Ma Drone a Kafukufuku wa Zachilengedwe
Kukula kwa ukadaulo wa ma drone (UAV) kwasintha momwe mafakitale ambiri amasonkhanitsira deta ya m'munda, kuphatikizapo za geology. Ngakhale kuti kafukufuku wa geology kale ankadalira kwambiri mapu amanja, kuyeza kwa dziko lapansi, ndi kutanthauzira zithunzi za satellite zokhala ndi resolution yochepa kapena chivundikiro cha mitambo, ma drone tsopano akupereka njira ina yachangu, yosinthasintha, komanso yowoneka bwino kwambiri. Pokhala ndi makamera, masensa ambiri, komanso LiDAR, ma drone amatha kuthandiza akatswiri a geology kujambula mapangidwe a miyala, kuzindikira zoopsa zomwe zingachitike pa geology, ndikuthandizira kufufuza zinthu ndi tsatanetsatane womwe kale unali wovuta kupeza popanda ndalama zambiri.
N’chifukwa Chiyani Ma Drones Ndi Ofunika Pakafukufuku wa Zachilengedwe?
Kafukufuku wa za nthaka cholinga chake ndi kumvetsetsa momwe dziko lapansi lilili pamwamba ndi pansi pa nthaka kudzera mu kuyang'ana, kupanga mapu, ndi kusanthula. Madera ambiri a nthaka ndi ovuta kufikako: mapiri otsetsereka, malo otsetsereka omwe amagwa mosavuta, madera ophulika kwambiri, nkhalango zowirira, kapena madera akutali omwe ali ndi mwayi wochepa wolowera. Ma drone ndi yankho chifukwa amatha kuuluka pansi motsatira mizere ya nthaka, kujambula zithunzi kuchokera mbali zotetezeka, ndikuphimba madera akuluakulu nthawi yochepa. Kuphatikiza apo, zotsatira za mapu a drone zitha kusinthidwa kukhala orthophotos, digito elevation models (DEM/DTM), ndi 3D models, zomwe zimathandiza kwambiri njira yotanthauzira za nthaka.
Mitundu ya Drone Yogwiritsidwa Ntchito Kawirikawiri
Mu kafukufuku wa geology, mitundu iwiri ya ma drone imagwiritsidwa ntchito kwambiri: ma multirotor ndi mapiko okhazikika.
1. Ma multirotor (quadcopters, hexacopters) ndi abwino kwambiri poyenda mozungulira komanso kuyendetsa bwino, ndipo ndi oyenera malo opapatiza kapena omwe amafunikira tsatanetsatane wambiri m'malo opapatiza, monga miyala, makoma a migodi, kapena malo olakwika. Vuto lake ndilakuti nthawi zambiri amauluka nthawi yochepa.
2. Ndege zokhala ndi mapiko okhazikika ndi zoyenera kujambula malo akuluakulu monga mitsinje, zitsime za m'madzi, kapena malo ofufuzira miyala. Chifukwa cha mphamvu zawo zoyendera mpweya, ndege zokhala ndi mapiko okhazikika zimatha kukwera mahekitala makumi mpaka mazana ambiri paulendo umodzi. Komabe, zimafuna malo okwanira onyamuka/kutera ndipo sizitha kusinthasintha kuti zikwere.
Kusankha mtundu wa drone kumadalira zolinga za kafukufuku, kukula kwa dera, momwe malo alili, komanso momwe deta imagwiritsidwira ntchito.
Masensa ndi Malipiro Ofunikira pa Zosowa za Mlengalenga
Ubwino waukulu wa ma drone pa geology siwokha m'mapulatifomu awo owuluka, komanso m'masensa omwe amanyamula. Masensa ena omwe amagwiritsidwa ntchito kwambiri ndi awa:
– Kamera ya RGB yowoneka bwino kwambiri: imapanga zithunzi zatsatanetsatane za mapu a geological pamwamba, kuzindikira lithology kutengera kapangidwe/mtundu, mapu osweka, ndi zolemba za momwe zinthu zilili m'munda.
– Multispectral: imagwira ma spectra enaake omwe angathandize kusanthula zomera ngati chizindikiro chosalunjika cha momwe zinthu zilili m'chilengedwe (monga kupsinjika kwa zomera chifukwa cha mpweya, kusintha kwa chinyezi, kapena kapangidwe ka nthaka).
– Kutentha: kothandiza pa kafukufuku wa kutentha kwa dziko, kuyang'anira madera ophulika, kuzindikira madzi ofunda, ndikuwonetsa kusintha kwa kutentha pamwamba.
