CN212433171U - Shield grouting test device - Google Patents
Shield grouting test device Download PDFInfo
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- CN212433171U CN212433171U CN202020981854.3U CN202020981854U CN212433171U CN 212433171 U CN212433171 U CN 212433171U CN 202020981854 U CN202020981854 U CN 202020981854U CN 212433171 U CN212433171 U CN 212433171U
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Abstract
The utility model relates to a test device field relates to a shield constructs slip casting test device. The shield grouting test device comprises a test box, wherein test soil is filled in the test box; the pressing plate is arranged in the test box and used for extruding the test soil; the output end of the hydraulic cylinder is connected with the pressing plate and is used for driving the pressing plate to move; one end of the simulation shield tail is inserted into the test soil, and the other end of the simulation shield tail extends out of the test box; simulating a pipe piece, wherein one end of the simulating pipe piece is inserted into the simulating shield tail, and the other end of the simulating pipe piece is inserted into the test soil; the grouting device is communicated with the gap between the simulation shield tail and the simulation pipe piece; and the driving device is connected to one end of the simulation shield tail extending out of the test box. This shield constructs slip casting test device can exert different pressures through the pneumatic cylinder to the clamp plate at the in-process that simulation shield tail and simulation section of jurisdiction cooperation removed, can simulate the soil layer pressure of the different degree of depth, has improved the simulation effect of shield structure slip casting test device greatly, excellent in use effect.
Description
Technical Field
The utility model relates to a test device field especially relates to a shield constructs slip casting test device.
Background
The contradiction between urban traffic construction and building concentration is gradually highlighted, in order to solve the contradiction, more and more cities project the sight to the development of underground space, wherein underground tunnels are gradually fully utilized by all cities, among a plurality of tunnel construction methods, a shield method gradually becomes a mainstream construction method of underground engineering through the development of more than one hundred years, compared with the traditional shield construction method, the shield method has unique construction advantages, wherein the main advantages are that ground traffic and resident life are not influenced, and the tunnel construction efficiency is greatly improved through the shield advancing, segment installation, wall back grouting and other processes, and a large amount of manpower is saved.
However, when the shield piece is separated from the shield tail, an annular gap with the width of about 140mm is formed between the soil body and the duct piece. The purpose of grouting is to fill the annular gap as soon as possible to enable the duct piece to support the stratum as early as possible, prevent the ground from deforming excessively to endanger the safety of the surrounding environment, and serve as a waterproof and structural reinforcing layer outside the duct piece. The existing shield grouting test device lacks an effective soil layer pressure simulation function, so that the simulation effect is poor and the use effect is poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a shield constructs slip casting test device can accurately simulate the different soil layer pressure of shield slip casting in-process, and then has improved the simulation effect of shield structure slip casting test device greatly, excellent in use effect.
The utility model provides a shield constructs slip casting test device, include:
the test box is filled with test soil;
the pressing plate is arranged in the test box and is used for extruding the test soil;
the output end of the hydraulic cylinder is connected with the pressing plate and is used for driving the pressing plate to move;
one end of the simulation shield tail is inserted into the test soil, and the other end of the simulation shield tail extends out of the test box;
one end of the simulation pipe piece is inserted into the simulation shield tail, and the other end of the simulation pipe piece is inserted into the test soil;
the grouting device is communicated with the gap between the simulation shield tail and the simulation duct piece;
and the driving device is connected to one end, extending out of the test box, of the simulation shield tail.
Further, the grouting device includes:
the grouting pipelines are respectively communicated with the simulation shield tail and the clearance between the simulation pipe pieces;
the grouting tanks are communicated with the grouting pipelines in a one-to-one correspondence manner;
and the grouting pumps are connected to the grouting pipelines in a one-to-one correspondence manner.
Further, still include:
the support is fixedly connected to the outer wall of the test box, and the base of the hydraulic cylinder is fixedly connected to the support.
