CN113341109A - Tunnel grouting reinforcement, lifting and excavation overall process simulation device and simulation method - Google Patents
Tunnel grouting reinforcement, lifting and excavation overall process simulation device and simulation method Download PDFInfo
- Publication number
- CN113341109A CN113341109A CN202110742240.9A CN202110742240A CN113341109A CN 113341109 A CN113341109 A CN 113341109A CN 202110742240 A CN202110742240 A CN 202110742240A CN 113341109 A CN113341109 A CN 113341109A
- Authority
- CN
- China
- Prior art keywords
- inner sleeve
- grouting
- outer sleeve
- sleeve
- bottom plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a simulation device and a simulation method for the whole process of tunnel grouting reinforcement, lifting and excavation, wherein the simulation device comprises an inner sleeve, an outer sleeve and a connecting and guiding device; the connecting and leading device comprises a connecting and leading device body and a connecting and leading base, wherein the connecting and leading device body is arranged on the connecting and leading base, and a connecting and leading groove is formed in the connecting and leading device body; the outer sleeve comprises an outer sleeve body, a grouting rod and an outer sleeve bottom plate; the outer sleeve is partially embedded into the connecting groove of the connecting device; the inner sleeve comprises a push rod, an inner sleeve body, an inner sleeve bottom support, an inner sleeve bottom plate and a grouting rod hole; a sliding rail is arranged in the outer sleeve along the axial direction, a sliding rail groove is arranged on the outer side wall of the inner sleeve, and a groove is arranged on the inner sleeve bottom support; the outer sleeve and the inner sleeve slide relatively through the slide rail groove and the slide rail. The device can simulate the grouting reinforcement, lifting and excavation processes in the tunnel construction process simultaneously, so that the inner sleeve and the outer sleeve can be pushed out in a stable state, and the inclination of the sleeves cannot occur.
Description
Technical Field
The invention relates to the field of geotechnical experiment methods, in particular to a tunnel grouting reinforcement, lifting and excavation overall process simulation device and method.
Background
With the continuous development of economic construction and the rapid promotion of urbanization process in China, the rail transit network is developed towards a denser direction, and the underground space demand and the construction quantity in China are remarkably increased. In urban underground space, a newly-built tunnel can inevitably pass through underground structures such as existing rail transit, underground express ways, bridge foundations and the like, and the disturbance to surrounding strata and existing underground structures is inevitable in the process of downward passing construction, so that the existing structures are easily deformed excessively, and the structural safety and the use safety of the existing structures are influenced.
In the face of increasing crossing projects, how to ensure that a newly-built tunnel can smoothly pass through an existing underground structure and ensure the overall safety and the use safety of the existing structure becomes an urgent problem to be solved. With the rapid development of geotechnical equipment, indoor experiments have become an effective way for researching the interaction relationship between a newly-built tunnel and an existing structure. The geotechnical centrifugal model test can reproduce the real loading and unloading process of the rock-soil mass in a small scale model, so that the method is widely applied to the research of stratum deformation and rock-soil mass failure mechanism. The similar model test can simultaneously consider geometric conditions, geological conditions and construction conditions, and study and analyze the mechanical response and deformation rule of the newly-built tunnel when passing through the existing structure. Research has shown that the displacement and stress of the existing tunnel vary linearly with the volume loss rate and the grouting rate. In the existing centrifugal test case, the simulation device has the defects or corresponding problems that the test state changes along with the test, the tunnel excavation rate is difficult to control, the stratum loss cannot be calculated, and the test does not have the technology corresponding to the defect names such as repeatable operability and the like.