– LiDAR: ndi yothandiza kwambiri m'malo okhala ndi zomera chifukwa imatha kulowa m'denga ndikupanga zitsanzo zolondola kwambiri za pamwamba pa nthaka. LiDAR imathandiza kupanga mapu a mizere, mawonekedwe a zolakwika, ndi mawonekedwe abwino a geomorphological.
– Masensa a gasi (omwe amagwiritsidwa ntchito pazinthu zina): angagwiritsidwe ntchito poyang'anira zochitika za phiri lamoto kapena mpweya wina woipa, pamene akusamalabe za chitetezo ndi malamulo.
Ndi kuphatikiza koyenera kwa masensa, ma drone amatha kupereka zambiri zowunikira bwino za geology.
Zogulitsa Deta Zopangidwa ndi Drone
Kuchokera ku maulendo a ndege za drone, deta yosaphika mu mawonekedwe a zithunzi kapena mitambo ya point ingakonzedwe pogwiritsa ntchito pulogalamu ya photogrammetry kapena LiDAR processing. Zinthu zodziwika bwino ndi izi:
1. Orthomosaic (Chithunzi cha Orthomosaic)
Mapu a zithunzi omwe akonzedwa kuti awonongeke, zomwe zimathandiza kuti agwiritsidwe ntchito poyesa mtunda ndi malo molondola. Ma Orthophotos ndi othandiza kwambiri pamapu a geology pamwamba, zinthu zomwe zili m'minda, komanso mapu ogawa miyala.
2. Digital Elevation Model (DEM/DTM)
DEM imasonyeza kutalika kwa pamwamba (kuphatikizapo zomera/nyumba), pomwe DTM imayimira bwino pamwamba pa nthaka. Deta iyi ndi yofunika kwambiri pofufuza za geomorphology, ma slope gradients, kayendedwe ka madzi, ndi kuthekera kwa kugunda kwa nthaka.
3. Chitsanzo cha 3D ndi Mtambo wa Point
Ma model a 3D ndi othandiza kwambiri pojambula miyala, makoma a migodi, kapena malo ovuta. Akatswiri a za nthaka amatha kuyeza momwe malo ogona alili, malo olumikizirana, ndi zolakwika (malo owonekera).
4. Mapu a Mizere ndi Mapu Otsetsereka
Chidziwitso cha mapu a mtunda ndi malo otsetsereka chimathandiza pakuwunika kukhazikika kwa malo otsetsereka, kukonzekera njira zofufuzira, komanso kudziwa madera omwe amakhudzidwa ndi kugwa kwa nthaka.
Kugwiritsa Ntchito Ma Drone mu Kafukufuku wa Zachilengedwe
1. Kujambula Mapu a Kapangidwe ka Dziko
Ma drone amathandiza kuzindikira ndi kupanga mapu a zolakwika, mapindidwe, mizere, ndi mapangidwe osweka. Ndi mawonekedwe apamwamba, akatswiri a za nthaka amatha kuwona tsatanetsatane womwe ndi wovuta kuwona kuchokera pamwamba, makamaka m'matanthwe kapena m'malo oopsa. Ma 3D model amalola kutanthauzira kolondola kwa kapangidwe ka nthaka.
2. Kufufuza Migodi ndi Migodi
Pofufuza miyala, ma drone amatha kuwona kusintha kwa pamwamba, njira zolowera mumsewu, malire a dzenje, ndi zinthu zosungidwa pogwiritsa ntchito kuwerengera kwa volumetric kuchokera ku zitsanzo zokwezeka. Pa migodi yotseguka, ma drone amakhalanso ndi gawo loyang'anira momwe migodi ikuyendera komanso kuwunika kukhazikika kwa mapiri.
3. Kuchepetsa Masoka a Zachilengedwe
Ma drone amagwiritsidwa ntchito kwambiri poyang'anira kugwa kwa nthaka, kukokoloka kwa nthaka, ma lahar, ndi kusintha kwa kalembedwe ka nthaka pambuyo pa masoka. Poyerekeza deta ya nthawi, kugwa kwa nthaka kumatha kufufuzidwa kuti adziwe kuchuluka kwa zoopsa ndikuyika patsogolo momwe angayankhire. M'madera omwe ali pachiwopsezo, ma drone amachepetsa chiopsezo cha ogwira ntchito kupita mwachindunji kumalo osakhazikika.
