Boring DTH da Manyan Diamita

Down-the-hole (DTH) drilling don diamita mai girma wani aikin horarwa ne na musamman da aikin horarwa a cikin gini na zurfi don ƙirƙirar boreholes na diamita mai girma a cikin yanayin ƙasa mai ƙalubale. Wannan aikin horarwa ya amfani da percussion-driven hammering mechanisms wanda ke aiki a ƙarƙashin drill bit, wanda ke ba da ƙarfin ƙarfafawa na ƙarfi zuwa ƙarƙashin borehole maimakon aikin juyin juya hula kawai. Manhaja ta fi dacewa don aikin horarwa na diamita mai girma inda ake amfani da hanyoyin horarwa na al'ada na rotary drilling ya kamu da ƙarfin ƙarfafawa na ɓangaren hagu, ƙarfin ƙarfafawa, ko ƙarfin ƙarfafawa. DTH drilling systems suna aiki a cikin ƙasa mai ƙarfi, dense clay layers, mixed geology, da heterogeneous soil profiles wanda ake amfani da shi a cikin aikin gini. Downhole hammer ya canza iska mai ƙarfi zuwa juyin juyan juyin juya hula, wanda ke lalata ƙasa da ƙasa yayin da drill string ke cire cuttings ta hanyar tsarin cuttings circulation. Wannan haɗin gwiwa na percussion da juyin juya hula ya sa aikin ya ci gaba da aikin horarwa a cikin yanayin ƙasa mai ƙarfi da ƙarfi.