CN103453216A - Trenchless construction method of multi-pore high-density polyethylene pipeline - Google Patents
Trenchless construction method of multi-pore high-density polyethylene pipeline Download PDFInfo
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- CN103453216A CN103453216A CN2013103632757A CN201310363275A CN103453216A CN 103453216 A CN103453216 A CN 103453216A CN 2013103632757 A CN2013103632757 A CN 2013103632757A CN 201310363275 A CN201310363275 A CN 201310363275A CN 103453216 A CN103453216 A CN 103453216A
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Abstract
The invention discloses a trenchless construction method of a multi-pore high-density polyethylene pipeline. Through utilizing one drill hole, pipelines to be laid can be dragged in the drill hole for many times through a horizontal directional drilling machine, when the pipelines are dragged at each time, one pull level is synchronously dragged along with the pipelines, the pull level is used for dragging the pipelines for the next time, and so forth, all pipelines are laid. According to a method of laying the pipeline provided by the invention, multi-pore pipeline laying can be carried out under the conditions of limited construction field and insufficient pull strength of the device, so that independence of construction on equipment performance is reduced, an application range of small and middle devices is greatly expanded, and the method has practical significance. The trenchless construction method is applied to a power communication project, a project of laying the multi-pore high-density polyethylene pipeline (HDPE pipeline) by adopting the small and middle devices, and is particularly applied to a project with only one boring construction position under the condition of limited construction field.
Description
Technical field
The present invention relates to a kind of method of construction in the Construction Technology research field, particularly relate to a kind of non-excavation horizontal directional drilling method of construction that limited, equipment pull-back force lays multitube hole high-density polytene pipeline when not enough on construction ground.
Background technique
While for high density polyethylene (HDPE) pipelines such as electric power, communications, adopting non-excavation horizontal directional drilling to be laid, usually need to lay multitube hole (several holes, tens holes are tens holes even) pipeline simultaneously.In general, according to the size of the capacity of equipment (mainly referring to pull-back force) of horizontal directional drilling machine, will intend channelling and be divided into two groups, three groups or many groups, every group of pilot hole of construction separately, carry out pilot hole, reaming and the hauling pipe of pulling back.For assuring success, the pull-back force of every group of pipeline all must be controlled in the limit of power of equipment.Simultaneously, between each pilot hole, will keep certain safe distance, pipeline suffers damage when avoiding constructing.Traditional form of construction work speed of application of the many pilot holes of this grouping is slower, has also taken a large amount of Underground Space Resources.
Because urban underground space resource is limited, many times construction site is comparatively narrow, does not have a plurality of pilot hole execution conditions, the pilot hole of often can only constructing; And in such cases, multitube returns the practical capacity of dragging and may exceed equipment simultaneously, locking or lock of tool drilling easily appear in hauling pipe, thereby cause project failure.Therefore, for above-mentioned execution conditions, find the method for construction of a kind of " can overcome the technology barrier of middle-size and small-size equipment pull-back force deficiency, carry out the pipe laying of multitube hole ", there is realistic meaning.
Summary of the invention
Purpose of the present invention, be to provide a kind of non-excavation horizontal directional drilling method of construction that limited, equipment pull-back force lays multitube hole high-density polytene pipeline when not enough on construction ground.
The solution that the present invention solves its technical problem is: the non-excavating construction method of a kind of multitube hole high-density polytene pipeline, by utilizing same boring, with horizontal directional drilling machine, by the pipeline of intending laying, pull into successively in boring several times, during each hauling pipe, synchronously pull a drawbar into together with pipeline, this drawbar is as hauling pipe is used next time, so repeated multiple times, until all pipe laying is complete.
As further improvement in the technical proposal, comprise the following steps,
1) press construction requirement construction guidance hole in precalculated position;
2) classification is carried out repeatedly reaming to pilot hole, until bore diameter meets the hauling pipe requirement of multitube hole;
3) utilize the drilling rod of last reaming to carry out hauling pipe for the first time, the part of pore number for all intending laying the pore number, in hauling pipe, pull a drawbar into together with pipeline;
4) utilize this drawbar, in boring, carry out hauling pipe for the second time, in hauling pipe, together with pipeline, again pull a drawbar into;
5) repeating step 4), until the tubine road that remains is pulled in boring;
6) detect the state of the boring interior conduit that is laid in.
As further improvement in the technical proposal, in step 2) in, the final diameter of described boring is 1.2 ~ 1.5 times of external envelope diameters of all intending channelling.
As further improvement in the technical proposal, in step 3), the pore number of hauling pipe is generally the 4-8 pore for the first time.
As further improvement in the technical proposal, in step 4) and 5) in, the pore number of hauling pipe is generally 1 ~ 2 pore again.
As further improvement in the technical proposal, in step 6), the flat tube detected is carried out to the expand tube processing.
The invention has the beneficial effects as follows: the method for the channelling that the present invention puts down in writing, limited, equipment pull-back force also can carry out the pipe laying of multitube hole when not enough on construction ground, thereby reduced the dependence of construction to equipment performance, greatly widen the using scope of middle-size and small-size equipment, there is realistic meaning.The present invention is applicable: in electric power, communication engineering, adopt middle-size and small-size equipment to lay high-density polytene pipeline (HDPE pipeline) engineering in multitube hole, be particularly useful for construction site restricted, as only have in the engineering of a drilling construction position.
The accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the present invention is further illustrated.
Fig. 1 is the boring schematic diagram expanded in the present invention;
Fig. 2 is the schematic diagram of hauling pipe for the first time in the present invention, and synchronously pulls a drawbar when hauling pipe into;
Fig. 3 carries out hauling pipe schematic diagram for the second time in the present invention in pilot hole, in hauling pipe, together with pipeline, again pulls a drawbar into.
Embodiment
Below in conjunction with accompanying drawing, describe application of the present invention in detail.
With reference to Fig. 1～Fig. 3, the non-excavating construction method of a kind of multitube hole high-density polytene pipeline, by utilizing same boring 2, with horizontal directional drilling machine 1, several times the pipeline 3 of intending laying is pulled in boring 2 successively, during each hauling pipe, together with pipeline 3, synchronously pull a drawbar 5 into, this drawbar 5 is as hauling pipe is used next time, so repeated multiple times, until all pipeline 3 lays complete.
Be further used as preferred embodiment, comprise the following steps,
1) press construction requirement construction guidance hole in precalculated position;
2) classification is carried out repeatedly reaming to pilot hole, until 2 diameters of holing meet the hauling pipe requirement of multitube hole;
3) according to the ability of horizontal directional drilling machine 1, utilize the drilling rod 4 of last reaming to carry out hauling pipe for the first time, the part of pore number for all intending laying the pore number, in hauling pipe, pull a drawbar 5 into together with pipeline 3, connection between drilling rod 4 and pipeline 3 and drawbar 5 adopts back enlarging aiguille 6 and pulling head 7, wherein, drawbar 5 adopts the drilling rod of original equipment, like this, can not add new equipment or part, reduce construction cost;
4) utilize this drawbar 5, carry out hauling pipe for the second time in boring 2, in hauling pipe, again pull a drawbar 5 into together with pipeline 3, being connected between drawbar 5 and pipeline 3 and drawbar 5 adopts pulling head 7, not taking back enlarging aiguille 6, is mainly that the pipelines 3 of having pulled in boring 2 for fear of time 6 pairs of enlarging aiguilles cause damage;
5) repeating step 4), until the institute tubine road that remains 3 is pulled in boring 2;
6) detect the state of boring 2 interior conduits 3 that are laid in.
Be further used as preferred embodiment, in step 2) in, 2 the final diameter of holing is 1.2 ~ 1.5 times of external envelope diameters of all intending channellings 3.Banketing, the loose soft soil layer such as mud gets the small value, 2 the final diameter of holing is 1.2 times of external envelope diameters of all intending channellings 3; Get large value at hard soil layers such as closely knit sands, 2 the final diameter of holing is 1.5 times of external envelope diameters of all intending channellings 3.
Be further used as preferred embodiment, in step 3), the pore number of hauling pipe is generally the 4-8 pore for the first time.Specifically should consider geological condition and traverse distance, in the horizontal directional drilling machine limit of power and leave safety margin, but should not be very little, too many and bring construction risk to avoid the hauling pipe number of times.
Be further used as preferred embodiment, in step 4) and 5) in, the pore number of hauling pipe is generally 1 ~ 2 pore again.The pore number of hauling pipe is generally a pore again, while constructing in the weak soil shorter at traverse distance, that pull-back force is less, can consider to drag two pores.
Be further used as preferred embodiment, in step 6), the flat tube detected carried out to the expand tube processing.For some towing tension, the large or partially soft engineering of tubing, occur " flat tube ", thereby cause engineering to scrap, reform.Therefore, detect the state of the hole interior conduit that is laid in step 6) after, flat tube is wherein carried out to the expand tube processing.Expand tube is processed and is referred to, and at the end of drilling rod, the tube expander that its external diameter is slightly less than internal diameter of the pipeline is installed, and under the pulling force effect of borer drill rod, tube expander advances and, by the flat tube distending, makes it to restore to the original state in flat tube, thereby reaches the purpose of accident treatment.Tube expander be shaped as spheroid shape or sphere-like, its external diameter should be less than internal diameter of the pipeline 5-10mm, best results.
More than that better embodiment of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the prerequisite without prejudice to spirit of the present invention, and the modification that these are equal to or replacement all are included in the application's claim limited range.
Claims (6)
1. the non-excavating construction method of a multitube hole high-density polytene pipeline, it is characterized in that: by utilizing same boring, with horizontal directional drilling machine, by the pipeline of intending laying, pull into successively in boring several times, during each hauling pipe, synchronously pull a drawbar into together with pipeline, this drawbar is as hauling pipe is used next time, so repeated multiple times, until all pipe laying is complete.
2. the non-excavating construction method of multitube according to claim 1 hole high-density polytene pipeline is characterized in that: comprises the following steps,
1) press construction requirement construction guidance hole in precalculated position;
2) classification is carried out repeatedly reaming to pilot hole, until bore diameter meets the hauling pipe requirement of multitube hole;
3) utilize the drilling rod of last reaming to carry out hauling pipe for the first time, the part of pore number for all intending laying the pore number, in hauling pipe, pull a drawbar into together with pipeline;
4) utilize this drawbar, in boring, carry out hauling pipe for the second time, in hauling pipe, together with pipeline, again pull a drawbar into;
5) repeating step 4), until the tubine road that remains is pulled in boring;
6) detect the state of the boring interior conduit that is laid in.
3. the non-excavating construction method of multitube according to claim 2 hole high-density polytene pipeline, is characterized in that: in step 2) in, the final diameter of described boring is 1.2 ~ 1.5 times of external envelope diameters of all intending channelling.
4. the non-excavating construction method of the multitube hole high-density polytene pipeline that drag more in a hole according to claim 2 is characterized in that: in step 3), the pore number of hauling pipe is generally the 4-8 pore for the first time.
5. the non-excavating construction method of multitube according to claim 2 hole high-density polytene pipeline, is characterized in that: in step 4) and 5) in, the pore number of hauling pipe is generally 1 ~ 2 pore again.
6. the non-excavating construction method of multitube according to claim 2 hole high-density polytene pipeline, is characterized in that: in step 6), the flat tube detected is carried out to the expand tube processing.
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| CN201310363275.7A CN103453216B (en) | 2013-08-19 | 2013-08-19 | Trenchless construction method of multi-pore high-density polyethylene pipeline |
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| CN201310363275.7A CN103453216B (en) | 2013-08-19 | 2013-08-19 | Trenchless construction method of multi-pore high-density polyethylene pipeline |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106351274A (en) * | 2016-09-30 | 2017-01-25 | 中国冶集团有限公司 | Hollow hole backfilling device and method for non-excavated directional drilling pipeline |
| CN106870819A (en) * | 2017-03-24 | 2017-06-20 | 广州市恒盛建设工程有限公司 | A kind of high density polyethylene (HDPE) non-pressure pipe horizontal directional drilling construction method |
| CN107083966A (en) * | 2017-05-23 | 2017-08-22 | 梁美欣 | Pipe with small pipe diameter hidden digging structure and tunneling method |
| CN108952570A (en) * | 2018-05-31 | 2018-12-07 | 广州市电力工程有限公司 | The compound non-excavating construction method of technology is bored based on accurate pointing |
| CN110274088A (en) * | 2019-05-31 | 2019-09-24 | 武汉市武昌市政建设(集团)有限公司 | A kind of road construction non-excavation type inspection shaft pipeline construction method |
| CN110529657A (en) * | 2019-08-28 | 2019-12-03 | 六安市东城供水有限公司 | Application method and pipeline locking device of the plain cast iron pipe in non-excavating construction |
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| CN107083966A (en) * | 2017-05-23 | 2017-08-22 | 梁美欣 | Pipe with small pipe diameter hidden digging structure and tunneling method |
| CN108952570A (en) * | 2018-05-31 | 2018-12-07 | 广州市电力工程有限公司 | The compound non-excavating construction method of technology is bored based on accurate pointing |
| CN110274088A (en) * | 2019-05-31 | 2019-09-24 | 武汉市武昌市政建设(集团)有限公司 | A kind of road construction non-excavation type inspection shaft pipeline construction method |
| CN110529657A (en) * | 2019-08-28 | 2019-12-03 | 六安市东城供水有限公司 | Application method and pipeline locking device of the plain cast iron pipe in non-excavating construction |
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| CN103453216B (en) | 2015-06-17 |
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Inventor after: Zhao Ziliang Inventor after: Jiang Yongxin Inventor after: Su Jianliang Inventor after: Zhang Haizhao Inventor after: Li Huiying Inventor after: Liu Gongxun Inventor after: Liu Jianbin Inventor after: Zhao Juhui Inventor after: Liu Yan Inventor before: Zhao Ziliang Inventor before: Liu Yan Inventor before: Cheng Zhihui Inventor before: Su Jianliang Inventor before: Zhang Haizhao Inventor before: Li Huiying Inventor before: Deng Yingfang Inventor before: Liu Gongxun Inventor before: Liu Jianbin Inventor before: Zhao Juhui |
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Free format text: CORRECT: INVENTOR; FROM: ZHAO ZILIANG CHENG ZHIHUI SU JIANLIANG ZHANG HAIZHAO LI HUIYING DENG YINGFANG LIU GONGXUN LIU JIANBIN ZHAO JUHUI LIU YAN TO: ZHAO ZILIANG JIANG YONGXIN SU JIANLIANG ZHANG HAIZHAO LI HUIYING LIU GONGXUN LIU JIANBIN ZHAO JUHUI LIU YAN |
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