Ob txoj hauv kev los txhim kho cov kabmob muaj peev xwm ntawm cov pawg teb

Tam sim no, feem ntau siv cov txheej txheem los txhim kho cov kab ntsug ntsug ntawm ib pawg ntawm cov pawg grouted xws li txoj kev nthuav dav hauv qab thiab cov txheej txheem ntawm grouting tom qab drilling thiab grouting pawg.
Hauv qab Expansion Drill Bit Method
Nyob rau hauv tib lub stratum, qhov tsis kam ntawm pawg kawg yog proportional rau hauv qab ntawm pawg kawg. Nyob rau hauv qhov kev pom zoo tias txoj kab uas hla ntawm pawg lub cev tseem tsis hloov pauv, ua rau thaj tsam hauv qab ntawm pawg kawg tuaj yeem nce qhov kawg ntawm cov kabmob ntawm pawg. Yog li ntawd, nws yog ib txoj hauv kev zoo los txhim kho txoj kev muaj peev xwm ntawm txoj kab ntsug thiab kev tiv thaiv kom rub tawm ntawm ib pawg los ntawm kev nthuav dav qhov loj hauv qab ntawm pawg qhov los ntawm kev siv nthuav hauv qab drilling me ntsis los ua ib qho kev nthuav hauv qab pawg uas yog me me rau saum. thiab loj rau hauv qab.
Feem ntau ntawm cov rotary drilling rigs nyob rau hauv Nyiv yog nruab nrog cov roj yeeb nkab coil racks nyob rau hauv lub hwj chim lub taub hau muaj feem xyuam rau hauv qab kis me ntsis, thiab kev siv cov hauv qab kis pawg yuav txuag tau pob zeb los ntawm 50%, yog li 95% ntawm pawg qhov nyob rau hauv Nyiv yog. hauv qab kis pawg.
Txoj kev rov qab grouting
Txoj kev no ua rau cov slag zais kev phom sij nyob rau hauv qab ntawm pawg yuav tsum tau rooted, lub cev pawg yuav muaj zog, cov av nyob ib ncig ntawm pawg yuav compacted, thiab kev sib raug zoo ntawm pawg thiab cov av nyob ib ncig ntawm pawg yuav txhim kho, thiaj li yuav txhim kho. cov kabmob muaj peev xwm ntawm ib pawg, uas tuaj yeem txhim kho los ntawm 30-90% feem ntau.
Cov nyhuv tsim los ntawm cov txheej txheem tom qab lub siab slurry yog tias cov cement slurry ua ke nrog cov slag nyob rau hauv qab ntawm pawg los ua pob zeb, tshem tawm cov nyhuv ntawm slag nyob rau hauv qab ntawm pawg.
Cov cement slurry tau ntim nrog 'cov lus cuav' thiab 'qhuav slag' tsim los ntawm kev sib cais, uas txhim kho lub zog ntawm pob zeb ntawm cov pob zeb.
Kev kub siab grouting nyob rau hauv qab ntawm pawg ua rau cov av nyob rau hauv qab ntawm pawg tau compacted, thiab cov cement slurry nkag mus rau hauv cov av nyob rau hauv qab ntawm pawg los tsim ib lub cev muaj zog, uas txhim kho lub zog ntawm cov av nyob rau hauv qab. ntawm pawg, thiab yog li txhim kho cov kabmob muaj peev xwm ntawm pawg kawg ntawm pawg boring.
Kev ua haujlwm siab slurry tuaj yeem ua rau sab saum toj prestressing quab yuam nyob hauv qab ntawm pawg, uas yog qhov zoo rau qhov kawg bearing pawg.
Lub siab-siab pressurized slurry ntawm pawg sab muaj ib tug squeezing thiab compacting nyhuv ntawm cov av nyob ib ncig ntawm pawg, thiab nkag mus rau hauv cov av nyob ib ncig ntawm pawg, tsim xyoob-zoo li tus slurry npuas, uas muaj ib tug xyoob pawg nyhuv thiab txhim kho cov lateral resistance. ntawm pawg.
Tom qab drilling lub qhov, thaum muab lub tawb steel, preset lub raj xa dej, sau cov pob zeb ua ke, thiab grouting tom qab solidification. Ua ntej grouting, ua cov dej txhaj tshuaj kom paub meej tias qhov smoothness ntawm cov kav dej ua ntej grouting. Thawj pawg sab thiab tom qab ntawd pawg hauv qab, thawj pab pawg grouting, ces pab pawg grouting.