Magani da matakan rigakafin fashewar kankare a cikin ramin zubar da ruwa na tashar wutar lantarki
1.1 Bayyani na aikin zubar da ruwa na tashar ruwa ta Shuanghekou a cikin Kogin Mengjiang
Ramin korar ambaliyar ruwa na tashar samar da wutar lantarki ta Shuanghekou a cikin kogin Mengjiang na lardin Guizhou ya dauki siffar kofar birni.Dukan ramin yana da tsayin mita 528, kuma mashigin shiga da fita bene 536.65 da 494.2 m bi da bi.Daga cikin su, bayan ajiyar ruwa na farko na tashar ruwa na Shuanghekou, bayan binciken da aka yi a wurin, an gano cewa lokacin da ruwan da ke cikin wurin tafki ya kasance mafi girma fiye da hawan saman filogi na ramin ambaliya, ginin. haɗin gwiwa da simintin sanyi na ƙasan farantin mai tsayi mai tsayi ya haifar da zubar da ruwa, kuma adadin ruwan ya kasance tare da matakin ruwa a cikin wurin tafki.tashi da ci gaba da karuwa.Har ila yau, magudanar ruwa yana faruwa a gefen bangon simintin sanyi da gidajen gine-gine a cikin sashin ramin Longzhuang.Bayan bincike da bincike da ma'aikatan da abin ya shafa, an gano cewa, manyan abubuwan da ke haifar da zubar da ruwa a wadannan sassa sun kasance ne saboda rashin kyawun yanayin yanayin yanayin dutsen da ke cikin wadannan ramuka, rashin gamsuwa da magungunan gine-gine, da samar da gabobin sanyi a lokacin ramuka. tsarin zub da kankare, da rashin ƙarfi da kuma grouting na matosai na duxun.Jiya et al.Don wannan karshen, ma'aikatan da suka dace sun ba da shawarar hanyar da za a yi amfani da sinadarai a kan yankin da ke da kyau don hana shinge da kuma magance tsagewar.
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1.2 Maganin tsatsauran ramin da aka samu ambaliya ta tashar ruwa ta Shuanghekou a cikin kogin Mengjiang.
Dukkanin sassan da aka leka na ramin fitar da ruwa na tashar samar da wutar lantarki ta Luding, an yi su ne da siminti HFC40, kuma ana rarraba galibin fasalolin da gina madatsar ruwan da aka yi a tashar samar da wutar lantarki a nan.Bisa kididdigar da aka yi, an fi mayar da tsagewar a cikin 0+180 ~ 0+600 na dam.Babban wurin fashe shine bangon gefe tare da nisa na 1 ~ 7m daga farantin ƙasa, kuma yawancin nisa shine kusan 0.1 mm, musamman ga kowane ɗakin ajiya.Sashin tsakiya na rarraba shine mafi yawa.Daga cikin su, kusurwar da ke faruwa na tsagewa da kusurwar kwance ya kasance mafi girma ko daidai da 45. , siffar yana tsage kuma ba daidai ba ne, kuma tsagewar da ke haifar da zubar da ruwa yawanci yana da ƙananan ƙwayar ruwa, yayin da yawancin tsagewar. kawai suna bayyana jika akan farfajiyar haɗin gwiwa kuma alamun ruwa suna bayyana akan saman kankare, amma akwai wasu tsirarun alamomin tsinkewar ruwa.Da kyar babu wani alamar ruwa mai gudu.Ta hanyar lura da lokacin ci gaba na tsagewar, an san cewa tsagewar za ta bayyana lokacin da aka cire kayan aikin sa'o'i 24 bayan zubar da kankare a farkon mataki, sannan wadannan fasa za su kai ga kololuwar lokacin kimanin kwanaki 7 bayan cirewar. da formwork.Ba zai daina haɓakawa a hankali ba har sai l5-20 d bayan rushewa.
