CN205335804U - Be suitable for cable directly buried installation structure in wet frozen soil area of high and cold height - Google Patents
Be suitable for cable directly buried installation structure in wet frozen soil area of high and cold height Download PDFInfo
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- CN205335804U CN205335804U CN201620110945.3U CN201620110945U CN205335804U CN 205335804 U CN205335804 U CN 205335804U CN 201620110945 U CN201620110945 U CN 201620110945U CN 205335804 U CN205335804 U CN 205335804U
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Abstract
The utility model discloses a be suitable for cable directly buried installation structure in wet frozen soil area of high and cold height, include that the cross section is inverted trapezoid structure's buried cable ditch, vertically lays the cable in its lower part along the buried cable ditch, it has thick dry fine sand of 10cm or weak soil to pack to be located filling of cable in the buried cable ditch all around, and the parcel all around that dry fine sand or weak soil packed there is composite geomembrane, the plain concrete apron of 10cm thickness is laid at composite geomembrane's top, and plain concrete apron upper portion is for backfilling the soil layer. The utility model discloses fine sand or weak soil filler used when utilizing composite geomembrane with cable directly buried installation wrap up and protect for the fine sand or the weak soil filler keep dry state of packing in the buried cable ditch have reduced the frozen soil seasonality and have melted the become a partner harm of cable of back regelation. The utility model discloses when being applied to the wet frozen soil of high and cold height area, the wet frozen soil of high and cold height is reducible 70% to the damage rate of cable, has effectively reduced construction cost simultaneously, has improved the efficiency of construction.
Description
Technical field
This utility model relates to cable directly buried installation structure, especially relates to be suitable to the cable directly buried installation structure of high and cold high humidity Frozen Ground Area。
Background technology
Cable transmits as electric energy, a kind of medium of signal transmission, and its system of laying is varied, including built on stilts laying, cable duct lays, cable directly buried installation, lay through cable tunnel, lay etc. through cable testing bridge multiple。Wherein cable directly buried installation is a kind of mode being applicable to outdoor distance cabling, and its advantage is that construction is simple, with low cost, cable safety is high。But, to the frozen soil region being in high and cold high humidity, especially seasonal frozen soil region, conventional cable directly buried installation brings hidden danger can to the safety of cable, even the reliability of impact power supply or signal transmission。
Seasonal frozen soil region refers to soil crust freezing in winter, the region that summer, soil layer melted。Permafrost region includes seasonal freezing region and seasonal thawing region。Annual along with seasonal variations, constantly the melting of frozen soil layer freezes again to cause the uneven of ice sheet and ice lens distribution again, so that the directly buried installation radial compression power that is subject to frozen soil layer frost heave in frozen soil layer inner cable and the axial tensile force that causes due to seasonal thawing。Under the long term of two kinds of power, the aging acceleration of cable, the risk broken down is greatly increased。Data show, do not take safeguard procedures directly buried installation cable in frozen soil region, the directly buried installation cable of the more non-Frozen Ground Area of probability broken down exceeds about 10%；If cable run is distance directly buried installation simultaneously, the fault rate of cable run will present geometric index formula increase along with the prolongation laying distance。
In " Code for design of cables of electric works " (GB50217-2007), the directly buried installation for Frozen Ground Area has such regulation: " directly buried installation, when Frozen Ground Area, should imbed below frozen soil layer；When cannot buried time can be embedded in the good dry frozen soil layer of drainage of soil or backfill soil in, it is possible to take other measures preventing cable from sustaining damage。" in Practical Project is put into practice, for the area that frozen soil layer is shallower, generally adopt cable direct-burried to enter the scheme of below frozen soil layer。For the area that frozen soil layer is deeper, then usually adopt and expand direct-buried cable ditch excavation cross section and strengthen the scheme of backfill soil amount, or adopt the schemes such as cable pipe protection。But for above two scheme, though the cable fault rate caused by frozen soil can be reduced to a certain extent in frozen soil layer district deeper, but cable pipe causes construction cost and is greatly increased, add heavy excavation cable duct cross section and then cause the rising of construction cost and the retardation of construction speed。
Summary of the invention
This utility model purpose is in that to provide a kind of cable directly buried installation structure being suitable to high and cold high humidity Frozen Ground Area, to realize the safe, economic, quick of deep frozen soil complex topographic area territory inner cable directly buried installation。
For achieving the above object, this utility model takes following technical proposals:
The cable directly buried installation structure being suitable to high and cold high humidity Frozen Ground Area described in the utility model, including the direct-buried cable ditch that transverse section is inverted trapezoidal structure, the cable of its underpart that is longitudinally laid in along described direct-buried cable ditch；The surrounding being positioned at described cable in described direct-buried cable ditch is filled with at least thick for 10cm dry fine sand or weak soil filler, and the surrounding of described dry fine sand or weak soil filler is enclosed with composite geo-membrane；The top of described composite geo-membrane is equipped with the plain concrete cover plate of at least 10cm thickness, and described plain concrete cover plate top is back fill course。
Along many that cable is left and right horizontal interval spread configuration of the longitudinal its underpart that is laid in of described direct-buried cable ditch, the left and right longitudinal edge of described plain concrete cover plate is respectively beyond more than the outer rim 5cm of corresponding first, left side cable, first cable in right side。
This utility model advantage is in that fine sand used when utilizing composite geo-membrane by cable directly buried installation or weak soil filler carry out wrapping up and protecting; make fine sand or the weak soil filler retention drying regime filled in direct-buried cable ditch, reduce after frozen soil seasonality is melted and freeze the infringement to cable again。Select tension, anti tear, composite geo-membrane that anti-bursting intensity is high simultaneously, also cable can be produced certain physical protection。Cable directly buried installation structure described in the utility model, when being applied to high and cold high humidity Frozen Ground Area, the destructive rate of cable can be reduced 70% by high and cold high humidity frozen soil, effectively reduces construction cost simultaneously, improves efficiency of construction。
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model。
Detailed description of the invention
As shown in Figure 1, the cable directly buried installation structure being suitable to high and cold high humidity Frozen Ground Area described in the utility model, including the direct-buried cable ditch that transverse section is inverted trapezoidal structure, the cable of its underpart that is longitudinally laid in along direct-buried cable ditch, cable is the six roots of sensation left and right horizontal interval arranged；The surrounding being positioned at six roots of sensation cable 1,2,3,4,5,6 in direct-buried cable ditch is filled with the thick dry fine sand filler 7 of 30cm, and the surrounding of dry fine sand filler 7 is enclosed with composite geo-membrane 8；The top of composite geo-membrane 8 is equipped with the plain concrete cover plate 9 of 10cm thickness, and the left and right longitudinal edge of plain concrete cover plate 9 is respectively beyond the outer rim 5cm of corresponding first, left side cable 1, first cable 6 in right side；Plain concrete cover plate 9 top is the back fill course 10 of compacting。
During this utility model cabling, cable distance ground 11 at least below 70cm。Cable surrounding is coated with at least thick for 30cm dry fine sand filler 7, and the surrounding of dry fine sand filler 7 is enclosed with composite geo-membrane 8, its objective is that the moisture after preventing frozen soil seasonality from melting enters。After the back fill course 10 on plain concrete cover plate 9 top is tamped recovery original appearance, along cable run, one cable marking pile 12 is set every 100m, in order to the operation maintenance of later stage cable。
Claims (2)
1. be suitable to a cable directly buried installation structure for high and cold high humidity Frozen Ground Area, including the direct-buried cable ditch that transverse section is inverted trapezoidal structure, the cable of its underpart that is longitudinally laid in along described direct-buried cable ditch；It is characterized in that: the surrounding being positioned at described cable in described direct-buried cable ditch is filled with at least thick for 10cm dry fine sand or weak soil filler, and the surrounding of described dry fine sand or weak soil filler is enclosed with composite geo-membrane；The top of described composite geo-membrane is equipped with the plain concrete cover plate of at least 10cm thickness, and described plain concrete cover plate top is back fill course。
2. be suitable to the cable directly buried installation structure of high and cold high humidity Frozen Ground Area according to claim 1, it is characterized in that: many that cable is left and right horizontal interval spread configuration of its underpart that is longitudinally laid in along described direct-buried cable ditch, the left and right longitudinal edge of described plain concrete cover plate is respectively beyond more than the outer rim 5cm of corresponding first, left side cable, first cable in right side。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620110945.3U CN205335804U (en) | 2016-02-04 | 2016-02-04 | Be suitable for cable directly buried installation structure in wet frozen soil area of high and cold height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620110945.3U CN205335804U (en) | 2016-02-04 | 2016-02-04 | Be suitable for cable directly buried installation structure in wet frozen soil area of high and cold height |
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| CN205335804U true CN205335804U (en) | 2016-06-22 |
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| CN201620110945.3U Active CN205335804U (en) | 2016-02-04 | 2016-02-04 | Be suitable for cable directly buried installation structure in wet frozen soil area of high and cold height |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482538A (en) * | 2017-08-31 | 2017-12-15 | 国网山东省电力公司菏泽市定陶区供电公司 | A kind of cable direct-burried servicing unit |
| CN108387989A (en) * | 2018-01-23 | 2018-08-10 | 广东电网有限责任公司清远供电局 | The underground laying of stress optical cable and guard method for substation's foundation displacement monitoring |
| CN108487310A (en) * | 2018-03-15 | 2018-09-04 | 济南市市政工程设计研究院（集团）有限责任公司 | Reduce pipeline and construction technology is isolated with the geomembrane that building net level length requires |
| WO2019037034A1 (en) * | 2017-08-24 | 2019-02-28 | 海门市采薇纺织科技有限公司 | Directly buried cable trench with protective structure |
| CN110690679A (en) * | 2018-07-04 | 2020-01-14 | 山西太钢不锈钢股份有限公司 | Multi-loop same-groove cable direct-buried laying method |
| WO2021119944A1 (en) * | 2019-12-16 | 2021-06-24 | 菏泽市光明电力服务有限责任公司定陶分公司 | Electrical cable direct burial assistance apparatus |
| CN113513632A (en) * | 2021-07-22 | 2021-10-19 | 江苏德誉环保设备科技有限公司 | Anti-freezing and anti-compression laying method for underground water supply pipeline of fog system |
-
2016
- 2016-02-04 CN CN201620110945.3U patent/CN205335804U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019037034A1 (en) * | 2017-08-24 | 2019-02-28 | 海门市采薇纺织科技有限公司 | Directly buried cable trench with protective structure |
| CN107482538A (en) * | 2017-08-31 | 2017-12-15 | 国网山东省电力公司菏泽市定陶区供电公司 | A kind of cable direct-burried servicing unit |
| CN107482538B (en) * | 2017-08-31 | 2019-07-26 | 国网山东省电力公司菏泽市定陶区供电公司 | A kind of cable direct-burried auxiliary device |
| CN108387989A (en) * | 2018-01-23 | 2018-08-10 | 广东电网有限责任公司清远供电局 | The underground laying of stress optical cable and guard method for substation's foundation displacement monitoring |
| CN108387989B (en) * | 2018-01-23 | 2023-09-01 | 广东电网有限责任公司清远供电局 | Stress optical cable underground laying and protecting method for monitoring foundation displacement of transformer substation |
| CN108487310A (en) * | 2018-03-15 | 2018-09-04 | 济南市市政工程设计研究院（集团）有限责任公司 | Reduce pipeline and construction technology is isolated with the geomembrane that building net level length requires |
| CN108487310B (en) * | 2018-03-15 | 2020-06-30 | 济南市市政工程设计研究院（集团）有限责任公司 | Geomembrane isolation process for reducing horizontal clear distance between pipeline and building and pipeline |
| CN110690679A (en) * | 2018-07-04 | 2020-01-14 | 山西太钢不锈钢股份有限公司 | Multi-loop same-groove cable direct-buried laying method |
| WO2021119944A1 (en) * | 2019-12-16 | 2021-06-24 | 菏泽市光明电力服务有限责任公司定陶分公司 | Electrical cable direct burial assistance apparatus |
| CN113513632A (en) * | 2021-07-22 | 2021-10-19 | 江苏德誉环保设备科技有限公司 | Anti-freezing and anti-compression laying method for underground water supply pipeline of fog system |
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Address after: 450003 Jinshui Road 109, Zhengzhou City, Henan Province Patentee after: Yellow River Survey Planning and Design Research Institute Co., Ltd. Address before: 450003 Jinshui Road 109, Zhengzhou City, Henan Province Patentee before: Yellow River Engineering Consulting Co., Ltd. |