Test method and test system for serous fluid permeation consolidation rate, and computer equipment

Abstract

The invention discloses a slurry permeation consolidation rate test method, test system and computer equipment, and the test method comprises the following steps: S1, pouring standard sand into a cylindrical test device, leveling the surface of the standard sand in the cylindrical test device to be horizontal, and measuring the height H of the standard sand in the cylindrical test device; s2, taking slurry with the volume of # imgabs0 #, and slowly pouring the slurry into the cylindrical testing device; s3, the cylindrical testing device is placed in the steel sleeve, an air bag is used for blocking an opening of the cylindrical testing device, the interior of the cylindrical testing device is pressurized through a pressurizing device, the mixture of the standard sand and the slurry is pressurized to p, the pressure maintaining time is t, and the slurry can fully permeate into the standard sand; and S4, removing the pressurizing device, measuring the overall height h of a mixture of the slurry and the standard sand after complete permeation, and calculating a pressure permeation consolidation rate index # imgabs 1 #. The pressure permeation consolidation rate index is adopted as an evaluation index, and accurate quantitative evaluation of the permeation and solidification performance of the slurry in the stratum can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of measurement and testing, and particularly relates to a test method, a test system and a computer device for the slurry penetration consolidation rate. Background Art

[0002] The grouting technology is widely used in geotechnical reinforcement, crack filling and anti-seepage projects. The core lies in whether the slurry can effectively penetrate into the target pores and consolidate to form a stable structure. The slurry permeability and consolidation performance are indispensable research contents in geotechnical engineering. Especially in the fields of civil engineering, mine reinforcement, underground space development, etc., the slurry permeability directly determines its filling effect, while the consolidation performance is the key factor to ensure the final strength and stability. Therefore, the effective evaluation of the slurry penetration consolidation performance is an urgent problem to be solved in current engineering construction.

[0003] Currently, the evaluation methods for the slurry penetration consolidation performance mainly include fluidity testing, simulated formation experiments, microscopic model observations, etc. Although these methods provide references for the evaluation of slurry performance to a certain extent, there are many technical defects, resulting in the inability to accurately and comprehensively characterize the performance of the slurry in actual engineering applications.

[0004] Deficiencies of fluidity testing: Fluidity testing usually indirectly characterizes the slurry penetration ability through parameters such as Marsh funnel viscosity and fluidity. This testing method mainly focuses on the fluidity of the slurry. However, fluidity does not directly reflect the actual penetration behavior of the slurry in porous media, especially under different pressure conditions. Conventional fluidity testing often ignores the synergistic effect of penetration and consolidation, leading to the following problems: (1) Underestimating the potential of high-viscosity slurries: Some high-viscosity slurries may enhance permeability through shear thinning or by compressing pore gases under pressure, but experiments under normal pressure may misjudge them as "unusable".

[0005] (2) Overestimating the performance of low-viscosity slurries: Low-viscosity slurries are easily permeable under normal pressure, but under pressure conditions, they may damage the already consolidated structure due to turbulent scouring, and existing testing methods fail to effectively predict such risks.

[0006] This fragmented evaluation system leads to problems such as voids and leaks in actual engineering for slurries that perform well in the laboratory due to the failure of the penetration-consolidation synergy.

[0007] Deficiencies of simulated formation experiments: The simulated stratum experiment uses natural sandy soil or artificially proportioned soil to simulate the actual stratum, and tests the diffusion radius and consolidation strength of the grout. Although this method can reflect the penetration performance of the grout to a certain extent, the grading of natural sandy soil fluctuates greatly, the repeatability of the test results is poor, and it is difficult to establish a unified evaluation standard between different experiments. The experimental results under different stratum conditions vary greatly, affecting the accuracy and comparability of the grout performance evaluation. Secondly, the simulated stratum experiment is difficult to truly reproduce the pressurized environment in the project and is usually only carried out under normal pressure, which has a large gap from the high-pressure conditions in the actual grouting process.

[0008] In addition, some people accurately weigh the mass of natural sandy soil or artificially proportioned soil before and after the experiment , after injecting the grout and consolidating, take out the consolidated body, and use methods such as screening and dissolving the unconsolidated part to remove the part that has not been consolidated by the grout, and weigh the mass of the standard sand after consolidation , and calculate the consolidation rate based on this: . However, obviously, how to accurately separate the unconsolidated part is a difficult point. Especially for the consolidated body of chemical grout, the strength is low, and the separation methods of different people vary greatly. Even for the same grout, the operation results of different people may be very different, and it is simply not operable in actual work, and its results are not comparable.

[0009] Insufficiency of microscopic model observation: The microscopic model observation method uses a transparent pore model combined with image analysis technology to track the penetration process of the grout. Although this method can theoretically accurately observe the penetration behavior of the grout, in the actual operation process, the equipment is complex and the cost is high, theoretical calculations cannot be carried out, and the consolidation effect cannot be effectively quantified. Therefore, although it can provide certain experimental data, it is still difficult to comprehensively evaluate the penetration and consolidation performance of the grout. In addition, the microscopic observation technology cannot comprehensively evaluate the consolidation effect of the grout, especially the performance of the grout in a high-pressure environment.

[0010] To sum up, the existing evaluation methods for the penetration and consolidation performance of grout have significant limitations and cannot provide standardized performance indicators, resulting in large deviations in the applicability evaluation of different grouts in engineering applications. Summary of the Invention

[0011] The technical problem to be solved by the present invention is that the existing evaluation methods for the penetration and consolidation performance of grout have significant limitations and cannot provide standardized performance indicators, resulting in large deviations in the applicability evaluation of different grouts in engineering applications. For this reason, the present invention provides a test method, a test system, and a computer device for the penetration consolidation rate of grout.

[0012] The technical solution adopted by the present invention to solve its technical problems is: First aspect, a test method for the slurry penetration consolidation rate, comprising the following steps: S1. Pour standard sand into a cylindrical test device with a radius of , the porosity of the poured standard sand is , and the weight is M. After leveling the surface of the standard sand in the cylindrical test device, measure the height H of the standard sand in the cylindrical test device; S2. Take a slurry with a volume of and slowly pour it into the cylindrical test device, and the slurry will gradually penetrate into the gaps of the standard sand; S3. Place the cylindrical test device into a steel sleeve, make the inner wall of the cylindrical test device fit with the inner wall of the steel sleeve, block the opening of the cylindrical test device with an airbag and pressurize the inside of the cylindrical test device through a pressurizing device to pressurize the mixture of the standard sand and the slurry to p, and keep the pressure for a time t, so that the slurry can fully penetrate into the standard sand; S4. Remove the pressurizing device, measure the overall height h of the mixture of the slurry and the standard sand after complete penetration, and calculate the pressure penetration consolidation rate index .

[0013] Further, the calculation formula of the pressure penetration consolidation rate index is: , represents the apparent density of the whole formed by the standard sand and the slurry after penetration consolidation; represents the maximum value of the apparent density of the whole formed by the standard sand and the slurry after penetration consolidation; represents the weight of the slurry with a volume of ; represents the shrinkage rate of the slurry at the end of the test; is related to the applied pressure p.

[0014] Further, if the slurry setting and curing time ≥ 30 minutes, the shrinkage rate = 0; if the slurry setting and curing time < 30 minutes, determine the value of the shrinkage rate according to the technical manual of the slurry.

[0015] Further, the calculation formula of the porosity of the standard sand is: , represents the bulk density of the standard sand; Represents the particle density of standard sand.

[0016] Furthermore, the standard sand adopts the sand quality conforming to the ISO679:2009 standard.

[0017] In a second aspect, a test system for the slurry penetration consolidation rate adopts the test method for the slurry penetration consolidation rate. The test system includes: A cylindrical test device for carrying the standard sand and the slurry, and the slurry will gradually penetrate into the pores of the standard sand; A pressurizing device. The cylindrical test device is placed into a steel sleeve, and then the opening of the cylindrical test device is blocked by an airbag. The pressurizing device is used to apply pressure to the cylindrical test device so that the slurry can fully penetrate into the standard sand; A calculation module for calculating the pressure penetration consolidation rate index .

[0018] In a third aspect, a computer device includes: A processor; A memory for storing executable instructions; Wherein, the processor is used to read the executable instructions from the memory and execute the executable instructions to implement the test method for the slurry penetration consolidation rate.

[0019] The beneficial effect of the present invention is that the test method, test system and computer device for the slurry penetration consolidation rate of the present invention innovatively propose the "pressure penetration consolidation rate index" as an evaluation index, which can unify the evaluation standard; and a pressurizing device is added during the test to simulate different pressure environments, which can break through the limitations of the atmospheric pressure experiment, can simulate different pressure environments, and realize the accurate quantitative evaluation of the slurry penetration and curing performance in the formation.

[0020] Adopting this evaluation index can overcome the limitations of the traditional method in the evaluation of the slurry penetration consolidation performance, and can more comprehensively and truly reflect the penetration and consolidation behavior of the slurry in the actual project. Under specific pressure or different pressure conditions, the pressure penetration consolidation rate index can quantify the penetration effect and consolidation effect of the slurry in the standard sand medium. Especially in the test of high-viscosity or low-viscosity slurry, the pressure penetration consolidation rate index can more truly reflect the performance of the slurry under the actual construction conditions. It can not only test the penetration performance of the slurry under atmospheric pressure, but also test the penetration performance of the slurry under pressure, providing an effective basis for the selection and application of the slurry in the actual construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the drawings and embodiments.

[0022] Figure 1 is the flow chart of the test method for the slurry penetration consolidation rate of the present invention.

[0023] Figure 2 is the schematic diagram of the test process for the slurry penetration consolidation rate of the present invention. Specific Embodiments

[0024] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation to the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] Embodiment 1 As Figures 1 to 2 shown, the test method for the slurry penetration consolidation rate provided in this embodiment includes the following steps: S1. Pour standard sand into a cylindrical test device. The radius of the cylindrical test device is , the porosity of the poured standard sand is , and the weight is M. After leveling the surface of the standard sand in the cylindrical test device, measure the height H of the standard sand in the cylindrical test device.

[0028] S2. Take a volume of The slurry is slowly poured into the cylindrical test device, and the slurry will gradually penetrate into the gaps of the standard sand.

[0029] S3. Place the cylindrical test device into the steel sleeve. The cylindrical test device fits against the inner wall of the steel sleeve. Use an airbag to block the opening of the cylindrical test device and pressurize the inside of the cylindrical test device through a pressurizing device. Pressurize the mixture of the standard sand and the slurry to p, and maintain the pressure for a time t, so that the slurry can fully penetrate into the standard sand.

[0030] S4. Remove the pressurizing device, measure the overall height h of the mixture of the slurry and the standard sand after complete penetration, and calculate the pressure penetration consolidation rate index .

[0031] It should be noted that this embodiment innovatively proposes the "pressure penetration consolidation rate index" as an evaluation index, which can unify the evaluation criteria; and a pressurizing device is added during the test to simulate different pressure environments, which can break through the limitations of atmospheric pressure experiments and achieve accurate quantitative evaluation of the penetration and curing performance of the slurry in the formation.

[0032] Specifically, the pressure penetration consolidation rate index of this embodiment The calculation formula is: , Among them, represents the apparent density of the whole formed by the standard sand and the slurry after penetration consolidation; represents the maximum value of the apparent density of the whole formed by the standard sand and the slurry after penetration consolidation; represents the weight of the slurry with a volume of ; represents the shrinkage rate of the slurry at the end of the test; The magnitude of is related to the applied pressure p. That is to say, the value of the pressure penetration consolidation rate index of this embodiment is related to H, h, , and the magnitude of h is related to the pressure applied by the pressurizing device and the permeability of the slurry itself. The pressure penetration consolidation rate index The value range is 0 to 1. Using this index as an evaluation index can overcome the limitations of the prior art. For example, this embodiment can test the penetration and consolidation performance of slurries with different viscosities under specific pressures and different pressures.

[0033] In addition, the pressure penetration consolidation rate index of this embodiment The shrinkage rate of the slurry is also considered. When conducting tests, it takes some time for the slurry to solidify after being poured into the standard sand. Sometimes, at the end of the test, the slurry may not be completely solidified. In this case, if the osmotic consolidation rate is directly calculated, the result will be inaccurate. For example, the acrylate has a short setting time but may shrink or expand, which affects the value of h. Therefore, in this embodiment, the shrinkage rate is added to the pressure osmotic consolidation rate index for correction. Taking the end of the test as the time node, record the shrinkage rate of the slurry. If the slurry is in a shrinking state, take it as positive. If the slurry is in an expanding state, take it as negative. For the value, if the solidification time of the slurry ≥ 30 minutes, the shrinkage rate = 0; if the solidification time of the slurry < 30 minutes, determine the value of the shrinkage rate according to the technical manual of the slurry.

[0034] In this embodiment, the standard sand used is sandy that complies with the ISO679:2009 standard. The production and porosity of this standard sand are relatively stable, which can improve the problem of test medium discretization. The porosity of the standard sand is calculated by the formula: , represents the bulk density of the standard sand; represents the particle density of the standard sand.

[0035] This embodiment innovatively proposes the pressure osmotic consolidation rate index . Using this evaluation index can overcome the limitations of traditional methods in evaluating the osmotic consolidation performance of the slurry, and can more comprehensively and truly reflect the osmotic and consolidation behaviors of the slurry in actual engineering. Under specific pressure or different pressure conditions, the pressure osmotic consolidation rate index can quantify the osmotic effect and consolidation effect of the slurry in the standard sand medium. Especially in the tests of high-viscosity or low-viscosity slurries, the pressure osmotic consolidation rate index can more truly reflect the performance of the slurry under actual construction conditions. It can not only test the osmotic performance of the slurry under normal pressure, but also test the osmotic performance of the slurry under pressure, providing an effective basis for the selection and application of the slurry in actual construction.

[0036] By using the pressure osmotic consolidation rate index as the evaluation index, the osmotic consolidation performance of the slurry under different pressure conditions can be accurately evaluated, which is very important for actual construction, especially in scenarios such as underground engineering and mine reinforcement. The osmotic consolidation performance of the slurry directly affects the stability and long-term reliability of the project. Through Based on this value, the staff can select a more suitable grouting material to avoid structural instability or seepage problems caused by improper selection of the slurry. For different slurries, the pressure penetration consolidation rate index can also provide a standardized evaluation index, allowing for quantitative comparison of the penetration consolidation performance of slurries under different concentration, viscosity, and pressure conditions. This can avoid the simple correlation between viscosity and permeability in fluidics tests and ensure that the evaluation results are more in line with the actual engineering requirements. The pressure penetration consolidation rate index proposed in this embodiment provides a standardized basis for evaluating the penetration consolidation performance of slurries. The staff can optimize the penetration consolidation effect of the slurry by adjusting the slurry concentration, viscosity, and applied pressure to meet different engineering needs.

[0037] Embodiment 2 The test system for the slurry penetration consolidation rate in this embodiment adopts the test method for the slurry penetration consolidation rate. The test system includes: a cylindrical test device for carrying standard sand and slurry, and the slurry gradually penetrates into the pores of the standard sand; a pressurizing device. The cylindrical test device is placed in a steel sleeve, and then the opening of the cylindrical test device is blocked by an airbag, and the pressurizing device is used to apply pressure to the cylindrical test device so that the slurry can fully penetrate into the standard sand; a calculation module for calculating the pressure penetration consolidation rate index .

[0038] Embodiment 3 The computer device in this embodiment includes: a processor; a memory for storing executable instructions; wherein, the processor is configured to read the executable instructions from the memory and execute the executable instructions to implement the test method for the slurry penetration consolidation rate.

[0039] In summary, the test method, test system, and computer device for the slurry penetration consolidation rate of the present invention innovatively propose the "pressure penetration consolidation rate index" as an evaluation index, which can unify the evaluation standard; and a pressurizing device is added during the test process to simulate different pressure environments, which can break through the limitations of atmospheric pressure experiments, simulate different pressure environments, and achieve accurate quantitative evaluation of the penetration and curing performance of the slurry in the formation.

[0040] Inspired by the ideal embodiments of the present invention described above, through the above description, relevant staff can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A test method for the slurry penetration and consolidation rate, characterized in that Including the following steps: S1. Pour standard sand into a cylindrical testing device with a radius of . The porosity of the poured standard sand is , and the weight is M. After leveling the surface of the standard sand in the cylindrical testing device, measure the height H of the standard sand in the cylindrical testing device; S2. Slowly pour the slurry with a volume of into the cylindrical test device, and the slurry will gradually penetrate into the gaps of the standard sand; S3. Place the cylindrical test device into the steel sleeve. The cylindrical test device is in contact with the inner wall of the steel sleeve. Use an airbag to block the opening of the cylindrical test device and pressurize the inside of the cylindrical test device through a pressurizing device. Pressurize the mixture of standard sand and slurry to p, and keep the pressure for a time t, so that the slurry can fully penetrate into the standard sand; S4. Remove the pressurizing device, measure the overall height h of the mixture of the slurry and standard sand after complete penetration, and calculate the pressure penetration consolidation rate index .

2. The test method for the slurry penetration consolidation rate according to claim 1, wherein The pressure infiltration consolidation rate index is calculated by the following formula: ， Denote the apparent density of the whole formed by standard sand and slurry after osmotic consolidation; Indicates the maximum apparent density of the whole formed by standard sand and slurry after osmotic consolidation; Indicates the weight of the slurry with a volume of ; Indicates the shrinkage rate of the slurry at the end of the test; The size is related to the applied pressure p.

3. The test method for the slurry penetration consolidation rate according to claim 2, wherein If the slurry setting and solidification time ≥ 30 minutes, then the shrinkage rate = 0; If the slurry setting and solidifying time < 30 minutes, determine the shrinkage rate according to the technical manual of the slurry value.

4. The test method for the slurry penetration consolidation rate according to claim 1 or 2, wherein Porosity of standard sand The calculation formula is as follows: ， Indicates the bulk density of standard sand; Indicates the particle density of standard sand.

5. The test method for the slurry penetration consolidation rate according to claim 1, wherein The standard sand is of a sand quality conforming to the ISO679:2009 standard.

6. A test system for the slurry penetration and consolidation rate, characterized in that, Using the test method for the slurry penetration consolidation rate according to any one of claims 1-5, the test system includes: A cylindrical test device, which is used to hold the standard sand and the slurry, and the slurry will gradually penetrate into the pores of the standard sand; A pressurizing device, which places the cylindrical test device into the steel sleeve, then uses an airbag to block the opening of the cylindrical test device, and uses the pressurizing device to apply pressure to the inside of the cylindrical test device, so that the slurry can fully penetrate into the standard sand; Computing module, for computing the pressure osmotic consolidation rate index .

7. A computer device, characterized in that, Including: A processor; A memory for storing executable instructions; Wherein, the processor is used to read the executable instructions from the memory and execute the executable instructions to implement the test method for the slurry penetration consolidation rate according to any one of claims 1 to 5.

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