Ihe owuwu ígwè mpempe akwụkwọ cofferdam bụ ọrụ a na-arụ na mmiri ma ọ bụ n'akụkụ mmiri, na-achọ ịmepụta ebe akọrọ na nchekwa maka ihe owuwu. Ịrụ ụlọ na-adịghị mma ma ọ bụ enweghị ike ịmata nke ọma mmetụta gburugburu ebe obibi dị ka ịdị mma ala, mmiri na-erugharị, nrụgide miri emi, wdg nke osimiri, ọdọ na oké osimiri n'oge a na-ewu ụlọ ga-ebute ihe mberede nchekwa ụlọ.
Isi usoro na nchekwa nchekwa isi ihe nrụnye mpempe akwụkwọ nchara cofferdam:
I. Usoro ihe owuwu
1. Nkwadebe ihe owuwu
○ Ọgwụgwọ saịtị
Ekwesịrị ịkwakọba ihe owuwu ihe owuwu a na-ejuputa oyi akwa site na oyi akwa (ọkpụrụkpụ oyi akwa a na-atụ aro bụ ≤30cm) iji hụ na ikike ibu na-emezu ihe achọrọ maka ịrụ ọrụ igwe.
Mkpọda nke olulu mmiri ahụ kwesịrị ịbụ ≥1%, a ga-edobekwa tankị sedimentation iji gbochie mgbochi silt.
○ Nkwadebe ihe onwunwe
Nhọrọ nke mpempe akwụkwọ nchara: Họrọ ụdị ikpo dị ka akụkọ geological si dị (dị ka ụdị Larsen IV maka ala dị nro na ụdị U maka akwa gravel).
Lelee iguzosi ike n'ezi ihe nke mkpọchi: Tinye bọta ma ọ bụ ihe mkpuchi tupu oge eruo iji gbochie ntapu.
2. Ntụle na nhazi
Jiri ngụkọta ọdụ maka ịtọ n'ọnọdụ ziri ezi, tọọ ikpo njikwa njikwa kwa 10m, wee lelee axis imewe na mgbago elu (njehie enwere ike ≤5cm).
3. Ntuziaka etiti echichi
Oghere dị n'etiti ogwe ntụzịaka nchara okpukpu abụọ bụ 1 ~ 2cm buru ibu karịa obosara nke ikpo akwụkwọ nchara iji hụ na ngbanwe nke kwụ ọtọ bụ ihe na-erughị 1%.
Ọ dị mkpa ka edochie ogwe ntuziaka site na ịgbado ọkụ nchara ma ọ bụ bolting ka ịzena mbugharị n'oge ikpo mkpọtụ.
4. Ntinye mpempe akwụkwọ nchara
○ Usoro ịnya ụgbọ ala: Malite site na ikpo nkuku, mechie oghere dị n'akụkụ ogologo ruo n'etiti, ma ọ bụ jiri ihe owuwu otu "screen-style" (10 ~ 20 piles kwa otu).
○ Njikwa teknụzụ:
Ntugharị kwụ ọtọ nke ikpo nke mbụ bụ ≤0.5%, a na-edozikwa ahụ nke na-esote site na "ịkwọ ụgbọ ala tọọ".
○ Ọnụọgụ ịnya ụgbọ ala: ≤1m/min n'ime ala dị nro, a na-achọkwa ụgbọ elu mmiri nwere nrụgide iji nyere aka imikpu na oyi akwa ala siri ike.
○ Ọgwụgwọ mmechi: Ọ bụrụ na enweghị ike itinye oghere nke fọdụrụ na ikpo ọkọlọtọ, jiri ikpo pụrụ iche (dị ka ikpo wedge) ma ọ bụ weld mechie.
5. Ngwuputa olulu na mmiri mmiri
○ Ngwuputa ihe nkedo (okpukpu ọ bụla ≤2m), nkwado dị ka ihe gwupụtara, oghere nkwado ime ≤3m (nkwado mbụ bụ ≤1m site n'elu olulu).
○ Sistemụ igbapu: Oghere dị n'etiti olulu mmiri na-anakọta bụ 20 ~ 30m, na nfuli submersible (ọnụego eruba ≥10m³ / h) na-eji maka mgbapụta na-aga n'ihu.
6. Backfill na ikpo mmịpụta
Ekwesịrị ijikọ njupụta azụ azụ n'ụdị dị n'ígwé (nrịgo compaction ≥ 90%) iji zere nrụrụ nke cofferdam n'ihi nrụgide otu akụkụ.
Usoro mmịpụta ikpo: wepụ si n'etiti gaa n'akụkụ abụọ na nkeji oge, gbanye mmiri ma ọ bụ ájá n'otu oge iji belata ọgba aghara ala.
II. Njikwa nchekwa
1. Njikwa ihe ize ndụ
○ Mgbochi ntugharị: Nleba anya n'ezie maka nrụrụ cofferdam (kwụsịtụ iwu ma mee ka ọ dịkwuo elu mgbe ọnụego ọchịchọ karịrị 2%).
○ Mgbochi ntapu: Mgbe ikpokọtachara, kpọgidere ntupu n'ime ka ị fesa ahịhịa ma ọ bụ dọba ihe geotextile na-adịghị mmiri.
○ Mgbochi mmiri ozuzo: Tọọ ụzọ nchebe (ịdị elu ≥ 1.2m) na ndụ ndụ / eriri n'elu ikpo okwu na-arụ ọrụ.
2. Nzaghachi na ọnọdụ ọrụ pụrụ iche
○ Mmetụta mmiri: Kwụsị ọrụ awa 2 tupu oke oke mmiri wee lelee akara nke cofferdam.
○ ịdọ aka ná ntị siri ike nke mmiri ozuzo: Kpuchie olulu ntọala tupu oge eruo wee malite akụrụngwa mgbapụta nkwado ndabere (dị ka nfuli dị elu).
3. Nlekọta gburugburu ebe obibi
○ Ọgwụgwọ ịgba mmiri: Wụpụta tankị nke ọkwa atọ ma hapụ ya ka emechara ụkpụrụ.
○ Njikwa mkpọtụ: kpachie akụrụngwa na-eme mkpọtụ n'oge a na-arụ ọrụ abalị (dị ka iji ndị ọkwọ ụgbọ ala static static pile).
Ⅲ. Ntụtụ aka n'ihe gbasara teknụzụ isi
IV. Nsogbu na ọgwụgwọ nkịtị
1. Okpokoro ndiiche
Ihe kpatara: ihe siri ike na oyi akwa ala ma ọ bụ usoro na-ezighị ezi nke ikpokọta.
Ọgwụgwọ: Jiri “okpo mgbazi” tụgharịa ntụtụ ma ọ bụ ndochi mpaghara.
2. Mkpọchi ntapu
Ọgwụgwọ: Jupụta akpa ụrọ n'èzí wee gbanye onye na-emepụta ụfụfụ polyurethane n'ime iji mechie.
3. Ntọala olulu ebuli elu
Mgbochi: Mee ngwa ngwa owuwu nke efere ala ma belata oge ikpughe.
V. Nchịkọta
Ihe owuwu nke mpempe akwụkwọ nchara cofferdams kwesịrị ilekwasị anya na "ụkpụrụ kwụsiri ike (ụkpụrụ kwụsiri ike), oke (akara n'etiti ikpo), na ngwa ngwa (mmechi ngwa ngwa)”, ma gbanwee usoro ahụ n'ụzọ siri ike yana ọnọdụ ọnọdụ ala. Maka mpaghara mmiri miri emi ma ọ bụ ihe mgbagwoju anya, enwere ike ịnakwere atụmatụ "nkwado mbụ wee gwuo" ma ọ bụ "cofferdam jikọtara ọnụ" (ígwè mpempe akwụkwọ ígwè + ihe mgbochi-seepage) atụmatụ. Ihe owuwu ya nwere nchikota ike na ike. Ntụle zuru oke n'etiti mmadụ na okike nwere ike hụ na ọganihu dị mma nke ihe owuwu na-ebelata mmebi na mmebi nke ihe ndị sitere n'okike.
If you have any further questions or demands, please feel free to contact Ms. Wendy. wendy@jxhammer.com
whatsapp/wechat: + 86 183 5358 1176
Oge nzipu: Mar-10-2025