CN108150101A - A kind of pipeline three-dimensional construction method for crossing - Google Patents
A kind of pipeline three-dimensional construction method for crossing Download PDFInfo
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- CN108150101A CN108150101A CN201711401715.8A CN201711401715A CN108150101A CN 108150101 A CN108150101 A CN 108150101A CN 201711401715 A CN201711401715 A CN 201711401715A CN 108150101 A CN108150101 A CN 108150101A
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- 238000010276 construction Methods 0.000 title claims abstract description 52
- 238000005553 drilling Methods 0.000 claims abstract description 115
- 239000000523 sample Substances 0.000 claims abstract description 40
- 239000007858 starting material Substances 0.000 claims abstract description 19
- 238000012790 confirmation Methods 0.000 claims abstract description 8
- 238000002360 preparation method Methods 0.000 claims abstract description 3
- 230000004888 barrier function Effects 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 229910000278 bentonite Inorganic materials 0.000 claims description 11
- 239000000440 bentonite Substances 0.000 claims description 11
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 11
- 239000002689 soil Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 235000009508 confectionery Nutrition 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-N sodium;hydron;carbonate Chemical compound [Na+].OC(O)=O UIIMBOGNXHQVGW-UHFFFAOYSA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 16
- 235000012216 bentonite Nutrition 0.000 description 8
- 238000009412 basement excavation Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
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- 238000003860 storage Methods 0.000 description 2
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- 241000209202 Bromus secalinus Species 0.000 description 1
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Classifications
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- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/10—Correction of deflected boreholes
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
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- Mining & Mineral Resources (AREA)
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- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
One aspect of the present invention discloses a kind of constructing device passed through for pipeline three-dimensional：Mainly include：Steering equipment, drilling machine, starter and drilling rod；Another aspect of the present invention discloses a kind of pipeline three-dimensional construction method for crossing：Step includes：(1) preparations before constructing, (2) drilling, (3) probe location confirmation, (4) drilling trace guiding, (5) starter are unearthed, (6) reaming and hauling pipe.It is passed through using three-dimensional, horizontal plane and vertical plane can be thus achieved while borrow and turn to pass through angle, the present invention solve current horizontal directional drilling can only be carried out in two dimensional surface angle borrow turn, the problem of crossing length is long, and construction site requirement is high, and engineering practical operation difficulty is big, it has been obviously improved construction quality, simultaneously because construction path is short, material and energy consumption, energy-saving and emission-reduction can also be reduced.
Description
Technical field
The present invention relates to underground construction field more particularly to a kind of pipeline three-dimensional construction method for crossing.
Background technology
With society, expanding economy, China's city size constantly expands, infrastructure also constantly improve, the confession in city
The underground pipeline layouts quantity such as water, combustion gas, electric power, communication, oil unprecedentedly increases, and road is caused to dig the hurried rising of road excavated volume.
But excavation construction on the one hand easily obstruction, generate security risk and destroy urban environment；On the other hand municipal administration is caused to set
The repetition maintenance applied, waste are difficult to estimate.It is for this purpose, imperative with a kind of new underground pipeline project construction method.It is non-to open
The appearance of digging technology solves the problems, such as this.
No-dig technique horizontal directional drilling construction technology be based on the pipeline laying technology for not destroying ground structure, it is substantially former
Add a sensing element when reason is construction before drilling rod, by the Deep space tracking to sensing element, accurately control starter
Trend and depth, make its travel line meet the bending radius and yield strength for waiting to lay the line with drilling rod in itself, until being oriented to
Drill bit is unearthed by precalculated position.Horizontal directional drilling construction technology is generally in three steps：Pilot hole drilling returns and expands, returns and drag.It bores
Machine creeps into pilot hole by preset geometric locus in Different Strata and depth, then uses back the reaming of expansion device to required hole
Diameter finally will be completed to pass through in pipeline returning to duct.
Modern no-excavation construction method, originating from developed country, mainly there is the U.S., Britain and day the end of the sixties in 19th century
This etc..Wherein the U.S. is a horizontally oriented drilling technology using most；In the U.S., industrial gas oil pipeline is frequently necessary to lead to
Private manor and environmentally sensitive area are crossed, this causes Horizontal Directional Drilling to be developed.The European countries such as Britain are using pipe
Line recovery technique is more, and Japan mainly uses micro-tunneling and pipe-jacking technology.
