CN106089252B - Grouting reinforcement method for inhomogeneous loose bodies - Google Patents
Grouting reinforcement method for inhomogeneous loose bodies Download PDFInfo
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- CN106089252B CN106089252B CN201610648894.4A CN201610648894A CN106089252B CN 106089252 B CN106089252 B CN 106089252B CN 201610648894 A CN201610648894 A CN 201610648894A CN 106089252 B CN106089252 B CN 106089252B
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- pipe
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- loose media
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000002787 reinforcement Effects 0.000 title abstract description 6
- 239000002002 slurry Substances 0.000 claims abstract description 25
- 238000005553 drilling Methods 0.000 claims abstract description 14
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 13
- 239000011435 rock Substances 0.000 claims abstract description 9
- 238000009792 diffusion process Methods 0.000 claims abstract description 7
- 238000007711 solidification Methods 0.000 claims abstract 2
- 230000008023 solidification Effects 0.000 claims abstract 2
- 239000004927 clay Substances 0.000 claims description 27
- 238000007569 slipcasting Methods 0.000 claims description 22
- 238000005728 strengthening Methods 0.000 claims description 20
- 238000003306 harvesting Methods 0.000 claims description 14
- 238000010276 construction Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 2
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000011440 grout Substances 0.000 abstract description 5
- 238000009740 moulding (composite fabrication) Methods 0.000 description 17
- 238000000151 deposition Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000003776 cleavage reaction Methods 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 230000007017 scission Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention provides a grouting reinforcement method of a heterogeneous loose body, which comprises the following steps: the method comprises the steps of grouting and reinforcing extremely inhomogeneous loose bodies through a following pipe and a soft PVC pipe which are drilled into the loose bodies, enabling the drilling following pipe to be constructed through a jumbolter by high air pressure and enter the interior of the loose bodies, drilling holes with a certain distance through a following pipe body, enabling the soft PVC pipe to be inserted into the hole bottom at a certain distance, enabling the soft PVC pipe and the following pipe to continuously and automatically form a self-forming grout stop plug formed by cement-water glass slurry solidification along with the lapse of grouting time, and plugging gaps between the following pipe and a rock wall and between the following pipe and the soft PVC pipe by adopting woven bags and cement-water glass slurry concretion bodies near the hole opening position of the following pipe. The grouting reinforcement method in the extremely inhomogeneous loose body provided by the invention has universal adaptability, is simple and rapid to operate and is easy to master by workers. The method solves the problems of multiple grouting accidents in the mesopores of the loose bodies, insufficient or overlarge grouting range diffusion and the like.
Description
Technical field
The invention belongs to rock mechanics and Grouting engineering field, are related to a kind of grouting in rock mass reinforcement means, are particularly suitable for pine
Dissipate the grouting strengthening method of fragmented rock body, pole heterogeneity loose media.
Background technology
In recent years, it with the continuous development of China's infrastructure construction, is required to be limited by geological conditions or capital construction, iron
Road roadbed, tunnel portal are reinforced, the loose media that collapses in tunnel reinforces secondary driving, refuse dump slope reinforcement, underground mine collapse greatly
The important engineerings such as the main chute that collapses closure, pit shaft collapse accident rescue must carry out in complicated loose media stratum, pass through
The most common way on loose media stratum is slip casting, and the general cement-water-clay system for using controlling.Currently, for loose
Cement-water-clay system slip casting also only carries out small-scale trial and application in tunnel etc. caves in body in body, and to loose
The grouting mode of cement-water-clay system, grouting mechanism are indefinite in body, and it is insufficient that slip casting range of scatter is easy in field conduct
Or excessive, slurries scurry into stop grouting plug rear portion and embrace stop grouting plug the drilling accidents such as can not extract, and drastically influence mortar depositing construction progress
With mortar depositing construction quality.Therefore, how the complex conditions large volume loose media such as pole heterogeneity, unsaturation, more gaps is carried out
Grouting and reinforcing is a problem to be solved.
Invention content
Based on the above existing technology problems, the present invention provides a kind of grouting and reinforcing side of heterogeneity loose media
Method can carry out grouting and reinforcing to heterogeneity loose media.
In order to solve the above technical problems, the present invention provides a kind of grouting strengthening method of heterogeneity loose media, including：
The pipe-following drilling for making pipe shaft be drilled with preset space length eyelet by jumbolter construction enters inside loose media, to described
With being inserted into flexible PVC pipe inside pipe, the flexible PVC pipe of insertion is preset distance away from the bottom hole with pipe, through it is described with
Pipe and flexible PVC pipe inject cement-water-clay system into heterogeneity loose media and carry out grouting and reinforcing, and grouting mode is：Bottom hole
Exhaust pipe is inserted at complete opening once grouting, aperture sealing of hole and aperture, in the flexible PVC pipe and described with pipe during slip casting
Between automatically form the self-forming stop grouting plug that constitutes solidified by cement-water-clay system.
