CN114755397B - Simulation test device based on full-angle grouting and application method - Google Patents
Simulation test device based on full-angle grouting and application method Download PDFInfo
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- 238000004088 simulation Methods 0.000 title claims abstract description 25
- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002689 soil Substances 0.000 claims abstract description 47
- 239000002002 slurry Substances 0.000 claims abstract description 38
- 239000013307 optical fiber Substances 0.000 claims abstract description 25
- 230000008859 change Effects 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000002390 adhesive tape Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 abstract description 5
- 238000000429 assembly Methods 0.000 abstract description 5
- 238000002474 experimental method Methods 0.000 description 10
- 239000000835 fiber Substances 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007596 consolidation process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- 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
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
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Abstract
The invention discloses a simulation test device based on full angle grouting and a use method thereof, the simulation test device comprises a grouting assembly and a filling assembly, wherein two groups of positioning clamping plates of the grouting assembly are arranged in parallel at the middle position above a base, the distance between the two groups of positioning clamping plates is not smaller than the outer diameter of a grouting pipe, the positioning clamping plates are used for arranging the grouting pipe, and simultaneously the bottom of the grouting pipe is hinged at the bottom center position of the base and extends downwards, so that the upper end part of the grouting pipe rotates by taking the bottom hinge position as the center; the optical fiber assemblies of the filling assembly are provided with a plurality of groups and are distributed along the inner wall where the pipeline is located, and meanwhile, the optical fiber assemblies are used for testing the pressure change of soil mass filled in the pipeline and the pressure change condition of slurry flowing down through the slurry at equal intervals. The grouting pipe of the grouting assembly is designed into adjustable grouting with an angle of 0-360 degrees, meanwhile, the filling assembly is filled with a soil layer in a simulation environment, and the real pressure change of the soil layer in the filling assembly is conveniently monitored through a simulation test under the grouting angle of 0-360 degrees.
Description
Technical Field
The invention belongs to the technical field of grouting, and particularly relates to a simulation test device based on full angle grouting and a use method thereof.
Background
The foundation has great influence on the building, tunnel excavation and other conditions are often encountered in the construction process, as the excavation of different soil bodies sometimes even encounters slurry leakage, stratum collapse and other conditions in tunnel excavation, the excavation of old or important buildings above the bottom layer facing the excavation needs to be paid attention, and for the conditions, grouting reinforcement is a method for reinforcing the soil bodies, which is generally adopted, in the grouting reinforcement method, slurry is uniformly injected into the stratum through a grouting pipe by utilizing the principles of hydraulic pressure, air pressure or electrochemistry, the slurry occupies other positions after water and air in soil particles or rock gaps are removed in a filling, penetrating and compaction mode and the like, and after manual control is carried out for a period of time, the slurry bonds the original loose soil particles and gaps into a whole body to form a 'stone body' with novel structure, high strength, stable waterproof performance and good chemical performance.
Although the method for reinforcing the soil body by grouting is widely applied, in practical application, as slurry flows in an impermeable soil body, the flow direction, the seepage length and the consolidation time of the slurry cannot be determined, according to the existing research, the flow direction, the seepage length and the consolidation time of the slurry are related to various factors, so far, no accurate experimental method is available for determining the trend of the slurry in the foundation soil body, most of the method is determined empirically in construction, although the material of the slurry is studied mostly, the influence on the grouting angle is still an uncertain factor, and the factors such as the grouting angle, the time and the like under the conditions cannot be well controlled, so that the problems of slurry waste, non-uniformity of grouting reinforcement, poor soil body reinforcing effect and the like are caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a simulation test device based on full angle grouting and a use method thereof, which solve the technical problems in the prior art.
