工作步驟:
1.啟動鉆具,旋翼像四周打開,形成擴孔范圍,從而帶動管靴和跟管往下跟進。
2.到達基巖時,將鉆具反轉,旋翼收攏后,可將鉆具從孔底提出。
3.進行下一步施工
總成 穩桿器 旋翼
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A |
E |
C |
D |
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編碼 |
跟管 外徑 |
跟管壁厚 |
擴孔尺寸 |
管靴內孔最小直徑 |
所配沖擊器 |
所配鉆桿 |
KCC125 |
114 mm (4.5”) |
11-13mm (0.43”)-(0.51”) |
125 mm (4.92”) |
93 mm (3.66”) |
DHD 350 COP 32/34 |
60 mm (2.36”) |
KCC152 |
140 mm (5.5”) |
13-16mm (0.51”)-(0.63”) |
152 mm (6”) |
113 mm (4.45”) |
DHD 340 QL 40, SD-4 |
76 mm (3”) |
KCC150 |
146 mm (5.75”) |
14-19 mm (0.55”)-(0.75”) |
154 mm (6.06”) |
115 mm (4.52”) |
DHD 340 QL 40, SD-4 |
76 mm (3”) |
KCC185 |
168 mm (6.6”) |
13-19 mm (.51”)-(0.75”) |
184 mm (7.25”) |
138 mm (5.43”) |
DHD 350 QL 50, SD-5 |
76, 89 mm (3”), (3.5”) |
KCC190 |
178 mm (7”) |
13-19 mm (0.51”)-(0.75”) |
194 mm (7.6”) |
148 mm (5.8”) |
DHD350/360 QL50/60,SD5/6 |
76, 89 mm (3”), (3.5”) |
KCC205 |
193 mm (7.6”) |
13-20 mm (0.51”)-(0.78”) |
206 mm (8.11”) |
164 mm (6.45”) |
DHD360 QL 60 /SD-6 |
114 mm (4.5”) |
KCC230 |
219 mm (8.62”) |
13-20 mm (0.51”)-(0.78”) |
234 mm (9.2”) |
185 mm (7.28”) |
DHD360 QL 60, SD-6 |
114 mm (4.5”) |
KCC275 |
244 mm (9.6”) |
13-20 mm (0.51”)-(0.78”) |
273 mm (10.75”) |
219 mm (8.62”) |
DHD380 QL-80, SD-8 |
114 mm (4.5”) |