Ⅰ. Khoma lotchinga matope linapanga milu

Forward and reverse circulation bored milu: Forward circulation ndi kuti madzimadzi othamanga amatumizidwa pansi pa dzenje ndi mpope wamatope kupyolera mu ndodo yobowola, ndiyeno amabwerera pansi kuchokera pansi pa dzenje; madzimadzi otuluka m'mbuyo amasiyana ndendende ndi njira yopita patsogolo.
1 , Dothi logwira ntchito: dothi ladongo, silt, mchenga wabwino, mchenga wapakati, mchenga wouma, nthaka yokhala ndi miyala yochepa ndi miyala (zosakwana 20%).
2, Ntchito kukula: zomangamanga zomangamanga; uinjiniya wa misewu ndi mlatho; mainjiniya a municipalities.

Percussive DrillingBowoKudzazaMulu:Kubowola mwamakina, kufinya mapaipi achitsulo kapena kufukula anthu kuti apange maenje mulu

maziko nthaka.

1,Zothekanthakamikhalidwe: dothi ladothi, dothi la ufa, dothi lamchenga, dothi lodzaza, nthaka ya miyala ndi miyala yosakanikirana.

2, Ntchito yofikira:zomangamanga; uinjiniya wa misewu ndi mlatho; mainjiniya a municipalities.

1,Zothekanthakamikhalidwe: dothi ladothi, dothi la ufa, dothi lamchenga, dothi lodzaza, nthaka ya miyala ndi miyala yosakanikirana.

2, Ntchito yofikira:amagwiritsidwa ntchito pomanga ma municipalities, misewu yayikulu ndi mlatho, zomangamanga ndi zomangamanga, mobisa

khoma la diaphragm, kusungirako madzi, kuteteza madzi, kuteteza malo otsetsereka ndi zomangamanga zina.

2, Kuchuluka kwa ntchito: nyumba zaboma ndi mafakitale pamwamba pa tebulo lamadzi la dothi lophatikizana, dothi lamchenga ndi maziko otayirapo zokumba.

(2) Bowo loboola lomwe likukulitsa mulu wapansi:Choyamba, ntchito wamba wotopetsa kubowola pang'ono kutsatira wamba kubowola njira kubowola mu lakonzedwa atagwira wosanjikiza malinga ndi awiri a mulu thupi, ndiye kuchotsa zida pobowola ndi m'malo wamba kubowola pang'ono ndi wapadera kukula pansi kubowola pang'ono mpaka pansi. wa dzenje kupanga mutu wokulirapo mwa kukulitsa m'mimba mwake mwa mulu pansi.

Choyamba ntchito wamba wotopetsa kubowola pang'ono kutsatira ambiri kubowola njira kubowola molingana ndi m'mimba mwake mulu thupi kwa cholinga kubala wosanjikiza, ndiye kuchotsa pobowola chida, m'malo wamba kubowola pang'ono ndi wapadera pansi-wokulitsa kubowola pang'ono. pansi pa dzenje, ndikukulitsa m'mimba mwake mwa muluwo kuti mupange mutu wokulitsa.

1, Dothi logwira ntchito: dothi lolimba, lolimba la pulasitiki pamwamba pa tebulo lamadzi ndi mchenga ndi miyala ya miyala yomwe ili pamwamba pa kachulukidwe wapakati.

2, Kuchuluka kwa ntchito: nyumba zaboma ndi mafakitale pamwamba pa tebulo lamadzi la dothi lophatikizana, dothi lamchenga ndi maziko otayirapo zokumba.