Rotary drilling rigs yog cov cuab yeej tsim kho tsim nyog rau lub qhov- ua haujlwm hauv lub hauv paus engineering. Nyob rau hauv xyoo tas los no, lawv tau dhau los ua lub hauv paus tseem ceeb ntawm pawg thawj coj hauv kev tsim choj hauv Suav teb. Rotary drilling rigs, thaum siv nrog cov cuab yeej drilling sib txawv, yog tsim rau qhuav (luv auger), ntub dej (rotary thoob), thiab pob zeb (core laum) qhov- ua haujlwm. Lawv muaj lub zog nruab siab, siab tso zis torque, siab axial siab, siab maneuverability, kev tsim kho siab, thiab ntau yam -functionality. Qhov ntsuas lub zog ntawm cov tshuab drilling rigs feem ntau yog 125-450 kW, lub zog tso zis torque yog 120-400 kN•m, qhov siab tshaj plaws lub qhov taub tuaj yeem ncav cuag 1.5-4 m, thiab qhov siab tshaj plaws qhov tob yog 60-90 m, uas tuaj yeem ua tau raws li qhov yuav tsum tau muaj ntawm ntau yam loj - nplai lub hauv paus kev tsim kho.av drilling tshuab nqe
Hauv kev tsim choj hauv thaj chaw uas muaj geology nyuaj, feem ntau siv pawg hauv paus kev tsim kho yog phau ntawv excavation thiab percussion drilling. Kev khawb ntawm phau ntawv yog maj mam raug txiav tawm vim nws lub voj voog kev tsim kho ntev, cov thev naus laus zis tsis tu ncua, thiab muaj kev nyab xeeb tseem ceeb cuam tshuam nrog kev ua haujlwm blasting. Percussion drilling kuj nthuav tawm cov teeb meem, feem ntau nws qeeb heev drilling ceev hauv cov pob zeb nyuaj, qee zaum ua rau tsis muaj kev vam meej. Hauv thaj chaw uas muaj qhov zoo-tsim karst topography, laum jams yog nquag, feem ntau yuav tsum tau 1-3 lub hlis lossis ntev dua los ua kom tiav ib pawg dhuav. Siv rotary drilling rigs rau pawg hauv paus kev tsim kho kom nce kev tsim kho ceev, txo cov nqi, thiab ua kom pom kev zoo dua. Piv txwv li, nyob rau hauv Shenyang seem ntawm lub Harbin -Dalian High-Speed Railway, tshaj 95% ntawm cov pawg hauv paus tsim los ntawm Tuam Tshoj Railway Ninth Bureau tau ua tiav siv teb drilling. Txawm hais tias muaj kev txwv hnyav rau lub sijhawm tsim kho vim muaj teeb meem hloov chaw, kev tsim kho choj tseem ceeb tau ua tiav ib xyoos ua ntej lub sijhawm.
Rotary drilling rigs yog sib xyaw nrog pawg hauv paus engineering thiab kev tsim kho tshuab. Txawm li cas los xij, vim muaj kev siv dav dav ntawm cov tshuab drilling rigs tsuas yog nyob rau xyoo tas los no, kuv lub teb chaws tam sim no tsis muaj cov qauv kev tsim kho dav dav rau lawv, tshwj xeeb tshaj yog rau kev tsim kho pob zeb hauv cov pob zeb nyuaj, qhov kev tshawb fawb txog kev tsim kho tsis tau ua. Kab lus no, raws li Gannan Txoj Kev Sib Pauv thiab Txuas Ntxiv Txoj Haujlwm, sub- txoj haujlwm ntawm Gannan Txoj Kev thiab Qinan Kab BT qhov project tau ua los ntawm Tuam Tshoj Railway Ninth Bureau Group Dalian Construction Co., Ltd., tsom rau kev qhia txog kev tsim cov txheej txheem ntawm boring piles siv teb drilling rigs nyob rau hauv nruab nrab thiab me ntsis weathered (0str 3 stratum) txheeb ze ntawm limeeng. hard pob zeb, muab ib tug siv rau teb drilling pawg siv nyob rau hauv zoo sib xws strata.
