CN106640120A - Ground-surface fixed-point deep hole layered grouting construction method - Google Patents
Ground-surface fixed-point deep hole layered grouting construction method Download PDFInfo
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- CN106640120A CN106640120A CN201610930439.3A CN201610930439A CN106640120A CN 106640120 A CN106640120 A CN 106640120A CN 201610930439 A CN201610930439 A CN 201610930439A CN 106640120 A CN106640120 A CN 106640120A
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- slip casting
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- valve tube
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
Abstract
The invention discloses a ground-surface fixed-point deep hole layered grouting construction method. The method comprises the steps that vertical drilling is conducted from the ground surface of a construction area to the interior of the area needing to be grouted, wherein the hole depth is set to range from 80 meters to 150 meters; after the depth of a finished hole reaches the designed depth, a type-I sleeve valve tube (100) is put into the tail end of the drilled hole, designed grouting segments, put into the drilled hole, of a type-II sleeve valve tube (200) are connected segment by segment, and non-designed grouting segments, put into the drilled hole, of a type-III sleeve valve tube (300) are connected segment by segment; after the sleeve valve tubes are installed, a casing shell material is injected into a gap formed between the outer walls of the sleeve valve tubes and the inner wall of the drilled hole for hole sealing; after hole sealing is completed and solidifying is achieved, grouting core pipes (600) are put into the drilled hole; the tail end of the first grouting core pipe (600) penetrates through a stop-grouting plug (700) to be connected with the stop-grouting plug (700), and the other grouting core pipes (600) are connected segment by segment and then put into the sleeve valve tubes till the stop-grouting plug (700) is put into the bottoms of the sleeve valve tubes; a grouting pipe is connected to the core pipe end, grouting liquid is prepared, and then grouting operation starts through the grouting core pipes (600).
Description
Technical field
The present invention relates to Geotechnical Engineering field, more particularly to a kind of construction method for reinforcing ground.
Background technology
With railway construction scale expanding day, Railway Tunnel is more and more.During tunnel construction, country rock is sent out
Raw moderate finite deformation, bad stability, landslide disaster frequently occurs.When constructing tunnel is to fault belt, due to country rock grade
Generation rapid drawdown, adds fault belt and is often rich in subsoil water, and originally phase design of its support is difficult to maintain surrounding rock stability, occurs big
Scope is caved in.Additionally, shallow-buried sector coating is thin, surrounding rock stability is poor, easily occur the engineering accidents such as landslide during excavation.Tunnel
Landslide can cause construction delay, abuse, investment cost to increase, while constituting to the life security of site operation personnel
Grave danger, in order to ensure the stability of tunnel excavation, takes certain pre-reinforcement measure to be very important.
Further, since bridge pier substrate easily occurs founding on a large scale, foundation bed is disturbed, existed inside and outside open caisson thin
The disturbed soil of thickness ununiformity and the loose sand for pouring in, therefore base and surrounding certain limit soil layer need to carry out consolidation process.By
There is certain increase in Sediment rehabilitation back open caisson substrate load, soil layer need to carry out consolidation process with full in substrate and surrounding certain limit
Design requirement after foot reparation.Because accident causes open caisson concrete damage, to guarantee follow-up repairing construction in, inhale mud, clear base,
The construction safeties such as bottom concrete and quality are poured, bridge pier substrate and surrounding certain limit soil layer need to carry out consolidation process.
One kind as disclosed in Chinese patent application the 201410382380.Xth is adapted to the tomography during constructing tunnel
Crushed zone Treatment for collapse method, including step：The adjacent country rock of step 1 pair landslide section carries out bow member reinforcing；Step 2 cleaning landslide
Body；Gunite concrete is closed on landslide face after the completion of cleaning；Jack is acted on step 3 the stand bottom of template
Portion corner；The interval of steel arch-shelf width is reserved between each template, and carries out stand in time；Together with template is collectively forming with steel arch-shelf
Prop up sheath；The hole that step 4 is retained in advance through template, by the way of high-pressure slip-casting, forms vault concrete layer；In steel arch-shelf
Arch springing and side-walls squeeze into slip casting ductule；Step 5 is added in the front end with template with steel arch-shelf as bed die using grouting with small pipe
Gu, the operation of next construction cycle stage of landslide section is carried out, concrete steps repeat 1～4；Step 6 is led to when second circulation is completed
The pre-buried delivery port of step 2 is crossed, the support of shield arch layer concrete is formed.But, the method is the tunnel for having occurred and that landslide
The working measure of grouting with small pipe reinforcing is carried out in the administering method in road, and the hole body just for landslide, without open
How to being reinforced through the tunnel of fault belt and the how construction method reinforced to tunnel earth's surface.
