Puna kōhao Core mō ngā tūhuratanga geotechnical

Coring huaina kōhao, te drill i tīwae (matua) toka tonu no te mea puta ai toka whakangaromanga anake i runga i te whakakai mata. hanga hangarau taputapu kōhao kei ake o paraire, coring ngongo, whāurutau ngongo, rakau drill, drill aratohu ngongo, me te repe. whakaarohia kōhao Core i roto i 1862 Swiss J. Lesho.

painga Core o te tikanga, ko te e taea te tāne reira tata katoa kamaka coring. Mai i te matua e hoatu te whai wāhi ki te whiwhi i te mōhiohio tika tino pā ana ki te wāhanga arowhenua. whakamahia kōhao matua i roto i te hinu, me te hau keri i roto i te arowhenua rūri me te whakamahere mahi. Ko mahuinga ia mo te reira tūhura o putunga kohuke, me te maha whakamahia hoki puna wai, i roto i ngā akoranga geochemical me rangahau engineering arowhenua.

whakarōpūtia ngā tenei momo o te kōhao, i runga i te tawhiti i te raro rānei wawahanga matūriki o toka taua tikanga kōhao: maroke, tahia ki te hau kōpeke, te whakamahi i te wai horoi (te wai paru ranei).

Kei te whakamahia kōhao Core mō te taraiwa o te uku maroke me ruhlyakovyh toka mātotoru. Ki te maia ROP moka reciprocating kōhao maroke ka waiho reira whai hua tino, engari hauā te matua tīwae te tino, hua i roto i ngā mōhiohio fakakehei me Kāore i roto i te take o puna engineering te tāne. A, no te taraiwa i runga i toka argillaceous takahi ratou hanganga tūturu me haumākū tika ki te whakawera i te matua me te deformation (koiri, totoro ranei). maroke kōhao i runga i toka huarere whakarato hoki ngā mōhiohio tinihanga i runga i te tohu o te HUARERE o toka, he hoki hapa nui taea (i roto i te 0.5 m) i roto i te tatararaa o rohe kahu, na nga papa takitahi o te kamaka ki te putanga o 0,25 atu ranei (ki runga, ki te 0.5 m ) ka taea te mahue (kore tuhia) i tuhi e Kāore hoki i roto i ngā tūhuratanga geotechnical.

whakamahia kōhao Core te ki e pokekore ai hau, ka peia toka huarere,, onepu me te uku pūmau me te permafrost. Kouma ki te whakamahi ki te Makere wai i roto i te kohatu pakeke me i roto i nga kamaka poluskalnyh pūmau. Tenei tikanga whakarato he mōhiohio geotechnical kounga pai.

huarere kōhao matua kawea toka i roto i te tikanga ki te tiaki pai i te matua i roto i putorino tīwae rua tono projectiles ejector coring ranei. Momo ngawari (ki runga, ki te Kāwai III) te totoka (V -VIII) karauna carbide tāne, pakeke reo (kāwai IV -V) me. Hoki toka mārō (IX - XII), me te wāhanga whakamahia taimana mārō te me te karauna pere. A, no te he nui te kōhao matua ki mau i te aratau kōhao - razruschayuschy axial kawenga i runga i te taputapu, ki te tere tītere (rev / min) me i roto i te tukanga tuku hoki te Makere rōrahi (l / min) kai wai.