CN104594369B - Karst region high-pressure group hole replacement grouting method and structure thereof - Google Patents
Karst region high-pressure group hole replacement grouting method and structure thereof Download PDFInfo
- Publication number
- CN104594369B CN104594369B CN201410694710.9A CN201410694710A CN104594369B CN 104594369 B CN104594369 B CN 104594369B CN 201410694710 A CN201410694710 A CN 201410694710A CN 104594369 B CN104594369 B CN 104594369B
- Authority
- CN
- China
- Prior art keywords
- drilling
- displacement
- grouting
- solution cavity
- hole
- 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
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005553 drilling Methods 0.000 claims abstract description 50
- 239000004568 cement Substances 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 239000000243 solution Substances 0.000 claims description 42
- 238000006073 displacement reaction Methods 0.000 claims description 41
- 239000011440 grout Substances 0.000 claims description 17
- 238000011161 development Methods 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 8
- 239000011083 cement mortar Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 6
- 238000003973 irrigation Methods 0.000 claims description 6
- 230000002262 irrigation Effects 0.000 claims description 6
- 238000002513 implantation Methods 0.000 claims description 2
- 230000008676 import Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 230000010412 perfusion Effects 0.000 claims description 2
- 239000011435 rock Substances 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 3
- 235000019994 cava Nutrition 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000004927 clay Substances 0.000 description 4
- 239000008267 milk Substances 0.000 description 4
- 210000004080 milk Anatomy 0.000 description 4
- 235000013336 milk Nutrition 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000256135 Chironomus thummi Species 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009375 geological disposal Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000009467 reduction Effects 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
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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
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 region high-pressure group hole replacement grouting method and a structure thereof, wherein a grouting gallery or a flat cave (2) is arranged above a karst cave region (1), a drilling hole (3) is distributed in the grouting gallery or the flat cave (2) to the karst cave region (1), the lower end of the drilling hole (3) is positioned in the karst cave region (1), and the range of the drilling hole (3) is divided into a replacement inlet region (4) and a replacement outlet region (5); and (3) injecting sand-doped cement slurry with the mass ratio of 0.5:1 into the drill hole (3) of the replacement inlet area (4) at high pressure, filling all or most of karst caves, extruding out from the drill hole (3) of the replacement outlet area (5), and pouring by adopting a conventional cement grouting method after setting for 24-36 h. The grouting method can solve the grouting problem of geological defect sections such as small and medium filling type karst caves and the like in the karst region, and has the advantages of simple method, capability of greatly prolonging the construction period, low cost, remarkable effect, capability of ensuring grouting quality and the like.
Description
Technical field
The present invention relates to karst geological disposal method, and in particular to a kind of karst high pressure group hole displacement fills
Paste-making method and its structure.
Background technology
Karst topography refer to have the water of corrosion power solublerock is carried out the formed earth's surface of the effect such as corrosion and
The general name of underground form.Water includes erosion, the shallow erosion of flowing water, and the mechanical erosion process such as collapse based on corrosion.
Hydraulic and Hydro-Power Engineering is built in karst, its reservoir Karst Filter Zone is one of major project problem, is selected
Can suitable and effective anti-seepage scheme is related to reservoir normal water storage.Karst impervious grouting handles engineering with water at present
Based on mud grouting.During grouting construction, big and small filling clay, the solution cavity of dauk are frequently encountered, is used
Conventional grouting method does not reach design requirement.Current specifications（DL/T5148-2012）There is specially filling-type Karst cave grouting in although
Door requires, you can using engineering measures such as high-pressure grouting, high pressure phase equilibria, low pressure, underflow, current limliting, limitation, intervals, but
During practice of construction these methods often exist the construction time it is long, costly, anti-seepage effect is poor the shortcomings of.
When grout hole runs into the solution cavity of the fillings such as clay, dauk, often there is collapse hole, bit freezing, burying, the leakage of string hole
The problems such as slurry, in addition to midge amount is very big, construction speed and construction quality are also had a strong impact on, although using conventional grouting measure
Processing has certain effect, but after constructing again to the solution cavity section, its construction water often again deteriorates its character, again must not
Do not repeat to be in the milk, and so on repeatedly, cause the significant wastage of grouting material, and do not reach preferably processing effect also
Fruit.
Therefore, for the processing of such Geological Defects, in the prior art still without preferable technical scheme.
The content of the invention
It is an object of the invention to solve in the prior art to the project seepage controlling grouting treatment of casta region
A kind of problem, there is provided karst high pressure group hole replacement grouting method.
It is the technical scheme is that such：
It employs such a grouting structure：Irrigation gallery or adit are set in the top in solution cavity area, in irrigation gallery
Or adit is laid to solution cavity area and drilled, the lower end of drilling is located in solution cavity area, and drilling location is divided into displacement entrance region
With displacement outlet area；Orifice sealing device is installed at the aperture of the drilling in region.The pitch-row of drilling is 2~2.5m.Grouting
When, it is 0.5 in the drilling mesohigh implantation quality ratio of displacement entrance region:1 mixes sand cement slurry, by solution-cavity filling is whole or big portion
Divide from the drilling of displacement outlet area and extrude, take traditional cements grouting method to be irrigated again after solidifying 24h~36h.
Specifically, this group of hole replacement grouting methods comprise the following steps：
1）Utilize grout hole, pilot hole（Generally be in the milk pilot hole or I sequence grout hole）Or physical prospecting means find out solution cavity area
The development scale of middle solution cavity, the property of charges, roof and floor hole depth elevation；
2）All grout holes in solution cavity area are constructed to more than Upper Plate of Karst Cave 1~2m by the grouting order of design requirement,
1~2m of complete basement rock below solution cavity bottom plate is pierced again；
3）It is determined that displacement entrance region and displacement outlet area, and determination can be as the drilling of displacement entrance region and displacement outlet area
Grout hole, the then mounting hole sealer at the aperture of all drillings, wherein the aperture in the drilling of displacement outlet area is close
Valve on envelope device is in open mode；
Drilling namely using existing grout hole as replacement grouting, and can not have to carry out secondary drilling.But not
All existing grout holes can act as the drilling of the replacement grouting of the present invention, it is determined that displacement entrance region and displacement outlet area
The principle of drilling is：
When solution cavity development is horizontal or near horizontal direction, the grout hole in solution cavity area can be used as displacement entrance region and put
Swap out the drilling of mouth region；
When solution cavity development is incline direction, drilling of the grout hole of low elevation as displacement entrance region in solution cavity area.
4）High-pressure rubber pipe on high pressure mortar pump is connected with replacing the orifice sealing device of entrance region, and pressurizes and is noted into hole
Enter the ratio of mud for 0.5:1 cement mortar, grouting pressure are controlled in 4~6MPa；
5）When solution-cavity filling thing occurs in the drilling orifice for replacing outlet area, replace infusion in the drilling of entrance region and adjust
To mix sand cement slurry, sand ratio is mixed（Cement weight ratio）For 10%, 20%, 30% three-level, and by from as low as being mixed step by step into cement mortar greatly
Enter；
6）When cement mortar occurs in the drilling orifice for replacing outlet area, suspend replacement operator；The drilling of outlet area will be replaced
On orifice sealing device valve close after be further continued for perfusion mix sand cement slurry, until import drilling injection rate be no more than 5L/min
It can terminate to replace, and 36h~48h to be coagulated；
7）Reach after the solidifying time, to routinely grouting method carries out strengthening grouting in order in solution cavity area, until passing through
The solution cavity fills section.
When being in the milk using the present invention in the solution cavity location that karst clay and dauk fill, rationally utilize
Grout hole（Do not increase quantities）Solution-cavity filling thing is replaced, can fast and effeciently reach design requirement, while also can significantly carry
High construction efficiency and reduction grouting material waste.The high pressure replacement grouting method of the present invention is to be less than 5m packed type for height
A kind of quick, economic, efficient grouting treatment technology of solution cavity, have method simple（Use live grouting equipment and operation people
Member, it is not necessary to increase special construction equipment and special operation workers）, can increase substantially low construction time, expense, significant effect,
The advantages that can guarantee that grouting quality.
The present invention solves the middle-size and small-size filling of karst with a kind of brand-new thinking in a manner of simple, efficient
The grouting problem in the Geological Defects such as type solution cavity location.
Brief description of the drawings
Fig. 1 is the group hole replacement grouting planar structure schematic diagram of the present invention；
Fig. 2 is the A-A diagrammatic cross-sections in Fig. 1.
Description of reference numerals：1- solution cavities area, 2- irrigation galleries or adit, 3- drillings, 4- displacement entrance regions, 5- displacements outlet
Area.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 and Fig. 2 are seen, wherein Fig. 1 illustrates the floor map of this grouting structure of the present invention, and Fig. 2 is illustrated
A-A diagrammatic cross-sections in Fig. 1, from fig. 2 it can be seen that the development direction in the solution cavity area 1 is similar to horizontal direction, slightly to the right
Inclined downward, the present invention are to set irrigation gallery or adit 2 in the top in solution cavity area 1, in irrigation gallery or adit 2 to solution cavity area
1 lays drilling 3, and using the I sequences grout hole that has been drilled in previous process as drilling 3,3 lower end of drilling is located at solution cavity area
In 1；After drilling 3 is determined, 3 locations of drilling are divided into displacement entrance region 4 and displacement outlet area 5.
