CN104594370A - High-pressure combined flushing grouting method and structure in karst region - Google Patents
High-pressure combined flushing grouting method and structure in karst region Download PDFInfo
- Publication number
- CN104594370A CN104594370A CN201410695167.4A CN201410695167A CN104594370A CN 104594370 A CN104594370 A CN 104594370A CN 201410695167 A CN201410695167 A CN 201410695167A CN 104594370 A CN104594370 A CN 104594370A
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- grouting
- karst
- flushing
- pressure
- paste
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 15
- 230000007797 corrosion Effects 0.000 claims abstract description 18
- 238000005260 corrosion Methods 0.000 claims abstract description 18
- 230000007547 defect Effects 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000004568 cement Substances 0.000 claims abstract description 10
- 239000011083 cement mortar Substances 0.000 claims abstract description 6
- 239000011440 grout Substances 0.000 claims description 13
- 229940059082 douche Drugs 0.000 claims description 9
- 230000008676 import Effects 0.000 claims description 8
- 239000011435 rock Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005429 filling process Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 235000019994 cava Nutrition 0.000 abstract 3
- 239000000945 filler Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 14
- 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
- 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
- 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
- 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
- 238000012876 topography Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a karst area high-pressure combined flushing grouting method and a structure thereof, wherein when filling type karst caves or corrosion cracks are met in the grouting process, cement mortar or cement paste with the ratio of 0.5:1 is backfilled after fillers are flushed out by high-pressure water or high-pressure wind and water, and the conventional cement grouting method is adopted for grouting after the cement mortar is solidified for 24-72 hours. The high-pressure combined flushing grouting method is an economical and efficient grouting treatment technology aiming at geological defect sites such as karst caves, corrosion cracks and the like, and has the advantages of simple method (no need of adding special construction equipment and operators), remarkable flushing effect, capability of greatly improving construction efficiency, grouting quality guarantee and the like. When the grouting flushing and grouting method is adopted to perform grouting flushing and grouting in geological defect sections such as karst caves, corrosion cracks and the like in karst regions, the design requirements can be effectively and quickly met, the construction efficiency can be greatly improved, and the waste of grouting raw materials can be reduced.
Description
Technical field
The present invention relates to karst geological disposal method, be specifically related to a kind of karst high pressure associating douche can paste-making method and structure thereof.
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.
Summary of the invention
The object of the invention is to the problem for solving to the project seepage controlling grouting treatment of casta region in prior art, a kind of karst high pressure associating douche can paste-making method is provided.
Technical scheme of the present invention is such:
First it is a kind of karst high pressure associating douche can paste-making method, when the method 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.The method comprises the steps:
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.
In order to realize such method, present invention employs 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.
High pressure of the present invention associating douche can paste-making method is 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 present invention 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 present invention 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 invention 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 present invention is described in further detail.
First see Fig. 1, Fig. 1 illustrates laying structure of combining flushing grouting of the present invention, and as we can see from the figure, the present invention 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 present invention 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 present invention 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 present invention's construction, reach designing requirement on inspection.
Embodiment 2: the present invention 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 invention, the technical scheme that the present invention also has other embodiment, all employings to be equal to replacement or equivalent transformation to be formed, all drops within protection domain of the presently claimed invention.
Claims (5)
1. a karst high pressure associating douche can paste-making method, it is characterized in that: when the method 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.
2. karst according to claim 1 high pressure associating douche can paste-making method, is characterized in that the method comprises the steps:
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;
2) arrange that the grout hole in Geological Defects location is as flushing hole, these grout holes are after being drilled into the hole depth residing for corresponding solution cavity or corrosion fissure, utilizing in two conventional high-pressure grout pumps or associating presses air compressor machine to carry out high pressure water washing or wind and water combined flushing, 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.
3. karst according to claim 2 high pressure associating douche can paste-making method, it is characterized in that: step 2) described in two conventional high-pressure grout pumps according to being arranged in parallel, Stress control is at 3 ~ 6MPa, and during hole depth 40m ~ 100m, maximum pressure is no more than 25MPa; Stress control 3 ~ 4 MPa of air compressor machine is pressed in described associating.
4. 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).
5. the grouting structure being applicable to karst according to claim 4, 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 |
|---|---|---|---|
| CN201410695167.4A CN104594370B (en) | 2014-11-27 | 2014-11-27 | High-pressure combined flushing grouting method and structure in karst region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410695167.4A CN104594370B (en) | 2014-11-27 | 2014-11-27 | High-pressure combined flushing grouting method and structure in karst region |
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| Publication Number | Publication Date |
|---|---|
| CN104594370A true CN104594370A (en) | 2015-05-06 |
| CN104594370B CN104594370B (en) | 2017-10-10 |
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| CN201410695167.4A Active CN104594370B (en) | 2014-11-27 | 2014-11-27 | High-pressure combined flushing grouting method and structure in karst region |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862725A (en) * | 2016-03-31 | 2016-08-17 | 大连久鼎祥瑞特种工程技术研究院有限公司 | Underground construction preliminary grouting waterproof and anti-seepage supporting technology |
| CN105887886A (en) * | 2016-06-16 | 2016-08-24 | 中国水利水电第十工程局有限公司 | Strong karst development stratum curtain grouting construction method |
| CN106088094A (en) * | 2016-07-31 | 2016-11-09 | 中水东北勘测设计研究有限责任公司 | High mountain strid Method of Arch Dam Foundation segmentation stage grouting method |
| CN106498965A (en) * | 2016-12-05 | 2017-03-15 | 广西大学 | A kind of karst area water sealing consolidation construction method |
| CN113152412A (en) * | 2021-04-30 | 2021-07-23 | 中国葛洲坝集团第一工程有限公司 | Foundation pit slope karst seepage-proofing reinforcing treatment method |
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2014
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862725A (en) * | 2016-03-31 | 2016-08-17 | 大连久鼎祥瑞特种工程技术研究院有限公司 | Underground construction preliminary grouting waterproof and anti-seepage supporting technology |
| CN105887886A (en) * | 2016-06-16 | 2016-08-24 | 中国水利水电第十工程局有限公司 | Strong karst development stratum curtain grouting construction method |
| CN105887886B (en) * | 2016-06-16 | 2018-02-27 | 中国水利水电第十一工程局有限公司 | A kind of strong karsts developing area stratum Curtain Grouting Construction method |
| CN106088094A (en) * | 2016-07-31 | 2016-11-09 | 中水东北勘测设计研究有限责任公司 | High mountain strid Method of Arch Dam Foundation segmentation stage grouting method |
| CN106498965A (en) * | 2016-12-05 | 2017-03-15 | 广西大学 | A kind of karst area water sealing consolidation construction method |
| CN113152412A (en) * | 2021-04-30 | 2021-07-23 | 中国葛洲坝集团第一工程有限公司 | Foundation pit slope karst seepage-proofing reinforcing treatment method |
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| Publication number | Publication date |
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| CN104594370B (en) | 2017-10-10 |
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