CN217233502U - Proposed tunnel external water pressure monitoring structure based on reconnaissance stage - Google Patents
Proposed tunnel external water pressure monitoring structure based on reconnaissance stage Download PDFInfo
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- CN217233502U CN217233502U CN202123298463.5U CN202123298463U CN217233502U CN 217233502 U CN217233502 U CN 217233502U CN 202123298463 U CN202123298463 U CN 202123298463U CN 217233502 U CN217233502 U CN 217233502U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model relates to a geological survey technical field, in particular to a tunnel external water pressure monitoring structure based on a survey stage, which comprises a vertical survey hole with the lower end extending to the periphery of the section of a tunnel to be built, a vertical installation pipe is arranged in the survey hole, the lower end of the installation pipe extends to the lower end in the survey hole, a detection probe is arranged at the lower end of the inner hole of the installation pipe, the upper end of the detection probe is provided with an upward wire and penetrates out of the upper end of the installation pipe to extend to the outer part of the upper end of the survey hole to be connected with a data acquisition instrument; an expansion layer is further arranged on the outer circumferential surface of the lower end of the installation pipe, so that the expansion layer can expand after contacting with water and is attached to and supported on the inner circumferential wall of the exploration hole; and the outer circumference of the mounting pipe and the position below the expansion layer are provided with water permeable holes which penetrate through the wall thickness direction; the utility model has the advantages of can conveniently overhaul more, the used repeatedly of realization monitoring component that can be better is with reduce cost.
Description
Technical Field
The utility model relates to a geological survey technical field especially relates to a propose tunnel outer water pressure monitoring structure based on reconnaissance stage.
Background
The tunnel construction is a reasonable construction method from the viewpoint of rock mechanics, and is a new engineering construction method formed by adopting a system formed by a shotcrete technology, a monitoring measurement technology and the like and a rock mechanics theory. Before tunnel construction, the water pressure outside the tunnel around the end face of the proposed tunnel is generally required to be surveyed and monitored so as to conveniently analyze and formulate a specific tunnel construction scheme through the obtained water pressure value, thereby improving the feasibility and the safety of construction.
The existing monitoring and calculating method for the water pressure outside the tunnel can be classified into the following five methods: a reduction coefficient method, a theoretical analytical method, an analytical numerical method, a hydrological geochemistry method, and a seepage theory analysis method. The species research method is based on empirical summary and theoretical research calculation, and the obtained tunnel external water pressure value always has a certain deviation from the actual condition, so that the tunnel construction scheme made by the tunnel external water pressure analysis obtained by the method is poor in reliability. Therefore, the applicant designs a device for measuring the water pressure outside the tunnel in the drilled hole based on the exploration stage, and the device is characterized by comprising a vertical exploration hole of which the lower end extends to the periphery of the section of the tunnel to be built, wherein the lower end of the exploration hole is provided with a box body of a flat cylindrical structure, a detection probe is arranged below the box body, the upper end of the detection probe is provided with an upward lead, and the upward lead penetrates out of a yielding hole in the middle of the box body and extends to the outside of the upper end of the exploration hole to be connected with a data acquisition instrument; the box body is provided with a filling injection hole and can be filled with filling materials to form a sealing structure; the upper end of the box body is also connected with a bearing rope, and the upper end of the bearing rope extends upwards and is connected with the upper end of the exploration hole; an expansion layer is arranged on the outer circumferential surface of the box body, so that the expansion layer can expand after contacting with water and is attached to and supported on the inner circumferential wall of the exploration hole; and concrete is also injected into the upper end of the box body in the exploration hole.
The above-described device, however, may have the following disadvantages when in use: 1, the detection probe has fault risks in the using process, and is difficult to maintain and replace once a fault occurs; 2, the repeated utilization of the detection probe is difficult to realize, so that the investment cost is high each time; 3 the structure is complicated relatively, and the input and the construction cost are higher earlier stage, still cause the harm to the wire of connecting on the test probe easily in the work progress.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that how to provide a structure is simpler, can conveniently overhaul more, and the reuse of realization monitoring member that can be better is based on reconnaissance stage and plans to build tunnel outer water pressure monitoring structure for reduce cost.