Furthermore, the number of the pressing plates is at least two, and the at least two pressing plates are arranged in the test box at intervals;
the number of the hydraulic cylinders is at least two, and the at least two hydraulic cylinders are connected with the pressing plates in a one-to-one correspondence manner;
the number of the supports is at least two, and the at least two supports are connected with the hydraulic cylinders in a one-to-one correspondence mode.
Furthermore, the inner wall of one end of the test soil, into which the simulation shield tail is inserted, is provided with at least three shield tail brushes which are in sealing fit with the simulation pipe piece, a shield tail bin is formed between every two adjacent shield tail brushes, and an oil injection device is connected to the shield tail bin.
Further, the oiling device comprises:
an oil tank;
and the two ends of the oil pipe are respectively connected with the oil tank and the shield tail bin.
Further, the test chamber is made of a transparent material.
Further, still include:
and the image acquisition device is arranged on the outer wall of the test box.
Further, still include:
and the control device is electrically connected with the grouting pump and the image acquisition device.
Further, the simulation shield tail is arranged along the central axis of the test box.
The utility model provides a shield constructs slip casting test device through set up the clamp plate in the proof box and through the action of pneumatic cylinder drive clamp plate, sets up simulation shield tail and simulation section of jurisdiction in the proof box simultaneously, and then at the in-process that simulation shield tail and simulation section of jurisdiction cooperation removed, applys different pressure to the clamp plate through the pneumatic cylinder, can simulate the soil layer pressure of the different degree of depth, has improved the simulation effect of shield structure slip casting test device greatly, excellent in use effect. Therefore, the simulation effect of the shield grouting test device is closer to the real state, and a foundation is laid for subsequent research.
Drawings
Fig. 1 is a schematic structural diagram of a shield grouting test device provided by an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
figure 3 is a schematic side view of the shield slip casting test device that utility model embodiment provided.
The reference numbers illustrate:
100. a test chamber; 102. pressing a plate; 104. a hydraulic cylinder; 106. simulating a shield tail; 108. simulating a segment; 110. a drive device; 112. grouting pipelines; 114. grouting tanks; 116. a support; 118. a shield tail brush; 120. a shield tail bin; 122. an oil tank; 124. and (4) an oil pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the utility model.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
As shown in fig. 1 to 3, the utility model provides a shield slip casting test device, including proof box 100, clamp plate 102, pneumatic cylinder 104, simulation shield tail 106, simulation section of jurisdiction 108, slip casting device and drive arrangement 110. Wherein, the test box 100 is filled with test soil; the pressing plate 102 is arranged in the test chamber 100 and used for pressing test soil; the output end of the hydraulic cylinder 104 is connected with the pressure plate 102 and is used for driving the pressure plate 102 to move; one end of the simulation shield tail 106 is inserted into the test soil, and the other end extends out of the test box 100; one end of the simulation segment 108 is inserted into the simulation shield tail 106, and the other end is inserted into the test soil; the grouting device is communicated with the clearance between the simulation shield tail 106 and the simulation duct piece 108; the driving device 110 is connected to one end of the simulation shield tail 106 extending out of the test chamber 100.
The utility model provides a shield constructs slip casting test device through set up clamp plate 102 in proof box 100 and drive the action of clamp plate 102 through pneumatic cylinder 104, set up simulation shield tail 106 and simulation section of jurisdiction 108 in proof box 100 simultaneously, and then at the in-process that simulation shield tail 106 and simulation section of jurisdiction 108 cooperate the removal, exert different pressure to clamp plate 102 through pneumatic cylinder 104, can simulate the soil layer pressure of the different degree of depth, the simulation effect of shield structure slip casting test device has been improved greatly, excellent in use effect. Therefore, the simulation effect of the shield grouting test device is closer to the real state, and a foundation is laid for subsequent research.
Particularly, in the embodiment of the present invention, the inside of the test box 100 is filled with test soil to simulate the soil in the stratum. The test chamber 100 may be made of a transparent material, such as polystyrene, plexiglass, or the like. The test box 100 made of the transparent material facilitates the tester to observe the state of the test soil in the test box 100 in real time in the grouting test process.
