CN215804549U - Frozen power monitoring devices of frozen level of subway longwall cup-shaped - Google Patents
Frozen power monitoring devices of frozen level of subway longwall cup-shaped Download PDFInfo
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- CN215804549U CN215804549U CN202122469359.1U CN202122469359U CN215804549U CN 215804549 U CN215804549 U CN 215804549U CN 202122469359 U CN202122469359 U CN 202122469359U CN 215804549 U CN215804549 U CN 215804549U
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- pipe
- force monitoring
- heaving force
- soil pressure
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims abstract description 87
- 239000002689 soil Substances 0.000 claims abstract description 73
- 230000008014 freezing Effects 0.000 claims abstract description 48
- 238000007710 freezing Methods 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 9
- 238000011161 development Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000009434 installation Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a frost heaving force monitoring device for a long-wall cup-shaped horizontal freezing of a subway, which comprises a plurality of frost heaving force monitoring pipes, wherein a plurality of soil pressure sensors are arranged in the frost heaving force monitoring pipes, a square pipe is arranged in the frost heaving force monitoring pipes, the frost heaving force monitoring pipes are round pipes, a plurality of through holes are formed in the pipe walls of the frost heaving force monitoring pipes, protruding edge structures are respectively arranged at two ends of the square pipes, one end of each soil pressure sensor is arranged outside one side of each square pipe, the other end of each soil pressure sensor is arranged in each through hole, and each soil pressure sensor does not protrude to the outer side of each frost heaving force monitoring pipe. The utility model has reasonable structural design, and the frost heaving force monitoring is carried out by arranging the frost heaving force detection pipes between two adjacent circles of horizontal freezing pipes and at the outer circle of the horizontal freezing pipe at the outermost circle, so that not only can the frost heaving force outside the freezing range or the stress condition of the engineering structure be monitored, but also the development condition of the frost heaving force inside the freezing circle layer can be monitored, the construction efficiency can be effectively improved, and the operation difficulty can be reduced.
Description
Technical Field
The utility model belongs to the technical field of subway tunnel monitoring, and particularly relates to a frost heaving force monitoring device for subway long-wall cup-shaped horizontal freezing.
Background
The freezing method is used as an important measure for stratum reinforcement, is widely applied to urban rail transit engineering, and has a remarkable reinforcement effect particularly in the construction of connection passages of stratums with large water content, silt and sand and the receiving operation of shield starting. However, the formation temperature is sharply reduced by artificial freezing, huge frost heaving force is generated, bad deformation of surrounding building foundations, tunnel linings and station bottom plates can be undoubtedly caused, and the frost heaving force range and the frost heaving ring space form are clear and important for design of the frost wall form and the arrangement mode and protection of the existing building.
In addition, due to the limitation of urban ground sites, in recent years, a multi-circle horizontal cup type freezing form is adopted, namely, a plurality of circles of horizontal freezing pipes are arranged in a horizontal freezing area of a subway, compared with vertical freezing, the freezing form has few theoretical calculation results of the frost heaving influence range and the frost heaving force, most of the freezing form is a semi-theoretical semi-empirical formula, and the limitation is large; the original structure and state of the damaged rock-soil mass in the indoor soil sample test are difficult to accurately simulate complicated field stress and underground water conditions, and the test precision is limited; in the field frost heaving force test work, element pre-embedding is generally carried out by means of large working faces such as ground connection walls and pipe pieces, or the frost heaving force is replaced by gushing muddy water pressure by arranging pressure relief holes.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the technical problem in the prior art is to provide a frost heaving force monitoring device for the cup-shaped horizontal freezing of a subway long wall, which has reasonable structural design, and can monitor the frost heaving force or the stress condition of an engineering structure outside a freezing range and monitor the development condition of the frost heaving force inside a freezing ring layer by arranging frost heaving force detection pipes between two adjacent circles of horizontal freezing pipes and the outer circle of the horizontal freezing pipe at the outermost circle to monitor the frost heaving force, thereby effectively improving the construction efficiency and reducing the operation difficulty.
In order to solve the technical problems, the utility model adopts the technical scheme that: the utility model provides a frozen power monitoring devices of cup-shaped level of subway longwall which characterized in that: including setting up between two adjacent circles of level freezing pipes and a plurality of frozen power monitoring pipes of the outer lane of the level freezing pipe of outermost circle, install a plurality of soil pressure sensor who are used for monitoring stratum frozen power in the frozen power monitoring pipe, the intraductal side's pipe that supplies soil pressure sensor installation that is provided with of frozen power monitoring, frozen power monitoring pipe is the through-hole that a plurality of soil pressure sensor passed for offering on pipe and its pipe wall, the both ends of side's pipe are provided with one respectively and are followed the structure with the protruding of the inner wall welded fastening of frozen power monitoring pipe, one side outside at side's pipe is installed to soil pressure sensor's one end, soil pressure sensor's the other end is arranged in frozen power monitoring pipe's through-hole, soil pressure sensor does not bulge to the outside of frozen power monitoring pipe.
