CN107227744A - A kind of construction method of gushing water shear-zone leak stopping - Google Patents
A kind of construction method of gushing water shear-zone leak stopping Download PDFInfo
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- CN107227744A CN107227744A CN201710627492.0A CN201710627492A CN107227744A CN 107227744 A CN107227744 A CN 107227744A CN 201710627492 A CN201710627492 A CN 201710627492A CN 107227744 A CN107227744 A CN 107227744A
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- 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
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Abstract
The present invention discloses a kind of construction method of gushing water shear-zone leak stopping, comprises the following steps：Step 1, gushing water tomography passage is tentatively blocked；Step 2, to gushing water tomography passage irrigate expanding material；Step 3, judged according to the coarse sand amount and the particle diameter of coarse sand that are flowed out in gushing water tomography passage；Step 4, consolidation grouting；Step 4.1, accelerator are got the raw materials ready；Step 4.2, cement mortar are got the raw materials ready；Step 4.3, the perfusion ratio of mud are 1：1 cement mortar, it is 1 that accelerator is poured into the ratio of mud：In 1 cement mortar；Step 4.4, the perfusion ratio of mud are respectively 0.8：1 slurries are irrigated；Step 4.5, the perfusion ratio of mud are respectively 0.6：1 slurries are irrigated.Traditional " once irrigating " method is changed into " multiple fractionation perfusion " by the construction method of gushing water shear-zone leak stopping of the present invention, had both solved the leak stopping of special formation, engineering cost is reduced again.
Description
Technical field
The present invention relates to gushing water shear-zone leakage stopping technology field, and in particular to a kind of construction party of gushing water shear-zone leak stopping
Method.
Background technology
During rock and soil excavation, original earth formation is destroyed, has broken the power of water body in the soil body and stratum
Poised state is learned, when not protecting in time, the process for causing water and the soil body to pour in the excavation scope of operation together is referred to as gushing water, gushed
Mud.
During the Underground Engineering Excavations such as railway, highway, water conservancy, mine, due to disclosing part, the structure of Karst corridor
Get rich water band or when seepage flow punctures Tunnel wall and produces current, the phenomenon that mudflow is gushed out suddenly, water-carrying capacity be more than 0.1m3/s,
And have certain pressure and flow velocity, referred to as gushing water；When the materials such as the silt contained in prominent underground water are more than 50%, it is referred to as gushing
Mud.Gushing water, the essence for gushing mud disaster are that the aquifer structure, hydraulics and coffer mechanics poised state of country rock is sent out because of excavation
Life drastically changes, and is stored in the energy abrupt release in body of groundwater, and one migrated at high speed into tunnel with fluid form
Kind of power destruction phenomenon, underground water is difficult to control to and predicted because of it, outburst suddenly, harmfulness are big, is underground engineering construction process
In most needle-holding hand a problem.
The formation of karst declogging passage has two kinds of forms：One kind is water inrush channel caused by rockmass crack develops,
I.e. without obvious Geological Defects, another is the water inrush channel of Geological Defects formula, such as fault belt and karst
Deng, its water inrush channel germinating growth, until the evolutionary process ultimately formed is not only relevant with passage attribute itself, while and water
The external interference factors such as pressure, crustal stress and explosion are relevant, if not considering, External force interference influences, and the crack of rock mass develops by rock
The influence of itself Cracks Evolution of class material, crack is evolved into water inrush channel and shows as hydraulic fracture phenomenon under hydraulic pressure effect, real
It is that the lower rock mass intermittent joints of high water head effect extend in matter, and further open caused, hydraulic fracture after being mutually communicated
In terms of being initially applied to the exploitation of oil gas field and the measurement of crustal stress, large water conservancy hydroelectric engineering and communications and transportation in recent decades
In engineering construction, the disaster example of a large amount of hydraulic fracture induced water inrushs is occurred in that, the research heat as water inrush channel Forming Mechanism
Point.
At present, using grout injection or cement and waterglass mixed serum in the technical problem of processing gushing water leak stopping
Mode is handled.
