CN105735200B - The water-stop slurry grouting method and device that slot blocks are checked for sealing - Google Patents
The water-stop slurry grouting method and device that slot blocks are checked for sealing Download PDFInfo
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- CN105735200B CN105735200B CN201610259402.2A CN201610259402A CN105735200B CN 105735200 B CN105735200 B CN 105735200B CN 201610259402 A CN201610259402 A CN 201610259402A CN 105735200 B CN105735200 B CN 105735200B
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- slot
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a kind of water-stop slurry grouting methods that slot closure is checked for sealing, include the following steps: 1) water-filling concora crush；2) it is in the milk；3) synchronous drain: after stock inlet is opened, top overfall is tight-lipped with unlatching；4) grouting is completed: overfall mouth keeps stability of flow in drainage procedure, and observation overfall mouth delivery flow is carried out after interleaving agent discharge, continues that first drain and foam is discharged, can close overfall mouth after confirmation water-stop slurry outflow, carry out closing slurry；5) sealing of hole.The present invention also provides devices used in the water-stop slurry grouting method for checking slot closure for sealing.Interleaving agent is used in filling process, and trough inner water body and slurries can be made not to contact substantially each other and do not mixed；Slot internal pressure power keeps being slightly above external water pressure, outside body of water can be made not can enter, and water body and slurries is avoided to mix, and water-stop slurry is not easy to solidify when there is long period traveling in aquaporin at a distance.
Description
Technical field
The present invention relates to hydraulic and hydroelectric engineering concrete dam fields, check stopping for slot closure for sealing in particular to a kind of
Aqueous slurry grouting method and device.
Background technique
Water blocking antiseepage function across the inbuilt water-stopping system of seam mainly by undertaking at concrete dam upstream face monolith parting, only
Water system includes twice sealing piece, sets sealing therebetween and checks slot.Sealing checks slot, is generally stopped near gallery using horizontal partitioning
Moisture section, each section of upper and lower side pass through pipeline and are connected to gallery.There is observation sealing leakage scenarios and row under normal operation
Water depressurization；Construction and turn(a)round, by pressing water to slot inner sealing, can check sealing with the presence or absence of seepage defect and leakage
Position；When there is larger leakage, by the way that Polyurethane LW sealing material is perfused into slot, it can reach and block leak paths reparation system
The purpose for antiseepage function of uniting.
In the construction time and with the position for draining maintenance condition, to the processing of dam transverse joint sealing leakage be also an option that from
Upstream face takes many kinds of measures such as junction of the edges of two sheets of paper grouting, sealing pointing waterstop sealing glue, surface mount sealing cover plate；And water blocking is run
Afterwards, seepage treatment following for reservoir level is generallyd use and is in the milk out of gallery to avoid underwater construction.
When using above traditional grouting technique, since Polyurethane sealing material has water solubility, slurries meet water reaction
Fast speed is suitable for the quick water blockoff of pure pressure type.It is easy solidification having when the long period advances in aquaporin at a distance, causes to lead to
Road blocking grouting is interrupted.Therefore, it researches and develops one kind and is not easy to solidify when having water-stop slurry long period traveling in aquaporin at a distance
Water-stop slurry grouting method seem necessary.
Summary of the invention
Problem to be solved by this invention seeks to provide a kind of sealing for checking slot closure for sealing operated conveniently
Slurries grouting method is not easy to solidify having at a distance when the long period advances in aquaporin.The present invention also provides for only
Water checks device used in the water-stop slurry grouting method of slot closure, and structure is simple, linking is compact.
In order to solve the above technical problems, a kind of water-stop slurry grouting for checking that slot is blocked for sealing according to the present invention
Method includes the following steps:
1) water-filling concora crush: closing stock inlet, and overfall mouth is closed after overfall mouth is discharged naturally after top, makes the in-pipe flow that is in the milk
Stationary state is switched to by turbulent condition, it is after pressure stabilisation, the pressure value of stock inlet and overfall mouth is recorded respectively；
2) it is in the milk: opening stock inlet valve, start feed liquor to be slightly above the pressure of stock inlet, advanced interleaving agent, then into only
Aqueous slurry, slow adherence pressure and stock inlet valve opening to feed speed keep stablizing after reaching setting value；
3) synchronous drain: after stock inlet valve opening, top overfall mouth valve follows unlatching closely；
4) grouting is completed: overfall mouth keeps stability of flow in drainage procedure, and observation overfall mouth is carried out after interleaving agent discharge
Delivery flow continues that first drain and foam is discharged, can close overfall mouth valve after confirmation water-stop slurry outflow, carry out closing slurry；
5) sealing of hole: after closing slurry 48h, opening arrangement is removed, cleaning bottom of hole 50cm fills and leads up tamping using pre contract mortar.
Preferably, in step 2), the interleaving agent is selected from one of carbon tetrachloride, carbon disulfide, methylene chloride, chloroform
Or it is several, water-stop slurry is soluble polyurethane.
Further, every meter of sealing checks that the length control of filling interleaving agent in slot is 0.08~0.15 meter, preferably 0.1
Rice.In this way, suitable interleaving agent can either be effectively isolated slurries and water body, and unlikely influenced because interleaving agent loading time is too long
Grouting overall time.
Further, in step 3), the ratio of overfall mouth draining flow and stock inlet into slurry flow during controlled grouting
For 0.75~0.95:1, preferably 0.9:1.It is in the milk in this way, not only can guarantee with the smooth progress of normal speed, but also can make to check in slot
There is certain pressure to prevent library water from penetrating into.
It is a kind of to check device used in the water-stop slurry grouting method of slot closure, including grout pipe, grouting for sealing
Pipe include interlude, be arranged in interlude upper end into starching section, the overfall section of interlude lower end being arranged in, into slurry section and overfall section
It is each perpendicular to interlude, slurry section end is provided with stock inlet, the first graduating valve, grouting pump, first flowmeter and first pressure
Table, overfall section end are provided with overfall mouth, the second graduating valve, second pressure gauge and second flowmeter, be provided in grout pipe every
From agent section and water-stop slurry section, interleaving agent section is located at the top of water-stop slurry section.
Preferably, the internal diameter of stock inlet is 0.06~0.1 meter, preferably 0.08 meter；The internal diameter of overfall mouth is 0.06~0.1
Rice, preferably 0.08 meter；The internal diameter of interlude is 0.15~0.3 meter, preferably 0.2 meter.
Advantages of the present invention is mainly reflected in following several respects:
First, using interleaving agent in filling process, trough inner water body and slurries can be made not to contact substantially each other and do not mixed,
It avoids slurries from meeting the blocking of water rapid curing to check slot and interrupt grouting；
Second, slot internal pressure power keeps being slightly above external water pressure, outside body of water can be made not can enter, avoid water body and slurries
Mixing.
After tested, the primary success of present invention grouting, overfall mouth pulp is smooth, has reached expected design effect.Eliminate dam
Body seepage defect improves dam service condition and internal environment, and to improve dam transverse joint water-stopping system tectonic type, shape
At inspection adaptable therewith, observation, processing matching technology, new exploration and development have been made, it is horizontal to preventing and reducing dam
The generation and harm for stitching sealing leakage problems have important theory and application value.
Detailed description of the invention
Structural schematic diagram when Fig. 1 is utility model works.
Wherein, grout pipe 1；Stock inlet 2；First graduating valve 3；Grouting pump 4；First pressure gauge 5；Overfall mouth 6；Second restraining
Valve 7；Second pressure gauge 8；Second flowmeter 9；First flowmeter 10；Interleaving agent section 11；Water-stop slurry section 12；Into slurry section 13；In
Between section 14；Overfall section 15.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but the embodiment should not manage
Solution is limitation of the present invention.
