㼃㼛㼞㼗㼜㼕㼑㼏㼑㻌㼙㼍㼠㼑㼞㼕㼍㼘

㻻㼕㼘㻌㼜㼞㼑㼟㼟㼡㼞㼑㻌㼔㼑㼍㼐 㻮㼍㼞㻌㼞㼑㼟㼠 㻮㼍㼞㻌㼏㼘㼍㼙㼜

㻰㼞㼕㼘㼘㻌㼔㼑㼍㼐 㻰㼞㼕㼘㼘㻌㼠㼡㼎㼑

L5

L1 L2' L3 L2'' L4

OAL OAL = 㻰㼞㼕㼘㼘㻌㼠㼡㼎㼑㻌㼣㼔㼛㼘㼑㻌㼘㼑㼚㼓㼠㼔 OAL = L1 + L2 + L3 + L4 - L5 Drill tube length L1 = Oi㼘㻌㼜㼞㼑㼟㼟㼡㼞㼑㻌㼔㼑㼍㼐㻌㼘㼑㼚㼓㼠㼔

L2 = Dr㼕㼘㼘㼕 ng depth (L2㻓㻌㻗㻌㻸㻞㻎㻕 L3 = Ba㼞㻌㼞㼑㼟㼠㻌㼘㼑㼚㼓㼠㼔 L4 = Dr㼕㼘㼘㻌㼠㼡㼎㼑㻌㼏㼘㼍㼙㼜㻌㼘㼑㼚㼓㼠㼔 L5 = Len㼓㼠㼔㻌㼒㼞㼛㼙㻌㼐㼞㼕㼘㼘㻌㼠㼡㼎㼑㻌㼠㼕㼜㻌㼍㼚㼐㻌 㼜㼑㼞㼕㼜㼔㼑㼞㼍㼘㻌㼑㼐㼓㼑㻌㼠㼕㼜

DCN-DCXL5DCN-DCXL5DCN-DCXL5
25 - 29.994538 - 43.994016 - 16.531.5
30 - 33.995044 - 51.995016.51 - 17.2531.5
34 - 36.995052 - 56.996017.26 - 1831.5
37 - 39.995557 - 67.997018.01 - 1931.5
40 - 43.996068 - 161.998019.01 - 19.9931.5
44 - 51.9965162 - 257.9910520 - 21.9933
52 - 56.9970258 - 293.999022 - 24.9935
57 - 65752535

25.01 - 26.99 40 27 - 28 40

B

C

D

E

F

G

H

I

J

K

L

M