Iyo bhiriji murwi hwaro inoumbwa nemirwi yakawanda inofambiswa kana kunyura muvhu uye inotakura chikuva inobatanidza murwi wepamusoro. Mukuvaka mabhiriji kwemazuva ano, nheyo dzemirwi dzinonyanya kugadzirwa nekongiri yakasimbiswa. Mumakumi emakore achangopfuura, murwi wakasimbiswa wekongiri wakafinhwa wakakura nokukurumidza pasi rose. Kusarudza mudziyo wekuchera unoshanda unogona kuita kuti kuvakwa kwemurwi kuve nyore. Yichen auger chishandiso chakanakisa chekuchera. Iyo auger yakashongedzerwa nemhando dzakasiyana dzemapombi ekuchera, uye iyo yakakura yekuchera dhayamita inogona kusvika 1-2m; Panguva imwecheteyo, yakashongedzerwawo nematanda ekuwedzera ehurefu hwakasiyana, uye iyo yakanyanya kudzika yekuchera inogona kusvika 12m. Auger akatora chikamu mumapurojekiti akawanda ekuvaka mabhiriji kuti asangane nezvinodiwa zvakasiyana-siyana zvekuvaka bhiriji murwi faundesheni.
Yichen drum cutter ine mabasa mazhinji uye yakakodzera kune akasiyana mapurojekiti emanisipala
Serudzi rutsva rwemidziyo yemazuva ano yekuvaka, chigubhu chekucheka chine mabasa akasiyana siyana uye chinogona kutsiva zvakakwana midziyo yechinyakare yakadai sekupwanya sando uye hydraulic shear. Naizvozvo, inogona kuvonekwa mumapurojekiti mazhinji emanisipala akadai sekuvaka migwagwa yakatendeseka, kuvakwa kwetunnel uye kuvakwa kwepombi yepasi pevhu. Drum cutter yakakamurwa kuita longitudinal drum cutters (kuchera musoro) uye transverse madhiramu anocheka. Iko kushandiswa kwemhando mbiri dzechigubhu chekucheka mubasa rekushandisa kwakasiyanawo.
Iyo inochinjika dhiramu yekucheka inokodzera kumilling pavement uye madziro. Mukuvaka migwagwa yemumaguta, chigubhu chedhiramu chinogona kuputsa zvakananga simende inofamba ichavakwa. Zvimedu zvesimende zvakaputswa zviri muchimiro chezvimedu zvidiki, izvo zvinogona kushandiswa zvakananga kudzosera iyo subgrade, kuona kushandiswazve kwezviwanikwa uye kuderedza mutengo weprojekiti. Kushanda kwekushandisa milling excavator kuputsa simende pavement kwakakwira zvakanyanya kupfuura zvechinyakare midziyo yakaita sekupwanya nyundo. Icho midziyo yekuvaka yakanakisa zvikuru. Iyo horizontal drum cutter inoitawo basa rakakura mukuvaka pombi. Kazhinji, madhiramu madiki anocheka anoshandiswa kugayo nekuchera pombi ane maumbirwo akajairika kufambisa kunotevera kuvaka uye kurerutsa kuoma kwekuvaka.
Longitudinal drum cutter (kuchera misoro) inonyanya kushandiswa mukugadzira tunnel engineering. Kutanga, iyo longitudinal dhiramu yekucheka inogona kuchera zvakananga uye kuchera pasi pevhu mapaipi; Kechipiri, iyo longitudinal dhiramu yekucheka inogona kuisirwa pamushini wenhoo uye pombi jacking muchina kuti uone kucherwa kwematanho makuru. Kune akawanda marudzi e longitudinal drum cutters ane madhayamita akasiyana, uye madhayamita emaguyo matani akasiyanawo zvakanyanya. Vatengi vanogona kusarudza zvinoenderana nezvavanoda.
——Yichen muUtility Basa