SDA Hollow Bar
Mar 27, 2026| SDA Hollow Bar (Tus kheej-Drilling Anchor Hollow Bar) yog ib qho tseem ceeb ntawm kev sib koom ua ke ntawm kev xyaum-grout- thauj tog rau nkoj siv hauv geotechnical engineering rau kev txhawb nqa txoj kab nqes, qhov, thiab lub hauv paus pits.
- Core txhais thiab cov qauv
Kev sib koom ua ke ua haujlwm: Nws ua haujlwm raws li ob qho tib si laum pas nrig (nrog rau kev siv cov khoom siv pov tseg ntawm lub hauv ntej kawg) thiab thauj tog rau nkoj; grouting yuav ua tau ib txhij thaum drilling los ntawm lub hollow kab noj hniav, tshem tawm qhov xav tau kev cais casing, ua tshwj xeeb tshaj yog haum rau xoob, yooj yim collapsible strata.
Khoom siv thiab cov qauv:Siab -lub zog seamless alloy steel, tag nrho threaded thoob plaws (hom R- hom xws li R25 / R32 / R38 / R51, T- hom xws li T64 / T76, thiab lwm yam); lub hollow bore xyuas kom slag tshem tawm thiab siab -siab grouting.
System Accessories:Laum me ntsis (av nplaum / xuab zeb / pob zeb tshwj xeeb), connector (extension), centering device, bearing phaj, txiv ntseej, grouting interface
Hom Specifications (Tswj siv)
| 型号 | 外径 (mm) | 常见壁厚 | 屈服强度 | 适用场景 |
|---|---|---|---|---|
| R25 | 25 | 4–5 | 450-500 MPa | Qhov chaw me me, qhov tob tob ntxiv |
| R32 | 32 | 5–6 | 500+ MPa | General tunnels, foundation pits |
| R38 | 38 | 6–7 | 500+ MPa | Soft Rock Layers, Landslide Control |
| R51 | 51 | 7–8 | 500+ MPa | Foundation Pit, Micropile |
- Installation Txheej txheem (Ib qho -Txoj Kev)
Sib dhos: Hollow pas nrig + txiab laum me ntsis + txuas laum me ntsis;
Rotary drilling los tsim qhov tob (hollow plua plav / dej tshem tawm);
Ib txhij retraction ntawm laum me ntsis / grouting (los yog tag nrho - txheej txheem siab grouting), sau qhov sib txawv ntawm tus pas nrig thiab phab ntsa borehole nrog grout;
Kev txhim kho ntawm cov kabmob phaj + txiv ntseej, anchoring ua tiav tom qab grout solidification.