CN106159475B - Arid geology grounded screen and its water conservation drop resistance construction method - Google Patents
Arid geology grounded screen and its water conservation drop resistance construction method Download PDFInfo
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- CN106159475B CN106159475B CN201510135350.3A CN201510135350A CN106159475B CN 106159475 B CN106159475 B CN 106159475B CN 201510135350 A CN201510135350 A CN 201510135350A CN 106159475 B CN106159475 B CN 106159475B
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Abstract
A kind of arid geology grounded screen, including vertical grounding electrode, horizontal grounding objects, ground outlet and lightning rod；It further include a plurality of ground connection ditch；Vertical grounding electrode is several, and horizontal grounding objects are a plurality of, and a horizontal grounding objects are fixedly installed in every ground connection ditch；Several vertical grounding electrodes are placed in the periphery of lightning rod with a plurality of horizontal grounding objects, horizontal grounding objects both ends are fixedly connected with vertical grounding electrode upper end, it is being connected with ground outlet at lightning rod, ground outlet is connect with lightning rod, the both ends of another part horizontal grounding objects are fixedly connected with vertical grounding electrode upper end respectively, vertical grounding electrode is vertically installed in ground connection ditch in the following, vertical grounding electrode upper end is above ground connection ditch bottom of trench；Horizontal grounding objects are enclosed with friction reducer layer with vertical grounding electrode upper end, and ground connection ditch bottom is equipped with mixing water-retaining agent fine earth layer, and it is common back fill course to mix above water-retaining agent fine earth layer.It is mainly used for arid area grounding net of transformer substation, greatly reduces the earthing pole depth of burying.
Description
Technical field
The invention belongs to the constructions of the grounded screen of field of electricity construction, and in particular to a kind of arid geology grounded screen, the present invention
Further relate to arid geology grounded screen water conservation drop resistance construction method.
Background technology
Arid geology reduces Resistance of Grounding Grids, is always industry problems because soil resistivity is high.It reduces and connects at present
The method of ground network ground resistance includes：1, using friction reducer；2, using ionic grounding module；3, using soil ion additive.
In arid geology, three of the above method is such as unable to reach design requirement, then separately needs to deepen earthing pole, and extend grounded screen；
Quantities and expense in this way greatly increases.
Invention content
For the high problem of arid geology soil resistivity, the object of the present invention is to provide a kind of reduction soil resistivities
Arid geology grounded screen, it is a further object of the present invention to provide arid geology grounded screens to be retained drop resistance construction method.
To achieve the above object, the technical solution adopted by the present invention is as follows：A kind of arid geology grounded screen, including vertically connect
Earth polar, horizontal grounding objects, lightning rod and ground outlet；It is characterized in that：It further include a plurality of ground connection ditch；Vertical grounding electrode is number
Root, horizontal grounding objects are a plurality of, and a horizontal grounding objects are fixedly installed in every ground connection ditch；Several vertical grounding electrodes and a plurality of water
Flat grounding body is placed in the periphery of lightning rod, and horizontal grounding objects both ends are fixedly connected with vertical grounding electrode upper end, close to lightning rod
Place is connected with ground outlet, and ground outlet connect with lightning rod, the both ends of another part horizontal grounding objects respectively with it is vertical
Earthing pole upper end is fixedly connected, and vertical grounding electrode is vertically installed in ground connection ditch in the following, vertical grounding electrode upper end is above ground connection ditch
Bottom of trench；Horizontal grounding objects are enclosed with friction reducer layer with vertical grounding electrode upper end, and ground connection ditch bottom is equipped with mixing water-retaining agent fine earth
Layer, it is common back fill course to mix above water-retaining agent fine earth layer.
Realize that the technical solution of another object of the present invention is as follows：A kind of arid geology grounded screen water conservation drop resistance construction method,
Include the following steps：A, horizontal grounding objects and vertical grounding electrode laying path are determined；B, ground connection ditch excavates；C, horizontal grounding objects and
Vertical grounding electrode makes and installation；D, Grounding lead-out wire makes and installs；E, friction reducer is wrapped up；F, preparation backfill mixing
Water-retaining agent fine earth；G, the backfill of ground connection ditch and compacting.
