2019-05-24_REVISION - M1977493

• Permit No: M1977493
• IBM Index Class Name: REVISION
• Doc Date: 5/24/2019
• Doc Name: Adequacy Review Response
• From: Climax Molybdenum
• To: DRMS
• Type & Sequence: TR29
• Email Name: ECS
• Media Type: D
• Archive: No

RMR CLASS VI GROUND SUPPORT
THIS DESIGN,IN IT'S ENTIRETY,INCLUDING GROUND REINFORCEMENT PLANS,
DETAILS AND ENGINEERING CALCULATIONS FOR GROUND SUPPORT EXTREMELY POOR GROUND UP TO 12' W I D E
CLASSIFICATIONS PROVIDED BY LANGSTON&ASSOCIATES TO CLIMAX AND
HENDERSON DURING PHASE I TUNNELING OPERATIONS.REFINEMENTS TO
THE GROUND SUPPORT PLANS AND DETAILS ARE REQUIREMENTS OF
CLIMAX MOLYBDENUM CORPORATION.
INITIAL ROCK BOLT
FINAL ROCK BOLT I I PRE-SUPPORT SPILING
MAX. I I
ROUND I I
`,
II=, ..u_ LENGT
/ H I I
4X4 W2.9XW2.9 I I
WELDED WIRE REINFORCEMENT I ••••
/ 1 FT TWO-LAYERS SYNTHETIC / '#_'
FIBER REINFORCED BLOCKING MIN 6"
0\1 SHOTCRETE /:."-" • • !:
W6X25 ARCHED
�. STEEL SET N 1 ~1 TUNNEL \
�. SPRING-LINE
OI a%� 'f•I " I ® 4.OFT ® r
PRE-SUPPORT SPILING 'I -°=11=
—R5aF w
11 ;�
OI 14.0 FT FL I 4.OFT U
.I _o=1�io�1�� 2 IN STD.STEEL
11= II 1 PIPE SPREADER o
,0 O
I LL
CONTRACTOR TO MINIMIZE 0� i.
„`I ¢ TUNNEL EXCAVATION 8.OF It- 11= O
10 OVER-EXCAVATION OUTSIDE OF O I NEAT-LINE 1 p
I' NEAT LINE 0 4.OFT
10 Oh= -I �i TYPICAL TUNNEL)j 12.OFT ?, b=,_i i
� ,
10 Or'`:`l��`l=�,i AS-BUILT LINE r=°I `I:�li �_
O O_o����.�� '• W6X25 ARCHED STEEL SET E ®-4.0FT
I- --_- ------TUNNEL SILL LINE I\ ROCK BOLTS INSTALLED 18 IN
\lr - 11- 11- n- FROM INVERT OF TUNNEL ON ❑o 19
SHOTCRETE OR '�f,:'�f,:'�o B %,:' %,:
4 FT SPACING TO ANCHOR
; `I 12.0 FT
CONCRETE FOOT BLOCK - ;, ;,=o; STEEL SET TO WALL
TUNNEL CROSS-SECTION SPILING DETAIL TUNNEL CROSS-SECTION VIEW PLAN VIEW OF BACK
1) INITIAL ROCK REINFORCEMENT
RIB SUPPORT PRE-SUPPORT SPILING -7 FT,39mm SPLIT SET BOLTS ON A SYSTEMATIC 4 FT GRID WITH WELDED WIRE REINFORCEMENT
-THREE ROWS 7 FT ROCK REINFORCEMENT INSTALLED UPON INITIAL EXCAVATION.
UPPER ROWS: BOLTS INSTALLED 2 FT ABOVE 8 FT SPRING LINE W6X25 STEEL SET 2) INITIAL SURFACE SUPPORT
DIRECTION OF ADVANCE -MINIMUM 3 IN SHOTCRETE APPLIED PRIOR TO FINAL ROCK REINFORCEMENT ON ENTIRE
MID ROWS: BOLTS INSTALLED 1 FT BELOW 8 FT SPRING LINE � i i i [S�--rt4i.]OFT I i I Qo I
l i i EXCAVATION PERIMETER.
LOWER ROWS: BOLTS INSTALLED 4 FT OFF SILL I
I ® I I 31#T 3) FINAL ROCK REINFORCEMENT
LOWEST ROW BOLTS INSTALLED 18 IN FROM SILL TO ANCHOR STEEL SETS — •i— t�� ' —, I
-INSTALL 7 FT,24 TONNE SWELLEX BOLTS ON A SYSTEMATIC 4 FT GRID BETWEEN
i310FT i i i o❑ I
THREE ROWS: 7 FT,24 TONNE SWELLEX BOLTS AS SHOWN i i SHOTCRETE LAYERS AS SHOWN.
I I I I I I I I I I
PRE-SUPPORT ON ADVANCE � 4.OFT 3 OrT I 1 -INSTALL W6X25 ARCHED STEELS SETS ON 2 FT CENTERS AS SHOWN.
it
-INSTALL 12 FT#9 THREADBAR SPILING ON 12 IN CENTERS AROUND i i i iL i i ❑° 8.OFT I NOTE: RRS ARCHES MAY BE SUBSTITUTED WITH DESIGN SUBMITTAL APPROVAL.
PERIMETER AS SHOWN -}�2.OFT
l ® I i® i i i I 4) FINAL SURFACE SUPPORT
-6 FT MAXIMUM ROUND LENGTH ON ADVANCE THEN INSTALL ANOTHER i 4.OF,Z ,�, i i I -MINIMUM 3 IN SHOTCRETE APPLIED AFTER FINAL ROCK REINFORCEMENT ON ENTIRE
a I a l Lail I �Lil I o 1
ROUND OF SPILING AND ARCHED STEEL SETS
1.5FT i i i i I EXCAVATION PERIMETER.
I
NOTE: -12 FT HOLLOW INJECTION ANCHOR SPILING ON 18 IN CENTERS SCALE
� MAX.ROUND 0 7 FT,39mm SPLIT SET BOLT WITH PLATE
LENGTH 6 FT z.s' o z.s' s'
MAYBE SUBSTITUTED IN PATTERN LONG SECTION VIEW OF RIBS ® 7 FT,24 TONNE SWELLEX BOLT WITH PLATE
DESIGNED VARIOUS REVISION
WARNING CLIMAX MINE 0 Q DRAWN RLM
0 o.5 1CHE— —Climax Molybdenum
REVIEWD A" MAYFLOWER FLOOD BYPASS TUNNEL SYSTEM PROJECT NO. 12235
ISSUED FOR CONSTRUCTION RLM 6/19 "':",,,i � ,
.. jZ REVIEWED DL DRAWING
ISSUED FOR BID RLM o/,B NOT MEA RET'DES TYPICAL GROUND SUPPORT DETAILS MFT-C-14
A Frsepat-Ikikl9ln Qnpary NOT MEASURE," CLIENT MM/RV
g p ISSUEDFORCLIENT REVIEW RLM &18 PROJECTS ING,GEOLOGY,MANAGEMENT THEN DRAWING IS RMR CLASS VI GROUND SHEET 1 OF 'I
ENGINEERING,GEOLOGY,SURVEYING NOT TO SCALE DATE q/5/19
.REV DESCRIPTION OF REVISION BY DATE