Imithombo kuzawuqheliswa Core ukuba uphando lobume

Coring ebizwa ukubhola, apho drill ngaphandle kwikholam (core) rock kakuhle kuba intshabalalo rock kwenzeka kuphela ebusweni lesangqa. isixhobo sokugrumba kwezobugcisa wenziwe ziikhowudi, coring ityhubhu, amaqhoshana ityhubhu, drill iintonga, drill isikhokelo ityhubhu kunye ndlala. ukubhola Core ecetywayo ngo1862 Swiss J. Lesho.

inzuzo engundoqo ye indlela yokwenza yi ukuba azakwembiwa phantse yonke rock coring. Ukususela undoqo banikwa ithuba lokufumana ingcaciso echanekileyo malunga icandelo zejoloji. ukubhola Core isetyenziswa oyile negesi yokomba in zejoloji ukuhlola kunye nemephu imisebenzi. Kuyinto buyafuneka ukuba wokuhlola of zezimbiwa, kwaye isoloko isetyenziswa kuzo imithombo yamanzi, kwizifundo geochemical kunye nophando zobunjineli neznye.

Olu hlobo zokomba zihlelwe, kuxhomekeke kumgama ukusuka ezantsi zuka amasuntswana zeengxondorha ezinjalo iindlela yokomba: owomileyo, ihlanjululwe kunye ngomoya, usebenzisa engamanzi yokuhlamba (amanzi okanye udaka).

ukubhola Core isetyenziselwa lokuqhuba beziludongwe owomileyo ruhlyakovyh nasemaweni ashinyeneyo. Ekubeni unamandla Buyisela yokomba bit ROP koma kuya kuba kakhulu, kodwa undoqo Ikholamu gqitha kakhulu, nto leyo ingcaciso egqwethekileyo nezingamkelekanga kwimeko amaqula zobunjineli ukuba kugrunjwa. Xa uqhuba ematyeni argillaceous imithetho ubume babo zendalo ukufuma ngenxa zokufudumeza umongo kunye deformation (ukugoba, okanye kukunaba). Ukubhola eyomileyo ematyeni badlula kwakhona ukunika ulwazi olulahlekisayo kwi iqondo yemozulu yamatye, impazamo enkulu kwakhona kuyenzeka (ngaphakathi 0.5 m) kwinkcazelo imida maleko, ngoko ke umaleko ngabanye iliwa kunye nemveliso 0.25 okanye ngaphezulu (ukuya ku-0.5 m ) olunokutyeshelwa (hayi ezenzekileyo) nokubhalisa ukuba nayo nezingamkelekanga uphando lobume.

ukubhola Core isetyenziselwa ukusihlambulula umoya xa uqhuba engxondorheni kwenye imo, isanti kunye nodongwe oluzinzileyo permafrost. Kwande ukusebenzisa ne ukuhlisa amanzi eweni nzima yaye ematyeni poluskalnyh oluzinzileyo. Le ndlela inika umgangatho ulwazi Geotechnical.

ukubhola Core badlula iliwa ukuze alondoloze inkqubo- olungundoqo yenziwa imibhobho ikholam kabini isicelo okanye projectiles ejector coring. Iintlobo ezingephi (ukuya Udidi III), yokuqaqadeka eliphakathi (udidi IV -V) kunye okuqinileyo (V -VIII) eweva ngezithsaba khabhayithi. Ngokuba ingxondorha nzima (IX - XII) yaye inxalenye diamond eziqinileyo esetyenziswa kunye isithsaba shot. Xa kunokwembiwa ongundoqo kubalulekile ukugcina imo yokomba - umthwalo yezihlunu razruschayuschy phezu kwencochoyi yesixhobo, isantya projectile (Rev / min) kunye nenkqubo ukuvumela ukuhlisa umthamo (l / min) feed engamanzi.