The horizontal grounding objects use copper-clad steel strand wires；The vertical grounding electrode uses copper clad steel round steel.
Present invention is mainly used for arid area traction substation independent lightning rod grounded screens, can be used for traction substation
Main grounding grid and transformer and distribution station grounded screen have main following advantages compared with prior art：Backfill fine earth processing cost
It is low；The water holding capacity of backfill mixing water-retaining agent fine earth is strong；Reduce the earthing pole depth of burying；It reduces grounded screen and lays area.
Description of the drawings
Fig. 1 is the floor plan of the present invention；
Fig. 2 is the A direction views of Fig. 1；
Fig. 3 is ground connection ditch back-filling in layers cross-sectional view；
Fig. 4 is ground connection ditch back-filling in layers profilograph.
In figure：1-vertical grounding electrode；2-horizontal grounding objects, 201-arc horizontal grounding objects；3-lightning rods；4-keep away
Thunder needle basis；5-ground outlets；6-do not excavate soil；7-friction reducer layers；8-mixing water-retaining agent fine earth layers；9-is common
Back fill course；H1-ground connection trench depth；H2-vertical grounding electrode length；H3-mixing water-retaining agent fine earth layer height；H4-is vertical
Earthing pole exposes ground connection bottom of trench height；H5-friction reducer layer thickness；The height that h6-ground outlet is basseted；W-ground connection
Ditch width.
Specific implementation mode
Embodiment 1, as shown in Figures 1 and 2：A kind of arid geology grounded screen, including vertical grounding electrode 1, horizontal grounding objects
2, ground outlet 5 and lightning rod 3；It further include a plurality of ground connection ditch；Vertical grounding electrode 1 be it is several, horizontal grounding objects 2 be it is a plurality of,
Referring to Fig. 3, a horizontal grounding objects 2 are fixedly installed in every ground connection ditch；It is 400mm to be grounded ditch width w, and ground connection trench depth h1 is
1500mm；Several vertical grounding electrodes 1 and a plurality of horizontal grounding objects 2 are placed in the periphery of lightning rod 3,2 both ends of horizontal grounding objects with hang down
Direct 1 upper end of earth polar is fixedly connected, at lightning rod 3 with the hot-melt adhesive paste of ground outlet 5, ground outlet 5 with keep away
Thunder needle 3 connects, and vertical grounding electrode 1 is vertically installed in ground connection ditch in the following, vertical grounding electrode length h2 is 2500mm；Referring to Fig. 4, hang down
Expose ground connection bottom of trench height h4 substantially above ground connection ditch bottom of trench substantially 150mm, i.e. vertical grounding electrode in direct 1 upper end of earth polar
150mm；Horizontal grounding objects 2 are enclosed with friction reducer layer 7 with 1 upper end of vertical grounding electrode, and friction reducer layer thickness h5 is 75mm；It is grounded ditch
Bottom is equipped with mixing water-retaining agent fine earth layer 8, and mixing water-retaining agent fine earth layer height h3 is 400mm, is mixed on water-retaining agent fine earth layer 8
Face is common back fill course 9.
Referring to Fig. 1：The present embodiment vertical grounding electrode 1 is four, and horizontal grounding objects 2 are five, wherein three horizontal groundings
Body 2 is connect with ground outlet 5, both ends and vertical grounding electrode 1 connect；Two other horizontal grounding objects 2 are arc, and arc is horizontal
201 both ends of grounding body are fixedly connected with 1 upper end of vertical grounding electrode respectively, five compositions of horizontal grounding objects 2 substantially semicircular in shape
Grounded screen, arc horizontal grounding objects 201 keep the length of this section of horizontal grounding objects longer than the length of linear horizontal grounding objects, can
Resistance value is reduced to greatest extent；Ground outlet 5 is connect with lightning rod 3, and 3 bottom of lightning rod is arranged on lightning rod basis 4.
The height h6 that ground outlet is basseted is 300mm.Vertical grounding electrode 1 is made of copper clad steel round steel；Horizontal grounding objects 2 are adopted
With copper-clad steel strand manufacturing.
A kind of embodiment 2, arid geology grounded screen water conservation drop resistance construction method, includes the following steps：A, determine that level connects
Ground body and vertical grounding electrode lay path；B, ground connection ditch excavates；C, horizontal grounding objects and vertical grounding electrode make and install；D, it connects
Mesh grounding lead-out wire makes and installation；E, friction reducer is wrapped up；F, preparation backfill mixing water-retaining agent fine earth；G, ground connection ditch backfill and
Compacting.Details are as follows for specific method：
A, horizontal grounding objects laying path and vertical grounding electrode laying path are determined：According to design drawing and construction before construction
On-site actual situations determine horizontal grounding objects laying path and vertical grounding electrode laying position, use determine stake and scribing line at the scene
It marks.Earthing pole, which lays path and position, to be confirmed jointly with design, management and civil engineering contractor, check whether and civil engineering
Conflict, and if ground wire pipeline conflict takes rational method to avoid to have a conflict.Prepare installation drawing, construction tool and phase
Close material.
B, ground connection ditch excavates：Location survey terminates, earthing material arrival and it is qualified after, carry out ground connection ditch excavate, referring to
Fig. 3, ground connection ditch width w are 400mm, and ground connection trench depth h1 is 1500mm.
C, horizontal grounding objects and vertical grounding electrode make and install：Ground connection ditch dig after, carry out horizontal grounding objects laying with
Vertical grounding electrode；Horizontal grounding objects use Φ 150mm2Copper-clad steel strand wires, vertical grounding electrode use Φ 200mm2× 2500mm copper-clads
Steel round steel；Vertical grounding electrode is pounded from ground connection bottom of trench and does not excavate soil 6 into underground, exposing 150mm or so is used for and horizontal grounding
Body connects；Referring to Fig. 1, horizontal grounding objects and vertical grounding electrode are used into hot-melt adhesive paste.
D, Grounding lead-out wire makes and installs：Ground outlet one end uses hot-melt adhesive paste with horizontal grounding objects,
The ground outlet other end is connect with lightning rod.
E, friction reducer is wrapped up：According to friction reducer operation instructions, friction reducer and water are pressed 0.6:1.0 weight ratio mixing,
It is sufficiently stirred until at sticky shape, is wrapped in horizontal grounding objects and exposes the vertical grounding electrode surface of ground connection bottom of trench 150mm, be made
Friction reducer layer 7, package radius is not less than 75mm, and referring to Fig. 4, that is, the friction reducer layer thickness h5 wrapped up is 75mm.
F, preparation backfill mixing water-retaining agent fine earth：Fine earth will be backfilled and water-retaining agent presses 1000:2 weight ratio uniformly mixes,
Lower step is for use.
G, the backfill of ground connection ditch and compacting：Management inspection is first reported before being grounded ditch backfill, could be backfilled after qualified.When backfill,
It is grounded ditch bottom to be backfilled with the ready mixing water-retaining agent fine earths of step f, backfill height at least will be more than friction reducer upper epidermis
200mm, it is 400mm preferably to mix water-retaining agent fine earth layer height h3；Spray water while backfill, amount of water is can be impregnated with backfill
Mixing water-retaining agent fine earth layer 8 is limited；It is real with the former earthen backfill rear screed that excavates to mix the upper surface of water-retaining agent fine earth layer, after natural subsidence again
Compacting one time.
Vertical grounding electrode spacing is 5m+0.00m；Hot-melt adhesive paste position is sure to firm welding, should not there is crack, stomata, de-
The defects of weldering and solder skip, weld seam is full, and one layer of antirust paint is brushed in commissure after being soldered；Ground outlet copper-clad steel strand wires system
Make, the ground outlet for exposing outside earth's surface needs to do galvanizing preservative treatment, then again surface apply successively red lead with it is pitch-dark, be located at
Underground is intended to pitching paint close to the ground outlet of surface layer；The height that ground outlet is basseted is 0.3m；Step e is related to
And friction reducer use SML series anti-corrosion type chemical pharmacon for reduced resistance, obtained by commercial sources；The water-retaining agent that step f is related to uses
Polyacrylate water-retaining agent, is obtained by commercial sources.
Embodiment 3, the present embodiment is same as Example 2, but when step e, package friction reducer, friction reducer and water press 0.5:
1.0 weight ratio mixing.
Embodiment 4, the present embodiment is same as Example 2, but when step e, package friction reducer, friction reducer and water press 0.4:
1.0 weight ratio mixing.
Claims (10)
1. a kind of arid geology grounded screen, including vertical grounding electrode, horizontal grounding objects, ground outlet and lightning rod；Its feature
It is：It further include a plurality of ground connection ditch；Vertical grounding electrode（1）To be several, horizontal grounding objects（2）It is solid in every ground connection ditch to be a plurality of
One horizontal grounding objects is set surely（2）；Several vertical grounding electrodes（1）With a plurality of horizontal grounding objects（2）It is placed in lightning rod（3）It is outer
It encloses, horizontal grounding objects（2）Both ends and vertical grounding electrode（1）Upper end is fixedly connected, close to lightning rod（3）Locate same ground outlet
（5）Connection, ground outlet（5）With lightning rod（3）Connection, vertical grounding electrode（1）Ground connection ditch is vertically installed in the following, vertically connecing
Earth polar（1）Upper end is above ground connection ditch bottom of trench；Horizontal grounding objects（2）With vertical grounding electrode（1）Upper end is enclosed with friction reducer layer
（7）, ground connection ditch bottom is equipped with mixing water-retaining agent fine earth layer（8）, mix water-retaining agent fine earth layer（8）It is common back fill course above
（9）.
2. a kind of arid geology grounded screen as described in claim 1, it is characterised in that：Vertical grounding electrode（1）It is four, it is horizontal
Grounding body（2）It it is five, wherein three horizontal grounding objects（2）With ground outlet（5）Connection, both ends and vertical grounding electrode（1）
It is separately connected, two other horizontal grounding objects（2）For arc, arc horizontal grounding objects（201）Both ends respectively with vertical grounding electrode
（1）Upper end is fixedly connected, five horizontal grounding objects（2）The grounded screen of composition substantially semicircular in shape；Lightning rod（3）Bottom setting exists
Lightning rod basis（4）Above.
3. a kind of arid geology grounded screen as described in claim 1, it is characterised in that：Vertical grounding electrode（1）Using copper clad steel
Round steel makes；Horizontal grounding objects（2）Using copper-clad steel strand manufacturing.
4. a kind of arid geology grounded screen as claimed in claim 1,2 or 3, it is characterised in that：It is grounded ditch width（w）For
400mm is grounded trench depth（h1）For 1500mm.
5. a kind of arid geology grounded screen as claimed in claim 4, it is characterised in that：Vertical grounding electrode length（h2）For
2500mm；Friction reducer layer thickness（h5）For 75mm；Vertical grounding electrode exposes ground connection bottom of trench height（h4）For 150mm；Mixing water conservation
Agent fine earth layer height（h3）For 400mm；The height that ground outlet is basseted（h6）For 300mm.
6. a kind of arid geology grounded screen water conservation drop resistance construction method, it is characterised in that include the following steps：A, determine that level connects
Ground body and vertical grounding electrode lay path；B, ground connection ditch excavates；C, horizontal grounding objects and vertical grounding electrode make and install；D, it connects
Mesh grounding lead-out wire makes and installation；E, friction reducer is wrapped up；F, preparation backfill mixing water-retaining agent fine earth；G, ground connection ditch backfill and
Compacting.
7. a kind of arid geology grounded screen water conservation drop resistance construction method as claimed in claim 6, it is characterised in that specific method
It is as follows：
A, horizontal grounding objects laying path and vertical grounding electrode laying path are determined：According to design drawing and construction site before construction
Actual conditions determine horizontal grounding objects laying path and vertical grounding electrode laying position, and stake is determined in use at the scene and scribing line is carried out
Label；
B, ground connection ditch excavates：It is 400mm according to ground connection ditch width, ground connection trench depth is that 1500mm excavates ground connection ditch；
C, horizontal grounding objects and vertical grounding electrode make and install：Horizontal grounding objects use Φ 150mm2Copper-clad steel strand wires, vertically connect
Earth polar uses Φ 200mm2× 2500mm copper clad steel round steel；Vertical grounding electrode is pounded from ground connection bottom of trench and does not excavate soil into underground,
Expose 150mm or so for being connected with horizontal grounding objects；Horizontal grounding objects and vertical grounding electrode are used into hot-melt adhesive paste；
D, Grounding lead-out wire makes and installs：Ground outlet one end uses hot-melt adhesive paste, ground connection with horizontal grounding objects
The lead-out wire other end is connect with lightning rod；
E, friction reducer is wrapped up：Friction reducer and water are pressed 0.4~0.6:1.0 weight ratio mixing is sufficiently stirred until at sticky shape,
It is wrapped in horizontal grounding objects and exposes the vertical grounding electrode surface of ground connection bottom of trench 150mm, friction reducer layer is made, package radius is not small
In 75mm；
F, preparation backfill mixing water-retaining agent fine earth：Fine earth will be backfilled and water-retaining agent presses 1000:2 weight ratio uniformly mixes, lower step
It is rapid for use；
G, the backfill of ground connection ditch and compacting：It is grounded ditch bottom to be backfilled with the ready mixing water-retaining agent fine earths of step f, backfill height is extremely
To be more than friction reducer upper epidermis 200mm less, spray water is limited with the mixing water-retaining agent fine earth layer that can be impregnated with backfill while backfill；
It is real with the former earthen backfill rear screed that excavates to mix the upper surface of water-retaining agent fine earth layer, is tamped again one time after natural subsidence.
8. a kind of arid geology grounded screen water conservation drop resistance construction method as claimed in claim 7, it is characterised in that：Vertical ground connection
Interpolar is away from for 5m+0.00m；Brush one layer of antirust paint in hot-melt adhesive paste position commissure；Ground outlet copper-clad steel strand manufacturing, outside
Expose earth's surface ground outlet do galvanizing preservative treatment, then again surface apply successively red lead with it is pitch-dark, it is located underground close
Equal pitching paint is wanted in the ground outlet of surface layer；The height that ground outlet is basseted is 0.3m.
9. a kind of arid geology grounded screen water conservation drop resistance construction method as claimed in claim 8, it is characterised in that：Step g is mixed
Conjunction water-retaining agent fine earth layer height is 400mm.
10. a kind of arid geology grounded screen water conservation drop resistance construction method as claimed in claim 9, it is characterised in that：Step e is related to
And friction reducer use SML series anti-corrosion type chemical pharmacon for reduced resistance；The water-retaining agent that step f is related to uses polyacrylate water-retaining agent.
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| CN201510135350.3A CN106159475B (en) | 2015-03-26 | 2015-03-26 | Arid geology grounded screen and its water conservation drop resistance construction method |
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| CN106159475B true CN106159475B (en) | 2018-09-21 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877019A (en) * | 2017-02-15 | 2017-06-20 | 中铁二十局集团电务电化工程有限公司 | A kind of arid geology grounded screen and its construction and application method |
| CN109524867B (en) * | 2018-11-30 | 2020-06-05 | 南宁安普电力设备有限公司 | Installation method of graphene composite rapid grounding system |
| CN110919216A (en) * | 2019-11-26 | 2020-03-27 | 中国电建集团山东电力建设第一工程有限公司 | Corrosion prevention method for welding of grounding wire of thermal power plant in saline-alkali area |
| WO2023070276A1 (en) * | 2021-10-25 | 2023-05-04 | 谭晓正 | Simple lightning protection processing method for outdoor pole |
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| CN1805218A (en) * | 2005-01-13 | 2006-07-19 | 李新利 | Quick-mounted earthing pole containing resistance-reducing agent |
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