A kind of and for example construction on reinforcing shield tunnel end stratum disclosed in Chinese patent application 201410733579.2
Structure and construction method, the constructing structure includes：One active well face, includes that equal with shield machine radius treats on active well face
Shield work operations well portal；Many pre-grouting long pipe sheds, treat that shield is made perpendicular to treating that shield work operations well face is arranged on
Industry active well portal top；Multiple horizontal grouting pipes, are arranged on perpendicular to shield work operations well face to be treated and treat shield operation work
Make in well portal；Include the PVC mini-valve tubes with injected hole in horizontal grouting pipe.By setting in active well portal above and within
Put many pre-grouting long pipe sheds and horizontal grouting pipe, form cup type and combine to tunnel end stratum operation overlying regions and interior
The soil body in portion carries out reinforcement protection, prevents from operation process, because operating area top and the soil body are insecure, causing leak
Leakage is husky, affects construction quality, it is ensured that shield passes in and out safely portal.But the invention is still suffered from the drawback that or not enough：(1)、
The method is not suitable for passing through the reinforcing of fault belt shallow-buried sector；(2), the method is entered using constant grouting pressure
Row slip casting, it is difficult to adapt to the characteristics of surrounding rock of different fault belts；(3) material of mini-valve tube is polrvinyl chloride (PVC), and it is difficult to
Larger bearing pressure is born, depth capacity is only capable of reaching 30～40 meters or so, it is difficult to for deep hole grouting.
Therefore it provides a kind of vertical grouting method of the deep hole for being suitable for reinforcing deep ground becomes asking of being badly in need of solving in the industry
Topic.
The content of the invention
It is an object of the invention to provide a kind of earth's surface pinpoints deep hole delamination pour slurry construction method, the method can realize 80～
The vertical slip casting of deep hole of 150 meters of Deep Rock soils.
According to an aspect of the present invention, there is provided a kind of earth's surface pinpoints deep hole delamination pour slurry construction method, including：(1) it is, fixed
Position goes out to need slip casting region and drills towards the internal vertical for needing slip casting region from construction, and rig completes the backed off after random brill that drills
Bar, aperture is set as 150～220 millimeters, and hole depth is set as 80～150 meters；(2), provide type Ⅰ mini-valve tube, some IIth
Type mini-valve tube and some IIIth type mini-valve tubes；(3) end of drilling, will be entered under type Ⅰ mini-valve tube, is continued successively by the IIth
Enter the design slip casting section of drilling under type mini-valve tube, the non-design slip casting section of drilling will be entered under the IIIth type mini-valve tube successively；(4), tuck inside the sleeve
After the completion of valve pipe is installed, sealing of hole is carried out to drilling in case note to the space injection sleeve shell material between mini-valve tube outer wall and drill hole inner wall
Return on gap of the injection slurry along between the outer wall of mini-valve tube and drilling during slurry；(5), prepare some slip casting core pipes and stop
Slurry plug, the end of first slip casting core pipe connects through stop grouting plug and stop grouting plug, then after remaining slip casting core pipe is connected section by section under
Enter in mini-valve tube until entering the target slip casting position of mini-valve tube under stop grouting plug；(6), prepare ordinary cement single slurry and promote the strong anti-
Dispersion economization agent, adds with the anti-dispersion economization agent of promoting the strong of volume percentage 3%～5% in ordinary cement single slurry, mixes
Injection slurry is obtained after closing uniformly, injection slurry is delivered to into slip casting core pipe by Grouting Pipe using slip casting machine；(7), sheath body to be implanted
Material sealing of hole passes through high pressure charging pipe to water filling in stop grouting plug, stop grouting plug dilation by water injection and mini-valve tube after completing about 40～50 minutes
Inwall extruding is close to, and is formed and stop in hole slurry system, and the frictional force that stop grouting plug is produced with the tube wall of mini-valve tube be enough to resist slip casting pressure
Power, by slip casting core pipe slip casting machine pipeline grouting behind shaft or drift lining is connected, and slip casting reaches ending standard, stops slip casting, after the completion of, by stop grouting plug
Pressure release, then rises and pulls out slip casting core pipe and stop grouting plug to another target slip casting position；And (8), repeat step (7), implement successively
All target setting slip casting position slip castings, to complete single hole slip casting operation.
Selectively, rotary drilling during drill hole of drilling machine in step (1), probing footage per round trip is controlled within 2 meters.To prevent
There is the phenomenon such as spiral hole wall or undergauge, after often creeping into one section cleaning bottom of hole is carried out, rotating speed, pressure are uniform in drilling process, to protect
Card hole wall is round and smooth, rule.
Selectively, the hole depth that drills should be determined correctly, per 20～30 meters and end Kong Shiying carries out hole depth and corrects, and be given
Record, it is ensured that hole depth error is not more than 0.2%.Under water during slip casting, cast in place pile should be according to the actual drilling of water level real time correction
Hole depth.
Selectively, need to judge disturbed soil and original state soil layer separating surface before drilling, it is ensured that grouting and reinforcing scope satisfaction sets
Meter is required.
Wherein, slip casting takes segmentation retrusive grouting process, slip casting segmentation step pitch to be set as 60～120 lis in step (7)
Rice, the grouting pressure of target slip casting position reaches grouting design final pressure, then the slip casting of target end slip casting position, retreats under implementing
One target slip casting position slip casting.Wherein, slip casting initial pressure expansion start pressure is set as at least 2 MPas, grouting design final pressure
Less than or equal to 6 MPas.
Selectively, slip casting core pipe is pulled out and causes slip casting core pipe protruded length more than 2 meters then during segmentation retrogressing slip casting
Stop slip casting, remove and grouting pipeline continuation slip casting is again coupled to after long slip casting core pipe.