Beneficial effects of the present invention：This method enters with pipe inside loose media by using specific drilling, and in the brill
It is inserted into flexible PVC pipe by ad hoc fashion into pipe, and by the row of insertion at bottom hole complete opening once grouting, aperture sealing of hole and aperture
Tracheae carries out grouting and reinforcing, it is ensured that carries out effective slip casting to substantially positive heterogeneity loose media using cement-water-clay system
It reinforces, there is universal adaptability, and easy to operate, quick, be easy to worker's grasp.This method solve slip castings in loose media mesoporous
Frequent Accidents, range of grouting spread the problems such as insufficient or excessive.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the grouting strengthening method schematic diagram that embodiment of the present invention provides；
Fig. 2 is the grouting strengthening method principle schematic that embodiment of the present invention provides；
Each label is corresponding entitled in figure：1- exhaust pipes；2- cement mortar pipes；3- waterglass pipes；4- cement-sodium silicates are starched
Liquid grout pipe；5- accelerated cements-waterglass slurries Seed harvest blockage structure；6- stoppers woven bag；7- country rocks；8- pipe shaft slurry outlets
Eye；9- is with pipe；10- loose medias；11- self-formings stop grouting plug 1；12- self-formings stop grouting plug 2；13- self-formings stop grouting plug 3；14- water
Mud-waterglass slurries Seed harvest.
Specific implementation mode
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, belongs to protection scope of the present invention.
The embodiment of the present invention provides a kind of grouting strengthening method of heterogeneity loose media, be one kind to pole heterogeneity loose media
Grouting strengthening method, construction signal as shown in Figure 1, including：
The pipe-following drilling for making pipe shaft be drilled with preset space length eyelet by jumbolter construction enters inside loose media, to described
With being inserted into flexible PVC pipe inside pipe, the flexible PVC pipe of insertion is preset distance away from the bottom hole with pipe, with cement-water
Glass pulp is that consolidation grouting carries out grouting and reinforcing through the flexible PVC pipe to heterogeneity loose media, and grouting mode is：Bottom hole is complete
Exhaust pipe is inserted at hole once grouting, aperture sealing of hole and aperture, during slip casting the flexible PVC pipe and it is described with pipe it
Between automatically form the self-forming stop grouting plug that constitutes solidified by cement-water-clay system.
In above-mentioned grouting strengthening method, by jumbolter construction make pipe shaft be drilled with the drilling of preset space length eyelet with pipe into
Enter inside loose media and is：It will be entered with pipe construction inside loose media by the jumbolter of high wind pressure and reach basement rock position；
It is described that slip casting is carried out to heterogeneity loose media through the flexible PVC pipe using cement-water-clay system as consolidation grouting
Reinforcing is：Cement-water-clay system is injected into heterogeneity loose media with pipe and flexible PVC pipe through creeping into using biliquid slurry pump
Carry out grouting and reinforcing；
Aperture sealing of hole in the grouting mode is：Woven bag and cement-water are used in the aperture location with pipe
Glass pulp Seed harvest block this between pipe and palisades, should with the gap between pipe and flexible PVC pipe.
In above-mentioned grouting strengthening method, in method, the jumbolter of high wind pressure is to be arranged using mating high wind pressure air compressor machine
Atmospheric pressure is not less than the jumbolter of 1.3MPa.
In above-mentioned grouting strengthening method, woven bag and cement-water-clay system are used in the aperture location with pipe
Seed harvest block this between pipe and palisades, should be in the gap between pipe and flexible PVC pipe, the whole length that blocks is not less than
30cm, wherein cement-water-clay system Seed harvest stemming length are 10cm, setting time of cement-water-clay system is 25~
45s。
In above-mentioned grouting strengthening method, the drilling that pipe shaft is drilled with preset space length eyelet is with pipe：With pipe pipe shaft pulp eyelet
Spacing 30cm, eyelet are in quincuncial arrangement on pipe shaft.
In above-mentioned grouting strengthening method, the flexible PVC pipe of insertion is that preset distance is away from the bottom hole with pipe：It is soft
Matter pvc pipe be inserted into in pore away from hole bottom distance be 0.3~0.5m.
In above-mentioned grouting strengthening method, the setting time of cement-water-clay system is 200s, the water of this kind of setting time
Vertically downwards diffusion length of the mud-waterglass slurries in loose media is 5.0~6.0m, other three direction diffusion lengths 2.5
~3.0m.
