Core imishini imithombo uphenyo be-Geotechnical

Coring ngokuthi imishini, lapho sokuprakthiza out ikholomu (core) idwala yayinjalo ngoba idwala ekubhujisweni kwenzeka kuphela ebusweni indandatho. Kwetheknoloji imishini ithuluzi yakhiwa izingcezu, coring tube, tube adapters, sokuprakthiza izinduku, sokuprakthiza Umhlahlandlela tube futhi indlala. imishini Core ezihlongozwayo ngo-1862 Swiss J. Lesho.

inzuzo Core indlela ukuthi kungenziwa yamba cishe zonke rock coring. Kusukela core banikezwa ithuba ukuthola ulwazi olunembile kakhulu mayelana nesigaba umonakalo omkhulu kakhulu. imishini Core isetshenziswa uwoyela negesi imishini e Geological wezokwakha kanye nokuhlela nemisebenzi. Kuyinto esisemqoka the ukuhlola imali amaminerali, futhi ngokuvamile sisetshenziswa for amanzi emithonjeni, ezifundweni geochemical nezinhlolovo ubunjiniyela umonakalo omkhulu kakhulu.

Lolu hlobo imishini libhekwa, kuye ngokuthi ibanga kusuka phansi niphihlizwe izinhlayiya yamadwala izindlela ezifana imishini: ezomile, ingashiswa nge umoya onomfutho, usebenzisa uketshezi egeza (emanzini noma odakeni).

imishini Core isetshenziselwa ukushayela ngobumba elomile ruhlyakovyh rocks obukhulu. Nge eyingqabavu reciprocating imishini kancane ROP ome kuyoba ephumelela kunazo, kodwa umongo ikholomu zikhubazekile kakhulu, okuholela ukwaziswa okusontekile, akuvumelekile nje endabeni imithombo ubunjiniyela kokuba yamba. Lapho ushayela phezu kwamadwala argillaceous i- isakhiwo zabo zemvelo kanye nomswakama ngenxa Ukushisa umnyombo futhi ukusonteka (curling, noma esisuka). Drilling ezomile emadwaleni badlula futhi ahlinzeke ngolwazi olungeyilo mayelana degree of weathering yamadwala, iphutha elikhulu zingenza (ngaphakathi 0.5 m) ekuchazweni ungqimba imingcele, ngakho izingqimba ngazinye idwala ngokukhiphayo ka 0.25 noma ngaphezulu (kufika ku 0.5 m ) engashiywa (akubhalwa) e nokubhala ukuthi futhi akwamukelekile nophenyo be-Geotechnical.

imishini Core isetshenziswa lizahlambulula emoyeni uma ushayela idwala badlula, isihlabathi nobumba ozinzile futhi eyiqhwa. Rational ukusebenzisa nge siwasebenzise amanzi ku-rock kanzima futhi uzinze poluskalnyh amatshe. Le ndlela inikeza izinga ezinhle Imininingwane be-Geotechnical.

imishini Core badlula amatshe ukuze engcono ukulondoloza core Kwenziwa ikholomu double amapayipi isicelo noma ejector coring projectiles. Lesitshalo omnene (kufika ku Isigaba III), ubulukhuni naphakathi (isigaba IV -V) kanye okuqinile (V -VIII) yamba Carbide imiqhele. Ukuze rock kanzima (IX - XII) futhi kancane idayimane okuqinile isetshenziswa kanye shot umqhele. Lapho imishini core kubalulekile ukugcina Imodi imishini - razruschayuschy Axial umthwalo ithuluzi, isivinini projectile (rev / iminithi) futhi inqubo ukuvumela siwabeka ukuze siwasebenzise ivolumu (l / iminithi) okuphakelayo ketshezi.