CN107227740A - The construction method that limestone cave cell wall is closed in construction of diaphragm wall - Google Patents
The construction method that limestone cave cell wall is closed in construction of diaphragm wall Download PDFInfo
- Publication number
- CN107227740A CN107227740A CN201710602537.9A CN201710602537A CN107227740A CN 107227740 A CN107227740 A CN 107227740A CN 201710602537 A CN201710602537 A CN 201710602537A CN 107227740 A CN107227740 A CN 107227740A
- Authority
- CN
- China
- Prior art keywords
- grouting
- hole
- solution cavity
- wall
- diaphragm wall
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 19
- 235000019738 Limestone Nutrition 0.000 title claims abstract description 11
- 239000006028 limestone Substances 0.000 title claims abstract description 11
- 210000002421 cell wall Anatomy 0.000 title claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 239000011440 grout Substances 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 239000004568 cement Substances 0.000 claims abstract description 10
- 239000011083 cement mortar Substances 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 claims abstract description 10
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 7
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 210000002966 serum Anatomy 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 36
- 238000007569 slipcasting Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 13
- 239000011398 Portland cement Substances 0.000 claims description 10
- 238000005553 drilling Methods 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 8
- 230000010412 perfusion Effects 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 239000011505 plaster Substances 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 5
- 230000009977 dual effect Effects 0.000 claims description 3
- 239000003673 groundwater Substances 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims 1
- 235000019698 starch Nutrition 0.000 claims 1
- 239000008107 starch Substances 0.000 claims 1
- 239000008267 milk Substances 0.000 abstract description 2
- 210000004080 milk Anatomy 0.000 abstract description 2
- 235000013336 milk Nutrition 0.000 abstract description 2
- 125000006850 spacer group Chemical group 0.000 abstract 1
- 239000004567 concrete Substances 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
Abstract
The present invention proposes the construction method that limestone cave cell wall is closed in a kind of construction of diaphragm wall, and it includes step：（One）Solution cavity condition survey；（Two）Set grout hole：Single liquid grout hole is set at nearly continuous wall displacement both sides interval；Two-shot grouting hole is set in single liquid grout hole outside spacers；（Three）By two-shot grouting hole toward irrigating two fluid grouting in solution cavity：The two fluid grouting is cement：Water：Enclosed in waterglass mixed serum, solution cavity and cover continuous curtain wall area；（Four）By double single liquid grout holes toward irrigating single fluid grouting in solution cavity：The single fluid grouting is cement mortar, and area can be dug by forming diaphragm wall in diaphragm wall area；（Five）Note oar effect detection.The present invention is for the deeper solution cavity in position, it is only necessary to prospecting hole is set in diaphragm wall periphery, the potential safety hazard of landslide is not caused because arranging excessive exploration hole；The present invention only need to diaphragm wall location-appropriate expanded scope be in the milk, without whole solution cavity is evacuated and grout filling handle, with short time limit, difficulty is small, cost is low, effect is good the features such as.
Description
Technical field
The present invention relates to a kind of construction method of construction engineering technical field, and in particular to a kind of karst strata underground is continuous
The construction method of wall chase wall closing.
Background technology
General underground connects more than wall work progress mid-early stage using segmentation grooving, then inserts reinforcing bar the groove section dug is interior
Cage and concrete perfusion, during segmentation grooving, such as limestone cave then will first be filled processing to solution cavity, current public affairs
It is first for detection solution cavity to recognize preferable karst cave treatment process（The long wide * of * are high）Position, then takes the throwing block into solution cavity
The methods such as stone, backfill plain concrete, pressure slurry.This karst cave treatment method needs to arrange that solution cavity is verified in many geology detecting holes
Specific size, exploration hole disturbance solution cavity mostly occurs landslide potential safety hazard greatly, takes long, costly, long in time limit, difficulty of construction
Greatly, work efficiency is low, and the karst cave treatment deeper to depth brings very big difficulty.
The content of the invention
The purpose of the present invention is to propose in a kind of construction of diaphragm wall limestone cave cell wall close construction method, its
Only continuous wall displacement locally carry out cell wall closing, with easy construction, it is quick, efficient and cost-effective the characteristics of.
The purpose of the present invention can be realized by following technical solution：
The construction method that limestone cave cell wall is closed in a kind of construction of diaphragm wall, comprises the following steps.