A kind of water-stop slurry grouting method checking that slot is blocked for sealing, includes the following steps:
1) water-filling concora crush: closing stock inlet, and overfall mouth is closed after overfall mouth is discharged naturally after top, checks sealing in slot
Water flow switchs to stationary state by turbulent condition, after pressure stabilisation, records the pressure value of stock inlet and overfall mouth respectively；
2) it is in the milk: opening stock inlet valve, start feed liquor to be slightly above the pressure of stock inlet, start into interleaving agent, then
Into water-stop slurry, slow adherence pressure and stock inlet valve opening to feed speed reach holding stabilization after setting value；Interleaving agent
For the mixture of carbon tetrachloride and carbon disulfide, water-stop slurry is soluble polyurethane；
3) synchronous drain: after stock inlet valve opening, top overfall mouth valve follows unlatching closely；Overfall during controlled grouting
The ratio of mouth draining flow and stock inlet into slurry flow is 0.75~0.95:1, preferably 0.9:1；
4) grouting is completed: overfall mouth keeps stability of flow in drainage procedure, and observation overfall mouth is carried out after interleaving agent discharge
Delivery flow continues that first drain and foam is discharged, can close overfall mouth valve after confirmation water-stop slurry outflow, carry out closing slurry；
5) sealing of hole: after closing slurry 48h, opening arrangement is removed, cleaning bottom of hole 50cm fills and leads up tamping using pre contract mortar.
A kind of sealing checks the water-stop slurry provisions for grouting that slot blocks, including grout pipe 1, grout pipe 1 include interlude 14,
Be arranged in 14 upper end of interlude into starching section 13, the overfall section 15 of 14 lower end of interlude being arranged in, into slurry section 13 and overfall section 15
It is each perpendicular to interlude 14, slurry 13 end of section is provided with stock inlet 2, the first graduating valve 3, grouting pump 4,10 and of first flowmeter
First pressure gauge 5,15 end of overfall section are provided with overfall mouth 6, the second graduating valve 7, second pressure gauge 8 and second flowmeter 9, fill
It is provided with interleaving agent section 11 and water-stop slurry section 12 in slurry pipe 1, interleaving agent section 11 is located at the top of water-stop slurry section 12.
The length control of every meter of 1 inner release agent section 11 of grout pipe is 0.1 meter.
The internal diameter of stock inlet 2 is 0.08 meter.
The internal diameter of overfall mouth 6 is 0.08 meter.
The internal diameter of interlude 14 is 0.2 meter.
When the invention works, the course of work is as follows:
1) water-filling concora crush: closing stock inlet 2, and overfall mouth 6 is closed after overfall mouth 6 is discharged naturally, makes water flow in grout pipe 1
Stationary state is switched to by turbulent condition, it is after pressure stabilisation, the pressure value of stock inlet 2 and overfall mouth 6 is recorded respectively, respectively
P1、P2；
2) it is in the milk: opening the first graduating valve 3, P is slightly above with pressure1Start feed liquor, advanced interleaving agent, then is starched into sealing
Liquid, slow adherence pressure and 3 aperture of the first graduating valve keep stablizing after reaching setting value to feed speed；Interleaving agent is four chlorinations
The mixture of carbon and carbon disulfide, water-stop slurry are soluble polyurethane；
3) synchronous drain: after the first graduating valve 3 is opened, the second graduating valve of top 7 follows unlatching closely；Observe first flowmeter 10
With second flowmeter 9, the ratio of 6 draining flow of overfall mouth and stock inlet 2 into slurry flow is 0.9:1 during controlled grouting；
4) grouting is completed: observation second flowmeter 9 guarantees that overfall mouth 6 keeps stability of flow, interleaving agent in drainage procedure
After 11 discharge of section, the delivery flow of overfall mouth 6 is examined, continues that first drain and foam is discharged, confirmation water-stop slurry section 12 flows
The second graduating valve 7 can be closed after out, carry out closing slurry；
5) sealing of hole: after closing slurry 48h, opening arrangement is removed, cleaning bottom of hole 50cm fills and leads up tamping using pre contract mortar.
The length of grout pipe 1 is 30 meters, and the length control of interleaving agent section 11 is 3 meters.
The content being not described in detail in this specification belongs to the prior art well known to those skilled in the art.
Claims (9)
1. a kind of water-stop slurry grouting method for checking that slot is blocked for sealing, which comprises the steps of:
1) water-filling concora crush: closing stock inlet, and overfall mouth is closed after overfall mouth is discharged naturally after top, and the in-pipe flow that makes to be in the milk is by disorderly
Stream mode switchs to stationary state, after pressure stabilisation, records the pressure value of stock inlet and overfall mouth respectively；
2) it is in the milk: opening stock inlet valve, start feed liquor, advanced interleaving agent to be slightly above the pressure of stock inlet, then starch into sealing
Liquid, slow adherence pressure and stock inlet valve opening to feed speed keep stablizing after reaching setting value；
3) synchronous drain: after stock inlet valve opening, top overfall mouth valve follows unlatching closely；
4) grouting is completed: overfall mouth keeps stability of flow in drainage procedure, and observation overfall mouth discharge is carried out after interleaving agent discharge
Flow continues that first drain and foam is discharged, can close overfall mouth valve after confirmation water-stop slurry outflow, carry out closing slurry；
5) sealing of hole: after closing slurry 48h, opening arrangement is removed, cleaning bottom of hole 50cm fills and leads up tamping using pre contract mortar；
The water-stop slurry grouting method is for there is sealing in aquaporin to be in the milk.
2. the water-stop slurry grouting method according to claim 1 for checking that slot is blocked for sealing, which is characterized in that described
In step 2), the interleaving agent is selected from one or more of carbon tetrachloride, carbon disulfide, methylene chloride, chloroform, water-stop slurry
For soluble polyurethane.
3. the water-stop slurry grouting method according to claim 1 or 2 for checking that slot is blocked for sealing, which is characterized in that
Every meter of sealing checks that the length control of filling interleaving agent in slot is 0.08~0.15 meter.
4. the water-stop slurry grouting method according to claim 3 for checking that slot is blocked for sealing, which is characterized in that every meter
Sealing checks that the length control of filling interleaving agent in slot is 0.1 meter.
5. the water-stop slurry grouting method according to claim 3 for checking that slot is blocked for sealing, which is characterized in that described
In step 3), the ratio of overfall mouth draining flow and stock inlet into slurry flow is 0.75~0.95:1 during controlled grouting.
6. the water-stop slurry grouting method according to claim 5 for checking that slot is blocked for sealing, which is characterized in that described
In step 3), the ratio of overfall mouth draining flow and stock inlet into slurry flow is 0.9:1 during controlled grouting.
7. a kind of check device used in the water-stop slurry grouting method of slot closure for sealing, which is characterized in that including filling
Slurry pipe (1), the grout pipe (1) include interlude (14), setting in the interlude (14) upper end into slurry section (13), setting
Overfall section (15) in the interlude (14) lower end, it is described to be each perpendicular to the interlude into slurry section (13) and overfall section (15)
(14), described that slurry section (13) end is provided with stock inlet (2), the first graduating valve (3), grouting pump (4), first flowmeter (10)
With first pressure gauge (5), overfall section (15) end is provided with overfall mouth (6), the second graduating valve (7), second pressure gauge (8)
With second flowmeter (9), the grout pipe (1) is interior to be provided with interleaving agent section (11) and water-stop slurry section (12), the interleaving agent
Section (11) is located at the top of the water-stop slurry section (12).
8. according to claim 7 check device used in the water-stop slurry grouting method of slot closure for sealing,
It is characterized in that, the internal diameter of the stock inlet (2) is 0.06~0.1 meter, and the internal diameter of the overfall mouth (6) is 0.06~0.1 meter, institute
The internal diameter for stating interlude (14) is 0.15~0.3 meter.
9. according to claim 8 check device used in the water-stop slurry grouting method of slot closure for sealing,
It is characterized in that, the internal diameter of the stock inlet (2) is 0.08 meter, and the internal diameter of the overfall mouth (6) is 0.08 meter, the interlude
(14) internal diameter is 0.2 meter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610259402.2A CN105735200B (en) | 2016-04-25 | 2016-04-25 | The water-stop slurry grouting method and device that slot blocks are checked for sealing |
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| CN201610259402.2A CN105735200B (en) | 2016-04-25 | 2016-04-25 | The water-stop slurry grouting method and device that slot blocks are checked for sealing |
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| CN105735200B true CN105735200B (en) | 2019-04-30 |
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| CN109235391A (en) * | 2018-11-01 | 2019-01-18 | 中国电建集团成都勘测设计研究院有限公司 | The surface grouting structure of diversion outlet closuring concrete |
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2016
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