The research and development work of China's no-excavation construction method and equipment is started late, the late 1980s,
Due to do not allow digging laying underground utilities engineering quantity increase and the development of each big city reconstruction and extension project, China
Start to introduce and manufacture experimently all kinds of non-excavating construction equipment, so as to promote the independent research work of no-excavation construction method and equipment
Make.As one kind of no-excavation construction method, horizontal directional drilling construction technology is in China's non-excavation laying underground pipeline construction
It is with fastest developing speed in method, technology is most advanced, equipment is most perfect, most widely used, in occupation of leading in trenchless technology field
Status.
Horizontal Directional Drilling, can be certain bent as a construction technology most active in current trenchless technology
Barrier is got around in rate radius, has the characteristics that speed of application is fast, precision is high, environmentally friendly.In horizontal positioning drill guide hole drill
Into when, according to existing code requirement, it is impossible to be carried out at the same time angular transformation in horizontal and vertical direction, two dimensional surface can only be carried out
Interior passes through.But Urban Space is narrow, and road is crisscross.City-building also results in underground sky while growing rapidly
Between resource anxiety.Passing through for underground utilities inevitably avoids more and more underground obstacles and underground structure.
If horizontal directional drilling can only carry out angle by means of turn in two dimensional surface, crossing length will be longer, the requirement constructed to place
Also by higher, the practical operation difficulty of engineering can also increase.Similar situation is encountered in real work, busy location,
Horizontal directional through-passing is needed, but place can not meet the requirement of crossing length.
The construction of three dimensions horizontal directional drill has had ripe condition.First, applying in flexible ducts such as PE pipes, silicone tubes
The benefit of three-dimensional construction is embodied in work more and more；Second is that horizontal directional drill construction has been widely recognized, work of constructing
Skill also tends to maturation.Thus in the case where improving construction quality, the main trend of energy-saving and emission-reduction, it is necessary to which research level Directional Drilling three-dimensional is worn
More technology.
Break through two dimension limitation realize three-dimensional pass through --- i.e. horizontal plane and vertical plane simultaneously borrow turn --- can be preferable
Ground solves the problems, such as this.On the one hand it meets the initial design philosophy of crossing construction, that is, keeps away obstacle object, by the scope of barrier
By the two-dimensional expansion of plane to three-dimensional, the use scope and practicability of this technology are expanded, broader market can be opened up；Separately
On the one hand, borrowing successively for horizontal and vertical direction turns to realize simultaneously in three dimensions in two dimension, this also just shortens pipeline
Length is the condition provided convenience of constructing in city, also complies with current and long-range development trend.
Therefore, those skilled in the art is dedicated to developing a kind of pipeline three-dimensional construction method for crossing.
Invention content
In view of the drawbacks described above of the prior art, the technical problems to be solved by the invention be how one kind is provided can be
The pipeline three-dimensional construction method for crossing of barrier is got around in safe distance.
To achieve the above object, the first aspect of the present invention provides a kind of constructing device passed through for pipeline three-dimensional：
Mainly include：Steering equipment, drilling machine, starter and drilling rod, wherein,
Steering equipment includes sensor, receiver and remote display, and sensor is probe；
Drill pipe diameter is 89mm, and length is 4500~6100mm, and slenderness ratio is 50.6~68.5, the connection side between drilling rod
Formula is is threadedly coupled；
The rotation pump output pressure of drilling machine is 3000 pounds/square inch, and it is 5100 that system pressure is dragged in the propulsion of drilling machine/return
Pound/square inch, the rotary system output pressure of drilling rod is 4750 pounds/square inch；The mud system pressure of drilling rod is 5900
Pound/square inch；
Starter is fixedly mounted on the drilling rod with front end, and probe is mounted in starter.
The second aspect of the present invention provides a kind of pipeline three-dimensional construction method for crossing：Include the following steps：
(1) prepare before construction；
(2) it creeps into；
(3) probe location confirmation；
(4) drilling trace is oriented to；
(5) starter is unearthed；
(6) reaming and hauling pipe, wherein；
In step (3), it can select to confirm the position of probe using steering equipment in adjunction drilling rod；
In step (3), when apart from the sum of barrier minimum safe distance and maximum reaming radius≤1m, in order to meet
Three-dimensional passes through region and realizes vertical plane and horizontal plane while by means of turn, often creeps into the 1/4 of run of steel, is confirmed using steering equipment and visited
The position of stick, maximum reaming radius are 1.2~1.5 times of pipe diameter to be installed, and minimum safe distance is true when being detail design
Minimum range of the fixed pipeline outer wall to be installed apart from barrier；
In step (3), when being between 1m and 2m apart from the sum of barrier minimum safe distance and maximum reaming radius,
Turn to meet to pass through region in three-dimensional and realize vertical plane and horizontal plane while borrow, often creep into the 1/2 of run of steel, use steering
Equipment confirms the position of probe；
In step (3), when apart from the sum of barrier minimum safe distance and maximum reaming radius are between >=2m when, be
Meet and pass through region in three-dimensional and realize vertical plane and horizontal plane simultaneously by means of turning, often piece drilling rod of drilling, true using steering equipment
Recognize the position of probe；
In step (4), when needing to adjust deviation δ≤0.2m of drilling trace, using the method for adjustment of non-pumpback drilling rod；
In step (4), when the deviation for adjusting drilling trace is needed to be between 0.2m and 0.5m, if drilling rod slenderness ratio
<60, the mode that pumpback is no less than 6 drilling rods is taken to adjust guiding, if drilling rod slenderness ratio >=60, pumpback is taken to be no less than 5
The mode of the drilling rod adjusts guiding；
In step (4), when needing to adjust deviation >=0.5m of drilling trace, pumpback is taken to be no less than the side of 10 drilling rods
Formula adjustment is oriented to.
Further, when confirming the position of probe, the drilling tool in drilling must stop turning round completely.
Further, before spudding in, drilling machine test running determines that each section carries out further drilling operation after working well.
Further, before spudding in, starter is directed toward 12 o'clock direction.
Further, by probe location confirmation, after every drilling rod completes drilling, clock face is adjusted at 12 points.
Further, when first drilling rod buries, by the way of the low pressure slow-speed of revolution, stablize position of burying, meet and bury
Further implement drilling behind inclination angle.
Further, realize starter in horizontal plane and vertical by the cycle of step (2), step (3) and step (4)
Face by means of turn, gets around barrier simultaneously.
Further, prepare to be divided into as following steps in step (1), before the construction：1. physical prospecting；2. check pipeline；③
Scene positioning；4. surveying setting-out；5. excavate working pit；6. installing drill bit and probe, probe is calibrated；7. Slurry confection.
Further, step 5. in, working pit depth is not shallower than 1.5 meters and digs to undisturbed soil.
Further, step 7. in, mud is formulated by drill-in fluid and bentonite, and per 1000L drill-in fluids, cooperation is containing 50
~150kg bentonites.
Further, the drill-in fluid includes soda or sodium bicarbonate, and pH value is 8~10.
Further, if environment is clay soil property, per 1000L drill-in fluids cooperation bentonite containing 50~75kg.
Further, if environment is sand soil property, per 1000L drill-in fluids cooperation bentonite containing 100~150kg.
Technique effect：
1st, angle can only be carried out by means of turn in two dimensional surface by solving current horizontal directional drilling, and crossing length is long, applies
The problem of work site requirements is high, and engineering practical operation difficulty is big；
2nd, construction quality is improved；
3rd, construction route segment, can also reduce material and energy consumption, energy-saving and emission-reduction.
The technique effect of the design of the present invention, concrete structure and generation is described further below with reference to attached drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Description of the drawings
Fig. 1 is the drilling trace schematic top plan view of the preferred embodiment of the present invention；
Fig. 2 is the drilling trace front schematic view of the preferred embodiment of the present invention；
Fig. 3 is the drilling trace side schematic view of the preferred embodiment of the present invention.
