CN204356786U - A uncovered heavy consolidation grouting structure for surge shaft excavation - Google Patents
A uncovered heavy consolidation grouting structure for surge shaft excavation Download PDFInfo
- Publication number
- CN204356786U CN204356786U CN201420824228.8U CN201420824228U CN204356786U CN 204356786 U CN204356786 U CN 204356786U CN 201420824228 U CN201420824228 U CN 201420824228U CN 204356786 U CN204356786 U CN 204356786U
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- CN
- China
- Prior art keywords
- surge shaft
- layer
- consolidation grouting
- surge
- grouting hole
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- 238000009412 basement excavation Methods 0.000 title claims abstract description 20
- 238000007596 consolidation process Methods 0.000 title claims abstract description 20
- 238000010276 construction Methods 0.000 abstract description 19
- 239000011435 rock Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000011440 grout Substances 0.000 abstract 2
- 238000009435 building construction Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a uncovered heavy consolidation grouting structure for surge shaft excavation, including surge shaft and a plurality of layers of consolidation grouting layer around arranging the surge shaft, every layer of consolidation grouting layer is arranged the uncovered heavy consolidation grouting hole around the surge shaft by a plurality of levels and is constituteed, and every layer of uncovered heavy consolidation grouting hole evenly arranges along surge shaft circumferencial direction, each layer uncovered heavy consolidation grouting hole around the surge shaft is parallel to each other, uncovered heavy consolidation grouting hole perpendicular to surge shaft surface. The utility model discloses a to the surge shaft top excavated rock mass around the pit shaft carry out uncovered heavy concretion grout, guarantee to dig in-process country rock stable under the surge shaft, the later stage can detect grouting effect according to means such as geophysical prospecting detection, and the reduction part has the cover to heavily concretize the grout engineering volume, reduces the engineering investment for the construction progress has better social and economic benefits, can be in the extensive popularization and application of drainage building construction technical field.
Description
Technical field
The utility model belongs to the water diverting structure technical field in Hydraulic and Hydro-Power Engineering, specifically relates to a kind of nongravity capping concretion grouting structure for surge shaft excavation.
Background technology
In Hydraulic and Hydro-Power Engineering is built, surge shaft is a kind of common and very important hydraulic structure, owing to being subject to the restriction of topographic and geologic and project general arrangement, sometimes surge shaft position is in IV, V class surrounding rock geologic province, even sometimes surge shaft top is in covering layer scope, causes great difficulty to the excavation of surge shaft.In conventional process, the mode strengthening first phase excavation supporting is normally adopted to guarantee excavation construction safety, as adopted bracing members or combined bolting and shotcrete, but the problem still borehole wall distortion often occurring in digging process, collapse, increase construction investment, affect the duration.It is comparatively large to there is construction investment in traditional processing mode, and construction risk is high, and the duration is difficult to ensure simultaneously.
Utility model content
The purpose of this utility model is under unfavorable geological condition, and surge shaft excavation difficulty is large, the problem that construction investment is high, provides a kind of nongravity capping concretion grouting structure for surge shaft excavation.Thus dig adjoining rock stability in process under guarantee surge shaft, minimizing part has the heavy consolidation grouting engineering quantity of lid, reduces construction investment, accelerating construction progress.
The utility model is achieved by following technical solution.
A kind of nongravity capping concretion grouting structure for surge shaft excavation, comprise surge shaft and arrange some layers of consolidation grouting layer around surge shaft, every layer of consolidation grouting layer is made up of the nongravity capping concretion grouting hole of some horizontal arrangement around surge shaft, and every layer of nongravity capping concretion grouting hole is evenly arranged along surge shaft circumferencial direction.
Each layer nongravity capping concretion grouting hole around described surge shaft is parallel to each other.
Described nongravity capping concretion grouting hole is perpendicular to surge shaft external surface.
The interlamellar spacing in described nongravity capping concretion grouting hole is 2 ~ 3m.
The annular spacing in described nongravity capping concretion grouting hole is 1 ~ 3m.
The degree of depth in described nongravity capping concretion grouting hole is 6 ~ 12m.
The beneficial effects of the utility model are:
Compared with prior art, the utility model carries out nongravity capping concretion grouting by having excavated pit shaft surrounding rock body to surge shaft top, adjoining rock stability in process is dug under ensureing surge shaft, later stage can detect grouting effect according to means such as physical prospecting detections, minimizing part has the heavy consolidation grouting engineering quantity of lid, reduces construction investment, accelerating construction progress, there is good Social benefit and economic benefit, can in water diverting structure technical field of construction wide popularization and application.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A direction view of Fig. 1;
Fig. 3 is perspective view of the present utility model.
In figure: 1-surge shaft, 2-nongravity capping concretion grouting hole.
Detailed description of the invention
The technical solution of the utility model is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of nongravity capping concretion grouting structure for surge shaft excavation described in the utility model, comprise surge shaft 1 and arrange some layers of consolidation grouting layer around surge shaft 1, every layer of consolidation grouting layer is made up of the nongravity capping concretion grouting hole 2 of some horizontal arrangement around surge shaft 1, and every layer of nongravity capping concretion grouting hole 2 is evenly arranged along surge shaft 1 circumferencial direction.Adopt the technical program, when constructing, first pit shaft surrounding rock body has been excavated to surge shaft top and carried out nongravity capping concretion grouting reinforcing, adjoining rock stability in process is dug under ensureing surge shaft, later stage can detect grouting effect according to means such as physical prospecting detections, minimizing part has the heavy consolidation grouting engineering quantity of lid, reduces construction investment, accelerating construction progress.
Each layer nongravity capping concretion grouting hole 2 around described surge shaft 1 is parallel to each other.
Described nongravity capping concretion grouting hole 2 is perpendicular to surge shaft 1 external surface.
The interlamellar spacing in described nongravity capping concretion grouting hole 2 is 2 ~ 3m.
The annular spacing in described nongravity capping concretion grouting hole 2 is 1 ~ 3m.
The degree of depth in described nongravity capping concretion grouting hole 2 is 6 ~ 12m.
In practice of construction, the hole depth in described nongravity capping concretion grouting hole 2, row and reject and should meet design requirement, can be adjusted accordingly according to engineering concrete condition.After consolidation filling intensity reaches design code value, the excavation construction of surge shaft 1 can be carried out.
As shown in Figure 1 and Figure 2, the utility model mainly carries out in accordance with the following steps:
(1) accurately locating the position of surge shaft 1, complete surge shaft 1 levelling of the land, set up scaffold, is that the heavy consolidation of surge shaft 1 uncovered fills with the ready condition of construction;
(2) arrange nongravity capping concretion grouting hole 2, the aperture in nongravity capping concretion grouting hole 2, row, spacing are determined according to the size of surge shaft 1 and geological condition;
(3) surge shaft 1 excavation construction, after nongravity capping concretion grouting completes, dig construction safety in process under ensure that surge shaft, the later stage can detect grouting effect according to means such as physical prospecting detections, minimizing part has the heavy consolidation grouting engineering quantity of lid, starts surge shaft excavation construction.
Claims (6)
1. the nongravity capping concretion grouting structure for surge shaft excavation, it is characterized in that: comprise surge shaft (1) and arrange surge shaft (1) some layers of consolidation grouting layer around, every layer of consolidation grouting layer is made up of the nongravity capping concretion grouting hole (2) of some horizontal arrangement around surge shaft (1), and every layer of nongravity capping concretion grouting hole (2) is evenly arranged along surge shaft (1) circumferencial direction.
2. a kind of nongravity capping concretion grouting structure for surge shaft excavation according to claim 1, is characterized in that: described surge shaft (1) each layer nongravity capping concretion grouting hole (2) is around parallel to each other.
3. a kind of nongravity capping concretion grouting structure for surge shaft excavation according to claim 1, is characterized in that: described nongravity capping concretion grouting hole (2) is perpendicular to surge shaft (1) external surface.
4. a kind of nongravity capping concretion grouting structure for surge shaft excavation according to claim 1, is characterized in that: the interlamellar spacing of described nongravity capping concretion grouting hole (2) is 2 ~ 3m.
5. a kind of nongravity capping concretion grouting structure for surge shaft excavation according to claim 1, is characterized in that: the annular spacing of described nongravity capping concretion grouting hole (2) is 1 ~ 3m.
6. a kind of nongravity capping concretion grouting structure for surge shaft excavation according to claim 1, is characterized in that: the degree of depth of described nongravity capping concretion grouting hole (2) is 6 ~ 12m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420824228.8U CN204356786U (en) | 2014-12-22 | 2014-12-22 | A uncovered heavy consolidation grouting structure for surge shaft excavation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420824228.8U CN204356786U (en) | 2014-12-22 | 2014-12-22 | A uncovered heavy consolidation grouting structure for surge shaft excavation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204356786U true CN204356786U (en) | 2015-05-27 |
Family
ID=53258265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420824228.8U Active CN204356786U (en) | 2014-12-22 | 2014-12-22 | A uncovered heavy consolidation grouting structure for surge shaft excavation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204356786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917409A (en) * | 2017-03-27 | 2017-07-04 | 中国水利水电第四工程局有限公司 | A kind of rock lid weight consolidation grouting construction method |
-
2014
- 2014-12-22 CN CN201420824228.8U patent/CN204356786U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917409A (en) * | 2017-03-27 | 2017-07-04 | 中国水利水电第四工程局有限公司 | A kind of rock lid weight consolidation grouting construction method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |