CN104594370B - Karst high pressure joint rinses grouting method and its structure - Google Patents
Karst high pressure joint rinses grouting method and its structure Download PDFInfo
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- CN104594370B CN104594370B CN201410695167.4A CN201410695167A CN104594370B CN 104594370 B CN104594370 B CN 104594370B CN 201410695167 A CN201410695167 A CN 201410695167A CN 104594370 B CN104594370 B CN 104594370B
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- grouting
- high pressure
- karst
- solution cavity
- cement mortar
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- 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
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- 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
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- 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
Grouting method and its structure are rinsed the invention discloses a kind of karst high pressure joint, when this method runs into filling-type Karst cave or corrosion fissure in filling process, cement mortar or 0.5 is backfilled after charges are gone out by water under high pressure or high-pressure blast, water:1 cement mortar, after taking traditional cements grouting method to be irrigated again after solidifying 24h~72h.It is a kind of economic, efficient grouting treatment technology for Geological Defects locations such as solution cavity, corrosion fissures that the high pressure joint of the present invention, which rinses grouting method, simple with method（Special construction equipment and operating personnel need not be increased）, developing result significantly, can increase substantially construction efficiency, ensure grouting quality the advantages of.When grouting flushing is carried out in Geological Defects locations such as solution cavity, the corrosion fissures of karst with grouting using the present invention, design requirement can be effectively and rapidly reached, and construction efficiency can be increased substantially and waste of raw materials of being in the milk is reduced.
Description
Technical field
The present invention relates to karst geological disposal method, and in particular to a kind of karst high pressure combines douche can
Paste-making method and its structure.
Background technology
Karst topography refer to the water with 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 the mechanical erosion processes such as erosion, the shallow erosion of flowing water, and collapse based on corrosion.
In the Hydraulic and Hydro-Power Engineering impervious grouting processing procedure of karst, filling-type Karst cave or corrosion are frequently encountered
Crack, or strong corrosion area, charges are generally clay, dauk, are not often reached with grouting method using conventional flushing and set
Meter is required, and influences anti-seepage effect.
By current specifications（DL/T5148-2012）It is required that, grout hole（Section）Crack is carried out before grouting to rinse and simple
Press water（Maximum pressure is not more than 1MPa）, whether entered according to design requirement for regulation in the Special zone specification such as solution cavity, tomography
Row is special to be rinsed.At present, general requirement of the designing unit to Special zones such as solution cavity, tomographies is carried out often in Hydraulic and Hydro-Power Engineering
Rule are rinsed, and this normal developing method well can neither go out charges in solution cavity, construction speed and quality are influenceed again, also
Have to be handled using the method such as " encrypting grout hole between former grout hole ", make quantities and investment increasing degree it is larger,
Construction period significantly extends.
Karst Hydraulic and Hydro-Power Engineering impervious grouting《Construction technical requirement》In simple packer permeability test is rinsed to crack
Typically there are clear stipulaties, mostly normal developing, it is rare special when running into the Special zones such as solution cavity, corrosion fissure, shear-zone
The purpose for not reaching flushing not only is rinsed before rinsing requirement, this conventional grout, can be deteriorated on the contrary by the performance of filling rock mass, influence
Grouting quality.
Therefore, for the project seepage controlling grouting treatment of casta region, in the prior art still without preferable skill
Art 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
Problem rinses grouting method there is provided a kind of karst high pressure joint.
The technical scheme is that such：
It is that a kind of karst high pressure joint rinses grouting method first, and this method runs into filling in filling process
When type solution cavity or corrosion fissure, cement mortar or 0.5 is backfilled after charges are gone out by water under high pressure or high-pressure blast, water:1 water
Mud, after taking traditional cements grouting method to be irrigated again after solidifying 24h~72h.This method comprises the following steps：
1）Find out that solution cavity develops scale, the property of charges, roof and floor hole depth or elevation by drilling or geophysical prospecting method；This
Item work is general to utilize the pilot hole that is in the milk（It is not further added by drilled grout hole）Carry out.