Selectively, used in step (2) type Ⅰ mini-valve tube, the IIth type mini-valve tube and the IIIth type mini-valve tube are by straight
70～80 millimeters of footpath, the hot rolled seamless steel tube that 3～10 millimeters of wall thickness is made, and length is set as every 5～8 meters of section, it is preferable that sleeve valve
3～5 millimeters of thickness of pipe wall.
Selectively, the nose tip closing of type Ⅰ mini-valve tube, the length at tip is set as 10～20 centimetres, type Ⅰ sleeve
Valve pipe is disposed with the tubaeform extravasating hole from the outside wall borehole enlargement of inwall along tube wall, and extravasating hole is 5 in the aperture of inwall side
～8 millimeters, extravasating hole is 8～12 millimeters in the aperture of outer wall side, the longitudinal cross-section spacing for often arranging extravasating hole is set as 30～
50 centimetres, arranged for interval has 2～4 holes on the every section of ring of type Ⅰ mini-valve tube, and type Ⅰ mini-valve tube is away from the tip
One end is provided with type Ⅰ screw thread.
Selectively, the IIth type mini-valve tube is disposed with the outside wall borehole enlargement of inwall from the IIth type mini-valve tube along tube wall
Tubaeform extravasating hole, extravasating hole is 5～8 millimeters in the aperture of inwall side, and extravasating hole is 8～12 millis in the aperture of outer wall side
Rice, the longitudinal cross-section spacing for often arranging extravasating hole is set as 30～50 centimetres.The ring of the IIth type mini-valve tube is spaced cloth on every section
2～4 holes are equipped with, the IIth type mini-valve tube one end is provided with type Ⅰ screw thread, the other end and is provided with the IIth type screw thread.
Selectively, the IIIth type mini-valve tube is hot rolled seamless steel tube.IIIth type mini-valve tube one end is provided with type Ⅰ screw thread, another
One end is provided with the IIth type screw thread.
Selectively, type Ⅰ mini-valve tube, the IIth type mini-valve tube and the IIIth type mini-valve tube according to needed for the selection of rig model
Length.
Selectively, the extravasating hole on the tube wall of type Ⅰ mini-valve tube and the IIth type mini-valve tube can for inner diameter with it is outer
The hole of wall equal diameters, extravasating hole aperture is set as 6～10 millimeters.
Selectively, the type Ⅰ screw thread of type Ⅰ mini-valve tube is connected with the IIth type screw thread of the IIth type mini-valve tube, per adjacent
Two the IIth type mini-valve tubes or the IIIth type mini-valve tube type Ⅰ screw thread and the IIth type screwed connection, type Ⅰ screw thread, the IIth type screw thread
Length be at least 80 millimeters.
Selectively, type Ⅰ screw thread and the IIth type screw thread be after chamfered car into crin.
Preferably, the extravasating hole of type Ⅰ mini-valve tube and the IIth type mini-valve tube from mini-valve tube inside, outwards starch by unidirectional overflowing.
Wherein, the preparation flow of the extravasating hole of type Ⅰ mini-valve tube and the IIth type mini-valve tube is：First with 5～8 millimeters of diameter
Drill bit perforate, drills after tube wall with drill bit reaming with one heart on the basis of former drilling of 8～12 millimeters of diameter, the milli of counterbore depth 3～5
Rice, forms table top in hole, reaming procedure takes low speed slow-motion, it is ensured that reaming table top is smooth.Reaming table top is smeared with quick setting cement
After paste valve block, valve block diameter determines according to mesa diameter, and throttle slice thickness is set as 0.4～0.7 millimeter.Tightly wrapped with adhesive waterproof tape
Obtain from mini-valve tube inside outwards unidirectionally overflowing the extravasating hole starched.
Wherein, mini-valve tube decentralization process is forbidden to use rig strong rammer, in order to avoid destruction screwed connection.
Selectively, slip casting core pipe is seamless by the hot rolling of a diameter of 20～30 millimeters, 2.5～5 millimeters of wall thickness in step (4)
Steel pipe is cut into, and the length for often saving slip casting core pipe is 1.5～2.5 meters, is connected by screw thread between every adjacent two sections of slip casting core pipes
Connect.
Selectively, the stop grouting plug used in step (4) is 40～60 millimeters of diameter, grows 0.8～2 meter of water-bag type high pressure
Stop grouting plug, high pressure stop grouting plug is at least pressure 8 MPas.
Selectively, high pressure of the stop grouting plug from bearing capacity more than 8 MPas stops slurry system to ensure smoothly entering for slip casting
OK.
Selectively, sleeve shell material is obtained by water, sulphate aluminium cement and bentonite mixed preparing in step (5), wherein
Water, sulphate aluminium cement, bentonitic ratio are about 1～2:1:1～2.
Selectively, the consumption of sleeve shell material is set as 400～600 liters.
Selectively, implementation steps (1)-(8) are repeated with the slip casting for needing slip casting region to complete several single holes.
Preferably, before step (1), also include verifying geological conditions, root to needing slip casting region to carry out geological exploration
Determine that directly drilling or selection sleeve pipe follow up as drilling outer guard with drilling rod in boring procedure in step (1) according to geological conditions
Squeeze into prevent drilling destruction.
