CN1865650A - Construction method for push pipe by cooperation of horizontal auger driller and horizontal directional driller - Google Patents
Construction method for push pipe by cooperation of horizontal auger driller and horizontal directional driller Download PDFInfo
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Abstract
The invention relates to a push bench method for using horizontal screw driller and horizontal directional driller. Wherein, it first uses horizontal driller, at one side of receiving well and along the track of tube line, to drill a guide hole to the push bench working well; then connects the drill rod of horizontal direction driller to the drilling head of horizontal screw driller and the screw driller; the horizontal screw driller is synchronously drawn by the horizontal directional driller in the push bench process, to make the tube line move forwards along preset track, to complete accurate tube line. The invention has simple operation, accurate push bench direction, and high working efficiency.
Description
Technical field
The present invention relates to a kind of job practices of underground pipeline, be specifically related to a kind of job practices of utilizing horizontal spiral drilling machine and horizontal directional drilling machine (having another name called the horizontally-guided rig) collaborative work push pipe.
Background technology
Run into the situation that obstructions such as highway, railway and river maybe can't adopt the open cut mode to construct through regular meeting in the pipeline construction, need to adopt the method for non-excavation to pass through these obstructions.The horizontal spiral drilling machine jacking construction more and more is subjected to people's attention as a kind of important mode of passing through, and it does not influence the normal traffic and the navigation in railway, highway, river; Adopt earth pressure balance principle driving not destroy the stratum, no mud emission does not pollute the environment; The high cycle of efficiency of construction is short, and expense is lower; Labour intensity is low.Though being some, shortcoming possesses certain direction control ability, general uncontrollable pipe laying direction, thereby construction precision is limited.It is to creep on the basis of laying-out tube process at traditional pipe jacking method and non-orientable level that horizontal orientation creeps into pipeline installation, introduces modern guiding technique and the pipe laying technology that grows up.The pipe laying rig that it utilizes ground to place along treating that the planned course of pipe laying line is drilled to a pilot hole earlier, enlarges guide hole then, and instrumentation tubes is drawn in the hole, realizes not excavating a kind of advanced technology of pipe laying.Compare with pipe jacking method and to have following outstanding advantage: during the pilot hole construction, direction, the degree of depth and other parameters can be measured by guide instrument, and proofread and correct adjustment according to planned course, so pipe laying precision height, the success rate height.Shortcoming be the pore-forming aperture greater than the pipe laying caliber, can cause surface settlement, influence gravity drainage pipeline absolute altitude.
Summary of the invention
The object of the present invention is to provide a kind of horizontal spiral drilling machine and horizontal directional drilling machine collaborative work pipe jacking construction method, this job practices craft science is reasonable, easy to operate, and the push pipe direction is accurate, high efficiency.
A kind of horizontal spiral drilling machine provided by the invention and horizontal directional drilling machine collaborative work pipe jacking construction method are: at first utilize horizontal directional drilling machine to treat that on received well one side edge the planned course of pipe laying line is drilled to a pilot hole to upper pipe working well, then in active well with the drilling rod of horizontal directional drilling machine and the drill bit of horizontal spiral drilling machine, auger stem connects, horizontal spiral drilling machine is the horizontal directional drilling machine sync pulling in driving push pipe process, pipeline is advanced according to the planned course for the treatment of the pipe laying line of horizontal directional drilling machine pilot hole all the time, finally finish the pipe installation that requires accurate absolute altitude control.
Job practices of the present invention has following technical characterstic:
(1) can use underground pipeline finder existing underground utilities distribution and underground obstacle are surveyed, the prior confirmation subsurface picture, avoiding blindly, construction causes damage.
(2) creep in the process of pilot hole at horizontal directional drilling machine, may detect geology and obstruction situation on the pipeline designs trajectory path, for practicable constructure scheme is formulated in the actual digging jacking of pipeline.
(3) horizontal directional drilling machine and horizontal spiral drilling machine are advanced synchronously, provide pulling force by the planned course direction by the horizontal directional drilling machine drilling rod for horizontal spiral drilling machine drill bit, auger stem, guarantee the accuracy of push pipe direction.
(4) tunneling in the push pipe process at horizontal spiral drilling machine, horizontal directional drilling machine injects the lubricated thixotropic slurry of swell soil drag reduction to the soil body, can reduce pipeline external wall soil body frictional force and reach launching stress and soil pressure evenly.
