Steel sheet pawg cofferdam kev tsim kho yog ib qhov project ua nyob rau hauv dej los yog ze dej, aiming los tsim ib tug qhuav thiab nyab xeeb ib puag ncig rau kev tsim kho. Kev tsim kho tsis tu ncua lossis tsis ua kom raug txheeb xyuas qhov cuam tshuam ntawm ib puag ncig xws li av zoo, dej ntws, dej tob siab, thiab lwm yam ntawm tus dej, pas dej, thiab dej hiav txwv thaum tsim kho yuav ua rau muaj kev nyab xeeb ntawm kev tsim kho.
Cov txheej txheem tseem ceeb thiab kev tswj xyuas kev nyab xeeb ntawm steel ntawv pawg cofferdam kev tsim kho:
I. Kev tsim kho txheej txheem
1. Kev npaj kev tsim kho
○ Kev kho qhov chaw
Lub tshuab filling yuav tsum tau compacted txheej los ntawm txheej (qhov pom zoo txheej thickness yog ≤30cm) kom ntseeg tau tias cov kabmob muaj peev xwm ua tau raws li cov kev xav tau ntawm kev ua haujlwm.
Txoj kab nqes ntawm cov kwj deg yuav tsum yog ≥1%, thiab lub tank yuav tsum tau teem kom tiv thaiv cov av thaiv.
○ Kev npaj khoom siv
Kev xaiv pawg steel: Xaiv cov pawg raws li daim ntawv qhia txog geological (xws li Larsen IV hom rau cov av mos thiab U hom rau gravel txheej).
Tshawb xyuas qhov kev ruaj ntseg ntawm lub xauv: Siv butter lossis sealant ua ntej kom tiv thaiv kom tsis txhob tawg.
2. Kev ntsuas thiab kev teeb tsa
Siv tag nrho cov chaw nres tsheb rau qhov tseeb qhov chaw, teeb tsa pawg tswj hwm txhua 10m, thiab xyuas qhov tsim axis thiab qhov siab sib txawv (tso cai yuam kev ≤5cm).
3. Qhia ncej installation
Qhov sib nrug ntawm ob kab kab hlau qhia kab teeb yog 1 ~ 2cm loj dua qhov dav ntawm cov ntawv steel pawg los xyuas kom meej tias qhov sib txawv ntawm qhov verticality tsawg dua 1%.
Cov kab lus qhia yuav tsum tau kho los ntawm cov hlau vuam los yog bolting kom tsis txhob muaj kev hloov pauv thaum vibration piling.
4. Hlau ntawv pawg tso
○ Pleev tsav tsheb ib ntus: Pib los ntawm kaum pawg, kaw qhov sib txawv ntawm sab ntev mus rau nruab nrab, lossis siv "screen-style" pab pawg tsim kho (10 ~ 20 pawg ib pawg).
○ Kev tswj xyuas:
Lub verticality sib txawv ntawm thawj pawg yog ≤0.5%, thiab tom qab pawg pawg yog kho los ntawm "teeb tsav tsheb".
○ Pile tsav tus nqi: ≤1m / min hauv cov av mos, thiab lub dav hlau dej siab siab yuav tsum tau pab txhawm rau txhawm rau hauv cov av tawv.
○ Kev kho kaw: Yog tias qhov seem seem tsis tuaj yeem muab tso nrog cov txheej txheem, siv cov pawg tshwj xeeb (xws li cov kab npoo) los yog vuam kom kaw.
5. Lub hauv paus qhov khawb av thiab cov kua dej
○ Layered excavation (txhua txheej ≤2m), kev txhawb nqa raws li kev khawb, kev txhawb nqa sab hauv ≤3m (thawj qhov kev txhawb nqa yog ≤1m ntawm sab saum toj ntawm lub qhov).
○ Cov dej ntws tawm: Qhov sib nrug ntawm qhov dej sib sau yog 20 ~ 30m, thiab cov twj tso kua dej submersible (ntev tus nqi ≥10m³ / h) yog siv rau kev siv txuas mus ntxiv.
6. Backfill thiab pawg rho tawm
Backfill yuav tsum tau compacted symmetrically nyob rau hauv cov khaubncaws sab nraud povtseg (compaction degree ≥ 90%) kom tsis txhob deformation ntawm lub cofferdam vim unilateral siab.
Pile extraction sequence: tshem tawm ntawm nruab nrab mus rau ob sab hauv ib ntus, thiab txhaj dej los yog xuab zeb ib txhij kom txo cov av cuam tshuam.
II. Kev Tswj Xyuas Kev Nyab Xeeb
1. Tswj kev pheej hmoo
○ Kev tiv thaiv kev thim rov qab: Kev saib xyuas lub sijhawm tiag tiag ntawm cofferdam deformation (tso tseg kev tsim kho thiab ntxiv dag zog thaum tus nqi inclination ntau dua 2%).
○ Tiv thaiv kom tsis muaj dej: Tom qab piling, dai ib lub mesh rau sab hauv kom txau cov grout los yog nteg cov dej tsis zoo geotextile.
○ Kev tiv thaiv kev poob dej: teeb tsa cov neeg saib xyuas (qhov siab ≥ 1.2m) thiab cov khoom siv sia / hlua ntawm lub platform ua haujlwm.
2. Teb rau cov haujlwm tshwj xeeb
○ Tidal cuam tshuam: Nres ua haujlwm 2 teev ua ntej dej nyab thiab xyuas qhov kev sib khi ntawm cofferdam.
○ Cov lus ceeb toom los nag hnyav: Npog lub hauv paus lub qhov taub ua ntej thiab pib cov khoom siv rov qab los (xws li cov twj siv hluav taws xob siab).
3. Kev tswj hwm ib puag ncig
○ Kev kho av nkos: Teeb lub tank peb-theem sedimentation thiab tso tawm tom qab ua tiav cov qauv.
○ Kev tswj lub suab nrov: txwv cov khoom siv suab nrov thaum hmo ntuj kev tsim kho (xws li siv cov tsav tsheb siab zoo li qub).
Ⅲ. Qhov tseem ceeb technical parameter siv
IV. Tej teeb meem thiab kev kho mob
1. Pile deviation
Ua rau: cov khoom tawv hauv cov av txheej lossis kev txiav txim tsis raug ntawm piling.
Kev Kho Mob: Siv "cov kab kho kom rov qab" rov qab txhaj tshuaj lossis cov pawg hauv zos.
2. Xauv xau
Kev Kho Mob: Sau cov hnab av nplaum rau sab nraud thiab txhaj tshuaj polyurethane foaming tus neeg sawv cev rau sab hauv kom kaw.
3. Lub hauv paus pit uplift
Kev Tiv Thaiv: Ua kom nrawm ntawm kev tsim kho ntawm lub phaj hauv qab thiab txo lub sij hawm raug.
V. Summary
Kev tsim kho ntawm steel ntawv pawg COFFerdams yuav tsum tsom rau cov qauv "ruaj khov), thiab kev kaw ruaj khov (thiab kho kom haum cov txheej txheem ua ke nrog geological. Rau thaj chaw dej tob lossis cov strata, "kev txhawb nqa ua ntej thiab tom qab ntawd khawb" lossis "cofferdam sib xyaw" (steel sheet pile + pob zeb tiv thaiv phab ntsa) tuaj yeem siv tau. Nws qhov kev tsim kho muaj qhov sib xyaw ua ke ntawm lub zog thiab lub zog. Qhov sib npaug zoo tshaj plaws ntawm tib neeg thiab xwm txheej tuaj yeem ua kom muaj kev vam meej ntawm kev tsim kho thiab txo qis kev puas tsuaj thiab pov tseg ntawm cov peev txheej ntuj.
If you have any further questions or demands, please feel free to contact Ms. Wendy. wendy@jxhammer.com
whatsapp/wechat: +86 183 5358 1176
Lub sij hawm xa tuaj: Mar-10-2025