The frozen power monitoring devices of foretell subway longwall cup-shaped level which characterized in that: the length of square pipe is less than the length of frozen power monitoring pipe, frozen power monitoring pipe and square pipe all are the level and lay, square inscription is in frozen power monitoring pipe, square pipe and frozen power monitoring pipe welding.
The frozen power monitoring devices of foretell subway longwall cup-shaped level which characterized in that: the convex edge structure comprises four arc convex edges which are respectively arranged on the periphery of the square tube.
The frozen power monitoring devices of foretell subway longwall cup-shaped level which characterized in that: and the convex edge at one end of the square pipe is structurally provided with a through hole for a measuring lead of the soil pressure sensor to pass through.
The frozen power monitoring devices of foretell subway longwall cup-shaped level which characterized in that: four soil pressure sensors are mounted on the frost heaving force monitoring pipe, and the distances from the soil pressure sensors to the diaphragm wall are different.
The frozen power monitoring devices of foretell subway longwall cup-shaped level which characterized in that: the soil pressure sensor is a soil pressure box and is connected with the strain data acquisition instrument.
The frozen power monitoring devices of foretell subway longwall cup-shaped level which characterized in that: a sealing layer is arranged between the soil pressure sensor and the wall of the through hole in the frost heaving force monitoring pipe, and a waterproof layer is arranged on the outer side of the soil pressure sensor.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, one or more frost heaving force monitoring pipes are arranged between two adjacent circles of horizontal freezing pipes and on the outer ring of the horizontal freezing pipe at the outermost ring, so that not only can the frost heaving force or engineering structure stress condition outside the freezing range be monitored, but also the development condition of the frost heaving force inside the freezing ring layer can be monitored.
2. According to the utility model, the soil pressure sensor is arranged in the frost heaving force monitoring pipe through the square pipe, and meanwhile, the frost heaving force monitoring pipe is provided with the through holes for the soil pressure sensor to pass through, so that the soil pressure sensor is arranged in the frost heaving force monitoring pipe, no hole expansion is needed, the coordination between monitoring operation and normal construction operation can be ensured, the loss rate of the soil pressure sensor is greatly reduced, the phenomenon of water burst and sand gushing caused by monitoring operation is effectively avoided, and the construction progress is further ensured not to be influenced.
In conclusion, the utility model has reasonable structural design, and frost heaving force monitoring is carried out by arranging the frost heaving force detection pipes between two adjacent circles of horizontal freezing pipes and at the outer ring of the outermost horizontal freezing pipe, so that not only can the frost heaving force or engineering structure stress condition outside a freezing range be monitored, but also the development condition of the frost heaving force inside a freezing ring layer can be monitored, the construction efficiency can be effectively improved, the operation difficulty is reduced, and the phenomenon of water burst and sand gushing caused by monitoring work can be effectively avoided.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic diagram of the layout position of the frost heaving force monitoring pipe of the present invention.
Fig. 3 is a schematic view of an installation structure of the soil pressure sensor of the present invention.
FIG. 4 is a schematic view showing the connection relationship between the square pipe and the frost heaving force monitoring pipe according to the present invention.
Description of reference numerals:
1-horizontal freezing tube; 2-a frost heaving force monitoring pipe; 3, square tube;
3-1-arc convex edge; 4-a soil pressure sensor; 4-1 — measuring wire;
5-diaphragm wall; and 6, acquiring strain data.
Detailed Description
As shown in fig. 1 to 4, the utility model comprises a plurality of frost heaving force monitoring pipes 2, at least one frost heaving force monitoring pipe 2 is arranged between two adjacent circles of horizontal freezing pipes 1 and on the outer ring of the outermost horizontal freezing pipe 1, a plurality of soil pressure sensors 4 for monitoring formation frost heaving force are arranged in the frost heaving force monitoring pipes 2, the soil pressure sensors 4 are all positioned in the cup bottom freezing area of the cup-shaped wall of the long-walled cup-shaped frost wall, a square pipe 3 for mounting the soil pressure sensors 4 is arranged in the frost heaving force monitoring pipes 2, the frost heaving force monitoring pipes 2 are round pipes and are provided with a plurality of through holes for the soil pressure sensors 4 to pass through, two ends of the square pipe 3 are respectively provided with a protruding edge structure welded and fixed with the inner wall of the frost heaving force monitoring pipes 2, one end of the soil pressure sensor 4 is arranged outside one side of the square pipe 3, the other end of the soil pressure sensor 4 is arranged in the through hole of the frost heaving force monitoring pipes 2, the soil pressure sensor 4 does not protrude to the outside of the frost heaving force monitoring pipe 2.
During the in-service use, through installing soil pressure sensor 4 on frozen expansive force monitoring pipe 2, only need carry out burying underground of pipeline, can accomplish soil pressure sensor 4's installation simultaneously, can effectively improve the efficiency of construction, need not carry out the component with the help of great operation faces such as ground even wall, section of jurisdiction and pre-buried, the operation degree of difficulty reduces greatly, applicable frozen expansive force monitoring in the form of many circles horizontal cup type.
It should be noted that, one frost heaving force monitoring pipe 2 is arranged between the innermost ring horizontal freezing pipe 1 and the second inner ring horizontal freezing pipe 1, and between the second inner ring horizontal freezing pipe 1 and the second outer ring horizontal freezing pipe 1, and two frost heaving force monitoring pipes 2 are arranged between the second outer ring horizontal freezing pipe 1 and the outermost ring horizontal freezing pipe 1, and between the outermost ring horizontal freezing pipe 1 and the outer ring of the outermost ring horizontal freezing pipe 1, so that not only can the frost heaving force or the engineering structure stress condition outside the freezing range be monitored, but also the development condition of the frost heaving force inside the freezing ring layer can be monitored.
During specific implementation, the plurality of soil pressure sensors 4 are arranged in the cup bottom freezing area of the long-wall cup-shaped frozen soil wall, so that the accuracy and the reliability of the frost heaving force monitoring result can be effectively improved.
During the in-service use, soil pressure sensor 4 installs in one side of square pipe 3, install soil pressure sensor 4 in frozen expansive force monitoring pipe 2 through square pipe 3, set up the through-hole that a plurality of confession soil pressure sensor 4 passed on frozen expansive force monitoring pipe 2 simultaneously, make soil pressure sensor 4 arrange frozen expansive force monitoring pipe 2 in, need not ream, can guarantee the harmony of monitoring operation and normal construction operation, make soil pressure sensor 4 loss rate greatly reduced simultaneously, effectively avoid monitoring work to cause gushing water sand gushing phenomenon, and then ensure that the construction progress is not influenced.
In this embodiment, the frost heaving force monitoring pipe 2 is a 20# low carbon steel seamless steel pipe with a pipe diameter of phi 89mm and a pipe wall thickness of 8 mm.
During specific implementation, when the frost heaving force monitoring pipe 2 is buried, the pipe following drilling is carried out in a plurality of unit pipe sections, and the plurality of unit pipe sections are connected through threads and welded.
It should be noted that, by providing a protruding edge structure at each of the two ends of the square pipe 3, the water tightness inside the frost heaving force monitoring pipe 2 can be ensured, and water leakage at the installation position of the soil pressure sensor 4 is avoided, and then the soil pressure sensor enters the frost heaving force monitoring pipe 2.
In this embodiment, the length of square pipe 3 is less than the length of frost heaving force monitoring pipe 2, frost heaving force monitoring pipe 2 and square pipe 3 all are the level and lay, square pipe 3 inscribes in frost heaving force monitoring pipe 2, square pipe 3 and frost heaving force monitoring pipe 2 welding.
In actual use, four edges of the square tube 3 are welded and fixed with the frost heaving force monitoring tube 2, and the square tube 3 is installed on the frost heaving force monitoring tube 2 and is positioned in a segment of the cup bottom freezing area of the long-wall cup-shaped frozen soil wall.
In this embodiment, the convex edge structure includes four arc convex edges 3-1 respectively disposed around the square tube 3.
When the pipe is actually used, the arc-shaped convex edge 3-1 is formed by enclosing a straight line section and an arc section, the straight line section of the arc-shaped convex edge 3-1 is fixedly welded with the square pipe 3, and the arc section of the arc-shaped convex edge 3-1 is fixedly welded with the frost heaving force monitoring pipe 2.
In this embodiment, the protruding edge at one end of the square pipe 3 is structurally provided with a through hole for the measurement lead 4-1 of the soil pressure sensor 4 to pass through.
When the device is in actual use, the side wall of the hoop pipe 3 is provided with a through hole for the measurement lead 4-1 of the soil pressure sensor 4 to pass through, so that the measurement lead 4-1 of the soil pressure sensor 4 can be ensured to be arranged in the temperature measuring pipe 2, and the soil pressure sensor 4 is prevented from being damaged in the using process; the wall of the perforation and the measuring lead 4-1 are fixed by waterproof latex.
In specific implementation, the two oppositely-arranged arc-shaped convex edges 3-1 at one end of the square pipe 3 close to the diaphragm wall 5 are respectively provided with one through hole.
In this embodiment, four soil pressure sensors 4 are installed on the frost heaving force monitoring pipe 2, and the distances from the soil pressure sensors 4 to the diaphragm wall 5 are different.
