Mumchenga, poto yamwala ndi dothi lina lokhala ndi resistivity yaikulu ya dziko lapansi, kuti akwaniritse zofunikira zapansikukhazikitsakukaniza, maziko

Gridi yopangidwa ndi matupi angapo oyambira molumikizana nthawi zambiri imagwiritsidwa ntchito.Komabe, nthawi zina zinthu zambiri zachitsulo zimafunika komanso

malo okhala pansi ndi aakulu kwambiri, choncho nthawi zambiri zimakhala zovuta kukwaniritsa zofunikira zokhazikika.Panthawiyi, tikhoza kuyesa kuchepetsa dziko lapansi

resistivity dothi pafupi ndi thupi lokhazikika, komanso kukwaniritsa cholinga chochepetsera kukana kwapansi.

1. Gwiritsirani ntchito dothi lochepa mphamvu (monga njira yosinthira nthaka)

Dongo, peat, dothi lakuda ndi dongo lamchenga zimagwiritsidwa ntchito m'malo mwa dothi loyambirira ndi mphamvu yamagetsi yamagetsi, ndi coke ndi makala.

angagwiritsidwenso ntchito ngati kuli kofunikira.Mtundu wolowa m'malo ndi 1 ~ 2m kuzungulira ma elekitirodi oyambira ndi 1/3 ya ma elekitirodi oyambira pansi.

pafupi ndi pansi.Pambuyo pa chithandizo chotere, kukana kwapansi kumatha kuchepetsedwa kukhala pafupifupi 3/5 yamtengo woyambirira.

2. Mankhwala opangira monga kuwonjezera mchere

Onjezani mchere, malasha, fumbi la carbon, phulusa la ng'anjo, phulusa la coke, ndi zina zotero ku dothi lozungulira thupi loyatsira pansi kuti nthaka ikhale yabwino.

Chomwe chimagwiritsidwa ntchito kwambiri ndi mchere.Chifukwa mchere umapangitsa kuti nthaka isamagwire bwino ntchito, sungagwirizane ndi nyengo

kusintha,ndipo mtengo wake ndi wotsika.Njira yochizira ndiyo kukumba dzenje lokhala ndi m'mimba mwake pafupifupi 0.5 ~ 1.0m kuzungulira thupi lililonse, ndikudzaza.

mchere ndi nthakamu dzenje wosanjikiza ndi wosanjikiza.Nthawi zambiri, makulidwe a mcherewo ndi pafupifupi 1cm, ndipo makulidwe a nthaka ndi pafupifupi 10cm.Aliyense wosanjikiza

mchere ayenera kukhalakuthiridwa ndi madzi.Kumwa mchere wa tubular grounding body ndi za 30-40kg;Njirayi imatha kuchepetsa pansi

kukaniza kuchoyambirira (1/6-1/8) cha dothi lamchenga ndi (2/5-1/3) cha dongo lamchenga.Ngati muwonjezera za 10kg makala, zotsatira zake zidzakhala bwino.Monga makala

ndi cholimbakondakitala, sichidzasungunuka, kulowa mkati ndi kuwononga, kotero nthawi yake yogwira ntchito ndi yaitali.Kwa chitsulo chathyathyathya, zitsulo zozungulira ndi zina zofanana

kukhazikitsamatupi, zotsatira zabwino zitha kupezeka pogwiritsa ntchito njira zomwe zili pamwambazi.Komabe, njirayi ilinso ndi zovuta zake, monga zotsatira zochepa

pa miyala ndinthaka yokhala ndi miyala yambiri;Kukhazikika kwa thupi lokhazikika kumachepetsedwa;Iwo imathandizira dzimbiri pansi thupi;Pansi

kukaniza kudzaterokuwonjezeka pang'onopang'ono chifukwa cha kusungunuka kwapang'onopang'ono ndi kutayika kwa mchere.Chifukwa chake, iyenera kuthandizidwa kamodzi pazaka ziwiri pambuyo pa chithandizo chamanja.

3. Akunjakukhazikitsa

Makamaka m'madera amapiri, pamene kukana kwapansi kumafunika kukhala kochepa komanso kovuta kufika mu situ, ngati pali gwero la madzi kapena

dothi lokhala ndi coefficient otsika kukana pafupi, malo angagwiritsidwe ntchito kupanga maelekitirodi grounding kapena kuyala pansi pamadzi grounding gululi.Ndiye, ntchito

waya wapansi (monga chitsulo chophwanyika) kuti agwirizane ngati maziko akunja.Komabe, tisaiwale kuti kunja maziko

chipangizocho chipewe njira ya oyenda kuti chiteteze kugwedezeka kwa magetsi chifukwa cha voteji;Powoloka msewu waukulu, kukwiriridwa kuya kwa

kutsogola kunja sikuyenera kuchepera 0.8m.

4. Conductive konkire

Mpweya wa carbon umasakanizidwa mu simenti kuti ugwiritsidwe ntchito ngati electrode yoyambira pansi.Mwachitsanzo, pafupifupi 100kg ya carbon fiber imawonjezeredwa mu 1m3 ya simenti

kupanga hemispherical (1m m'mimba mwake) electrode grounding.Kupyolera muyeso, mphamvu yake yokhazikika yokhazikika (poyerekeza

ndi konkire wamba) amatha kuchepetsedwa ndi 30%.Njirayi imagwiritsidwa ntchito nthawi zambiri poteteza mphezi ndi zida zoyatsira pansi.Mu

kuti muchepetse kukana kwapang'onopang'ono, ma elekitirodi opangidwa ndi singano amathanso kuyikidwa mu conductive.

konkire nthawi yomweyo, kuti corona yotulutsa imatha kupitiliza kugwetsa mafunde ndi mpweya wa kaboni kuchokera pansonga ya singano, yomwe ili ndi

zotsatira zodziwikiratu pakuchepetsa kukana kuyika maziko.

5. Mankhwala mankhwala ndi kukoka kuchepetsa wothandizila

The kukana kuchepetsa wothandizila kugwiritsa ntchito carbon powder ndi quicklime monga zopangira zazikulu zingagwiritsidwe ntchito m'nthaka kwa nthawi yaitali ndipo adzatero.

osatayika chifukwa cha madzi apansi chifukwa alibe dielectric, kotero amatha kupeza nthawi yayitali yopanda kuipitsidwa komanso yokhazikika yotsika.

kukana (pafupifupi 1/2 kutsika kuposa pamenepo musanagwiritse ntchito chochepetsera kukana kuchiritsa nthaka).Kwa hard rock plate zone, njira ya

waya wokwirira pansi ndi wothandizira kuchepetsa kukana ndikothandiza kwambiri, ndipo kukana kwake kumatha kuchepetsedwa ndi 40% poyerekeza.

ndi yokwirira mawaya apansi okha.Komanso, njira imeneyi akhoza kupeza zotsatira zabwino bola ngati powdery kukana kuchepetsa wothandizira kapena

yaitali kuchita kukana kuchepetsa wothandizila ndi owazidwa mu ngalande anafukula ndi anaika ndi grounding waya, ndiyeno wakale nthaka backfilled.

6. Njira yokwirira dzenje lakuya

Njirayi yakhala ikudziwika kunja kwa nthawi yaitali, ndipo yapeza zotsatira zabwino pakugwiritsa ntchito bwino.M'zaka zaposachedwa, China idateronso

anayamba kugwiritsa ntchito njira yatsopanoyi yochepetsera kukana.Kutalika kwa thupi loyimirira lomwe limagwiritsidwa ntchito mwanjira imeneyi nthawi zambiri ndi 5 ~ 10m

kutengera momwe zinthu ziliri.Ngati ndi yaitali, zotsatira zake sizidzakhala zoonekeratu ndipo kumanga kudzakhala kovuta.Kuyika pansi

thupi zambiri utenga Φ 20 ~ 75mm zitsulo zozungulira.Chikoka cha zitsulo zozungulira ndi ma diameter osiyanasiyana pa kukana kwapansi kumakhala kwambiri

yaying'ono.Njirayi ikugwiritsidwa ntchito ku nyumba zodzaza anthu kapena malo opapatiza kumene ma gridi oyambira amayalidwa.Muzochitika izi, zimakhala zovuta

pezani malo oyenera a elekitirodi yoyika pansi ndi njira zachikhalidwe, ndipo mtunda wotetezeka sungakhale wotsimikizika.Ngakhale a

chitetezo chikhoza kutsimikiziridwa pophimba thupi lokhazikika ndi asphalt insulating layer, ntchito yomanga ndi mtengo woyika ndi

kuchuluka.Njira yokwirira mozama ndiyo njira yothandiza kwambiri pa dothi lamchenga, chifukwa magawo ake amchenga ambiri amakhala pamwamba.

mkati mwa 3m, pamene resistivity nthaka mu wosanjikiza kwambiri ndi otsika.Kuphatikiza apo, njirayi imagwiranso ntchito kumadera amiyala yamwala.

Pakumanga Φ Makina ang'onoang'ono a auger kapena kubowola ndi mainchesi 50mm ndi kupitilira apo.Kukwiriridwa mu dzenje lobowola Φ 20 ~ 75mm

kuzungulira zitsulo pansi thupi, ndiyeno kudzazidwa ndi mpweya matope (wosakaniza mpweya CHIKWANGWANI madzi slurry) kapena slurry.Pomaliza, angapo maziko

matupi omwe ali ndi chithandizo chomwecho amalumikizidwa mofanana kuti apange thupi lokhazikika.Thupi loyambira lopangidwa ndi njira iyi

sichikhudzidwa kwambiri ndi nyengo ndipo imatha kupeza kukana kokhazikika.Pa nthawi yomweyi, chifukwa cha kuikidwa m'manda mozama, mphamvu yamagetsi ingakhalenso

kuchepetsedwa kwambiri, zomwe zimapindulitsa kwambiri kuteteza chitetezo chaumwini.Njirayi ndi yabwino pomanga, yotsika mtengo komanso

chodabwitsa kwenikweni, chomwe chidzatchuka ndikugwiritsidwa ntchito.