2. Magani da ingantaccen rigakafin fashewar kankare a cikin magudanar ruwa na tashoshin wutar lantarki
2.1 Hanyar grouting na sinadarai don rami mai zubewar tashar ruwa ta Shuanghekou
2.1.1 Gabatarwa, halaye da daidaita kayan
Abubuwan slurry na sinadarai shine PCI-CW babban haɓakar haɓakar haɓakar guduro epoxy.Kayan yana da ƙarfin haɗin kai, kuma za'a iya warkewa a cikin dakin da zafin jiki, tare da ƙananan raguwa bayan warkewa, kuma a lokaci guda, yana da halaye na ƙarfin injiniya mai ƙarfi da kuma tsayin daka na zafi, don haka yana da kyakkyawan tsayawar ruwa da leak- tasirin dakatarwa.Irin wannan kayan aikin grouting mai ƙarfafawa ana amfani dashi ko'ina wajen gyarawa da ƙarfafa ayyukan kiyaye ruwa.Bugu da ƙari, kayan kuma yana da fa'idodin tsari mai sauƙi, kyakkyawan aikin kare muhalli, kuma babu gurɓataccen yanayi.
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2.1.2 Matakan Gina
Da farko, nemi kabu da huda ramuka.Tsaftace tsagewar da aka samu a cikin magudanar ruwa da ruwa mai matsananciyar matsa lamba sannan a jujjuya saman tushe na kankare, da kuma bincika dalilin tsagewar da kuma alkiblar tsagewar.Kuma a yi amfani da hanyar haɗa ramin tsaga da ramin da ake son hakowa.Bayan kammala aikin hako ramin da aka karkata, ya zama dole a yi amfani da karfin iska da bindigar ruwa mai karfin gaske don duba ramin da tsagewa, da kuma kammala tattara bayanai na girman tsagewar.
Na biyu, ramukan zane, ramukan rufewa da suturar sutura.Har ila yau, yi amfani da iska mai ƙarfi don share ramin da za a gina, sannan a cire dattin da aka ajiye a kasan ramin da kuma bangon ramin, sannan a shigar da abin toshe ramin da alama a ramin bututun. .Gane grout da ramukan huci.Bayan an shirya ramukan grouting, yi amfani da PSI-130 mai sauri plugging wakili don rufe cavities, kuma yi amfani da siminti epoxy don ƙara ƙarfafa hatimin cavities.Bayan rufe buɗaɗɗen, wajibi ne a yanke wani rami mai faɗin 2cm mai faɗi da 2cm mai zurfi tare da jagorancin simintin simintin.Bayan tsaftace tsagi na chiseled da ruwan matsa lamba na baya, yi amfani da toshe mai sauri don rufe tsagi.
Har yanzu, bayan duba samun iska na bututun da aka binne, fara aikin grouting.A lokacin aikin grouting, an fara cika ramukan ƙididdiga masu ƙima, kuma an tsara adadin ramukan bisa ga tsawon ainihin aikin ginin.Lokacin grouting, ya zama dole don cikakken la'akari da yanayin grouting na ramukan da ke kusa.Da zarar ramukan da ke kusa da su suna da raguwa, duk ruwan da ke cikin ramukan yana buƙatar zubar da ruwa, sa'an nan kuma haɗa shi da bututun mai da kuma grouted.Bisa ga hanyar da ke sama, kowane rami yana grouted daga sama zuwa kasa da kasa zuwa sama.
Magani da matakan rigakafin fashewar kankare a cikin ramin zubar da ruwa na tashar wutar lantarki
A ƙarshe, grout yana ƙare ma'auni.Matsakaicin matsi na sinadarai grouting na kankare fasa a cikin magudanar ruwa shine madaidaicin ƙimar ƙira da aka bayar.Gabaɗaya magana, matsakaicin matsa lamba grouting yakamata ya zama ƙasa da ko daidai da 1.5 MPa.Ƙayyadaddun ƙarshen grouting yana dogara ne akan adadin allura da girman girman matsa lamba.Babban abin da ake buƙata shine bayan da matsa lamba ya kai matsakaicin, grouting ba zai ƙara shiga cikin rami a cikin 30mm ba.A wannan gaba, ana iya yin aikin ɗaurin bututu da aikin rufewa.
Dalilai da matakan jiyya na fashe-fashe a cikin rami na zubar da ruwa na tashar ruwa ta Luding
2.2.1 Nazari kan musabbabin rugujewar ambaliya ta tashar ruwa ta Luding
Na farko, albarkatun kasa suna da rashin daidaituwa da kwanciyar hankali.Abu na biyu, adadin siminti a cikin mahaɗin yana da girma, wanda ke haifar da siminti don haifar da zafi mai yawa na hydration.Abu na biyu, saboda yawan haɓakar haɓakar thermal na tarin dutse a cikin raƙuman ruwa, lokacin da yanayin zafi ya canza, haɗuwa da abubuwan da ake kira coagulating kayan za su watse.Abu na uku, HF kankare yana da manyan buƙatun fasahar gini, yana da wahala a iya ƙware a cikin tsarin gini, kuma sarrafa lokacin girgizawa da hanyar ba zai iya cika daidaitattun buƙatun ba.Bugu da kari, saboda ramin fitar da ruwa na tashar ruwa ta Luding ya shiga, ana samun kwararar iska mai karfi, wanda ke haifar da karancin zafin jiki a cikin ramin, wanda ke haifar da babban bambanci tsakanin siminti da muhallin waje.
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2.2.2 Ma'auni da matakan rigakafi don tsagewa a cikin rami mai fitar da ambaliya
(1) Domin rage samun iska a cikin rami da kuma kare yanayin zafi na simintin, don rage yawan zafin jiki tsakanin simintin da yanayin waje, za a iya saita firam ɗin lanƙwasa a hanyar fita daga cikin rami mai zube. kuma ana iya rataye labulen zane.
(2) Karkashin tsarin biyan bukatu mai karfi, sai a daidaita kason siminti, a rage yawan simintin gwargwadon iyawa, sannan a kara yawan tokar gardawa a lokaci guda, ta yadda za a yi amfani da shi. za'a iya rage zafin hydration na siminti, don rage zafin ciki da waje na siminti.bambancin yanayin zafi.
(3) Yi amfani da kwamfutar don sarrafa adadin ruwan da aka ƙara, ta yadda za a iya sarrafa ma'aunin ruwan siminti yayin da ake hada kankare.Ya kamata a lura cewa a lokacin haɗuwa, don rage yawan zafin jiki na kayan aiki mai mahimmanci, ya zama dole don ɗaukar ƙananan zafin jiki.Lokacin jigilar siminti a lokacin rani, yakamata a ɗauki matakan daidaita yanayin zafi da sanyaya don rage dumama simintin yadda yakamata yayin sufuri.
(4) Tsarin girgiza yana buƙatar kulawa sosai a cikin tsarin ginin, kuma ana ƙarfafa aikin rawar jiki ta hanyar amfani da sanduna masu rawar jiki masu sassauƙa tare da diamita na 100 mm da 70 mm.
(5) Tsananin sarrafa saurin simintin da ke shiga ɗakin ajiyar, ta yadda saurin hawansa bai kai ko daidai da 0.8 m/h.
(6) Tsawaita lokacin cire kayan aikin kankare zuwa sau 1 na asali, wato, daga sa'o'i 24 zuwa 48.
(7) Bayan tarwatsa aikin, aika ma'aikata na musamman don yin aikin gyaran feshi akan aikin kankare cikin lokaci.Ya kamata a kiyaye ruwan kulawa a 20 ℃ ko sama da ruwan dumi, kuma saman kankare ya kamata a kiyaye shi da m.
(8) Ana binne ma'aunin ma'aunin zafi da sanyio a cikin simintin siminti, ana lura da yanayin zafin da ke cikin simintin, kuma ana nazarin alaƙar da ke tsakanin simintin canjin yanayi da tsattsauran ƙirƙira yadda ya kamata.
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Ta hanyar yin nazari kan musabbabi da hanyoyin magance ambaliyar ruwa na tashar ruwa ta Shuanghekou da kuma magudanar ruwa na tashar ruwa ta Luding, an san cewa tsohon ya faru ne saboda rashin kyawun yanayin yanayin kasa, rashin gamsuwa ga gidajen gine-gine, gabobin sanyi da kogon duxun. a lokacin kankare zuba.A fasa a cikin rami sallamar ambaliya lalacewa ta hanyar matalauta toshe ƙarfafawa da grouting za a iya yadda ya kamata kashe ta sinadarai grouting tare da high-permeability modified epoxy guduro kayan;Ƙarshe na ƙarshe da ya haifar da matsanancin zafi na hydration na kankare, Ana iya magance Cracks kuma a hana shi yadda ya kamata ta hanyar rage yawan siminti da amfani da polycarboxylate superplasticizer da C9035 kankare kayan.
Lokacin aikawa: Janairu-17-2022
