CN217561260U - Grouting filling slurry diffusion distance simulation experiment device - Google Patents
Grouting filling slurry diffusion distance simulation experiment device Download PDFInfo
- Publication number
- CN217561260U CN217561260U CN202221174266.4U CN202221174266U CN217561260U CN 217561260 U CN217561260 U CN 217561260U CN 202221174266 U CN202221174266 U CN 202221174266U CN 217561260 U CN217561260 U CN 217561260U
- Authority
- CN
- China
- Prior art keywords
- slurry
- grouting
- layer
- flowing
- pipeline
- 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.)
- Active
Links
Images
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a simulation experiment device for diffusion distance of grouting filling slurry, which relates to the technical field of coal mining grouting filling, and comprises a slurry flowing unit, a slurry configuration unit, a slurry conveying unit and a data acquisition unit; the slurry flowing unit comprises a flowing pipeline, a slurry flowing layer, a single water permeable layer and a uniform water absorbing layer; the slurry preparation unit can prepare grouting filling slurry; the slurry conveying unit can convey the grouting filling slurry arranged by the slurry arranging unit to the starting end of the slurry flowing layer; the data acquisition unit can record the diffusion distance of the grouting filling slurry in the slurry flowing layer along with the change of time. The utility model has the advantages that: the method can be well applied to the diffusion simulation experiment of the grouting filling slurry in the cracks of the overlying strata isolation layer on the premise of high similarity.
Description
Technical Field
The utility model relates to a coal mining slip casting fills technical field, especially relates to a slip casting fills thick liquid diffusion distance simulation experiment device.
Background
Overburden rock isolation grouting filling is one of important components of a coal mine green mining technical system. In recent years, the coal pressing device plays an important role in solving the problem of coal pressing below a building, and gradually becomes an important means for solving the problem of mining and taking over of a mine enterprise. The method makes full use of the rock stratum movement law, and performs high-pressure grouting filling on the selected isolation layer cavity under the key layer, so that the injectable space is enlarged, the overlying strata form a compacted bearing structure, the key layer is supported, the ground subsidence is effectively controlled, and the ground structure is protected.
One of the key points of the technical research is the diffusion rule of the slurry in the overlying strata fracture. Due to the complexity of the actual formation, the existing in-situ test method cannot intuitively reflect the diffusion process of the slurry in the isolation layer. At present, an indoor simulation experiment is an important means for researching a slurry diffusion theory and a grouting technology, a traditional simulation experiment system meets the simulation requirement under a specific engineering background to a certain extent, but has a small simulation scale and insufficient similarity, and the design of the experiment system is usually simplified according to actual working condition characteristics. For example, under the condition of considering the similar size, the similar motion and the similar power of the experimental system, the time similarity is insufficient due to the limitation of a laboratory site, experimental equipment and the like. The fly ash slurry is a solid-liquid two-phase flow, and the slurry has obvious precipitation characteristics (the phenomenon that the slurry is continuously precipitated to form water-ash separation), so that the time similarity in the slurry flowing process is a key factor for determining the similarity. Meanwhile, although the traditional simulation experiment system can realize the simulation of the permeability characteristics of different isolation layers, the preparation and laying processes of the simulation materials are very complicated, and the forming time of the system is long, so that the simulation workload for multiple times of the flowing of the slurry by using the experiment system is very huge, and the simulation experiment system can not be realized basically. In conclusion, the traditional similarity simulation experiment only discusses the diffusion rule of the overburden grouting filling slurry on a qualitative level, and cannot be well applied to the multi-group diffusion simulation experiment research of the overburden isolation grouting filling slurry in the fracture of the isolation layer on the premise of high similarity.
The patent document with publication number CN110530762A discloses a grouting and solid-liquid diffusion test device, which comprises a test box body, a grouting pipe and grouting equipment; can fill the coal petrography appearance in the experimental box, the through-hole that supplies the slip casting pipe to stretch into experimental box inner chamber is seted up at the top of experimental box, and the lower extreme of slip casting pipe stretches into the surface of experimental box one end and has seted up the hole of permeating thick liquid, and the upper end of slip casting pipe is connected with the output of slip casting equipment thick liquid. The device has small simulation scale and insufficient similarity, and cannot be well applied to the multi-group diffusion simulation experiment research of the overburden rock isolation grouting filling slurry in the overburden rock isolation layer fracture on the premise of high similarity.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a diffusion simulation experiment's slip casting filling slurry diffusion distance simulation experiment device in overlying strata isolation layer crack can be applicable to the slip casting filling slurry under the high similarity prerequisite is provided.
