Cov txheej txheem:
Video: Dab tsi yog sinkhole thiab nws tsim li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Raws li cov limestone dissolves, pores thiab kab nrib pleb yog loj thiab nqa cov dej acidic ntau dua. Sinkholes yog tsim thaum cov av saum npoo av ntog los yog tog rau hauv cov kab noj hniav los yog thaum cov khoom nto yog nqa mus rau hauv cov voids.
Ib yam li ntawd, nws raug nug, dab tsi yog qhov dab dej thiab dab tsi ua rau nws?
Ib tug natural sinkhole Feem ntau tshwm sim thaum acidic rainwater nkag mus rau hauv cov av saum npoo av thiab sediment kom txog rau thaum nws mus txog rau hauv ib tug soluble bedrock xws li ntsev, limestone los yog sandstone. Cov txheej txheem no tuaj yeem siv sijhawm ntau pua xyoo raws li cov dej dissolves cov pob zeb thiab tsim cov kab noj hniav hauv qab.
Tsis tas li ntawd, cov sinkholes puas txaus ntshai? Kev tawg sinkholes tshwm sim maj mam thiab feem ntau tsis yog txaus ntshai , tab sis ib qho uas dhau los ua lub pas dej tuaj yeem ntws sai sai yog tias dej ua rau nws los ntawm kev tiv thaiv hauv qab txheej. Qhov thib ob hom sinkhole yog cover-subsidence sinkhole . Cov no sinkholes tshwm sim nyob rau hauv cov cheeb tsam uas cov xuab zeb npog lub bedrock.
Yog li ntawd, sinkholes tshwm sim qhov twg?
Raws li USGS, kwv yees li 20 feem pua ntawm cov av hauv Teb Chaws Asmeskas muaj kev cuam tshuam rau cov dab dej. Qhov kev puas tsuaj feem ntau los ntawm sinkholes nyhav tshwm sim hauv Florida , Texas, Alabama, Missouri, Kentucky, Tennessee, thiab Pennsylvania. Daim ntawv qhia hauv qab no qhia txog thaj chaw uas cov kab noj hniav hauv av tuaj yeem tsim tau thiab kev puas tsuaj hauv av tuaj yeem tshwm sim.
Dab tsi yog cov cim ceeb toom ntawm lub dab dej?
Nov yog cov cim qhia saib rau qhov uas yuav qhia tau tias muaj teeb meem:
- Ntoo lossis laj kab ncej uas qaij lossis poob.
- Foundations uas slant.
- Cov pas dej me me tshiab uas tshwm sim tom qab los nag.
- Kev tawg hauv av.
- Sudden ntws ntawm lub pas dej.
- Kev nrawm nrawm ntawm lub qhov hauv av.
- Dips, kev nyuaj siab, nqes hav uas tshwm nyob rau hauv ib lub vaj.
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