flow at a specified time interval, so that the operation difficulty is high, and the instability of the water level, the reading error of the flow and the like are easily caused.
SUMMERY OF THE UTILITY MODEL
For remedying the not enough of prior art, the utility model provides an easy operation, low cost conveniently carries, can effectively improve experimental precision, alleviates operating personnel's work load, avoids causing the drilling constant head water injection test device of experimental mistake.
In order to solve the technical problem, the utility model discloses a technical scheme is: a drilling constant head water injection test device comprises a sleeve, a first measuring cylinder and a second measuring cylinder, wherein the lower end of the sleeve is connected with a drilling sleeve through threads, the lower part of the first measuring cylinder is provided with a water outlet pipe, a valve is arranged on a pipeline of the water outlet pipe, the bottom of the first measuring cylinder is higher than the top of the sleeve arranged on the drilling sleeve, and the water outlet pipe is inserted into the sleeve; the lateral wall of the upper part of the sleeve is provided with a through hole, the outer side of the through hole is connected with a drain pipe, and the insertion position of the drain pipe is lower than that of the second measuring cylinder of the through hole.
The first measuring cylinder is installed on the outer side of the top of the sleeve through a support at the bottom.
The sleeve is integrally formed with the water discharge pipe, and the first measuring cylinder is integrally formed with the water outlet pipe.
The water outlet pipe and the water drain pipe are both
And (4) shaping.
The beneficial effects of the utility model are that: the water level is stable and unchanged, the test precision is effectively improved, real-time water injection is not needed, the workload of operators is reduced, and test result errors caused by human factors are avoided.
Drawings
Fig. 1 is the structure schematic diagram of the drilling constant head water injection test device of the utility model.
Detailed Description
The technical solution of the present invention will be clearly and completely described with reference to the accompanying drawings; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
As shown in fig. 1, the utility model discloses a drilling constant head water injection test device, including sleeve 1, first graduated flask 2 and second graduated flask 3, the sleeve 1 lower extreme passes through the screw thread to be connected with drilling sleeve 8, the lower part of first graduated flask 2 has outlet pipe 6, is provided with valve 7 on the pipeline of outlet pipe 6, the position of first graduated flask 2 bottom is higher than the sleeve 1 top of installing on drilling sleeve 8 to outlet pipe 6 inserts in sleeve 1; the lateral wall of the upper part of the sleeve 1 is provided with a through hole, the outer side of the through hole is connected with a drain pipe 5, and the insertion position of the drain pipe 5 is lower than that of the second graduated cylinder 3 of the through hole.
Preferably, the first measuring cylinder 2 is mounted on the outside of the top of the sleeve 1 by a bracket 4 at the bottom.
Preferably, the sleeve 1 is formed integrally with the drain pipe 5 and the first measuring cylinder 2 is formed integrally with the outlet pipe 6.
Preferably, the water outlet pipe 6 and the water outlet pipe 5 are both
And (4) shaping.
The utility model discloses a drilling constant head water injection test device makes the water in first graduated flask 2 flow into sleeve 1 and drilling sleeve 8 through flowing automatically, and along with the rising of water level in the sleeve 1, water flows to second graduated flask 3 through the overflow automatically, and the velocity of flow of valve 7 control outlet pipe 6 makes sleeve 1's water level keep the position at the through-hole.
Specifically, the sleeve 8 is already installed in a drill hole in the drilling process, the sleeve 1 is connected to the top of the drill hole sleeve through threads before a water injection test is started (the top end of the drill hole sleeve 8 is generally an internal thread, and the bottom of the sleeve 1 is an external thread), the second measuring cylinder 3 is placed at an outlet of the drain pipe 5 on the outer side of the sleeve 1, the support 4 is placed on the other side of the sleeve 1, the first measuring cylinder 2 is placed at the top of the support 4, the water outlet pipe 6 extends into the sleeve 1, and the lower end of the water outlet pipe 6 is located below a connection position of the drain pipe 5 of the sleeve 1. The clean water is filled into the first measuring cylinder 2, the valve 7 is opened, the clean water flows into the sleeve 1 through the water outlet pipe 6, and the clean water enters the drill hole due to the fact that the bottom of the sleeve 1 is communicated with the drill hole sleeve 8; drilling sleeve pipe internal water flow keeps steady after a period, and the water level is raised gradually in sleeve 1 this moment, and when the water level surpassed drain pipe 5 and sleeve 1 junction, water flowed into second graduated flask 3 through drain pipe 5, can reduce valve 7 this moment and make and have rivers to go out but the flow is not big in drain pipe 5 always, keeps the liquid level steady in the sleeve 1 this moment, can begin the reading. The water level scales of the first measuring cylinder 2 and the second measuring cylinder 3 are read and recorded at the same time at a certain moment, the water level scales of the first measuring cylinder 2 and the second measuring cylinder 3 are read and recorded at the same time after a certain time interval, and the difference between the water levels of the first measuring cylinder 2 and the second measuring cylinder 3 at two moments is the flow rate of the injection drilling in the time interval. In order to increase the data sample size of the test, the test process can also be recorded in real time to obtain the injection flow at each moment.
The above-mentioned embodiments are only used for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, the scope of the present invention should not be limited by the embodiment, that is, all equivalent changes or modifications made by the spirit of the present invention should still fall within the scope of the present invention.
Claims (3)
1. The drilling constant head water injection test device is characterized by comprising a sleeve (1), a first measuring cylinder (2) and a second measuring cylinder (3), wherein the lower end of the sleeve (1) is connected with a drilling sleeve (8) through threads, a water outlet pipe (6) is arranged at the lower part of the first measuring cylinder (2), a valve (7) is arranged on a pipeline of the water outlet pipe (6), the bottom of the first measuring cylinder (2) is higher than the top of the sleeve (1) arranged on the drilling sleeve (8), and the water outlet pipe (6) is inserted into the sleeve (8); the side wall of the upper part of the sleeve (1) is provided with a through hole, the outer side of the through hole is connected with a drain pipe (5), and the insertion position of the drain pipe (5) is lower than that of the second measuring cylinder (3) of the through hole.
2. The test device for constant head water injection in drilling according to claim 1, characterized in that the first measuring cylinder (2) is installed outside the top of the sleeve (1) through a bracket (4) at the bottom.
3. The test device for constant head water injection in a borehole of claim 1, wherein the sleeve (1) is formed integrally with the water outlet pipe (5) and the first graduated cylinder (2) is formed integrally with the water outlet pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222538083.2U CN218766509U (en) | 2022-09-23 | 2022-09-23 | Drilling constant head water injection test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222538083.2U CN218766509U (en) | 2022-09-23 | 2022-09-23 | Drilling constant head water injection test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218766509U true CN218766509U (en) | 2023-03-28 |
Family
ID=85696764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222538083.2U Active CN218766509U (en) | 2022-09-23 | 2022-09-23 | Drilling constant head water injection test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218766509U (en) |
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2022
- 2022-09-23 CN CN202222538083.2U patent/CN218766509U/en active Active
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