CN103292035B - Construction method of underground pipe jacking - Google Patents
Construction method of underground pipe jacking Download PDFInfo
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- CN103292035B CN103292035B CN201310198767.5A CN201310198767A CN103292035B CN 103292035 B CN103292035 B CN 103292035B CN 201310198767 A CN201310198767 A CN 201310198767A CN 103292035 B CN103292035 B CN 103292035B
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Abstract
The invention provides a construction method of underground pipe jacking. The construction method includes a) arranging control points at end points of each road segment in a same straight line; b) producing and arranging a working well; c) mounting a guide rail and a jacking device; d) mounting a point unit, and allowing extension of the pointed direction of the point unit to be located in same plane with the straight where the control points located; e) mounting an orientation unit, hoisting two first-segment pipelines, allowing the orientation unit to receive the oriented direction from the point unit, starting the jacking device to jack the two first-segment pipelines in opposite directions, and excavating at the front ends of the first-segment pipelines; f) hoisting a pipeline, connecting the pipeline with a front pipeline, allowing the orientation unit to receive the pointed direction of the point unit, starting the jacking device to jack the pipeline in the opposite direction, and excavating at the front ends of the first-segment pipelines; g) repeating step f till the pipeline is mounted completely, and allowing the pipeline to be a joint unit between the two first-segment pipelines.
Description
Technical field
The present invention relates to underground pipeline construction method, specifically, relate to the method for construction of the two-way jacking of a kind of underground pipe-driving.
Background technique
Under ground piping is laid on underground for carrying the pipeline of gas, liquid or solid, such as underground intake pipe, waste pipe, gas pipe or telecommunication cable pipe etc.In the process of laying under ground piping, the traffic fortress in city may be in, cannot carry out digging direct-buried and truss built on stilts by time, adopt pipe-jacking technology more.
Pipe-jacking technology is a kind of no-dig technique driving formula pipelaying techniques.Do not need to excavate ground, ground structure and underground utility can be passed through, do not need to block traffic, little on the impact arround construction.Fig. 1 is schematic diagram, shows the method for construction of push pipe in prior art.As shown in Figure 1, the initial point position of pipeline is determined before construction, perpendicular to floor manufacture active well 100 and received well 200, in active well 100, arrange reacting wall 110 etc., the jacking device 300 such as jack 310, top iron 320 is installed, lifting pipeline 400, jack 300 promotes pipeline 400 through soil layer, adopt artificial or machinery to cut the earth in the front end of pipeline 400 simultaneously, pipeline 400 is headed into one by one, until in top to received well 200.Fig. 2 shows the reinforcing mode between the pipeline of push pipe in prior art.As shown in Figure 2, produce mismatch for avoiding pipeline 400 jointing in jack-in process or cause pipeline 400 to drift about because soil is partially soft, the interface of two pipelines 400 is alignd, is fixed to inside the interface of two pipelines 400 with the semicircular interior packing 10 of welded steel plate, adopt bolt 20 to be fixed.When pipeline 400 jacking completes, dismountable interior packing 10.Usually, the T bar collar is adopted to reinforce at pipe joint place.And, in the process of jacking, the direct of travel of pipeline be determined, if find deviation, should rectify a deviation in time.
The shortcoming of the method is, the distance of the unidirectional jacking of push pipe is limited, and especially artificial push pipe length is no more than in the common distance of 100 meters usually, otherwise can cause that the skew of push pipe is large or push pipe is damaged, and the construction period is long.
Summary of the invention
The present invention makes to solve the problem.Specifically, the object of the invention is to, the method of construction of the two-way jacking of a kind of underground pipe-driving is provided, in the common distance of unidirectional push pipe jacking, or the length in the section of laying push pipe is within the scope of the double length of the common distance of unidirectional push pipe jacking, bilateral excavation active well, two-way jacking operation simultaneously, and accurately control jacking precision, pipeline is accurately docked.
To achieve these goals, the invention provides the method for construction of the two-way jacking of a kind of underground pipe-driving, the method comprises: a) section is divided into two sections, and arrange control point at the end points place of each segmentation, described control point is located on the same line; B) make active well at the described control point place at two ends, section and arrange described active well; C) mounting guide rail and jacking device in described active well; D) in described active well, install sensing unit, the extension of the assigned direction of described sensing unit and the straight line residing for described control point are positioned at same vertical plane; E) on the top of first length of tubing, directed element is installed, two described first length of tubing are lifted on described guide rail, described directed element receives the assigned direction of described sensing unit, start described jacking device and make two first length of tubing jackings in opposite directions, and cut the earth in the front end of described first length of tubing; F) lift pipeline, described pipeline with it front pipeline connects, and described directed element receives the assigned direction of described sensing unit, starts described jacking device and makes pipeline jacking in opposite directions, and cuts the earth in described first length of tubing front end; G) step f is repeated) complete to described Pipe installing, make between described two first length of tubing and be connected unit.
Preferably, described jacking device comprises jack and top iron.
In addition, preferably, described sensing unit is laser theodolite, and described directed element is laser pick-off target.
From description above with put into practice, in the common distance of unidirectional push pipe jacking, or treat that jacking road section length is in the length of common distance twice of unidirectional push pipe jacking, two active wells are excavated at the two ends in section, middle jacking from two ends simultaneously to section, both can guarantee the jacking quality of pipeline, can speed of application have been improved again, reduce the engineering time.In addition, by pointing to the positioning action of unit and directed element, pipeline can be made to dock accurately.
Accompanying drawing explanation
Fig. 1 is schematic diagram, shows the method for construction of push pipe in prior art;
Fig. 2 shows the reinforcing mode between the pipeline of push pipe in prior art;
Fig. 3 is schematic diagram, shows the method for construction of the two-way jacking of underground pipe-driving of the present invention; And
Fig. 4 is the finishing stage schematic diagram of the method for construction descending the two-way jacking of push pipe as shown in Figure 3.
Embodiment
The embodiment of the method for construction of the two-way jacking of underground pipe-driving of the present invention is described below with reference to the accompanying drawings.Those of ordinary skill in the art can recognize, when without departing from the spirit and scope of the present invention, can revise by various different mode to described embodiment.Therefore, accompanying drawing is illustrative with being described in essence, instead of for limiting the protection domain of claim.In addition, in this manual, identical reference character represents same or analogous part.
Below by the method for construction of the two-way jacking of a kind of underground pipe-driving described in description one embodiment of the present of invention.Fig. 3 is schematic diagram, shows the method for construction of the two-way jacking of underground pipe-driving of the present invention.Fig. 4 is the finishing stage schematic diagram of the method for construction of the two-way jacking of underground pipe-driving shown in Fig. 3.
As shown in Figure 3, first according to the starting point A of the section AB of push pipe to be laid and the position of initial point B and spacing, the section AB of push pipe to be laid is divided into AC section and the segmentation of two, BD section, the length in AC section and BD section is all less than or equal to the maximum normal travel distance of the unidirectional laying of push pipe, at the end points place of each segmentation, control point A, C, D and B are set, A, C, D, B are located on the same line at control point, and middle distance between two control points C, D is the distance between normal two pipelines 400.
Active well 100 is made near control point A, the B at the AB two ends, section of push pipe to be laid.Here, refer near control point on the bearing of trend of straight line residing for control point.The degree of depth of active well 100 will meet the elevation demand of pipeline 400, arranges two active wells 100 respectively, in active well 100, make reacting wall 110 etc.Then, mounting guide rail 700 and jacking device 300 in two active wells 100; When mounting guide rail 700, adopt level instrument to check and approve the elevation of guide rail 700, avoid the elevation affecting pipeline 400.Jacking device 300 comprises jack 310 and top iron 320.In two active wells 100, the sensing extension of assigned direction of unit 500 of installation sensing unit 500, two and the straight line residing for control point A, C, D, B are positioned at same vertical plane respectively.
On the top of two first length of tubing 400, directed element 600 is installed, two first length of tubing 400 are lifted on the guide rail 700 in active well 100, now, the straight line that the axis of pipeline 400 and two point on the extension of the assigned direction of unit 500 and ground residing for control point A, C, D, B is positioned at same vertical plane.Directed element 600 receives the assigned direction pointing to unit 500, starts jacking device 300, makes first length of tubing 400 jacking in opposite directions in two active wells 100, and cut the earth in the front end of first length of tubing 400.If directed element 600 does not receive the assigned direction pointing to unit 500, jacking direction should be adjusted in time, carry out correction of deviation.Preferably, pointing to unit 500 is laser theodolites, and directed element 600 is laser pick-off targets.Be installed in active well 100 by two laser theodolites, two laser pick-off targets be installed to the top of first length of tubing 400, the laser spots that laser theodolite is launched lays respectively at the same position of laser pick-off target corresponding with it, such as target center place.Further, the axis of the laser alignment that two laser theodolites are launched overlaps, and is positioned at same vertical plane with the straight line residing for the axis of first length of tubing 400 and control point A, C, D, B.If deviation occurs in the position of laser spots, then illustrate that the jacking direction of first length of tubing 400 is departed from, should rectify a deviation in time.
Lifting pipeline 400, and be connected at the jointing of pipeline 400 front pipeline 400 with it, now, the straight line that the axis of pipeline 400 and two point on the extension of the assigned direction of unit 500 and ground residing for control point A, C, D, B is positioned at same vertical plane.Directed element 600 receives the assigned direction pointing to unit 500, and startup jacking device 300 makes pipeline 400 jacking in opposite directions in two active wells 100, and cuts the earth in first length of tubing 400 front end.In like manner, if directed element 600 does not receive the assigned direction pointing to unit 500, jacking direction should be adjusted in time, carry out correction of deviation.As shown in Figure 4, first length of tubing 400 in two active wells 100 is pushed to C, D place, control point, be connected between two first length of tubing 400, now, whole pipelines 400 installs, and the pipeline 400 between whole section AB is through, the jacking device in migration active well 100, and carry out backfill, the construction of the two-way jacking of underground pipe-driving completes.
From description above with put into practice, in the common distance of unidirectional push pipe jacking, or treat that jacking road section length is in the length of common distance twice of unidirectional push pipe jacking, two active wells are excavated at the two ends in section, middle jacking from two ends simultaneously to section, both can guarantee the jacking quality of pipeline, can speed of application have been improved again, reduce the engineering time.In addition, by pointing to the positioning action of unit and directed element, pipeline can be made to dock accurately.
The method of construction of the two-way jacking of underground pipe-driving of the present invention is described in an illustrative manner above with reference to accompanying drawing.But, it will be appreciated by those skilled in the art that for said method, various improvement and combination can also be made on the basis not departing from content of the present invention.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (2)
1. a method of construction for the two-way jacking of underground pipe-driving, comprising:
A) section is divided into two sections, arrange control point at the end points place of each segmentation, described control point is located on the same line;
B) make active well at the described control point place at two ends, section and arrange described active well;
C) in described active well, reacting wall is made, and mounting guide rail and jacking device; Wherein, level instrument is adopted to check and approve the elevation of guide rail;
D) in described active well, install sensing unit, described sensing unit is laser theodolite, and the extension of its assigned direction and the straight line residing for described control point are positioned at same vertical plane;
E) on the top of first length of tubing, directed element is installed, two described first length of tubing are lifted on described guide rail, described directed element receives the assigned direction of described sensing unit, start described jacking device and make two first length of tubing jackings in opposite directions, and cut the earth in the front end of described first length of tubing; Wherein, described directed element is laser pick-off target, and the axis of laser alignment that two laser theodolites are launched overlaps, and is positioned at same vertical plane with the straight line residing for the axis of first length of tubing and control point;
F) lift pipeline, described pipeline with it front pipeline connects, and described directed element receives the assigned direction of described sensing unit, starts described jacking device and makes pipeline jacking in opposite directions, and cuts the earth in described first length of tubing front end;
G) step f is repeated) complete to described Pipe installing, make between two first length of tubing and be connected unit.
2. the method for construction of the two-way jacking of a kind of underground pipe-driving as claimed in claim 1, wherein, described jacking device comprises jack and top iron.
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| CN201310198767.5A CN103292035B (en) | 2013-05-24 | 2013-05-24 | Construction method of underground pipe jacking |
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| CN201310198767.5A CN103292035B (en) | 2013-05-24 | 2013-05-24 | Construction method of underground pipe jacking |
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| CN103292035A CN103292035A (en) | 2013-09-11 |
| CN103292035B true CN103292035B (en) | 2015-06-10 |
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| CN110925489A (en) * | 2019-12-12 | 2020-03-27 | 贵州建工集团第一建筑工程有限责任公司 | Opposite jacking and butt joint construction method for finished pipes |
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| CN104565534B (en) * | 2014-11-24 | 2017-06-06 | 余澄玉 | A kind of method that component is laid in weak soil |
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| CN105114698A (en) * | 2015-09-08 | 2015-12-02 | 广东省建筑工程集团有限公司 | River opposite jacking butt joint construction process and specially-produced head |
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| CN106122589B (en) * | 2016-07-02 | 2018-05-01 | 天鸿建设集团有限公司 | A kind of earth pressure balance method |
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| CN110541966B (en) * | 2019-08-27 | 2024-03-26 | 北京住总集团有限责任公司 | Auxiliary equipment for jacking pipe joint in narrow space and application method thereof |
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| CN112267889B (en) * | 2020-10-26 | 2023-02-28 | 中铁八局集团第一工程有限公司 | Construction method for penetrating through filling material of molten cavity |
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