CN108590665A - The grouting method of light section diversion tunnel long distance construction - Google Patents
The grouting method of light section diversion tunnel long distance construction Download PDFInfo
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- CN108590665A CN108590665A CN201810310605.9A CN201810310605A CN108590665A CN 108590665 A CN108590665 A CN 108590665A CN 201810310605 A CN201810310605 A CN 201810310605A CN 108590665 A CN108590665 A CN 108590665A
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- 238000010276 construction Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000005553 drilling Methods 0.000 claims abstract description 142
- 238000007569 slipcasting Methods 0.000 claims abstract description 69
- 238000012360 testing method Methods 0.000 claims abstract description 19
- 239000004575 stone Substances 0.000 claims abstract description 18
- 239000013589 supplement Substances 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 54
- 238000009412 basement excavation Methods 0.000 claims description 17
- 238000004140 cleaning Methods 0.000 claims description 15
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 238000002474 experimental method Methods 0.000 claims description 7
- 230000002000 scavenging effect Effects 0.000 claims description 6
- 241001074085 Scophthalmus aquosus Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 19
- 239000011435 rock Substances 0.000 description 24
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 210000004911 serous fluid Anatomy 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/005—Monitoring or checking of cementation quality or level
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Quality & Reliability (AREA)
- Geophysics (AREA)
- Soil Sciences (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of grouting method of light section diversion tunnel long distance construction, the grouting method includes：Determine drilling hole position；Drilling operation is carried out according to drilling hole position, and determines the bore state of drilling hole position；Grouting operation is carried out to drilling hole position, and obtains the slip casting state of drilling hole position during grouting operation；Grouting operation is adjusted according to slip casting state, and in the case where slip casting state meets preset condition, terminate grouting operation and obtains injected hole；Injected hole is examined to carry out supplement grouting operation to injected hole in the case where injected hole does not meet test stone, until injected hole meets test stone.By carrying out grouting operation according to the bore state of drilling hole position, and the slip casting effect of grouting operation is compensated and adjusted, to ensure that the slip casting effect under complex environment in light section diversion tunnel long distance construction meets construction requirement, it ensure that construction safety, improve construction quality.
Description
Technical field
The invention belongs to technical field of tunnel construction, and in particular to a kind of slip casting of light section diversion tunnel long distance construction
Method.
Background technology
During constructing tunnel, the safety of constructing tunnel, reduction constructing tunnel are to geology item in order to further increase
The influence of part, the generation for reducing the accidents such as water burst sandblasting in tunnel and the personal safety etc. of guarantee construction personnel, it is therefore desirable to
Apply the structures such as various protection structures, such as preliminary bracing, lining cutting, supporting steelframe in tunnel.
Compared with increasing tunnel construction demand, about light section diversion tunnel long distance construction under complex environment
Research but relatively lags behind.Currently, the research about deep-lying tunnel grouting technology for crack rock mass is still in the exploratory stage, grind accordingly
It is not strong to study carefully achievement systematicness, applicability, there is apparent deficiency in terms of theoretical research and engineering practice, exist on actual requirement
Certain gap.
Effective diffusion length of the slurries in stratum, decide the arrangement of injected hole, the quality of Grouting engineering and slip casting at
This control, thus be the important parameter for needing to accurately control in mortar depositing construction.In recent decades, domestic and foreign scholars note infiltration
Slurry processes have made extensive and intensive studies, and have developed a series of slip casting penetration theories, as mug(unit of measure) theoretical (spherical diffusion is theoretical),
Theoretical, the single tablet crack grouting saturated model of cylindricality diffusion theory, Karol, Baker formula, G Lombad formula etc..But it is total
It is the research of grouting theory compares with the fast-developing sharp contrast of injecting paste material, grouting process, grouting equipment for body
Relatively slowly.
In fact, slurries often move in a variety of forms in the earth formation, and these forms of motion with landing surface variation,
The variation of the property and pressure of slurries and mutually convert or and deposit, but be with certain liquid form always under certain condition
Main, since the research at present in this field is less, it is long that existing method cannot be satisfied the light section diversion tunnel under complex environment
Application in distance construction.
