CN212058718U - Existing tunnel simulation monitoring devices of double-track tunnel excavation - Google Patents
Existing tunnel simulation monitoring devices of double-track tunnel excavation Download PDFInfo
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- CN212058718U CN212058718U CN202021049943.0U CN202021049943U CN212058718U CN 212058718 U CN212058718 U CN 212058718U CN 202021049943 U CN202021049943 U CN 202021049943U CN 212058718 U CN212058718 U CN 212058718U
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Abstract
The utility model relates to a double-line tunnel technical field specifically is existing tunnel simulation monitoring devices of double-line tunnel excavation, including mold box, model tunnel section of jurisdiction, foil gage, soil pressure cell and dead lever, equidistant model tunnel section of jurisdiction has all been buried underground to one side of mold box inside, and the central point on model tunnel section of jurisdiction surface department bonds and has the soil pressure cell, the model tunnel section of jurisdiction surface in the soil pressure cell outside has solid fixed ring, the model tunnel section of jurisdiction surface of soil pressure cell one side all bonds and has the foil gage, the inboard mold box surface mounting of model tunnel section of jurisdiction has the dead lever, and the equidistant adjustment tank has all been seted up on the surface of dead lever. The utility model discloses not only improved the degree of convenience when simulation monitoring devices uses, the phenomenon that drops of taking place soil pressure cell when having avoided simulation monitoring devices to use, the incline phenomenon of taking place ejection equipment when having avoided simulation monitoring devices to use moreover.
Description
Technical Field
The utility model relates to a double-line tunnel technical field specifically is existing tunnel simulation monitoring devices of double-line tunnel excavation.
Background
With the rapid development of urban infrastructure construction in China in recent years, underground rail transit gradually becomes an important component of the existing urban traffic due to the characteristics of environmental protection, high efficiency and economy, and is limited by objective conditions in developed cities with complex underground rail transit systems and often faces the problem of two-wire tunnel excavation construction, so people usually simulate monitoring through a simulation monitoring device.
The analog monitoring devices on the market are various and can basically meet the use requirements of people, but certain problems still exist, and the specific problems include the following points:
1. the traditional analog monitoring device is generally complicated in monitoring during use, so that the convenience degree of the analog monitoring device during working is seriously influenced;
2. when the traditional analog monitoring device is used, the fixation of a general soil pressure cell is loose, so that the phenomenon that the soil pressure cell falls off when the analog monitoring device works is easily caused;
3. when the traditional analog monitoring device is used, the limit function of the ejection equipment is rarely set, so that the deflection phenomenon of the ejection equipment is easily caused when the analog monitoring device works.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an existing tunnel simulation monitoring devices of double-track tunnel excavation to the degree of convenience that proposes simulation monitoring devices during operation among the solution above-mentioned background art is low, takes place the phenomenon that drops of soil pressure cell, and takes place the problem of the incline phenomenon of ejection equipment.
In order to achieve the above object, the utility model provides a following technical scheme: the device for simulating and monitoring the existing tunnel in the double-line tunnel excavation comprises a model box, a model tunnel segment, a strain gauge, a soil pressure cell and a fixed rod, model tunnel segments with equal intervals are embedded at one side of the interior of the model box, and the interior of one side of the model tunnel segments is connected with a fixing bolt through a thread, one end of the fixing bolt penetrates through the model tunnel segment and is in threaded connection with the surface of the adjacent model tunnel segment, a soil pressure cell is bonded at the central position of the surface of the model tunnel segment, a fixing ring is fixed on the surface of the model tunnel segment outside the soil pressure box, strain gauges are adhered on the surface of the model tunnel segment on one side of the soil pressure box, a fixing rod is fixed on the surface of the model box inside the model tunnel segment, and the surface of the fixed rod is provided with adjusting grooves at equal intervals, and the surface of the model box is fixed with a first limiting frame.
Preferably, the surface of the mold box on one side of the first limiting frame is provided with a limiting groove, a second limiting frame is arranged in the limiting groove, and rollers at equal intervals are hinged in the second limiting frame and the first limiting frame.
Preferably, the surface of the second limiting frame on one side of the roller is in threaded connection with a fixing screw, the surface of one end of the fixing screw penetrates through the second limiting frame and is tightly attached to the surface of the limiting groove, and scale marks are embedded in the surface of the model box on one side of the limiting groove.
