Tam sim no, loj - txoj kab uas hla pneumatic pob zeb laum nrog ib txoj kab uas hla ntawm 75-100mm los yog loj dua diameters yog siv nyob rau hauv marble mines rau laum los ntawm lub qhov rau hlau ropes. Nrog rau daim ntawv thov ntawm cov hlau pom tshuab hauv granite mining, nws tseem yuav tsum tau xyaum lub qhov loj los ntawm - qhov, thiab tawv granite tsis tuaj yeem siv cov hydraulic laum zoo tib yam, yog li nws yuav tsum tau siv rau qhov loj pneumatic laum siv. nyob rau hauv granite mining Loj - txoj kab uas hla pneumatic pob zeb xyaum nrog ib tug drilling txoj kab uas hla ntawm 90-104 hli yog siv nyob rau hauv granite mines. Vim hais tias txoj kab uas hla ntawm lub borehole nce, lub pob zeb drilling powerhead ntawm lub loj - aperture pneumatic pob zeb xyaum siv lub down- lub - qhov pneumatic impactor. Lub tshuab pub pub siv tau txais cov saw hlau{10}} hom pub tshuab uas tau tsav los ntawm lub tshuab cua, thiab lwm lub tshuab cua tshwj xeeb yog siv rau kev tsav tsheb ntawm cov laum yeeb nkab kom ntseeg tau tias muaj zog txaus pub propulsion quab yuam thiab txhim khu kev qha rotary txav ntawm lub laum me ntsis. Yog li ntawd, huab cua noj ntawm tag nrho cov -pneumatic loj- txoj kab uas hla pob zeb xyaum yog nyob nruab nrab ntawm 7-12 cubic meters ib feeb, thiab mines yuav tsum tau nruab nrog cua compressors uas muaj peev xwm txaus. Lub chaw tswj ntawm lub pob zeb xyaum siv cov qauv sib cais, thiab lub pob zeb xyaum yog nruab nrog cov khoom siv plua plav. Qhov loj-aperture pneumatic pob zeb xyaum siv tam sim no hauv marble thiab granite mines yog tsim los ua ntau yam qauv uas tuaj yeem ua haujlwm ntsug, kab rov tav, thiab txhua lub kaum sab xis drilling. Qhov kev txiav txim ntawm kev sib tshuam lub qhov drilling yog cuam tshuam nrog cov naj npawb ntawm qhov sib tshuam, qhov tob tob, thiab lwm yam. Feem ntau, lub qhov kab rov tav yog drilled ua ntej, thiab lub qhov ntsug yog drilled tom qab. Qhov no yog vim qhov drilling ceev ntawm lub qhov kab rov tav yog qeeb, qhov chaw yog qhov nyuaj, thiab lub qhov ntsug yog qhov yooj yim rau kev xyaum. Yog tias lub qhov tsis sib tshuam, tus nqi thiab qhov nyuaj ntawm kev rov ua dua qhov ntsug yog qhov tsawg. Los yog raws li qhov kev txiav txim ntawm drilling qhov tob ua ntej, ces drilling DTH, qhov no kuj yog vim hais tias yog xav tau drilling, tus nqi thiab qhov nyuaj ntawm drilling DTH yog tsawg thiab tsawg. Yog hais tias peb lub qhov yog drilled rau kev sib tshuam, tsis hais seb lub xeem seem ntsug lub qhov los yog kab rov tav lub qhov, qhov ntiav ntiav yuav tsum tau xaiv raws li lub feem ntau drilled qhov, uas yog tseem xam tau tias yuav txo tus nqi ntawm lub qhov kho thiab qhov nyuaj ntawm kho lub qhov.
