CN106498960A - A kind of harness the river method of stifled row with reference to delamination pour slurry - Google Patents
A kind of harness the river method of stifled row with reference to delamination pour slurry Download PDFInfo
- Publication number
- CN106498960A CN106498960A CN201611058417.9A CN201611058417A CN106498960A CN 106498960 A CN106498960 A CN 106498960A CN 201611058417 A CN201611058417 A CN 201611058417A CN 106498960 A CN106498960 A CN 106498960A
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- China
- Prior art keywords
- slip casting
- grouting
- station
- stifled
- thickness
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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
- E02D19/10—Restraining of underground water by lowering level of ground water
-
- 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
- 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
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
Abstract
The present invention relates to a kind of stifled row comprises the steps with reference to the method for harnessing the river of delamination pour slurry：1) scope in station agent structure grouting and reinforcing area, is determined according to construction Preliminary design and on-site actual situations；2) thickness of station base plate and side wall grouting stabilization zone, is determined by Theoretical Calculation and engineering experience；3), before grouting and reinforcing is carried out, slip casting region division is carried out to the station bottom surface of rectangle according to construction way, and core wall is set；4), the arrangement drilled according to the slip casting region for dividing, and carry out slip casting；5), while slip casting, drainage well is arranged according to slip casting subregion on underground space base plate plane, draining is carried out simultaneously with grouting for water blocking；6) after the completion of, treating slip casting, by arranging multiple water-level observation points, the stifled effect for arranging method of harnessing the river with reference to subregion slip casting is judged with this.The present invention is processed to subsoil water using the theory of " row in blocking up outward " " subregion slip casting ", improves the efficiency of high water head tunneling Underground Space Excavation operation.
Description
【Technical field】
The method the present invention relates to one kind is harnessed the river, and in particular to a kind of stifled row of high water head tunneling Underground Space Excavation combines and divides
The method of harnessing the river of layer slip casting, belongs to Tunnel Engineering technical field.
【Background technology】
The anhydrous construction method of the tunneling underground space more ripe at present mainly has well-point dewatering method, the method that intercepts water, curtain+draining
The three major types such as method.Well-point dewatering method process is simple, into well expense is low and pattern of well adjustment flexibly, but cone of depression during big drawdown
Greatly, surrounding is affected；The method that intercepts water safe reliable, hold one's breath, displacement is little, effect on environment is little, but cost is high, construction speed
Slowly；Curtain+drainage cloth hole flexibly, low cost, water percolating capacity little, but closure is poor, and pore-creating is more difficult.
In high water head tunneling Underground Space Excavation operation, generally existing is without implementing dewatering well position and rich water ovum gravel erratic boulder
The stratum method of intercepting water performs the problems such as difficulty, cost are high, and conventional curtain water stop is difficult to carry out.
Therefore, it is to solve above-mentioned technical problem, it is necessory to provide a kind of stifled row's harnessing the river with reference to delamination pour slurry of innovation
Method, to overcome the defect of the prior art.
【Content of the invention】
It is an object of the invention to provide a kind of stifled row of high water head tunneling Underground Space Excavation harnesses the river with reference to subregion slip casting
Method, is processed to subsoil water using " row in blocking up outward ", the theory of " subregion slip casting ", so that existing tunneling underground is greatly improved
The deficiency of the anhydrous construction method in space, improves the efficiency of high water head tunneling Underground Space Excavation operation.
For achieving the above object, the technical scheme taken of the present invention is：A kind of harness the river method of stifled row with reference to delamination pour slurry,
Which comprises the technical steps that：
1) scope in station agent structure grouting and reinforcing area, is determined according to construction Preliminary design and on-site actual situations；
2) thickness of station base plate and side wall grouting stabilization zone, is determined by Theoretical Calculation and engineering experience；
3), before grouting and reinforcing is carried out, slip casting region division is carried out to the station bottom surface of rectangle according to construction way, and
Core wall is set；
4), the arrangement drilled according to the slip casting region for dividing, and carry out slip casting；
5), while slip casting, a series of drainage well, row are arranged according to slip casting subregion on underground space base plate plane
Water is carried out simultaneously with grouting for water blocking；
6) after the completion of, treating slip casting, by arranging multiple water-level observation points, to judge that stifled row harnesses the river with reference to subregion slip casting with this
The effect of method.
The present invention stifled row with reference to the method for harnessing the river of delamination pour slurry be further：The step 2) in station base plate and side wall
The thickness in grouting and reinforcing area is checked by impervious checking computations, Anti-floating design and base plate bending resistance, and it is next to combine live practical engineering experience
Determine；Under the conditions of high water head, station side wall grouting stabilization zone top thickness be 2～3m, bottom be 3～4m, station base plate note
The thickness of slurry stabilization zone is 5m or so, while the trapezoidal thickness in side wall grouting stabilization zone increases 1m per 5m.
The present invention stifled row with reference to the method for harnessing the river of delamination pour slurry be further：The step 3) in station bottom surface slip casting
Region division is determined by section length during middle floor slab construction；According to engineering practical experience, typically by the station bottom surface of rectangle
According to the grouting and reinforcing area that the 30m length deciles of are in strip；Meanwhile, core wall curtain, water proof are set between slip casting area
The thickness of wall hanging curtain is generally 3m.
The present invention stifled row with reference to the method for harnessing the river of delamination pour slurry be further：The step 4) in arrange on the base plate of station
Be vertical drilling, drill pitch of holes 800mm, trestle column 800mm, using Flos Mume arrange, below drilling depth to station base plate
Distance for floor grouting stabilization zone thickness；Meanwhile, station side wall grouting drilling dilling angle and side wall formed 9 °, 18 °,
28 °, 36 ° of angle, drilling length are obtained by the thickness and dilling angle in station side wall grouting area.
The present invention stifled row with reference to the method for harnessing the river of delamination pour slurry be further：The step 5) in each slip casting subregion
Four mouthfuls of drainage wells of interior general setting, in the bottom configuration Water pumping installation of drainage well, draining is carried out simultaneously with grouting for water blocking.
The present invention stifled row with reference to the method for harnessing the river of delamination pour slurry be also：The step 6) in water-level observation point position cloth
Put after decile near bar shaped slip casting area minor face midpoint, each slip casting area arranges two.
Compared with prior art, the present invention has the advantages that：
(1) the determination method of station base plate and side wall grouting stabilization zone thickness, is given, slip casting can be effectively played and be added
The waterproof action of Gu Qu, while the side wall grouting stabilization zone thickness for having gradient also saves injecting paste material.
(2), using subregion slip casting, the sealing mode of outer stifled interior row, work efficiency had both been greatly improved, had only been increased again
Water effect and can implement in the tunneling underground space for cannot apply dewatering well, method workable.
(3), this method employ arrange water-level observation point mode, can real-time detection grouting consolidation effect, be follow-up
The development of engineering provides guidance.
(4), the present invention carries out the engineering of Underground Space Excavation using subsurface excavation method in the case of being applied to high water head.Meanwhile, this
Invention can overcome the shortcomings of the anhydrous construction method of the existing conventional tunneling underground space, using subregion slip casting, the side of outer stifled interior row
Formula is processed to subsoil water, is a kind of good method for carrying out the anhydrous construction of the rich water ovum gravel erratic boulder stratum underground space.
【Description of the drawings】
Fig. 1 is that subway station base plate and side wall grouting stabilization zone arrange schematic diagram.
Fig. 2 is subway station subregion slip casting plane graph.
Icon explanation
1. the underground space；2. dewatering well；3. abutment wall；4. underground space side wall grouting stabilization zone；5. underground space base plate is noted
Slurry stabilization zone；6. waterline；7. water-bearing layer；8. core wall.
【Specific embodiment】
Below in conjunction with the accompanying drawings 1,2 and specific embodiment the invention will be further described.
The present invention relates to a kind of stifled row of high water head tunneling Underground Space Excavation harnesses the river method with reference to subregion slip casting, main control
The content of project processed and construction procedure is as follows：
Step one, according to the model that construction Preliminary design and on-site actual situations determine station agent structure grouting and reinforcing area
Enclose.
In this step, the size in grouting and reinforcing area is substantially determined according to construction Preliminary design drawing.Both car had been passed through
Base areas of standing determine the scope of floor grouting stabilization zone, the scope for determining station side wall grouting stabilization zone by height of water level.
Step 2, the thickness that station base plate and side wall grouting stabilization zone are determined by Theoretical Calculation and engineering experience.
In this step, checked, and combine live practical engineering experience to come according to impervious design, Anti-floating design and base plate bending resistance
Determine the thickness in grouting and reinforcing area.
In this step, impervious design can the variant of Darcy's law as the following formula carry out：
In formula：L is seepage flow approach, and generally seepage flow approach is identical with the thickness of grouting and reinforcing body；
Q is the average water percolating capacity empirical value of every square metre of area of stratum deep basal pit, takes maximum after grouting and reinforcing；
Δ h is head difference, typically takes the above height of water level h of base plate.
In this step, Anti-floating design can be carried out as the following formula：
γ H=k γwh
In formula：Thickness of the H for excavation of foundation pit grouting behind shaft or drift lining body；
γ is injecting cement paste severe, generally takes 2.3；
γ w are the severe of water, take 1.0；
It is higher than injecting cement paste bottom plate heights that h is water level, generally presses the above height of water level of base plate plus slip casting body thickness
Calculate.
Finally give:Under the conditions of high water head, station side wall grouting stabilization zone top thickness be 2～3m, bottom be 3～
4m, the thickness of station floor grouting stabilization zone is 5m or so, while the trapezoidal thickness in side wall grouting stabilization zone increases 1m per 5m.Ground
The thickness range of ferrum station base plate and side wall grouting stabilization zone is as shown in Figure 1.
Step 3, before grouting and reinforcing is carried out, carries out slip casting region according to construction way and draws to the station bottom surface of rectangle
Point, and core wall is set.
In this step, the slip casting region division of station bottom surface is mainly determined by section length during middle floor slab construction.Root
According to engineering practical experience, typically by the station bottom surface of rectangle according to 30m mono- the grouting and reinforcing area that is in strip of length decile.With
When, core wall curtain is set between slip casting area, the thickness of core wall curtain is generally 3m.Subway station subregion slip casting plane graph
As shown in Figure 2.
Step 4, the arrangement drilled according to the slip casting region for dividing simultaneously carry out slip casting.
In this step, on the base plate of station, arrangement is vertical drilling, and drill pitch of holes 800mm, and trestle column 800mm is adopted
Blossom type arranges that the distance below drilling depth to station base plate is the thickness of floor grouting stabilization zone.Meanwhile, station side wall is noted
Slurry drilling dilling angle and side wall formed 9 °, 18 °, 28 °, 36 ° of angle, creep into length by station side wall grouting area thickness and
Dilling angle is obtained.
Step 5, while slip casting, arranges a series of drainage according to slip casting subregion on underground space base plate plane
Well, draining are carried out simultaneously with grouting for water blocking.
In this step, four mouthfuls of drainage wells are typically set, draining in the bottom configuration of drainage well in each slip casting subregion
Pump, draining are carried out simultaneously with grouting for water blocking.The deployment scenarios of drainage well are as shown in Figure 2.
With this, step 6, after the completion for the treatment of slip casting, by arranging multiple water-level observation points, to judge that stifled row combines subregion slip casting
The effect of method of harnessing the river.
In this step, the location arrangements of water-level observation point after decile near bar shaped slip casting area minor face midpoint, ordinary circumstance
Under, each slip casting area arranges two.
Above specific embodiment is only the preferred embodiment of this creation, not in order to limit this creation, all in this wound
Any modification, equivalent substitution and improvements for being done etc. within the spirit of work and principle, should be included in this creation protection domain it
Interior.
Claims (6)
1. harness the river method of a kind of stifled row with reference to delamination pour slurry, it is characterised in that：Comprise the technical steps that：
1) scope in station agent structure grouting and reinforcing area, is determined according to construction Preliminary design and on-site actual situations；
2) thickness of station base plate and side wall grouting stabilization zone, is determined by Theoretical Calculation and engineering experience；
3), before grouting and reinforcing is carried out, slip casting region division is carried out to the station bottom surface of rectangle according to construction way, and is arranged
Core wall；
4), the arrangement drilled according to the slip casting region for dividing, and carry out slip casting；
5), while slip casting, a series of drainage well is arranged according to slip casting subregion on underground space base plate plane, draining with
Grouting for water blocking is carried out simultaneously；
6) after the completion of, treating slip casting, by arranging multiple water-level observation points, to judge that stifled row harnesses the river method with reference to subregion slip casting with this
Effect.
2. harness the river method of the row as claimed in claim 1 stifled with reference to delamination pour slurry, it is characterised in that：The step 2) in station
The thickness of base plate and side wall grouting stabilization zone is checked by impervious checking computations, Anti-floating design and base plate bending resistance, and it is actual to combine scene
Engineering experience is determining；Under the conditions of high water head, station side wall grouting stabilization zone top thickness is 2～3m, and bottom is 3～4m,
The thickness of station floor grouting stabilization zone is 5m or so, while the trapezoidal thickness in side wall grouting stabilization zone increases 1m per 5m.
3. harness the river method of the row as claimed in claim 1 stifled with reference to delamination pour slurry, it is characterised in that：The step 3) in station
The slip casting region division of bottom surface is determined by section length during middle floor slab construction；According to engineering practical experience, typically by rectangle
Station bottom surface according to 30m mono- the grouting and reinforcing area that is in strip of length decile；Meanwhile, core wall is set between slip casting area
Curtain, the thickness of core wall curtain are generally 3m.
4. harness the river method of the row as claimed in claim 1 stifled with reference to delamination pour slurry, it is characterised in that：The step 4) in station
On base plate, arrangement is vertical drilling, and drill pitch of holes 800mm, using Flos Mume, trestle column 800mm arranges that drilling depth is to car
Thickness of the distance that stands below base plate for floor grouting stabilization zone；Meanwhile, station side wall grouting drilling dilling angle and side wall shape
Into 9 °, 18 °, 28 °, 36 ° of angle, drilling length is obtained by the thickness and dilling angle in station side wall grouting area.
5. harness the river method of the row as claimed in claim 1 stifled with reference to delamination pour slurry, it is characterised in that：The step 5) in each
Four mouthfuls of drainage wells are typically set in individual slip casting subregion, in the bottom configuration Water pumping installation of drainage well, draining and grouting for water blocking
Carry out simultaneously.
6. harness the river method of the row as claimed in claim 1 stifled with reference to delamination pour slurry, it is characterised in that：The step 6) in water level
After decile near bar shaped slip casting area minor face midpoint, each slip casting area arranges two to the location arrangements of observation station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611058417.9A CN106498960A (en) | 2016-11-27 | 2016-11-27 | A kind of harness the river method of stifled row with reference to delamination pour slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611058417.9A CN106498960A (en) | 2016-11-27 | 2016-11-27 | A kind of harness the river method of stifled row with reference to delamination pour slurry |
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| CN106498960A true CN106498960A (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611058417.9A Pending CN106498960A (en) | 2016-11-27 | 2016-11-27 | A kind of harness the river method of stifled row with reference to delamination pour slurry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021248424A1 (en) * | 2020-06-09 | 2021-12-16 | 广西路桥工程集团有限公司 | Induced grouting method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001020291A (en) * | 1999-07-12 | 2001-01-23 | Ohbayashi Corp | Groundwater draining method |
| CN204252148U (en) * | 2014-12-01 | 2015-04-08 | 中铁隆工程集团有限公司 | High artesian thick sand-pebble layer deep foundation ditch slip casting back cover structure |
-
2016
- 2016-11-27 CN CN201611058417.9A patent/CN106498960A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001020291A (en) * | 1999-07-12 | 2001-01-23 | Ohbayashi Corp | Groundwater draining method |
| CN204252148U (en) * | 2014-12-01 | 2015-04-08 | 中铁隆工程集团有限公司 | High artesian thick sand-pebble layer deep foundation ditch slip casting back cover structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021248424A1 (en) * | 2020-06-09 | 2021-12-16 | 广西路桥工程集团有限公司 | Induced grouting method |
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Application publication date: 20170315 |
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