Kev tsim kho yam ntxwv:
1. High Drilling Speed: Lub laum me ntsis kev npaj thiab cov qauv ntawm lub teb drilling rig lub pob zeb core laum ntsis yog tsim raws li pob zeb tawg txoj kev xav, tso cai rau ncaj qha drilling mus rau hauv lub pob zeb strata, yog li ua rau siab drilling ceev thiab txhim kho kev tsim kho.
2. ** Kev Tswj Xyuas Zoo Zoo:** Rotary drilling rigs feem ntau yog nruab nrog 2m txoj kab uas hla borehole casing (uas tuaj yeem ncua ntev yog tias cov av rov qab ntawm lub qhov qhib qhib yog tuab). Lub rig nws tus kheej kuj tseem tuaj yeem embed lub casing, txo qhov cuam tshuam ntawm backfill av ntawm cov drilled pawg. Rotary drilling rigs siv cov txheej txheem dej hauv qab dej tremie pob zeb ua kom paub tab, zam qhov tsis zoo ntawm cov av nkos poob los ntawm qhov qhib qhov qhib thiab cov av av tsim thaum lub sij hawm nchuav. Raws li lub hauv paus kev tsim kho tshuab ua ke nrog cov kev tshawb fawb thiab thev naus laus zis niaj hnub no, rotary drilling rigs muab kev ua haujlwm siab nyob rau hauv verticality, hauv qab pob zeb txheej tshuaj xyuas, thiab pawg ntev tswj thaum lub sij hawm tsim kho borehole. Tsis tas li ntawd, cov av me me nyob rau hauv qab ntawm lub qhov borehole pab kev tu, yog li ua kom lub siab zoo ntawm pawg hauv paus kev tsim kho.
3. ** Muaj zog Adaptability rau Geological Formations:** Rotary drilling rigs yog txawm peem rau nrog sib txawv laum khoom thiab yuav siv tau nyob rau hauv ntau yam geological formations xws li xuab zeb, av, gravel, thiab pob zeb, tsis muaj kev txwv geographical.
4. ** Yooj yim txav tau yooj yim thiab muaj peev xwm txav tau siab:** Rotary drilling rigs siv lub tshuab excavator chassis, cia lawv txav mus los ntawm nws tus kheej. Tsis tas li ntawd, rotary drilling rigs tuaj yeem ua haujlwm ntawm nws tus kheej, yog cov xov tooj ntawm tes, hloov mus rau qhov nyuaj, thiab tsis tas yuav muaj cov chaw pabcuam rau kev teeb tsa thiab rhuav tshem. Lawv nyob qhov chaw me me thiab tuaj yeem ua haujlwm tiv thaiv phab ntsa.
5. Ib puag ncig tus phooj ywg thiab huv si siv qhov chaw: Rotary drilling rigs tuaj yeem ua haujlwm hauv cov pob zeb tsim tsis muaj av nkos, txo cov dej pov tseg thiab zam cov av nkos ntawm ib puag ncig. Yog li ntawd, rotary drilling rig siv qhov chaw huv si thiab ua rau muaj kuab paug tsawg.
Scope of Application: Txoj kev no feem ntau yog siv rau cov teb drilling rig dhuav pawg kev tsim kho nyob rau hauv nruab nrab weathered thiab me ntsis weathered pob zeb formations nrog kuj nyuaj pob zeb.
