CN108429109A - A kind of mud stone class geology Grounding Measure of GSM - Google Patents
A kind of mud stone class geology Grounding Measure of GSM Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
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Abstract
The invention discloses a kind of mud stone class geology Grounding Measure of GSM, include the following steps：Step 1, standby material and scene prepare；Step 2, measurement and positioning and grooving；Step 3, Grounding Grids laying；Step 4, horizontal grounding objects laying；Step 5, earthed system welding；Step 6, trench backfill；Step 7, ground outlet；Step 8, ground outlet are connect with ground connection busbar；Step 9, ground resistance measure；By following 50*6 zinc-coated flat steel sheets horizontal grounding objects, and single length >=6m；The Grounding Grids of 50*50*5,2500mm；The Q235 galvanized steel plain sheets of 100mm*100mm*10mm；The ground outlet of 50mm*5mm, T2 purple band steel is got all the ready, is checked and accepted by foundation pit bearing capacity, this method, be conducive to reduce resistance well, improve anti-corrosion capability, step voltage can be reduced, so that personnel safety factor is improved, while having good antiseepage outlet capacity, is conducive to antirust.
Description
Technical field
The present invention relates to mud stone class geology grounded screen technical field of construction, specially a kind of mud stone class geology grounded screen construction
Method.
Background technology
Lightening protection engineering is that difficulty of construction maximum is also a most important subitem in building, due to the different grounded screens of environment
Design there is also larger difference, the earth work of system is mainly by grounding body, and connecting line forms ground networks, wherein influencing
Earthing effect it is several because being known as soil resistivity, grounding body selects the anti-corrosion of earthing material and rational cloth to draw ground networks.
Since grounded screen is easy to be ignored by people as concealed work, often only pays attention to the measurement result of last ground resistance, work as ground connection
It is easy to cause and does over again when resistivity measurements are undesirable, increase construction cost.Therefore while focusing on construction results more
Focus on work progress.But with the raising of voltage class of electric power system and the increase of capacity, accident caused by imperfect earth
Expansion problem occurs repeatedly.
It is mostly rock for mountain area geology, soil resistivity is high, constructional difficulties, it is difficult to reach design grounded screen electric resistance and want
It asks, works out the engineering method and carry out guiding construction, ensure that plant area's grounded screen meets design requirement, meet construction needs, transported for power plant
Row provides safe and reliable service condition.
Existing plant area's grounding construction method, can not reduce resistance well, and anti-corrosion capability is relatively low, can not reduce
Step voltage makes personal safety reduce, while without good antiseepage outlet capacity, being unfavorable for antirust, for this defect, so
It is necessary that we, which design a kind of mud stone class geology Grounding Measure of GSM,.
Invention content
The purpose of the present invention is to provide a kind of mud stone class geology Grounding Measure of GSM, to solve in above-mentioned background technology
The problem of proposition.
To achieve the above object, the present invention provides the following technical solutions：
A kind of mud stone class geology Grounding Measure of GSM, includes the following steps：Step 1, standby material and scene prepare；Step 2 is surveyed
Amount positioning and grooving；Step 3, Grounding Grids laying；Step 4, horizontal grounding objects laying；Step 5, earthed system welding；
Step 6, trench backfill；Step 7, ground outlet；Step 8, ground outlet are connect with ground connection busbar；Step 9, ground connection
Resistance measurement；
Wherein in above-mentioned step one, by following 50*6 zinc-coated flat steel sheets horizontal grounding objects, and single length >=6m；50*50*5、
The Grounding Grids of 2500mm；The Q235 galvanized steel plain sheets of 100mm*100mm*10mm；The ground outlet of 50*6 zinc-coated flat steel sheets is standby
Together, ensure have corresponding constructing operation face, substrate leveling is finished, checked and accepted by foundation pit bearing capacity, working face composite earthing network
Surveying setting-out spreads lime and marks and checked and accepted by management after hours, and site operation electricity consumption power supply sockets in place；
Wherein in above-mentioned step two, unwrapping wire, agent structure earth excavation are measured according to earthing or grounding means floor plan
And the smooth rear progress surveying setting-out of substrate, it is marked with lime, after composite earthing network measurement and positioning, is built by design requirement distance
The rear excavation grooves of object 1m or so are built, excavation size is 800*800, and length is determined that channel away compares engineering drawing by design drawing
Paper, the groove at bottom plate local subsidence also answer local subsidence, sink laying when do circular arc of the turning radius not less than 5m and handle；
Wherein in above-mentioned step three, hole is drilled out with drilling machine, drains hole internal water accumulation（Prevent pulp dilution）Afterwards, it is put into
Grounding Grids are simultaneously welded with horizontal grounding objects, are finally pressed into slurry, until being full of entire friction reducer fill area, friction reducer is used
Every meter of about 20Kg is measured, and ensures that Grounding Grids are located at friction reducer fill area centre；
Wherein in above-mentioned step four, ditch internal water accumulation is drained, lay horizontal grounding objects and is connect as required with adjacently body,
Horizontal grounding objects are 50*6 zinc-coated flat steel sheets, stand up laying, horizontal grounding objects are under bed course at 825mm, and horizontal grounding objects are in bottom plate
Local subsidence is also answered in laying at local subsidence, and circular arc of the turning radius not less than 5m should be done by sinking when laying is handled, and is being in the milk
It is preceding that bottom support is carried out to horizontal grounding objects, facilitate drag reducing agent slurry to wrap up, ensures that horizontal grounding objects should be at friction reducer filling
District center position, the size of friction reducer package level grounding body band steel are 150mm*100mm, every meter of friction reducer dosage about 20kg,
After slurry tentatively solidification, element soil or clay are backfilled, and tamp；
Wherein in above-mentioned step five, grounding body welding uses exothermic weld, horizontal grounding objects welding form to be divided into word weldering
It connects, T words weld, cross welding and the welding with Grounding Grids, firm welding, no rosin joint, desoldering, solder skip, grounding flat steel are vertical
It is curved（Width direction is bent）Inside radius of the bend be more than 1.5 times of width, plane bending of flat steel（Thickness direction is bent）Inside radius of the bend
More than 2 times thickness, the connection of vertical drawing line and horizontal grounding objects can be used and first twist and warp, then carry out overlap welding, twist and warp diameter
It is reliable in order to connect when band steel is welded with Zinc-coated angle steel stick grounding body more than band steel width, except in the progress of its contact site both sides
Welding is outer, and the arc clamp curved by band steel is also welded with Grounding Grids；
Wherein in above-mentioned step six, after the laying connection of integrated ground system segment, rammed using plain soil or clay backfilling
Real, every layer of backfill thickness control is manually tamped in 250~300mm using the cooperation of small-sized ramming machine；
Wherein in above-mentioned step seven, non magnetic steel pipe is arranged when drawing in grounded screen（A100mm, wall thickness 4mm）Protective grounding is drawn
Outlet, which is located under structure base slab lowest level structure reinforcing bars, on concrete cover, and ensures that ground connection is drawn
Line is not contacted with structure reinforcing bars, if line position is at slope on grounding lead, suitably to adjust non-magnetic steel length of tube, it is ensured that be higher by
Plate face 100mm, galvanized steel plain sheet seal ring（A292, thickness 10mm）Sealing welding is on outer wall of steel pipe, fixed block（10mm*20mm*
20mm galvanized steel plain sheets）It is welded on steel pipe inner wall, steel pipe surface applies antirust paint（Coal-tar epoxy thick-slurry type antirust paint）, in steel pipe
Silicon rubber filling is closely knit, and the 0.3MPa water pressure tests are impermeable, and it is 100mm that ground outlet, which reserves steel pipe opening length,；
Wherein in above-mentioned step eight, the grounded lead-out wire of grounded screen is drawn, and is reserved grounded screen and is connected with each other with structure reinforcing bars
Condition（That is pre-embedded steel slab）, pre-embedded steel slab passes through main reinforcement in A16 round steel and structural upright and welds, commissure full weld, after welding
Preservative treatment is carried out to weld seam, pre-embedded steel slab outer surface exposes to structural column surface, and position is higher by structure base slab 500mm, and
Apparent label is made on column where steel plate, ground outlet is attached by cable to each ground connection busbar, is connect to forceful electric power
The cable connection of ground busbar is completed by electric substation's profession, and the cable connection to light current ground connection busbar is complete by station power and lighting profession
At pre-embedded steel slab only makees reservation conditions with the cable connection of each ground connection busbar；
Wherein in above-mentioned step nine, whole process is in strict accordance with design drawing and GB50169-2006《Electric device is installed
ENG land is constructed and acceptance specification》Construction, every section construction after be detected, measurement method according to《Earthing or grounding means power frequency
Survey is led in the measurement of characterisitic parameter》（DL/T475-2006）It carries out, when such as finding that earth resistance is more than design requirement, need to take
Remedial measure, tissue supervisor and construction unit carry out in-site measurement when measurement, determine that ground resistance meets the requirements.
According to above-mentioned technical proposal, the proportioning of friction reducer and water in the step 3 is friction reducer：Water=0.4 ~ 0.6:
1, Grounding Grids are Zinc-coated angle steel bar material.
According to above-mentioned technical proposal, backfill requirement in the step 4 with fine earth be not allow for brick, bulk stone,
Mixed mud is built and rubbish.
According to above-mentioned technical proposal, welding in the step 5 drives away water it should be noted that the preceding dry heat tool die of welding
Gas, using banister brush or other soft article cleaning molds, clamping mold and the adaptation for checking mould contact surface, mold folder is
For open-close module, the tight ness rating of mold folder has an impact the effect of welding, conscientiously checks that mold presss from both sides before welding starts,
And make the appropriate adjustments, the adaptation of the adaptation of mold folder and mold is adjusted optimally, is powered by installation and adjustment mold folder
Carry out exothermic weld, timely cleaning mold after welding.
According to above-mentioned technical proposal, the aperture of hole is Ф 120-150mm in the step 3.
Compared with prior art, the beneficial effects of the invention are as follows：1. drilling out hole with drilling machine, hole internal water accumulation is drained
（Prevent pulp dilution）Afterwards, Grounding Grids are put into and are welded with horizontal grounding objects, are finally pressed into slurry, until full of entire
Friction reducer fill area, every meter of friction reducer dosage about 20Kg, and ensure that Grounding Grids are located at friction reducer fill area centre, it drops
Resist and the proportioning of water are friction reducer：Water=0.4 ~ 0.6:1, be conducive to reduce resistance well, improve anti-corrosion capability, it can
Step voltage is reduced, making the person, the safety is improved；
2. steel pipe surface applies antirust paint（Coal-tar epoxy thick-slurry type antirust paint）, silicon rubber fills closely knit, 0.3MPa water in steel pipe
Pressure experiment is impermeable, and it is 100mm that ground outlet, which reserves steel pipe opening length, is conducive to promote antiseepage outlet capacity, while advantageous
In antirust.
Description of the drawings
Fig. 1 is the mud stone class geology Grounding Measure of GSM flow chart of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of mud stone class geology Grounding Measure of GSM includes the following steps：Step 1, standby material and scene are accurate
It is standby；Step 2, measurement and positioning and grooving；Step 3, Grounding Grids laying；Step 4, horizontal grounding objects laying；Step 5,
Earthed system is welded；Step 6, trench backfill；Step 7, ground outlet；Step 8, ground outlet connect with ground connection busbar
It connects；Step 9, ground resistance measure；
Wherein in above-mentioned step one, by following 50*6 zinc-coated flat steel sheets horizontal grounding objects, and single length >=6m；50*50*5、
The Grounding Grids of 2500mm；The Q235 galvanized steel plain sheets of 100mm*100mm*10mm；The grounding lead of 50mm*5mm, T2 purple band steel
Outlet is got all the ready, and guarantee has corresponding constructing operation face, and substrate leveling is finished, checked and accepted by foundation pit bearing capacity, working face synthesis
Grounded screen surveying setting-out spreads lime and marks and checked and accepted by management after hours, and site operation electricity consumption power supply sockets in place；
Wherein in above-mentioned step two, unwrapping wire, agent structure earth excavation are measured according to earthing or grounding means floor plan
And the smooth rear progress surveying setting-out of substrate, it is marked with lime, after composite earthing network measurement and positioning, is built by design requirement distance
The rear excavation grooves of object 1m or so are built, excavation size is 800*800, and length is determined that channel away compares engineering drawing by design drawing
Paper, the groove at bottom plate local subsidence also answer local subsidence, sink laying when do circular arc of the turning radius not less than 5m and handle；
Wherein in above-mentioned step three, hole is drilled out with drilling machine, drains hole internal water accumulation（Prevent pulp dilution）Afterwards, it is put into
Grounding Grids are simultaneously welded with horizontal grounding objects, are finally pressed into slurry, until being full of entire friction reducer fill area, friction reducer is used
Every meter of about 20Kg is measured, and ensures that Grounding Grids are located at friction reducer fill area centre；
Wherein in above-mentioned step four, ditch internal water accumulation is drained, lay horizontal grounding objects and is connect as required with adjacently body,
Horizontal grounding objects are 50*6 zinc-coated flat steel sheets, stand up laying, horizontal grounding objects are under bed course at 825mm, and horizontal grounding objects are in bottom plate
Local subsidence is also answered in laying at local subsidence, and circular arc of the turning radius not less than 5m should be done by sinking when laying is handled, and is being in the milk
It is preceding that bottom support is carried out to horizontal grounding objects, facilitate drag reducing agent slurry to wrap up, ensures that horizontal grounding objects should be at friction reducer filling
District center position, the size of friction reducer package level grounding body band steel are 150mm*100mm, every meter of friction reducer dosage about 20kg,
After slurry tentatively solidification, element soil or clay are backfilled, and tamp；
Wherein in above-mentioned step five, grounding body welding uses exothermic weld, horizontal grounding objects welding form to be divided into word weldering
It connects, T words weld, cross welding and the welding with Grounding Grids, firm welding, no rosin joint, desoldering, solder skip, grounding flat steel are vertical
It is curved（Width direction is bent）Inside radius of the bend be more than 1.5 times of width, plane bending of flat steel（Thickness direction is bent）Inside radius of the bend
More than 2 times thickness, the connection of vertical drawing line and horizontal grounding objects can be used and first twist and warp, then carry out overlap welding, twist and warp diameter
It is reliable in order to connect when band steel is welded with Zinc-coated angle steel stick grounding body more than band steel width, except in the progress of its contact site both sides
Welding is outer, and the arc clamp curved by band steel is also welded with Grounding Grids；
Wherein in above-mentioned step six, after the laying connection of integrated ground system segment, rammed using plain soil or clay backfilling
Real, every layer of backfill thickness control is manually tamped in 250~300mm using the cooperation of small-sized ramming machine；
Wherein in above-mentioned step seven, non magnetic steel pipe is arranged when drawing in grounded screen（A100mm, wall thickness 4mm）Protective grounding is drawn
Outlet, which is located under structure base slab lowest level structure reinforcing bars, on concrete cover, and ensures that ground connection is drawn
Line is not contacted with structure reinforcing bars, if line position is at slope on grounding lead, suitably to adjust non-magnetic steel length of tube, it is ensured that be higher by
Plate face 100mm, galvanized steel plain sheet seal ring（A292, thickness 10mm）Sealing welding is on outer wall of steel pipe, fixed block（10mm*20mm*
20mm galvanized steel plain sheets）It is welded on steel pipe inner wall, steel pipe surface applies antirust paint（Coal-tar epoxy thick-slurry type antirust paint）, in steel pipe
Silicon rubber filling is closely knit, and the 0.3MPa water pressure tests are impermeable, and it is 100mm that ground outlet, which reserves steel pipe opening length,；
Wherein in above-mentioned step eight, the grounded lead-out wire of grounded screen is drawn, and is reserved grounded screen and is connected with each other with structure reinforcing bars
Condition（That is pre-embedded steel slab）, pre-embedded steel slab passes through main reinforcement in A16 round steel and structural upright and welds, commissure full weld, after welding
Preservative treatment is carried out to weld seam, pre-embedded steel slab outer surface exposes to structural column surface, and position is higher by structure base slab 500mm, and
Apparent label is made on column where steel plate, ground outlet is attached by cable to each ground connection busbar, is connect to forceful electric power
The cable connection of ground busbar is completed by electric substation's profession, and the cable connection to light current ground connection busbar is complete by station power and lighting profession
At pre-embedded steel slab only makees reservation conditions with the cable connection of each ground connection busbar；
Wherein in above-mentioned step nine, whole process is in strict accordance with design drawing and GB50169-2006《Electric device is installed
ENG land is constructed and acceptance specification》Construction, every section construction after be detected, measurement method according to《Earthing or grounding means power frequency
Survey is led in the measurement of characterisitic parameter》（DL/T475-2006）It carries out, when such as finding that earth resistance is more than design requirement, need to take
Remedial measure, tissue supervisor and construction unit carry out in-site measurement when measurement, determine that ground resistance meets the requirements.
According to above-mentioned technical proposal, the proportioning of friction reducer and water in step 3 is friction reducer：Water=0.4 ~ 0.6:1, it hangs down
Directly body is Zinc-coated angle steel bar material, is conducive to the effect for promoting friction reducer.
According to above-mentioned technical proposal, the backfill requirement in step 4 is not allow for brick, bulk stone, mixed mud with fine earth
Civil engineering is built and rubbish, is conducive to make to banket more to tamp, and prevents from influencing earthing effect.
According to above-mentioned technical proposal, welding in step 5 is driven away aqueous vapor, is made it should be noted that the preceding dry heat tool die of welding
With banister brush or other soft article cleaning molds, clamping mold and the adaptation for checking mould contact surface, mold folder is to be used for
Open-close module, the tight ness rating of mold folder has an impact the effect of welding, conscientiously checks that mold presss from both sides before welding starts, and do
The adaptation of the adaptation of mold folder and mold is adjusted optimally, is powered and carries out by appropriate adjustment, installation and adjustment mold folder
Exothermic weld, timely cleaning mold after welding are conducive to remove the oxide layer on band steel, also help copper when preventing operation
Liquid leaks out from gap.
According to above-mentioned technical proposal, the aperture of hole is Ф 120-150mm in step 3, is conducive to place vertical ground connection
Body.
Based on above-mentioned, it is an advantage of the current invention that the present invention drills out hole with drilling machine, hole internal water accumulation is drained（It prevents
Pulp dilution）Afterwards, Grounding Grids are put into and are welded with horizontal grounding objects, are finally pressed into slurry, until being hindered full of entire drop
Agent fill area, every meter of friction reducer dosage about 20Kg, and ensure that Grounding Grids are located at friction reducer fill area centre, friction reducer
Proportioning with water is friction reducer：Water=0.4 ~ 0.6:1, be conducive to reduce resistance well, improve anti-corrosion capability, can reduce
Step voltage, making the person, the safety is improved；Non magnetic steel pipe is arranged when drawing in grounded screen（A100mm, wall thickness 4mm）Protective grounding
Lead-out wire, the steel pipe bottom are located under structure base slab lowest level structure reinforcing bars, on concrete cover, and ensure grounding lead
Outlet is not contacted with structure reinforcing bars, if line position is at slope on grounding lead, suitably to adjust non-magnetic steel length of tube, it is ensured that high
Go out plate face 100mm, galvanized steel plain sheet seal ring（A292, thickness 10mm）Sealing welding is on outer wall of steel pipe, fixed block（10mm*20mm*
20mm galvanized steel plain sheets）It is welded on steel pipe inner wall, steel pipe surface applies antirust paint（Coal-tar epoxy thick-slurry type antirust paint）, in steel pipe
Silicon rubber filling is closely knit, and the 0.3MPa water pressure tests are impermeable, and it is 100mm that ground outlet, which reserves steel pipe opening length, is conducive to
Antiseepage outlet capacity is promoted, while being conducive to antirust.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of mud stone class geology Grounding Measure of GSM, includes the following steps：Step 1, standby material and scene prepare；Step 2,
Measurement and positioning and grooving；Step 3, Grounding Grids laying；Step 4, horizontal grounding objects laying；Step 5, earthed system weldering
It connects；Step 6, trench backfill；Step 7, ground outlet；Step 8, ground outlet are connect with ground connection busbar；Step 9,
Ground resistance measures；It is characterized in that：
Wherein in above-mentioned step one, by following 50*6 zinc-coated flat steel sheets horizontal grounding objects, and single length >=6m；50*50*5、
The Grounding Grids of 2500mm；The Q235 galvanized steel plain sheets of 100mm*100mm*10mm；The ground outlet of 50*6 zinc-coated flat steel sheets is standby
Together, constructing operation face, substrate leveling are finished, are checked and accepted by foundation pit bearing capacity, working face composite earthing network surveying setting-out has worked
It spreads lime after finishing to mark and check and accept by management, site operation electricity consumption power supply sockets in place；
Wherein in above-mentioned step two, unwrapping wire, agent structure earth excavation are measured according to earthing or grounding means floor plan
And the smooth rear progress surveying setting-out of substrate, it is marked with lime, after composite earthing network measurement and positioning, is built by design requirement distance
The rear excavation grooves of object 1m or so are built, excavation size is 800*800, and length is determined that channel away compares engineering drawing by design drawing
Paper, the groove at bottom plate local subsidence also answer local subsidence, sink laying when do circular arc of the turning radius not less than 5m and handle；
Wherein in above-mentioned step three, hole is drilled out with drilling machine, after draining hole internal water accumulation, be put into Grounding Grids and with
Horizontal grounding objects weld, and are finally pressed into slurry, until being full of entire friction reducer fill area, every meter of friction reducer dosage about 20Kg；
Wherein in above-mentioned step four, ditch internal water accumulation is drained, lay horizontal grounding objects and is connect as required with adjacently body,
Horizontal grounding objects are 50*6 zinc-coated flat steel sheets, stand up laying, horizontal grounding objects are under bed course at 825mm, and horizontal grounding objects are in bottom plate
Local subsidence is also answered in laying at local subsidence, and circular arc of the turning radius not less than 5m should be done by sinking when laying is handled, and is being in the milk
It is preceding that bottom support is carried out to horizontal grounding objects, facilitate drag reducing agent slurry to wrap up, the size of friction reducer package level grounding body band steel
Element soil or clay are backfilled, and tamp after slurry tentatively solidification for 150mm*100mm, every meter of friction reducer dosage about 20kg；
Wherein in above-mentioned step five, grounding body welding uses exothermic weld, horizontal grounding objects welding form to be divided into word weldering
It connects, T words weld, cross welding and the welding with Grounding Grids, firm welding, no rosin joint, desoldering, solder skip, grounding flat steel are vertical
It is curved（Width direction is bent）Inside radius of the bend be more than 1.5 times of width, plane bending of flat steel（Thickness direction is bent）Inside radius of the bend
More than 2 times thickness, the connection of vertical drawing line and horizontal grounding objects can be used and first twist and warp, then carry out overlap welding, twist and warp diameter
It is reliable in order to connect when band steel is welded with Zinc-coated angle steel stick grounding body more than band steel width, except in the progress of its contact site both sides
Welding is outer, and the arc clamp curved by band steel is also welded with Grounding Grids；
Wherein in above-mentioned step six, after the laying connection of integrated ground system segment, rammed using plain soil or clay backfilling
Real, every layer of backfill thickness control is manually tamped in 250~300mm using the cooperation of small-sized ramming machine；
Wherein in above-mentioned step seven, non-magnetic steel protection of pipe ground outlet, the steel pipe bottom are set when grounded screen is drawn
Under structure base slab lowest level structure reinforcing bars, on concrete cover, and ensure ground outlet not with structure reinforcing bars
Contact, if line position is at slope on grounding lead, suitably adjust non-magnetic steel length of tube, it is ensured that it is higher by plate face 100mm, it is zinc-plated
On outer wall of steel pipe, fixed block is welded on steel pipe inner wall steel plate water-stopping ring sealing welding, steel pipe surface painting antirust paint, in steel pipe
Silicon rubber filling is closely knit, and the 0.3MPa water pressure tests are impermeable, and it is 100mm that ground outlet, which reserves steel pipe opening length,；
Wherein in above-mentioned step eight, the grounded lead-out wire of grounded screen is drawn, and is reserved grounded screen and is connected with each other with structure reinforcing bars
Condition, pre-embedded steel slab welded by main reinforcement in A16 round steel and structural upright, and commissure full weld prevents weld seam after welding
Corruption processing, pre-embedded steel slab outer surface expose to structural column surface, and position is higher by structure base slab 500mm, and the column where steel plate
On make apparent label, ground outlet is attached to each ground connection busbar by cable, to forceful electric power ground connection busbar cable
Connection is completed by electric substation's profession, and the cable connection to light current ground connection busbar is completed by station power and lighting profession, pre-embedded steel slab
Cable connection with each ground connection busbar only makees reservation conditions；
Wherein in above-mentioned step nine, whole process is in strict accordance with design drawing and GB50169-2006《Electric device is installed
ENG land is constructed and acceptance specification》Construction, every section construction after be detected, measurement method according to《Earthing or grounding means power frequency
Survey is led in the measurement of characterisitic parameter》It carries out, when such as finding that earth resistance is more than design requirement, need to adopt remedial measures, measure
When tissue supervisor and construction unit carry out in-site measurement, determine that ground resistance meets the requirements.
2. a kind of mud stone class geology Grounding Measure of GSM according to claim 1, it is characterised in that：Drop in the step 3
Resist and the proportioning of water are friction reducer：Water=0.4 ~ 0.6:1, Grounding Grids are Zinc-coated angle steel bar material.
3. a kind of mud stone class geology Grounding Measure of GSM according to claim 1, it is characterised in that：Returning in the step 4
Requirement of banketing is not allow for brick, bulk stone, mixed mud building and rubbish with fine earth.
4. a kind of mud stone class geology Grounding Measure of GSM according to claim 1, it is characterised in that：It is welded in the step 5
It should be noted that dry heat tool die before welding, drives away aqueous vapor, uses banister brush or other soft article cleaning molds, clamping die
Have and check that the adaptation of mould contact surface, mold folder are effect of the tight ness rating that mold presss from both sides to welding for open-close module
Have an impact, conscientiously checks that mold presss from both sides before welding starts, and make the appropriate adjustments, installation and adjustment mold folder, by the close of mold folder
The right adaptation with mold is adjusted optimally, and is powered and is carried out exothermic weld, timely cleaning mold after welding.
5. a kind of mud stone class geology Grounding Measure of GSM according to claim 1, it is characterised in that：Hole in the step 3
Aperture be Ф 120-150mm.
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Cited By (2)
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| CN113394634A (en) * | 2021-06-22 | 2021-09-14 | 中国电建集团河南工程有限公司 | Construction method of three-dimensional compound grounding grid in desert soil |
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| CN113394634A (en) * | 2021-06-22 | 2021-09-14 | 中国电建集团河南工程有限公司 | Construction method of three-dimensional compound grounding grid in desert soil |
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