CN116956401A - Structural gap grouting water stop grouting amount calculating method - Google Patents
Structural gap grouting water stop grouting amount calculating method Download PDFInfo
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- CN116956401A CN116956401A CN202310822289.4A CN202310822289A CN116956401A CN 116956401 A CN116956401 A CN 116956401A CN 202310822289 A CN202310822289 A CN 202310822289A CN 116956401 A CN116956401 A CN 116956401A
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- grouting
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000002002 slurry Substances 0.000 claims abstract description 71
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 19
- 238000004364 calculation method Methods 0.000 claims abstract description 18
- 238000002474 experimental method Methods 0.000 claims abstract description 4
- 201000010099 disease Diseases 0.000 claims description 13
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims description 13
- 238000009792 diffusion process Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 9
- 239000012530 fluid Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000007569 slipcasting Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/08—Fluids
Abstract
The utility model provides a structural gap grouting water stop grouting amount calculating method, which relates to the technical field of grouting water stop, and comprises the following steps of a, calculating theoretical volume Q=BHL of a gap, wherein B is the gap width, L is the gap length, and the wall thickness is H; b. obtaining a loss coefficient A of the slurry on the upstream surface through a test; c. obtaining a back surface slurry loss coefficient C through a test; d. obtaining slurry loss coefficients D of different water leakage grades through experiments; e. according to the calculation method of the grouting quantity Q obtained in the step abcd, Q= (1+A+C) and D are HBL. The utility model designs a calculation method for the three-slit grouting water stop grouting amount of a tunnel, which not only can fully consider the geometric dimension of a slit and the severity of the leakage water of the slit, but also considers the loss factors of slurry on an upstream surface and a back surface, thereby realizing reasonable calculation of the three-slit grouting amount.
Description
Technical Field
The utility model relates to the technical field of grouting water stop, in particular to a structural gap grouting water stop grouting amount calculating method.
Background
The utility model provides a method is given to the calculation of "three seam" slip casting stagnant water in-process to the slip casting volume promptly to tunnel structure leakage water disease is the main disease that influences tunnel normal use, mainly relates to the leakage water problem of crack, construction joint, movement joint.
The existing grouting water stop is mainly treated by adopting a grouting water stop mode, such as quick grouting water stop by adopting polyurethane, acrylate and the like. However, there is no specific method for calculating the grouting amount, and the grouting amount calculation method for soil improvement is given in the technical specification of grouting in urban rail transit tunnel engineering (DB 111444-2017), but is not suitable for calculating the grouting amount of three joints.
The existing method only depends on the geometric dimension of the gap to calculate the grouting amount, and the existing grouting amount calculating method is q=lbh, assuming that the gap length is L, the width is B, the wall thickness is H, and the grouting amount is Q. Slurry loss caused by different disease severity is not considered; the diffusion of the slurry is not considered; the loss of slurry at the upstream face and the loss at the downstream face are not considered.
Disclosure of Invention
The utility model aims to provide a structural gap grouting water stop grouting amount calculating method for solving the problem that an existing calculating mode is inaccurate.
The utility model is realized in the following way: a structural gap grouting water-stopping grouting amount calculating method, wherein,
a. calculating the theoretical volume Q=BHL of the gap, wherein B is the gap width, L is the gap length and the wall thickness is H;
b. obtaining a loss coefficient A of the slurry on the upstream surface through a test;
c. obtaining a back surface slurry loss coefficient C through a test;
d. obtaining slurry loss coefficients D of different water leakage grades through experiments;
e. according to the calculation method of the grouting quantity Q obtained in the step abcd, Q= (1+A+C) and D are HBL.
Preferably, in the step b, the consumption of the slurry of various loss factors on the upstream surface under the condition of different water leakage grades is obtained by simulating the real grouting process, and the consumption is compared with the theoretical volume of a gap, and the ratio is the loss coefficient A of the slurry on the upstream surface.
Preferably, in the step b, an ultrasonic section scanner is adopted to test the distribution range of the grouting liquid on the upstream surface, and the loss amount of the grouting liquid on the upstream surface is obtained through calculation.
Preferably, factors affecting the upstream slurry loss factor A are: slurry diffusion loss, secondary gap filling loss, slurry loss.
Preferably, in step C, the consumption of the slurry of various loss factors on the back surface under the condition of different water leakage grades is obtained by simulating the real grouting process, and the consumption is compared with the theoretical volume of the gap, and the ratio is the slurry loss coefficient C on the back surface.
Preferably, in step c, the overflow loss grouting solidification body of the back surface is collected, and the consumption of the slurry on the back surface is measured by weighing through an electronic scale.
Preferably, factors affecting the back-side slurry loss factor C are: slurry diffusion loss, slurry return loss, equipment residue, slurry loss.
Preferably, in the step D, the slurry loss coefficients D of different water leakage grades are obtained by simulating a real grouting process.
Preferably, in step abcd, each coefficient at the station position and the section position in the tunnel needs to be counted.
Preferably, in step abcd, each coefficient under different disease degrees needs to be counted, and the disease degrees include: drip and below, line flow and stream flow, gush.
