Ho phunya ka har'a libopeho tse hlephileng, tse sa kopanngoeng kamehla ho tla le mathata a kang bore hole caving kapa ho putlama.Joang ho qoba mathata aa?Ka lilemo tsa boitlhakiso le lipatlisiso tsa masimong, re thehile sistimi e kholo ea casing e nang le ring bit bakeng sa ts'ebeliso e pharalletseng.Ka ho kenella hantle, sistimi e fihla ho 100meters, hape e ka sebelisoa bakeng sa ho bokella motheo.
E sebelisoa bakeng sa ho theha moroalo o nang le maemo a thata a topographic le a jeoloji, joalo ka lehlohlojane, sebopeho se phatlohileng, lejoe la majoe, letlapa la kaho, jj.
Tlhaloso
D
h
H
C
G
Tlhaloso
O. D. ea Casing Tube(mm)
ID ea Casing Tube(mm)
Botenya ba lebota la casing (mm)
Max.OD ea pilot bit (mm)
Ring Bit OD (mm)
Max.OD ea Tloaelehileng Bit (mm)
Mofuta oa Hamore
Boima ba 'mele(kg)
TOP mofuta oa hamore
P76/7-39
76
62
7
57
88
39
R32
3.2
P89/8-58
89
73
8
70
100
58
T38
5.8
P114/9-84
114
94
10
92
126
84
T45
7.5
P127/10-93
127
107
10
105
142
93
T45
10
P140/10-97
140
120
10
116
161
97
T45,T51
15
Mofuta oa hamore oa DTH
P114/9-84
114
94
10
94
126
84
COP34/COP32/DHD3.5
12
P127/10-93
127
107
10
105
142
93
COP34/COP32/DHD3.5
16
P140/10-97
140
120
10
116
161
97
COP44/DHD340/M40/SD4/QL40
21
P146/10-110
146
126
10
124
165
110
22
P168/12.7-127
168
142.6
12.7
141
188
127
COP54/DHD350/M50/SD5/QL50
27
P178/12.7-131
178
152.6
12.7
150
196
131
32.5
P194/12.7-145
194
168.6
12.7
166
214
145
COP64/DHD360/M60/SD6/QL60
42.5
P219/12.7-170
219
193.6
12.7
191
243
170
58
P245/12.7-195
245
219.6
12.7
214
268
195
DHD380/COP84/SD8/QL80
78
P254/12.7-203
254
228.6
12.7
224
276
203
84.5
P273/12.7-223
273
247.6
12.7
241
305
223
100
P325/12.7-276
325
299.6
12.7
292
350
276
135
P406/12.7-350
406
380.6
12.7
377
442
350
DHD112/QL120/SD12/N120
280
P508/12.7-416
508
482.6
12.7
478
545
416
522
P560/12.7-475
560
534.6
12.7
528
595
475
NUMA180SD18/Numa180/TH18/TS18/TK18
620
P610/12.7-513551
610
584.6
12.7
558
645
513
NUMA180
710
Setšoantšo sa Operation Schematic Figure
Mohato oa 1:Ho cheka moroalo ho felile.
Mohato2:Khutlisetsa morao hamore 'me u hule sekhechana sa sefofane ka ntle ho lesoba.
Mohato oa 3:Kenya sebaka sa pilot bit ka e tloaelehileng ho tsoela pele ho phunya fatše.