In order to achieve the purpose, the utility model provides a plan tunnel external water pressure monitoring structure based on reconnaissance stage, which is characterized in that the structure comprises a vertical reconnaissance hole with the lower end extending to the periphery of the section of the planned tunnel, a vertical installation pipe is arranged in the reconnaissance hole, the lower end of the installation pipe extends to the lower end in the reconnaissance hole, a detection probe is arranged at the lower end in the installation pipe, the upper end of the detection probe is provided with an upward wire and penetrates out of the upper end of the installation pipe to extend to the outside of the upper end of the reconnaissance hole to be connected with a data acquisition instrument; an expansion layer is further arranged on the outer circumferential surface of the lower end of the installation pipe, so that the expansion layer can expand after contacting with water and is attached to and supported on the inner circumferential wall of the exploration hole; and the outer circumference of the mounting pipe and the position below the expansion layer are provided with water permeable holes which penetrate through the wall thickness direction; and concrete is also poured over the expanding layer in the exploration hole.
Thus, when the proposed tunnel external water pressure monitoring structure based on the exploration stage is constructed, a vertical exploration hole is obtained in the periphery of the section of the proposed tunnel, an expansion layer is arranged on the outer circumferential surface of the lower end of the installation pipe, the installation pipe vertically extends downwards into the exploration hole, the expansion layer at the lower end of the installation rod can expand after contacting with water and is attached to and supported on the inner circumferential wall of the exploration hole, then concrete is injected above the expansion layer in the exploration hole, after the concrete has certain strength, a detection probe extends downwards from the upper end of the installation pipe, and the detection probe is positioned below the expansion layer at the lower end of the inner hole of the installation pipe; and then connecting a lead connected to the upper end of the detection probe with a data acquisition instrument. Water in the soil body can enter the mounting pipe from the permeable hole arranged at the lower end of the mounting pipe, and the detection probe can detect water level information and can conveniently follow-up obtain the pressure of water outside the proposed tunnel through the water level information so as to facilitate monitoring before construction. The structure can be used for conveniently maintaining and replacing the detection probe, and can better treat faults; and the structural design is simpler and more reasonable. The construction input cost is lower, and the detection probe can also realize reuse, reaches the purpose of reduce cost. And the lead of the detection probe can not be damaged, so that the detection probe is more reliable in use.
Preferably, the expansion layer comprises one or more layers of water-stop adhesive tapes which are wrapped on the outer circumferential surface of the installation pipe.
Therefore, the expansion layer adopts one or more layers of water-stop adhesive tapes which can expand when meeting water, a supporting and sealing structure is formed between the outer circumferential surface of the installation pipe and the inner circumferential wall of the exploration hole, and concrete can be conveniently poured above the installation pipe in a follow-up manner.
Preferably, the upper end of the installation pipe extends to the position above the upper end face of the exploration hole.
Like this for installation pipe upper end extends to reconnaissance hole up end top, conveniently pours the concrete, and the avoidance concrete that can be better drops to in the installation pipe.
Preferably, an end cover plate is arranged at the lower end of the mounting pipe, and a through hole is formed in the end cover plate.
Like this, through set up the end cover board at the installation pipe lower extreme, set up the through-hole on the apron, can be better protect test probe to the through-hole that sets up on the end cover board can make things convenient for water to get into from the lower extreme.
As optimization, the mounting pipe comprises a lower mounting pipe section at the lower end and an upper mounting pipe section which is fixedly connected with the upper end of the lower mounting pipe section; and the upper section of the installation pipe and the lower section of the installation pipe are designed to be mutually independent, and the water permeable holes are arranged on the lower section of the installation pipe.
Therefore, the upper section of the installation pipe and the lower section of the installation pipe can be connected and fixed together after being processed respectively, so that the installation pipe is more convenient to process and manufacture.
Preferably, the upper section of the installation pipe is fixed at the upper end of the lower section of the installation pipe through welding connection.
In this way, the connection between the two is simpler and more reliable. Furthermore, the lower section of the installation pipe is fixed at the upper end of the lower section of the installation pipe through threaded connection.
And optimally, the exploration holes extend to the two sides or the upper part of the section of the proposed tunnel.
Thus, the layout of the exploration holes is more reasonable.
Preferably, the detection probe is a water level meter.
Like this, test probe is the fluviograph, can detect and obtain water level information, can make things convenient for follow-up according to water level information obtain the pressure value more.