(5) be adapted at carrying out jacking construction in the stratum such as weak soil, clay, sand, quicksand, powder fine sand, medium sand, coarse sand, only need to change jacking constructions such as steel pipe that the auger stem hinge dragon of different-diameter and saddle seat and saddle type adapter can carry out 305～2000mm diameter, cast iron pipe, concrete reinforced pipe, glass reinforced plastic sand pipe.
(6) horizontal spiral drilling machine adopts detachable design, is convenient to lifting and transportation, and is easy for installation; Earth is transported with going out with fortune by the hinge dragon in the pipe, and the construction plant takies few, high efficiency; Short construction period, personnel are few, and the success rate height is safe and reliable.
(7) in the jacking construction process, can monitor pipeline jacking situation constantly, exceed error range and in time rectify a deviation by the guide probe instrument.
Description of drawings
Fig. 1 bores the work schematic diagram of pilot hole to the upper pipe working well for horizontal directional drilling machine of the present invention in received well one side along the planned course for the treatment of the pipe laying line;
Fig. 2 is the work schematic diagram that horizontal spiral drilling machine of the present invention and horizontal directional drilling machine advance according to the planned course for the treatment of the pipe laying line in driving push pipe process;
Fig. 3 is a process chart of the present invention.
The specific embodiment
Gush with Guangzhou Haizhu District health and happiness below that to cut dirty engineering push pipe section construction be that example specifies the present invention, need to prove, provide embodiment and be in order to illustrate the present invention, rather than in order to limit the scope of the invention.
The first segment general introduction
One. project profile and Scheme Choice
The length and the degree of depth: the pipe-jacking project of this construction section is a DN1000mm steel bar concrete soil pipe, about 120 meters of total length, push pipe thickness of earth-fill cover 3～6m.
Active well, received well: according to plan and in conjunction with on-the-spot actual, active well and received well adopt the wall built-up well construction, C20 concrete back cover construction under water.
Tubing: push pipe special I II grade reinforcing steel concrete bore D=1000mm, pipe thickness t=100mm.The long 2000mm of every pipe joint, concrete strength C50 adopts " F " type interface, and pipe end adopts the 3mm veneer to make liner, and interface tube adopts high-quality watertight rubber circle sealing.
Construction technology is selected: according to this section soil property situation, this push pipe section adopts the inventive method to carry out non-excavation jacking construction.
Two. engineering geological condition
1. site condition
This engineering is positioned at the Haizhu District health and happiness and gushes the west side, and groundwater table mainly is to pass through Zhujiang River middle school sports ground than horn of plenty, and construction must not impact constructional difficulties to the normal teaching of school.
2. formation lithology
According to the geologic information reflection, one lateral movement of push pipe section active well mostly is mud matter coarse sand after the match, and the big mud content of sand grains is few, and the push pipe degree of depth contains a large amount of building wastes in the about 50 meters scopes of received well one side, contains a large amount of concrete block stones, brick slag.
Three. surrounding enviroment, underground utilities situation
This engineering is positioned at the Haizhu District health and happiness and gushes the west side, mainly is to pass through Zhujiang River middle school sports ground, and boundary of works area has been verified no underground utilities.
Four. engineering characteristic difficult point and countermeasure
1. with high content of technology
Non-excavating construction can not estimate that factor is many, and difficulty of construction is bigger, and is with high content of technology.
2. geology is abominable
The jacking section is sandy silt and building waste, has formulated tight technical measures and has prevented the quicksand that leaks between the jack-in process tube coupling, avoids causing that peripheral strata pressure loss causes that peripheral soil body sedimentation is excessive, and causes Zhujiang River middle school sports ground is destroyed.Counter-measure is responsible for construction for needing construction experience abundant construction team and technical force on the one hand, and the technology of jacking is controlled in strictness, really realizes the state of muddy water soil pressure associating balance, realizes dropping to minimum to the influence degree of surrounding enviroment; On the other hand, the test stage of strict control " F " type interface concrete reinforced pipe stops to use the tubing that does not meet design and code requirement, avoids tube coupling bearing aspect the power of top and construction accident appears in the waterproof aspect.
3. the top journey is long
The longest jacking of this project belongs to the long engineering of push pipe jacking distance apart from about 120m, and resistance is big, needs to adopt the thixotropic slurry drag reduction technology, and is with high content of technology.