Technical Principple:
1. Txoj Cai Tsim: Raws li txoj cai ua haujlwm ntawm rotary drilling rigs, ua ke nrog cov cuab yeej cuab tam ntawm pob zeb thiab cov kev xav ntawm cov pob zeb sib tsoo pob zeb tawg, cov pawg sim tau drilled nyob rau hauv nruab nrab weathered limestone formations nrog cov pob zeb nyuaj. Cov kev tsis sib haum xeeb thiab kev lag luam ntawm cov txheej txheem sib txawv ntawm cov txheej txheem drilling rigs teb tau raug txheeb xyuas. Los ntawm kev sib piv cov txheej txheem kev lag luam thiab kev lag luam thiab kev txheeb xyuas, txoj kev tsim kho rau rotary drilling rig drilled pawg nyob rau hauv nruab nrab huab cua limestone tsim nrog cov pob zeb nyuaj thaum kawg txiav txim siab.
2. Lub hauv paus ntsiab lus ntawm rotary drilling rig qhov tsim nyob rau hauv pob zeb formations: Los ntawm equipping rotary drilling rigs nrog ntau hom laum khoom, staged qhov o o yog ua nyob rau hauv hard pob zeb formations. Qhov no tsim ib qho chaw dawb nyob rau hauv qab ntawm lub qhov rau lub laum me ntsis, kev txhim kho qhov drilling rig muaj peev xwm nkag mus rau hauv pob zeb thiab thaum kawg ua tiav cov pob zeb zoo drilling thaum txuag cov nqi tsim kho.
Kev tsim kho thiab cov ntsiab lus tseem ceeb ntawm kev ua haujlwm:
Rau cov ncauj lus kom ntxaws kev tsim kho tshuab ntawm cov yeeb nkab piles, thov mus saib cov txheej txheem kev tsim kho ndlwg.
II. Cov ntsiab lus tseem ceeb ntawm Kev Tsim Kho Kev Ua Haujlwm:
1. Pile Position Control: Txhawm rau kom ntseeg tau qhov zoo ntawm pawg, ib txoj kev ntsuas qhov tseeb raug saws, uas yog, qhov chaw nrog tag nrho cov chaw nres tsheb. Tom qab lub casing raug ntsia, ib tug re- ntsuas yog ua, thiab ib tug welded coordinate thav duab yog siv los xyuas kom meej tias qhov chaw ntawm lub casing yog raws li nyob rau hauv nruab nrab ntawm cov pawg.
2. Pile Inclination Control: Lub casing yog ntsia siv tus ntoo khaub lig- zoo li txoj kev nyob rau sab sauv thiab qis kawg ntawm nws txoj kab uas hla. Dhau los ntawm ob lub ntsiab lus hauv nruab nrab kom ntseeg tau qhov verticality ntawm lub casing. Lub borehole inclination yog ntsuas raws sij hawm thaum lub sij hawm drilling los xyuas kom meej tias inclination tus nqi yog tsawg tshaj li 1%. Yog tias pom muaj kev xav ntau dhau lawm, kev kho yuav raug muab tam sim ntawd.
3. Pile Diameter Control: Qhov kev xaiv tsim nyog ntawm lub laum me ntsis txoj kab uas hla raws li cov xwm txheej geological plays lub luag haujlwm tseem ceeb hauv pawg tswj txoj kab uas hla. Lub borehole txoj kab uas hla yuav ua tau 10-500px loj dua lub laum me ntsis txoj kab uas hla.
4. Pile Length Control: Thaum lub sij hawm tsim kho, qhov siab ntawm qhov qhib qhov rooj yuav tsum raug hloov mus rau ntau qhov kev tsim kom siab. Qhov ntev ntawm cov cuab yeej yuav tsum raug ntsuas kom raug, suav nrog cov hlua hlau ntev, suav nrog qhov elongation hauv qab load. Txhua qhov yuam kev raug kho tam sim ntawd. 5. Pile Top Control: Thaum cov pob zeb kawg tau nchuav, txiav txim siab qhov tuab ntawm cov slag thiab suav thiab kho qhov ntim ntawm cov khoom kawg. Tom qab pouring, rov xyuas cov pawg saum toj siab. Yog tias nws ua tau raws li cov qauv tsim, tshem tawm cov yeeb nkab qhia; txwv tsis pub, ntxiv pob zeb ntau ntxiv.av drilling tshuab nqe
6. Pile Lub Cev Structure Control: Lub fabrication ntawm lub reinforcing tawb yuav tsum tsis txhob ntau tshaj qhov tso cai yuam kev uas teev nyob rau hauv cov qauv, nrog rau txoj kev lap splice thiab ntev ntawm lub ntsiab reinforcement. Tag nrho cov ntaub ntawv ntawm lub tawb nqa khoom yuav tsum tau kuaj xyuas thiab sau tseg raws li cov haujlwm zais cia. Xyuas kom cov yeeb nkab qhia tau zoo kaw. Thaum txav cov yeeb nkab qhia thaum lub sij hawm nchuav, tsis txhob tsa nws ntau dhau los tiv thaiv kev raug mob zoo xws li av nkos thiab pawg tawg.
