Ukufakwa kweSelf-Drilling Anchor kubonisa indlela eqeqeshiwe yokuqinisa umhlabathi nokuzinza ngaphakathi komkhakha wezeMidlalo yeGeotechnical kanye nezinsiza zokwakha ezijulile. Le ndlela ifaka phakathi ukudonsa nokufaka igesi eyisikhala esihambisana nezinto ezicuthelekileyo zomhlabathi nezinsiza zeqaqa njengoba kukhishwa igesi, kudala uxhumano olujulile phakathi kwemiphakathi engazinzile nomhlabathi osezingeni eliphezulu. AmaSelf-Drilling Anchors awusizo kakhulu ezimweni zomhlabathi eziyinkimbinkimbi lapho izindlela zokuhlanganisa noma zokufaka igesi ezijwayelekile zikhombisa ukungasebenzi kahle. Ngokuhlukile kumaphoyinti ajwayelekile adinga holes eziqondile, amaSDA ahlanganisa izinqubo zokudonsa nokufaka kumsebenzi owodwa, kusho ukuthi isikhathi sokufaka nezege lishintsha kakhulu futhi kwanda ukuphepha kwesakhiwo ezimweni eziguquguqukayo zezepolitiki. Inqubo yokufaka idinga imishini ethize efaka phakathi imishini yokudonsa ethinta kakhulu efakwe nezinhlelo zokudonsa zokushaya, ama-units okufaka igesi, kanye nezinsiza zokufaka ama-rod we-anchor. Umdonsi we-drill uthuthuka ngaphakathi kwe-anchor head, ubhujiswe umhlabathi, izinto eziqine, nezinsiza zeqaqa eziqinile, kuyilapho ubuchwepheshe be-hollow-stem buvumela ukufakwa kwegesi ngesikhathi sokuhoxa noma ezikhathini ezithile. Abasebenzi bemishini kumele baqaphe ngokuqinile imigomo yokudonsa kuhlanganisa isivinini sokujikeleza, ukuhamba kokushaya, ingcindezi yokuhamba, kanye nengcindezi ye-gas ukuze kuqinisekiswe ukwakheka okuhle kwe-borehole nokwakhiwa kwe-gas. Izinhlelo zeSelf-Drilling Anchor zithunyelwa ezimweni ezahlukene zomhlaba zisuka kwi-clay ethambile, i-sandy loam, nomhlaba weqaqa ophithizelayo, okwenza zibe nesimo esihle kumaphrojekthi we-geotechnical abiza ukuqinisekiswa komhlaba okunembile kumaphrofayela omhlaba ahlukahlukene. Izicelo zokufakwa kweSelf-Drilling Anchor zifaka phakathi ibanga elibanzi lemisebenzi yokwakha izisekelo kanye nezinhlelo zezakhiwo zomphakathi. Ukuchithwa kwe-slope kusala kube yisicelo esiyinhloko, ikakhulukazi emsebenzini wokuqinisa izinhlelo zezokuthutha ezinjengezokuhamba kwebhasi kanye nezokuhamba ngezikharikhadi, ukusiza ekugwemeni izindunduma, kanye nezinhlelo zokuthuthukiswa kweholo lapho ukugcina ukuqiniswa kwe-slope kubalulekile. Ukusekela okuphezulu kokuthola izikhala zokwakha izindawo zangaphansi, izakhiwo zokupaka eziphansi, nezinhlelo ze-metro tunnel zivame ukufaka izinhlelo ze-SDA ukuhlinzeka ngesezondlo sokuxhasa nokuvimbela ukuwa komhlaba. Imisebenzi yokumba isebenzisa amaSelf-Drilling Anchors ukuze kuqinisekiswe ukuvikelwa kwezindlela ezingekho emhlabeni, kuyilapho izinhlelo ze-hydroelectric kanye nezinsiza zamanzi zisebenzisa ama-anchors ukuze kuqinisekiswe ukuzinza kwedamu nolwazi lokusiza izakhiwo ezisemhlabeni. Le ndlela ibaluleke kakhulu eduze kwezinsiza ezikhona lapho ukuhamba okuphansi nezithiyo zokushaya zenza imishini yokuhlola ejwayelekile ingasebenzi kahle. AmaSelf-Drilling Anchors anikela ithuba eliphezulu lokudlulisa loads uma kuqhathaniswa nama-anchors ajwayelekile ngenxa yokuphakama kokubamba kwawo nobudlelwano obuseduze nomhlaba nendawo yeqaqa, kuqinisekisa ukuzinza kwesakhiwo okungapheli kanye nokuhlala isikhathi eside ngaphansi kwesimo sokushayisa okukhona noma okuphindaphindayo okujwayelekile emisebenzini yokwakha ukuze kuqinise umhlaba.
