Hauv peb txoj haujlwm tshawb nrhiav geophysical, ib qho ntawm feem ntau thiab nyuaj geological teeb meem peb ntsib yog gypsum mine goafs. Cov voids hauv av no feem ntau muab zais rau hauv qab ntawm qhov chaw thiab tsis tuaj yeem pom ncaj qha, tab sis lawv yuav maj mam hloov mus rau qhov phom sij loj xws li av tawg, tawg nto, thiab kev ua haujlwm tsis tiav.
Peb tau pom tias gypsum goafs tshwj xeeb tshaj yog tsis ruaj khov vim lawv cov solubility siab thiab tsis muaj zog ntawm kev ncaj ncees. Thaum cov dej hauv av nkag mus rau cov voids no, cov txheej txheem kev tshem tawm yuav txuas ntxiv mus ntxiv, ua rau cov kab noj hniav hauv av nthuav dav zoo li qhov tsis pom kev loj hlob.
Vim tias qhov kev zais tsis zoo no, cov txheej txheem kev tshawb nrhiav saum npoo ib txwm muaj feem ntau tsis txaus. Qhov no yog vim li cas peb thiaj li tso siab rau cov thev naus laus zis tshawb nrhiav geophysical kom pom cov xwm txheej subsurface- ua kom cov av hauv av ua tau zoo piv rau "CT scan ntawm lub ntiaj teb," tso cai rau cov kev pheej hmoo zais zais ua ntej.
Vim li cas Gypsum Goafs nyuaj rau kev kuaj xyuas hauv Engineering Projects
Hauv kev tshawb nrhiav engineering, peb feem ntau pom tias gypsum goafs nyuaj rau txheeb xyuas vim tias lawv "tsim" hauv av. Qhov saum npoo yuav nyob ruaj khov rau lub sijhawm ntev yam tsis muaj qhov pom tseeb deformation, thaum lub hauv av void geometry yog qhov tsis sib xws thiab nyuaj. Qee qhov xwm txheej, cov voids kuj tuaj yeem ua rau ib nrab ntim nrog dej lossis cov ntaub ntawv sib tsoo, ua rau cov lus teb rau lub cev nyuaj ntxiv.
Vim yog cov xwm txheej no, kev cia siab tsuas yog kev txiav txim siab los yog kev txiav txim siab feem ntau tsis txaus los nkag siab txog qhov xwm txheej hauv av tag nrho. Peb nyiam siv txoj hauv kev geophysical los maj mam "qhia" cov kev hloov pauv hauv subsurface- ua ntej txheeb xyuas thaj chaw tsis txaus ntseeg nyob rau thaj tsam dav, thiab tom qab ntawd kho qhov kev txhais lus nrog ntau dua - txoj kev daws teeb meem. Txoj hauv kev no tsis yog tsuas yog siv tau zoo xwb tab sis kuj ze dua rau cov xwm txheej geological tiag tiag.
Siab -Density Electrical Resistivity Method: Peb Lub Tuam Txhab Tseem Ceeb rau Kev Tshawb Fawb Txog Kev Tshawb Fawb
Hauv kev tshawb nrhiav gypsum goaf, qhov siab -qhov ceev hluav taws xob tiv thaiv txoj kev yog ib qho ntawm peb feem ntau siv cov txheej txheem geophysical. Nws ua haujlwm los ntawm kev txhaj tshuaj hluav taws xob tam sim no rau hauv av thiab ntsuas qhov sib txawv ntawm qhov sib txawv ntawm cov electrode sib txawv, tso cai rau peb los txiav txim siab cov qauv geological subsurface.
Huab cua- puv voids feem ntau tshwm sim raws li siab -resistivity anomalies, thaum dej- puv goafs, fractured zones, los yog saturated kab noj hniav yuav qhia tau tias tsawg-resistivity teb. Qhov kev sib piv ntawm lub cev ntshiab no ua rau txoj hauv kev ua tau zoo rau thaum ntxov - kev tshawb pom qhov tsis txaus ntseeg thiab kev txheeb xyuas hauv cheeb tsam.
Vim nws qhov yooj yim hauv kev xa tawm, cov ntaub ntawv siab ceev, thiab kev ua haujlwm siab, peb feem ntau siv nws ua thawj kauj ruam hauv kev tshawb nrhiav goaf los txhais cov phiaj xwm rau kev tshawb nrhiav ntxiv.
Microtremor Survey: Imaging Subsurface Structures using Natural Vibrations
Kev soj ntsuam microtremor yog ib txoj hauv kev uas peb nquag siv hauv nroog thiab thaj chaw nyuaj. Nws tsis xav tau cov khoom siv seismic. Hloov chaw, nws sau ambient av vibrations thiab rho tawm Rayleigh yoj dispersion yam ntxwv rau invert shear-wave velocity structures.
Hauv thaj chaw cuam tshuam los ntawm goafs lossis pob zeb pob zeb tawg, peb feem ntau pom qhov sib txawv qis- nrawm nrawm, uas cuam tshuam zoo rau kev txo qis pob zeb loj.
Txoj kev no yog qhov tshwj xeeb tshaj yog rau qhov ntiav mus rau nruab nrab - kev tshawb nrhiav qhov tob thiab tuaj yeem ua tau yam tsis muaj kev cuam tshuam cov dej num ib txwm muaj, ua rau nws siv dav hauv kev tshawb fawb hauv nroog engineering thiab infrastructure.