Specific embodiment
Embodiment 1
Pipeline three-dimensional crossing construction equipment mainly includes：Steering equipment, drilling machine, starter and drilling rod, between drilling rod
Connection mode is is threadedly coupled, and steering equipment includes sensor, receiver and remote display, and sensor is probe, drilling machine
It is 3000 pounds/square inch to rotate pump output pressure, and it is 5100 pounds/square inch that system pressure is dragged in the propulsion of drilling machine/return, drilling rod
Rotary system output pressure be 4750 pounds/square inch；The mud system pressure of drilling rod is 5900 pounds/square inch, is oriented to
Drill bit is fixedly mounted on the drilling rod with front end, and probe is mounted in starter.
Preparation process includes before pipeline three-dimensional crossing construction：
1. physical prospecting, owner's requirement, the Electromagnetic Survey of Underground Pipelines pipe position that commission has professional qualification carry out physical prospecting work to construction area
Make；
2. checking pipeline, with reference to Use of Geophysical Data and construction drawing scene verification pipeline, pipeline is verified ranging from：Pipe position center
Each 20 meters of line both sides, totally 40 meters wide, such as crossing or pipeline complex region, range increases to each 50 meters of pipe position center line both sides, altogether
It is 100 meters wide；Length be, bury a little it is each extension 50 meters；
3. scene positioning measures the modes such as buried depth of pipeline and direction by using small probe and carries out live positioning and measurement deeply
Degree；
4. by drawing or cross-post, outlet pipe position is demarcated by the way of white line mark for surveying setting-out；For can not graticule ground
The mark pole brand of Duan Caiyong spacing≤20 meter；
5. excavating working pit, a certain amount of mud storage requirement will be met by entering to bore point working pit, if mud amount is more than working pit
Storage aside separately can be dug working pit according to field condition or be transported outward using groove tank car timing；It is more than 1.5 meters of work to depth
It cheats, plays support or live slope processing；
6. installing drill bit and probe, probe, the built-in new battery of probe before construction are calibrated, probe is mounted in starter,
Ensure that drill bit water route is unobstructed, the intact probe according to different model of probe is calibrated, and ensures the accurate of steering track and sensing
The correctness of clock face residing for device；
7. Slurry confection, formation condition configuration mud, mud are formulated by drill-in fluid and bentonite, are crept into per 1000L
Liquid coordinates the bentonite containing 50~150kg；By adding soda or sodium bicarbonate, the pH value of drill-in fluid is adjusted, the pH value of drill-in fluid is 8
~10, if environment is clay soil property, per 1000L drill-in fluids cooperation bentonite containing 50~75kg；If environment is sand soil property, often
1000L drill-in fluids coordinate the bentonite containing 100~150kg；If encountering other soil properties, allocated according to actual conditions.
Drilling trace such as Fig. 1 of the present invention shown in 2,3, by constantly detecting the position of probe in work progress, confirms and bores
Into track, turn so that starter is borrowed simultaneously in horizontal plane and vertical plane, the specific step of pipeline three-dimensional construction method for crossing
Suddenly it is：
(1) drilling machine test running, before spudding in, drilling machine test running determines that each section carries out further drilling behaviour after working well
Make；
(2) creep into, first drilling rod bury drilling when, the method that should take light pressure slow-speed is stablized a position of burying, is met
Design, which is buried, can implement to creep into behind inclination angle, and drill bit is adjusted before spudding in and is directed toward 12 directions, and wherein run of steel is 6.1m, diameter
89mm, slenderness ratio 68.5；
(3) probe location confirmation confirms probe position, when confirming the position of probe, the brill in drilling using steering equipment
Tool must stop turning round completely, can select to confirm the position of the probe in adjunction drilling rod；
3.1 when apart from the sum of barrier minimum safe distance and maximum reaming radius≤1m, wear to meet in three-dimensional
More region realizes that vertical plane and horizontal plane by means of turn, are often crept into the 1/4 of run of steel, the position of probe confirmed using steering equipment simultaneously
It puts, maximum reaming radius is 1.2~1.5 times of pipe diameter to be installed, and what minimum safe distance determined when being detail design treats
Minimum range of the pipe laying outer wall apart from barrier；
3.2 apart from the sum of barrier minimum safe distance and maximum reaming radius when being between 1m and 2m, in order to full
Foot passes through region in three-dimensional and realizes vertical plane and horizontal plane while by means of turn, and often the 1/2 of drilling run of steel, true using steering equipment
Recognize the position of probe；
3.3 when apart from the sum of barrier minimum safe distance and maximum reaming radius are between >=2m when, in order to meet
Region is passed through in three-dimensional and realizes vertical plane and horizontal plane while by means of turn, often creeps into a drilling rod, steering equipment is used to confirm probe
Position；
3.4 pass through probe location confirmation, after every drilling rod completes drilling, clock face are adjusted at 12 points.