Selectively, sleeve pipe follow-up drilling rod is selected to squeeze into drilling, further after the completion of mini-valve tube is installed, injection sleeve shell material
Rise before sealing of hole and pull out sleeve pipe.
Selectively, the material of sleeve pipe is steel.
Selectively, the slip casting of each target slip casting position is also included to the target slip casting position after terminating in step (7)
Slip casting result detected that reach the slip casting that slip casting requirement then starts next target slip casting position, not up to slip casting is required then
To the target slip casting position slip casting again.
Selectively, injection slurry is selectively supplemented when supplementing slip casting and is set as superfine cement single slurry.
Wherein, type Ⅰ screw thread is female thread or external screw thread, and the IIth type screw thread is can connection corresponding with type Ⅰ screw thread
External screw thread or female thread.
Wherein, a kind of earth's surface pinpoints the points for attention of deep hole delamination pour slurry construction method：1. keyhole perpendicularity, drills
Quality direct relation the success or failure of slip casting, if borehole perpendicularity is poor, not only the decentralization of slip casting core pipe, rising for stop grouting plug can be pulled out
Etc. impacting, relatively large deviation can be also produced to slip casting hole position, form slip casting blind area, affect slip casting effect；2. sleeve shell material is applied
Working medium amount, the construction of sleeve shell material is the operation of mini-valve tube retrusive slip casting most critical, and the intensity of sleeve shell material and packed height are determined
Can serosity be efficiently injected into stratum, form uniform grouting and reinforcing body；3. the Stress control during slip casting, during slip casting,
Moment notes being pumped the change with flow, if midge amount very big or pressure declines suddenly, grouting pressure long-time does not rise, Ying Cha
Bright reason.Such as running pulp interchangeable serosity, adjustment grout coordinate ratio, shorten serosity gel time, if necessary using interval slip casting, to reach
To control domain slip casting purpose；4., in strict accordance with slip casting subregion, each region is first noted periphery hole, notes interstitial hole afterwards.
The invention has the beneficial effects as follows：(1), a kind of earth's surface of the invention pinpoints deep hole delamination pour slurry construction method,
80～150 meters of depth slip casting can be realized；(2) whether, is determined according to geological conditions select in boring procedure sleeve pipe as brill
Hole outer guard is squeezed into prevent drilling destruction with drilling rod follow-up, it is ensured that drilling quality causes drilling report to avoid Geological Reasons
It is useless；(3), adopt water-bag type stop grouting plug and guarantee that its expansion start pressure is at least 2 MPas of hole depth pressures to avoid more than 100 meters
Power causes stop grouting plug expansion to cause stop grouting plug to act the problem for pulling out difficulty, it is ensured that the exploitativeness of deep hole sleeve valve barrel grouting causes to apply
Work is smoothed out；(4), slip casting core pipe is processed making using seamless steel pipe, improves the stress-bearing capability of slip casting core pipe, it is to avoid silk
Button frequent breakage, reduce loss rate, it is to avoid because being difficult to pull out after the bending of slip casting core pipe stress, the problems such as cause injected hole to scrap.
Description of the drawings
Fig. 1 is the grouting construction process schematic diagram that a kind of earth's surface of the present invention pinpoints deep hole delamination pour slurry construction method.
Fig. 2 is the structural representation of the slip casting core pipe and stop grouting plug of the present invention in mini-valve tube.
Fig. 3 is a kind of structural representation of the type Ⅰ mini-valve tube of earth's surface fixed point deep hole delamination pour slurry construction method of the present invention
Figure.
Fig. 4 is a kind of structural representation of the IIth type mini-valve tube of earth's surface fixed point deep hole delamination pour slurry construction method of the present invention
Figure.
Fig. 5 is a kind of structural representation of the IIIth type mini-valve tube of earth's surface fixed point deep hole delamination pour slurry construction method of the present invention
Figure.
Specific embodiment
Refer to Fig. 1,2, a kind of a kind of non-limiting embodiment of the invention, there is provided earth's surface fixed point deep hole point
Layer grouting construction method, the method comprises the following steps S1-S8.
In step sl, orienting needs slip casting region and drills towards the internal vertical for needing slip casting region from construction,
Rig completes the backed off after random drilling rod that drills, and aperture setting is for about 200 millimeters, and hole depth setting is for about 120 meters.
In step s 2, there is provided type Ⅰ mini-valve tube 100, some IIth type mini-valve tubes 200 and some IIIth type sleeves
Valve pipe 300.
In step s3, the end of drilling will be entered under type Ⅰ mini-valve tube 100 using deadweight, continues successively to using deadweight
Enter the design slip casting section of drilling under IIth type mini-valve tube 200, the non-of drilling will be entered under the IIIth type mini-valve tube 300 successively using deadweight
Design slip casting section.
In step s 4, after the completion of mini-valve tube is installed, to the space injection about 450 between mini-valve tube outer wall and drill hole inner wall
Rise sleeve shell material to drilling carry out sealing of hole in case during slip casting injection slurry along mini-valve tube outer wall and drilling between gap
On return.