For example, Chinese invention patent application number discloses a kind of for blocking height for 200610053050.1 patent document
The mixing provisions for grouting and its mixing method grouting process of underground water are pressed, cement grout and waterglass are utilized the invention provides one kind
Hybrid technology outside hole, for controlling the grout cures time, under high pressure ground water and unfavorable geological condition, it is ensured that cement grout is not
It can disperse, so as to reach the purpose to underground water grout sealing.The equipment of the present invention mainly includes distributor, static mixing
Device, check valve, homogenizer, high pressure slurry pump, high-pressure frequency-conversion pump, slurry storing tank, waterglass bucket and some related valves,
Pressure gauge, flowmeter etc..The present invention grouting process be：Drilling, make with install stop grouting plug, wait aperture stop grouting plug solidification,
Start to be in the milk, stop EXIT POINT.The present invention can be used for karst declogging stratum, Base of Dam of Reservoir (dike) piping, wire flowing water, water penetration
The leak stopping consolidation process such as concentration water burst, water spray in shear-zone, corrosion fissure.
There is following technical problem in grouting process of the prior art：
1st, cement mortar, cement and waterglass mixing slurry material because mobility it is big, in the case where shear-zone and crack are unclosed,
Diluted with flowing water, it is impossible to cementing, it is impossible in tomography and split interior deposition, directly take grout injection or cement and waterglass to mix
Slurry can not reach leak stopping purpose.
2nd, cement mortar plasmoid material by grouting equipment ability because being limited, and sand grains particle diameter is too small, and fine sand flows with slurries, sunk
Product is after tomography passage, after being lost in because of cementing material in current, it is impossible to consolidates in good time and carries out shear-zone by current,
Ponding thus can not be played.
There is drawbacks described above in grouting process of the prior art, it is difficult to adapt to current gushing water blocking construction development trend and
It is actually needed.
The content of the invention
It is an object of the present invention to a kind of construction method of gushing water shear-zone leak stopping be proposed, by traditional " once irrigating "
Method is changed into " multiple fractionation perfusion ", has both solved the leak stopping of special formation, and engineering cost is reduced again.
A kind of construction method of gushing water shear-zone leak stopping, comprises the following steps：
Step 1, gushing water tomography passage is tentatively blocked, coarse sand is precipitated along the upstream of gushing water tomography passage, particle diameter is
2-5mm coarse sand drifts about in the water and is deposited in gushing water tomography passage；
Step 2, to gushing water tomography passage irrigate expanding material, expanding material injection tomography 2-3 hour after produce expand,
Mutually extruded in gushing water tomography passage with the coarse sand that is deposited in tomography passage, form hole shape and metastable stratum
Structure；
Step 3, judged according to the coarse sand amount and the particle diameter of coarse sand that are flowed out in gushing water tomography passage, adjust the grain of coarse sand
Continue to irrigate behind footpath, be allowed to acquirement reduction and deposited the space filling that coarse sand is escaped and is rapidly completed in gushing water tomography passage
Effect；
Step 4, consolidation grouting, to what is reformulated in gushing water tomography passage by coarse sand, expanding material and original charges
The metastable earth formation of hole shape carries out consolidation grouting, according to the grouting pressure of consolidation grouting change adjustment grouting quantity, point
Level is in the milk to prevent the filler in gushing water tomography passage excessive and breakdown because of grouting energy；
Step 4.1, accelerator are got the raw materials ready, and prepare concentration 42-45Be, proportion 1.42-1.45, modulus 2.4-2.5 waterglass
Stoste；
Step 4.2, cement mortar are got the raw materials ready, and slurrying, upper tank diameter are carried out using the double-deck tank diameter with high-speed stirred function
For with slurrying material, after the completion of River Bank Stability, it is put into lower tank diameter storage and is conveyed into by grouting pump in hole and irrigate, realize system
