2020-06-30_REVISION - M1974086 ‎(6)‎

• Permit No: M1974086
• IBM Index Class Name: REVISION
• Doc Date: 6/30/2020
• Doc Name: Request for Technical Revision
• From: Asphalt Paving Co.
• To: DRMS
• Type & Sequence: TR4
• Email Name: ECS
• Email Name: MAC
• Email Name: AWA
• Media Type: D
• Archive: No

Surface within profile: 2 (5 points) - Colluvium
299.00 6172.00 360.00 6172.00 602.00 6247.00 903.00 6401.00 929.00
6410.00
Surface within profile: 3 (5 points) - Tailings
299.00 6172.00 360.00 6172.00 602.00 6247.00 903.00 6401.00 929.00
6410.00
Failure Surface (Critical, from previous analysis)
---------------
Initial circular surface for critical search defined by: XL,XR,R
Intersects: XL: 583.79 YL: 6264.79 XR: 794.05 YR: 6347.83
Centre: XC: 537.31 YC: 6690.20 Radius: R: 427.94
Variable Restraints
-------------------
Parameter descriptor: XL XR R
Range of variation: 268.00 371.00 25.00
Trial positions within range: 20 20 18
- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -
RESULTS: Analysis 3 - Zone 4
Bishop Simplified Method of Analysis - Circular Failure Surface
---------------------------------------------------------------
Critical Failure Surface Search using Multiple Circle Generation Techniques
Factor of Safety for initial failure surface approximation: 1.381
There were: 6431 successful analyses from a total of 7201 trial surfaces
770 analyses terminated due to unacceptable geometry
Critical (minimum) Factor of Safety: 1.35
Negative normal stresses exist on the base of one or more slices; examine slice data and consult the
GALENA Help utility
Results Summary - Lowest 99 Factor of Safety circles
----------------------------------------------------
Circle X-Left Y-Left X-Right Y-Right X-Centre Y-Centre Radius FoS
1 604.95 6271.64 803.82 6352.50 548.63 6695.11 427.21 1.347 <-- Critical
Surface
2 604.95 6271.64 803.82 6352.50 548.06 6696.52 428.68 1.350
3 604.95 6271.64 803.82 6352.50 547.49 6697.93 430.15 1.353
4 604.95 6271.64 803.82 6352.50 546.91 6699.33 431.62 1.356
5 604.95 6271.64 803.82 6352.50 546.34 6700.74 433.09 1.359
6 604.95 6271.64 803.82 6352.50 545.77 6702.15 434.56 1.362
7 604.95 6271.64 803.82 6352.50 545.20 6703.55 436.03 1.365
8 604.95 6271.64 803.82 6352.50 544.63 6704.96 437.50 1.368
9 604.95 6271.64 803.82 6352.50 544.06 6706.36 438.97 1.371
10 619.05 6276.20 803.82 6352.50 557.53 6687.06 415.44 1.372
11 604.95 6271.64 803.82 6352.50 543.48 6707.77 440.44 1.374
12 619.05 6276.20 803.82 6352.50 556.95 6688.46 416.91 1.375
13 619.05 6276.20 803.82 6352.50 556.37 6689.86 418.38 1.378
14 619.05 6276.20 803.82 6352.50 555.79 6691.26 419.85 1.381
15 583.79 6264.79 794.05 6347.83 537.31 6690.20 427.94 1.381
16 619.05 6276.20 803.82 6352.50 555.21 6692.66 421.32 1.384