In summary, the above structure has the following advantages: 1, the detection probe can be taken out from the installation pipe more conveniently to complete maintenance and replacement, and the whole structure can better cope with risks; 2, the detection probe can be taken out, so that the repeated utilization can be completed, and the use cost is reduced; 3 the structure is simpler, and earlier stage input and construction cost are lower, in the work progress, can be better avoid causing the injury to the wire.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a partially enlarged schematic view of a position a in fig. 1.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, wherein it is noted that, in the description of the invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular manner, and therefore should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in figures 1 and 2, the proposed tunnel external water pressure monitoring structure based on the investigation stage comprises a vertical investigation hole 2, the lower end of the investigation hole extends to the periphery of the section of a proposed tunnel 1, a vertical installation pipe 3 is arranged in the investigation hole, the lower end of the installation pipe extends to the lower end of the interior of the investigation hole, a detection probe 4 is arranged at the lower end of the inner hole of the installation pipe, an upward lead 5 is arranged at the upper end of the detection probe, penetrates out of the upper end of the installation pipe and extends to the exterior of the upper end of the investigation hole to be connected with a data acquisition instrument 6; an expansion layer is further arranged on the outer circumferential surface of the lower end of the installation pipe, so that the expansion layer 7 can expand after contacting with water and is attached to and supported on the inner circumferential wall of the exploration hole; a water permeable hole 8 which penetrates through the wall thickness direction is arranged on the outer circumferential surface of the mounting pipe and below the expansion layer; and concrete 9 is also poured over the expansion layer in the exploration hole.
Thus, when the proposed tunnel external water pressure monitoring structure based on the investigation stage is constructed, a vertical investigation hole is obtained at the periphery of the section of the proposed tunnel through construction, an expansion layer is arranged on the outer circumferential surface of the lower end of the installation pipe, the installation pipe vertically extends downwards into the investigation hole, so that the expansion layer at the lower end of the installation rod can expand and is attached to and supported on the circumferential wall in the investigation hole after contacting with water, then concrete is injected above the expansion layer in the investigation hole, after the concrete has certain strength, a detection probe extends downwards from the upper end of the installation pipe, and the detection probe is positioned below the expansion layer at the lower end of the inner hole of the installation pipe; and then connecting a lead connected to the upper end of the detection probe with a data acquisition instrument. The water in the soil body can enter the mounting pipe from the permeable hole arranged at the lower end of the mounting pipe, and the detection probe can detect water level information and can facilitate the follow-up obtaining of the water pressure outside the proposed tunnel through the water level information, so that the monitoring before construction is facilitated. The structure can be used for conveniently maintaining and replacing the detection probe, and can better treat faults; and the structural design is simpler and more reasonable. The construction input cost is lower, and the detection probe can also realize reuse, reaches the purpose of reduce cost. And the lead of the detection probe cannot be damaged, so that the detection probe is more reliable in use.
In this embodiment, the expansion layer 7 includes one or more water-stop tapes covering the outer circumferential surface of the installation pipe.
Therefore, the expansion layer adopts one or more layers of water-stop adhesive tapes which can expand when meeting water, a supporting and sealing structure is formed between the outer circumferential surface of the installation pipe and the inner circumferential wall of the exploration hole, and concrete can be conveniently poured above the installation pipe in the follow-up process.
In this embodiment, the upper end of the installation pipe 3 extends to above the upper end surface of the exploration hole.
Like this for installation pipe upper end extends to reconnaissance hole up end top, conveniently pours the concrete, and the avoidance concrete that can be better drops to in the installation pipe.
In this embodiment, an end cover plate 10 is provided at the lower end of the mounting pipe, and a through hole 11 is provided on the end cover plate.
Like this, through setting up the end cover board at the installation pipe lower extreme, set up the through-hole on the apron, can be better protect test probe to the through-hole that sets up on the end cover board can make things convenient for water to get into from the lower extreme.
In the embodiment, the mounting pipe comprises a lower mounting pipe section 12 at the lower end and an upper mounting pipe section 13 which is fixedly connected with the upper end of the lower mounting pipe section; and the upper section of the installation pipe and the lower section of the installation pipe are designed to be mutually independent, and the water permeable holes are arranged on the lower section of the installation pipe.
Therefore, the upper section of the installation pipe and the lower section of the installation pipe can be connected and fixed together after being processed respectively, so that the installation pipe is more convenient to process and manufacture.
In the embodiment, the upper section of the installation pipe is fixed at the upper end of the lower section of the installation pipe through welding connection.
In this way, the connection between the two is simpler and more reliable. Furthermore, the lower section of the installation pipe is fixed at the upper end of the lower section of the installation pipe through threaded connection.
In the present embodiment, the exploration holes extend to two sides or above the section of the tunnel to be built.
Thus, the layout of the exploration holes is more reasonable.