In step s 5, some slip casting core pipes 600 and stop grouting plug 700 are prepared, the end of first slip casting core pipe 600 is worn
Cross stop grouting plug 700 and stop grouting plug 700 connects, then be lowered in mini-valve tube after remaining slip casting core pipe 600 is connected section by section until only
Enter the target slip casting position of mini-valve tube under slurry plug 700, stop grouting plug 700 is connected by high pressure charging pipe 750 with water pump 770.Will note
Slurry core pipe 600 is lowered in mini-valve tube the bottom for entering mini-valve tube up under stop grouting plug 700, and stop grouting plug 700 is above carried into 60 centimetres.
In step s 6, prepare ordinary cement single slurry and anti-dispersion economization agent of promoting the strong, add in ordinary cement single slurry
In addition injection slurry is obtained after the anti-dispersion economization agent mix homogeneously of promoting the strong of volume percentage 3%, using slip casting machine by injection slurry
Slip casting core pipe 600 is delivered to by Grouting Pipe (not shown).
In the step s 7, by high pressure charging pipe 750 to stop grouting plug 700 after sleeve shell material sealing of hole to be implanted is completed about 45 minutes
Interior water filling,
The inwall extruding of the dilation by water injection of stop grouting plug 700 and mini-valve tube is close to, and forms in hole only slurry system, stop grouting plug 700 and
The frictional force that the tube wall of mini-valve tube is produced reaches 2 MPas and be enough to resist grouting pressure, and by slip casting core pipe 600 slip casting machine pipe is connected
Road grouting behind shaft or drift lining, grouting pressure reaches 6 MPas of ending standard, stops slip casting, after the completion of, by the pressure release of stop grouting plug 700, then rise and pull out note
Slurry core pipe 600 and stop grouting plug 700 are to another target slip casting position.
And in step s 8, repeat step (7) implements successively all target setting slip casting position slip castings, to complete list
Hole slip casting operation.
In the non-limiting embodiment, the type Ⅰ mini-valve tube 100, the IIth type mini-valve tube 200 used in step S2 with
And the IIIth type mini-valve tube 300 by 80 millimeters of diameter, the hot rolled seamless steel tube that 5 millimeters of wall thickness is made, and length is set as every 5 meters of section.
As shown in figure 3, the nose tip closing of type Ⅰ mini-valve tube 100, the length at tip 110 is 10 centimetres, type Ⅰ sleeve
Valve pipe 100 is disposed with the tubaeform extravasating hole 120 from the outside wall borehole enlargement of inwall along tube wall, and extravasating hole 120 is in inwall side
Aperture be 6 millimeters, extravasating hole outer wall side aperture be 10 millimeters.The longitudinal cross-section spacing for often arranging extravasating hole is set as 30
Centimetre, it is cross on the every section of ring of type Ⅰ mini-valve tube 100 to be disposed with 4 holes.Type Ⅰ mini-valve tube 100 is away from the tip
110 one end is provided with female thread 140.
As shown in figure 4, the IIth type mini-valve tube 200 is disposed with the outside cinclides of inwall from the IIth type mini-valve tube 200 along tube wall
The tubaeform extravasating hole 220 that footpath expands, extravasating hole 220 is 6 millimeters in the aperture of inwall side, hole of the extravasating hole in outer wall side
Footpath is 10 millimeters.The longitudinal cross-section spacing for often arranging extravasating hole is set as 30 centimetres, ten on the every section of ring of the IIth type mini-valve tube
Font is disposed with 4 holes, and the one end of the IIth type mini-valve tube 200 is provided with the female thread 240, other end and is provided with external screw thread 250.
As shown in figure 5, the IIIth type mini-valve tube 300 is hot rolled seamless steel tube, the one end of the IIIth type mini-valve tube 300 is provided with female thread
340th, the other end is provided with external screw thread 350.
Wherein, the length of female thread 140,240,340 is 80 millimeters, and the length of external screw thread 250,350 is 80 millimeters.
In the non-limiting embodiment, in step s 4 slip casting core pipe 600 is by a diameter of 25 millimeters, 4 millimeters of wall thickness
Hot rolled seamless steel tube be cut into, the length for often saving slip casting core pipe 600 is 2 meters, per adjacent two sections of slip casting core pipes 600 between lead to
Cross threaded connection.
As a kind of non-limiting embodiments one, before step S1, also include being surveyed to needing slip casting region to carry out geology
The bright geological conditions of probing, according in boring procedure in geology condition determination step S1, directly drilling or selection sleeve pipe are outer as drilling
Side protection squeezes into prevent drilling destruction with drilling rod follow-up.Select sleeve pipe follow-up to squeeze into, further include to have been installed in mini-valve tube
Rise before Cheng Hou, injection sleeve shell material sealing of hole and pull out sleeve pipe.
Used as a kind of non-limiting embodiments two, the stop grouting plug for using in step s 4 stops slurry system for import ZF-A50.
Used as a kind of non-limiting embodiments three, in step s 5 sleeve shell material is by water, sulphate aluminium cement and bentonite
Mixed preparing is obtained.Wherein, water, sulphate aluminium cement, bentonitic ratio are 2:1:1.
