DTH raujthiab chisels tau raug siv los ntawm tib neeg txij li Hnub Nyoog Pob Zeb los tsoo pob zeb. Nplooj ntawv no qhia txog cov ntsiab lus keeb kwm thiab kev tsim kho tshiab uas tau siv los koom nrog hydraulicPob zeb Drilling cuab yeej.
Muaj ob lub tswv yim uas ua ke: Thaum lub sij hawm Industrial Revolution, moj tej tawg qhov drilling yog siv nyob rau hauv mining thiab tunneling raws li zoo raws li tob drilling rau dej, roj, thiab roj qhov dej.
Pneumatic Pob Zeb Drills nyob rau hauv19th ibxyoo pua
Ua ntej qhov kev tsim ntawm thawj lub zog pob zeb xyaum ua haujlwm hauv xyoo 1850, feem ntau kev khawb tau ua los ntawm tes. Lawv tau tsim los xyaum qhov blast qhov. Qee cov khoom siv tshiab, xws li cov tshuab cua compressors thiab cua-tsav percussion xyaum, tau ua haujlwm thawj zaug thaum lub sij hawm tsim kho ntawm Hoosac qhov.
DTH rauj laum los ntawm Ingersoll nyob rau hauv 1871 feem ntau hais tias yog ib qho tseem ceeb hauv percussion drilling. Ib tug chisel yog nrawm rau hauv lub qhov thiab tig tau. Cov cuab yeej me me txaus thauj los ntawm cov neeg ua haujlwm thiab muaj cov khoom noj tsis siv neeg.
Lub invention ntawm lub valveless DTH rauj laum hnub rov qab mus rau 1872 thaum CJ Ball tau thov ib tug patent uas ua hauj lwm ib tug piston raws li ib tug valve: Lub piston yuav qhib txoj kev txuas nws qhov chaw mus rau lub tso pa thiab cov kua dej thaum nws mus txog ib tug tshwj xeeb point. Los ntawm kev ua qhov no, lub siab yuav raug siv rau ntawm ib sab thaum raug tso tawm ntawm lwm qhov. Qhov no yuav kaw cov channel thiab ua rau cov kua dej nthuav dav, ua kom lub piston nrawm dua kom txog thaum nws mus txog rau sab nraud thiab thim rov qab cov kev ntxhov siab. Lub tswv yim no tseem siv nyob rau hauv pneumatic Down-The-Hole (DTH) Rauj xyaum tab sis tsis tuaj yeem siv rau hydraulic DTH rauj xyaum, vim qhov nthuav dav yog ib feem ntawm lub tshuab thiab tsis muaj rau hydraulics.
Drilling nyob rau hauv 19thxyoo pua
Txawm hais tias mus txog thaum pib ntawm lub xyoo pua 20th, qhov zoo drilling hauv cov pob zeb tawv tau ua tiav los ntawm cov cuab yeej siv hluav taws xob percussion drilling: Ib lub chisel mounted ntawm ib lub cable yog poob rau hauv lub qhov borehole thiab rub rov qab. Txoj kev no tau paub ntau txhiab xyoo thiab tseem siv hauv cov tebchaws tsim.
Rau drilling pob zeb mos, fishtail drag bits tau siv nyob rau hauv rotary drilling.
Muaj qee qhov kev tsim kho nyob rau thaum xaus ntawm lub xyoo pua 18th uas tau npaj ib qho kev tsav tsheb thaum kawg ntawm kev xyaum tsav los ntawm cov dej drilling, zoo li lub tshuab turbine rau pob zeb diamond laum khoom los ntawm 1873 los ntawm Christopher G. Cross.