2）According to the solution cavity developmental state found out, the grout hole in the Geological Defects location such as reasonable Arrangement solution cavity, corrosion fissure
As flushing hole, these grout holes are filled after the hole depth being drilled into residing for corresponding solution cavity or corrosion fissure using two conventional high-pressures
Stock pump（Parallel connection, Stress control maximum pressure in 3~6MPa, hole depth 40m~100m is no more than 25MPa）Or press pneumatics in joint
Machine（The MPa of Stress control 3~4）High pressure water washing or wind and water combined flushing are carried out, charges in solution cavity are gone out from drilling, directly
To aperture backwater it is peace and quiet when stop.
3）Quickly stuffing 0.5 is answered after the completion of flushing:1 cement mortar or cement mortar, and 24h~72h to be coagulated.
4）Reach after cleaning bottom of hole after the solidifying time and carry out conventional strengthening grouting, until reaching design requirement.
In order to realize such method, present invention employs a kind of such grouting structure suitable for karst：
It is the Geological Defects section for handling karst, and Geological Defects section is located at the lower section of basement rock, and the structure is provided with least
Three drillings, drilling is vertically goed deep into basement rock, and the bottom of drilling is into Geological Defects section；At least two be geomantic omen in three drillings
Import, one is flushing outlet.It is preferred that, two geomantic omen imports are located at the both sides of flushing outlet respectively.
It is a kind of warp for Geological Defects locations such as solution cavity, corrosion fissures that the high pressure joint of the present invention, which rinses grouting method,
Ji, efficient grouting treatment technology are simple with method（Special construction equipment and operating personnel need not be increased）, developing result
Significantly, the advantages of construction efficiency can be increased substantially, ensure grouting quality.The present invention is with a kind of brand-new thinking, with simply, just
Prompt, efficient mode solves the problems, such as that the Geological Defects such as the solution cavity of karst, corrosion fissure location is rinsed and grouting.Using
The present invention, can effectively, soon when the progress grouting of the Geological Defects locations such as solution cavity, the corrosion fissure of karst is rinsed with grouting
Fast reaches design requirement, and can increase substantially construction efficiency and reduce grouting waste of raw materials.
Brief description of the drawings
Fig. 1 rinses grouting structural representation for the joint of the present invention.
Description of reference numerals：1- basement rock, 2- drillings, 3- Geological Defects section, the import of 4- geomantic omens, 5- flushing outlets.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
Referring initially to Fig. 1, the joint that Fig. 1 illustrates the present invention rinses the laying structure being in the milk, from the figure, it can be seen that this hair
It is bright it is to be processed be Geological Defects section 3, the Geological Defects section 3 be located at basement rock 1 in, in the lower section of built in advance engineering.For each
Processing unit engineering, the present invention needs to be drilled with the drilling 2 of more than three, and two of which drilling 2 is as geomantic omen import 4, for rushing
Hole flushing hole is the import of wind and water, and another drilling 2 is as flushing outlet 5, the passage of emerging for washings.Geomantic omen in figure
Import 4 is located at the right and left, and flushing outlet 5 is located at centre.
Embodiment 1：The present invention is applied to the situation of large-scale filling-type Karst cave：The solution-cavity filling thing is mainly clay, clay
Burning into sand etc., hole depth is 45m~67m.Grouting pressure is extremely difficult to design requirement 3.5MPa in filling process, and porous repeatedly multiple filling is still
Not up to design requirement.After present invention construction, design requirement is reached on inspection.
Embodiment 2：The present invention is in the situation in strong corrosion area applied to engineering curtain grouting area：Such case solution cavity
Charges are based on sand and yellow mud, because trial zone scope is smaller, and single hole processing is carried out when running into solution cavity, using dividing from top to bottom
Floor height presses douche, that is, creeps into solution cavity, and then segment length carries out high pressure washing using energy pore-forming as principle（Stress control 4~
7MPa）, flushing is returned to aperture is in the milk again after clear water（Based on grout injection, injection rate is big and is filled with a certain amount of slurries
Can mix the additives such as waterglass in proportion afterwards, Reperfu- sion cement mortar, at the end of cement injection-waterglass slurries）, reach limit
Wait to coagulate after amount standard（Time to be coagulated is generally 24h~72h）, shorten segment length during cleaning bottom of hole, it is impossible to punch hole depth of last time when coagulating,
Then it is in the milk, so handles repeatedly again, until this section, which reaches, carries out next section of processing after design requirement.After construction terminates, through inspection
Look into, above karst cave treatment position construction quality reaches design requirement.
Certainly, it is the concrete application example of the present invention above, the present invention also has other embodiments, all using equivalent
Replacement or the technical scheme of equivalent transformation formation, all fall within protection domain of the presently claimed invention.
Claims (2)
1. a kind of karst high pressure joint rinses grouting method, it is characterised in that：This method runs into filling process and filled
When filling out type solution cavity or corrosion fissure, cement mortar or 0.5 is backfilled after charges are gone out by water under high pressure or high-pressure blast, water:1
Cement mortar, after taking traditional cements grouting method to be irrigated again after solidifying 24h~72h；
Comprise the following steps that：
1）Find out that solution cavity develops scale, the property of charges, roof and floor hole depth or elevation by drilling or geophysical prospecting method；
2）The grout hole in Geological Defects location is arranged as flushing hole, these grout holes are being drilled into corresponding solution cavity or corrosion fissure institute
After the hole depth at place, high pressure water washing or wind and water combined punching are carried out using pressure air compressor machine in two conventional high-pressure grouting pumps or joint
Wash, charges in solution cavity are gone out from drilling, stop when aperture backwater is peace and quiet；
（3）Quickly stuffing 0.5 is answered after the completion of flushing:1 cement mortar or cement mortar, and 24h~72h to be coagulated；
（4）Reach after cleaning bottom of hole after the solidifying time and carry out conventional strengthening grouting, until reaching design requirement；
The step 2）Described in two conventional high-pressure grouting pumps according to being arranged in parallel, Stress control is in 3~6MPa, hole depth 40m
Maximum pressure is no more than 25MPa during~100m；The MPa of Stress control 3~4 of air compressor machine is pressed in the joint；
The grouting structure that karst high pressure joint rinses grouting method application is：Ground for handling karst
Matter defective section（3）, Geological Defects section（3）Positioned at basement rock（1）Lower section, the structure provided with least three drilling（2）, drilling
（2）Vertically go deep into basement rock（1）In, drilling（2）Bottom to Geological Defects section（3）In；Three drillings（2）In at least two be wind
Water inlet（4）, one is flushing outlet（5）.
2. high pressure joint in karst according to claim 1 rinses grouting method, it is characterised in that：Two geomantic omens are entered
Mouthful（4）It is located at flushing outlet respectively（5）Both sides.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410695167.4A CN104594370B (en) | 2014-11-27 | 2014-11-27 | Karst high pressure joint rinses grouting method and its structure |
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| CN201410695167.4A CN104594370B (en) | 2014-11-27 | 2014-11-27 | Karst high pressure joint rinses grouting method and its structure |
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| CN104594370A CN104594370A (en) | 2015-05-06 |
| CN104594370B true CN104594370B (en) | 2017-10-10 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| CN106088094B (en) * | 2016-07-31 | 2018-09-28 | 中水东北勘测设计研究有限责任公司 | High mountain strid Method of Arch Dam Foundation is segmented 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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| CN101509264B (en) * | 2009-03-25 | 2011-12-07 | 李旺雷 | One-step pore-creating, segmenting high pressure cement grout construction method |
| CN102493403A (en) * | 2011-12-07 | 2012-06-13 | 长江勘测规划设计研究有限责任公司 | Rock-fill dam deformation control technology |
| CN204266221U (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 | Be applicable to the grouting structure of karst |
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