The aim of the invention can be achieved by the following technical scheme:
the simulation test device based on full angle grouting comprises a grouting assembly and a filling assembly, wherein the grouting assembly comprises a base, two positioning clamping plates, a grouting pipe and a positioning block, the two positioning clamping plates are arranged in parallel at the middle position above the base, the distance between the two positioning clamping plates is not smaller than the outer diameter of the grouting pipe, the two positioning clamping plates are used for setting the grouting pipe, and meanwhile, the bottom of the grouting pipe is hinged at the bottom center position of the base and extends downwards, so that the upper end of the grouting pipe rotates by taking the bottom hinge position as the center, and a slurry monitor is arranged at the top of the grouting pipe, so that the grouting pipe is connected with the grouting pipe and monitors slurry at any time;
the outer edge of the upper end part of the grouting pipe is fixedly provided with a positioning block, the positioning block is provided with a locking bolt, and the positioning block fixedly provided with the grouting pipe is fixed with a positioning clamping plate through the locking bolt, so that the angle of the grouting pipe is fixed during deflection;
the filling group comprises a pipeline, locking pieces and an optical fiber assembly, the pipeline is composed of two groups of half shell structures, the top of the pipeline is of an open penetrating tubular structure, the two groups of half shell outer diameters are locked through the locking pieces, a base of the grouting assembly is arranged at the open position of the upper end of the pipeline, the optical fiber assembly is provided with a plurality of groups and is distributed along the inner wall of the pipeline, meanwhile, the optical fiber assembly is used for testing pressure changes of soil layers and slurry of the pipeline at equal intervals, and monitored data are output to an external controller.
Further, the base is provided with a notch outwards from the center of the bottom, so that the width of the notch is the same as the interval between the two groups of locating splints.
Further, the locating clamp plate is arranged to be of a semicircular structure, an angle scale is arranged along the semicircular arc edge where the locating clamp plate is located, the lower surface where the locating block is located is arranged to be of an arc surface structure, and the arc of the lower surface where the locating block is located is identical to that of the upper surface where the locating clamp plate is located.
Furthermore, the locking bolt is arranged on the upper surface of the positioning block, and the deflection angle of the grouting pipe is fixed by adjusting the contact distance between the locking bolt and the upper surface of the positioning clamping plate.
Furthermore, the pipeline is made of transparent resin materials.
Furthermore, the connecting part of the half shell body where the pipeline is positioned is connected in a Z-shaped lap joint mode, and meanwhile, a waterproof adhesive tape is arranged on the inner edge of the upper end part where the pipeline is positioned in a joint mode.
Further, the inner side of the optical fiber assembly where the pipeline is located is coated with a layer of air and water permeable resin layer for isolating the optical fiber assembly from the filled soil body layer.
Further, a layer of porous steel plate with the same inner diameter as the pipeline is arranged at the bottom of the pipeline half shell, and the pore diameter density of the porous steel plate is 20ppi and the pore diameter is 0.8.
Furthermore, the bottom diameter width of the grouting assembly is the same as the top diameter width of the pipeline, and the grouting assembly is fixed through the locking pieces at the side edge of the top of the pipeline, so that the lower end part of the grouting pipe is communicated with the connecting port at the upper end part of the pipeline. The overlap joint of the pipeline and the grouting component is provided with rubber sealing waterproof.
The scheme also provides a simulation test method based on the full angle grouting, the method uses the simulation test device based on the full angle grouting, and the method comprises the following steps:
s1, firstly, arranging an optical fiber assembly from top to bottom in the pipeline, communicating with an external controller, paving a breathable and water-permeable resin layer for isolation, filling a soil layer into the pipeline, combining the pipelines of the two half-shells, and fixing the pipelines by adopting three groups of locking pieces;
s2, integrally fixing the grouting assembly at the upper end part of the pipeline, and communicating the lower end part of the grouting pipe with a connecting port at the upper end part of the pipeline;
s3, adjusting the relative deflection angle of the grouting pipe at the upper end part of the positioning clamping plate, and fixing the adjusting angle position of the grouting pipe by adopting a locking bolt on a positioning block;
s4, externally connecting a grouting pipeline to the upper end part of the grouting pipe with a fixed angle, and acquiring data of an optical fiber assembly in the pipeline in real time through grouting;
s5, adjusting the relative deflection angle of the grouting assembly and the filling assembly, adjusting the relative deflection angle of the grouting pipe, and re-grouting, so that multi-angle grouting data acquisition can be realized.