Disclosure of Invention
The invention provides a whole process simulation device for reinforcing, lifting and excavating a tunnel by grouting, which is used for simulating a grouting lifting process in the early stage of underpass and a whole tunnel excavating process, so that the real construction state is displayed, the tunnel excavation is uniform and controllable, and the test conditions can not be changed in a non-ideal manner.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a tunnel grouting reinforcement, lifting and excavation overall process simulation device comprises an inner sleeve, an outer sleeve and a connecting and guiding device;
the connecting and leading device comprises a connecting and leading device body and a connecting and leading base, wherein the connecting and leading device body is arranged on the connecting and leading base, and a connecting and leading groove is formed in the connecting and leading device body;
the outer sleeve comprises an outer sleeve body, a grouting rod and an outer sleeve bottom plate, the outer sleeve bottom plate is arranged at one end of the outer sleeve body, the grouting rod is arranged in the outer sleeve body, and one end of the grouting rod is fixed on the outer sleeve bottom plate;
the outer sleeve is partially embedded into the lead groove;
the inner sleeve comprises a push rod, an inner sleeve body, an inner sleeve bottom plate and a grouting rod hole, wherein the inner sleeve bottom plate is arranged at one end of the inner sleeve body and is arranged on the inner sleeve bottom plate;
the inner sleeve is arranged in the outer sleeve, the grouting rod penetrates through the grouting rod hole, and the outer sleeve bottom plate is tightly attached to the inner sleeve bottom support.
Further, a grouting opening and a grouting pipe are arranged on the inner wall of the outer sleeve body; one end of the grouting pipe is fixed with the grouting opening.
Further, the axes of the inner sleeve and the outer sleeve are on the same straight line.
Furthermore, a slide rail is arranged in the outer sleeve along the axial direction, a slide rail groove is arranged on the outer side wall of the inner sleeve, and a groove is arranged on the inner sleeve bottom support; the outer sleeve penetrates through the groove to be tightly attached to the inner sleeve, and the outer sleeve and the inner sleeve slide relatively through the slide rail groove and the slide rail.
Further, the outer sleeve bottom plate is matched with the inner sleeve bottom support.
The invention discloses a simulation method of a tunnel grouting reinforcement, lifting and excavation overall process simulation device, which comprises the following steps:
(1) in an initial state, an inner sleeve is sleeved on a tunnel structure, a grouting rod of an outer sleeve penetrates through a grouting rod hole of a bottom plate of the inner sleeve and is sleeved on the inner sleeve, an inner sleeve bottom support is matched with a bottom plate of the outer sleeve, the edge of the outer sleeve penetrates through a groove of the inner sleeve bottom support, and the inner sleeve and the outer sleeve are integrally embedded into a guide groove of a guide device;
(2) simulating a grouting lifting process, pushing a grouting rod of the outer sleeve to enable first sliding to occur between the outer sleeve and the inner sleeve, grouting through a grouting opening and a grouting pipe, and recording a first sliding distance;
(3) simulating the tunnel construction process after grouting reinforcement, pushing a push rod of the inner sleeve to enable the inner sleeve and the tunnel structure to generate second sliding, and recording a second sliding distance; the second sliding distance is smaller than the first sliding distance.
The whole process simulation device and the simulation method for tunnel reinforcement, lifting and excavation designed by the invention can simultaneously simulate the grouting lifting and excavation processes in the tunnel construction process, the relative sliding of the inner sleeve and the outer sleeve is matched with the grouting opening and the grouting pipe to simulate the grouting lifting process, and the relative sliding of the inner sleeve and the tunnel structure simulates the stratum loss in the tunnel construction process; in the test process, the inner sleeve and the outer sleeve can be stably led out. When the sleeve is gradually pushed out, the sleeve guiding device is completely matched with the shape and height of the sleeve, the sleeve can be pushed out in a stable and stable state, and the inner sleeve and the outer sleeve cannot incline.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of an initial state structure of a tunnel grouting simulation device;
FIG. 2 is a schematic structural diagram of a working state of the tunnel grouting simulation device;
FIG. 3 is a schematic view of an inner sleeve configuration;
FIG. 4 is a schematic view of the outer sleeve;
FIG. 5 is a schematic view of the connecting device;
FIG. 6 is a schematic view of the inner and outer sleeves in an initial state;
FIG. 7 shows the initial position relationship of the inner sleeve, the outer sleeve, the tunnel structure, the grouting ports and the grouting pipes;
FIG. 8 is a structural diagram of the inner and outer sleeves in an experimental state;
FIG. 9 shows the position relationship of the inner sleeve, the outer sleeve, the tunnel structure, the grouting ports and the grouting pipes in the working state;
FIG. 10 is an axial cross-sectional view of the lead attachment;
FIG. 11 is a schematic view of a groove structure of the inner sleeve;
figure 12 is a schematic view of the connection of the inner and outer sleeves.
In the figure, 1-1 part of a grouting opening, 1-2 parts of a grouting barrel, 1-3 parts of an inner sleeve, 1-4 parts of an outer sleeve, 2-1 parts of a grouting rod, 2-2 parts of an outer sleeve body, 2-3 parts of an outer sleeve bottom plate, 3-1 parts of a push rod, 3-2 parts of an inner sleeve body, 3-3 parts of an inner sleeve bottom support, 3-4 parts of an inner sleeve bottom plate, 3-5 parts of a grouting rod hole, 4-1 parts of a tunnel structure, 4-2 parts of reinforcing grout, 5-1 parts of a guiding device body, 5-2 parts of a guiding device base, 6-1 parts of a groove, 6-2 parts of a guiding device base and a guiding groove are arranged.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-12, the simulation device for the whole process of tunnel grouting reinforcement, lifting and excavation comprises an inner sleeve 1-3, an outer sleeve 1-4 and a connecting and guiding device; in the present embodiment, the lead-in means are designed according to the outer diameter dimension of the outer sleeves 1-4 in the actual simulation situation.
As shown in fig. 5 and 10, the guiding device includes a guiding device body 5-1 and a guiding base 5-2, the guiding device body 5-1 is disposed on the guiding base 5-2, and the guiding device body 5-1 is provided with a guiding groove 6-2; in this embodiment, the guiding grooves are designed according to the size of the outer diameter of the outer sleeve 1-4, and the size of the guiding grooves is similar to the outer shell of the outer sleeve 1-4, so that the outer sleeve 1-4 and the inner sleeve 1-3 are integrally fixed on the guiding device.
As shown in fig. 4, the outer sleeve 1-4 comprises an outer sleeve body 2-2, a grouting rod 2-1 and an outer sleeve bottom plate 2-3, wherein the outer sleeve bottom plate 2-3 is arranged at one end of the outer sleeve body 2-2, the grouting rod 2-1 is arranged in the outer sleeve body 2-2, and one end of the grouting rod is fixed on the outer sleeve bottom plate 2-3; in this embodiment, preferably, the grouting rod 2-1 is a solid rod, two grouting rods 2-1 are provided, the grouting rod 2-1 is welded and fixed on the outer sleeve bottom plate 2-3, and the outer sleeve and the inner sleeve can slide relatively by pushing the grouting rod 2-1.
The outer sleeve 1-4 is partially embedded into the guide groove 6-2 of the guide device;
as shown in fig. 3, the inner sleeve 1-3 includes a push rod 3-1, an inner sleeve body 3-2, an inner sleeve bottom support 3-3, an inner sleeve bottom plate 3-4 and a grouting rod hole 3-5, the inner sleeve bottom plate 3-3 is arranged at one end of the inner sleeve body 3-2, the inner sleeve bottom plate 3-4 is arranged on the inner sleeve bottom support 3-3, the grouting rod hole 3-5 is arranged on the inner sleeve bottom plate 3-4, the push rod 3-1 is arranged in the inner sleeve body 3-2, and one end of the push rod is arranged on the inner sleeve bottom plate 3-4; in the embodiment, the ejector rod 3-1 is welded and fixed on the inner sleeve bottom plate 3-4; the inner sleeve bottom support 3-3 has two functions, firstly, the radial range of grouting is determined, and secondly, the loss caused by outflow of grout during grouting can be prevented.
