Amabhakede E-Diamond

Amabhokisi e-Diamond Core ayizinsiza zokubhoboza ezikhethekile eziklanyelwe ukuhamba ngemithombo ye-rock enezinga eliphezulu ngesikhathi sokufaka izisekelo ezijulile. Lawa mabhokisi anekhanda lokugaya elisetshenziswa idayimani elichoboza ingezansi e-rock ehlanganisiwe ndawonye nokuthola izibonelo ze-core ezihlobene ne-cylindrical. Njengesisombululo esinembile nesisebenzayo sokudala imithombo ye-rock kumaphayili aphinzelekile, izingxenye ze-diaphragm wall, kanye ne-caissons, amabhokisi e-diamond core avumela onjiniyela bezixhumanisi ze-geotechnical ukuba basungule amandla okuvikela atosheleyo emhlabeni ophakeme ngenkathi beqoqoda izibonelo ezibalulekile zokuthola iqiniso lemigodi yesisekelo. Amabhokisi e-diamond core asetshenziswa emisebenzini yokubhoboza izisekelo ezijulile edinga ukuhamba nge-soil overburden ibe iye ku-rock formations enezinga eliphezulu. Abalulekile ezinqubweni zokugaya i-rock zokuphinyiselwa kumaphayili aphinzelekile (izikhonkwane ezibhoboziwe), ukufakwa kwe-diaphragm wall lapho kunezimo ezibamba i-rock, kanye nokwakha amaphayili e-secant phakathi kwe-rock strata. Amabhokisi aguqula izibonelo ze-core ezidingekayo ukuze kuqinisekiswe ikhwalithi, njengoba izibonelo ezikhiphayo ziqinisekisa ngqo ikhwalithi ye-rock, izinga lokugqwala, izimo zokuphuka, kanye nemingcele yamandla okuvikela abalulekile ukuze kuqinisekiswe ikhwalithi yokwakhiwa kwesisekelo. Principle yokusebenza ihlanganisa ukujikeleza kweholo le-core barrel ngaphansi kwengcindezi ye-hydraulic ngokumelene nendawo ye-rock. Ikhanda lokugaya elisha le-dayimani—elakhiwe ngedayimani yezimboni efakwe kwi-metal matrix ebunyiwe—lokhu kwenziwa ngokuthambekela kwi-rock njengoba le bhokisi iqhubeka ngaphansi kwengcindezi kanye ne-torque. Ukugaya kwe-drill kususwa ngokuqhubekayo ngensizakalo ye-fluid yokuphosa noma umoya ophephuliwe, kuyilapho ibhokisi le-hollow ligcina i-rock core ingashintshiwe. Izinga lokungena lihluka kakhulu ngokwemigomo ye-rock eyinhloso eyalinganiswa ngokuqondile ku-compressive strength engasindanga, ukugxila kodayimani kwi-matrix yokugaya, kanye nemingcele yesikhumbuzo esisetshenziswa kusuka ku-drilling rig. Amabhokisi e-diamond core akhiqizwa ngezinhlaka ezahlukene ezihlukene ngosayizi wesikhala (ngokuvamile 76–152 mm), izinga lokugxila kodayimani (okujwayelekile kuya kokuphakeme), kanye nezindinganiso zokuxhuma (flush joint, thread yangaphandle, noma izincazelo ze-API). Amabhokisi e-single-tube anikeza ukujula okunganenzelwa ngokuphindwe kabili kwi-rock enezinga eliphezulu, kuyilapho amabhokisi e-double-tube ahlukanisa i-core nge-tube yangaphakathi ejikeleza ngokuhamba ukuze kuvinjelwe ukulahleka ezikhathini eziphukile noma eziphukile kakhulu. Izinhlobo ze-polycrystalline diamond compact (PDC) zinikeza izinga elithuthukile lokungena kwezinye izigaba ze-rock. Ukukhetha kudinga ukuhlola i-compressive strength engasindanga kanye ne-mineralogy yeziqu, izinga lokuphuka, ikhwalithi ye-core edingekayo yokuhlolwa kwelebhu, ukutholakala kwe-drilling rig thrust kanye ne-torque, kanye nezimali zomsebenzi. Iziqinisekiso zemboni ezifaka phakathi i-ASTM D2113 (ukubhoboza kwe-diamond core ukuze kuphenywe indawo), i-ASTM D6300 (ukuhlola abaphakeli bokubhoboza), kanye ne-ISO 14689 (ukuhlukaniswa kwedwala ne-soil) zinikeza izincazelo zezinsiza, izinqubo zokubhoboza, kanye neziqinisekiso ze-core ezibalulekile ukuze kutholakale ikhwalithi ephezulu ezisekelweni ezijulile.