A press plate 102 is disposed within the test chamber 100 and is used to squeeze the test soil to enable simulation of soil layer pressure in formations of different depths. Thus, the initial position of the pressing plate 102 is set at a position in the test chamber 100 closely attached to the inner wall of the test chamber 100, and thus, the test soil in the test chamber 100 can be squeezed to simulate the soil layer pressures at different depths.
In order to enable the pressure plate 102 to perform the above function, a hydraulic cylinder 104 is further connected to the pressure plate 102, wherein an output end of the hydraulic cylinder 104 is connected to the pressure plate 102, that is, a piston rod in the hydraulic cylinder 104 extends into the test chamber 100 and is fixedly connected to the pressure plate 102. Thus, when the piston rod is extended, the press plate 102 can be driven to extrude the test soil, so that the soil layer pressure at different depths can be simulated. In other words, when the piston rod is extended, the pressure exerted by the pressing plate 102 on the test soil becomes large; as the piston rod is shortened, the pressure exerted by the pressure plate 102 on the test soil becomes less.
One end of the simulation shield tail 106 is inserted into the test soil, and the other end extends out of the test box 100; one end of the simulated duct piece 108 is inserted into the simulated shield tail 106, and the other end is inserted into the test soil. That is, the simulated shield tail 106 and the simulated segments 108 together form a simulated shield tunneling machine to achieve simulated tunneling in the test soil.
Therefore, in order to drive the simulation tail 106 and the simulation duct piece 108 to realize the simulation of the shield machine, a driving device 110 is further arranged at one end of the simulation tail 106 extending out of the test box 100.
The grouting device is communicated with the gap between the simulation shield tail 106 and the simulation duct piece 108, namely, the grouting device is used for grouting the gap between the simulation shield tail 106 and the simulation duct piece 108 so as to simulate the process of grouting into the shield machine.
Further, the grouting device includes a plurality of grouting pipes 112, a plurality of grouting tanks 114, and a grouting pump. Wherein, a plurality of grouting pipelines 112 are respectively communicated with the gaps between the simulation shield tail 106 and the simulation duct pieces 108; a plurality of grouting tanks 114 are communicated with the grouting pipes 112 in a one-to-one correspondence; the grouting pumps are connected to the respective grouting pipes 112 in a one-to-one correspondence.
Through setting up many slip casting pipelines 112 to communicate many slip casting pipelines 112 with different slip casting jars 114 respectively, can also deposit the thick liquids of different ratios alone simultaneously through the slip casting speed and the slip casting pressure of controlling every slip casting pipeline 112 to study the influence of the slip casting of different formulas to synchronous slip casting. The grouting pumps arranged on the grouting pipelines 112 can effectively ensure that the grout in the grouting pipelines 112 is smoothly pressed into the gaps between the simulation shield tail 106 and the simulation duct piece 108, and the simulation grouting efficiency is improved.
Further, a bracket 116 is further included, the bracket 116 is fixedly connected to the outer wall of the test chamber 100, and the base of the hydraulic cylinder 104 is fixedly connected to the bracket 116.
By providing a bracket 116 on the outer wall of test chamber 100, hydraulic cylinder 104 can be mounted directly to bracket 116. Specifically, bracket 116 may be bolted or welded to test chamber 100; the base of the hydraulic cylinder 104 may be mounted on a bracket 116.
Further, there are at least two pressing plates 102, and the at least two pressing plates 102 are arranged in the test chamber 100 at intervals; at least two hydraulic cylinders 104 are provided, and the at least two hydraulic cylinders 104 are connected with the pressing plates 102 in a one-to-one correspondence manner; the number of the brackets 116 is at least two, and the at least two brackets 116 are connected to the hydraulic cylinders 104 in a one-to-one correspondence.
In other words, at least two pressing plates 102 are respectively provided in the test chamber 100 to press the test soil, so that the test soil can be comprehensively pressed. At least two brackets 116 are fixedly connected to the outside of the test chamber 100 to support the hydraulic cylinder 104. That is, in the embodiment of the present invention, the number of the pressing plates 102, the hydraulic cylinders 104, and the brackets 116 is one-to-one.
Furthermore, at least three shield tail brushes 118 are arranged on the inner wall of one end, inserted into the test soil, of the simulation shield tail 106, the at least three shield tail brushes 118 are in sealing fit with the simulation pipe piece 108, a shield tail bin 120 is formed between every two adjacent shield tail brushes 118, and an oil injection device is connected to the shield tail bin 120; the oil injection device comprises an oil tank 122 and an oil pipe 124, and two ends of the oil pipe 124 are respectively connected with the oil tank 122 and the shield tail bin 120.
The inner wall of the end of the simulation shield tail 106 located in the test box 100 is provided with a sealing mechanism, wherein the sealing mechanism is composed of three evenly distributed shield tail brushes 118, the shield tail brushes 118 form a sealing fit with the outer wall of the simulation duct piece 108, a shield tail bin 120 is formed between every two adjacent shield tail brushes 118, an oil pipe 124 is arranged in the simulation shield tail 106 in a penetrating mode, the oil outlet ends of the oil pipe 124 are two, and the two oil outlet ends of the oil pipe 124 are respectively communicated with the corresponding shield tail bins 120.
By arranging the shield tail brush 118, the shield tail bin 120, the oil pipe 124 and the like and matching the shield tail brush 118, the shield tail bin 120, the oil pipe 124 and the oil tank 122, the sealing effect of the shield tail during operation of the shield machine can be simulated, the slurry leakage of the shield tail is avoided, and the effective performance of a simulation test is ensured.
Further, the test box further comprises an image acquisition device, and the image acquisition device is arranged on the outer wall of the test box 100. As mentioned above, the test box 100 is made of transparent material, so that the image acquisition device can be used for recording the whole course of the shield grouting test device from multiple angles, and subsequent research is facilitated.
Further, the device also comprises a control device, and the control device is electrically connected with the grouting pump and the image acquisition device. Through setting up controlling means, not only can realize the control to image acquisition device, can also realize the control to foretell grouting pump with the grouting rate and the slip casting pressure through controlling every slip casting pipeline 112 to the influence of the slip casting of research different formulas to synchronous slip casting. The grouting pumps arranged on the grouting pipelines 112 can effectively ensure that the grout in the grouting pipelines 112 is smoothly pressed into the gaps between the simulation shield tail 106 and the simulation duct piece 108, and the simulation grouting efficiency is improved.
Further, the simulation shield tail 106 is disposed along the central axis of the test chamber 100.
By arranging the simulation shield tail 106 along the central axis of the test box 100, the test soil can be ensured to uniformly apply pressure to the simulation shield tail 106, and the test accuracy of the shield grouting test device is ensured.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a shield constructs slip casting test device which characterized in that includes:
the test box (100), the inside of the test box (100) is filled with test soil;
a pressing plate (102) disposed in the test chamber (100) and pressing the test soil;
the output end of the hydraulic cylinder (104) is connected with the pressure plate (102) and is used for driving the pressure plate (102) to move;
a simulation shield tail (106), wherein one end of the simulation shield tail (106) is inserted into the test soil, and the other end of the simulation shield tail extends out of the test box (100);
the simulation pipe piece (108), one end of the simulation pipe piece (108) is inserted into the simulation shield tail (106), and the other end of the simulation pipe piece is inserted into the test soil;
the grouting device is communicated with a gap between the simulation shield tail (106) and the simulation duct piece (108);
and the driving device (110) is connected to one end, extending out of the test box (100), of the simulation shield tail (106).
2. The shield grouting test device of claim 1, wherein the grouting device comprises:
a plurality of grouting pipelines (112), wherein the plurality of grouting pipelines (112) are respectively communicated with the simulation shield tail (106) and the gaps between the simulation pipe pieces (108);
a plurality of grouting tanks (114) which are communicated with the grouting pipelines (112) in a one-to-one correspondence manner;
and grouting pumps which are connected to the grouting pipelines (112) in a one-to-one correspondence manner.
3. The shield grouting test device according to claim 2, further comprising:
the bracket (116) is fixedly connected to the outer wall of the test box (100), and the base of the hydraulic cylinder (104) is fixedly connected to the bracket (116).
4. The shield grouting test device according to claim 3, characterized in that the number of the pressure plates (102) is at least two, and at least two pressure plates (102) are arranged in the test box (100) at intervals;
the number of the hydraulic cylinders (104) is at least two, and the at least two hydraulic cylinders (104) are connected with the pressing plate (102) in a one-to-one correspondence manner;
the number of the supports (116) is at least two, and the at least two supports (116) are connected with the hydraulic cylinders (104) in a one-to-one correspondence mode.
5. The shield grouting test device according to claim 2, characterized in that the inner wall of one end of the simulation shield tail (106) inserted into the test soil is provided with at least three shield tail brushes (118), at least three shield tail brushes (118) are in sealing fit with the simulation pipe piece (108), a shield tail bin (120) is formed between two adjacent shield tail brushes (118), and an oil injection device is connected to the shield tail bin (120).
6. The shield grouting test device according to claim 5, wherein the oil injection device comprises:
an oil tank (122);
and two ends of the oil pipe (124) are respectively connected with the oil tank (122) and the shield tail bin (120).
7. The shield grouting test device according to claim 2, characterized in that the test chamber (100) is made of a transparent material.
8. The shield grouting test device according to claim 7, further comprising:
the image acquisition device is arranged on the outer wall of the test box (100).
9. The shield grouting test device according to claim 8, further comprising:
and the control device is electrically connected with the grouting pump and the image acquisition device.
10. The shield grouting test device according to any one of claims 1 to 9, characterized in that the simulated shield tail (106) is arranged along the central axis of the test chamber (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020981854.3U CN212433171U (en) | 2020-06-02 | 2020-06-02 | Shield grouting test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020981854.3U CN212433171U (en) | 2020-06-02 | 2020-06-02 | Shield grouting test device |
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| CN212433171U true CN212433171U (en) | 2021-01-29 |
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| CN202020981854.3U Active CN212433171U (en) | 2020-06-02 | 2020-06-02 | Shield grouting test device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484211A (en) * | 2021-06-18 | 2021-10-08 | 中铁第四勘察设计院集团有限公司 | Test device for simulating single-tube grouting behind shield segment wall |
| CN114165244A (en) * | 2021-11-30 | 2022-03-11 | 中交隧道工程局有限公司 | Shield synchronous double-liquid grouting process field verification test method |
| CN114439492A (en) * | 2022-01-25 | 2022-05-06 | 西南交通大学 | Device for simulating shield synchronous grouting test stratum restraint and test method |
| CN114673512A (en) * | 2022-04-01 | 2022-06-28 | 中国科学院武汉岩土力学研究所 | Shield tunnel excavation synchronous grouting test equipment with controllable degree of freedom and application thereof |
-
2020
- 2020-06-02 CN CN202020981854.3U patent/CN212433171U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484211A (en) * | 2021-06-18 | 2021-10-08 | 中铁第四勘察设计院集团有限公司 | Test device for simulating single-tube grouting behind shield segment wall |
| CN114165244A (en) * | 2021-11-30 | 2022-03-11 | 中交隧道工程局有限公司 | Shield synchronous double-liquid grouting process field verification test method |
| CN114165244B (en) * | 2021-11-30 | 2022-12-02 | 中交隧道工程局有限公司 | Shield synchronous double-liquid grouting process field verification test method |
| CN114439492A (en) * | 2022-01-25 | 2022-05-06 | 西南交通大学 | Device for simulating shield synchronous grouting test stratum restraint and test method |
| CN114673512A (en) * | 2022-04-01 | 2022-06-28 | 中国科学院武汉岩土力学研究所 | Shield tunnel excavation synchronous grouting test equipment with controllable degree of freedom and application thereof |
| CN114673512B (en) * | 2022-04-01 | 2023-02-28 | 中国科学院武汉岩土力学研究所 | Shield tunnel excavation synchronous grouting test equipment with controllable degree of freedom and application thereof |
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