Laserfiche WebLink
KILDUFF RMR Aggregates, Inc. <br /> U N D E R G R D U N ❑ Rock Failure Analyses and Stabilization Report <br /> ENGINEERING INC. Mid Continent Limestone Quarry <br /> Table of Contents <br /> 1. PROJECT BACKGROUND .................................................................................................................... 1 <br /> 1.1. General Description ................................................................................................................... 1 <br /> 1.2. Regional and Quarry Geology.................................................................................................... 1 <br /> 2. SITE RECONNAISSACE........................................................................................................................3 <br /> 2.1. January 26, 2023 —Site Reconnaissance....................................................................................3 <br /> 2.2. April 14, 2023 —Site Reconnaissance ........................................................................................3 <br /> 3. KINEMATIC ANALYSES OF FAILURE MODES......................................................................................4 <br /> 4. STABILITY MODELING ANALYSES OF FAILURE MODES......................................................................6 <br /> 5. ROCKFALL ..........................................................................................................................................8 <br /> 5.1. Rockfall Modeling.......................................................................................................................8 <br /> 5.2. Rockfall Mitigation Recommendations......................................................................................9 <br /> 6. LONG-TERM STABILIZATION AND CONFIGURATION ...................................................................... 10 <br /> 7. BLASTING IMPACTS TO STABILITY................................................................................................... 13 <br /> 8. JULY 6 SITE RECONNAISSANCE........................................................................................................13 <br /> 9. MINE STABILIZATION....................................................................................................................... 15 <br /> 9.1. Active Mechanical Stabilization ............................................................................................... 15 <br /> 10. LIMITATIONS.................................................................................................................................... 16 <br /> APPENDICIES <br /> Appendix A—2023 Field Photographs <br /> Appendix B— Discontinuity Measurements and Historical Boreholes <br /> Appendix C— Kinematic Analyses <br /> Appendix D— Planar Failure <br /> Appendix E— Rockfall Modeling <br /> Appendix F—July 2023 West Face Field Photographs <br /> Appendix G—Active Stabilization Design <br /> Page ii <br /> 535 16th STREET,SUITE 620 1 DENVER,CO 80202 1 (303)732-3692 1 WWW.KILDUFFUNDERGROUND.COM <br />