The utility model discloses a realize solving above-mentioned technical problem through following technical means: the grouting filling slurry diffusion distance simulation experiment device comprises a slurry flowing unit, a slurry configuration unit, a slurry conveying unit and a data acquisition unit;
the slurry flowing unit comprises a flowing pipeline, a slurry flowing layer, a single water permeable layer, a uniform water absorbing layer and a graduated scale; the flow pipeline is transparent, and a graduated scale extending along the length direction of the flow pipeline is fixedly connected to the flow pipeline; a uniform water absorbing layer, a single permeable layer and a slurry flowing layer which extend along the length direction of the flowing pipeline are sequentially paved in the flowing pipeline from bottom to top;
the slurry configuration unit can configure grouting filling slurry;
the slurry conveying unit can convey the grouting filling slurry arranged by the slurry arrangement unit to the starting end of the slurry flowing layer;
the data acquisition unit comprises a humidity sensor, a humidity acquisition system, a camera and an image acquisition system; a humidity sensor inserted into the uniform water absorption layer is arranged at a certain distance along the length direction of the flow pipeline; each humidity sensor is respectively connected with the humidity acquisition system; the camera is directed at the flow conduit; the camera is connected with the image acquisition system.
Even layer that absorbs water can evenly absorb water, single permeable stratum only allows moisture to pass through and does not have the hydroscopicity, the infiltration condition of isolation layer can be simulated to the thick liquid mobile layer, the device fills the thick liquid diffusion for the slip casting and provides the simulated environment, the simulation yardstick is big, the similarity is high, can develop the slip casting according to research needs and fill thick liquid flow law simulation experiment, be applicable to the slip casting that fills under the high similarity prerequisite well and fill the diffusion simulation experiment of thick liquid in overlying strata isolation layer crack, it is big to have solved on-the-spot normal position test engineering volume, the difficult problem of high expense, reproduce the data that are difficult to actually measure through laboratory simulation, provide the foundation and refer to for engineering design and construction.
As an optimized technical scheme, the slurry flowing layer and the single water permeable layer can be detached.
As an optimized technical scheme, the flow pipeline comprises a plurality of groove pipelines, grooves which extend along the length direction of the flow pipeline and are provided with upward openings are arranged on the groove pipelines, the groove pipelines are sequentially arranged along the length direction of the flow pipeline and are communicated with each other, and the connection ends of the adjacent groove pipelines are fixedly connected through flanges; the slurry flowing unit further comprises a baffle plate, the baffle plate is sealed at the starting end of the flowing pipeline, a grouting hole is formed in the center of the baffle plate, and the position of the grouting hole corresponds to the starting end of the slurry flowing layer.
As an optimized technical scheme, the slurry flowing layer adopts cement ash, coarse sand stone, fine sand stone and water as raw materials, the particle size of the fine sand stone is 1.6-4 mm, and the particle size of the coarse sand stone is 10-30 mm.
As an optimized technical scheme, the single water permeable layer adopts a copper alginate semipermeable membrane.
As an optimized technical scheme, the uniform water absorption layer is made of a colored stone epoxy through body permeable material.
The slurry preparation unit comprises a fixed support, a slurry storage device, a stirrer and a stirrer speed regulator, wherein the slurry storage device is arranged on the fixed support, the stirrer can stir in the slurry storage device, and the stirrer speed regulator is connected with the stirrer.
As the optimized technical scheme, the slurry conveying unit comprises a fixed casing clamp, a grouting pipeline and a grouting pump; one end of the grouting pipeline extends into the slurry storage device, the other end of the grouting pipeline extends into the flowing pipeline, and the grouting pipeline is fixedly connected to the inner wall of the slurry storage device through the fixing sleeve clamp; the grouting pump is installed in the middle of the grouting pipeline, and the grouting pump adopts a peristaltic pump.