Preferably, the equidistant arc type groove has all been seted up to solid fixed ring's inside, and the inner wall in arc type groove all installs equidistant adjusting spring, the fixed surface of adjusting spring one end has the arc type piece, and the surface of arc type piece one end closely laminates with the surface of soil pressure cell.
Preferably, a sliding block is arranged on the surface of the fixing rod above the adjusting groove, a roller is arranged on the surface of the bottom of the sliding block, and the roller is located inside the adjusting groove.
Preferably, a displacement sensor is mounted on the surface of the sliding block, a push rod is sleeved on the surface of the fixing rod on one side of the sliding block, the surface of one end of the push rod is fixedly connected with the surface of the sliding block, and the other end of the push rod extends to the outer side of the model box.
Compared with the prior art, the beneficial effects of the utility model are that: the existing tunnel simulation monitoring device for double-line tunnel excavation not only improves the convenience degree of the simulation monitoring device during use, avoids the phenomenon that a soil pressure box falls off when the simulation monitoring device is used, but also avoids the phenomenon that ejection equipment deflects when the simulation monitoring device is used;
1. through the arrangement of the push rod, the fixed rod, the roller and the sliding block, when the pushing equipment works, the push rod is pushed to synchronously move with the pushing equipment at the same speed, so that the pushing equipment drives the sliding block to synchronously move with a newly excavated tunnel model under the combined action of the fixed rod and the roller, and therefore, the displacement sensor monitors the displacement and the deformation of the tunnel segment of the model tunnel in real time, the monitoring convenience of the simulation monitoring device is realized, and the convenience degree of the simulation monitoring device in use is improved;
2. the arc-shaped block in the fixing ring is pushed by the fixing ring, the arc-shaped block, the adjusting spring and the arc-shaped groove, the soil pressure box is bonded on the surface of the model tunnel segment on the inner side of the arc-shaped block, and meanwhile, the arc-shaped block is tightly attached to the surface of the soil pressure box under the action of the adjusting spring in the arc-shaped groove, so that the soil pressure box is reinforced, the reinforcing function of the simulation monitoring device on the soil pressure box is realized, and the falling phenomenon of the soil pressure box is avoided when the simulation monitoring device is used;
3. through being provided with spacing groove, scale mark, the spacing frame of second and roller, through rotatory set screw, make its bottom keep away from the spacing groove, the rethread is surveyed the scale mark and is promoted the spacing frame of second, makes the both sides and the roller surface of ejection device contact each other, and rotatory set screw again makes it fixed the spacing frame of second, has realized the limit function of simulation monitoring device to ejection device to the skew phenomenon of ejection device takes place when having avoided simulation monitoring device to use.
Drawings
Fig. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic view of the enlarged top view section structure of the tunnel segment of the model tunnel of the present invention;
FIG. 3 is a schematic view of the enlarged structure of the model tunnel segment of the present invention;
fig. 4 is an enlarged schematic structural diagram of a in fig. 1 according to the present invention.
In the figure: 1. a model box; 2. a first limit frame; 201. a second limit frame; 3. a roller; 4. a limiting groove; 5. scale lines; 6. a set screw; 7. a model tunnel segment; 8. a fixing ring; 9. fixing the bolt; 10. A strain gauge; 11. a push rod; 12. a roller; 13. a soil pressure cell; 14. fixing the rod; 15. an adjustment groove; 16. a displacement sensor; 17. a slider; 18. an arc-shaped block; 19. an arc-shaped groove; 20. the spring is adjusted.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments, and furthermore, the terms "first", "second", "third", "upper, lower, left, right", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Meanwhile, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electrical connection; can be directly connected with each other, also can be indirectly connected with each other through the intermediary, based on the embodiment in the utility model, all other embodiments that ordinary skilled in the art obtained under the prerequisite of not making creative work all belong to the scope of protection of the utility model.
Referring to fig. 1-4, the present invention provides an embodiment: a simulation monitoring device for existing tunnels during double-line tunnel excavation comprises a model box 1, model tunnel pipe pieces 7, strain gauges 10, soil pressure boxes 13 and fixing rods 14, wherein the model tunnel pipe pieces 7 with equal intervals are buried in one side of the interior of the model box 1, the transverse rigidity and the longitudinal rigidity of each model tunnel pipe piece 7 correspond to tunnels in actual engineering through similarity ratio, fixing bolts 9 are connected to the inner threads of one side of each model tunnel pipe piece 7, one end of each fixing bolt 9 penetrates through each model tunnel pipe piece 7 and is connected with the surface threads of the adjacent model tunnel pipe piece 7, the soil pressure boxes 13 are bonded at the central positions of the surfaces of the model tunnel pipe pieces 7, the types of the soil pressure boxes 13 can adopt TYJ series vibrating string types, fixing rings 8 are fixed on the surfaces of the model tunnel pipe pieces 7 on the outer sides of the soil pressure boxes 13, arc-shaped grooves 19 with equal intervals are formed in the fixing rings 8, the inner walls of the arc-shaped grooves 19 are all provided with the adjusting springs 20 at equal intervals, the surface of one end of each adjusting spring 20 is fixed with an arc-shaped block 18, and the surface of one end of each arc-shaped block 18 is tightly attached to the surface of the soil pressure cell 13 and used for simulating the reinforcing work of the monitoring device on the soil pressure cell 13;
the surface of a model tunnel segment 7 on one side of a soil pressure box 13 is bonded with strain gauges 10, the types of the strain gauges 10 can be KFG series, fixing rods 14 are fixed on the surface of a model box 1 on the inner side of the model tunnel segment 7, the surfaces of the fixing rods 14 are provided with equidistant adjusting grooves 15, sliders 17 are arranged on the surfaces of the fixing rods 14 above the adjusting grooves 15, rollers 12 are arranged on the surfaces of the bottoms of the sliders 17, the rollers 12 are located in the adjusting grooves 15, displacement sensors 16 are arranged on the surfaces of the sliders 17, IL series laser sensors can be selected as the types of the displacement sensors 16, push rods 11 are sleeved on the surfaces of the fixing rods 14 on one sides of the sliders 17, the surfaces of one ends of the push rods 11 are fixedly connected with the surfaces of the sliders 17, and the other ends of the push rods 11 extend to the outer side of the model box 1 and are used;
1 fixed surface of model box on one side of push rod 11 has first spacing frame 2, and first spacing frame 2 keeps away from 1 surface of model box on one side of push rod 11 and has all seted up spacing groove 4, the inside of spacing groove 4 is provided with the spacing frame 201 of second, and the inside of the spacing frame 201 of second and first spacing frame 2 all articulates there is equidistant roller 3, the spacing frame 201 surface threaded connection of second of roller 3 one side has set screw 6, and the surface of the 6 one end of set screw runs through the spacing frame 201 of second and closely laminates with the surface of spacing groove 4, 1 surface mosaic of model box on one side of spacing groove 4 has scale mark 5, be used for the spacing work of simulation monitoring devices to ejection equipment.
The working principle is as follows: when in use, firstly pushing the arc-shaped block 18 in the fixing ring 8, then adhering the soil pressure cell 13 on the surface of the model tunnel segment 7 at the inner side of the arc-shaped block 18, meanwhile, the arc-shaped block 18 is tightly adhered to the surface of the soil pressure cell 13 under the action of the adjusting spring 20 in the arc-shaped groove 19, reinforcing the soil pressure cell 13 to realize the reinforcing function of the simulation monitoring device on the soil pressure cell 13, thereby avoiding the falling phenomenon of the soil pressure cell 13 when the simulation monitoring device is used, then fixing the model tunnel segment 7 by rotating the fixing bolt 9, then placing the ejection device between the rollers 3, then rotating the fixing screw 6 to lead the bottom end of the ejection device to be far away from the limiting groove 4, then observing the scale mark 5 and pushing the second limiting frame 201 to lead the two sides of the ejection device to be mutually contacted with the surface of the rollers 3, and then rotating the fixing screw 6 to fix the second limiting frame 201, the limit function of the simulation monitoring device on the ejection equipment is achieved, the deflection phenomenon of the ejection equipment when the simulation monitoring device is used is avoided, the push rod 11 is pushed when the ejection equipment works, the push rod and the ejection equipment move synchronously at the same speed, the push rod drives the sliding block 17 to move synchronously with a newly excavated tunnel model under the combined action of the fixed rod 14 and the roller 12, the displacement and the deformation of the model tunnel segment 7 are monitored in real time by the displacement sensor 16, meanwhile, the soil body pressure received by the model tunnel segment 7 is monitored under the action of the soil pressure box 13, the stress and the bending moment of the model tunnel segment 7 are monitored under the action of the strain gauge 10, the convenience of monitoring of the simulation monitoring device is achieved, the convenience degree of the simulation monitoring device when the simulation monitoring device is used is improved, and the use work of the simulation monitoring device is finally completed.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. Existing tunnel simulation monitoring devices of double-line tunnel excavation, including mold box (1), model tunnel section of jurisdiction (7), foil gage (10), soil pressure cell (13) and dead lever (14), its characterized in that: model tunnel pipe pieces (7) with equal intervals are buried at one side in the model box (1), and the inner thread of one side of the model tunnel segment (7) is connected with a fixed bolt (9), one end of the fixing bolt (9) penetrates through the model tunnel segment (7) and is in threaded connection with the surface of the adjacent model tunnel segment (7), a soil pressure box (13) is bonded at the central position of the surface of the model tunnel segment (7), and the surface of the model tunnel segment (7) at the outer side of the soil pressure box (13) is fixed with a fixed ring (8), the surface of the model tunnel segment (7) at one side of the soil pressure box (13) is adhered with a strain gauge (10), a fixed rod (14) is fixed on the surface of the model box (1) at the inner side of the model tunnel segment (7), and the surfaces of the fixed rods (14) are all provided with adjusting grooves (15) at equal intervals, and the surface of the model box (1) is fixed with a first limiting frame (2).
2. The device for simulating and monitoring the excavation of the existing tunnel of the double-track tunnel according to claim 1, characterized in that: spacing groove (4) have all been seted up on mold box (1) surface of first spacing frame (2) one side, and the inside of spacing groove (4) is provided with spacing frame of second (201) to spacing frame of second (201) and the inside of first spacing frame (2) all articulates there is equidistant roller (3).
3. The device for simulating and monitoring the excavation of the existing tunnel of the double-track tunnel according to claim 2, characterized in that: the utility model discloses a spacing groove (4) of roller (3) one side, including roller (3), spacing frame (201) of second surface threaded connection have set screw (6), and the surface of set screw (6) one end runs through spacing frame (201) of second and closely laminates with the surface of spacing groove (4), mold box (1) surface mosaic of spacing groove (4) one side has scale mark (5).
4. The device for simulating and monitoring the excavation of the existing tunnel of the double-track tunnel according to claim 1, characterized in that: the inside of solid fixed ring (8) all sets up equidistant arc type groove (19), and equidistant adjusting spring (20) all install to the inner wall in arc type groove (19), the fixed surface of adjusting spring (20) one end has arc type piece (18), and the surface of arc type piece (18) one end closely laminates with the surface of soil pressure cell (13).
5. The device for simulating and monitoring the excavation of the existing tunnel of the double-track tunnel according to claim 1, characterized in that: the surface of the fixing rod (14) above the adjusting groove (15) is provided with a sliding block (17), the surface of the bottom of the sliding block (17) is provided with a roller (12), and the roller (12) is located inside the adjusting groove (15).
6. The device for simulating and monitoring the excavation of the existing tunnel of the double-track tunnel according to claim 5, characterized in that: the surface mounting of slider (17) has displacement sensor (16), dead lever (14) surface cover of slider (17) one side is equipped with push rod (11), and the surface of push rod (11) one end is connected with the fixed surface of slider (17) to the other end of push rod (11) extends to the outside of model case (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021049943.0U CN212058718U (en) | 2020-06-10 | 2020-06-10 | Existing tunnel simulation monitoring devices of double-track tunnel excavation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021049943.0U CN212058718U (en) | 2020-06-10 | 2020-06-10 | Existing tunnel simulation monitoring devices of double-track tunnel excavation |
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| CN212058718U true CN212058718U (en) | 2020-12-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049775A (en) * | 2021-03-09 | 2021-06-29 | 天津大学 | Double-freedom-degree existing tunnel simulation test device and method |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049775A (en) * | 2021-03-09 | 2021-06-29 | 天津大学 | Double-freedom-degree existing tunnel simulation test device and method |
| CN113049775B (en) * | 2021-03-09 | 2022-12-30 | 天津大学 | Double-freedom-degree existing tunnel simulation test device and method |
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