Steel sheet pile cofferdam kuvaka ipurojekiti inoitwa mumvura kana pedyo nemvura, ine chinangwa chekugadzira nzvimbo yakaoma uye yakachengeteka yekuvaka. Kuvaka kusingaite kana kutadza kunyatso ziva kukanganisa kwezvakatipoteredza semhando yevhu, kuyerera kwemvura, kudzika kwemvura, nezvimwewo zverwizi, dhamu, nenyanza panguva yekuvaka zvinozokonzera tsaona dzekuchengetedza pakuvaka.
Iyo huru maitiro uye yekuchengetedza manejimendi mapoinzi esimbi pepa murwi cofferdam kuvaka:
I. Nzira yekuvaka
1. Kugadzirira kwekuvaka
○ Kurapwa panzvimbo
Iyo yekuzadza puratifomu yekuvaka inoda kuumbwa nedhizaini (iyo yakakurudzirwa dhizaini ukobvu ndeye ≤30cm) kuti ive nechokwadi chekuti kutakura kutakura kunosangana nezvinodiwa zvemuchina kushanda.
Kutenuka kwegomba remvura kunofanirwa kunge kuri ≥1%, uye tangi yekudzikisa inofanira kuiswa kudzivirira kuvhara silt.
○ Kugadzirira zvinhu
Sarudzo yemurwi wesimbi: Sarudza rudzi rwemurwi zvinoenderana nerondedzero yejoloji (semhando yeLarsen IV yevhu rakapfava uye U yemhando yegravel layer).
Tarisa kutendeseka kwekiyi: Isa bhotela kana sealant pachine nguva kudzivirira kubuda.
2. Kuyera uye marongerwo
Shandisa chiteshi chese chekumisikidza, isa mirwi yekudzora yega 10m, uye tarisa dhizaini axis uye kutsauka kwekukwirira (kukanganisa kunobvumirwa ≤5cm).
3. Nhungamiro yekuisa furemu
Kupatsanurwa pakati pekaviri-mutsara simbi inotungamira matanda i1 ~ 2cm yakakura kupfuura hupamhi hwemapepa esimbi mirwi kuti ive nechokwadi chekuti verticality kutsauka iri pasi pe1%.
Iwo matanda egwara anofanirwa kugadziriswa nesimbi welding kana bolting kudzivirira kutamiswa panguva yekuzunguza piling.
4. Steel sheet pile kuisa murwi
○ Kutevedzana kwekutyaira: Tanga kubva pamurwi wekona, vhara gwanza parutivi rurefu kusvika pakati, kana shandisa "screen-style" kuvaka boka (10~20 mirwi paboka).
○ Kudzora kwehunyanzvi:
Kutsauka kweiyo verticality yemurwi wekutanga ndeye ≤0.5%, uye iyo inotevera murwi muviri inogadziriswa ne "set drive".
○ Murwi wekutyaira: ≤1m/min muvhu rakapfava, uye high-pressure yejeti yemvura inodiwa kubatsira kunyura muvhu rakaoma.
○ Mabatirwo ekuvhara: Kana gwanza rasara risingakwanisi kuiswa nemirwi yakajairwa, shandisa mirwi yakaita seyakasarudzika (senge mirwi yeweji) kana weld kuvhara.
5. Foundation kuchera gomba uye drainage
○ Kuchera kwakaiswa musara (yega yega ≤2m), tsigiro sekuchera, nzvimbo yekutsigira yemukati ≤3m (rutsigiro rwekutanga ≤1m kubva pamusoro pegomba).
○ Drainage system: Kupatsanuka pakati pematsime ekuunganidza mvura i20~30m, uye pombi dzinonyura mumvura (kuyerera ≥10m³/h) dzinoshandiswa kupomba nguva dzose.
6. Backfill uye murwi kutorwa
Kudzosera kumashure kunoda kuumbwa zvakaenzanirana muzvikamu (compaction degree ≥ 90%) kudzivirira deformation yecofferdam nekuda kwekumanikidza unilateral.
Pile extraction sequence: bvisa kubva pakati kusvika kumativi maviri muzvikamu, uye jekiseni mvura kana jecha panguva imwe chete kuderedza kukanganiswa kwevhu.
II. Safety Management
1. Kudzora Njodzi
○ Anti-kupidigura: Chaiyo-nguva yekutarisisa kwecofferdam deformation (kumisa kuvaka uye kusimbisa kana mwero wekurerekera uri mukuru kupfuura 2%).
○ Anti-leakage: Mushure mekuturika, sungirira mesh mukati kupfapfaidza grout kana kuisa geotextile isingapinde mvura.
○ Anti-kunyura: Misa mirairi yekurinda (kureba ≥ 1.2m) uye lifebuoys/tambo pachikuva chekushanda.
2. Mhinduro kumamiriro anokosha ekushanda
○ Tidal pesvedzero: Mira basa maawa maviri mvura isati yanyanya uye tarisa kuvharwa kwecofferdam.
○ Yambiro yemvura zhinji: Fukidza gomba faundesheni uye tanga mabhegi emidziyo yekudhonza mvura (senge pombi dzine simba guru).
3. Kutarisira kwezvakatipoteredza
○ Mud sedimentation kurapwa: Misa tangi ine nhanho-nhatu yekunyungudutsa uye woibvisa mushure mekuzadzisa zviyero.
○ Kudzora ruzha: Deredza midziyo ine ruzha rwakanyanya panguva yekuvakwa kwehusiku (sekushandisa madhiraivha anotsiga mirwi panzvimbo).
Ⅲ. Key technical parameters referensi
IV. Matambudziko akajairika uye kurapwa
1. Kutsauka kwemurwi
Chikonzero: zvinhu zvakaoma muvhu kana kurongeka kwakashata.
Kurapa: Shandisa "kururamisa mirwi" kudzosera jekiseni kana kuzadza murwi wenzvimbo.
2. Lock leakage
Kurapa: Zadza mabhegi evhu kunze uye jekiseni polyurethane foaming agent mukati kuti uvhare.
3. Kusimudza gomba renheyo
Kudzivirira: Kurumidza kuvakwa kwendiro yepasi uye kuderedza nguva yekuratidzwa.
V. Pfupiso
Kuvakwa kwesimbi sheet murwi cofferdams inofanira kutarisa "yakagadzika (yakagadzikana chimiro), dense (chisimbiso pakati pemirwi), uye nekukurumidza (kukurumidza kuvhara)", uye dynamically kugadzirisa maitiro pamwe chete nemamiriro e geological. Kune nzvimbo dzakadzika dzemvura kana strata yakaoma, "rutsigiro kutanga uye kuchera" kana "cofferdam yakasanganiswa" (simbi yesimbi murwi + kongiri anti-seepage wall) chirongwa chinogona kugamuchirwa. Kuvakwa kwayo kune kusanganiswa kwesimba uye simba. Kuenzana kwakakwana pakati pemunhu nemasikirwo kunogona kuve nechokwadi kufambira mberi kwakanaka kwekuvaka uye kuderedza kukuvadzwa nekuparara kwezviwanikwa.
If you have any further questions or demands, please feel free to contact Ms. Wendy. wendy@jxhammer.com
whatsapp/wechat: + 86 183 5358 1176
Nguva yekutumira: Mar-10-2025