Left-hand component is displacement outlet area 5 in Fig. 2, and right-hand component is displacement entrance region 4, and from fig. 2 it can be seen that right
The solution cavity elevation of the displacement entrance region 4 on side is lower than the left side, therefore using the right as displacement entrance region 4, is so compared with the right side
Side priming charge mud extrudes the charges in left-hand component solution cavity completely from the drilling 3 of left-hand component；In addition, drilling
Orifice sealing device is installed at 3 aperture, will so replace the orifice closing of the drilling 3 of entrance region 4, and in displacement outlet area 5
Aperture open wide, such cement mortar high pressure effect under, in solution cavity can only from displacement entrance region 4 to displacement outlet area 5 side
To flowing, most the charges in solution cavity are extruded from the aperture of the drilling 3 of displacement outlet area 5 at last.
It will be noted from fig. 1 that drilling 3 is evenly arranged in the range of the development in solution cavity area 1, according to the development in solution cavity area 1
Scope selects quincuncial arrangement or two row's interlaced arrangements as shown in Figure 1, it is preferred that 3 pitch-row of drilling is 2~2.5m.
Embodiment 1：
The filling-type Karst cave in adit curtain grouting area, charges are mainly clay under some hydropower station, are easily occurred porous
Communicate（String water, grout leaking）Phenomenon, it is porous to be unable to reach design requirement by repeatedly multiple fill, at the method using the present invention
Reason, design requirement can be met through inspection hole inspection of being in the milk after processing completion.
Certainly, the above is the concrete application example of the present invention, and the present invention also has other embodiments, all using equivalent
The technical scheme that replacement or equivalent transformation are formed, all falls within protection domain of the presently claimed invention.
Claims (2)
- A kind of 1. karst high pressure group hole replacement grouting method, it is characterised in that：In solution cavity area（1）Top set grouting Gallery or adit（2）, in irrigation gallery or adit（2）To solution cavity area（1）Lay drilling（3）, drilling（3）Lower end be located at solution cavity Area（1）In, it will drill（3）Location is divided into displacement entrance region（4）With displacement outlet area（5）；In displacement entrance region（4）'s Drilling（3）Mesohigh implantation quality ratio is 0.5:1 sand cement of mixing is starched, by solution-cavity filling wholly or largely from displacement outlet area （5）Drilling（3）Middle extrusion, traditional cements grouting method is taken to be irrigated again after solidifying 24h~36h；This method comprises the following steps：1）Solution cavity area is found out using grout hole, pilot hole or physical prospecting means（1）The development scale of middle solution cavity, the property of charges, Roof and floor hole depth elevation；2）By solution cavity area（1）Interior all grout holes are constructed to more than Upper Plate of Karst Cave 1~2m by the grouting order of design requirement, then Pierce 1~2m of complete basement rock below solution cavity bottom plate；3）It is determined that displacement entrance region（4）With displacement outlet area（5）, and determine that displacement entrance region can be used as（4）With displacement outlet area （5）Drilling（3）Grout hole, then in all drillings（3）Aperture at mounting hole sealer, wherein replacing outlet area （5）Drilling（3）On orifice sealing device on valve be in open mode；4）By the high-pressure rubber pipe on high pressure mortar pump and displacement entrance region（4）Orifice sealing device be connected, and pressurize and noted into hole Enter the ratio of mud for 0.5:1 cement mortar；5）When displacement outlet area（5）Drilling（3）When solution-cavity filling thing occurs in aperture, entrance region is replaced（4）Drilling（3）Interior note Enter thing and be adjusted to mix sand cement slurry, it is 10%, 20%, 30% three-level to mix sand ratio, and by from as low as being mixed step by step into cement mortar greatly；6）When displacement outlet area（5）Drilling（3）When cement mortar occurs in aperture, suspend replacement operator；Outlet area will be replaced（5）'s Drilling（3）On orifice sealing device valve close after be further continued for perfusion mix sand cement slurry, until import drilling injection rate be not more than 5L/min can terminate to replace, and 36h~48h to be coagulated；7）Reach after the solidifying time, to solution cavity area（1）Inside routinely grouting method carries out strengthening grouting in order.