When the device is actually used, the length of the frost heaving force monitoring pipe 2 is 2m, and the distances from the four soil pressure sensors 4 to the diaphragm wall 5 are 0.2m, 0.6m, 1m and 1.4m respectively.
In this embodiment, the soil pressure sensor 4 is a soil pressure cell and is connected to the strain data collector 6.
During the in-service use, the data acquisition appearance 6 that meets an emergency is connected and is arranged in subaerial, when adopting data acquisition appearance 6 that meets an emergency to carry out soil pressure data acquisition, gathers once at least every day in principle.
In this embodiment, a sealing layer is disposed between the soil pressure sensor 4 and the inner wall of the hoop pipe 3, and a waterproof layer is disposed outside the soil pressure sensor 4.
During the in-service use, the sealing layer is for filling the waterproof latex between the inner wall of soil pressure sensor 4 and hoop pipe 3, can fix soil pressure sensor 4, avoids taking place the percolating water simultaneously, and the waterproof layer can prevent that soil pressure sensor 4 from soaking the damage for pasting the waterproof sticky tape in the soil pressure sensor 4 outside.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides a frozen power monitoring devices of cup-shaped level of subway longwall which characterized in that: the frost heaving force monitoring pipe comprises a plurality of frost heaving force monitoring pipes (2) which are arranged between two adjacent circles of horizontal freezing pipes (1) and on the outer circle of the outermost circle of horizontal freezing pipe (1), a plurality of soil pressure sensors (4) used for monitoring formation frost heaving force are arranged in the frost heaving force monitoring pipes (2), a square pipe (3) used for installing the soil pressure sensors (4) is arranged in the frost heaving force monitoring pipes (2), the frost heaving force monitoring pipes (2) are round pipes, through holes for the soil pressure sensors (4) to pass through are formed in the pipe walls of the frost heaving force monitoring pipes, a convex edge structure welded and fixed with the inner walls of the frost heaving force monitoring pipes (2) is arranged at two ends of each square pipe (3), one end of each soil pressure sensor (4) is arranged outside one side of each square pipe (3), the other end of each soil pressure sensor (4) is arranged in the through hole of each frost heaving force monitoring pipe (2), the soil pressure sensor (4) does not protrude to the outer side of the frost heaving force monitoring pipe (2).
2. A frost heave force monitoring apparatus for a cup-shaped horizontal freeze of a subway as claimed in claim 1, wherein: the length of square pipe (3) is less than the length of frost heaving force monitoring pipe (2), frost heaving force monitoring pipe (2) and square pipe (3) all are the level and lay, square pipe (3) inscription is in frost heaving force monitoring pipe (2), square pipe (3) and frost heaving force monitoring pipe (2) welding.
3. A frost heave force monitoring apparatus for horizontal freezing of a subway long-wall cup according to claim 2, wherein: the convex edge structure comprises four arc convex edges (3-1) which are respectively arranged on the periphery of the square pipe (3).
4. A frost heave force monitoring apparatus for a cup-shaped horizontal freeze of a subway as claimed in claim 1, wherein: the protruding edge at one end of the square pipe (3) is structurally provided with a through hole for a measuring lead (4-1) of the soil pressure sensor (4) to pass through.
5. A frost heave force monitoring apparatus for a cup-shaped horizontal freeze of a subway as claimed in claim 1, wherein: four soil pressure sensors (4) are installed on the frost heaving force monitoring pipe (2), and the distances from the soil pressure sensors (4) to the diaphragm wall (5) are different.
6. A frost heave force monitoring apparatus for a cup-shaped horizontal freeze of a subway as claimed in claim 1, wherein: the soil pressure sensor (4) is a soil pressure box and is connected with the strain data acquisition instrument (6).
7. A frost heave force monitoring apparatus for a cup-shaped horizontal freeze of a subway as claimed in claim 1, wherein: and a sealing layer is arranged between the soil pressure sensor (4) and the wall of the through hole in the frost heaving force monitoring pipe (2), and a waterproof layer is arranged on the outer side of the soil pressure sensor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122469359.1U CN215804549U (en) | 2021-10-13 | 2021-10-13 | Frozen power monitoring devices of frozen level of subway longwall cup-shaped |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122469359.1U CN215804549U (en) | 2021-10-13 | 2021-10-13 | Frozen power monitoring devices of frozen level of subway longwall cup-shaped |
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| Publication Number | Publication Date |
|---|---|
| CN215804549U true CN215804549U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122469359.1U Active CN215804549U (en) | 2021-10-13 | 2021-10-13 | Frozen power monitoring devices of frozen level of subway longwall cup-shaped |
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| Country | Link |
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| CN (1) | CN215804549U (en) |
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2021
- 2021-10-13 CN CN202122469359.1U patent/CN215804549U/en active Active
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