Polit Bit
Application Range
Yakakodzera kuchera matsime emvura, geothermal matsime, mapfupi mircopiles yepakati mini-mhando grouting gomba rekuvaka, dhamu uye chiteshi chengarava.
Design Principles
Ita kuti casing iite nyore uye michina uye kushanda kuri nyore
Zvakanakisa Zvakanakira
Chimiro chakareruka, kushanda kuri nyore, hunhu hwakavimbika, maturusi ekuchera anodzoreredzwa, hupenyu hurefu hwebasa.
Maitiro Okushandisa:
1. Pakangotanga kuchera, reamer anovhura uye anowedzera gomba kutyaira casing shoe uye casing tube pasi.
2.Kana kuchera mu-over-burden kuumbwa kwaitwa, Tanga reverse circulation kuti uvhare reamer, uye wozodhonza gungano kuburikidza ne casing tube.
3.The casing tube inogona kusiiwa mugomba, kana inogona kubudiswa kunze nenzira yegrout sealing material.
4.Shandisa zvakajairwa kuchera maturusi kuti uboore uye uwane kusvika pahupamhi hunodiwa.
Zvinotsanangurwa
| A | B | C | D | E | F |
| Outer Dia.yeCasing Tube | Inner Dia.yeCasing Tube | Reamed Dia. | Min.Inner Dia.yeCasing Shoe | Hammer Type | Drill Pipes |
| mm | mm | mm | mm | mm | |
| 108 | 93-99 | 118 | 86 | TDS79 | 76 |
| 114 | 101-103 | 127 | 91 | R56,T38,TDS79 | 76 |
| 127 | 114-116 | 136 | 101 | TDS79 | 76 |
| 140 | 124-127 | 152 | 117 | TDS98 | 76 |
| 146 | 127-132 | 154 | 117 | TDS98 | 76 |
| 168 | 149-155 | 184 | 140 | TDS122 | 76,89 |
| 178 | 159-165 | 194 | 150 | TDS122 | 76,89 |
| 193 | 173-180 | 206 | 166 | TDS139 | 89,114 |
| 219 | 199-206 | 234 | 193 | TDS139,TDS180 | 89,114 |
| 245 | 224-231 | 260 | 210 | TDS180,TDS220 | 114 |
| 273 | 251-257 | 300 | 241 | TDS180 | 114,127 |
Kushandisa:
1. Mukusagadzikana kwedombo kuumbwa, iyo casing inofanirwa kutevera.
2. Kazhinji mumvura kuchera matsime, nokuda kwegomba guru rinofinha.
3. Kuchera kudzika kuri nani kusingasviki 40 metres kudzora gomba zvakanaka.
4. Match kusvika 6" sando uye 194mm casing chubhu.
5. Air pressure ndeye 20 Bar uye air volumn i500 cfm.
6. Zvishandiso zvinotorwa kuti zvishandiswe mumakomba anotevera.