The second joint jacking construction scheme
In view of existing flat spin bores push pipe and horizontal orientation creeps into the pluses and minuses that two kinds of technologies of pipeline installation exist, this engineering adopts the job practices of horizontal spiral drilling machine and horizontal directional drilling machine collaborative work push pipe, this method at first utilizes horizontal directional drilling machine to treat that on received well one side edge the planned course of pipe laying line is drilled to a pilot hole (as shown in Figure 1) to upper pipe working well, then in active well with the drilling rod of horizontal directional drilling machine and the drill bit of horizontal spiral drilling machine, auger stem connects, horizontal spiral drilling machine is the horizontal directional drilling machine sync pulling in driving push pipe process, pipeline is advanced (as shown in Figure 2) according to the planned course for the treatment of the pipe laying line of horizontal directional drilling machine pilot hole all the time, finally finish the pipe installation that requires accurate absolute altitude control.Among Fig. 1,2,1. horizontal directional drilling machine; 2. received well; 3. planned course; 4. active well; 5. horizontal spiral drilling machine.
One. pipe jacking equipment is selected
(1) selects pipe jacking tunnelling machine
Technical data, construction principle and the structure of U.S. lattice 60-1200 difficult to understand horizontal spiral drilling machine
1. U.S. lattice 60-1200 difficult to understand horizontal spiral drilling machine important technological parameters
Power section:
Motor: Dao Yici BF6M1013 turbocharging water-cooled electricity starts diesel engine
Rated power: 119KW (160 horsepowers)/2300 rotating speeds, continuous load
Torsion: 703 Ns of rice/1400 rotating speeds
Acrotorque: 175,139 Ns of rice/8 rotating speeds
Fuel capacity: 118 liters
Screw drives head: 4 inch six side
Hydraulic system:
Hydraulic pump form: axial flow piston pump, band load sensing, adjustable peak flow
Pressure: 6000psi (41370KPa)
Maximum thrust: 1200000 pounds (5338KN)
Discharge capacity: 144 liters/minute
Hydraulic cylinder: 4,8 cun cylinder diameter * 35 cun stroke weight
Main frame base: 5.448 tons
Main frame power section: 3.132 tons
Main orbit: 2.785 tons
Advancing the track (single): 2.077 tons
2. the flat spin construction principle of boring
In the work well of construction one side, horizontal spiral drilling machine is installed, there is firm solid baffle walls at the rear portion of rig, adjusting direction begins to creep into, the limit rotary drilling is the jacking sleeve pipe in front, the earth that bit cutting gets off is delivered to the mud mouth place by the rotation of hinge dragon in the sleeve pipe, discharges outside the hole, along with earth constantly is discharged from outside the hole with equipment, sleeve pipe is also constantly headed in the soil, behind first sleeve pipe of jacking, return rig, butt joint hinge dragon, assembling (welding) second sleeve pipe, continue to creep into repeatable operation like this, the 3rd pipe of jacking, the 4th pipe, until creeping into specific length, pipeline passes through and finishes.
3. the horizontal spiral drilling machine structure constitutes
Drilling system: be made up of drill bit, hinge dragon, clutch speed changer, clutch speed changer drives the hinge dragon, drill bit rotates, the bit cutting stratum, and the hinge dragon is sent to drilling cuttings outside the hole, makes the stratum pore-forming.
Drill bit is divided into first-class three kinds of earth drill bit, mud stone drill bit, rotary rock drill, earth drill bit and mud stone drill bit be general install fly cutter arranged, adopt radial type, fly cutter is opened when just changeing, and the drill bit rotation makes diameter greater than the cover external diameter of pipe, to form certain backbreaking, alleviate the frictional resistance of outer wall and soil, the counter-rotating fly cutter is regained, and the diameter of drill bit is less than casing inner diameter, and the installation group is to sleeve pipe, hinge dragon so that rig falls back.
The jacking system: form by hydraulic cylinder, hydraulic pump, hydraulic oil container, identical with the jack of traditional pipe jacking method, be used for sleeve pipe is headed in the hole of excavation.
Dynamical system: comprise motor, transmission device, fuel tank etc., for digging system and jacking system provide power.
Bushing adapter: every kind of specification sleeve pipe is joined different bushing adapters, and its effect is to block sleeve pipe, guarantees that sleeve pipe is concentric with Power Available Shaft.