Invention content
In order to overcome slip casting side is can refer in light section diversion tunnel long distance construction under complex environment in the prior art
Method is less, the technical issues of cannot be satisfied existing construction application, the embodiment of the present invention provide a kind of light section diversion tunnel length away from
Grouting method from construction ensure that the slip casting effect under complex environment in light section diversion tunnel long distance construction meets and apply
Work requirement, ensure that construction safety, improves construction quality.
To achieve the above object, the present invention provides a kind of grouting method of light section diversion tunnel long distance construction, institutes
Stating grouting method includes：Determine drilling hole position；Drilling operation is carried out according to the drilling hole position, and determines the drilling hole position
Bore state；Grouting operation is carried out to the drilling hole position, and obtains the slip casting of the drilling hole position during grouting operation
State；Grouting operation is adjusted according to the slip casting state, and in the case where the slip casting state meets preset condition, terminates institute
It states grouting operation and obtains injected hole；The injected hole is examined, in the case where the injected hole does not meet test stone, to institute
It states injected hole and carries out supplement grouting operation, until the injected hole meets test stone.
Preferably, the determining drilling hole position includes：It is axial according to the excavation direction of tunnel, with the excavation of the tunnel
Contour line is boundary, radially arranges the drilling hole position, wherein the drilling hole position is arranged with default spacing.
Preferably, described that drilling operation is carried out to the drilling hole position, and determine the bore state of the drilling hole position, packet
It includes：Drilling operation is carried out to the drilling hole position according to sequence from top to bottom, from outside to inside；Judge in boring procedure whether
It encounters interburden layer or water burst accident occurs；In the case of encountering interburden layer in the boring procedure or water burst accident occurs, really
The fixed drilling hole position is in abnormal bore state, and interburden layer is encountered in the boring procedure or the feelings of water burst accident occur
Under condition, determine that the drilling hole position is in normal drill state.
Preferably, the grouting method further includes：The drilling hole position is cleaned before grouting operation starts.
Preferably, described that the drilling hole position is cleaned, including：The mode that discharges water to die-off is risen sharply using pressure to institute
Drilling hole position is stated to be cleaned；Judge whether the water after cleaning is in clean state, and the water after the cleaning is in cleaning
In the case of state, continue to clean the drilling hole position 10 minutes；And/or judge whether the total scavenging period cleaned is less than
30 minutes, and in the case where total scavenging period is less than 30 minutes, continue to clean the drilling hole position.
Preferably, described that grouting operation is carried out to the drilling hole position based on the bore state, and in grouting operation mistake
The slip casting state that the drilling hole position is obtained in journey includes：In the case where the drilling hole position is in normal drill state, wait for
Grouting operation is carried out to the drilling hole position after the completion of drilling；In the case where the drilling hole position is in abnormal bore state,
Grouting operation is carried out to the drilling hole position by the way of often boring one section of depth note, one section of depth, the depth to drill each time is small
In drilling hole position total depth；Obtain during the grouting operation drilling hole position into the slurry speed and drilling hole
Grouting pressure in position is as the slip casting state；It is described that grouting operation is adjusted according to the slip casting state, including：It is described into
Slurry speed be more than preset into slurry value and it is described into slurry pressure be less than preset pressure value in the case of, adjust the slurry of the grouting operation
Liquid concentration and match ratio, and carry out grouting operation by the way of small pump amount low-pressure.
Preferably, described in the case where the slip casting state meets preset condition, terminate the grouting operation and obtains
Injected hole, including：It presets into slurry velocity amplitude into whether slurry speed is less than described in judgement, and whether is reached into slurry pressure described in judgement
To preset pressure threshold value；It is described into slurry speed be less than it is described preset into slurry velocity amplitude and it is described into slurry pressure reach described pre-
If in the case of pressure threshold, obtaining the slip casting total amount that the grouting operation is consumed；Reach default threshold in the slip casting total amount
In the case of value, determines that the slip casting state meets preset condition, terminate the grouting operation and obtain injected hole.
