CN108914937B - Roadbed grouting device - Google Patents
Roadbed grouting device Download PDFInfo
- Publication number
- CN108914937B CN108914937B CN201810890612.0A CN201810890612A CN108914937B CN 108914937 B CN108914937 B CN 108914937B CN 201810890612 A CN201810890612 A CN 201810890612A CN 108914937 B CN108914937 B CN 108914937B
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- China
- Prior art keywords
- grouting
- pipe
- pipes
- roadbed
- grouting pipe
- Prior art date
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- 238000012806 monitoring device Methods 0.000 claims description 11
- 239000002689 soil Substances 0.000 claims description 11
- 239000003086 colorant Substances 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 239000002002 slurry Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 230000035699 permeability Effects 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 239000011440 grout Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Architecture (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to a roadbed grouting device, which belongs to the field of railway construction and comprises a grouting pump set, wherein the grouting pump set comprises a plurality of grouting pumps; the grouting pipe bundles are connected with the grouting pump group and comprise a plurality of grouting pipes with different lengths; the grouting pipe and the grouting pump are correspondingly connected through a grouting line. The invention can simultaneously inject slurry at different depth positions in the holes of the roadbed, and is convenient for controlling the flow and pressure of each position.
Description
Technical Field
The invention relates to a roadbed grouting device, which is used for the roadbed reinforcement field.
Background
Roadbed is a foundation for carrying railway tracks and trains, and construction of roadbed is a very important part in railway line engineering. The roadbed deforms to cause unsmooth lines, so that safe operation of the train cannot be guaranteed. In the roadbed operation process, settlement diseases of the high-speed railway roadbed are usually remedied by adopting measures of roadbed body and substrate grouting.
In granular formations, the particle size distribution and permeability of the soil determine the degree of pourability, as well as the distance the grouting reaches from the injection point. Meanwhile, in the case of laminar flow, darcy's law must be applied, which relates flow (Q) to permeability in proportion (K) to injection pressure (P).
Therefore, in theory, in order to infuse the porous material, a sufficient infusion pressure should be increased as the permeability decreases. In this case, the grouting travels a great distance along the injection point along the artificial fracture: the grouting amount is large, but the strength and the permeability of the soil are not improved obviously. In order to avoid hydraulic fracturing and achieve satisfactory soil treatment, relatively low injection pressures and grouting flows are required. In the case of grouting using conventional casing, relatively low injection pressure and grouting flow have great impact on construction process and economy, because there is only one grouting port and one dual-packing packer during grouting. Furthermore, conventional grouting apparatuses are equipped with only a small portion of pumps, their grouting flow rates being relatively high and tending to stall at low grouting flows. In this case, the number of pumps may not be able to maintain project progress.
Disclosure of Invention
Aiming at the problems, the invention provides a roadbed grouting device which can simultaneously inject grout at different depth positions in holes of a roadbed, is convenient for controlling the flow and pressure of each position, can reduce grouting pressure and grouting flow, improves the permeability characteristic during soil reinforcement, enhances the reinforcement effect and saves the construction period.
The invention provides a roadbed grouting device, which comprises:
the grouting pump set comprises a plurality of grouting pumps; and
the grouting pipe bundle is connected with the grouting pump group and comprises a plurality of grouting pipes with different lengths;
the grouting pipe and the grouting pump are correspondingly connected through a grouting line.
The invention is further improved in that each grouting pipe is provided with a separate grouting valve; the grouting valve can control the grouting pipes to grouting independently and can also control the grouting pipes to grouting simultaneously.
The invention is further improved in that a flowmeter is arranged on the grouting line; the grouting pump is provided with an automatic monitoring and control system, and grouting parameters are recorded in real time.
The invention further improves that the grouting pipe is provided with an identification port corresponding to the length of the grouting pipe.
A further development of the invention consists in arranging grouting pipes of different colors in the grouting pipe bundle, wherein the colors of the grouting pipes are correlated with the lengths thereof.
The invention is further improved in that 2-40 grouting pipes are arranged on the grouting pipe bundle, and the grouting pipes are fixedly connected into a whole through a plurality of connecting pieces.
The invention further improves that the connecting piece is a flexible rope, and the grouting pipe bundles are connected together in a rope bundling mode.
The invention further improves that the connecting piece is a plurality of elastic or rigid sleeves which are sleeved on the grouting pipe bundle to fix the grouting pipe.
The roadbed grouting device further comprises a monitoring device, wherein the monitoring device is connected with the grouting pipe bundle and is used for measuring grouting flow information and grouting pressure information; and the input end of the control system is connected with the monitoring device, and the output end of the control system is connected with the grouting valve for controlling the grouting speed.
The invention is further improved in that the length and shape distribution of the grouting pipe are determined according to soil quality of soil layers, required grouting depth, grouting range and pressure.
Compared with the prior art, the invention has the advantages that:
the roadbed grouting device is provided with a grouting pipe bundle, and a plurality of low-flow grouting pipes are arranged on the grouting pipe bundle. Each grouting pipe is provided with a single grouting valve. Each grouting pipe can be connected to a grouting line, and grouting can be simultaneously injected at positions with different depths in grouting holes. To simplify field operation, the grouting pipes have different functional colors and the ports are identified with progressive numbers that relate to the depth of the grout. The grouting pump is connected to an automatic monitoring and control system, automatically monitors the grouting process and controls parameters such as grouting time, grouting flow rate and the like in real time. The pressure and the length of the grouting tube bundle can be set according to the permeabilities of different soil layers and different grouting depths, so that the permeabilities and the economical efficiency of grouting reinforcement are improved.
Drawings
Fig. 1 is a schematic structural view of a grouting device for roadbed according to an embodiment of the present invention, showing a state in grouting.
In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.
The meaning of the reference numerals in the drawings is as follows: 1. the grouting device comprises a grouting pump group, 2 grouting pipe bundles, 3 grouting lines, 4, roadbed, 11, a grouting pump, 12 and grouting pipes.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Fig. 1 schematically shows a roadbed grouting apparatus according to an embodiment of the present invention. The roadbed grouting device can simultaneously inject slurry at different depth positions in holes of the roadbed, and is convenient for controlling flow and pressure of each position.
As shown in fig. 1, the roadbed grouting device according to the present embodiment includes a grouting pump set 1, where the grouting pump set 1 includes a plurality of grouting pumps 11. The subgrade grouting device further comprises a grouting pipe bundle 2, and the grouting pipe bundle 2 comprises a plurality of grouting pipes 12. The grouting pipes 12 have different lengths, and are provided with grouting openings at the bottom ends thereof for grouting positions of different depths in the holes. The grouting pipe bundles 2 are connected with the grouting pump group 1 through grouting lines 3, in the embodiment, the number of grouting pumps 11 in the grouting pump group 1 is the same as the number of grouting pipes 12 in the grouting pipe bundles 2, and the grouting pumps 11 and the grouting pipes 12 are connected in a one-to-one correspondence through separate grouting lines 3.
In using the roadbed grouting apparatus according to the present embodiment, a plurality of grouting pipes 12 are provided through a set of grouting pipe bundles 2, grouting is performed to different depths, respectively. The flow and pressure within each grouting pipe 12 can be controlled individually during grouting. Since each grouting pipe 12 is individually connected to the corresponding grouting pump 11, it is possible to secure the position flow rate and pressure of each depth and to facilitate control of grouting parameters of the individual grouting pipe 12.
In one embodiment, a separate grouting valve is provided on each of the grouting pipes 12. The grouting valve can open and close grouting, and can adjust the flow. The grouting pipe bundles 2 of the present embodiment are provided with a plurality of grouting valves, so that the flow rate of each grouting pipe 12 can be finely controlled, and the grouting pressure and flow rate at a specific depth position can be controlled. In this embodiment, the grouting valve can control the grouting pipes to grouting alone and can also control grouting pipes to grouting simultaneously. Through the mode of simultaneously injecting, grouting efficiency can be improved, so that cost is saved, and economical efficiency is improved.
In one embodiment, a flowmeter is provided on the grouting line 3. The flow meter can measure and display the flow of the slurry in the grouting line 3, and is convenient for timely operation. In this embodiment, the flowmeter may also be provided on the grouting pump 11 or the grouting pipe 12, so as to ensure that the slurry flow rate in the grouting process can be measured. The grouting pump 12 is provided with an automatic monitoring and control system, and grouting parameters (such as grouting speed, grouting time and the like) are recorded in real time.
In one embodiment, the grouting pump 11 is provided with a pressure gauge, and the pressure gauge can measure the grouting pressure.
In one embodiment, the grouting pipe 12 is provided with an identification port corresponding to the length of the grouting pipe 12. In this embodiment, the identification port may be identified by different colors, or by means of text, numbers, or patterns. When the roadbed grouting device according to the present embodiment works, each grouting pipe 12 can be identified through the identification port above when the grouting pipe bundle 2 is put into the hole. In this way, the occurrence of erroneous operation due to the mixing of the grouting pipe 12 is avoided.
In a preferred embodiment, the grouting pipes 12 in the grouting pipe bundle 2 are arranged in different colors. Wherein the color of the grouting pipe 12 is related to its length. In the grouting process using the roadbed grouting device according to the present embodiment, when the grouting pipe bundle 2 extends into the grouting hole, the worker can determine the length of the grouting pipe by the color of the portion of the grouting pipe 12 exposed outside the grouting hole. For example, by representing the length of the grouting pipe 12 by colors of different gradations or colors of different depths, the worker can judge the length of the grouting pipe at a glance. Naturally, it is also possible to artificially specify that a specific color is used in a certain section.
In one embodiment, the roadbed grouting device further comprises a monitoring device, and the monitoring device is connected with the grouting pipe bundle 2 and is used for measuring grouting flow information and grouting pressure information. In this embodiment, the monitoring device is a corresponding sensor for measuring flow and pressure. The roadbed filling tool according to this embodiment further includes a control system, wherein an input end of the control system is connected with the monitoring device, and is configured to receive flow information and pressure information monitored by the monitoring device. The output end of the control system is connected with the grouting valve and used for controlling grouting speed. The control system can automatically adjust grouting speed, pressure and other parameters according to preset grouting conditions.
In one embodiment, the grouting pipe bundles 2 are provided with a plurality of grouting pipes 12 with different lengths, and the number of the grouting pipes 12 is 2-40, which is selected according to the requirement in the actual grouting process. In this embodiment, the grouting pipes 12 are fixedly connected into a whole through a plurality of connectors, so that the grouting pipe bundles 2 are ensured not to be loosened and separated in the grouting process to affect grouting.
In a preferred embodiment, the connection members are flexible wires, and the grouting pipe bundles 2 are connected together in a wire-tying manner. In another preferred embodiment, the connector is a sleeve, which may be a rigid sleeve, such as a rigid tube or the like; or a sleeve with certain elasticity, such as a rubber tube, etc. The sleeve is sleeved on the grouting pipe bundle 2 to fix the grouting pipes 12.
In one embodiment, the length and shape distribution of the grouting pipe 12 is determined according to the soil texture of the soil layer and the desired grouting depth, grouting range and pressure.
In a specific embodiment, several sets of grouting holes are designed in the subgrade, each set comprising 7 holes. Primary, secondary and tertiary sequences were injected on a triangular mesh at 1 meter intervals, respectively. All grouting holes were drilled with a casing of 142 mm diameter to a maximum depth of 33.8 meters below the surface. The grouting pipe bundle 2 in the roadbed grouting device according to the present embodiment is installed in the hole. The annulus is backfilled between the grouting pipe 12 and the ground with bottom-up grouting.
Three sets of bores (A, D and C) were each fitted with a conventional 11/2' diameter. The sleeve and the valve spacing is 0.33 meter. A set (E) is provided for an injection and TMG system. In each hole there is a bundle of holes of 31 mm diameter 4 mm. The pipe is installed. Each conduit has a separate valve at its top end. Thirty-one pipes (19 to 34 meters long, 0.5 meters in increments) are bundled together, each labeled with a length. The pipe is placed in the sleeve hole and the deepest valve is placed 33.5 meters below the surface.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (6)
1. A subgrade grouting device, comprising:
a grouting pump group (1), wherein the grouting pump group (1) comprises a plurality of grouting pumps (11); and
a grouting pipe bundle (2) connected with the grouting pump group (1), wherein the grouting pipe bundle (2) comprises a plurality of grouting pipes (12) with different lengths; a grouting opening is formed in the bottom end of each grouting pipe (12), and each grouting pipe (12) is provided with an independent grouting valve;
wherein the grouting pipe (12) is correspondingly connected with the grouting pump (11) through a grouting line (3);
the grouting pipe (12) is provided with an identification port corresponding to the length of the grouting pipe (12);
grouting pipes (12) with different colors are arranged in the grouting pipe bundle (2), wherein the colors of the grouting pipes (12) are related to the lengths of the grouting pipes;
2-40 grouting pipes (12) are arranged on the grouting pipe bundle (2), and the grouting pipes (12) are fixedly connected into a whole through a plurality of connecting pieces;
the roadbed grouting device further comprises a monitoring device, wherein the monitoring device is connected with the grouting tube bundle (2), and is a corresponding sensor for measuring grouting flow information and grouting pressure information; and the input end of the control system is connected with the monitoring device, and the output end of the control system is connected with the grouting valve for controlling the grouting speed.
2. The subgrade grouting device of claim 1, wherein said grouting valve is capable of controlling grouting of said grouting pipes individually and also capable of controlling grouting pipes simultaneously.
3. Roadbed grouting device according to claim 2, characterized in that the grouting line (3) is provided with a flow meter; an automatic monitoring and control system is arranged on the grouting pump (11), and grouting parameters are recorded in real time.
4. A roadbed grouting device according to claim 3, wherein the connecting pieces are flexible ropes, and the grouting pipe bundles (2) are connected together in a rope bundling manner.
5. A subgrade grouting device as claimed in claim 3, wherein said connectors are elastic or rigid bushings which are sleeved on said grouting tube bundle (2) to fix said grouting tubes (12).
6. The subgrade grouting device as claimed in claim 5, wherein the grouting pipe (12) length and shape distribution is determined according to soil properties of the soil layer and the required grouting depth, grouting range and pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810890612.0A CN108914937B (en) | 2018-08-07 | 2018-08-07 | Roadbed grouting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810890612.0A CN108914937B (en) | 2018-08-07 | 2018-08-07 | Roadbed grouting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108914937A CN108914937A (en) | 2018-11-30 |
| CN108914937B true CN108914937B (en) | 2024-03-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810890612.0A Active CN108914937B (en) | 2018-08-07 | 2018-08-07 | Roadbed grouting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN108914937B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507393B (en) * | 2018-12-28 | 2024-04-16 | 山东科技大学 | Indoor overlying strata separation layer quantity measurement and grouting control simulation system and method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749030A (en) * | 2009-12-29 | 2010-06-23 | 中国矿业大学 | Porous parallel-connected grouting method and device for reinforcing roadway weak surrounding rock |
| CN102899972A (en) * | 2012-11-14 | 2013-01-30 | 铁道第三勘察设计院集团有限公司 | Steel flora tube grouting reinforcement structure of existing railway bed under operating conditions |
| SE1551697A1 (en) * | 2015-12-22 | 2017-06-23 | Veidekke Entreprenad Ab | Procedure and apparatus for injecting rock or soil mass |
| CN206337474U (en) * | 2016-11-24 | 2017-07-18 | 中铁第四勘察设计院集团有限公司 | The slip casting structure of covered karst embankment |
| CN107956483A (en) * | 2017-10-30 | 2018-04-24 | 中国矿业大学 | A kind of complex geological district wisdom filling system and grouting method |
| CN209194535U (en) * | 2018-08-07 | 2019-08-02 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of roadbed grouting device |
-
2018
- 2018-08-07 CN CN201810890612.0A patent/CN108914937B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749030A (en) * | 2009-12-29 | 2010-06-23 | 中国矿业大学 | Porous parallel-connected grouting method and device for reinforcing roadway weak surrounding rock |
| CN102899972A (en) * | 2012-11-14 | 2013-01-30 | 铁道第三勘察设计院集团有限公司 | Steel flora tube grouting reinforcement structure of existing railway bed under operating conditions |
| SE1551697A1 (en) * | 2015-12-22 | 2017-06-23 | Veidekke Entreprenad Ab | Procedure and apparatus for injecting rock or soil mass |
| CN206337474U (en) * | 2016-11-24 | 2017-07-18 | 中铁第四勘察设计院集团有限公司 | The slip casting structure of covered karst embankment |
| CN107956483A (en) * | 2017-10-30 | 2018-04-24 | 中国矿业大学 | A kind of complex geological district wisdom filling system and grouting method |
| CN209194535U (en) * | 2018-08-07 | 2019-08-02 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of roadbed grouting device |
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| Publication number | Publication date |
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| CN108914937A (en) | 2018-11-30 |
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