Saddle seat and saddle type adapter: saddle seat is positioned at the front end of rig track, is used for carrying the sleeve pipe of maximum configured, and the saddle type adapter is fixed on the saddle seat, is used for the little sleeve pipe of bearing ratio maximum configured size.
Guide rail: divide main guide rail (long 4 meters) and add long guideway (long 3 meters), main guide rail adds long guideway and is connected with bolt with main guide rail all the time as the decline of track, if when passing through sleeve pipe long just need connection two or three add long guideway.
(2) guiding and mud system
Adopt the brave and fierce D75 of the U.S. * 100 type horizontal directional drilling machines to provide guiding and the lubricated service of mud drag reduction for this jacking construction.
1. construction equipment and important technological parameters
The brave and fierce D75 of the U.S. * 100 type horizontal directional drilling machines are products that the brave and fierce Engineering Co., Ltd of the U.S. designs for the pipeline of laying medium caliber and middle and long distance engineering specially.This machine is the rig of Electronic Control full hydraulic drive, has powerful motivation, advanced person's electronic system.Can lay the following various tubing pipelines of diameter (800mm); But more than 600 meter of disposable tubing represented the performance and the efficient of brand-new generation horizontal directional drilling machine.The maximum slide force of this equipment is 36t, and peak torque is 13.6KN.m, and the equipment peak power is 138KW.Horizontal orientation drills machine and mainly forms by passing through main frame, dynamical system, mud system, direction controlling system and drilling tool five major parts, mud system mainly is made up of mud charging system, mud stirring system, mud veclamation system and supporting power section, and control is to the guide probe instrument of the new E clipse band Remote Control Indicator that adopts U.S. DCI company to produce.
Important technological parameters sees the following form.
| Parameter | Model | Maximum pipe laying diameter (mm) | Maximum pull-back forces (t) | Maximum feeds power (t) | Peak torque (N.m) | The longest pipe laying distance (m) |
| Index | D75×100 | 800 | 36 | 36 | 13588 | 600 |
Two. the explanation of jacking pipe construction process
1. process chart of the present invention is seen Fig. 3.
2. master operation
A, pipeline detection: use the RD400 of Radiodetection Limited underground pipeline finder existing line distribution and underground obstacle are surveyed, and rendering pipeline laying construction plan view.
B, measurement unwrapping wire: require to determine the pipe laying circuit according to design and construction drawing and Party A.Ground level, underground utilities are checked, and distinguishing mark is set.
C, guiding are crept into: it is the most important phase of pipe laying construction that guiding is crept into, and it has determined the final position of pipeline installation.Horizontal directional drilling machine is marched into the arena, the excavation working pit, then according to design scheme, the new E clipse that utilizes U.S. DCI company to produce is with the guide probe instrument of Remote Control Indicator to carry out the pilot hole construction, accomplish the volumes of surveying more in creeping into, guarantee that the pilot hole each point reaches designing requirement.If the part of boring exceeds error range, should draw back drilling rod and carry out creeping into of leg portion again.When the exit position meets the demands, take off the construction that drill bit carries out next procedure.
D, horizontal directional drilling machine and horizontal spiral drilling machine are advanced synchronously: after finishing guide hole and creeping into, change special-purpose transfer connector, the probe chamber is connected with horizontal spiral drilling machine drill bit, auger stem, in the process of horizontal spiral drilling machine digging jacking, provide pulling force by the horizontal directional drilling machine drilling rod for horizontal spiral drilling machine drill bit, auger stem, to guarantee the accuracy of push pipe direction by the planned course direction.For reaching the purpose of launching stress and soil pressure, lubricated push pipe outer wall, cooling drill bit evenly, need to use thixotroping drag reduction bentonite slurry.Should monitor and keep technical datas such as mud viscosity, proportion, solid concentration in the work progress.
3. the selection of production tube
This engineering push pipe adopts F shaped steel mouthing reinforced concrete pipe, and interface adopts the wedge-shaped rubber circle, and this interface shape is very reliable.Selection dimensional accuracy and sealing all adhere to specification.
4. push pipe working pit facility
The foundation ditch guide rail should have enough strength and stiffness.This engineering foundation ditch guide rail is that equipment imported with original packaging can guarantee to satisfy rigidity and requirement of strength.Pre-embedded steel slab in advance on the mat foundation, the position of pre-embedded steel slab and foundation ditch guide rail match, so that guide rail welds with it.Anchor bar on the pre-embedded steel slab will weld and have enough anchoring strengths, after guide rail is laid, also should support with shaped steel in two sides, and concreting more in case of necessity guarantees that guide rail under the condition that is impacted, do not walk about, and is indeformable.
The pressure-bearing wall is the reacting wall that bears and transmit whole tops power, more should have enough strength and stiffness, and the safe enough degree is arranged.The pressure-bearing wall design elder generation of this engineering is flat with concrete casting, and the back with δ=70 steel plates, serves as a contrast a full hall 50mm deal board, the area H * B=3.4 * 3.4m of pressure-bearing wall by steel plate between steel plate and concrete plane.
The hole antipriming: in the outside, hole, steel is set seal up a door, steel is sealed up a door and is adopted the 16# channel-section steel, and solid matter is arranged, in the inboard, hole,, make reinforced concrete wall, the wall of laying bricks again earlier according to designing requirement, when jacking is opened the door, abolish reinforced concrete wall and brick wall, do not stay hidden danger with pneumatic pick.
5. layout
This engineering adopts the 16T mobile crane, is carrying out totally-enclosed isolation, and builds necessary production temporory structure.Keep civilization, safety and the health of job site clean and tidy.
6. maximum jacking force and restriction thereof
Hydraulic system maximum jacking force in this engineering master top allows the setting of top power according to push pipe;
To the maximum jacking force F=3000KN of DN1000;
Restriction is the pressure of controlled hydraulic system;
Because the system pressure of restriction is less, so the fault of hydraulic system will reduce the also corresponding raising of the reliability of push pipe greatly.When the pressure of hydraulic system reaches F, main top hydraulic control panel will be reported to the police, to satisfy the measure of the maximum top of restriction power.
The 3rd joint construction summarize
Construction equipment was marched into the arena on May 30th, 2006, mainly finished every preparation before June 7, and the formal construction of beginning on the 8th was finished 120 meters of jackings on 14th, and every index satisfies owner's requirement.The jacking pressure of 120 meters long DN1000 concrete reinforced pipes only is 1000psi (about 92 tons), but 30 meters of normal condition following every day of jackings.Facts have proved that this job practices craft science is reasonable, easy to operate, the push pipe direction is accurate, high efficiency.
Claims (5)
1. horizontal spiral drilling machine and horizontal directional drilling machine collaborative work pipe jacking construction method, it is characterized in that: at first utilize horizontal directional drilling machine (1) to treat that on received well (2) one sides edge the planned course (3) of pipe laying line is drilled to a pilot hole to upper pipe working well (4), then in active well (4) with the drilling rod of horizontal directional drilling machine (1) and the drill bit of horizontal spiral drilling machine (5), auger stem connects, horizontal spiral drilling machine (5) is horizontal directional drilling machine (1) sync pulling in driving push pipe process, pipeline is advanced according to the planned course for the treatment of the pipe laying line (3) of horizontal directional drilling machine (1) pilot hole all the time, finally finish the pipe installation that requires accurate absolute altitude control.
2. job practices according to claim 1 is characterized in that: before horizontal directional drill machine drill pilot hole, use underground pipeline finder existing underground utilities distribution and underground obstacle are surveyed.
3. job practices according to claim 1 is characterized in that: the drilling rod of horizontal directional drilling machine is connected with drill bit, the auger stem of horizontal spiral drilling machine by transfer connector, probe chamber.
4. job practices according to claim 1 is characterized in that: in driving push pipe process, application-oriented detection instrument is monitored pipeline jacking situation in real time at horizontal spiral drilling machine.
5. job practices according to claim 1 is characterized in that: in driving push pipe process, horizontal directional drilling machine injects the lubricated thixotropic slurry of swell soil drag reduction to the soil body at horizontal spiral drilling machine.
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| CNB2006100360479A CN100410485C (en) | 2006-06-22 | 2006-06-22 | Construction method for push pipe by cooperation of horizontal auger driller and horizontal directional driller |
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| CNB2006100360479A CN100410485C (en) | 2006-06-22 | 2006-06-22 | Construction method for push pipe by cooperation of horizontal auger driller and horizontal directional driller |
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| CN1865650A true CN1865650A (en) | 2006-11-22 |
| CN100410485C CN100410485C (en) | 2008-08-13 |
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