Preferably, described in the case where the injected hole does not meet test stone, supplement note is carried out to the injected hole
Slurry operation, until the injected hole meets test stone, including：Pressure water experiment is carried out to the injected hole；Obtain the slip casting
Water absorption of the hole under the pressure water experiment；In the case where the water absorption is more than default water suction threshold value, the slip casting is judged
Hole does not meet test stone.
Preferably, the grouting method further includes：The size of excavation face based on the tunnel, in the excavation of the tunnel
At least one drain hole hole position is arranged in face, and carries out drilling operation to drain hole hole position after completing the drilling operation,
To generate drain hole.
Preferably, the grouting method further includes：Obtain the charge for remittance amount of the tunnel；Based on the charge for remittance amount according to default
Scheme of drawing water carries out detaching operation to the water collected in the tunnel.
The technical solution provided through the invention, the present invention at least have the following technical effect that：
By carrying out grouting operation according to the bore state of drilling hole position, each drilling hole for carrying out grouting operation ensure that
Position all meets construction requirement, and the slip casting effect of grouting operation is compensated and adjusted, to ensure that tunnel tunnel face
The slurries of front injection can be effectively fused together with the country rock around tunnel, and play sufficient firm wall, isolation
The effects that dark water, to ensure that the slip casting effect under complex environment in light section diversion tunnel long distance construction meets construction
It is required that ensure that construction safety, construction quality is improved.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Fig. 1 is the specific implementation stream of the grouting method of light section diversion tunnel long distance construction provided in an embodiment of the present invention
Cheng Tu；
Fig. 2 be light section diversion tunnel long distance construction provided in an embodiment of the present invention grouting method in arrange drilling hole
The schematic diagram of position；
Fig. 3 be light section diversion tunnel long distance construction provided in an embodiment of the present invention grouting method in abnormal drilling
The slip casting depth schematic diagram of the drilling hole position of state.
Specific implementation mode
In order to overcome slip casting side is can refer in light section diversion tunnel long distance construction under complex environment in the prior art
Method is less, the technical issues of cannot be satisfied existing construction application, the embodiment of the present invention provide a kind of light section diversion tunnel length away from
Grouting method from construction by carrying out grouting operation according to the bore state of drilling hole position, and imitates the slip casting of grouting operation
Fruit compensates and adjusts, to ensure that the slip casting effect in the light section diversion tunnel long distance construction under complex environment
Meet construction requirement, ensure that construction safety, improves construction quality.
The specific implementation mode of the embodiment of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this
The described specific implementation mode in place is merely to illustrate and explain the present invention embodiment, is not intended to restrict the invention embodiment.
Term " system " and " network " in the embodiment of the present invention can be used interchangeably." multiple " refer to two or two with
On, in consideration of it, " multiple " can also be interpreted as " at least two " in the embodiment of the present invention."and/or" describes affiliated partner
Incidence relation indicates may exist three kinds of relationships, for example, A and/or B, can indicate：Individualism A exists simultaneously A and B, single
Solely there are these three situations of B.In addition, character "/", unless otherwise specified, it is a kind of "or" to typically represent forward-backward correlation object
Relationship.In addition, it is necessary to understand, in the description of the embodiment of the present invention, the vocabulary such as " first ", " second " are only used for distinguishing
The purpose of description, is not understood to indicate or imply relative importance, can not be interpreted as instruction or hint sequence.
Shown in Figure 1, the present invention discloses a kind of grouting method of light section diversion tunnel long distance construction, the note
Paste-making method includes：
S10 drilling hole position) is determined；
S20 drilling operation) is carried out according to the drilling hole position, and determines the bore state of the drilling hole position；
S30 it) is based on the bore state and grouting operation is carried out to the drilling hole position, and obtained during grouting operation
The slip casting state of the drilling hole position；
S40 grouting operation) is adjusted according to the slip casting state, and the case where the slip casting state meets preset condition
Under, terminate the grouting operation and obtains injected hole；
S50) examine the injected hole, in the case where the injected hole does not meet test stone, to the injected hole into
Row supplement grouting operation, until the injected hole meets test stone.