Used as a kind of non-limiting embodiments four, slip casting segmentation in the step s 7 retreats slip casting core pipe 600 during slip casting
Rising to pull out causes the protruded length of slip casting core pipe 600 then to stop slip casting more than 2 meters, to remove and continue slip casting after long slip casting core pipe 600.
Used as a kind of non-limiting embodiments five, design also includes setting this in the step s 7 after the completion of slip casting position slip casting
The slip casting result of meter slip casting position is detected that then the design slip casting position slip casting is completed to reach slip casting requirement, not up to slip casting
Require that then the design slip casting position slip casting is carried out to supplement slip casting, to supplement and reach slip casting requirement then design slip casting after the completion of slip casting
Position slip casting is completed, and injection slurry is selectively supplemented when supplementing slip casting and is set as superfine cement single slurry.
Although here has described the preferred embodiment of the present invention in detail, it is to be understood that the invention is not limited in this
In describe in detail and the concrete structure that illustrates and step, without departing from the spirit and scope of the present invention can be by this area
Technical staff realize other modifications and variant, such as the order between each construction procedure can be exchanged as needed.Additionally,
The parameters such as size, temperature, concentration or time in the present invention can be according to concrete application conditions in scope disclosed in this invention
Interior appropriate selection.
Claims (10)
1. a kind of earth's surface pinpoints deep hole delamination pour slurry construction method, including：
(1) orienting needs slip casting region and drills towards the internal vertical for needing slip casting region from construction, and the rig is completed
Drilling backed off after random drilling rod, aperture is set as 150～220 millimeters, and hole depth is set as 80～150 meters；
(2) type Ⅰ mini-valve tube, some IIth type mini-valve tubes and some IIIth type mini-valve tubes are provided；
(3) end of the drilling will be entered under the type Ⅰ mini-valve tube, continuation will enter successively described under the IIth type mini-valve tube
The design slip casting section of drilling, will enter the non-design slip casting section of the drilling successively under the IIIth type mini-valve tube；
(4) after the completion of the mini-valve tube is installed, to the space injection sleeve shell material pair between the mini-valve tube outer wall and drill hole inner wall
The drilling carries out sealing of hole in case gap of the injection slurry along between the outer wall of the mini-valve tube and the drilling during slip casting
On return；
(5) some slip casting core pipes and stop grouting plug are prepared, the stop grouting plug is connected with high pressure charging pipe, first slip casting core
The end of pipe connects through the stop grouting plug and the stop grouting plug, then is lowered into sleeve after remaining described slip casting core pipe is connected section by section
Until entering the target slip casting position of the mini-valve tube under the stop grouting plug in valve pipe；
(6) prepare ordinary cement single slurry and anti-dispersion economization agent of promoting the strong, add with volume in the ordinary cement single slurry
The anti-dispersion economization agent of promoting the strong of percentages 3%～5%, obtains injection slurry after mix homogeneously, using slip casting machine by the slip casting
Liquid is delivered to the slip casting core pipe by Grouting Pipe；
(7) noted into the stop grouting plug by the high pressure charging pipe after sleeve shell material sealing of hole to be implanted is completed about 40～50 minutes
The inwall extruding of water, the stop grouting plug dilation by water injection and the mini-valve tube is close to, and forms in hole only slurry system, the stop grouting plug and
The frictional force that the tube wall of the mini-valve tube is produced be enough to resist grouting pressure, be connected after slip casting machine pipeline by the slip casting core pipe
Slip casting, slip casting reaches ending standard, stops slip casting, after the completion of, by the stop grouting plug pressure release, then rise pull out the slip casting core pipe and
Stop grouting plug is to another target slip casting position；And
(8) repeat step (7), implement successively all target setting slip casting position slip castings, to complete single hole slip casting operation.
2. a kind of earth's surface as claimed in claim 1 pinpoints deep hole delamination pour slurry construction method, it is characterised in that in step (7)
The slip casting takes segmentation retrusive grouting process, slip casting segmentation step pitch to be set as 60～120 centimetres, the target slip casting position
Grouting pressure reach the grouting design final pressure, then terminate the slip casting of the target slip casting position, retreat and implement next section of note
Slurry, wherein, the slip casting initial pressure expansion start pressure is set as at least 2 MPas, and the grouting design final pressure is less than or equal to 6
MPa.
3. a kind of earth's surface as claimed in claim 2 pinpoints deep hole delamination pour slurry construction method, it is characterised in that segmentation retreats note
The slip casting core pipe rises to pull out and causes the slip casting core pipe protruded length then to stop slip casting more than 2 meters during slurry, removes long
Grouting pipeline is again coupled to after the slip casting core pipe and continues slip casting.