The inner sleeve 1-3 is arranged in the outer sleeve 1-4, the grouting rod 2-1 penetrates through the grouting rod hole 3-5, and the outer sleeve bottom plate 2-3 is tightly attached to the inner sleeve bottom support 3-3. In the embodiment, the grouting rod 2-1 of the outer sleeve 1-4 passes through the grouting rod hole 3-5 on the inner sleeve bottom plate 3-4 and is welded and fixed on the outer sleeve bottom plate 2-3.
As shown in fig. 1, 2, 6-9, further, a grouting port 1-1 and a grouting pipe 1-2 are arranged on the inner wall of the outer sleeve body 2-2; one end of the grouting pipe 1-2 is fixed with the grouting opening 1-1. In the embodiment, one end of the grouting pipe 1-2 is inserted into the grouting opening 1-1, and the grouting opening 1-1 and the grouting pipe 1-2 are welded and fixed on the inner wall of the outer sleeve body 2-2.
Further, the axes of the inner sleeve 1-3 and the outer sleeve 1-4 are on the same straight line.
As shown in fig. 11 and 12, further, sliding rails are arranged in the outer sleeve 1-4 along the axial direction, sliding rail grooves are arranged on the outer side wall of the inner sleeve 1-3, and grooves 6-1 are arranged on the inner sleeve bottom support 3-3; the outer sleeve 1-4 passes through the groove 6-1 to be closely attached to the inner sleeve 1-3, and the outer sleeve 1-4 and the inner sleeve 1-3 slide relatively through the slide rail grooves and the slide rails. In this embodiment, it is preferable that the grooves are pre-arranged on the inner sleeve bottom support 3-3, and in an initial state, the outer sleeve slide rail of the outer sleeve 1-4 is clamped into the groove 6-1 reserved on the inner sleeve bottom support and combined with the slide rail groove on the outer wall of the inner sleeve 1-3, so as to realize stable relative sliding between the outer sleeve 1-4 and the inner sleeve 1-3 without axial direction change.
Further, the outer sleeve bottom plate 2-3 is matched with the inner sleeve bottom plate 3-3.
As shown in fig. 1 and 2, fig. 6 to 9 show a simulation method of a tunnel grouting reinforcement, lifting and excavation overall process simulation device based on the disclosure of the present invention, which includes:
(1) in an initial state, sleeving an inner sleeve 1-3 on a tunnel structure, sleeving a grouting rod of an outer sleeve 1-4 on the inner sleeve 1-3 through a grouting rod hole 3-5 of a bottom plate 3-4 of the inner sleeve, matching the bottom plate of the outer sleeve 1-4 with the bottom plate of the inner sleeve 1-3, enabling the edge of the outer sleeve to penetrate through a groove 6-1 of the bottom plate 3-3 of the inner sleeve, realizing stable sliding, and integrally embedding the inner sleeve 1-3 and the outer sleeve 1-4 into a guide groove of a guide device; in the embodiment, in an initial state, a grouting rod 2-1 penetrates through a grouting rod hole 3-5 in an inner sleeve bottom plate 3-4 to be welded and fixed on an outer sleeve bottom plate 2-3, an inner sleeve 1-3 is in contact with the bottom of an outer sleeve 1-4, a grouting opening 1-1 is connected with a grouting pipe 1-2 and is welded and fixed on the inner side of the outer sleeve wall, the outer circle of an inner sleeve bottom support 3-3 is attached to the inner wall of the outer sleeve 1-4, the inner sleeve 1-3 is sleeved on a newly-built tunnel structure 4-1, the tunnel structure 4-1 has no unified standard, and the thickness of the inner sleeve is designed according to actual conditions to simulate stratum loss caused by excavation. Wherein, the axial part of the outer sleeve 1-4 is embedded into the lead-in groove of the lead-in device, the lead-in groove is completely matched with the shape and height of the sleeve, thus ensuring that the inner sleeve and the outer sleeve do not change along the axial direction under the condition that the lead-in device is fixed. The outer wall of the tunnel structure 4-1 is closely attached to the inner wall of the inner sleeve 1-3, one end of the ejector rod and one end of the grouting rod are connected into a hydraulic machine, the whole device is fixed in a prefabricated model box, the model box is designed according to actual conditions, and the whole device is placed in a soil layer according to the design conditions.