Starch, be in the milk it is continual work continuously, it is respectively 1 to prepare the ratio of mud：1；0.8：1；0.6：1 cement mortar, is compared by most dilute grade slurry
Start grouting, become slurry step by step to most underflow liquid；
Step 4.3, when perfusion the ratio of mud be 1：The amount of 1 cement mortar is reached after 600L, and unit injection rate is more than 30L/min
When, it is 1 that accelerator is poured into the ratio of mud：Continue to irrigate in 1 cement mortar, after stirring, the addition of the accelerator is
The 3-5% of cement addition, it is each to add composition by mass；
Step 4.4, when perfusion the ratio of mud be 1：1 slurries add continuous pouring after accelerator and reach after 600L that it injects
Amount becomes slurry to the ratio of mud into 0.8 without being obviously reduced：1 slurries continue to irrigate 10min, when injection rate is more than 30L/min, by speed
It is 0.8 that the ratio of mud is poured into solidifying agent：Continue to irrigate in 1 cement mortar, after stirring, the addition of the accelerator adds for cement
Enter the 4-6% of amount, it is each to add composition by mass；
Step 4.5, when the ratio of mud be respectively 0.8：1 slurries add continuous pouring after accelerator and reach after 600L that it is noted
Enter amount without being obviously reduced, become slurry to the ratio of mud into 0.6：1 slurries continue to irrigate 10min, when injection rate is still greater than 30L/min
When, it is 0.6 that accelerator is poured into the ratio of mud：Continue to irrigate in 1 cement mortar, after stirring, until grouting reaches grouting knot
Beam standard, the addition of the accelerator is the 6-8% of cement addition, each to add composition by mass.
Further, in step 1 using grout curtain rig by curtain grout cleaning bottom of hole to gushing water tomography, from aperture
The uniform mode water filling into hole thrown sand, coordinate waterpower punching into hole, prevents throwing sand is too fast from blocking drilling, and make in input hole
Coarse sand hurtle down to gushing water tomography passage, coarse sand enter gushing water tomography passage after in tomography quickly through current take
Band and progressively deposited in gushing water tomography passage, so as to complete precipitation of the coarse sand in gushing water tomography passage.
Further, in step 2 using grout curtain rig by curtain grout cleaning bottom of hole to gushing water tomography, into hole
The mode water filling into hole delivered expanding material and coordinate waterpower to be punched, makes expanding material rapidly enter in gushing water tomography passage,
Carried by the water for intrastratal flow of breaking and moved towards direction in gushing water tomography passage and precipitated along journey, so as to complete the perfusion of expanding material.
Further, expanding material described in step 2 is soya bean.
Further, in step 3, delivered in aperture during coarse sand and expanding material, a hole depth measured per 10min,
Such as hole depth keeps constant, then continues the filling that feeds intake, and after occurring depositing coarse sand in drilling, coordinates sediment tube to enter using rig
The salvaging of row inner hole deposition shallow lake coarse sand, is completed after above-mentioned work, the water filling into hole, and water level in borehole decrease speed reduces, in combined hole
The volume of coarse sand and expanding material is poured into judging that situation is filled in gushing water tomography passage carries out anticipation, exclusion fills coarse sand or swollen
Swollen material blocks tomography with after bore entrance, taking packer permeability test inspection, and packer permeability test reaches design pressure water pressure, and unit pressure
Water-carrying capacity reaches stability criterion, or unit pressure water-carrying capacity stabilization, and packer permeability test pressure can maintain stationary value, you can judge in tomography
Stabilization is filled substantially, so that it is determined that next step can enter the filling stage.
Further, in step 4.3, grouting injection rate reaches 600 liters, and injection rate without being obviously reduced when, become slurry to dense
The slurries of one-level continue to irrigate.
Further, in step 4.3, when unit injection rate is more than 30L/min in filling process, can also current limliting be taken to fill
Slurry, intermittent grouting treat the step of solidifying grouting replaces pouring into accelerator.
Further, in step 4.5, grouting pressure reaches design pressure, and unit injection rate is less than after 0.2L/min, and spout slurry
Terminate perfusion after 60min.