4. a kind of earth's surface as claimed in claim 1 pinpoints deep hole delamination pour slurry construction method, it is characterised in that in step (2)
The type Ⅰ mini-valve tube, the IIth type mini-valve tube and the IIIth type mini-valve tube for using is by 70～80 millimeters of diameter, wall
Thick 3～5 millimeters hot rolled seamless steel tube is made, and length is set as every 4～6 meters of section；
The nose tip closing of the type Ⅰ mini-valve tube, the length at the tip is set as 10～20 centimetres, the type Ⅰ sleeve
Valve pipe is disposed with the tubaeform extravasating hole from the outside wall borehole enlargement of inwall, aperture of the extravasating hole in inwall side along tube wall
For 5～8 millimeters, the extravasating hole is 8～12 millimeters in the aperture of outer wall side, often arranges the longitudinal cross-section spacing of the extravasating hole
It is set as 30～50 centimetres, arranged for interval has 2～4 holes, the type Ⅰ sleeve on the every section of ring of the type Ⅰ mini-valve tube
Valve pipe is provided with type Ⅰ screw thread away from the one end at the tip；
The IIth type mini-valve tube is disposed with the loudspeaker of the outside wall borehole enlargement of inwall from the IIth type mini-valve tube along tube wall
Shape extravasating hole, the extravasating hole inwall side aperture be 5～8 millimeters, the extravasating hole outer wall side aperture be 8～
12 millimeters, the longitudinal cross-section spacing for often arranging the extravasating hole is set as 30～50 centimetres, and the ring of the IIth type mini-valve tube is every
Arranged for interval has 2～4 holes on section, and described IIth type mini-valve tube one end is provided with type Ⅰ screw thread, the other end and is provided with the IIth type silk
Button；And
The IIIth type mini-valve tube is hot rolled seamless steel tube, and described IIIth type mini-valve tube one end is provided with type Ⅰ screw thread, the other end and sets
There is the IIth type screw thread.
5. a kind of earth's surface as claimed in claim 4 pinpoints deep hole delamination pour slurry construction method, it is characterised in that the type Ⅰ
The type Ⅰ screw thread of mini-valve tube is connected with the IIth type screw thread of the IIth type mini-valve tube, described the per adjacent two
II type mini-valve tube or the IIIth type mini-valve tube type Ⅰ screw thread and the IIth type screwed connection, the type Ⅰ screw thread, the described IIth
The length of type screw thread is at least 80 millimeters.
6. a kind of earth's surface as claimed in claim 1 pinpoints deep hole delamination pour slurry construction method, it is characterised in that in step (4)
The slip casting core pipe is cut into by the hot rolled seamless steel tube of a diameter of 20～30 millimeters, 2.5～5 millimeters of wall thickness, is often saved described
The length of slip casting core pipe is 1.5～2.5 meters, and between every adjacent two sections slip casting core pipes screwed connection is passed through.
7. a kind of earth's surface as claimed in claim 1 pinpoints deep hole delamination pour slurry construction method, it is characterised in that in step (4)
The stop grouting plug for using is 40～60 millimeters of diameter, grows 0.8～2 meter of water-bag type high pressure stop grouting plug, the high pressure stop grouting plug
It is at least pressure 8 MPas.
8. a kind of earth's surface as claimed in claim 1 pinpoints deep hole delamination pour slurry construction method, it is characterised in that in step (5)
The sleeve shell material is obtained by water, sulphate aluminium cement and bentonite mixed preparing, wherein water, sulphate aluminium cement, bentonite
Ratio be (1～2):1:(1～2).
9. a kind of earth's surface as claimed in claim 8 pinpoints deep hole delamination pour slurry construction method, it is characterised in that repeat to implement step
Suddenly (1)-(8) are with the slip casting for needing slip casting region to complete several single holes.
10. a kind of earth's surface as any one of claim 1～9 pinpoints deep hole delamination pour slurry construction method, and its feature exists
In, before step (1), also include verifying geological conditions to needing slip casting region to carry out geological exploration, it is true according to geological conditions
Determine in step (1) in boring procedure directly drilling or select sleeve pipe to squeeze into drilling rod follow-up as drilling outer guard in case
The only drilling destruction.
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| CN201610930439.3A CN106640120B8 (en) | 2016-10-31 | 2016-10-31 | Layered grouting construction method for fixed-point deep holes on earth surface |
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|---|---|---|---|
| CN201610930439.3A CN106640120B8 (en) | 2016-10-31 | 2016-10-31 | Layered grouting construction method for fixed-point deep holes on earth surface |
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| CN106640120A true CN106640120A (en) | 2017-05-10 |
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| CN106640120B8 CN106640120B8 (en) | 2022-01-07 |
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| CN107013220A (en) * | 2017-05-16 | 2017-08-04 | 深圳市瑞利源工程技术有限公司 | A kind of tunnel deep hole grouting method, pipe canopy and retrusive Grouting Pipe |
| CN109209448A (en) * | 2018-08-28 | 2019-01-15 | 北京瑞威世纪铁道工程有限公司 | Tunnel surface grouting blocks water construction method |
| CN109208578A (en) * | 2018-08-28 | 2019-01-15 | 北京瑞威世纪铁道工程有限公司 | Abutment orients grout injection control sedimentation method |
| CN109354469A (en) * | 2018-08-28 | 2019-02-19 | 北京瑞威世纪铁道工程有限公司 | Cement grouting material |
| CN109538240A (en) * | 2018-08-28 | 2019-03-29 | 北京瑞威世纪铁道工程有限公司 | The method for tunnel construction of earth's surface orientation heavy caliber deep hole grouting |
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| CN110617029A (en) * | 2019-09-16 | 2019-12-27 | 中国矿业大学 | Drilling segmented retreating type grouting method |
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| CN110792440A (en) * | 2019-11-07 | 2020-02-14 | 中铁二十局集团有限公司 | Construction method of water-rich loess tunnel penetrating through loess towards valley |
| CN111852515A (en) * | 2020-08-31 | 2020-10-30 | 中铁十六局集团有限公司 | Tunnel stratum pre-reinforcement comprehensive grouting method |
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| CN113585267A (en) * | 2021-07-23 | 2021-11-02 | 中国水利水电第十六工程局有限公司 | Sleeve valve grouting process |
| CN113882356A (en) * | 2021-10-14 | 2022-01-04 | 中铁隆工程集团有限公司 | Ground grouting reinforcement construction process |
| CN115450217A (en) * | 2022-09-06 | 2022-12-09 | 中国水电基础局有限公司 | Grouting method for perforating and wall breaking grouting in orifice embedded pipe |
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| CN107013220A (en) * | 2017-05-16 | 2017-08-04 | 深圳市瑞利源工程技术有限公司 | A kind of tunnel deep hole grouting method, pipe canopy and retrusive Grouting Pipe |
| CN109354469B (en) * | 2018-08-28 | 2022-10-28 | 北京瑞威世纪铁道工程有限公司 | Cement grouting material |
| CN109209448A (en) * | 2018-08-28 | 2019-01-15 | 北京瑞威世纪铁道工程有限公司 | Tunnel surface grouting blocks water construction method |
| CN109208578A (en) * | 2018-08-28 | 2019-01-15 | 北京瑞威世纪铁道工程有限公司 | Abutment orients grout injection control sedimentation method |
| CN109354469A (en) * | 2018-08-28 | 2019-02-19 | 北京瑞威世纪铁道工程有限公司 | Cement grouting material |
| CN109538240A (en) * | 2018-08-28 | 2019-03-29 | 北京瑞威世纪铁道工程有限公司 | The method for tunnel construction of earth's surface orientation heavy caliber deep hole grouting |
| CN109736845A (en) * | 2019-01-25 | 2019-05-10 | 北京瑞威世纪铁道工程有限公司 | Disturbance displacement compacting grouting construction method |
| CN109882199A (en) * | 2019-01-25 | 2019-06-14 | 北京瑞威世纪铁道工程有限公司 | Rigid mini-valve tube component and its application method |
| CN110259465A (en) * | 2019-06-28 | 2019-09-20 | 中铁二局集团有限公司 | A kind of method that list shield double mode TBM pre-grouting reinforces fault belt |
| CN110617029A (en) * | 2019-09-16 | 2019-12-27 | 中国矿业大学 | Drilling segmented retreating type grouting method |
| CN110792440A (en) * | 2019-11-07 | 2020-02-14 | 中铁二十局集团有限公司 | Construction method of water-rich loess tunnel penetrating through loess towards valley |
| CN110792440B (en) * | 2019-11-07 | 2021-02-05 | 中铁二十局集团有限公司 | Construction method of water-rich loess tunnel penetrating through loess towards valley |
| CN110700842A (en) * | 2019-11-11 | 2020-01-17 | 山东大学 | Advanced grouting reinforcement method suitable for water-rich sand layer section of shield end |
| CN111852515A (en) * | 2020-08-31 | 2020-10-30 | 中铁十六局集团有限公司 | Tunnel stratum pre-reinforcement comprehensive grouting method |
| CN112025972A (en) * | 2020-09-17 | 2020-12-04 | 中州装备制造股份有限公司 | Preparation process of building wall |
| CN113585267A (en) * | 2021-07-23 | 2021-11-02 | 中国水利水电第十六工程局有限公司 | Sleeve valve grouting process |
| CN113882356A (en) * | 2021-10-14 | 2022-01-04 | 中铁隆工程集团有限公司 | Ground grouting reinforcement construction process |
| CN115450217A (en) * | 2022-09-06 | 2022-12-09 | 中国水电基础局有限公司 | Grouting method for perforating and wall breaking grouting in orifice embedded pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106640120B (en) | 2021-10-26 |
| CN106640120B8 (en) | 2022-01-07 |
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Effective date of registration: 20211021 Address after: 101499 room 409, 4th floor, South, 113 Kaifang Road, Huairou District, Beijing Applicant after: BEIJING RUIWEI CENTURY RAILWAY ENGINEERING Co.,Ltd. Address before: 100086 room 103, building 9, West District, 56 Zhichun Road, Haidian District, Beijing Applicant before: Peng Feng |
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| TA01 | Transfer of patent application right | ||
| CI03 | Correction of invention patent |
Correction item: Patentee|Address Correct: Beijing Ruiwei century Railway Engineering Co., Ltd.|101499 room 409, 4th floor, South, 113 Kaifang Road, Huairou District, Beijing False: Peng Feng|100086 room 103, building 9, West District, 56 Zhichun Road, Haidian District, Beijing Number: 44-01 Page: The title page Volume: 37 Correction item: Patentee|Address Correct: Beijing Ruiwei century Railway Engineering Co., Ltd.|101499 room 409, 4th floor, South, 113 Kaifang Road, Huairou District, Beijing False: Peng Feng|100086 room 103, building 9, West District, 56 Zhichun Road, Haidian District, Beijing Number: 44-01 Volume: 37 |
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| CI03 | Correction of invention patent |