In embodiments of the present invention, the determining drilling hole position includes：It is axial according to the excavation direction of tunnel, with described
The excavation contour line of tunnel is boundary, radially arranges the drilling hole position, wherein the drilling hole position is to preset spacing cloth
It sets.In embodiments of the present invention, it is preferred that the default spacing is 30-50cm.
Refer to Fig. 2, in a kind of possible embodiment, be ensure tunnel construction in diversion tunnel safety into
Row, construction personnel are axial with the excavation direction of tunnel, and with the excavation contour line of tunnel using the face in tunnel as section
For boundary, drilling hole position is arranged on the face of tunnel, drilling hole position is and every in being arranged from axial direction to boundary is radial
It keeps presetting spacing between a drilling hole position.After the completion of drilling hole position is arranged, drilling hole position is numbered, of the invention real
It applies in example, the default spacing of the drilling hole position is 40cm.
In embodiments of the present invention, by tunnel face according to tunnel excavation direction and the outline excavation of tunnel
Multiple drilling hole positions are arranged with the arrangement radiated from inside to outside, to not only excavate the tunnel of face to being ahead of in line
Country rock has carried out firm operation, reduces the unsteady phenomena of the country rock around light section diversion tunnel under complex environment, simultaneously
It is more in the drilling hole position of the place arrangement closer to edge by the arrangement of boring holes structure of this programme, therefore to country rock around
Firm effect it is more apparent, therefore also further improve the firm effect to the country rock around tunnel.
In embodiments of the present invention, described that drilling operation is carried out to the drilling hole position, and determine the drilling hole position
Bore state, including：Drilling operation is carried out to the drilling hole position according to sequence from top to bottom, from outside to inside；Judge boring
Interburden layer whether is encountered during hole or water burst accident occurs；Interburden layer is encountered in the boring procedure or water burst accident occurs
In the case of, it determines that the drilling hole position is in abnormal bore state, interburden layer or generation is encountered in the boring procedure
In the case of water burst accident, determine that the drilling hole position is in normal drill state.
In embodiments of the present invention, since the stability of country rock in the light section diversion tunnel under complex environment is poor, because
This, which excavates the surrounding rock stability below face, will be less than the country rock excavated above face, and same principle excavates face
The surrounding rock stability in outside will also be less than the surrounding rock stability excavated among face, therefore by implementing the embodiment of the present invention
Technical solution can more ensure the safety in boring procedure.Further, the light section diversion tunnel under complex environment
It is likely to encounter interburden layer in boring procedure or there is a situation where water bursts, may be construction personnel if continuing drilling operation at this time
Bring personal safety dangerous, it is therefore desirable to corresponding classification is carried out according to the country rock situation of Present Borehole, in order to subsequently distinguish
Processing, to further increase the safety in work progress, ensures the personal safety of construction personnel.
Further, in embodiments of the present invention, the grouting method further includes：To described before grouting operation starts
Drilling hole position is cleaned.
Since the country rock in the light section diversion tunnel under complex environment usually has more rubble, after drilling
Many rubbles, silt or sewage etc. can be left in duct, and in order to as early as possible so that the slurries after slip casting are solidified to surrounding country rock
Together, thus the slurries of slip casting often have certain viscosity, if therefore not to after drilling duct carry out cleaning operation, one
Aspect can not exhaust rubble, the silt etc. in the country rock around duct, be easy in follow-up grouting operation and grout cures
Fully penetrated can not be carried out to larger range of country rock near duct, to greatly reduce the effect of slip casting；On the other hand
May be admixed together with rubble, silt in duct etc. from the slurries of Hui Yong in duct and solidification be generated, in duct
Certain blocking action is formed, subsequent grouting operation is unfavorable for, slip casting effect is reduced, reduces the working efficiency of construction personnel.
