Hluav Taws Xob Lub Zog Tomography Nws yog dab tsi?

- Apr 20, 2020-

Hluav Taws Xob Lub Zog Tomography (ERT) yog cov txheej txheem qib siab ntawm geophysics siv los txiav txim siab tus ntu tiv thaiv kev faib tawm los ntawm kev ntsuas ntsuas rau hauv av. Cov ntaub ntawv ERT yog ceev nrawm nrog qhov ntau ntawm cov ntsuas hluav taws xob ntau tiv thaiv kab hluav taws xob. Cov ntaub ntawv ERT muaj cov qauv ntu sib tshooj (2-D) ntawm kev tiv (·) m) thiab qhov tob. Kev txhais cov ntsiab lus ERT, txhawb los ntawm cov ntaub ntawv laj kab los yog lwm cov ntaub ntawv geophysical, qhia qhov tseeb ntawm cov duab geometry thiab lithology thiab / lossis hydrology thiab / lossis petrology ntawm subsurface geologic formations.


Hluav Taws Xob Lub Zog Tomography ntsuas kev tiv taus. Resistivity, ntsuas hauv Ω · m, yog kev ua lej ntawm kev coj ua. Nws yog cov cuab yeej ntawm lub cev ntau ntawm cov ntaub ntawv uas qhia txog nws nyuaj npaum li cas dhau los ua ib qho hluav taws xob hluav taws xob dhau los ntawm cov khoom siv. Ntsuas ntsuas kev ntsuas tus kheej tuaj yeem ua nrog hloov tam sim no (AC) lossis hloov ncaj qha tam sim no (DC). Raws li kev ntsuas kev tawm tsam yog qhov muaj peev xwm dhau los, yuav tsum tau saib xyuas thaum sib piv cov khoom tiv thaiv kev tiv thaiv uas siv ntau hom kev sib tw.


Cov ntaub ntawv av nplaum, cov hlau oxide, thiab sulphide cov zaub mov tsuas yog cov khoom siv txo qis uas tuaj yeem nqa cov hluav taws xob tseem ceeb los ntawm cov khoom siv nws tus kheej. Xws li, qhov tsis kam lees ntawm feem ntau nyob ze rau thaj chaw sedimentary cov khoom feem ntau tswj tau los ntawm qhov ntau thiab cov chemistry ntawm pore kua hauv cov khoom. Ib qho khoom siv twg tuaj yeem muaj qhov ntau ntawm cov lus teb tsis kam uas yog nyob ntawm theem ntawm kev noo, qhov tob ntawm ions, muaj cov kua dej ntawm cov organic (xws li cov kua tsis muaj kua theem, NAPLs), txhaum, sib koom tes, huab cua, thiab lwm yam.


Cov thawj xibfwb dav dav uas ERT tau ua raws li tau siv los ntawm geophysicists rau yuav luag ib puas xyoo. Kev hloov kho tsis ntev los no rau cov cuab yeej siv thiab cov txheej txheem soj ntsuam cov ntaub ntawv tau ua tiav nrawm heev 2 D cov kev tshuaj ntsuam niaj zaus thiab 3 D cov kev soj ntsuam muaj peev xwm ua tau. Cov qauv qub-tiv thaiv 1 D kev soj ntsuam kev tiv thaiv yog tseem muaj thiab muaj txiaj ntsig zoo rau ntau lub sijhawm, tab sis ntsib teeb meem txhais lus hauv thaj chaw ntawm cov nyom 2 D lossis 3 D geology.

electrical resistivity tomography