(2) Simulating a grouting lifting process, pushing a grouting rod 2-1 of an outer sleeve 1-4 to enable first sliding to occur between the outer sleeve 1-4 and an inner sleeve 1-3, grouting through a grouting opening 1-1 and a grouting pipe 1-2, and recording a first sliding distance; in the embodiment, firstly, the grouting rod 2-1 is pushed to enable the outer sleeve 1-4 and the inner sleeve 1-3 to relatively slide, the sliding distance is designed according to the actual simulation condition, the relative position of the inner sleeve 1-3 and the tunnel structure 4-1 is unchanged, grouting is carried out through a grouting opening 1-1 and a grouting pipe 1-2 in a gap between the inner sleeve and the outer sleeve, and the grouting amount is determined according to the actual simulation condition. The distance between the inner sleeve and the outer sleeve is the grouting reinforcement thickness, the sector area of the cross section of the outer sleeve is the grouting range, the pressure provided by the grouting pipe is the simulated actual grouting lifting pressure, the grout becomes reinforced grout 4-2 after a certain time, and the grout reinforcement process can be used for simulating the tunnel grouting reinforcement process in the actual construction process.
(3) Simulating the tunnel construction process after grouting reinforcement, pushing the ejector rod 3-1 of the inner sleeve 1-3 to enable the inner sleeve 1-3 and the tunnel structure to slide for the second time, and recording the second sliding distance; the second sliding distance is smaller than the first sliding distance. In the embodiment, after the grouting process is finished, the tunnel construction process is simulated, the position of the outer sleeve after simulated reinforcement and lifting is kept unchanged, the ejector rod of the inner sleeve is pushed, so that the inner sleeve and the tunnel structure 4-1 slide for the second time, and the sliding distance is determined according to the actual simulated construction condition and is not greater than the first sliding distance between the outer sleeve and the inner sleeve. The stratum loss caused by tunnel excavation can be determined, the simulation of the tunnel excavation is mainly realized by simulating the relative sliding between the inner sleeve and the tunnel structure, the inner sleeve slides from the outer surface of the tunnel to generate a gap between the soil layer and the tunnel structure, so that the thickness of the inner sleeve is equivalent to the stratum loss, and the thickness of the inner sleeve can be determined according to the designed stratum loss.
In the embodiment, in the initial state, the inner sleeve is contacted with the bottom plate of the outer sleeve, and the edge of the outer sleeve penetrates through the reserved groove of the inner sleeve bottom support, so that stable sliding can be realized; the inner sleeve is sleeved on the tunnel structure, the outer wall of the tunnel structure is tightly attached to the inner wall of the inner sleeve, one end of the ejector rod and one end of the grouting rod are connected into a hydraulic machine, the whole device is fixed in a prefabricated model box, the model box is designed according to actual simulation conditions, and the device is placed in a soil layer according to the design conditions.
After the test is started, firstly, a grouting lifting stage is simulated, a grouting rod is pushed to enable the outer sleeve and the inner sleeve to slide relatively, the sliding distance is determined according to the actual simulation condition, the relative position of the inner sleeve and the tunnel structure is kept unchanged, grouting is conducted through a grouting opening and a gap between the grouting pipe and the inner sleeve and the outer sleeve, and the grouting amount is determined according to the actual simulation condition. The distance between the inner sleeve and the outer sleeve is the grouting reinforcement thickness, the sector of the cross section of the outer sleeve is the grouting range, and the pressure provided by the grouting pipe simulates the actual grouting lifting pressure.
After the grouting process is finished, the tunnel construction process is simulated, the position of the outer sleeve is kept unchanged after grouting lifting, and the ejector rod of the inner sleeve is pushed, so that the inner sleeve and the tunnel structure slide for the second time, the sliding distance is determined according to the actual simulation design condition, and the sliding distance is not greater than the sliding distance between the outer sleeve and the inner sleeve.