In embodiments of the present invention, described that the drilling hole position is cleaned, including：Risen sharply putting of die-offing using pressure
Water mode cleans the drilling hole position；Judge whether the water after cleaning is in clean state, and after the cleaning
In the case that water is in clean state, continue to clean the drilling hole position 10 minutes；And/or when judging the total cleaning cleaned
Between whether be less than 30 minutes, and total scavenging period be less than 30 minutes in the case of, continue to clean the drilling hole position.
In embodiments of the present invention, by carrying out cleaning operation to drilling hole position, and according to the cleaning state of cleaning and
Scavenging period dual indexes ensure the cleaning performance to drilling hole position, ensure that the drilling hole position after cleaning has qualified slip casting
Condition so that the slip casting effect of follow-up grouting operation is more in line with construction requirement, ensure that the personal safety of construction personnel.
In embodiments of the present invention, described to be based on the bore state to drilling hole position progress grouting operation, and
The slip casting state that the drilling hole position is obtained during grouting operation includes：It is in normal drill state in the drilling hole position
In the case of, grouting operation is carried out to the drilling hole position after the completion of hole to be drilled；It is in abnormal bore state in the drilling hole position
In the case of, grouting operation is carried out to the drilling hole position by the way of often boring one section of depth note, one section of depth, is bored each time
The depth in hole is less than drilling hole position total depth；Obtain during the grouting operation drilling hole position into slurry speed and
Grouting pressure in the drilling hole position is as the slip casting state；It is described that grouting operation, packet are adjusted according to the slip casting state
It includes：It is described be more than into slurry speed preset into slurry value and it is described be less than preset pressure value into slurry pressure in the case of, described in adjustment
The concentration of slurry and match ratio of grouting operation, and carry out grouting operation by the way of small pump amount low-pressure.
Fig. 3 is referred to, in a kind of possible embodiment, construction personnel drills in the drilling hole position to setting
In the process, for example, got into entire hole position 1/4 depth position, the construction accident of water burst has occurred, therefore judgement is worked as
Preceding drilling hole position is in abnormal bore state, stops drilling immediately, right immediately after carrying out cleaning operation to Present Borehole hole position
The drilling hole position carries out grouting operation, and monitor in real time during grouting operation grouting operation into slurry speed and slip casting
Pressure, in embodiments of the present invention, construction personnel's borehole conditions of Present Borehole hole position after carrying out grouting operation meet construction
It is required that construction personnel continues to carry out drilling operation to Present Borehole hole position at this time, and getting into next 1/4 depth, i.e. aggregate depth
When 1/2 depth of degree, stop drilling operation, and repeat above-mentioned grouting operation, and meets construction in Present Borehole hole position
In the case of it is required that, continue drilling operation, drilling and grouting operation until completing Present Borehole hole position.
It should be noted that in embodiments of the present invention, it is each in the case that drilling hole position is in abnormal bore state
The drilling depth of section can be adjusted according to actual conditions, and each section of drilling depth in above-described embodiment is only used as one kind
Specific embodiment, and should not be construed as limitation of the present invention, each section of drilling depth in the embodiment of the present invention can be with
May be the depth value that other are not more than total depth for 1/4 depth, each section of drilling depth can be with the drilling of other sections
Deep equality can not also be equal, should all belong to the scope of protection of the present invention, and does not do excessively repeating herein.
Further, in embodiments of the present invention, described in the case where the slip casting state meets preset condition, terminate
The grouting operation simultaneously obtains injected hole, including：It presets into slurry velocity amplitude, and judges into whether slurry speed is less than described in judging
It is described whether to reach preset pressure threshold value into slurry pressure；It is less than described preset into slurry velocity amplitude and described into slurry speed described
In the case of reaching the preset pressure threshold value into slurry pressure, the slip casting total amount that the grouting operation is consumed is obtained；Described
In the case that slip casting total amount reaches predetermined threshold value, determines that the slip casting state meets preset condition, terminate the grouting operation simultaneously
Obtain injected hole.
In a kind of possible embodiment, preset into slurry speed be 4-6L/min, it is preferable that preset into slurry speed be
5L/min, preset pressure threshold value are 2.5Mpa, and construction personnel has found during carrying out grouting operation to Present Borehole hole position
Present Borehole hole position into slurry speed be 6.5L/min, more than preset into slurry speed, and Present Borehole hole position into slurry pressure be
1.3Mpa is less than preset pressure threshold value, therefore judges that the concentration of slurry of current slip casting is too low or current injection speed is too fast or works as
The country rock gap of preceding drilling hole around is excessive and causes the slurries of injection that can not be carried out with the country rock of Present Borehole hole around
Effectively combine, therefore stop immediately to Present Borehole hole position grouting operation, and in time adjustment grouting serous fluid concentration of slurry and
Match ratio, and grouting operation is carried out by the way of small pump amount low-pressure, after slip casting for a period of time, find grouting operation into
Slurry speed, which reaches, to be preset into slurry speed and has reached preset pressure threshold value into slurry pressure, obtains current slip casting total amount at this time,
It was found that current slip casting total amount is 0.6m3, it is less than predetermined threshold value, such as 0.8m3, therefore continue grouting operation, it is known that slip casting it is total
It after amount reaches predetermined threshold value, determines that current grouting operation state meets preset condition, terminates grouting operation and obtain injected hole.
In embodiments of the present invention, by being monitored in real time to the parameters during slip casting, and joined according to items
Several changing condition adjustment grouting operations or grouting serous fluid, to ensure that the slurries of current grouting operation injection can effectively ooze
Thoroughly in the country rock around tunnel and solidifying, to provide enough firm effects, while the slurries solidified can also be with week
The country rock enclosed forms effective waterproof barrier together, prevents the generation for occurring the accidents such as water burst in the mining process of tunnel, keeps away
The deformation for having exempted from tunnel structure ensure that the stability of the tunnel in subsequent tunnel excacation, ensure construction personnel's
Personal safety.
In embodiments of the present invention, described in the case where the injected hole does not meet test stone, to the injected hole
Supplement grouting operation is carried out, until the injected hole meets test stone, including：Pressure water experiment is carried out to the injected hole；It obtains
Take water absorption of the injected hole under the pressure water experiment；In the case where the water absorption is more than default water suction threshold value, sentence
The injected hole that breaks does not meet test stone.
In embodiments of the present invention, after completing to the grouting operation of drilling hole position, it is necessary to the slip casting shape of drilling hole position
State is tested, and to further ensure that slip casting effect meets construction requirement, the personal safety of construction personnel is ensured, in a kind of possibility
Embodiment in, it is real that construction personnel carries out pressure water by being pressed into the water of preset pressure and preset flow to current injected hole
It tests, and the water absorption of injected hole is monitored in real time during carrying out pressure water experiment, and it is pre- to judge whether current water absorption is more than
If absorbing water threshold value, such as default water suction threshold value is 1L/min, if current water absorption is more than the default water suction threshold value, illustrate to work as
The slip casting effect of preceding injected hole does not meet test stone, needs to carry out grouting operation again, so that the slip casting effect of current injected hole
Fruit meets construction requirement.
In embodiments of the present invention, by carrying out inspection again to the injected hole after completion grouting operation with again
Ensure whether the injected hole meets construction requirement, the injected hole to further ensure each execution grouting operation, which meets, to be applied
Work requirement, ensure that the personal safety of construction personnel during subsequent construction.
Further, in embodiments of the present invention, the grouting method further includes：Excavation face based on the tunnel it is big
It is small, arrange at least one drain hole hole position in the excavation face of the tunnel, and to the sluicing after completing the drilling operation
Kong Kongwei carries out drilling operation, to generate drain hole.
Due to that may include more moisture in the country rock under complex environment around light section diversion tunnel, if straight
Connect to after drilling drilling hole position carry out grouting operation, then the slurries injected may because by country rock moisture dilute due to can not
Reach scheduled concentration requirement, to can not effectively be combined with the country rock of surrounding, and then slip casting effect is caused to be unable to reach construction
It is required that therefore in embodiments of the present invention, by tunnel excavation face arrange drain hole, the water in country rock is released naturally, from
And it is further ensured that the concentration of slurry of grouting operation injection meets preset requirement, and then ensure that the slip casting effect of grouting operation meets
Construction requirement ensures the personal safety of construction personnel.
Further, in embodiments of the present invention, the grouting method further includes：Obtain the charge for remittance amount of the tunnel；Base
The water collected in the tunnel is carried out detaching operation according to default scheme of drawing water in the charge for remittance amount.
The optional embodiment of the embodiment of the present invention is described in detail above in association with attached drawing, still, the embodiment of the present invention is simultaneously
The detail being not limited in the above embodiment can be to of the invention real in the range of the technology design of the embodiment of the present invention
The technical solution for applying example carries out a variety of simple variants, these simple variants belong to the protection domain of the embodiment of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the embodiment of the present invention pair
Various combinations of possible ways no longer separately illustrate.
In addition, arbitrary combination can also be carried out between a variety of different embodiments of the embodiment of the present invention, as long as it is not
The thought of the embodiment of the present invention is violated, disclosure of that of the embodiment of the present invention is equally should be considered as.
Claims (10)
1. a kind of grouting method of light section diversion tunnel long distance construction, which is characterized in that the grouting method includes：
Determine drilling hole position；
Drilling operation is carried out according to the drilling hole position, and determines the bore state of the drilling hole position；
Grouting operation is carried out to the drilling hole position based on the bore state, and obtains the drilling during grouting operation
The slip casting state of hole position；
Grouting operation is adjusted according to the slip casting state, and in the case where the slip casting state meets preset condition, terminates institute
It states grouting operation and obtains injected hole；
The injected hole is examined, in the case where the injected hole does not meet test stone, supplement note is carried out to the injected hole
Slurry operation, until the injected hole meets test stone.
2. grouting method according to claim 1, which is characterized in that the determining drilling hole position includes：
It is axial according to the excavation direction of tunnel, using the excavation contour line of the tunnel as boundary, radially arranges the brill
Kong Kongwei, wherein the drilling hole position is arranged with default spacing.
3. grouting method according to claim 1, which is characterized in that it is described that drilling operation is carried out to the drilling hole position,
And determine the bore state of the drilling hole position, including：
Drilling operation is carried out to the drilling hole position according to sequence from top to bottom, from outside to inside；
Judge whether to encounter interburden layer in boring procedure or water burst accident occurs；
In the case of encountering interburden layer in the boring procedure or water burst accident occurs, determine that the drilling hole position is in abnormal
Bore state determines the drilling hole position in the case of interburden layer is encountered in the boring procedure or water burst accident occurs
In normal drill state.
4. grouting method according to claim 3, which is characterized in that the grouting method further includes：It is opened in grouting operation
The drilling hole position is cleaned before beginning.
5. grouting method according to claim 4, which is characterized in that it is described that the drilling hole position is cleaned, including：
The mode that discharges water to die-off that risen sharply using pressure cleans the drilling hole position；
Judge whether the water after cleaning is in clean state, and in the case that the water after the cleaning is in clean state, after
It is continuous to clean the drilling hole position 10 minutes；And/or judge whether the total scavenging period cleaned is less than 30 minutes, and described
In the case that total scavenging period was less than 30 minutes, continue to clean the drilling hole position.
6. grouting method according to claim 3, which is characterized in that described to be based on the bore state to the drilling hole
Position carries out grouting operation, and the slip casting state for obtaining during grouting operation the drilling hole position includes：
In the case where the drilling hole position is in normal drill state, slip casting is carried out to the drilling hole position after the completion of hole to be drilled
Operation；
In the case where the drilling hole position is in abnormal bore state, by the way of often boring one section of depth note, one section of depth pair
The drilling hole position carries out grouting operation, and the depth to drill each time is less than drilling hole position total depth；
Obtain during the grouting operation drilling hole position into slurry speed and the drilling hole position in slip casting pressure
Power is as the slip casting state；
It is described that grouting operation is adjusted according to the slip casting state, including：
It is described be more than into slurry speed preset into slurry value and it is described be less than preset pressure value into slurry pressure in the case of, described in adjustment
The concentration of slurry and match ratio of grouting operation, and carry out grouting operation by the way of small pump amount low-pressure.
7. grouting method according to claim 1, which is characterized in that described to meet preset condition in the slip casting state
In the case of, terminate the grouting operation and obtains injected hole, including：
It is preset into whether slurry speed is less than into slurry velocity amplitude described in judgement, and whether reaches default pressure into slurry pressure described in judgement
Force threshold；
It is described into slurry speed be less than it is described preset into slurry velocity amplitude and it is described into slurry pressure reach the preset pressure threshold value
In the case of, obtain the slip casting total amount that the grouting operation is consumed；
It in the case where the slip casting total amount reaches predetermined threshold value, determines that the slip casting state meets preset condition, terminates described
Grouting operation simultaneously obtains injected hole.
8. grouting method according to claim 1, which is characterized in that described not meet test stone in the injected hole
In the case of, supplement grouting operation is carried out to the injected hole, until the injected hole meets test stone, including：
Pressure water experiment is carried out to the injected hole；
Obtain water absorption of the injected hole under the pressure water experiment；
In the case where the water absorption is more than default water suction threshold value, judge that the injected hole does not meet test stone.
9. according to the grouting method described in any claim in claim 1-8, which is characterized in that the grouting method also wraps
It includes：
The size of excavation face based on the tunnel, at least one drain hole hole position of the excavation face arrangement of the tunnel, and
Drilling operation is carried out to drain hole hole position after completing the drilling operation, to generate drain hole.
10. according to the grouting method described in any claim in claim 1-8, which is characterized in that the grouting method is also
Including：
Obtain the charge for remittance amount of the tunnel；
The water collected in the tunnel is carried out detaching operation according to default scheme of drawing water based on the charge for remittance amount.
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| CN201810310605.9A CN108590665A (en) | 2018-04-09 | 2018-04-09 | The grouting method of light section diversion tunnel long distance construction |
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| CN201810310605.9A CN108590665A (en) | 2018-04-09 | 2018-04-09 | The grouting method of light section diversion tunnel long distance construction |
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Citations (5)
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| JPH1130092A (en) * | 1997-07-10 | 1999-02-02 | Aichi Kogyo Kk | Cut-off device for tunnel opening |
| CN104453943A (en) * | 2014-10-27 | 2015-03-25 | 山东科技大学 | Method for controlling water-rich fractured rock mass comprehensive grouting under effective sealing batholite shortage condition |
| CN104481560A (en) * | 2014-12-09 | 2015-04-01 | 中煤第一建设有限公司 | Roadway roof aquifer treatment method |
| CN105178966A (en) * | 2014-06-04 | 2015-12-23 | 枣庄矿业集团中兴建安工程有限公司 | Grouting process for water blocking by wall breaking for mine vertical shafts |
| JP2016223127A (en) * | 2015-05-29 | 2016-12-28 | 大成建設株式会社 | Tunnel construction method |
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2018
- 2018-04-09 CN CN201810310605.9A patent/CN108590665A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1130092A (en) * | 1997-07-10 | 1999-02-02 | Aichi Kogyo Kk | Cut-off device for tunnel opening |
| CN105178966A (en) * | 2014-06-04 | 2015-12-23 | 枣庄矿业集团中兴建安工程有限公司 | Grouting process for water blocking by wall breaking for mine vertical shafts |
| CN104453943A (en) * | 2014-10-27 | 2015-03-25 | 山东科技大学 | Method for controlling water-rich fractured rock mass comprehensive grouting under effective sealing batholite shortage condition |
| CN104481560A (en) * | 2014-12-09 | 2015-04-01 | 中煤第一建设有限公司 | Roadway roof aquifer treatment method |
| JP2016223127A (en) * | 2015-05-29 | 2016-12-28 | 大成建設株式会社 | Tunnel construction method |
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