By adopting the technical scheme, the utility model designs a calculation method for the three-slit grouting water stop grouting amount of the tunnel, and the method not only can fully consider the geometric dimension of the slit and the severity of the slit leakage water, but also considers the loss factors of the slurry on the upstream surface and the downstream surface, thereby realizing reasonable calculation of the three-slit grouting amount.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of crack defect slurry diffusion in accordance with the present utility model;
FIG. 2 is a schematic illustration of the slurry diffusion of the joint defects of the present utility model;
FIG. 3 is a schematic illustration of the diffusion of the deformation joint defect slurry of the present utility model.
In the figure: 1-soil body, 2-primary support, 3-gap between primary lining and secondary lining, 4-structure upstream surface, 5-upstream surface slurry loss, 6-slurry theoretical volume, 7-water stop broken position, 8-steel edge buried water stop, 9-structure upstream surface, 10-water receiving box, 11-upstream surface slurry loss, 12-deformation joint, 13-construction joint and 14-crack.
Detailed Description
Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. 1-3, in order to make the calculation of the grouting amount for the water leakage treatment of the tunnel structure more accurate and accelerate the construction progress, the utility model designs a structural gap grouting water stop grouting amount calculating method. The leakage position of the tunnel structure generally has one or more defects in cracks, construction joints and deformation joints, the leakage water formed by the three defects has various expression forms such as wet stains, drip leakage, linear flow, surge flow and the like, each leakage expression form has specific loss factors in the grouting treatment process, and the grouting quantity can be accurately calculated only by comprehensively considering the loss factors.
The calculation steps of the utility model are as follows:
a. calculating the theoretical volume Q=BHL of the gap, wherein B is the gap width, L is the gap length and the wall thickness is H; the theoretical volume of the gap is calculated by using the width, the length and the wall thickness of the gap, and the influence of various factors is considered based on the theoretical volume.
b. Obtaining a loss coefficient A of the slurry on the upstream surface through a test;
c. obtaining a back surface slurry loss coefficient C through a test;
d. obtaining slurry loss coefficients D of different water leakage grades through experiments;
e. according to the calculation method of the grouting quantity Q obtained in the step abcd, Q= (1+A+C) and D are HBL.
Furthermore, the step bcd is to simulate the real grouting process and obtain each coefficient according to the test data.
Furthermore, the defects with different leakage grades are selected for field test, and the test is required to be carried out on the defects with different grades at the station position and the interval position in the tunnel. In the step b, the consumption of the slurry of various loss factors on the upstream surface under the conditions of different water leakage grades is obtained by simulating the real grouting process, and the consumption is compared with the theoretical volume of a gap, and the ratio is the loss coefficient A of the slurry on the upstream surface. Wherein, an ultrasonic section scanner is used for detecting the distribution range of the grouting liquid on the upstream surface and calculating the loss of the grouting liquid on the upstream surface (see tables 4 and 5). Factors affecting the upstream slurry loss factor a are: slurry diffusion loss, secondary gap filling loss, slurry loss, etc.
Wherein, through the test, the loss coefficient (after rounding) of the upstream surface slurry is:
| degree of disease | Station | Interval of |
| Drip and the following | 1 | 1 |
| Wire flow | 1.5 | 1.5 |
| Flow of fluid and gush of fluid | 2 | 2 |
TABLE 1 loss coefficient of upstream slurry
Furthermore, the defects with different leakage grades are selected for field test, and the test is required to be carried out on the defects with different grades at the station position and the interval position in the tunnel. In the step C, the consumption of various loss factor slurries on the back surface under the conditions of different water leakage grades is obtained by simulating the real grouting process (see tables 4 and 5), and the consumption is compared with the theoretical volume of the gap, and the ratio is the loss coefficient C of the slurry on the back surface. And collecting overflow loss grouting solidification bodies on the back surface, and weighing and measuring the consumption of the slurry on the back surface by using an electronic scale. Factors affecting the back surface slurry loss factor C are: slurry diffusion loss, slurry return loss, equipment residue, slurry loss, and the like.
Wherein, through the test, the back surface slurry loss coefficient (after rounding) is:
| degree of disease | Station | Interval of |
| Drip and the following | 2 | 2 |
| Wire flow | 3 | 3 |
| Flow of fluid and gush of fluid | 4 | 4 |
TABLE 2 back surface slurry loss factor
In the step D, the ratio of the slurry loss mass to the gap theoretical volume under the conditions of different water leakage grades is obtained by simulating the real grouting process, and the ratio is the slurry loss coefficient D of the water leakage grade.
Wherein, through the test, the slurry loss coefficient (after rounding) is:
| degree of disease | Station | Interval of |
| Drip and the following | 1 | 1 |
| Wire flow | 2 | 2 |
| Flow of fluid and gush of fluid | 4 | 4 |
TABLE 3 slurry loss factor
Further, in step abcd, it is necessary to count each coefficient at the station position and the section position in the tunnel.
Further, in the step abcd, each coefficient under different disease degrees needs to be counted, and the disease degrees include: drip and below, line flow and stream flow, gush. Table 4 and table 5 show experimental data of station position and section position in measurement of loss coefficient of grouting amount at a certain site. Further, the coefficients were rounded (tables 1-3 above).
As shown in table 6 and table 7, for the field test of the diseases with different leakage grades in a certain field, the actual grouting amount data is compared with the calculation result of the formula. By contrast, the data error of the calculated grouting amount and the actual grouting amount is within 4%, which is far superior to the data error of the traditional calculation mode, the utility model not only can fully consider the geometric dimension of the gap and the severity of the leakage water of the gap, but also considers the loss factors of the slurry on the upstream surface and the downstream surface, and realizes the reasonable calculation of the three-gap grouting amount.
The utility model designs a calculation method for the three-slit grouting water stop grouting amount of a tunnel, which not only can fully consider the geometric dimension of a slit and the severity of the leakage water of the slit, but also considers the loss factors of slurry on an upstream surface and a back surface, thereby realizing reasonable calculation of the three-slit grouting amount.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A method for calculating the water-stop grouting amount of structural gap grouting is characterized in that,
a. calculating the theoretical volume Q=BHL of the gap, wherein B is the gap width, L is the gap length and the wall thickness is H;
b. obtaining a loss coefficient A of the slurry on the upstream surface through a test;
c. obtaining a back surface slurry loss coefficient C through a test;
d. obtaining slurry loss coefficients D of different water leakage grades through experiments;
e. according to the calculation method of the grouting quantity Q obtained in the step abcd, Q= (1+A+C) and D are HBL.
2. The method for calculating the water stop grouting amount of the structural gap grouting according to claim 1, wherein in the step b, the loss amount of the slurry caused by various loss factors on the upstream surface under the condition of different water leakage grades is obtained by simulating a real grouting process, and the loss amount is compared with the theoretical volume of the gap, and the ratio is the loss coefficient A of the slurry on the upstream surface.
3. The method for calculating the structural gap grouting water stop grouting amount according to claim 2, wherein in the step b, an ultrasonic section scanner is adopted to test the distribution range of the grouting liquid on the upstream surface, and the loss amount of the grouting liquid on the upstream surface is calculated.
4. The method for calculating the structural gap grouting water stop grouting amount according to claim 2, wherein the factors influencing the loss coefficient A of the slurry on the upstream surface are as follows: slurry diffusion loss, secondary gap filling loss, slurry loss.
5. The method for calculating the water stop grouting amount of the structural gap grouting according to claim 1, wherein in the step C, the loss amount of the slurry caused by various loss factors on the back surface under the condition of different water leakage grades is obtained by simulating a real grouting process, and the loss amount is compared with the theoretical volume of the gap, and the ratio is the loss coefficient C of the slurry on the back surface.
6. The method for calculating the structural gap grouting water stop grouting amount according to claim 5, wherein in the step c, the overflow loss grouting solidification body of the back surface is collected, and the loss amount of the slurry of the back surface is measured by weighing an electronic scale.
7. The method for calculating the structural gap grouting water stop grouting amount according to claim 5, wherein the factors influencing the back surface slurry loss coefficient C are as follows: slurry diffusion loss, slurry return loss, equipment residue, slurry loss.
8. The method for calculating the water stop grouting amount for the structural gap grouting according to claim 1, wherein in the step D, the slurry loss coefficients D of different water leakage grades are obtained by simulating a real grouting process.
9. The method for calculating the structural gap grouting water stop grouting amount according to claim 1, wherein in the step abcd, each coefficient of the station position and the section position in the tunnel needs to be counted.
10. The method for calculating the water stop grouting amount for the structural gap grouting according to claim 1, wherein in the step abcd, each coefficient under different disease degrees is required to be counted, and the disease degree comprises: drip and below, line flow and stream flow, gush.
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Citations (3)
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|---|---|---|---|---|
| US20160341587A1 (en) * | 2014-01-29 | 2016-11-24 | Schlumberger Technology Corporation | Sensing annular flow in a wellbore |
| CN114357833A (en) * | 2021-12-30 | 2022-04-15 | 中天建设集团有限公司 | Shield tunnel synchronous grouting slurry loss calculation method based on finite element analysis |
| CN116291587A (en) * | 2023-04-06 | 2023-06-23 | 中铁二十局集团南方工程有限公司 | Construction method for reinforcing grouting of guide pipe |
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2023
- 2023-07-05 CN CN202310822289.4A patent/CN116956401A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160341587A1 (en) * | 2014-01-29 | 2016-11-24 | Schlumberger Technology Corporation | Sensing annular flow in a wellbore |
| CN114357833A (en) * | 2021-12-30 | 2022-04-15 | 中天建设集团有限公司 | Shield tunnel synchronous grouting slurry loss calculation method based on finite element analysis |
| CN116291587A (en) * | 2023-04-06 | 2023-06-23 | 中铁二十局集团南方工程有限公司 | Construction method for reinforcing grouting of guide pipe |
Non-Patent Citations (2)
| Title |
|---|
| 孔鲁志;李小芳;: "单管单孔渗透注浆实验研究", 价值工程, no. 27, 7 August 2018 (2018-08-07), pages 133 - 134 * |
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