- 2. karst high pressure group hole according to claim 1 replacement grouting method, it is characterised in that：Step 3）It is determined that Replace entrance region（4）With displacement outlet area（5）Drilling（3）Principle be：When solution cavity development is horizontal or near horizontal direction, Solution cavity area（1）Interior grout hole can be used as displacement entrance region（4）With displacement outlet area（5）Drilling（3）；When solution cavity development is incline direction, solution cavity area（1）The grout hole of interior low elevation is as displacement entrance region（4）Drilling （3）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410694710.9A CN104594369B (en) | 2014-11-27 | 2014-11-27 | Karst region high-pressure group hole replacement grouting method and structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410694710.9A CN104594369B (en) | 2014-11-27 | 2014-11-27 | Karst region high-pressure group hole replacement grouting method and structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104594369A CN104594369A (en) | 2015-05-06 |
| CN104594369B true CN104594369B (en) | 2017-12-05 |
Family
ID=53120396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410694710.9A Active CN104594369B (en) | 2014-11-27 | 2014-11-27 | Karst region high-pressure group hole replacement grouting method and structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104594369B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437692B (en) * | 2016-08-23 | 2023-03-21 | 中国电建集团贵阳勘测设计研究院有限公司 | Deep karst leakage channel detection structure and method based on water level of inner pipe of drill rod |
| CN106837411B (en) * | 2017-02-04 | 2020-04-03 | 长江勘测规划设计研究有限责任公司 | Arrangement structure and method for filling and grouting of deep-buried shield tunnel |
| CN111733794A (en) * | 2020-06-11 | 2020-10-02 | 中铁一局集团第二工程有限公司 | Method for determining safe thickness of side wall of karst area of foundation pit and grouting device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6834720B1 (en) * | 2001-12-03 | 2004-12-28 | Sandia Corporation | Method and apparatus for injecting particulate media into the ground |
| JP2005048518A (en) * | 2003-07-31 | 2005-02-24 | World Engineering Kk | Controlled type revetment |
| CN202227325U (en) * | 2011-08-18 | 2012-05-23 | 水利部交通运输部国家能源局南京水利科学研究院 | Structure for reducing and preventing sound and vibration of service gate of water-filling gallery by means of natural ventilation |
| CN104179159B (en) * | 2014-09-11 | 2016-05-25 | 武汉大学 | Power station bright flowing full tail water system |
| CN204266222U (en) * | 2014-11-27 | 2015-04-15 | 中国电建集团贵阳勘测设计研究院有限公司 | Group hole replacement grouting structure suitable for karst region |
| CN104790404B (en) * | 2015-05-05 | 2016-08-24 | 中国电建集团中南勘测设计研究院有限公司 | A kind of dam foundation high-pressure grouting structure and grouting method |
-
2014
- 2014-11-27 CN CN201410694710.9A patent/CN104594369B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104594369A (en) | 2015-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103967507B (en) | A kind of curtain-grouting technique being suitable for rich water mine down-hole exploitation water blockoff | |
| CN109208637A (en) | Increase the construction method of open-cut station newly on the basis of existing tunnel | |
| CN101525881B (en) | Structure of karst strata pile holes protecting wall and method for constructing pile holes | |
| CN106320354B (en) | The Seepage method on solution cavity development stratum under coating | |
| CN103866780B (en) | A kind of construction method of carrying out quick seepage preventing curtain grouting in karst blowby area | |
| CN105201001B (en) | Composite seepage-proofing structure of large karst cave in karst region and construction method thereof | |
| CN104963334A (en) | Construction method for utilizing grouting freezing pipe to reinforce and freeze contact passage to restrain frost heaving and thaw collapsing | |
| CN105926624B (en) | Inverse-stopping type set hole grouting device and its construction method | |
| CN102787602A (en) | Curtain grouting technique | |
| CN105041264B (en) | A kind of mash gas pumping drilling whirl spraying solidify can multiple sealing of hole method | |
| CN103912003B (en) | The method of water and hole is moved on a kind of simple and efficient shutoff stratum | |
| CN104612130A (en) | Method for processing grouting position of hidden cave at bottom of tunnel | |
| CN105887886A (en) | Strong karst development stratum curtain grouting construction method | |
| CN109322699A (en) | Pollution isolation blocking technology under a kind of mine | |
| CN103696416B (en) | A kind of method for processing foundation | |
| CN109538295A (en) | Seal groundwater in mining area library system | |
| CN104594369B (en) | Karst region high-pressure group hole replacement grouting method and structure thereof | |
| CN107178077B (en) | karst area karst cave overburden grouting reinforcement structure and design method thereof | |
| CN105731978B (en) | A kind of grouting serous fluid and grouting method for fine sand layer jacking culvert solidifying of the working face | |
| CN108867673A (en) | A kind of underwater prevention method in the foundation pit based on the curtain that draws water | |
| CN103556646A (en) | Method for forming water shutoff walls in sand and gravel layer | |
| CN205062827U (en) | Composite seepage-proofing structure of large karst cave in karst area | |
| CN103883291B (en) | Throw gravel in Hydrology well casing and become well equipment and construction method | |
| CN103967506B (en) | A kind of ore body roof Karst Fissures is grown and the curtain-grouting method in strong Fu Shui mineral deposit | |
| CN204266222U (en) | Group hole replacement grouting structure suitable for karst region |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |