CN204266221U - grouting structure suitable for karst region - Google Patents
grouting structure suitable for karst region Download PDFInfo
- Publication number
- CN204266221U CN204266221U CN201420722982.0U CN201420722982U CN204266221U CN 204266221 U CN204266221 U CN 204266221U CN 201420722982 U CN201420722982 U CN 201420722982U CN 204266221 U CN204266221 U CN 204266221U
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- China
- Prior art keywords
- grouting
- utility
- model
- karst
- grout
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- 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.)
- Expired - Fee Related
Links
- 230000007547 defect Effects 0.000 claims abstract description 17
- 239000011435 rock Substances 0.000 claims abstract description 9
- 230000008676 import Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 15
- 230000007797 corrosion Effects 0.000 abstract description 14
- 238000005260 corrosion Methods 0.000 abstract description 14
- 239000011440 grout Substances 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 238000011010 flushing procedure Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 abstract 3
- 239000000243 solution Substances 0.000 description 15
- 239000004568 cement Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000004927 clay Substances 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 239000008267 milk Substances 0.000 description 3
- 210000004080 milk Anatomy 0.000 description 3
- 235000013336 milk Nutrition 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000003325 tomography Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229940059082 douche Drugs 0.000 description 1
- 238000009375 geological disposal Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000010410 reperfusion Effects 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a grout structure suitable for karst area, it is the geological defect section (3) that is used for handling the karst area, and this geological defect section (3) are located the below of basement rock (1), and this structure is equipped with at least three drilling (2), and drilling (2) are vertical to go deep into basement rock (1), and the bottom of drilling (2) is to in geological defect section (3); at least two of the three drill holes (2) are wind and water inlets (4), and one is a flushing outlet (5). The utility model discloses a high pressure is jointly washed grouting method is to an economy, efficient grout processing technology in geological defect district such as solution cavity, corrosion crack, has that the method is simple (need not increase special construction equipment and operating personnel), the flushing effect is showing, can increase substantially construction work efficiency, guarantee advantages such as grout quality.
Description
Technical field
The utility model relates to karst geological disposal method, is specifically related to a kind of grouting structure being applicable to karst.
Background technology
Karst topography refers to that the water with corrosion power carries out to solublerock the general name that corrosion etc. acts on earth's surface and the underground form formed.Water, based on corrosion, also comprises the erosion of flowing water, shallow erosion, and the mechanical erosion process such as to collapse.
In the Hydraulic and Hydro-Power Engineering impervious grouting processing procedure of karst; often can run into filling-type Karst cave or corrosion fissure, or strong corrosion district, charges mostly are clay, loam; adopt conventional flushing and grouting method often not to reach designing requirement, and affect anti-seepage effect.
By current specifications (DL/T5148-2012) requirement, grout hole (section) will carry out crack and rinse and simple and easy setting-out (maximum pressure is not more than 1MPa) before grouting, whether carries out special flushing for regulation in the Special zone such as solution cavity, tomography specification according to designing requirement.At present, in Hydraulic and Hydro-Power Engineering, designing unit carries out normal developing to the General Requirements of the Special zone such as solution cavity, tomography, charges in solution cavity can not well be gone out by this normal developing method, affect again construction speed and quality, also have to adopt the method such as " encrypting grout hole between former grout hole " to process, make engineering quantity and investment increasing degree is comparatively large, the construction period significantly extends.
In karst Hydraulic and Hydro-Power Engineering impervious grouting " construction technical requirement ", simple and easy packer permeability test is rinsed to crack and generally have clear stipulaties, mostly be normal developing, when running into the Special zone such as solution cavity, corrosion fissure, fault zone, rare special rinsing requirement, before this conventional grout, flushing does not only reach the object of flushing, can worsen on the contrary by the performance of filling with rock mass, affect grouting quality.
Therefore, for the project seepage controlling grouting treatment of casta region, in prior art, desirable technical scheme is not still had.
Utility model content
The purpose of this utility model is, into the problem solved to the project seepage controlling grouting treatment of casta region in prior art, to provide a kind of grouting structure being applicable to karst.
The technical solution of the utility model is such:
The utility model have employed so a kind of grouting structure being applicable to karst: it is the Geological Defects section for the treatment of karst, this Geological Defects section is positioned at the below of basement rock, this structure is provided with at least three borings, boring is vertically goed deep in basement rock, and the bottom of boring is in Geological Defects section; In three borings, at least two is geomantic omen import, and one for rinsing outlet.Preferably, two geomantic omen imports lay respectively at the both sides rinsing outlet.
According to this grouting structure being applicable to karst, when this utility model runs into filling-type Karst cave or corrosion fissure in filling process, by water under high pressure or high-pressure blast, water, charges are gone out the cement paste of rear backfill cement mortar or 0.5:1, after solidifying 24h ~ 72h, take traditional cements grouting method to pour into again.Specifically comprise the steps: during grouting
1) find out that solution cavity grows scale, the character of charges, roof and floor hole depth or elevation by boring or geophysical prospecting method; This work general grouting pilot hole (no longer increasing drilled grout hole) is carried out.
2) according to the solution cavity developmental state found out, the grout hole in the Geological Defects locations such as reasonable Arrangement solution cavity, corrosion fissure is as flushing hole, these grout holes are after being drilled into the hole depth residing for corresponding solution cavity or corrosion fissure, utilize two conventional high-pressure grout pumps (in parallel, Stress control is at 3 ~ 6MPa, during hole depth 40m ~ 100m, maximum pressure is no more than 25MPa) or press air compressor machine (Stress control 3 ~ 4 MPa) to carry out high pressure water washing or wind and water combined flushing in combining, charges in solution cavity are gone out from boring, until when aperture backwater is peace and quiet only.
3) answer cement paste or the cement mortar of quickly stuffing 0.5:1 after having rinsed, and treat solidifying 24h ~ 72h.
4) reach cleaning bottom of hole after the solidifying time and carry out conventional strengthening grouting, until reach designing requirement.
High pressure of the present utility model combines that to rinse grouting structure be for the one economy in the Geological Defects such as solution cavity, corrosion fissure location, efficiently grouting treatment technology, have method simple (not needing to increase special construction equipment and operating personnel), developing result significantly, construction efficiency can be increased substantially, ensure the advantages such as grouting quality.The utility model is with a kind of brand-new thinking, and the Geological Defects location such as solution cavity, corrosion fissure solving karst in simple, convenient, efficient mode is rinsed and grouting problem.Adopt the Geological Defects locations such as the solution cavity of the utility model in karst, corrosion fissure to carry out grouting to rinse with when being in the milk, designing requirement can be reached effectively and rapidly, and construction efficiency can be increased substantially and reduce grouting waste of raw materials.
Accompanying drawing explanation
Fig. 1 rinses grouting structural representation of the present utility model associating.
Description of reference numerals: 1-basement rock, 2-holes, and 3-Geological Defects section, the import of 4-geomantic omen, 5-rinses outlet.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.
First see Fig. 1, Fig. 1 illustrates laying structure of combining flushing grouting of the present utility model, and as we can see from the figure, the utility model is to be processed is Geological Defects section 3, and this Geological Defects section 3 is arranged in basement rock 1, is building the below of engineering in advance.For each processing unit engineering, the utility model needs the boring 2 being drilled with more than three, and wherein two borings 2 are as geomantic omen import 4, and for rinsing the import that hole is wind and water, another boring 2 conduct rinses outlet 5, for rinsing the passage of emerging of thing.Geomantic omen import 4 in figure is positioned at the right and left, rinses outlet 5 and is positioned at centre.
Embodiment 1: the utility model is applied to the situation of large-scale filling-type Karst cave: this solution-cavity filling thing is mainly clay, clay burning into sand etc., and hole depth is 45m ~ 67m.In filling process, grouting pressure is difficult to reach designing requirement 3.5MPa, and porous is repeatedly answered filling and reached designing requirement not yet.After adopting the utility model construction, reach designing requirement on inspection.
Embodiment 2: the utility model is applied to the situation that engineering curtain grouting district is in strong corrosion district: this situation solution-cavity filling thing is based on sand and yellow mud, because trial zone scope is less, single hole process is carried out when running into solution cavity, adopt layering high pressure douche from top to bottom, namely creep into solution cavity, segment length with can pore-forming for principle, then high pressure washing (Stress control is at 4 ~ 7MPa) is carried out, rinse and be in the milk (based on grout injection again after returning clear water to aperture, injection rate is large and can mix the Admixtures such as water glass in proportion after having poured into a certain amount of slurries, Reperfu-sion cement paste, at the end of cement injection-water glass slurries), wait after reaching limit standard to coagulate (treating that the solidifying time is generally 24h ~ 72h), segment length is shortened during cleaning bottom of hole, the hole depth of last time when solidifying can not be punched, and then be in the milk, so repeatedly process, until this section carries out next section of process after reaching designing requirement.After construction terminates, on inspection, above karst cave treatment position construction quality all reaches designing requirement.
Certainly, more than just embody rule example of the present utility model, the technical scheme that the utility model also has other embodiment, all employings to be equal to replacement or equivalent transformation to be formed, all drops within the protection domain required by the utility model.
Claims (2)
1. one kind is applicable to the grouting structure of karst, it is the Geological Defects section (3) for the treatment of karst, this Geological Defects section (3) is positioned at the below of basement rock (1), it is characterized in that: this structure is provided with at least three borings (2), boring (2) is vertically goed deep in basement rock (1), and the bottom of boring (2) is in Geological Defects section (3); In three borings (2), at least two is geomantic omen import (4), and one for rinsing outlet (5).
2. the grouting structure being applicable to karst according to claim 1, is characterized in that: two geomantic omen imports (4) lay respectively at the both sides rinsing outlet (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420722982.0U CN204266221U (en) | 2014-11-27 | 2014-11-27 | grouting structure suitable for karst region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420722982.0U CN204266221U (en) | 2014-11-27 | 2014-11-27 | grouting structure suitable for karst region |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204266221U true CN204266221U (en) | 2015-04-15 |
Family
ID=52801093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420722982.0U Expired - Fee Related CN204266221U (en) | 2014-11-27 | 2014-11-27 | grouting structure suitable for karst region |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204266221U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594370A (en) * | 2014-11-27 | 2015-05-06 | 中国电建集团贵阳勘测设计研究院有限公司 | High-pressure combined flushing grouting method and structure in karst region |
| CN106638606A (en) * | 2016-12-29 | 2017-05-10 | 中国葛洲坝集团基础工程有限公司 | Rapid grouting method of deep overburden layer |
-
2014
- 2014-11-27 CN CN201420722982.0U patent/CN204266221U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594370A (en) * | 2014-11-27 | 2015-05-06 | 中国电建集团贵阳勘测设计研究院有限公司 | High-pressure combined flushing grouting method and structure in karst region |
| CN106638606A (en) * | 2016-12-29 | 2017-05-10 | 中国葛洲坝集团基础工程有限公司 | Rapid grouting method of deep overburden layer |
| CN106638606B (en) * | 2016-12-29 | 2019-08-23 | 中国葛洲坝集团基础工程有限公司 | A kind of quick grouting method of deep covering layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20181127 |