The invention relates to a tunnel grouting reinforcement, lifting and excavation overall process simulation device, wherein the relative sliding of an inner sleeve and an outer sleeve is matched with a grouting opening and a grouting pipe to simulate a grouting lifting process, and the relative sliding of the inner sleeve and a tunnel simulates stratum loss in a tunnel construction process; the grouting range can be determined, the structural shape of the outer sleeve is designed in advance, the transverse range during grouting is ensured, the radial range of grouting is determined through the bottom support of the inner sleeve, and the loss caused by slurry outflow can be prevented; the slurry becomes reinforced slurry after a certain time, and the slurry reinforcing process can be used for simulating the reinforcing process of tunnel grouting in the actual construction process; the stratum loss caused by tunnel excavation can be determined, the simulation of tunnel excavation is mainly through the relative sliding simulation of the inner sleeve and the tunnel structure, the inner sleeve slides from the outer surface of the tunnel structure to generate a gap between the soil layer and the tunnel structure, therefore, the thickness of the inner sleeve is equivalent to the stratum loss, and the thickness of the inner sleeve can be determined according to the stratum loss designed by actual simulation, therefore, the stratum loss can be determined; in the test process, the inner sleeve and the outer sleeve can be stably led out. When the sleeve is gradually pushed out, the sleeve guiding device is completely matched with the shape and the height of the sleeve, so that the sleeve can be stably pushed out and is stable in a centrifugal force field, and the situation that the sleeve inclines and the like cannot occur.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A tunnel grouting reinforcement, lifting and excavation overall process simulation device is characterized by comprising an inner sleeve (1-3), an outer sleeve (1-4) and a connecting and guiding device;
the connecting and leading device comprises a connecting and leading device body (5-1) and a connecting and leading base (5-2), wherein the connecting and leading device body (5-1) is arranged on the connecting and leading base (5-2), and a connecting and leading groove (6-2) is arranged on the connecting and leading device body (5-1);
the outer sleeve (1-4) comprises an outer sleeve body (2-2), a grouting rod (2-1) and an outer sleeve bottom plate (2-3), the outer sleeve bottom plate (2-3) is arranged at one end of the outer sleeve body (2-2), the grouting rod (2-1) is arranged in the outer sleeve body (2-2), and one end of the grouting rod is fixed on the outer sleeve bottom plate (2-3);
the outer sleeve (1-4) is partially embedded into the lead-in groove (6-2);
the inner sleeve (1-3) comprises a push rod (3-1), an inner sleeve body (3-2), an inner sleeve bottom support (3-3), an inner sleeve bottom plate (3-4) and a grouting rod hole (3-5), the inner sleeve bottom support (3-3) is arranged at one end of the inner sleeve body (3-2), the inner sleeve bottom plate (3-4) is arranged on the inner sleeve bottom support (3-3), the grouting rod hole (3-5) is formed in the inner sleeve bottom plate (3-4), the push rod (3-1) is arranged in the inner sleeve body (3-2), and one end of the push rod is arranged on the inner sleeve bottom plate (3-4);
the inner sleeve (1-3) is arranged in the outer sleeve (1-4), the grouting rod (2-1) penetrates through the grouting rod hole (3-5), and the outer sleeve bottom plate (2-3) is tightly attached to the inner sleeve bottom support (3-3).
2. The tunnel grouting reinforcement, lifting and excavation overall process simulation device as claimed in claim 1, wherein the inner wall of the outer sleeve body (2-2) is provided with a grouting port (1-1) and a grouting pipe (1-2); one end of the grouting pipe (1-2) is fixed with the grouting opening (1-1).
3. A tunnel grouting reinforcement, lifting and excavation full process simulation device according to claim 1, characterized in that the axial centers of the inner sleeve (1-3) and the outer sleeve (1-4) are on the same line.
4. The tunnel grouting reinforcement, lifting and excavation overall process simulation device as claimed in claim 1, wherein slide rails are arranged in the outer sleeves (1-4) along the axial direction, slide rail grooves are arranged on the outer side walls of the inner sleeves (1-3), and grooves (6-1) are arranged on inner sleeve bottom supports (3-3); the outer sleeve (1-4) penetrates through the groove (6-1) and is tightly attached to the inner sleeve (1-3), and the outer sleeve (1-4) and the inner sleeve (1-3) slide relatively through the slide rail groove and the slide rail.
5. The device for simulating the whole process of grouting reinforcement, lifting and excavation of a tunnel according to claim 1, characterized in that the outer sleeve bottom plate (2-3) is matched with the inner sleeve bottom plate (3-3).
6. A simulation method of the whole process simulation device for tunnel grouting reinforcement, lifting and excavation based on any one of claims 1 to 5 is characterized by comprising the following steps of:
(1) in an initial state, sleeving an inner sleeve (1-3) on a tunnel structure, sleeving a grouting rod of an outer sleeve (1-4) on the inner sleeve (1-3) after penetrating through a grouting rod hole (3-5) of a bottom plate (3-4) of the inner sleeve, matching the inner sleeve bottom support (1-3) with the bottom plate of the outer sleeve (1-4), penetrating the edge of the outer sleeve into a groove (6-1) of the inner sleeve bottom support (3-3), and integrally embedding the inner sleeve (1-3) and the outer sleeve (1-4) into a guide groove of a guide device;
(2) simulating a grouting lifting process, pushing a grouting rod (2-1) of an outer sleeve (1-4) to enable the outer sleeve (1-4) and an inner sleeve (1-3) to slide firstly, grouting through a grouting opening (1-1) and a grouting pipe (1-2), and recording a first sliding distance;
(3) simulating the tunnel construction process after grouting reinforcement, pushing a push rod (3-1) of the inner sleeve (1-3) to enable the inner sleeve (1-3) and the tunnel structure to slide for the second time, and recording the second sliding distance; the second sliding distance is smaller than the first sliding distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110742240.9A CN113341109B (en) | 2021-06-30 | 2021-06-30 | Tunnel grouting reinforcement, lifting and excavation overall process simulation device and simulation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110742240.9A CN113341109B (en) | 2021-06-30 | 2021-06-30 | Tunnel grouting reinforcement, lifting and excavation overall process simulation device and simulation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113341109A true CN113341109A (en) | 2021-09-03 |
| CN113341109B CN113341109B (en) | 2023-02-24 |
Family
ID=77481992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110742240.9A Active CN113341109B (en) | 2021-06-30 | 2021-06-30 | Tunnel grouting reinforcement, lifting and excavation overall process simulation device and simulation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113341109B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168562A (en) * | 2010-08-13 | 2011-08-31 | 同济大学 | Control system for tunnel stratum loss and grouting simulation in centrifugal field |
| US20130103451A1 (en) * | 2011-10-19 | 2013-04-25 | Advanced Construction Techniques Ltd. | System and method for gathering, analyzing, managing and sharing ground modification operation data |
| CN105548504A (en) * | 2016-01-29 | 2016-05-04 | 天津大学 | Three-dimensional model tunnel test device for simulating tunnel excavation and compensation grouting process |
| CN107169225A (en) * | 2017-06-09 | 2017-09-15 | 浙江大学城市学院 | It is a kind of to simulate the apparatus and method that class rectangle shield driving causes Stratum Loss |
| CN108625865A (en) * | 2018-04-18 | 2018-10-09 | 上海工程技术大学 | A kind of test method of simulation shield tunnel construction |
| CN210127851U (en) * | 2019-05-22 | 2020-03-06 | 安徽省交通勘察设计院有限公司 | Simulation test device for simulating excavation construction of multiple shield tunnels |
| CN211949636U (en) * | 2020-01-07 | 2020-11-17 | 上海城建市政工程（集团）有限公司 | Device for realizing integrated operation of grouting and sealing |
| CN112485125A (en) * | 2020-11-23 | 2021-03-12 | 山东建筑大学 | Tunnel model test device and method capable of controlling soil loss rate |
-
2021
- 2021-06-30 CN CN202110742240.9A patent/CN113341109B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168562A (en) * | 2010-08-13 | 2011-08-31 | 同济大学 | Control system for tunnel stratum loss and grouting simulation in centrifugal field |