(4) drilling trace is oriented to, and judges formation variation and drilling resistance according to the variation of drilling parameter in drilling process
Situation is in time adjusted drilling trace and carries out guiding construction note, during guiding, to lack into diligent measurement, according to brill
The deviation that hole occurs with reference to the timely deflecting adjustment guide track of formation condition, pays special attention to adjust too anxious or adjustment excessively,
" S " type to be avoided to adjust back and forth when especially adjusting in the horizontal direction；
4.1 when needing to adjust deviation δ≤0.2m of drilling trace, using the method for adjustment of non-pumpback drilling rod；
4.2, when the deviation for adjusting drilling trace is needed to be between 0.2m and 0.5m, take pumpback to be no less than described in 5
The mode of drilling rod adjusts guiding；
4.3, when needing to adjust deviation >=0.5m of drilling trace, take the mode that pumpback is no less than 10 drilling rods to adjust
It is oriented to；
Realize that the drill bit is borrowed simultaneously in horizontal plane and vertical plane by the cycle of step (2), step (3) and step (4)
Turn, get around barrier.
(5) starter is unearthed, and guiding terminates, while spot-check scene and be oriented to ground identification point.
(6) reaming and hauling pipe, den bohrkopf abbauen, install back expansion device, carry out reaming, start back to expand, using returning expansion step by step, maximum
Reaming radius is 1.2~1.5 times of pipe diameter to be installed, while mud flow rate when having recorded reaming, pressure, towing tension, torsion
Square etc.；Beginning pipeline time drags after reaming aperture reaches requirement, and soldered pipeline should be checked by returning before dragging, it is ensured that pipeline is long
Degree, weld seam, anticorrosive quality etc. meet the requirements, and pigging, work pressure test are qualified.
Embodiment 2
Use drilling rod of the length for 4.5m, drill pipe diameter 89mm, slenderness ratio 50.6, in work progress, pipeline three-dimensional is worn
More (4) step of construction method, the adjustment warping procedure that drilling trace is oriented to become：
4.1 when needing to adjust deviation δ≤0.2m of drilling trace, using the method for adjustment of non-pumpback drilling rod；
4.2, when the deviation for adjusting drilling trace is needed to be between 0.2m and 0.5m, take pumpback to be no less than described in 6
The mode of drilling rod adjusts guiding；
4.3, when needing to adjust deviation >=0.5m of drilling trace, take the mode that pumpback is no less than 10 drilling rods to adjust
It is oriented to.
The preferred embodiment of the present invention described in detail above.It should be appreciated that the ordinary skill of this field is without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. a kind of constructing device passed through for pipeline three-dimensional, which is characterized in that the constructing device includes：Steering equipment is bored
Machine, starter and drilling rod, wherein,
The steering equipment includes：Sensor, receiver and remote display, the sensor are probe；
The drill pipe diameter is 89mm, and length is 4500~6100mm, and the connection mode between the drilling rod is is threadedly coupled；
The rotation pump output pressure of the drilling machine is 3000 pounds/square inch, and the propulsion of the drilling machine/return drags the system pressure to be
5100 pounds/square inch, the rotary system output pressure of the drilling rod is 4750 pounds/square inch；The mud system of the drilling rod
Pressure of uniting is 5900 pounds/square inch；
The starter is fixedly mounted on the drilling rod with front end, and the probe is mounted in the starter.