Compared with prior art, superior effect of the invention is：
1st, the construction method of gushing water shear-zone leak stopping of the present invention, by being classified injection cement mortar, enables cement mortar
Enough it is attached in gushing water tomography passage.
2nd, the construction method of gushing water shear-zone leak stopping of the present invention, by gushing water tomography passage inject coarse sand and
Soya bean, makes the stratum that hole shape is improved as in gushing water tomography passage, is conducive to the attachment of cement mortar.
Embodiment
The specific embodiment of the invention is described in further detail with reference to embodiment.
Embodiment 1
A kind of construction method of gushing water shear-zone leak stopping, comprises the following steps：
Step 1, gushing water tomography passage is tentatively blocked, coarse sand is precipitated along the upstream of gushing water tomography passage, particle diameter is
2-5mm coarse sand drifts about in the water and is deposited in gushing water tomography passage；
Step 2, to gushing water tomography passage irrigate expanding material, expanding material injection tomography 2-3 hour after produce expand,
Mutually extruded in gushing water tomography passage with the coarse sand that is deposited in tomography passage, form hole shape and metastable stratum
Structure；
Step 3, judged according to the coarse sand amount and the particle diameter of coarse sand that are flowed out in gushing water tomography passage, adjust the grain of coarse sand
Continue to irrigate behind footpath, be allowed to acquirement reduction and deposited the space filling that coarse sand is escaped and is rapidly completed in gushing water tomography passage
Effect；
Step 4, consolidation grouting, to what is reformulated in gushing water tomography passage by coarse sand, expanding material and original charges
The metastable earth formation of hole shape carries out consolidation grouting, according to the grouting pressure of consolidation grouting change adjustment grouting quantity, point
Level is in the milk to prevent the filler in gushing water tomography passage excessive and breakdown because of grouting energy；
Step 4.1, accelerator are got the raw materials ready, and prepare concentration 42-45Be, proportion 1.42-1.45, modulus 2.4-2.5 waterglass
Stoste；
Step 4.2, cement mortar are got the raw materials ready, and slurrying, upper tank diameter are carried out using the double-deck tank diameter with high-speed stirred function
For with slurrying material, after the completion of River Bank Stability, it is put into lower tank diameter storage and is conveyed into by grouting pump in hole and irrigate, realize system
Starch, be in the milk it is continual work continuously, it is respectively 1 to prepare the ratio of mud：1；0.8：1；0.6：1 cement mortar, is compared by most dilute grade slurry
Start grouting, become slurry step by step to most underflow liquid；
Step 4.3, when perfusion the ratio of mud be 1：The amount of 1 cement mortar is reached after 600L, and unit injection rate is more than 30L/min
When, it is 1 that accelerator is poured into the ratio of mud：Continue to irrigate in 1 cement mortar, after stirring, the addition of the accelerator is
The 3-5% of cement addition, it is each to add composition by mass；
Step 4.4, when perfusion the ratio of mud be 1：1 slurries add continuous pouring after accelerator and reach after 600L that it injects
Amount becomes slurry to the ratio of mud into 0.8 without being obviously reduced：1 slurries continue to irrigate 10min, when injection rate is more than 30L/min, by speed
It is 0.8 that the ratio of mud is poured into solidifying agent：Continue to irrigate in 1 cement mortar, after stirring, the addition of the accelerator adds for cement
Enter the 4-6% of amount, it is each to add composition by mass；
Step 4.5, when the ratio of mud be respectively 0.8：1 slurries add continuous pouring after accelerator and reach after 600L that it is noted
Enter amount without being obviously reduced, become slurry to the ratio of mud into 0.6：1 slurries continue to irrigate 10min, when injection rate is still greater than 30L/min
When, it is 0.6 that accelerator is poured into the ratio of mud：Continue to irrigate in 1 cement mortar, after stirring, until grouting reaches grouting knot
Beam standard, the addition of the accelerator is the 6-8% of cement addition, each to add composition by mass.
Wherein, the injection rate described in step 4.4 refers to that 600L adds the slurries of accelerator in grouting without being obviously reduced
During, unit injection rate during beginning is compared with having filled unit injection rate when these slurry materials are completed, and has been filled 600L and has been mixed
Plus the slurry material grouting unit injection rate of accelerator is without bright not less than 90% of grouting unit injection rate when filling accelerator
It is aobvious to reduce.Such as 1:1 slurry material is not plus during accelerator, and unit injection rate is 20l/min, plus accelerator, and is shown when having filled 600L
Show unit injection rate also greater than 18lm/min, so that it may the one-level that thickens (0.8:1) slurry is in the milk.
Using grout curtain rig by curtain grout cleaning bottom of hole to gushing water tomography in step 1, from aperture into hole
Even throwing sand, coordinates mode water filling into hole of waterpower punching, prevents that throwing too fast block of sand drills, and make the coarse sand in input hole fast
Dropped down onto under speed in gushing water tomography passage, coarse sand enter after gushing water tomography passage in tomography quickly through current carry and prominent
Progressively deposited in water tomography passage, so as to complete precipitation of the coarse sand in gushing water tomography passage.
Expansion is delivered into hole by curtain grout cleaning bottom of hole to gushing water tomography using grout curtain rig in step 2
Material and the mode water filling into hole for coordinating waterpower to be punched, make expanding material rapidly enter in gushing water tomography passage, in tomography
The water of flowing carries and moves towards direction in gushing water tomography passage and precipitated along journey, so as to complete the perfusion of expanding material.
Expanding material described in step 2 is soya bean.
In step 3, delivered in aperture during coarse sand and expanding material, a hole depth is measured per 10min, such as hole depth is kept
It is constant, then continue the filling that feeds intake, after occurring deposition coarse sand in drilling, coordinate sediment tube to carry out inner hole deposition shallow lake using rig
The salvaging of coarse sand, is completed after above-mentioned work, the water filling into hole, and water level in borehole decrease speed reduces, poured into combined hole coarse sand and
The volume of expanding material is to judging that situation is filled in gushing water tomography passage carries out anticipation, and exclusion fills coarse sand or expanding material is blocked
Tomography is with after bore entrance, taking packer permeability test inspection, and packer permeability test reaches design pressure water pressure, and unit pressure water-carrying capacity reaches
Stability criterion, or unit pressure water-carrying capacity are stable, and packer permeability test pressure can maintain stationary value, you can judge to fill substantially in tomography
It is stable, so that it is determined that next step can enter the filling stage.
Wherein, the pressure criteria that grout curtain packer permeability test is used is general in the following several ways：1st, this section of grouting pressure
During less than 1.0MPa, pressure water pressure uses 0.3MPa；2nd, when this section of grouting pressure is more than 1.0MPa, pressure water pressure is used
1.0MPa；3rd, the check criteria of grout curtain can be performed by above-mentioned situation, and such as check criteria is relatively tight, it is necessary to judge that curtain is formed
Afterwards, when the filling matter movement in crack or tomography, the packer permeability test mode in " five stages of three pressure " is also taken,
The mode " 0.3-0.6-1.0-0.6-0.3 " that i.e. pressing water pressure diminishes again from small to large is carried out continuously packer permeability test.
Show herein, when such as packer permeability test is checked, when carrying out packer permeability test with 0.3MPa pressure, one is surveyed per 5min
Secondary unit water injection rate, continuous 4 readings, such as last unit water injection rate reading is compared with previous unit water injection rate, and it is missed
Difference is not less than 10%, that is, thinks that unit pressure water-carrying capacity has reached stability criterion (explanation codes and standards).Shear-zone is big because of scope,
The pore communication filled after sandfilling tomography is good, and general unit water injection rate is still very big, and packer permeability test pressure can not be raised to design
The minimum value of packer permeability test pressure, as long as the pressure gauge in packer permeability test installed in aperture can show that pressure, illustrates disconnected
Certain obstruction is formd in layer, accordingly, it is possible to judge that its filling has reached requirement.If packer permeability test pressure can be reached
Standard, illustrate the very closely knit of filling in shear-zone, effect is more preferable.Generally during grout curtain packer permeability test, there is a lot
The phenomenon of pressure also can not occur in stratum location when pressing water, remind cementing operations personnel to select denseer slurries as filling is opened and compare
Level, different regions and designing institute can according to circumstances make corresponding requirements.