The key of grouting strengthening method of the present invention is：Self-forming stop grouting plug structure can be automatically formed during slip casting.It should
The slip casting principle of method is specially：Under the action of after cement-water-clay system is circulated into bottom hole in weight stress, in loose media
The middle advantage perfusion that vertical direction is presented, while with the passage of slip casting time, grout outlet top automatically forms inside with pipe
The self-forming stop grouting plug 1 of the cement-water-clay system Seed harvest of some strength, self-forming stop grouting plug 1 are strong over time
Degree constantly rises；With the continuous progress of slurry filling, the slurries in loose media constantly condense, and idiomorphism is not up in grouting pressure
When being less than consolidating strength in loose media at 1 intensity of stop grouting plug, nondirectional anisotropic reconstruction crackle splitting note occurs
Slurry；When grouting pressure is not enough to the Seed harvest splitting for including by loose media periphery more than 1 intensity of self-forming stop grouting plug, slurries
It condenses to form self-forming stop grouting plug 2 by self-forming stop grouting plug cleavage fracture and along pipe range direction reverse flow, starts simultaneously at the 2nd
Slip casting recycles.Then with the progress of slip casting, the 3rd, 4 ... multiple slip casting cycles are formed, until the last one cycle seals aperture
Aperture apparatus is washed open, and single hole slip casting terminates.
Reinforcement means of the present invention is described further with reference to specific embodiment.
The embodiment of the present invention provides a kind of grouting strengthening method of pole heterogeneity loose media, is particularly suitable for loose crushing rock
Grouting and reinforcing under the conditions of body, pole heterogeneity loose media, Fig. 1 show the schematic diagram of this method, specific as follows：
(1) loose media will be entered with pipe construction by jumbolter and will reach basement rock position, with being inserted into flexible PVC inside pipe
Pipe carries out cement-water-clay system note with pipe and flexible PVC pipe by drilling using biliquid slurry pump to pole heterogeneity loose media
Slurry reinforce, grouting mode be aperture sealing of hole, bottom hole complete opening once grouting, aperture nearby be inserted into exhaust pipe.
(2) drilling is constructed with pipe using jumbolter, jumbolter model M100 in the present embodiment.It is bored with anchor pole
Machine is configured with the high wind pressure air compressor machine of pressure at expulsion 1.3MPa, to ensure to creep under the conditions of lateral pipe shaft slurry outlet ophthalmorrhea wind
The required enough wind pressure of journey.
(3) the pulp eyelet of a determining deviation is drilled with pipe pipe shaft, simultaneously to ensure that high frequency does not occur in pipe shaft work progress
Secondary disconnected pipe and follow-up mortar depositing construction quality, pipe shaft slurry outlet eye spacing 30cm in the present embodiment, quincuncial arrangement.
(4) flexible PVC pipe must be inserted into in pore away from bottom hole certain distance, specifically in 0.3~0.5m.The present embodiment
The length of middle flexible PVC pipe to bottom hole is 0.5m.
(5) nearby to be used with pipe orifice position woven bag and accelerated cement-waterglass slurries Seed harvest block with pipe with
Between palisades, with the gap between pipe and flexible PVC pipe.Woven bag stemming length is 20cm, cement-sodium silicate in the present embodiment
Slurries Seed harvest stemming length is 10cm, and the setting time of cement-water-clay system is 30s.
(6) proportioning of the cement-water-clay system used in the present embodiment includes：The cement mortar ratio of mud is 1:1, waterglass
It is 0.5 with grout volume ratio：1, while the retarder Na added2HPO4It is 3%, setting time 200s.This kind of cement-water glass
Vertically downwards diffusion length of the glass slurries in loose media is 5.0~6.0m, other three direction 2.5~3.0m of diffusion length.
(7) the slip casting principle of this method is used as shown in Fig. 2, being specially：
Under the action of after cement-water-clay system is circulated into bottom hole in weight stress, vertical side is presented in loose media
To advantage perfusion, while with the passage of slip casting time, grout outlet top automatically forms the water of some strength inside with pipe
The self-forming stop grouting plug 1 of mud-waterglass slurries Seed harvest, intensity constantly rises self-forming stop grouting plug 1 over time；
With the continuous progress of slurry filling, the slurries in loose media constantly condense, and self-forming is not up in grouting pressure
1 intensity of stop grouting plug and less than when consolidating strength, nondirectional anisotropic reconstruction crackle fracture grouting occurs in loose media；
When the Seed harvest that grouting pressure is not enough to include by loose media periphery more than 1 intensity of self-forming stop grouting plug cleaves
When, slurries condense to form self-forming stop grouting plug 2 by self-forming stop grouting plug cleavage fracture and along pipe range direction reverse flow, open simultaneously
Begin the 2nd slip casting cycle.
Then with the progress of slip casting, the 3rd, 4 ... multiple slip casting cycles are formed, until the last one is recycled aperture sealing of hole
Device is washed open, and single hole slip casting terminates.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (5)
1. a kind of grouting strengthening method of heterogeneity loose media, which is characterized in that including：
The pipe-following drilling for making pipe shaft be drilled with preset space length eyelet by jumbolter construction enters inside loose media, to described with pipe
Flexible PVC pipe is inserted into inside, and the flexible PVC pipe of insertion is preset distance, the preset distance away from the bottom hole with pipe
For：Flexible PVC pipe is inserted into away from hole bottom distance being 0.3~0.5m in pore, through it is described with pipe and flexible PVC pipe to heterogeneity
Injection cement-water-clay system carries out grouting and reinforcing in loose media, and grouting mode is：Bottom hole complete opening once grouting, aperture sealing of hole
And exhaust pipe is inserted at aperture, in the flexible PVC pipe and described with being automatically formed between pipe by cement-water during slip casting
The self-forming stop grouting plug that glass pulp solidification is constituted；
The setting time of the cement-water-clay system is 200s, the cement-water-clay system of this kind of setting time is in loose media
In diffusion length vertically downwards be 5.0~6.0m, other three direction 2.5~3.0m of diffusion length.
2. a kind of grouting strengthening method of heterogeneity loose media according to claim 1, which is characterized in that described to pass through anchor
Bar drilling machine construction makes pipe shaft be drilled with the drilling of preset space length eyelet and enter inside loose media with pipe：It is bored by the anchor pole of high wind pressure
Machine will enter inside loose media with pipe construction and reach basement rock position；
It is described to inject cement-water-clay system progress grouting and reinforcing into heterogeneity loose media with pipe and flexible PVC pipe through described
For：Cement-water-clay system progress is injected with pipe and flexible PVC pipe into heterogeneity loose media through creeping into using biliquid slurry pump
Grouting and reinforcing；
Aperture sealing of hole in the grouting mode is：Woven bag and cement-sodium silicate are used in the aperture location with pipe
Slurries Seed harvest block this between pipe and palisades, should with the gap between pipe and flexible PVC pipe.
3. a kind of grouting strengthening method of heterogeneity loose media according to claim 2, which is characterized in that the method
In, the jumbolter of high wind pressure is the jumbolter for being not less than 1.3MPa using mating high wind pressure air compressor machine pressure at expulsion.
4. a kind of grouting strengthening method of heterogeneity loose media according to claim 2, which is characterized in that described described
With pipe aperture location using woven bag and cement-water-clay system Seed harvest block should between pipe and palisades, should be with pipe
In gap between flexible PVC pipe, the whole length that blocks is not less than 30cm, and wherein cement-water-clay system Seed harvest blocks
Length is 10cm, and the setting time of cement-water-clay system is 25~45s.
5. a kind of grouting strengthening method of heterogeneity loose media according to any one of claims 1 to 4, which is characterized in that
The drilling that the pipe shaft is drilled with preset space length eyelet is with pipe：With pipe pipe shaft pulp eyelet spacing 30cm, eyelet is on pipe shaft
Quincuncial arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610648894.4A CN106089252B (en) | 2016-08-09 | 2016-08-09 | Grouting reinforcement method for inhomogeneous loose bodies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610648894.4A CN106089252B (en) | 2016-08-09 | 2016-08-09 | Grouting reinforcement method for inhomogeneous loose bodies |
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| CN106089252A CN106089252A (en) | 2016-11-09 |
| CN106089252B true CN106089252B (en) | 2018-10-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411912A (en) * | 2018-05-03 | 2018-08-17 | 大连理工大学 | A kind of convenient method of bolt stress slip casting |
| CN115217124B (en) * | 2021-04-16 | 2024-02-13 | 河北省交通规划设计研究院有限公司 | In-situ retaining structure for slope expansion and excavation and construction method |
| CN113389201B (en) * | 2021-06-30 | 2022-06-21 | 大连理工大学 | Grouting method of efficient anchor rod pressure grouting system |
| CN114439505B (en) * | 2021-11-29 | 2024-08-02 | 陕西彬长孟村矿业有限公司 | Three-dimensional grouting method for roadway engineering roadway |
| CN115126507A (en) * | 2022-05-05 | 2022-09-30 | 中国矿业大学(北京) | Method for forming holes by grouting broken rock ores |
| CN115110917B (en) * | 2022-08-01 | 2024-07-09 | 山东省煤田地质局第四勘探队 | Plug-free rapid slurry blocking device and slurry blocking method in loose stratum grouting borehole |
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| CN106089252A (en) | 2016-11-09 |
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