Transient Electromagnetic Method (TEM): Cov Txheej Txheem Tseem Ceeb rau Cov Dej Sib Nqus -Ntev Goaf Detection
Txoj kev hloov hluav taws xob hloov pauv (TEM) yog ib qho tseem ceeb tshaj plaws uas peb siv rau kev tshawb nrhiav tob tob. Nws yog raws li electromagnetic induction cov hauv paus ntsiab lus siv los qhia cov qauv hauv av conductivity.
Thaum lub sij hawm ua hauj lwm, ib tug pulsed tam sim no generates ib tug thawj magnetic teb. Tom qab qhov tam sim no raug kaw lawm, induced eddy currents decay nyob rau hauv subsurface conductive lub cev, thiab cov lus teb decay no raug kaw thiab soj ntsuam rau infer underground hluav taws xob zog.
Hauv thaj chaw gypsum mining, dej- puv goafs thiab cov dej puas ntsoog-cov kab mob feem ntau pom muaj zog conductive (tsawg-resistivity) anomalies. TEM muaj txiaj ntsig tshwj xeeb rau kev tshawb nrhiav qhov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob.
3C Seismograph: Siab -Kev daws teeb meem ntawm Subsurface Structures
Thaum siab - qhov kev daws teeb meem subsurface imaging yog xav tau, peb siv 3C seismic systems nruab nrog peb - cov khoom geophones. Cov sensors no sau seismic nthwv dej nyob rau hauv ntau cov lus qhia, muab cov ntaub ntawv ua tiav wavefield ntau dua piv rau cov txheej txheem ib txwm muaj - cov khoom siv.
Hauv kev kuaj pom goaf, cov voids hauv av thiab cov cheeb tsam tawg feem ntau ua rau txo qis seismic, kev cuam tshuam kev cuam tshuam, thiab wavefield anomalies. Los ntawm kev txheeb xyuas cov lus teb no, peb tuaj yeem txhais qhov chaw, geometry, thiab ciam teb ntawm cov kab noj hniav hauv av nrog qhov tseeb dua.
Piv nrog rau cov txheej txheem seismic cov qauv, 3C seismic cov ntaub ntawv muab cov ntaub ntawv nplua nuj thiab ua lub luag haujlwm tseem ceeb hauv kev txhais cov ntsiab lus geological hauv cov xwm txheej nyuaj.
Kev txhais Geophysical Integrated: Peb Ntau -Txoj Kev Tshawb Fawb Txog Kev Tshawb Fawb
Hauv cov phiaj xwm tswv yim, peb tsis tshua vam khom ib txoj hauv kev geophysical. Peb txais yuav ib lub tswv yim kev txhais lus ua ke los txhim kho kev ntseeg tau thiab raug.
We first use high-density resistivity surveys to identify anomalous zones quickly, then apply microtremor methods to refine structural boundaries. TEM yog siv los ntsuas cov dej tob-cov kab mob, thaum 3C seismic cov ntaub ntawv muab siab - daws teeb meem cov qauv duab rau qhov kawg validation.
Qhov ntau- txoj kev sib xyaw ua ke no tau ua pov thawj hauv peb cov haujlwm engineering los txhim kho qhov raug thiab ruaj khov ntawm kev kuaj pom goaf tau zoo heev.
Peb Cov Khoom Siv Tshawb Nrhiav Geophysical Solutions
Peb tshwj xeeb hauv kev tshawb fawb, kev tsim kho, thiab kev tsim cov cuab yeej tshawb nrhiav geophysical, thiab peb tsis tu ncua muab cov cuab yeej tshaj lij thiab kev daws teeb meem rau kev tshawb nrhiav subsurface thoob ntiaj teb.
Peb cov cuab yeej siv dav siv hauv kev tshawb nrhiav gypsum goaf, underground void identification, engineering geological surveys, and underground water exploration.
Peb cov khoom lag luam tseem ceeb suav nrog:
- High-density electrical resistivity systems for fast imaging and anomaly detection from shallow to medium depths
- 3C seismic systems rau siab - daws teeb meem subsurface qauv duab thiab cov ncauj lus kom ntxaws goaf txhais
- Transient electromagnetic (TEM) systems rau kev sib sib zog nqus conductive anomaly detection thiab dej -kev tsom xam cheeb tsam
- Integrated geophysical soj ntsuam cov kev daws teeb meem thiab teb cov ntaub ntawv nrhiav tau systems
Qhov zais cia ntawm gypsum mine goafs ua rau kev tshawb pom ntxov thiab kev ntsuam xyuas qhov tseem ceeb rau kev nyab xeeb engineering. Txoj kev tshawb nrhiav Geophysical muab txoj hauv kev zoo tshaj plaws los pom cov qauv hauv qab thiab txheeb xyuas cov kev pheej hmoo ua ntej lawv tsim muaj kev phom sij loj.
Los ntawm kev sib koom ua ke ntawm kev siv siab -density resistivity, microtremor surveying, transient electromagnetic method, thiab 3C seismic technology, peb muaj peev xwm txheeb xyuas cov kev pheej hmoo hauv av ua ntej, txhais cov qauv subsurface kom meej meej, thiab txhawb kev txiav txim siab engineering zoo dua.
Peb yuav txuas ntxiv txhim kho peb cov cuab yeej tshawb nrhiav geophysical thiab cov kev daws teeb meem, muab cov cuab yeej siv tau zoo thiab txhim khu kev qha rau kev tshawb nrhiav hauv av thoob ntiaj teb.