Injection rate of being in the milk in step 4.3 reaches 600 liters, and injection rate without being obviously reduced when, become slurry to the slurries of dense one-level
Continue to irrigate.
In step 4.5, grouting pressure reaches design pressure, and unit injection rate is less than after 0.2L/min, is tied after the slurry 60min that spouts
Beam is irrigated.
Embodiment 2
In step 4.3, when unit injection rate is more than 30L/min in filling process, takes current limliting grouting, intermittent grouting or treat
The step of solidifying grouting replaces pouring into accelerator.In addition, it is in the same manner as in Example 1.
The present invention is not limited to above-mentioned embodiment, in the case of without departing substantially from the substantive content of the present invention, this area skill
Any deformation that art personnel are contemplated that, improvement, replace and each fall within protection scope of the present invention.
Claims (8)
1. a kind of construction method of gushing water shear-zone leak stopping, it is characterised in that comprise the following steps：
Step 1, gushing water tomography passage is tentatively blocked, precipitate coarse sand along the upstream of gushing water tomography passage, particle diameter is 2-5mm
Coarse sand drift about in the water and be deposited in gushing water tomography passage；
Step 2, to gushing water tomography passage irrigate expanding material, expanding material injection tomography 2-3 hour after produce expansion, with sink
Coarse sand of the product in tomography passage is mutually extruded in gushing water tomography passage, forms hole shape and metastable earth formation；
Step 3, judged according to the coarse sand amount and the particle diameter of coarse sand that are flowed out in gushing water tomography passage, after the particle diameter for adjusting coarse sand
Continue to irrigate, be allowed to obtain the effect for reducing and having deposited the space filling that coarse sand is escaped and is rapidly completed in gushing water tomography passage；
Step 4, consolidation grouting, to the hole reformulated in gushing water tomography passage by coarse sand, expanding material and original charges
The metastable earth formation of shape carries out consolidation grouting, and according to the grouting pressure of consolidation grouting change adjustment grouting quantity, classification is filled
Starch to prevent the filler in gushing water tomography passage excessive and breakdown because of grouting energy；
Step 4.1, accelerator are got the raw materials ready, and prepare concentration 42-45Be, proportion 1.42-1.45, modulus 2.4-2.5 waterglass stoste；
Step 4.2, cement mortar are got the raw materials ready, and slurrying is carried out using the double-deck tank diameter with high-speed stirred function, and upper tank diameter is used for
With slurrying material, after the completion of River Bank Stability, it is put into lower tank diameter storage and is conveyed into by grouting pump in hole and irrigate, realize slurrying, filling
Slurry is continual to work continuously, and it is respectively 1 to prepare the ratio of mud：1；0.8：1；0.6：1 cement mortar, is filled by most dilute grade slurry than
Slurry, becomes slurry to most underflow liquid step by step；
Step 4.3, when perfusion the ratio of mud be 1：The amount of 1 cement mortar reached after 600L, and unit injection rate is when being more than 30L/min,
It is 1 that accelerator is poured into the ratio of mud：Continue to irrigate in 1 cement mortar, after stirring, the addition of the accelerator is cement
The 3-5% of addition, it is each to add composition by mass；
Step 4.4, when perfusion the ratio of mud be 1：1 slurries add continuous pouring after accelerator and reached after 600L, its injection rate without
It is obviously reduced, becomes slurry to the ratio of mud into 0.8：1 slurries continue to irrigate 10min, when injection rate is more than 30L/min, by accelerator
It is 0.8 to pour into the ratio of mud：Continue to irrigate in 1 cement mortar, after stirring, the addition of the accelerator is cement addition
4-6%, it is each to add composition by mass；
Step 4.5, when the ratio of mud be respectively 0.8：1 slurries add continuous pouring after accelerator and reached after 600L, its injection rate
Without being obviously reduced, become slurry to the ratio of mud into 0.6：1 slurries continue to irrigate 10min, when injection rate is still greater than 30L/min, will
It is 0.6 that accelerator, which pours into the ratio of mud,：Continue to irrigate in 1 cement mortar, after stirring, until grouting reaches that grouting terminates mark
Standard, the addition of the accelerator is the 6-8% of cement addition, each to add composition by mass.
2. the construction method of gushing water shear-zone leak stopping according to claim 1, it is characterised in that curtain is used in step 1
Drilled grout hole equipment throws sand, the side of cooperation waterpower punching by curtain grout cleaning bottom of hole to gushing water tomography from aperture is uniform into hole
Formula water filling into hole, prevents that throwing too fast block of sand drills, and the coarse sand in input hole is hurtled down to gushing water tomography passage,
Coarse sand enter gushing water tomography passage after in tomography quickly through current carry and progressively deposited in gushing water tomography passage, from
And complete precipitation of the coarse sand in gushing water tomography passage.
3. the construction method of gushing water shear-zone leak stopping according to claim 1, it is characterised in that curtain is used in step 2
Drilled grout hole equipment in curtain grout cleaning bottom of hole to gushing water tomography, expanding material will be delivered into hole and coordinates the mode of waterpower punching
The water filling into hole, makes expanding material rapidly enter in gushing water tomography passage, is carried and in gushing water tomography by the water for intrastratal flow of breaking
Passage moves towards direction and precipitated along journey, so as to complete the perfusion of expanding material.
4. the construction method of gushing water shear-zone leak stopping according to claim 1, it is characterised in that in step 3, throws in aperture
Put during coarse sand and expanding material, a hole depth is measured per 10min, such as hole depth keeps constant, then continues the filling that feeds intake, work as brill
Occur in hole after deposition coarse sand, coordinate sediment tube to carry out the salvaging of inner hole deposition shallow lake coarse sand using rig, complete above-mentioned work
Afterwards, the water filling into hole, water level in borehole decrease speed reduces, and the volume of coarse sand and expanding material is poured into judging gushing water in combined hole
Filling situation carries out anticipation in tomography passage, and exclusion fills coarse sand or expanding material blocks tomography with after bore entrance, taking pressure
Water test checks that packer permeability test reaches design pressure water pressure, and unit pressure water-carrying capacity reaches stability criterion, or unit pressure water-carrying capacity
Stable, packer permeability test pressure can maintain stationary value, you can judge to fill stabilization in tomography substantially, so that it is determined that next step can be entered
Enter the filling stage.
5. the construction method of gushing water shear-zone leak stopping according to claim 1, it is characterised in that be in the milk note in step 4.3
Enter amount and reach 600 liters, and injection rate without being obviously reduced when, become slurry to the slurries of dense one-level and continue to irrigate.
6. the construction method of gushing water shear-zone leak stopping according to claim 1, it is characterised in that in step 4.3, be in the milk
When unit injection rate is more than 30L/min in journey, takes current limliting grouting, intermittent grouting or treat that solidifying grouting replaces pouring into the step of accelerator
Suddenly.
7. the construction method of gushing water shear-zone leak stopping according to claim 1, it is characterised in that in step 4.5, grouting pressure
Power reaches design pressure, and unit injection rate is less than after 0.2L/min, and perfusion is terminated after the slurry 60min that spouts.
8. the construction method of gushing water shear-zone leak stopping according to claim 1, it is characterised in that expanded described in step 2
Material is soya bean.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488249A (en) * | 2018-10-31 | 2019-03-19 | 中国石油集团川庆钻探工程有限公司 | Prevent leak-stopping cement mortar by stratum or the diluted method of wellbore fluids |
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| CN115110559A (en) * | 2022-07-22 | 2022-09-27 | 四川共拓岩土科技股份有限公司 | Deep permeability reducing and shallow consolidation method for water-rich fractured geology |
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