In this embodiment, the detection probe 4 is a water level gauge.
Like this, the test probe is the fluviograph, can detect and obtain water level information, can make things convenient for follow-up pressure value according to water level information more.
Specifically, when concreting, be equipped with pouring pipe 14 at the outside cover of installation pipe, be provided with apron 16 in order to avoid concrete to drop to its inside from the installation pipe upper end in the installation pipe upper end, the concrete discharge end that pouring pipe upper end and outside concrete placement equipment 15 (grouting pump) have links to each other, when concreting, upwards extracts the pouring pipe gradually. And after the concrete pouring is finished, taking down the cover plate, and putting the detection probe into the mounting pipe from the upper end of the mounting pipe.
In summary, the above structure has the following advantages: 1, the detection probe can be taken out from the installation pipe more conveniently to complete maintenance and replacement, and the whole structure can better cope with risks; 2, the detection probe can be taken out, so that the repeated utilization can be completed, and the use cost is reduced; 3 the structure is simpler, and input and construction cost are lower in earlier stage, in the work progress, can be better avoid causing the injury to the wire.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the principles of this invention without the use of inventive faculty. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. A proposed tunnel external water pressure monitoring structure based on an investigation stage is characterized by comprising a vertical investigation hole, wherein the lower end of the investigation hole extends to the periphery of the section of a proposed tunnel, a vertical installation pipe is arranged in the investigation hole, the lower end of the installation pipe extends to the lower end of the interior of the investigation hole, a detection probe is arranged at the lower end of the inner hole of the installation pipe, an upward lead is arranged at the upper end of the detection probe, penetrates out of the upper end of the installation pipe and extends to the exterior of the upper end of the investigation hole, and the detection probe is connected with a data acquisition instrument; an expansion layer is further arranged on the outer circumferential surface of the lower end of the installation pipe, so that the expansion layer can expand after contacting with water and is attached to and supported on the inner circumferential wall of the exploration hole; a water permeable hole penetrating the wall thickness direction is arranged on the outer circumferential surface of the mounting pipe and below the expansion layer; and concrete is also poured over the expanding layer in the exploration hole.
2. The proposed structure for monitoring the water pressure outside the tunnel based on the exploration phase as claimed in claim 1, wherein: the expansion layer comprises one or more layers of water-stop adhesive tapes which are coated and arranged on the outer circumferential surface of the installation pipe.
3. The proposed structure for monitoring water pressure outside tunnel based on reconnaissance phase as claimed in claim 1, wherein: the upper end of the installation pipe extends to the upper end face of the exploration hole.
4. The proposed structure for monitoring the water pressure outside the tunnel based on the exploration phase as claimed in claim 1, wherein: an end cover plate is arranged at the lower end of the installation pipe, and a through hole is formed in the end cover plate.
5. The proposed structure for monitoring the water pressure outside the tunnel based on the exploration phase as claimed in claim 1, wherein: the mounting pipe comprises a lower mounting pipe section at the lower end and an upper mounting pipe section which is fixedly connected with the upper end of the lower mounting pipe section; and the upper section of the installation pipe and the lower section of the installation pipe are designed to be mutually independent, and the water permeable holes are arranged on the lower section of the installation pipe.
6. The proposed structure for monitoring the water pressure outside the tunnel based on the exploration phase as claimed in claim 5, wherein: the upper section of the installation pipe is fixed at the upper end of the lower section of the installation pipe through welding connection.
7. The proposed structure for monitoring the water pressure outside the tunnel based on the exploration phase as claimed in claim 1, wherein: the exploration holes extend to the two sides or the upper part of the section of the proposed tunnel.
8. The proposed structure for monitoring the water pressure outside the tunnel based on the exploration phase as claimed in claim 1, wherein: the detection probe is a water level meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123298463.5U CN217233502U (en) | 2021-12-25 | 2021-12-25 | Proposed tunnel external water pressure monitoring structure based on reconnaissance stage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123298463.5U CN217233502U (en) | 2021-12-25 | 2021-12-25 | Proposed tunnel external water pressure monitoring structure based on reconnaissance stage |
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| Publication Number | Publication Date |
|---|---|
| CN217233502U true CN217233502U (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123298463.5U Active CN217233502U (en) | 2021-12-25 | 2021-12-25 | Proposed tunnel external water pressure monitoring structure based on reconnaissance stage |
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| CN (1) | CN217233502U (en) |
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2021
- 2021-12-25 CN CN202123298463.5U patent/CN217233502U/en active Active
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