CN103453216B - 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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- CN103453216B CN103453216B CN201310363275.7A CN201310363275A CN103453216B CN 103453216 B CN103453216 B CN 103453216B CN 201310363275 A CN201310363275 A CN 201310363275A CN 103453216 B CN103453216 B CN 103453216B
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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 Construction Technology research field, particularly relate to a kind of limited, equipment pull-back force on construction ground and time not enough, lay the no-dig technique horizontal directional drilling method of construction of multitube hole high-density polytene pipeline.
Background technique
When adopting no-dig technique horizontal directional drilling to lay for the high-density polytene pipeline such as electric power, communication, usually need to lay multitube hole (a few hole, tens holes even tens holes) pipeline simultaneously.In general, according to the size of the capacity of equipment (mainly referring to pull-back force) of horizontal directional drilling machine, plan channelling is divided into two groups, three groups or many groups, often a group construction pilot hole separately, carries out pilot hole, reaming and hauling pipe of pulling back.For assuring success, the pull-back force often organizing pipeline all must control in the limit of power of equipment.Meanwhile, will keep certain safe distance between each pilot hole, during to avoid constructing, pipeline suffers damage.The traditional construction mode speed of application of the many pilot holes of this grouping is comparatively slow, also occupies a large amount of Underground Space Resources.
Because urban underground space resource is limited, many times construction site is comparatively narrow, does not have multiple pilot hole execution conditions, a pilot hole of often can only constructing; And in such cases, multitube returns and to drag and may beyond the practical capacity of equipment, and locking or lock of tool drilling easily appear in hauling pipe, thus cause project failure simultaneously.Therefore, for above-mentioned execution conditions, find the method for construction of a kind of " technology barrier of middle-size and small-size equipment pull-back force deficiency can be overcome, carry out the pipe laying of multitube hole ", there is realistic meaning.
Summary of the invention
Object of the present invention, is to provide a kind of limited, equipment pull-back force on construction ground to lay the no-dig technique horizontal directional drilling method of construction of multitube hole high-density polytene pipeline time not enough.
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, several times the pipeline intending laying is pulled in boring successively with horizontal directional drilling machine, during each hauling pipe, a drawbar is synchronously pulled 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 the further improvement of technique scheme, comprise the following steps,
1) construction requirement construction guidance hole is pressed in precalculated position;
2) classification carries 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 first time hauling pipe, pore number is a part of all intending laying pore number, while hauling pipe, pulls a drawbar into together with pipeline;
4) utilize this drawbar, in boring, carry out second time hauling pipe, while hauling pipe, again pull a drawbar into together with pipeline;
5) step 4) is repeated, until the tubine road that needs is pulled in boring;
6) state of the boring interior conduit that is laid in is detected.
As the further improvement of technique scheme, in step 2) in, the final diameter of described boring is 1.2 ~ 1.5 times of circumscribed enveloping diameter all intending channelling.
As the further improvement of technique scheme, in step 3), the pore number of hauling pipe is generally 4-8 pore for the first time.
As the further improvement of technique scheme, in step 4) and 5) in, the pore number of hauling pipe is generally 1 ~ 2 pore again.
As the further improvement of technique scheme, in step 6), expand tube process is carried out to the flat tube detected.
The invention has the beneficial effects as follows: the method for the channelling described in the present invention, limited, equipment pull-back force also can carry out the pipe laying of multitube hole time not enough on construction ground, thus reduce 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 suitable for: in electric power, communication engineering, adopting middle-size and small-size equipment to lay high-density polytene pipeline (HDPE pipeline) engineering in multitube hole, being particularly useful for construction site restricted, as only having in the engineering of a drilling construction position.
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 first time hauling pipe schematic diagram in the present invention, and synchronously pulls a drawbar into when hauling pipe;
Fig. 3 carries out second time hauling pipe schematic diagram in the present invention in pilot hole, while hauling pipe, again pulls a drawbar into together with pipeline.
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, several times the pipeline 3 intending laying is pulled in boring 2 successively with horizontal directional drilling machine 1, during each hauling pipe, synchronously pull a drawbar 5 into together with pipeline 3, 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) construction requirement construction guidance hole is pressed in precalculated position;
2) classification carries out repeatedly reaming to pilot hole, until boring 2 diameters meet the hauling pipe requirement of multitube hole;
3) according to the ability of horizontal directional drilling machine 1, the drilling rod 4 of last reaming is utilized to carry out first time hauling pipe, pore number is a part of all intending laying pore number, while hauling pipe, pulls 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, new equipment or part can not be added, reduce construction cost;
4) this drawbar 5 is utilized, second time hauling pipe is carried out in boring 2, while hauling pipe, a drawbar 5 is again pulled into together with pipeline 3, connection between drawbar 5 and pipeline 3 and drawbar 5 adopts pulling head 7, not taking back enlarging aiguille 6, mainly in order to avoid returning enlarging aiguille 6, damage being caused to the pipeline 3 pulled in boring 2;
5) step 4) is repeated, until the tubine road 3 that needs is pulled in boring 2;
6) state of boring 2 interior conduit 3 that is laid in is detected.
Be further used as preferred embodiment, in step 2) in, the final diameter of boring 2 is 1.2 ~ 1.5 times of circumscribed enveloping diameter all intending channelling 3.Banketing, the loose soft soil layer such as mud gets the small value, namely hole 2 final diameter be 1.2 times of circumscribed enveloping diameter all intending channellings 3; Take large values at hard soil layers such as closely knit sands, i.e. the final diameter of boring 2 is 1.5 times of circumscribed enveloping diameter all intending channellings 3.
Be further used as preferred embodiment, in step 3), the pore number of hauling pipe is generally 4-8 pore for the first time.Specifically should consider geological condition and traverse distance, in horizontal directional drilling machine limit of power, leave safety margin, but very little, construction risk should not be brought to avoid hauling pipe number of times too many.
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, when constructing in the weak soil that, pull-back force shorter at traverse distance is less, can consider to drag two pores.
Be further used as preferred embodiment, in step 6), expand tube process carried out to the flat tube detected.The engineering comparatively large for some towing tension or tubing is partially soft, occurs " flat tube ", thus causes engineering to be scrapped, reforms.Therefore detect the state of the hole interior conduit that is laid in step 6) after, expand tube process is carried out to flat tube wherein.Expand tube process refers to installs at the end of drilling rod the tube expander that its external diameter is slightly less than internal diameter of the pipeline, and under the pulling force effect of borer drill rod, tube expander advances and by flat tube distending, makes it to restore to the original state, thus reach the object of accident treatment in flat tube.The shape of tube expander is spheroid shape or sphere-like, and 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 these equivalent modification or replacement are all 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, several times the pipeline intending laying is pulled in boring successively with horizontal directional drilling machine, during each hauling pipe, a drawbar is synchronously pulled 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 hole according to claim 1 high-density polytene pipeline, is characterized in that: comprise the following steps,
1) construction requirement construction guidance hole is pressed in precalculated position;
2) classification carries 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 first time hauling pipe, pore number is a part of all intending laying pore number, while hauling pipe, pulls a drawbar into together with pipeline;
4) utilize this drawbar, in boring, carry out second time hauling pipe, while hauling pipe, again pull a drawbar into together with pipeline;
5) step 4) is repeated, until the tubine road that needs is pulled in boring;
6) state of the boring interior conduit that is laid in is detected.
3. the non-excavating construction method of multitube hole according to claim 2 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 circumscribed enveloping diameter all intending channelling.
4. the non-excavating construction method of multitube hole according to claim 2 high-density polytene pipeline, is characterized in that: in step 3), and the pore number of hauling pipe is generally 4-8 pore for the first time.
5. the non-excavating construction method of multitube hole according to claim 2 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 hole according to claim 2 high-density polytene pipeline, is characterized in that: in step 6), carries out expand tube process to the flat tube detected.
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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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| CN103453216B true CN103453216B (en) | 2015-06-17 |
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| CN106351274B (en) * | 2016-09-30 | 2019-01-15 | 中国一冶集团有限公司 | Hollow hole backfilling apparatus and its earth-filling method for no-dig technique directional drilling pipeline |
| CN106870819B (en) * | 2017-03-24 | 2017-12-26 | 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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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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