| US20130103451A1 (en) * | 2011-10-19 | 2013-04-25 | Advanced Construction Techniques Ltd. | System and method for gathering, analyzing, managing and sharing ground modification operation data |
| CN105548504A (en) * | 2016-01-29 | 2016-05-04 | 天津大学 | Three-dimensional model tunnel test device for simulating tunnel excavation and compensation grouting process |
| CN107169225A (en) * | 2017-06-09 | 2017-09-15 | 浙江大学城市学院 | It is a kind of to simulate the apparatus and method that class rectangle shield driving causes Stratum Loss |
| CN108625865A (en) * | 2018-04-18 | 2018-10-09 | 上海工程技术大学 | A kind of test method of simulation shield tunnel construction |
| CN210127851U (en) * | 2019-05-22 | 2020-03-06 | 安徽省交通勘察设计院有限公司 | Simulation test device for simulating excavation construction of multiple shield tunnels |
| CN211949636U (en) * | 2020-01-07 | 2020-11-17 | 上海城建市政工程（集团）有限公司 | Device for realizing integrated operation of grouting and sealing |
| CN112485125A (en) * | 2020-11-23 | 2021-03-12 | 山东建筑大学 | Tunnel model test device and method capable of controlling soil loss rate |
Non-Patent Citations (1)
| Title |
|---|
| "盾构隧道开挖及补偿注浆对地层扰动影响的室内 试验及数值模拟研究" * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113341109B (en) | 2023-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Talmon et al. | Calculation of longitudinal bending moment and shear force for Shanghai Yangtze River Tunnel: Application of lessons from Dutch research | |
| CN105334142B (en) | A kind of experimental provision formed for simulating shield mud film | |
| CN101725345B (en) | Device for simulating casing-cement sheath damage indoor test under stratum action | |
| CN106840977A (en) | Slurry filling imitation device | |
| CN108709977A (en) | A kind of ground preloading influences the indoor model test device and test method of existing subway tunnel | |
| CN103000068A (en) | Tunnel construction process simulating test method | |
| CN102278117A (en) | Parallel pipe jacking construction simulation device | |
| CN203701157U (en) | Inner support clamp of simple geotechnical centrifuge for simulating pit excavation experiment | |
| CN109975117B (en) | Push pipe experiment box and experiment method | |
| CN105865820A (en) | Laboratory test device for simulating deep roadway excavation and method | |
| CN107045044A (en) | A kind of pullout type model test apparatus and method for simulating Shield Tunneling mortar depositing construction | |
| CN112485125B (en) | Tunnel model test device and method capable of controlling soil loss rate | |
| CN208902713U (en) | Ground preloading influences the indoor model test device of existing subway tunnel | |
| CN110284530A (en) | In conjunction with the Multifunctional assembled model test case apparatus and application in foundation pit and tunnel | |
| CN205538273U (en) | A indoor test device for simulating deep tunnel excavation | |
| CN114935465A (en) | System for simulating disturbance of shield construction to existing pile foundation and implementation method | |
| CN106499384A (en) | Coal bed gas directional well injection/pressure fall-off test test device and its method | |
| CN106013274A (en) | Pile foundation horizontal load comprehensive simulation test device for deep foundation pit excavation unloading field | |
| CN208818567U (en) | A kind of experimental rig for simulating Shield-bored tunnels section of jurisdiction primary stress | |
| CN206891872U (en) | For simulating the device of mine floor water barrier crack evolution | |
| CN113341109B (en) | Tunnel grouting reinforcement, lifting and excavation overall process simulation device and simulation method | |
| CN209841546U (en) | Pipe jacking experiment box | |
| CN114593927B (en) | Method for carrying out prototype test of shield tunnel by using middle wind well | |
| CN209841650U (en) | Pipe jacking of pipe jacking experimental box | |
| CN108918254A (en) | Simulate the experimental rig and method of Shield-bored tunnels section of jurisdiction primary stress |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |