Mujecha, pani yedombo uye mamwe mavhu ane hombe yepasi resistivity, kuitira kuti isangane nezvinodiwa zvepasigroundingkuramba, a grounding
grid inoumbwa nemitumbi yakawanda yekugadzika yakafanana inowanzoshandiswa.Zvisinei, dzimwe nguva zvinhu zvakawanda zvesimbi zvinodiwa uye
grounding nzvimbo yakakura kwazvo, saka kazhinji zvakaoma kuwana inodiwa grounding kuramba.Panguva ino, tinogona kuedza kuderedza pasi
resistivity yevhu pedyo nemuviri wepasi, uye zvakare kuzadzisa chinangwa chekudzikisa pasi pasi.
1. Shandisa ivhu rakaderera rekudzivirira (kureva nzira yekutsiva ivhu)
Ivhu, peat, ivhu dema uye ivhu rejecha rinoshandiswa kutsiva ivhu rekutanga nepamusoro pemagetsi kuramba coefficient, uye coke uye marasha.
inogonawo kushandiswa kana zvichidiwa.Iyo yekutsiva siyana ndeye 1 ~ 2m yakatenderedza electrode yepasi uye 1/3 yegirodhi yepasi pa
pedyo nerutivi rwepasi.Mushure mekurapa kwakadaro, kupikisa kwepasi kunogona kuderedzwa kusvika kune 3/5 yehuwandu hwepakutanga.
2. Artificial treatment sekuwedzera munyu
Wedzera munyu, coal cinder, kabhoni guruva, muto wevira, coke ash, nezvimwewo kune ivhu rakatenderedza muviri wepasi kuti uvandudze conductivity yevhu.
Inonyanya kushandiswa imunyu.Nekuti munyu une mhedzisiro yakanaka pakuvandudza ivhu rekudzivirira coefficient, ishoma pasi pemwaka
shanduko,uye mutengo wakaderera.Nzira yekurapa ndeyekuchera gomba rine dhayamita rinosvika 0.5 ~ 1.0m kutenderedza muviri wega wega wepasi, uye kuzadza
munyu nevhumugomba layer by layer.Kazhinji, ukobvu hwemunyu hunoita 1cm, uye ukobvu hwevhu hunosvika 10cm.Imwe neimwe layer
yemunyu inofanira kuvayakanyoroveswa nemvura.Kushandiswa kwemunyu kwetubular grounding body inenge 30-40kg;Iyi nzira inogona kuderedza pasi
resistance kuneyepakutanga (1/6-1/8) yevhu rejecha uye (2/5-1/3) yevhu rejecha.Kana iwe ukawedzera nezve 10kg marasha, mhedzisiro ichava nani.Semarasha
yakasimbaconductor, haizonyungudika, yakapinda uye yakasvibiswa, saka nguva yayo inoshanda yakareba.Yesimbi yakatsetseka, simbi yakatenderera uye zvimwe zvakafanana
groundingmiviri, migumisiro iri nani inogona kuwanikwa kuburikidza nekushandisa nzira dziri pamusoro apa.Zvisinei, nzira iyi inewo zvipingamupinyi, zvakadai semagumisiro mashoma
pamatombo uyeivhu rine matombo akawanda;Kugadzikana kwemuviri wepasi kunoderedzwa;Ichamhanyisa kukora kwemuviri wepasi;Pasi
kuramba kuchaitakuwedzera zvishoma nezvishoma nekuda kwekunyungudika zvishoma nezvishoma uye kurasikirwa kwemunyu.Naizvozvo, inoda kurapwa kamwe chete makore maviri mushure mekurapa nemawoko.
3. Kunzegrounding
Kunyanya munzvimbo dzine makomo, apo kukosha kwekudzivirira kwepasi kunodiwa kuve diki uye kunetsa kusvika mu situ, kana paine sosi yemvura kana
ivhu rine low resistance coefficient padyo, nzvimbo yacho inogona kushandiswa kugadzira grounding electrode kana kuisa pasi pemvura grounding grid.Zvadaro, shandisa
waya yepasi (yakadai sesimbi yakatsetseka) kuti ibatanidze senzvimbo yekunze.Zvisinei, zvinofanira kucherechedzwa kuti zvokunze grounding
mudziyo unofanirwa kudzivirira nzira yevanofamba netsoka kudzivirira kuvhunduka kwemagetsi kunokonzerwa nedanho voltage;Pakuyambuka mugwagwa, kudzika kwakadzika kwe
mutobvu wekunze haungadarike 0.8m.
4. Conductive kongiri
Carbon fiber inosanganiswa kuita simende kuti ishandiswe semagetsi ekuisa pasi.Semuenzaniso, inenge 100kg ye carbon fiber inowedzerwa mu 1m3 ye simenti
kugadzira hemispherical (1m dhayamita) yekugadzika electrode.Kuburikidza nechiyero, simba rayo frequency grounding resistance (kuenzanisa
nekongiri yakajairika) kazhinji inogona kudzikiswa ne30%.Iyi nzira inowanzoshandiswa pakudzivirira mheni uye midziyo yekumisa pasi.In
kuitira kuti uwedzere kudzikisira kupokana kwepasi, iyo tsono yakaumbwa yepasi electrode inogona zvakare kunyudzwa mune conductive.
kongiri panguva imwe chete, kuitira kuti corona yekuburitsa inogona kuramba ichivhuvhuta uye kabhoni fiber kubva kune tsono tip, iyo ine
mhedzisiro iri pachena pakudzikisa kupesvedzera grounding kuramba.
5. Kurapa kwemakemikari nekukwevera kuderedza mumiririri
Iyo inodzivirira inoderedza mumiriri uchishandisa kabhoni poda uye quicklime sezvo chikuru mbishi zvinhu zvinogona kushandiswa muvhu kwenguva yakareba uye ichaita.
kwete kurasika nekuda kwemvura yepasi nekuti haina dielectric, saka inogona kuwana kusvibiswa-isina kusvibiswa uye kugadzikana kwakadzika pasi pasi.
kuramba (inenge 1/2 yakaderera pane iyo isati yashandisa inodzikisira mumiririri kurapa ivhu).Kune hard rock plate zone, nzira ye
kuviga waya yekumisa uye kuramba kudzikisa mumiririri inoshanda chaizvo, uye kuramba kwayo kwepasi kunogona kudzikiswa neinosvika 40% zvichienzaniswa.
neicho chekuviga waya yekudzika chete.Mukuwedzera, iyi nzira inogona kuwana zvibereko zvakanaka chero bedzi powdery resistance inoderedza mumiririri kana
refu-kuita kushorwa kuderedza mumiririri inosaswa mugoronga akacherwa uye akaradzikwa negrounding waya, uye ipapo ivhu yekare iri backfilled.
6. Borehole deep burial method
Iyi nzira yave ichishumwa kune dzimwe nyika kwenguva yakareba, uye yakawana migumisiro yakanaka mukushandiswa kunoshanda.Mumakore achangopfuura, China zvakare
akatanga kushandisa nzira itsva iyi yekuderedza kuramba.Kureba kweiyo vertical grounding body inoshandiswa nenzira iyi kazhinji 5 ~ 10m
zvichienderana nemamiriro ezvinhu e geological.Kana yakareba, mugumisiro hauzove wakajeka uye kuvaka kuchava kwakaoma.The grounding
muviri unowanzo tora Φ 20 ~ 75mm simbi yakatenderera.Kufurira kwesimbi yakatenderedza ine madhayamita akasiyana pakupikisa kwepasi kwakanyanya
diki.Iyi nzira inoshandiswa kune zvivakwa zvakatsvikinyidzana kana nzvimbo dzakamanikana uko magidhi epasi anoiswa.Mumamiriro ezvinhu aya, zvakaoma kuita
tsvaga nzvimbo yakakodzera yekuvigwa yekumisa electrode nemaitiro echinyakare, uye nzvimbo yakachengeteka haigone kuvimbiswa.Kunyangwe iyo
chengetedzo inogona kuoneswa nekuvhara muviri wepasi neasphalt insulating layer, basa rekuvaka uye mari yekuisa iri.
yakawedzera.Nzira yekuviga yakadzika ndiyo nzira inonyanya kushanda yevhu rejecha, nekuti mazhinji ejecha rayo ari muvhu repamusoro.
mukati me3m, nepo ivhu resistivity munzvimbo yakadzika yakaderera.Uye zvakare, iyo nzira inoshandawo kune ane rocky rock plate nzvimbo.
Panguva yekuvaka Φ Diki rekushandisa auger kana muchina wekuchera une dhayamita ye50mm zvichikwira.Kuvigwa mugomba rakacherwa Φ 20~75mm
simbi yakatenderedza muviri wepasi, wobva wazadzwa nekabhoni dhaka (yakavhenganiswa nekabhoni fiber mvura inotsvedza) kana slurry.Pakupedzisira, akawanda grounding
miviri ine mabatirwo akafanana inobatanidzwa mukufambirana kuita muviri wakakwana wepasi.Muviri wepasi wakagadzirwa neiyi nzira
haina kukanganiswa nemwaka uye inogona kuwana yakagadzikana yepasi kuramba.Panguva imwecheteyo, nekuda kwekuvigwa kwakadzika, danho remagetsi rinogonawo kuva
yakaderedzwa zvakanyanya, iyo inobatsira zvikuru kuchengetedzwa kwekuchengetedzwa kwemunhu.Iyi nzira yakanakira mukuvaka, yakaderera mumutengo uye
zvinoshamisa mukuita, izvo zvichafarirwa uye kushandiswa.
Nguva yekutumira: Nov-05-2022