ʻO ka wili ʻana ma o ka hoʻokumu ʻana me nā mea ʻoluʻolu ʻole i hui pū ʻia me nā pilikia e like me ke ana ʻana a i ʻole ka hāʻule ʻana o ka lua.Pehea e pale aku ai i kēia mau pilikia?Me nā makahiki o ka hoʻomaʻamaʻa kula a me ka noiʻi, ua hoʻomohala mākou i ka ʻōnaehana casing concentric me ka ring bit no nā noi ākea loa.Me ka hoʻokomo maikaʻi ʻana, hiki i ka ʻōnaehana i ka casing 100meters, a hiki ke hoʻohana ʻia no ka pilang kumu.
Hoʻohana ʻia i ka hoʻokumu ʻana i ke kaumaha me nā kūlana topographic paʻakikī, e like me ka ʻiliʻili, ka hoʻokumu ʻana i nā fissured, ka pōhaku, ka ʻāina o ke kūkulu ʻana, etc.
Hōʻike
D
h
H
C
G
Hōʻike
O. D. o Casing Tube(mm)
ID o ka pahu pahu pahu(mm)
ʻO ka mānoanoa o ka pā (mm)
Max.OD o ka bit pilot (mm)
Bit apo OD (mm)
Max.OD o ka Bit Maʻamau (mm)
ʻAno hāmare
Kaumaha(kg)
ʻAno hāmare TOP
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
ʻAno hāmare 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
Kiʻi Schematic Hana
KaʻAnuʻu 1:Hoʻopau ʻia ka ʻeli ʻana i loko o ka hoʻokumu ʻana i ke kaumaha.
KaʻAnuʻu 2:E hoʻohuli i ka hoʻololi o ka hāmare a huki i ka bit pilot mai ka lua.
KaʻAnuʻu 3:E hoʻololi i ka bit pilot me ka bit maʻamau e hoʻomau i ka wili ʻana i lalo.
