Dulmar guud ee T76 Birta Dahsoon oo Buuxa oo Is-Doodista Dhagaxa Bolt
Barroosinnada is- qodida waa nooc gaar ah oo barroosinnada usha ah.Barroosinka is-qodista wuxuu ka kooban yahay birta layliga ah, birta bannaan ee dhexroorka bannaanka iyo gudaha iyo isku-xidhka lawska.Jidhka barroosinku wuxuu ka samaysan yahay tuubo bir ah oo bannaan oo leh dun wareegsan oo dibadda ah.Tuubada birtu waxay leedahay birta layliga ee hal daraf iyo lowska u dhigma oo leh saxan dhamaadka birta ah.Barroosinnada is-qodidda waxa loo isticmaalaa hab bir godlan (ul) ay ku leedahay birta layliga ah ee u dhiganta dusheeda halkii ay ka ahaan lahayd birta duugga ah.
Tilmaamaha Ulaha Barroosinka Is-Doodida
| R25N | R32L | R32N | R32/18.5 | R32S | R32SS | R38N | R38/19 | R51L | R51N | T76N | T76S | |
| Dhexroor ka baxsan (mm) | 25 | 32 | 32 | 32 | 32 | 32 | 38 | 38 | 51 | 51 | 76 | 76 |
| Dhexroorka gudaha(mm) | 14 | 22 | 21 | 18.5 | 17 | 15.5 | 21 | 19 | 36 | 33 | 52 | 45 |
| Dhexroorka dibadda, wax ku ool ah (mm) | 22.5 | 29.1 | 29.1 | 29.1 | 29.1 | 29.1 | 35.7 | 35.7 | 47.8 | 47.8 | 71 | 71 |
| Awoodda culeyska ugu dambeeya (kN) | 200 | 260 | 280 | 280 | 360 | 405 | 500 | 500 | 550 | 800 | 1600 | 1900 |
| Awoodda wax-soo-saarka (kN) | 150 | 200 | 230 | 230 | 280 | 350 | 400 | 400 | 450 | 630 | 1200 | 1500 |
| Xoog xajin, Rm (N/mm2) | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 |
| Xoogga wax-soo-saarka, Rp0, 2(N/mm2) | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 |
| Miisaanka (kg/m) | 2.3 | 2.8 | 2.9 | 3.4 | 3.4 | 3.6 | 4.8 | 5.5 | 6.0 | 7.6 | 16.5 | 19.0 |
Faa'iidada iyo adeegsiga Ulaha Barroosinka ee Self Drilling
Shaqadda usha barroosinka ah ee daloolsan ee daloolsan ayaa soo baxaysa, sidaas darteed waxaa sidoo kale loo yaqaannaa tuubada grouting.Waxaa lagu wareejin karaa qorshaha guud si loo gaaro cadaadiska aasaasiga ah.Cadaadiska hoostiisa, qulqulka gudaha ayaa ka soo baxa, taas oo aan saameyn go'an ku yeelanayn lafteeda, laakiin sidoo kale waxay gashaa godka barroosinka marka qulqulka qulqulaya, isagoo door ka ciyaaraya xoojinta dhagaxa ku wareegsan.Waxay leedahay faa'iidooyin u gaar ah xagga codsiga iyo qorsheynta, sidaas darteed waxay muujin kartaa faa'iidooyinkeeda marka la eego codsiga:
1. Waxaa si sax ah hoos saamaynta this in saamaynta taageerada degdegga ah bilowga ah lagu gaari karaa iyo qallafsanaanta dhagaxa ku hareeraysan si fiican loo xakameeyo karaa in saamayn xasilloonida wanaagsan lagu gaari karo.
2. Waxay isticmaashaa hab madhan xagga qorsheynta, isku dhafka ulaha barroosinka iyo tuubooyinka grouting.Sida saxda ah waa qorshaynta noocaan ah oo leh faa'iidooyin waaweyn.Haddii ay tahay tuubooyin dhaqameed, waxay keeni kartaa khasaare sababtoo ah dib-u-soo-jiidashada, taas oo aan soo bandhigi doonin ifafaale noocaas ah.
3. Waxay si weyn u wanaajin kartaa tayada mashruuca, taas oo si sax ah sababtoo ah waxay gaari kartaa heer aad u weyn oo buuxa inta lagu jiro grouting, iyo si wadajir ah ula grouting, waxay gaari kartaa saamaynta grouting cadaadis.
4. Dhexdhexaadnimadeeda ayaa wanaagsan.Marka lagu daro qalabyada kale inta lagu jiro isticmaalka, waxay kordhisaa dhexdhexaadnimadeeda, taas oo u oggolaanaysa slurry inuu duubo dhammaan usha barroosinka ee bannaan.Waa si sax ah sababtaas awgeed miridhku ma soo muuqan doono inta lagu jiro isticmaalka oo si dhab ah u gaari karo isticmaalka muddada dheer.
5. Sidoo kale waa mid aad u habboon qalabka, taas oo sidoo kale aad muhiim u ah.Ilaa iyo inta ay ku habboon tahay qalabka, waxay soo gaabin kartaa deminta iyo waqtiga dhismaha.Si wada jir ah qalabka, looma baahna boolal dheeraad ah si loo buuxiyo shuruudaha looska iyo suufka qalabka.