Step one, solution cavity condition survey
Prospecting hole is set in diaphragm wall axis and periphery using boring method, the distributing position and size of limestone cave is determined, sentences
Groundwater environment and watery residing for disconnected solution cavity.
Step 2, sets grout hole
Single liquid grout hole is set by interval of 2~3m in nearly continuous wall displacement both sides, some single liquid grout holes surround single liquid grouting
Circle；Single liquid grouting circle outside sets two-shot grouting hole by interval of 2~3m, and some two-shot grouting holes surround two-shot grouting circle；It is double
Liquid grouting circle is separated by 2~2.5m with single liquid grouting circle.
Step 3, toward the interior perfusion two fluid grouting of solution cavity
Toward the two-shot grouting hole insertion Grouting Pipe of two-shot grouting circle, Grouting Pipe, which is located at solution cavity section, has distribution injected hole, Grouting Pipe
End blocking closure, injected hole adhesive plaster temporary plugging；
Two fluid grouting is irrigated toward solution cavity by Grouting Pipe with grouting pump, the two fluid grouting is cement：Water：Waterglass is with 10: 10
~15:2~4 quality uses 42.5 grades of portland cements or Portland cement, waterglass mould than mixed serum, cement
Number m=2.4~3.2（Concentration Be=30~40）, injection speed is：30~70L/min.
Grouting mode first notes odd number hole using note method is jumped, then notes even hole, can be formed after the completion of dual slurry slip casting together
Curtain wall, is enclosed in solution cavity and covers continuous curtain wall area, after the completion of slip casting, extracts Grouting Pipe, and biliquid is blocked with M7.5 cement mortar
Grout hole.
Step 4, toward the interior perfusion single fluid grouting of solution cavity
Toward single liquid grout hole insertion Grouting Pipe of list liquid grouting circle, Grouting Pipe, which is located at solution cavity section, has distribution injected hole, Grouting Pipe
End blocking closure, injected hole adhesive plaster temporary plugging；
Single fluid grouting is irrigated toward solution cavity by Grouting Pipe with grouting pump, the single fluid grouting is cement mortar, and cement uses 42.5
Level portland cement or Portland cement, the ratio of mud=1.0~1.5, injection speed is：30~70L/min.
Grouting mode first notes odd number hole using note method is jumped, then notes even hole, in diaphragm wall area after the completion of single slurry slip casting
Area can be dug by forming diaphragm wall, after the completion of slip casting, extract Grouting Pipe, and single liquid grout hole is blocked with M7.5 cement mortar.
Step 5, notes oar effect detection
Detection drilling is set by the 5% of hole number, 1 detection drilling should pass through test point no less than 3 marks, by detecting drilling to molten
Hole note oar effect enters rower and passes through detection, and SPT blow count is hit by 8<100mm is qualified.
Compared with prior art, the present invention is with substantial effect prominent as follows and significantly progressive：
1. the present invention is for the deeper solution cavity in position, it is only necessary to prospecting hole is set in diaphragm wall periphery, whole without detecting
The specific size of solution cavity, does not cause the potential safety hazard of landslide because arranging excessive exploration hole.
2. the present invention only needs to be in the milk in diaphragm wall location-appropriate expanded scope, without being evacuated to whole solution cavity
And grout filling processing, with short time limit, difficulty is small, cost is low, effect is good the features such as.
Brief description of the drawings
Fig. 1 CAVE DETECTIONs hole and injected hole horizontal layout schematic diagram.
Embodiment
With specific embodiment, the invention will be further described below：
With reference to Fig. 1, the construction method that limestone cave cell wall is closed in a kind of construction of diaphragm wall comprises the following steps.
Step one, solution cavity condition survey
Set prospecting hole 1 in the axis of diaphragm wall 10 and periphery using boring method, determine the distributing position of limestone cave with it is big
It is small, judge the groundwater environment and watery residing for solution cavity.
Step 2, sets grout hole
Single liquid grout hole 2 is set by interval of 2m in the nearly position both sides of diaphragm wall 10, some single liquid grout holes 2 surround single liquid grouting
Circle；Single liquid grouting circle outside sets two-shot grouting hole 3 by interval of 2m, and some two-shot grouting holes 3 surround two-shot grouting circle；Biliquid
Grouting circle is separated by 2m with single liquid grouting circle, as shown in Figure 1.
Step 3, toward the interior perfusion two fluid grouting of solution cavity
Toward the insertion of two-shot grouting hole 3 Grouting Pipe of two-shot grouting circle, Grouting Pipe, which is located at solution cavity section, has distribution injected hole, Grouting Pipe
End blocking closure, injected hole adhesive plaster temporary plugging.
Two fluid grouting is irrigated toward solution cavity by Grouting Pipe with grouting pump, the two fluid grouting is cement：Water：Waterglass with
10: 14:3 quality is than mixed serum, and cement is using 42.5 grades of Portland cements, modulus of water glass m=2.4~3.2
（Concentration Be=30~40）, injection speed is：30~70L/min.
Grouting pressure is controlled in 0.2~0.5MPa, and each hole slip casting time determines according to pressure size, if grouting pressure
0.3MPa is not reached always, then each grouting amount in each hole must not exceed 30m3, slip casting be not up to 0.3MPa require interval 24h after
Continue slip casting, so repeatedly untill slip casting reaches whole hole condition.If grouting pressure reaches 0.3MPa and on the rise,
Then continue slip casting, when grouting pressure reaches 0.5MPa final grouting pressure, continue more than slip casting 10min, then can whole hole.
Grouting mode first notes odd number hole using note method is jumped, then notes even hole, only just enters after the completion of each group of slip casting
The slip casting operation of next group of row, can form one of curtain wall, be enclosed in solution cavity and cover continuous curtain wall area after the completion of dual slurry slip casting, note
After the completion of slurry, Grouting Pipe is extracted, two-shot grouting hole 3 is blocked with M7.5 cement mortar.
Step 4, toward the interior perfusion single fluid grouting of solution cavity
Toward single liquid grout hole 2 insertion Grouting Pipe of list liquid grouting circle, Grouting Pipe, which is located at solution cavity section, has distribution injected hole, Grouting Pipe
End blocking closure, injected hole adhesive plaster temporary plugging.
Single fluid grouting is irrigated toward solution cavity by Grouting Pipe with grouting pump, the single fluid grouting is cement mortar, and cement is used
42.5 grades of Portland cements, the ratio of mud=1.0~1.5, injection speed is：30~70L/min：
Grouting pressure control method irrigates two fluid grouting with step 3.
Grouting mode first notes odd number hole using note method is jumped, then notes even hole, under being carried out again after the completion of each group of slip casting
One group of slip casting operation, area can be dug by forming diaphragm wall in diaphragm wall area after the completion of single slurry slip casting, after the completion of slip casting, extract slip casting
Pipe, single liquid grout hole is blocked with M7.5 cement mortar.
Step 5, notes oar effect detection
Detection drilling is set by the 5% of hole number, 1 detection drilling should pass through test point no less than 3 marks, by detecting drilling to molten
Hole note oar effect enters rower and passes through detection, and SPT blow count is hit by 8<100mm is qualified.
Claims (1)
1. the construction method that limestone cave cell wall is closed in a kind of construction of diaphragm wall, it is characterised in that including following step
Suddenly：
Step one, solution cavity condition survey
Prospecting hole is set in diaphragm wall axis and periphery using boring method, the distributing position and size of limestone cave is determined, sentences
Groundwater environment and watery residing for disconnected solution cavity；
Step 2, sets grout hole
Single liquid grout hole is set by interval of 2~3m in nearly continuous wall displacement both sides, some single liquid grout holes surround single liquid grouting
Circle；Single liquid grouting circle outside sets two-shot grouting hole by interval of 2~3m, and some two-shot grouting holes surround two-shot grouting circle；It is double
Liquid grouting circle is separated by 2~2.5m with single liquid grouting circle；
Step 3, toward the interior perfusion two fluid grouting of solution cavity
Toward the two-shot grouting hole insertion Grouting Pipe of two-shot grouting circle, Grouting Pipe, which is located at solution cavity section, has distribution injected hole, Grouting Pipe
End blocking closure, injected hole adhesive plaster temporary plugging；
Two fluid grouting is irrigated toward solution cavity by Grouting Pipe with grouting pump, the two fluid grouting is cement：Water：Waterglass is with 10: 10
~15:2~4 quality uses 42.5 grades of portland cements or Portland cement, waterglass mould than mixed serum, cement
Number m=2.4~3.2（Concentration Be=30~40）, injection speed is：30~70L/min；
Grouting mode first notes odd number hole using note method is jumped, then notes even hole, and one act can be formed after the completion of dual slurry slip casting
Wall, encloses in solution cavity and covers continuous curtain wall area, after the completion of slip casting, extracts Grouting Pipe, is filled with M7.5 cement mortar closure biliquid
Starch hole；
Step 4, toward the interior perfusion single fluid grouting of solution cavity
Toward single liquid grout hole insertion Grouting Pipe of list liquid grouting circle, Grouting Pipe, which is located at solution cavity section, has distribution injected hole, Grouting Pipe
End blocking closure, injected hole adhesive plaster temporary plugging；
Single fluid grouting is irrigated toward solution cavity by Grouting Pipe with grouting pump, the single fluid grouting is cement mortar, and cement uses 42.5
Level portland cement or Portland cement, the ratio of mud=1.0~1.5, injection speed is：30~70L/min；
Grouting mode first notes odd number hole using note method is jumped, then notes even hole, is formed after the completion of single slurry slip casting in diaphragm wall area
Diaphragm wall can dig area, after the completion of slip casting, extract Grouting Pipe, and single liquid grout hole is blocked with M7.5 cement mortar；
Step 5, notes oar effect detection
Detection drilling is set by the 5% of hole number, 1 detection drilling should pass through test point no less than 3 marks, by detecting drilling to molten
Hole note oar effect enters rower and passes through detection, and SPT blow count is hit by 8<100mm is qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602537.9A CN107227740A (en) | 2017-07-21 | 2017-07-21 | The construction method that limestone cave cell wall is closed in construction of diaphragm wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602537.9A CN107227740A (en) | 2017-07-21 | 2017-07-21 | The construction method that limestone cave cell wall is closed in construction of diaphragm wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107227740A true CN107227740A (en) | 2017-10-03 |
Family
ID=59956128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710602537.9A Pending CN107227740A (en) | 2017-07-21 | 2017-07-21 | The construction method that limestone cave cell wall is closed in construction of diaphragm wall |
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| CN (1) | CN107227740A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107938649A (en) * | 2017-11-29 | 2018-04-20 | 上海建工五建集团有限公司 | A kind of solution cavity foundation reinforcement method |
| CN112664193A (en) * | 2021-01-12 | 2021-04-16 | 北京天地华泰矿业管理股份有限公司 | Coal mining method under high-voltage transmission line |
| WO2021248872A1 (en) * | 2020-06-11 | 2021-12-16 | 中铁一局集团第二工程有限公司 | Method for determining safe thickness of side wall in karst area of foundation pit, and grouting device |
| CN115419047A (en) * | 2022-09-13 | 2022-12-02 | 中铁二十局集团南方工程有限公司 | Karst cave grouting process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437339A (en) * | 2013-07-29 | 2013-12-11 | 中铁十六局集团北京轨道交通工程建设有限公司 | Construction method for sealing karst cave near trench wall of underground continuous wall in karst stratum |
| US20160169435A1 (en) * | 2015-02-09 | 2016-06-16 | SAFEKEY Engineering Technology(Zhengzhou), Ltd. | Polymer composite grouting method for blocking leaking and sand inrush of underground pipelines |
-
2017
- 2017-07-21 CN CN201710602537.9A patent/CN107227740A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437339A (en) * | 2013-07-29 | 2013-12-11 | 中铁十六局集团北京轨道交通工程建设有限公司 | Construction method for sealing karst cave near trench wall of underground continuous wall in karst stratum |
| US20160169435A1 (en) * | 2015-02-09 | 2016-06-16 | SAFEKEY Engineering Technology(Zhengzhou), Ltd. | Polymer composite grouting method for blocking leaking and sand inrush of underground pipelines |
Non-Patent Citations (1)
| Title |
|---|
| 杜普;: "岩溶发育地区控制范围溶(土)洞处理施工技术研究", 建材与装饰, vol. 1, no. 20, pages 245 - 247 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107938649A (en) * | 2017-11-29 | 2018-04-20 | 上海建工五建集团有限公司 | A kind of solution cavity foundation reinforcement method |
| WO2021248872A1 (en) * | 2020-06-11 | 2021-12-16 | 中铁一局集团第二工程有限公司 | Method for determining safe thickness of side wall in karst area of foundation pit, and grouting device |
| CN112664193A (en) * | 2021-01-12 | 2021-04-16 | 北京天地华泰矿业管理股份有限公司 | Coal mining method under high-voltage transmission line |
| CN115419047A (en) * | 2022-09-13 | 2022-12-02 | 中铁二十局集团南方工程有限公司 | Karst cave grouting process |
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