The invention has the beneficial effects that:
1. the device designs the grouting pipe of the grouting assembly into 0-360-degree full-angle adjustable grouting, and simultaneously arranges the soil layer and the optical fiber in the filling simulation environment in the filling assembly, so that the real pressure change of the soil layer and the slurry in the filling assembly under the 0-360-degree full-angle grouting angle can be conveniently monitored through a simulation test.
2. The grouting assembly of the device adjusts the angle of the grouting pipe between the clamping plates according to experimental requirements, the grouting pipe is fixed by the locking bolt, the locking bolt is tightly screwed on the clamping plates, and huge pressure generated during grouting can be prevented from causing the grouting pipe to deviate so as to influence the experiment.
3. The grouting component of the device can monitor the change condition of the slurry at any time in the experiment, and can consider the flow velocity and the pressure value of the slurry into the influence factors of the experimental effect to perform more omnibearing experiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic overall structure of an embodiment of the present invention;
FIG. 2 is a schematic view of the overall construction of a grouting assembly according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a grouting assembly according to an embodiment of the invention;
FIG. 4 is a schematic view of a piping structure according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a pipe in a cross-sectional connection state according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the embodiment of the invention provides a simulation test device based on full angle grouting, which comprises a grouting assembly 1 and a filling assembly 2, wherein as shown in fig. 2-3, the grouting assembly 1 comprises a base 11, a positioning clamping plate 12, a grouting pipe 13, a positioning block 14 and a slurry monitor 131, the base 11 is provided with a notch 111 outwards from the center of the bottom, so that the width of the notch 111 is the same as the interval between two groups of positioning clamping plates 12. The locating clamp plates 12 are two groups and are arranged in parallel at the middle position above the base 11, the distance between the two groups of locating clamp plates 12 is not smaller than the outer diameter of the grouting pipe 13, the locating clamp plates 12 are arranged to be of a semicircular structure, meanwhile, an angle disc 121 is arranged along the semicircular arc edge of the locating clamp plates 12, the lower surface of the locating block 14 is of an arc structure, the radian of the lower surface of the locating block is identical to that of the upper surface of the locating clamp plates 12, and the actual deflection angle of the grouting pipe 13 is observed from the angle disc 121 more intuitively by adjusting the deflection of the grouting pipe 13.
Simultaneously, the bottom of the grouting pipe 13 is hinged to the bottom center position of the base 11 and extends downwards, so that the upper end of the grouting pipe 13 rotates by taking the bottom hinge position as the center, the grouting angle of the lower end is changed by adjusting the deflection displacement of the upper end of the grouting pipe 13, the slurry monitor 131 is arranged at the top of the grouting pipe 13 according to the requirement, the grouting pipe 13 is connected with an externally connected slurry conveying pipe, slurry is monitored at any time, and meanwhile, the flow rate monitoring device is also arranged to monitor the flow rate and pressure change condition of the slurry at any time in an experiment.
The outer edge of the upper end part of the grouting pipe 13 is fixedly provided with a positioning block 14, the positioning block 14 is provided with a locking bolt 141, the positioning block 14 fixed with the grouting pipe 13 is fixed with the positioning clamping plate 12 through the locking bolt 141, at the moment, the lower end part of the grouting pipe 13 is hinged and fixed, and the grouting pipe 13 fixed on the positioning block 14 generates outward tension extrusion to the positioning clamping plate 12 through adjusting the locking bolt 141, so that the fixing of the relative position of the grouting pipe 13, namely the fixing of the angle when the grouting pipe 13 deflects, is realized. When the grouting pipe 13 needs to be loosened, the locking bolts 141 are loosened, and the positioning blocks 14 and the positioning clamping plates 12 can be separated from each other, so that the grouting pipe 13 is deflected along the gap between the two groups of positioning clamping plates 12, and grouting with an angle of 0-360 degrees is achieved.