Ukufakwa kwe-Self-Drilling Anchor (SDA) kumelana nezindlela ezikhethekile ezibalulekile ngaphakathi komkhakha we-micropiling kanye nokuzinza komhlaba ekwakhiweni kweziqalo ezijulile. Izinsiza zokudonsa ze-SDA zenzelwe ukudonsa izimbobo ngesikhathi esifanayo nokufaka ama-anchora aphakeme noma akhethwayo emsebenzini owodwa oqhubekayo, kusho ukuthi awukho udinga izigaba ezihlukene zokudonsa nokukhipha ama-casing. Le ndlela entsha ihlanganisa ukuhlinzekwa, i-grouting, kanye nezindlela zokubopha zibe yindlela enye ehlangene, okwenza kube lula kakhulu ezinhlelweni ezinzima ze-geotechnical lapho izindlela zokubopha ezivamile zikhombisa ukunweba isikhathi noma zingafaneleki. Le teknoloji ibalulekile kumaphrojekthi adinga ukuqina komhlaba ngokushesha, ikakhulukazi ezimweni lapho ukuzinza kwezimbozo kungagcinwa ngaphandle kokufakwa kwama-anchor ngesikhathi esisodwa. Izigaba zokudonsa ze-SDA zisebenzisa izinhlelo zokudonsa ezineholo ezithumele i-grout ngqo nge-string yokudonsa njengoba i-anchor iqhubekela phambili emhlabeni. Izinsiza zokudonsa zisebenzisa imishini yokuzungezisa ephezulu noma yokushaya ukuze zingeze ezihlahleni ezahlukahlukene zomhlaba nezinto eziwukuhlola, kusuka kumaseli soft and silts kuye kwezikhephe eziqinile, okwenza kube lula ngezimo ezahlukene ze-geological. Umfutho we-grouting kanye nokuthuthukiswa kokubopha kusebenza ngokucophelela ukuze kuqinisekiswe ukudluliselwa okufanele komthwalo phakathi kwe-element ye-anchor kanye nomhlaba noma inhlaka yokwakha okukhona. Abatekinoloji bakhetha usayizi ofanele bezinhlangothi, izimfuneko ze-grout, nezindonga zokufaka ngokusekelwe emiphumeleni yokuhlolwa komhlaba kanye nezidingo zomthwalo wokwakha, lapho izicelo ezivamile zifaka ukufakwa kwama-anchor ngaphakathi kwezingqimba ezihlala phakathi kwezinyathelo eziningi zamamitha ukuya phezulu kuka-50 meters ezimweni eziyinselele. Ukukhetha imishini yokusebenza ku-SDA kuxhomekeka kakhulu ezimweni zezwe, izidingo zokukwazi kwe-anchor, kanye nezikhala zokufinyelela kumaphrojekthi. Izinsiza ezincane ezisendaweni ezizenzakalelayo noma ezikwi-chassis ye-crawler ziphonsa izinzuzo ezindaweni zedolobha ezinqamulekile kanye nezindawo ezishubile, kuyilapho izinhlelo ezinkulu ezibekwe kumatruck noma emabhodweni zinikeza umjikelezo ophakeme wokudonsa obalulekile ku-dank rock anchoring. Izinsiza ze-SDA ezihamba phambili zihlanganisa imishini yokubuka umfutho, ukukala i-torque, kanye nezinqubo zokuhlinzeka i-grout ukuze kuqinisekiswe ukulawula kwekhwalithi nokuhlinzeka ngemibhalo ephelele ye-paramitha yokufinyelela ukuqinisekiswa kwezinhlaka zokwakhiwa. Izindlela zokudonsa ze-SDA zixazulula izinselelo ezahlukahlukene zokwakha okuhlanganisa ukuqiniswa kwezinyathelo zokuvikela izakhiwo, ukwesekwa kwe-excavation ejulile ezisekelweni zedolobha, ukulungiswa kwezidubedube, ukuqiniswa kwezingxenye zangaphansi emabhizinisini nasezindleleni, kanye nezinhlinzeko ezihlala njalo zezindonga zokugcina nezakhiwo zezimvula. Le ndlela ibalulekile kakhulu ezimweni ezihlanganisa izimo zomhlaba ezinzima nezinhlelo zomsebenzi eziqondile, njengoba ukususa izigaba ezihlukene zokukhipha ama-casing kunciphisa kakhulu isikhathi sokufaka nemali ehlobene nephrojekthi. Abaklami be-geotechnical bayathanda i-SDA yokudonsa emakhasini edinga ukwethembeka okuphezulu kumaphrofayela omhlaba ahlukeneyo, izimo ze-hydrogeological eziyinselele, kanye namaphrojekthi lapho ukugcina ukujula kwezimbozo ngesikhathi sokufaka kubalulekile kumphumela wezakhiwo kanye nokuphila isikhathi eside kwezinhlelo zeziqalo.
Izikhungo zokufaka ama-anchors azitholelayo ziveza indlela ethuthukisiwe yokusimama komhlaba nokweseka izisekelo ezijulile, zihlanganisa imisebenzi yokubhobhoza nokuqinisa zibe inqubo eyodwa. Lezi zinhlelo zakhelwe ngokukhethekile emaphrojekthini adinga amandla okuthwala umthwalo ngokushesha ezimweni ezinzima ze-geotechnical lapho izinqubo zokubhobhoza ezijwayelekile kanye nokuhlala kwe-grouting zingasebenzi kahle noma zingekho emkhakheni. Ama-anchor azitholelayo (ama-SDA) asebenza ngokuhamba phambili kwe-borehole ngasikhathi sinye nokufaka i-anchor, kukhishwa ukulibaziseka okuhlobene nezindlela ezivamile. Le ndlela ehlanganisiwe yehlisa kakhulu isikhathi sokufaka, inciphisa ukuphazamiseka kwemvelo, futhi iqinisekisa ukuqina kwe-anchor okuqhubekayo kuyo yonke ububanzi bokwenza. Sesha le ndlela yokuthola izikhungo efaka i-hollow drill bit eneziteshi ze-grout ezihlanganisiwe, ivumela ukuhlala okuqhubekayo noma okuhleliwe lapho i-anchor ihamba ngaphakathi komhlaba noma ezitini, kwakha ubuhlobo obuphakeme phakathi kwe-anchor nomhlaba ongakwazi. Ukufakwa kwama-systems ama-anchors azitholelayo kudinga imishini ekhethekile kufaka phakathi ama-percussion noma ama-rotary-percussion drilling units akwazi ukuhlinzeka ngokuqondile torque nokuphakamisa ngenkathi kugcinwa ukunemba kwe-verticality. Imishini kufanele ikwazi ukuhlinzeka ngezinhlobo ezahlukene zama-anchors—kusukela kumabha aqinile anama-drill bits ahlanganisiwe kuya kuma-hollow hollow-bar anchors—futhi ihlanganise izinhlelo ze-grouting eziletha ama-volumu anembile we-cement noma i-resin grout ngaphansi kwengcindezi elawulwayo. Ukusebenza kokubhobhoza kuqhubeka ngezinhlobo ezahlukene zomhlaba, kusukela ezindaweni ezihlanganisiwe nezinkanyezi ezikhanyayo kuya emathunzini aqinile, kanti ukuhogela kwenzeka ngasikhathi sinye noma ngokushesha emva kokuhamba kwe-holes. Abakhi basebenzisa izindlela zokubhobhoza ezihlanganisiwe ezihlanganisa ukujikeleza nomphumela ophakeme, kuphazamisa izakhi zomhlabathi ezihlukene ngenkathi kugcinwa ukujula kwe-holes. Inqubo yokubophela itholela ukuncintisana okuyisigaxa phakathi komzimba we-grout nokwakhiwa komhlaba, ngokuthola okukhulu kokubophela kwe-mechanical lapho izinto ezibhalwe noma ezandisiwe ziqhuba ezindaweni ezizungezile. Izinhlelo zokufaka ama-anchors azitholelayo zikhula ezinhlelweni ezihlanganisa ukusimama kokuphakama, ukwesekwa kwemva kokugcina, izinhlelo zokuxhoma ezithulelekile, ukujula kwe-sakha, nokuqinisekisa ukujula ukuze kuhlangabezane nezimo ezahlukene ze-geotechnical. Lezi zinhlelo zitholakala kahle ezimweni ezinomphumela ongenamsoco noma wezemilo lapho ukufakwa kwe-anchor okujwayelekile kufuna ukususa ukuvikeleka kwe-holes, ezindaweni ezincane zasemadolobheni lapho umsindo nokuhamba kufanele kwehliswe, nasezimo zasemanzini noma ze-alluvial lapho ukuhamba kwamanzi ngaphakathi kuvika ukujula kwe-borehole. Le teknoloji ivumela ububanzi obungajulile kuya kwenani eliphakathi, ngokuvamile kusukela kumamitha angu-5 kuya kwangu-40, ngezinto eziyodwa noma eziningi zama-anchor ezihlelwe ezifakazela ngezimo zokwakha nezingqimba zomhlaba. Ama-anchor azitholelayo ahamba kahle ezimfundisweni zomhlaba ezinama-granular soils, silts, clays, izinkanyezi ezishaywe, kanye nefractured bedrock, ahlinzeka ngempumelelo engcono lapho ama-anchor ajwayelekile e-grouted edlula ukuwa kwe-borehole wall noma ukuwashwa kwe-grout. Lezi zinhlelo zinikela ngamandla okuthwala umthwalo ngokushesha uma kufikumuka ukufakwa, kuvumela ukuhamba phambili kwephrojekthi ngokushesha nokuqedela izinqubo zokwakha ezihamba phambili. Abakhi bathola izinzuzo zokunciphisa izidingo zokuhamba, izindleko ze-grouting eziphansi uma ziqhathaniswa nezinhlelo zokufaka ubukhulu, kanye nemiphumela eqondile yokuhlola umthwalo we-anchor ngokusebenzisa izinqubo zokuhlola ze-hydraulic.
Ukuqedwa kokufaka i-Self-Drilling Anchor (SDA) kuyindlela yokwakha ethile kwezobunjiniyela bezinhlaka ezibucayi enezidingo ezinkulu emisebenzini yokwakha ezisekelwa phansi, ukuvuselelwa kwemigqa, nezicelo zokuphakanyiswa komhlaba. Izinsiza zokufaka igruout zezigaba ze-SDA zidlala indima ebalulekile ekuqinisekiseni izixazululo zokuxhumanisa ezihlala njalo ezihlanganisa umhlaba noma izindonga ezimangalisayo ezihambisana nezitezi ezinqanda, zigweme ukungaphumeleli kwezakhiwo, ukuhamba kwesisekelo, nokulimala kwesakhiwo okuhlobene nokuhlanza. Le ntuthuko ifaka inqubo ephelele yokufaka igruout ngesikhathi sokuhamba kwe-SDA, lapho izinhlelo zokufaka igruout ngok pressure ephezulu zifaka igruout ngesikhathi esifanayo nezinyathelo zokubhola, zakha indlela yokuphakanyiswa eyodwa ehlanganisa ithuluzi le-anchor, umzimba wegrout, nomhlaba osekelayo kungene ngokwakha. Indlela yokufaka igruout ye-SDA ibandakanya izindlela zokufaka igruout eziqhubekayo noma ezihambekayo ezilungiswe kumhlaba nezimo zezimila ezitholwa ngesikhathi sokuhamba kokubhola. Izinsiza zokufaka igruout ze-SDA kumele zenze umoya ophethwe kahle nokuhamba ukuze kuqinisekiswe ukuhleleka okuphelele kwensika yegrout ngaphakathi kweziqu, kungaba emhlabathini wezinsila, emnyangweni ophakanyisiwe, emadwaleni alimele noma emhlabeni oyinqaba. Izinsiza ezivamile ezisetshenziswa zifaka amaphampu anokuphakama okuphakeme, amaphampu okucindezela, kanye nezinhlelo zokufaka igruout zenzileyo ezisekela amamoleku aphezulu edinga ukukalwa okwenziwe ngezinsuku ezinzima zokuqina komgqomo nezithako ezipezulu zokudluliselwa komthwalo ophezulu. Izikhungo zokuhlanganisa neziteshi ze-flocculant ziqinisekisa ukujula okulinganayo kwegrout, kanti iziteshi zokufaka igruout nezinhlelo zamaphampu ziqinisekisa ukuhamba okungaguquki kwenye yeziqu zokuqonda, zifaka ubuchwepheshe obuhlobene ne-pressure namavolumu adingekayo ukuze ukwakhiwa kwe-SDA kuzungeze imikhakha yokuhlala engama-mitha angama-50 ngaphansi komhlaba. Izicelo zokufaka igruout ye-SDA zigcwele ezinkundleni ezihlukahlukene zokwakha lapho ukubaluleka kokuzinza kwezigodi nokuphakanyiswa komhlaba okuhlala njalo kubalulekile. Ekwakheni izinqaba nasekuqedeni izinkinga zokuqala, izinzwa ze-SDA ezinezinsiza zokufaka igruout eziphezulu zigwema ukuhamba kwangaphakathi nokwakha izikhala ezibhekelelwe isikhathi eside semishini yokwakhiwa. Imisebenzi yokumba kanye nezinsizakalo eziphansi zasezindaweni zisebenzisa ukufaka igruout ye-SDA ukuze kuseke izitobhi, kuqede ukudala, futhi kuvikela ukuvaleka kumhlanga wezindonga ezilula. Ubunjiniyela bezinhlaka zezakhiwo eziphakeme, iziqu, noshintsho olubaluleke kakhulu luhlala lusebenzisa izinhlelo ze-SDA ukuze kuqinisekiswe izisekelo ezindaweni eziphakeme nokunikeza ukuzinza okuhambisanayo ezimeni ezihlukahlukene zomhlabathi. Ukuqedela izinkinga zamagquma, ukufaka izindonga ezibambekayo, nezinsiza zokugqugquzela umhlaba zidinga izinsiza zokufaka igruout ezithembekile ukuze kutholakale umphumela wokuthuthuka komthwalo nokuhlala kwesikhathi eside okudingekayo kwezixazululo eziqhubekayo. Inqubo yokufaka igruout okufanele ihambisane nezimo zomhlaba eziye zatholwa kuhlanganisa nezinsila ezihamba kalula ezidinga ukuhamba okuphakeme, izinsila ezingaphumeleli ezinciphisa ukwamukela kwesisu, nezindonga eziphukile ezidinga ukumiswa okuqukethe igruout nokusebenza okuhle. Izpecifications zezinsiza zokufaka igruout ze-SDA zihlala zihlelelwa izici ezithile zephrojekthi ezihlanganisa umthwalo wokwakha ama-anchor, ubude nokuma kwezithupha, ubude bezikhathi zokufaka, nezici zokuwina komhlaba. Abakhi be-SDA abaqeqeshiwe bakhetha imishini yokubhola ethuthumayo efakwe ezikhungweni zokufaka igruout ezikhethekile, izinhlelo zokulandelela pressure, kanye nemizamo yokuthola idatha ngesikhathi esifanele ukuhlinzeka ngendlela yokuhlola izinga lokwakha nezidingo ze-geotechnical design specifications. Ukudluliswa kokufaka igruout ye-SDA ukuphumelelayo kuqinisekisa ukusebenza okwethembekile kwe-anchor, impilo yesevisi ebanzi, kanye nokuhambisana nezinqamuleli zendlela yokwakha nezindinganiso ze-geotechnical engineering ezibhekele impilo yokwakha ehamba phansi nokusebenza kwezindawo zokwakha kulo mkhakha.
Get the latest equipment listings, industry news, and market insights.