2. a kind of pipeline three-dimensional construction method for crossing, which is characterized in that include the following steps：
(1) prepare before construction；
(2) it creeps into；
(3) probe location confirmation；
(4) drilling trace is oriented to；
(5) starter is unearthed；
(6) reaming and hauling pipe, wherein
In step (3), it can select to confirm the position of the probe using the steering equipment in drilling rod described in adjunction；
In step (3), when apart from the sum of barrier minimum safe distance and maximum reaming radius≤1m, in order to meet in three-dimensional
It passes through region and realizes vertical plane and horizontal plane while borrow and turn, often creep into the 1/4 of the run of steel, it is true using the steering equipment
Recognize the position of the probe, the maximum reaming radius is 1.2~1.5 times of pipe diameter to be installed, the minimum safe distance
The minimum range of the barrier with a distance from the pipeline outer wall to be installed to be determined during detail design；
In step (3), when the sum of the minimum safe distance apart from the barrier and the maximum reaming radius are in 1m
When between 2m, turn to meet to pass through region in three-dimensional and realize vertical plane and horizontal plane while borrow, it is long often to creep into the drilling rod
The 1/2 of degree confirms the position of the probe using the steering equipment；
In step (3), when the sum of the minimum safe distance apart from the barrier and the maximum reaming radius in >=
When between 2m, turn to meet to pass through region in three-dimensional and realize vertical plane and horizontal plane while borrow, often creep into a drilling rod,
The position of the probe is confirmed using the steering equipment；
In step (4), when needing to adjust deviation δ≤0.2m of the drilling trace, using the method for adjustment of non-pumpback drilling rod；
In step (4), when the deviation for adjusting the drilling trace is needed to be between 0.2m and 0.5m, if the drilling rod is long
Thin ratio<60, the mode that pumpback is no less than 6 drilling rods is taken to adjust guiding, if drilling rod slenderness ratio >=60, take back
The mode for taking out no less than 5 drilling rods adjusts guiding；
In step (4), when needing to adjust deviation >=0.5m of the drilling trace, pumpback is taken to be no less than 10 drilling rods
Mode adjust guiding.
3. a kind of pipeline three-dimensional construction method for crossing as claimed in claim 2, which is characterized in that in step (3), described in confirmation
During the position of probe, the drilling tool in drilling must stop turning round completely.
4. a kind of pipeline three-dimensional construction method for crossing as claimed in claim 2, which is characterized in that in step (4), by described
Clock face after the every drilling rod completes the drilling, is adjusted at 12 points by probe location confirmation.
5. a kind of pipeline three-dimensional construction method for crossing as claimed in claim 2, which is characterized in that in step (2), before spudding in,
The drill bit is directed toward 12 o'clock direction.
6. a kind of pipeline three-dimensional construction method for crossing as claimed in claim 2, which is characterized in that first drilling rod buries
When, by the way of the low pressure slow-speed of revolution, stablize position of burying, further implement drilling after meeting inclination angle of burying.
7. a kind of pipeline three-dimensional construction method for crossing as claimed in claim 2, which is characterized in that pass through step (2), step
(3) and the cycle of step (4) realizes that the starter, simultaneously by means of turn, gets around barrier in horizontal plane and vertical plane.
8. a kind of pipeline three-dimensional construction method for crossing as claimed in claim 2, which is characterized in that in step (1), the construction
Preceding preparation is divided into as following steps：1. physical prospecting；2. check pipeline；3. scene positioning；4. surveying setting-out；5. excavate working pit；⑥
The drill bit and the probe are installed, calibrate the probe；7. Slurry confection.
9. a kind of pipeline three-dimensional construction method for crossing as claimed in claim 8, which is characterized in that step 5. in, the work
Hole depth is not shallower than 1.5 meters and digs to undisturbed soil.
10. a kind of pipeline three-dimensional construction method for crossing as claimed in claim 8, which is characterized in that step 7. in, the mud
It is formulated by drill-in fluid and bentonite, drill-in fluid cooperation is containing bentonite described in 50~150kg, the drilling described in per 1000L
Liquid includes soda or sodium bicarbonate, and pH value is 8~10, if environment is clay soil property, per drill-in fluid cooperation described in 1000L containing 50~
Bentonite described in 75kg, if environment is sand soil property, drill-in fluid cooperation is containing bentonite described in 100~150kg described in per 1000L.
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| CN113756721A (en) * | 2020-05-29 | 2021-12-07 | 宁波金地电子有限公司 | Method for eliminating inclination angle accumulation error of drilling system |
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Address after: No.162 Weifang Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 200122 Patentee after: Shanghai Energy Construction Group Co.,Ltd. Address before: No.162 Weifang Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 200122 Patentee before: SHANGHAI MUNICIPAL GAS NO.2 PIPELINES ENGINEERING Co.,Ltd. |
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