As shown in fig. 4 and 5, the packing assembly 2 includes a pipe 21, a locking member 22 and an optical fiber assembly 23, the pipe 21 is composed of two groups of half-shell structures, and the connection parts of the half-shells where the pipe 21 is located are connected in a Z-type lap joint mode, so that the lap joint can improve the stability during connection, and meanwhile, a rubber cushion layer is arranged at the Z-type lap joint part, and can be sealed and waterproof during experiment. And the two sets of half shells are locked by the locking piece 22 in the outer diameter (in order to improve the connection firmness of the pipelines 21 of the two sets of half shells, the number of the locking pieces 22 and the width of the locking pieces 22 can be properly increased), the top of the pipeline 21 is of an open penetrating tubular structure, the outer diameter of the bottom base 11 where the grouting assembly 1 is located is equal to the radius of the opening at the upper end where the pipeline 21 is located, and meanwhile, a layer of waterproof adhesive tape 201 is arranged between the pipeline 21 and the base 11 and used for preventing slurry between the pipeline 21 and the base 11 from overflowing in a fastening state. The grouting assembly 1 is then fixed by the locking pieces 203 on the side edges of the top of the pipeline 21, so that the lower end part of the grouting pipe 13 is communicated with the soil layer on the upper end part where the pipeline 21 is positioned, and meanwhile, the rotation of the upper end part where the pipeline 21 is positioned is regulated, thereby realizing the deflection angle change of the grouting pipe 13 relative to the pipeline 21, and being capable of achieving the deflection within the range of 0-360 degrees.
The grouting pipe 13 stretches out downwards and with the soil body layer of pipeline 21 place upper end, the position that contacts between grouting assembly 1 and the experiment pipeline 21 is equipped with waterproof and the sealing when rubber carries out the slip casting simultaneously, increase the leakproofness of junction, fiber optic assembly 23 is provided with the multiunit and lays along the inner wall at pipeline 21 place, the inboard coating one deck ventilative water permeability resin layer of fiber optic assembly 23 at pipeline 21 place for keep apart fiber optic assembly 23 and the soil body layer of packing, avoid the sensitivity influence to fiber optic assembly 23 when the soil body layer is perfused the thick liquid, protect fiber optic assembly 23. In addition, the air-permeable and water-permeable resin layer can enable the flow direction and the change condition of the slurry and the pressure change condition of the soil body layer to be sensed in real time while protecting the optical fiber assembly. Meanwhile, the optical fiber assemblies 23 are used for testing the pressure distribution and change conditions of the soil layer filled in the pipeline 21 in the process of slurry seepage and diffusion at equal intervals (at the moment, the soil layer is made of gravel, soil layers and the like according to proportion, so as to simulate the actual conditions of the soil layer in different environments), the optical fiber assemblies 23 can be arranged to be provided with pressure sensors at intervals of one centimeter so as to sense the change of the soil layer pressure and the flow of slurry in the soil, and monitored data are output to an external controller outwards so as to acquire the data.
The pipe 21 is made of transparent resin material as required, so that the condition inside the soil layer can be intuitively observed. The bottom that pipeline 21 semi-shell body is located sets up the porous steel sheet 202 that one deck and pipeline 21 internal diameter equal, and the border that porous steel sheet 202 was located is provided with the adhesive tape that laminates mutually with pipeline 21 inner wall, plays the waterproof effect, and porous steel sheet 202's aperture density 20ppi, aperture rate 0.8 play the bottom support effect to pipeline 21, ensure that soil body inside hole and external atmosphere intercommunication.
The device simplifies the complex three-dimensional experiment into a one-dimensional experiment, and presumes and simulates two-dimensional, three-dimensional and real conditions by researching the condition of slurry in soil in one-dimensional direction. In the one-dimensional simulation experiment, although the soil layer is one-dimensional, different incidence directions or angles can have different influences on the seepage of the slurry in the soil, so that a device capable of carrying out full-angle incidence of the slurry is needed for the full-angle grouting experiment in the one-dimensional direction in a laboratory.
The test method of the simulation test device based on full angle grouting comprises the following steps:
s1, firstly, an optical fiber assembly 23 is arranged in the pipeline 21 and is communicated with an external controller, a resin layer is paved for isolation, then a soil layer (the soil layer is an actual soil layer under the condition of analog simulation) is filled in the pipeline 21, and the pipelines 21 of the two groups of half shells are combined and fixed by adopting a locking piece 22.