7. Raw Material Control: Rau txhua pawg ntawm cov khoom siv hlau, cov cement, cov khoom sib xyaw, thiab lwm yam khoom siv raw, nruj me ntsis xyuas cov qib, hnub tsim khoom, thiab cov ntaub ntawv pov thawj cov ntaub ntawv xws li cov ntaub ntawv pov thawj ntawm lub Hoobkas, thiab ua random sampling tshuaj xyuas. Tsuas yog cov ntaub ntawv uas ua tau raws li txhua qhov ntsuas kev ua tau zoo tuaj yeem siv tau. Kev siv cov txheej txheem tsis zoo los yog tas sij hawm hardened cement yog nruj me ntsis txwv.
III. Kev tsim kho tseem ceeb:
1. Pile Position Measurement and Layout: Ib qho chaw nres tsheb tag nrho yog siv los nteg tawm qhov chaw nruab nrab ntawm pawg. Tom qab kev teeb tsa, cov pawg tiv thaiv tau teeb tsa nyob ib puag ncig ib puag ncig thiab kev ntsuas rov ua dua, nrog rau qhov yuam kev tswj tsis pub dhau 5 hli. Raws li cov ntsiab lus tswj tau muab hauv kev tsim qauv, lub network tswj tau teeb tsa ntawm - qhov chaw siv tag nrho cov chaw nres tsheb thiab tau lees paub. Raws li qhov sib koom ua ke ntawm pawg hauv paus lub hauv paus axis, pawg hauv paus centerline thiab nruab nrab taw tes yog nteg tawm siv txoj kev sib koom ua ke, thiab cov cim kos npe tau raug tsav los. Tus lej ntawm ceg txheem ntseeg raug cim rau ntawm ceg txheem ntseeg.
2. Site Leveling: Lub qhov drilling rig chassis yuav tsum tsis txhob muab tso ncaj qha rau ntawm qhov tsis ruaj khov kom tsis txhob muaj kev sib haum xeeb. Rau qhov chaw qhuav qhov twg cov dej hauv av qis dua qhov qub hauv av thaum lub sij hawm tsim kho, qhov chaw yog leveled, compacted, thiab cov khib nyiab tshem tawm. Thaum lub tsev kawm ntawv nyob rau hauv dej ntiav, ib kob yog tsim, thiab lub drilling rig yog muab tso rau saum nws. Sab saum toj ntawm cov kob yog kwv yees li 1.0m siab tshaj qhov kev tsim kho dej theem . 3. Drill Rig Positioning: Tsiv lub pob zeb drilling mus rau qhov chaw tsim kho. Thaum muab tso rau lub rig, lub siab tshaj plaws ntawm inclination rau lub dav hlau yuav tsum tsis txhob ntau tshaj 4 degree. Kho lub mast lub kaum sab xis, khiav lub winch, kho lub laum me ntsis chaw nrog lub borehole chaw, thiab kho lub drilling rig qhov verticality tsis kom ntseeg tau tias lub laum pas nrig yog ntsug.
4. Casing Installation: Casing installation siv txoj kev excavation. Ib qho kev xyaum tshwj xeeb yog siv los khawb cov av txheej uas lub casing yuav raug ntsia, thiab tom qab ntawd lub casing muab tso rau hauv. Kev teeb tsa yuav tsum yog, kab rov tav, ntsug, thiab ruaj khov. Backfill lub casing nrog av nplaum thiab compact nws. Cov kab hauv nruab nrab ntawm qhov drilling rig qhia pas nrig, cov lus teb, thiab cov casing yuav tsum tau khaws cia rau hauv txoj kab ncaj nraim. Qhov sib txawv ntawm qhov chaw nruab nrab ntawm qhov chaw nruab nrab ntawm qhov chaw tsim khoom yuav tsum tsis pub tshaj 20mm, thiab qhov sib txawv ntawm qhov ntsug ntawm cov hlau casing yuav tsum tsis txhob ntau tshaj 0.5%, kom ntseeg tau tias qhov drilling rig ua haujlwm zoo raws li txoj kab ntsug ntawm pawg.
5. Rotary Drilling: Thaum lub sij hawm rotary drilling txheej txheem, tus neeg teb xov tooj lossi soj ntsuam lub laum pas nrig lub verticality thiab tswj qhov tob drilling siv lub qhov tob txee. Lub drilling ntawm drill piles ntiav ib tug staged reaming txoj kev: Ua ntej, ib tug me me - txoj kab uas hla core laum me ntsis nrog ib tug xuab zeb - sau thoob yog siv los laum mus rau qhov tob tsim. Tom qab ntawd, qhov loj dua - txoj kab uas hla me me nrog cov xuab zeb- khaws lub thoob yog siv rau theem tom ntej ntawm reaming kom txog rau thaum lub borehole txoj kab uas hla thiab qhov tob raws li tus qauv tsim, thaum kawg ua tiav borehole ua tiav los ntawm rotary drilling rig.
6. Kev Tshuaj Xyuas Qhov Ncauj: Tom qab lub borehole ncav cuag qhov siab tsim, lub qhov tob, txoj kab uas hla, phab ntsa thickness, thiab verticality raug tshuaj xyuas. Yog tias pom muaj qhov tsis xws luag, kev kho yuav raug muab coj los ntsuas. Txoj kev tshuaj xyuas nyob ntawm lub qhov taub. Thaum lub borehole qhuav, ib lub rauj hnyav tuaj yeem siv los ua kom cov av xoob sab hauv, thiab lub borehole tuaj yeem ntsuas ncaj qha siv txoj hlua ntsuas thiab ntsuas qhov ntsuas qhov ntsuas. Yog tias cov dej hauv av muaj nyob hauv qhov borehole, lub twj tso kua mis -suction thim rov qab txoj kev tuaj yeem siv los ntxuav lub qhov. Hauv qhov no, underwater qhob pouring yog siv rau kev ntsuas borehole.
7. Kev Tu Qhov Ncauj: Cov av tshem tawm ntawm qhov borehole. Ua ntej nchuav cov pob zeb hauv qab dej, qhov tuab ntawm cov pob zeb hauv qab ntawm lub qhov yuav tsum tsis txhob ntau tshaj 125px rau cov kab ke thiab 500px rau cov kab sib txhuam . 8. Kev thauj mus los thiab ntawm - qhov chaw Lifting ntawm Reinforced Steel Cage Lub tawb steel reinforcing yuav tsum tau tiv thaiv los ntawm deformation thaum thauj mus rau qhov chaw pawg. Thaum thauj los ntawm lub tsheb thauj khoom, xyuas kom meej tias cov ntsiab lus txhawb nqa tau muab rau ntawm txhua qhov txhav txhav, nrog rau txhua qhov kev txhawb nqa ntawm qhov siab sib npaug. Lub tawb nqa khoom yog nqa mus rau hauv lub qhov borehole siv lub crane. Ib tug ob-point lifting method yog siv thaum lub sij hawm installation. Thawj qhov lifting point yog nyob rau hauv qab ntawm lub tawb, thiab qhov thib ob lifting point yog nyob nruab nrab ntawm lub midpoint thiab lub sab sauv peb ntawm lub tawb qhov ntev. Kev ntsuas yuav tsum tau ua los txhawb nqa cov ntsiab lus nqa kom tsis txhob deformation thaum nqa. Thaum txo qhov kev txhawb nqa lub tawb rau hauv lub qhov borehole, nws yuav tsum tau ua raws li lub borehole txoj kab uas hla, khaws cia ntsug, thiab maj mam thiab maj mam txo qis. Tom qab kev ntxig, nws yuav tsum tau qis qis, tsis txhob tig sab laug lossis sab xis, thiab nruj me ntsis txwv tsis pub viav vias lossis kev sib tsoo nrog phab ntsa borehole. Yog tias muaj kev cuam tshuam, kev txo qis yuav tsum tau nres, qhov ua rau raug tshawb xyuas, thiab kho. Kev nqa siab thiab kev txo qis tam sim ntawd, nrog rau kev quab yuam kom qis qis, raug txwv nruj heev. Qhov chaw ntawm qhov siab tshaj plaws ntawm lub tawb yuav tsum tau muab xam raws li qhov ntsuas qhov ntsuas qhov siab kom txiav txim siab qhov ntev ntawm qhov chaw qhov chaw. Txhawm rau tiv thaiv lub tawb ntxiv los ntawm kev poob los yog ntab thaum lub sij hawm grouting, lub tawb yog positioned siv threaded reinforcing tuav tshem tawm los ntawm steel casing. Qhov nruab nrab ntawm lub tawb nqa khoom yog ua raws li qhov tsim ntawm pawg. Tom qab rov ua pov thawj, nws yog welded thiab muab tso rau hauv lub steel casing, ua kom tiav lub installation ntawm lub reinforcing tawb. Qhob yog poured nyob rau hauv 6 teev tom qab lub reinforcing tawb yog positioned los tiv thaiv borehole vau.
9. Secondary Borehole Cleaning: Tom qab lub tawb nqa khoom txo qis thiab tsau rau hauv qhov chaw, cov yeeb nkab tremie yog tam sim ntawd tso. Nws yog hoisted thiab txuas ntxiv los ntawm ntu siv lub crane, nrog rau qis kawg ntawm cov yeeb nkab tremie 500mm los ntawm hauv qab ntawm lub borehole. Tom qab lub pob zeb tremie yeeb nkab tau muab tso rau, yog tias lub thickness ntawm cov sediment nyob rau hauv qab ntawm lub borehole tsis ua tau raws li qhov yuav tsum tau tsim, ib tug thib ob borehole tu yog ua los ntawm cov tremie yeeb nkab. Tom qab tus kws ua haujlwm saib xyuas ntawm - qhov chaw tshuaj xyuas thiab kev pom zoo, lub luj tshib nqus tau raug tshem tawm tam sim ua ntej cov pob zeb hauv qab dej tuaj yeem pib.
10. Drilled Pile Concrete Pouring: Thaum lub pob zeb pib pib, nws yuav tsum ua kom tsis tu ncua thiab tsis cuam tshuam. Qhov tob ntawm cov pob zeb hauv qhov hauv pawg yog ntsuas txhua 30 feeb (lub sijhawm luv luv mus rau 5-15 feeb tom qab cov txheej txheem nchuav thiab rau qhov ntiav ntiav). Qhob pouring qhov taw qhia daim duab kos duab thiab theoretical thiab tiag curves uas qhia lub pob zeb pouring ntim piv rau qhov tob yog tam sim ntawd kos los coj lub dismantling ntawm tremie yeeb nkab. Thaum lub ntim ntawm cov pob zeb nchuav tsis sib haum rau txoj hauj lwm ntawm cov pob zeb saum npoo, qhov laj thawj yuav tsum tau txheeb xyuas raws sijhawm, qhov teeb meem yuav tsum raug txheeb xyuas, thiab qhov teeb meem yuav tsum tau hais tam sim ntawd.av drilling tshuab nqe