4. Mapu a Geomorphological ndi Hydrological
Deta ya DEM ndi orthophoto imathandiza pofufuza mawonekedwe a nthaka, mitsinje, mafani a alluvial, njira zoyendera madzi, ndi kusefukira kwa madzi komwe kungachitike mwadzidzidzi. Mu kafukufuku wa dothi, ma drones amathanso kuwona kusintha kwa magombe, ma delta, kapena malo osungira mitsinje.
5. Kuwunika Kuphulika kwa Phiri ndi Kutentha kwa Dziko
M'madera ophulika, ma drone amatha kufika ku ma craters kapena fumaroles mosamala kwambiri kuposa kafukufuku wa maso ndi maso. Makamera otenthetsa amatha kuzindikira kusintha kwa kutentha ndi kusintha kwa ntchito. M'madera otenthetsa, kuwona kutentha pamwamba ndi mawonekedwe a kutentha kwa dziko lapansi zitha kufotokozedwa mwatsatanetsatane.
Magawo Ogwira Ntchito Yofufuza za Geological Pogwiritsa Ntchito Ma Drones
Kawirikawiri, kafukufuku wa miyala ya drone pa nthaka amatsatira njira zotsatirazi:
1. Kukonzekera: kudziwa zolinga, malo ofikira, GSD (mtunda wopezera zitsanzo za nthaka), njira yowulukira, mtunda, ndi nyengo.
2. Kudziwa malo owongolera (GCP/RTK): kuti muwonjezere kulondola kwa malo, Malo Owongolera Pansi kapena ma drone a RTK/PPK amagwiritsidwa ntchito.
3. Kusonkhanitsa deta: maulendo a ndege amachitidwa motsatira dongosolo ndi zithunzi zokwanira zofanana (monga 70–80%) kuti photogrammetry igwiritsidwe ntchito bwino.
4. Kukonza deta: kupanga ma orthomosaics, ma DEM, mitambo ya point, ndi mitundu ya 3D.
5. Kutanthauzira kwa geology: kusanthula kwa lithology, kapangidwe kake, geomorphology, ndi kuphatikiza ndi deta ina yamunda (mapu a geology, zitsanzo za miyala, geophysics).
6. Kupereka malipoti: kukonzekera mamapu, mbiri ndi malangizo aukadaulo.
Magawo awa akhoza kusinthidwa kuti agwirizane ndi momwe zinthu zilili m'munda komanso zosowa za polojekiti.
Mavuto ndi Zinthu Zoyenera Kuzisamala
Ngakhale kuti ndi kothandiza kwambiri, kugwiritsa ntchito ma drones kumakhalabe ndi mavuto:
– Malamulo oyendetsa ndege: zilolezo, malire okwera, madera oletsedwa, ndi njira zotetezera ziyenera kutsatiridwa.
– Nyengo ndi mphepo: mphepo yamphamvu imachepetsa kukhazikika kwa deta ndi ubwino wake, makamaka m'madera amapiri kapena m'mphepete mwa nyanja.
– Mabatire ndi zinthu zoyendera: kufufuza malo akutali kumafuna kukonzekera mphamvu, mabatire owonjezera ndi zida zochapira.
– Ubwino wa deta ndi kulondola: Popanda GCPs kapena RTK/PPK, zotsatira zake zitha kukhala zosakondera. Kuyang'anira sensa ndi kuwongolera khalidwe ndikofunikira.
- Kukonza deta mozama: photogrammetry ndi LiDAR zimafuna makompyuta ndi akatswiri okwanira kuti apange zinthu zolondola.
Ndi kuchepetsa bwino mavutowa, mavutowa akhoza kuthetsedwa ndipo ma drone akhoza kukhala chida chothandiza kwambiri.
Mapeto
Ma drone oyendera malo okhala ndi zinthu za m'mlengalenga akhala ukadaulo wofunikira kwambiri, wofulumizitsa mapu, kukonza chitetezo, komanso kupereka deta yolondola kwambiri yotanthauzira zasayansi komanso yogwiritsidwa ntchito m'mafakitale. Kuyambira mapu opangidwa ndi zinthu ndi kufufuza miyala mpaka kuchepetsa masoka ndi kuyang'anira mapiri, ma drone amapereka kusinthasintha kosayerekezeka ndi njira zachikhalidwe. Chinsinsi cha kupambana chili pakusankha nsanja yoyenera ndi masensa, kukonzekera bwino ndege, komanso kukonza deta mosamala. M'tsogolomu, kuphatikiza ma drone ndi luntha lochita kupanga, kukonza nthawi yeniyeni, komanso makina owunikira opepuka kwambiri kudzapangitsa kuti kafukufuku wa malo okhala akhale wachangu, wolondola, komanso wotetezeka.