S2, the grouting assembly 1 is integrally fixed at the upper position of the pipeline 21, the lower end part of the grouting pipe 13 is communicated with a soil layer at the upper end part of the pipeline 21, the upper part of the grouting pipe 13 is communicated with the slurry monitor 131, and the other end of the slurry monitor 131 is communicated with an externally connected slurry conveying pipe.
S3, the relative deflection angle (the angle deflection within 0-90 degrees can be realized) of the grouting pipe 13 at the upper end part of the positioning clamp plate 12 is adjusted, the angle adjusting position of the grouting pipe 13 is fixed by adopting a locking bolt 141 on a positioning block 14, and the actual deflection angle of the grouting pipe 13 is read by an angle disc 121 on the positioning clamp plate 12.
S4, externally connecting a grouting pipeline to the upper end part of the grouting pipe 13 with a fixed angle, and feeding back data acquired through the optical fiber assembly 23 in the pipeline 21 by flowing grouting liquid in the pipeline 21 and generating pressure change on a soil layer.
S5, adjusting the relative deflection angle of the grouting assembly 1 and the filling assembly 2 (the grouting assembly can be fixed after 360-degree full-angle adjustment of the relative position is realized), so that the relative deflection angle of the grouting pipe 13 relative to a soil layer in the filling assembly 2 is adjusted, grouting is performed again, and finally grouting adjustment of the grouting pipe 13 in 0-360 degrees is realized, and multi-angle grouting data acquisition can be realized.
Simulation test shows that:
that is, the test was conducted taking the grouting rate of the grouting pipe 13 as 5L/min and the grouting time as 2min as an example. The viscosity of cement slurry is 0.58 Pa.s, the viscosity of slurry is basically unchanged in the grouting process, the wavelength is monitored by the optical fiber, an optical fiber pressure monitoring point is arranged in a range of 20cm by taking the soil sample height of 2m as an example, the monitoring frequency is 10s, and the wavelength monitoring result and the pressure conversion result are respectively shown in the table 1 below.
TABLE 1
As can be seen from Table 1, the fiber optic assemblies are effective in monitoring pressure data during grouting and feeding back to the control center for comparison.
The full-angle grouting equipment is used for researching the seepage length of slurry in soil, sand and stones in a laboratory, can conduct research on different results obtained by incidence of different angles (0-360 degrees) in one dimension so as to be used for researching foundation soil reinforcement in an actual building site, can simulate the full-angle through one equipment for researching different angles, changes the limit of the incidence angle of a grouting pipe in the past, and simulates seepage of one-dimensional grouting more comprehensively and more completely.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims.
Claims (6)
1. The simulation test device based on full angle grouting comprises a grouting assembly (1) and a filling assembly (2), and is characterized in that the grouting assembly (1) comprises a base (11), two positioning clamping plates (12), a grouting pipe (13) and a positioning block (14), wherein the two positioning clamping plates (12) are arranged in parallel at the middle position above the base (11), the interval between the two positioning clamping plates (12) is not smaller than the outer diameter of the grouting pipe (13) and is used for setting the grouting pipe (13), and meanwhile, the bottom of the grouting pipe (13) is hinged to the bottom center position of the base (11) and extends downwards, so that the upper end part of the grouting pipe (13) rotates by taking the bottom hinge position as the center;
the outer edge of the upper end part of the grouting pipe (13) is fixedly provided with a positioning block (14), the positioning block (14) is provided with a locking bolt (141), and the positioning block (14) fixedly provided with the grouting pipe (13) is fixed with a positioning clamping plate (12) through the locking bolt (141), so that the angle of the grouting pipe (13) is fixed during deflection;
the filling assembly (2) comprises a pipeline (21), a locking piece (22) and an optical fiber assembly (23), wherein the pipeline (21) is composed of two groups of half-shell structures, the top of the pipeline (21) is of an open penetrating tubular structure, the outer diameters of the two groups of half-shell structures are locked through the locking piece (22), a base (11) of the grouting assembly (1) is arranged at the open position of the upper end of the pipeline (21), the optical fiber assembly (23) is provided with a plurality of groups and is distributed along the inner wall of the pipeline (21), meanwhile, the optical fiber assembly (23) is used for testing the pressure change condition of soil mass layers filled in the pipeline (21) and slurry in the soil mass in the slurry seepage and diffusion process at equal intervals, and monitored data are output to the external controller;
the pipeline (21) is made of transparent hard resin materials, and a waterproof adhesive tape (201) is arranged on the edge of the upper end of the pipeline (21) in a fitting mode;
a layer of porous steel plate (202) with the same inner diameter as the pipeline (21) is arranged at the bottom of the half shell of the pipeline (21), and the porous steel plate (202) has the pore density of 20ppi and the pore diameter of 0.8;
the inner side of the optical fiber assembly (23) where the pipeline (21) is positioned is coated with a breathable and water-permeable resin layer for isolating the optical fiber assembly (23) from the filled soil body layer;
the bottom diameter width of the grouting assembly (1) is the same as the top diameter width of the pipeline (21), and the grouting assembly (1) is fixed through the locking piece (203) at the side edge of the top of the pipeline (21), so that the lower end part of the grouting pipe (13) is communicated with the upper end part of the soil body layer filled in the pipeline (21).
2. The full angle grouting-based simulation test device according to claim 1, wherein the base (11) is provided with a notch (111) from the bottom center outwards, so that the width of the notch (111) is the same as the interval between two groups of locating splints (12).
3. The simulation test device based on full angle grouting as claimed in claim 1, wherein the positioning clamp plate (12) is of a semicircular structure, an angle scale (121) is arranged along the semicircular arc edge where the positioning clamp plate (12) is located, and the lower surface where the positioning block (14) is located is of an arc structure and is the same as the arc of the upper surface where the positioning clamp plate (12) is located.
4. The simulation test device based on full angle grouting as claimed in claim 3, wherein the locking bolt (141) is arranged on the upper surface where the positioning block (14) is located, and the deflection angle of the grouting pipe (13) is fixed by adjusting the contact distance between the locking bolt (141) and the upper surface where the positioning clamping plate (12) is located.
5. Simulation test device based on full angle grouting as claimed in claim 1, characterized in that the half shell connection parts where the pipelines (21) are positioned are connected in a Z-shaped lap joint mode.
6. A full angle grouting-based simulation test method, characterized in that the method uses the full angle grouting-based simulation test apparatus as claimed in any one of claims 1 to 5, the method comprising the steps of:
s1, firstly, arranging an optical fiber assembly (23) from top to bottom in the pipeline (21), communicating with an external controller, paving a breathable and water-permeable resin layer for isolation, filling a soil layer into the pipeline (21), and combining the pipelines (21) of the two groups of half shells to fix by adopting a locking piece (22);
s2, integrally fixing the grouting assembly (1) at the upper end part of the pipeline (21), and communicating the lower end part of the grouting pipe (13) with the upper end part of the pipeline (21) filled with the soil layer;
s3, adjusting the relative deflection angle of the grouting pipe (13) at the upper end part of the positioning clamp plate (12), and fixing the adjusting angle position of the grouting pipe (13) by adopting a locking bolt (141) on a positioning block (14);
s4, externally connecting a grouting pipeline to the upper end part of the grouting pipe (13) with a fixed angle, and acquiring data of an optical fiber assembly (23) in the pipeline (21) in real time through grouting;
s5, adjusting the relative deflection angle of the grouting assembly (1) and the filling assembly (2), adjusting the relative deflection angle of the grouting pipe (13), and re-grouting, so that multi-angle grouting data acquisition can be realized.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005091299A (en) * | 2003-09-19 | 2005-04-07 | Nippon Ps:Kk | Grout quality management test device |
| CN103940968A (en) * | 2014-04-30 | 2014-07-23 | 山东大学 | Test bed device for tunnel excavating and grouting model and application method of device |
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| CN103940968A (en) * | 2014-04-30 | 2014-07-23 | 山东大学 | Test bed device for tunnel excavating and grouting model and application method of device |
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