The utility model has the advantages that:
1. the device provides the simulation environment for the slip casting filling slurry diffusion, and the simulation size is big, and the similarity is high, can develop the slip casting filling slurry flow law simulation experiment according to the research needs, is applicable to the slip casting filling slurry diffusion simulation experiment in the overburden rock isolation layer crack under the high similarity prerequisite well, has solved the big, the high difficult problem of expense of on-the-spot normal position test engineering volume, reproduces the data that are difficult to measure really through the laboratory simulation, provides basis and reference for engineering design and construction.
2. The image acquisition system can record the thickness and the diffusion distance of the grouting filling slurry in the slurry flowing layer, and better reflect the flowing condition of the grouting filling slurry in the slurry flowing layer; meanwhile, the bleeding amount of the grouting filling slurry and the variation of the bleeding amount of the grouting filling slurry at different flowing positions in the flowing process can be calculated through the data recorded by the humidity acquisition system.
3. Through changing thick liquid mobile layer and single permeable bed, can carry out the repeated experiment of the slip casting filling thick liquid of the different ratio of multiunit to the thick liquid of the non-pressure stage under the different infiltration bottom plate condition of thick liquid mobile layer simulation that can be through different raw materials ratios flows, realizes that same device carries out the simulation experiment of multiunit times.
Drawings
Fig. 1 is a schematic axial view of a slurry flow unit according to an embodiment of the present invention.
Figure 2 is a schematic cross-sectional view of a slurry flow cell according to an embodiment of the invention.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The embodiment of the utility model discloses slip casting fills thick liquid diffusion distance simulation experiment device, flow unit, thick liquid configuration unit, thick liquid conveying unit and data acquisition unit including the thick liquid.
As shown in fig. 1 and 2, the slurry flow unit comprises a flow pipe 1, a slurry flow layer 2, a single water permeable layer 3, a uniform water absorption layer 4, a sensor jack 6, a baffle 7 and a graduated scale 8.
The flow pipe 1 is made of transparent acrylic material; the flow pipeline 1 comprises 6 groove pipelines (1 is shown in the figure), the groove pipelines are cuboids, the length of each groove pipeline is 100cm, cuboid grooves which extend along the length direction of the groove pipeline and are provided with upward openings are arranged on the groove pipelines, the groove pipelines are sequentially arranged along the length direction of the flow pipeline 1 and are communicated with one another, and the connecting ends of the adjacent groove pipelines are fixedly connected through flanges; a uniform water absorbing layer 4, a single permeable layer 3 and a slurry flowing layer 2 which extend along the length direction of the flowing pipeline 1 are sequentially paved in the flowing pipeline from bottom to top; a group of sensor jacks 6 are arranged at intervals of 30cm along the length direction at the lower part of one side of the flow pipeline 1; the baffle 7 is closed at the starting end of the flow pipeline 1, the center of the baffle 7 is provided with a grouting hole, and the position of the grouting hole corresponds to the starting end of the slurry flow layer 2; the graduated scales 8 extending along the length direction of the flow pipeline 1 are respectively adhered to two sides of the top of the flow pipeline, so that the diffusion distance of grouting filling slurry can be conveniently read.
The uniform water absorption layer 4 can absorb water uniformly, the embodiment of the utility model adopts a colored stone epoxy through body permeable material, and the aggregate of the material is made by gluing and curing natural colored stone and imported modified epoxy resin T-31; even layer 4 that absorbs water can be prefabricated, also can cast in situ, owing to need bury humidity transducer 5 underground, the embodiment of the utility model provides an adopt the site pouring to accomplish the laying of even layer 4 that absorbs water.
The single permeable layer 3 only allows water to pass through and has no water absorption, and the embodiment of the utility model adopts a copper alginate semi-permeable membrane; the layer 4 that evenly absorbs water lays the completion back and lays single permeable stratum 3 above it for separate thick liquid mobile layer 2 and evenly absorb water layer 4, single permeable stratum 3 can be dismantled.
The slurry flowing layer 2 can simulate the water seepage conditions of the isolation layer, in the embodiment, cement ash, coarse sand and stone, fine sand and stone and water are used as raw materials, the particle size of the fine sand and stone is 1.6-4 mm, the particle size of the coarse sand and stone is 10-30 mm, different pore conditions can be obtained by changing the mixture ratio of the raw materials, and therefore the isolation layers with different water seepage conditions can be simulated; the mass ratio of each component in the first experiment is cement ash: fine sand stone: coarse sand stone: water =2:3:6:1, the mass ratio of each component in the second experiment is cement ash: fine sand stone: coarse sand stone: water =2:2:4:1, it needs to be noted that the raw material proportion is not fixed, and the mass ratio of each component can be adjusted according to actual simulation requirements; for example, when an isolation layer with good simulation permeability (the permeability coefficient K is less than or equal to 10-5 cm/s), the mass ratio of cement ash is not more than 5%, and the mass ratio of fine sand to coarse sand is 1.3-1; when simulating an isolation layer with poor permeability (the permeability coefficient K is less than 10-6 cm/s), the mass ratio of cement ash is not less than 15%, and the mass ratio of fine sand stone to coarse sand stone is 1.5; after the raw materials of the slurry flowing layer 2 are stirred, the raw materials are poured above the single permeable layer 3 and are laid flat, so that a similar simulation environment is provided for the grouting filling slurry to diffuse in the cracks of the isolation layer; the slurry flowing layer 2 can be detached, and slurry flowing in a non-pressure stage under different water seepage bottom plate conditions can be simulated by replacing the slurry flowing layer 2 with different raw material ratios, so that the slurry diffusion simulation under different water seepage bottom plate conditions by the same device is realized.
The slurry configuration unit (not shown) can configure grouting filling slurry and comprises a fixed support, a slurry storage device, a stirrer and a stirrer speed regulator, wherein the slurry storage device is installed on the fixed support, the stirrer can stir in the slurry storage device, and the stirrer speed regulator is connected with the stirrer.
The slurry conveying unit (not shown) can convey the grouting filling slurry configured by the slurry configuration unit to the starting end of the slurry flowing layer 2, and comprises a fixed casing clamp, a grouting pipeline and a grouting pump; one end of the grouting pipeline extends into the slurry storage device, the other end of the grouting pipeline extends into the flowing pipeline 1 from the grouting hole, and the grouting pipeline is fixedly connected to the inner wall of the slurry storage device through the fixing sleeve clamp; the grouting pump is installed in the middle of the grouting pipeline, a peristaltic pump is adopted by the grouting pump, and grouting filling slurry is pumped into the slurry flowing layer 2 at a constant flow rate through peristalsis.
The data acquisition unit can record the diffusion distance of the grouting filling slurry in the slurry flowing layer 2 along with the change of time, and comprises a humidity sensor 5, a humidity acquisition system (not shown), a camera (not shown) and an image acquisition system (not shown); humidity sensors 5 which are inserted into the uniform water absorption layer 4 are arranged at intervals of 30cm along the length direction of the flow pipeline 1, extending columns of the humidity sensors 5 are respectively inserted into the uniform water absorption layer 4 through sensor insertion holes 6, and water contents of different positions of the uniform water absorption layer 4 can be obtained through readings of the humidity sensors 5; each humidity sensor 5 is respectively connected with the humidity acquisition system, and the humidity acquisition system can record the change of the data of each humidity sensor 5 along with the time; the camera is aligned with the flow pipeline 1 and can shoot the thickness and the diffusion distance of the grouting filling slurry in the slurry flowing layer 2; the camera is connected with the image acquisition system, and the image acquisition system can record the change of the data shot by the camera along with the time.
The grouting filling slurry diffusion distance simulation experiment method adopts the grouting filling slurry diffusion distance simulation experiment device and comprises the following steps:
step a, a slurry configuration unit configures grouting filling slurry: continuously stirring the grouting filling slurry in a slurry storage device by a stirrer at room temperature, wherein the rotating speed of the stirrer is 200-700 rad/min, and preventing ash particles from depositing;
b, pumping the grouting filling grout configured by the grout configuration unit into the initial end of the grout flowing layer 2 at a constant flow rate by the grout conveying unit, wherein the grouting flow rate is 50mL/min;
step c, the data acquisition unit records the slurry diffusion distance once at regular intervals to obtain the functional relation between the diffusion time and the slurry diffusion distance: the image acquisition system records the diffusion distance of the slurry once every 1min, the humidity acquisition system records the data of each humidity sensor 5 once every 1min, the data recorded by the image acquisition system and the humidity acquisition system are transmitted to the computer end and a data file is exported, the computer end utilizes the experimental data to draw a curve of the diffusion time and the diffusion distance of the slurry, and fits the functional relationship between the diffusion time and the diffusion distance of the slurry, the experimental result can obtain that the diffusion distance of the slurry and the diffusion time are in a power function relationship, namely, the diffusion distance increment of the slurry does not increase after the diffusion distance of the slurry reaches a limit value along with the increase of the diffusion time;
d, after the experiment is finished, detaching the slurry flowing layer 2 and the single permeable layer 3, and cleaning the grouting filling slurry diffusion distance simulation experiment device to prevent slurry from attaching to the device;
and e, after the grouting filling slurry diffusion distance simulation experiment device is aired, replacing the new single permeable layer 3, pouring another slurry flowing layer 2 with another proportion again, and repeating the next grouting experiment.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. The utility model provides a slip casting fills thick liquid diffusion distance simulation experiment device which characterized in that: the device comprises a slurry flowing unit, a slurry configuration unit, a slurry conveying unit and a data acquisition unit;
the slurry flowing unit comprises a flowing pipeline, a slurry flowing layer, a single water permeable layer, a uniform water absorbing layer and a graduated scale; the flow pipeline is transparent, and a graduated scale extending along the length direction of the flow pipeline is fixedly connected to the flow pipeline; a uniform water absorbing layer, a single permeable layer and a slurry flowing layer which extend along the length direction of the flowing pipeline are sequentially paved in the flowing pipeline from bottom to top;
the slurry configuration unit can configure grouting filling slurry;
the slurry conveying unit can convey the grouting filling slurry arranged by the slurry arranging unit to the starting end of the slurry flowing layer;
the data acquisition unit comprises a humidity sensor, a humidity acquisition system, a camera and an image acquisition system; a humidity sensor inserted into the uniform water absorption layer is arranged at a certain distance along the length direction of the flow pipeline; each humidity sensor is respectively connected with the humidity acquisition system; the camera is directed at the flow conduit; the camera is connected with the image acquisition system.
2. The grouting filling slurry diffusion distance simulation experiment device according to claim 1, wherein: the slurry flowing layer and the single water permeable layer can be detached.
3. The grouting filling slurry diffusion distance simulation experiment device according to claim 1, wherein: the flow pipeline comprises a plurality of groove pipelines, grooves which extend along the length direction of the flow pipeline and are provided with upward openings are arranged on the groove pipelines, the groove pipelines are sequentially arranged along the length direction of the flow pipeline and are communicated with each other, and the joint ends of the adjacent groove pipelines are fixedly connected through flanges; the slurry flowing unit further comprises a baffle plate, the baffle plate is sealed at the starting end of the flowing pipeline, a grouting hole is formed in the center of the baffle plate, and the position of the grouting hole corresponds to the starting end of the slurry flowing layer.
4. The grouting filling slurry diffusion distance simulation experiment device according to claim 1, wherein: the slurry flowing layer adopts cement ash, coarse sand and stone, fine sand and stone and water as raw materials, the particle size of the fine sand and stone is 1.6-4 mm, and the particle size of the coarse sand and stone is 10-30 mm.
5. The grouting filling slurry diffusion distance simulation experiment device according to claim 1, wherein: the single permeable layer employs a copper alginate semipermeable membrane.
6. The grouting filling slurry diffusion distance simulation experiment device according to claim 1, wherein: the uniform water absorption layer is made of a colored stone epoxy through permeable material.
7. The grouting filling slurry diffusion distance simulation experiment device according to claim 1, wherein: the slurry preparation unit comprises a fixed support, a slurry storage device, a stirrer and a stirrer speed regulator, wherein the slurry storage device is arranged on the fixed support, the stirrer can be used for stirring in the slurry storage device, and the stirrer speed regulator is connected with the stirrer.
8. The grouting filling slurry diffusion distance simulation experiment device according to claim 7, wherein: the slurry conveying unit comprises a fixed sleeve clamp, a grouting pipeline and a grouting pump; one end of the grouting pipeline extends into the slurry storage device, the other end of the grouting pipeline extends into the flowing pipeline, and the grouting pipeline is fixedly connected to the inner wall of the slurry storage device through the fixing sleeve clamp; the grouting pump is installed in the middle of the grouting pipeline, and the grouting pump adopts a peristaltic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221174266.4U CN217561260U (en) | 2022-05-16 | 2022-05-16 | Grouting filling slurry diffusion distance simulation experiment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221174266.4U CN217561260U (en) | 2022-05-16 | 2022-05-16 | Grouting filling slurry diffusion distance simulation experiment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217561260U true CN217561260U (en) | 2022-10-11 |
Family
ID=83475143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221174266.4U Active CN217561260U (en) | 2022-05-16 | 2022-05-16 | Grouting filling slurry diffusion distance simulation experiment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217561260U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116840105A (en) * | 2023-08-29 | 2023-10-03 | 中国煤炭地质总局勘查研究总院 | Grouting filling slurry diffusion distance simulation experiment device |
-
2022
- 2022-05-16 CN CN202221174266.4U patent/CN217561260U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116840105A (en) * | 2023-08-29 | 2023-10-03 | 中国煤炭地质总局勘查研究总院 | Grouting filling slurry diffusion distance simulation experiment device |
| CN116840105B (en) * | 2023-08-29 | 2023-11-17 | 中国煤炭地质总局勘查研究总院 | Grouting filling slurry diffusion distance simulation experiment device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Bezuijen et al. | Analytical model for fracture grouting in sand | |
| CN109342275A (en) | Simulate the visualization crack grouting experimental rig and method of more master variables | |
| CN208206964U (en) | Simulate high-pressure slip-casting device under buried stratum river channels | |
| CN106442258B (en) | A kind of detachable lining cutting seepage flow test device and its test method | |
| CN106769758B (en) | A kind of prismatical joint Seepage of Rock Masses experimental rig and production method | |
| CN104897527A (en) | Visual quasi-rectangular shield synchronous grouting slurry diffusion mode research platform and application | |
| CN106885759B (en) | A kind of visualization sand bed with saturated dynamic water osmotic grouting experimental rig and method | |
| CN103913289A (en) | Simulating system used for shield tunnel synchronous grouting test and test method thereof | |
| CN217561260U (en) | Grouting filling slurry diffusion distance simulation experiment device | |
| CN110850060A (en) | Visual porous grouting test device and test method thereof | |
| CN101096852B (en) | Method for anti-floating of underground building | |
| CN106338419B (en) | A kind of porous multi-angle depth adjustable type fracture grouting sample preparation device and method | |
| CN108196034A (en) | Simulate high-pressure slip-casting device and test method under buried stratum river channels | |
| CN212568764U (en) | Induced grouting experimental model for saturated fine sand layer | |
| CN109975177A (en) | A kind of simulation test device and method of horizontal grouting mouth slip casting spreading morphology | |
| Contreras et al. | The use of the fully-grouted method for piezometer installation | |
| CN112710805A (en) | Experimental system for visual seepage flow of test mine water and purification characteristic | |
| CN108414728A (en) | Weak soil displacement field and the visual experimental rig of seepage field and test method under a kind of vacuum method | |
| CN105064426B (en) | Miniature slip casting rubble steel-pipe pile laboratory testing rig and its test method | |
| CN114486641A (en) | Magnetic slurry crack grouting and filling experimental device and method | |
| CN106480871B (en) | A kind of automation settlement monitoring device and method being applicable in Yu Haiyang's land reclamation construction usage | |
| Jiang et al. | Optimization of grouting material for shield tunnel antifloating in full-face rock stratum in Nanchang metro construction in China | |
| CN103149139B (en) | Method for testing permeability characteristic of full-tailings cemented filling slurry | |
| CN110456028A (en) | It is a kind of can be with the grouting test device and method of independent control three-dimensional stress state | |
| CN109580456A (en) | A kind of experimental rig and test method of the research of osmotic grouting Percolation Threshold Effect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |