SDAG Monthly Meeting
Wednesday, July 20, 2016
BNS Brewing and Distilling Company
10960 Wheatlands Ave #101
Santee, CA 92071
FROM HIGHWAY 52: Take Exit 18A for Magnolia Avenue, turn left onto Magnolia, head north towards Mission Gorge Road. Make a right onto Mission Gorge Road/Woodside Avenue.
Turn left/keep left toward N Woodside Avenue and then turn left onto Wheatlands Avenue. Destination will be on the right (see the map).
FROM INTERSTATE 8: Take CA-67 north in El Cajon. Exit at Prospect Avenue or Exit 2. Turn left (or west) onto Prospect Avenue then a right (or north) onto Magnolia Avenue.
Make a right onto Mission Gorge Road/Woodside Avenue. Turn left/keep left toward N Woodside Avenue and then turn left onto Wheatlands Avenue. Destination will be on the right (see the map).
PLEASE NOTE THE SOMEWHAT DIFFERENT FORMAT OF THIS MONTH'S MEETING.
Show up at the usual time or any time after 2:00 pm and have a few beverages, purchase your own food and enjoy the talk starting at around 7:30.
Menu: Baja/Mexican Food Truck (actual Truck TBD; likely either Casanova Fish Tacos or a Street Taco Truck) with Cash Bar.
Cost: $20.00 for non-members, $15.00 for members, $10.00 for students.
if pre-registered by the deadline, $5 extra if you did not make a reservation.
Click the SDAG member checkbox on the reservation form if you are a member.
Make your reservation online by clicking the button below
no later than NOON, Monday, July 18.
RESERVATIONS CANNOT BE ACCEPTED AFTER Monday at noon.
Late reservations/cancellations are preferred over walk-ins or no-shows.
Fees payable at the meeting or pre-pay with PayPal.
As a new payment option, there will be a phone credit card reader at the meeting.
IF YOU DO NOT MAKE A RESERVATION, WE CANNOT GUARANTEE YOU A MEAL.
If you are a current SDAG member and are not getting e-mail announcements,
make sure the SDAG secretary has your correct e-mail address.
Speaker: Steven E. Borron
"Predicting Slope Failures Using Slope-Monitoring Radar"
Slope-monitoring radar systems are being used successfully in many surface and open pit mining operations around the world.
Their ability to quickly deliver data in various visual forms and to execute alarms has significantly reduced risk to miners and property in these locations.
The primary radar function that has reduced risk is their ability provide data in near-real time.
In addition, the data is graphically displayed in several formats providing geomechanical professionals the ability to confirm movement trends from multiple data sets.
This is a critical feature since identifying slope acceleration early and then using the inverse velocity trend is the only method that can accurately predict slope failure in a timely manner.
In addition, slope radar systems are extremely accurate at detecting the extent of slope surface movement.
For instance, if a slope-monitoring radar project is proactively implemented on a suspect slope, its surface movement will be detected by the radar prior to visual detection of surface deformation.
This can provide professionals with information that could help with mitigation and evacuation plans well in advance of possible acceleration events, which could lead to slope failure.
Also in areas with limited access or other environmental restrictions a slope radar system located at some distance from a suspect slope could, in some cases, allow for accurate surface monitoring without using destructive testing methods.
The inverse velocity slope failure prediction method has been used successfully at several open pit mine sites around the world. Unfortunately, the method has not been disseminated to the general public in an effective manner.
This has resulted in missed opportunities to save lives in areas that could have been easily monitored using a slope radar system and correctly interpreting acceleration in advance of slope failure.
If lowering risk to life and property is a concern then incorporating slope-monitoring radar as part of a proactive monitoring system should be seriously considered.
Steven Borron is a Senior Geologist with Bagdad Geomechanics/Freeport McMoRan, Inc. specializing in open pit mining. He currently is the supervising geologist for the Bagdad Geomechanical Department that includes three engineers and one geologist.
One of his many geological focuses is to guide the department in developing models and data correlations to improve the understanding of mass movement mechanisms and ground water problems while reducing risk in an inherently hazardous environment.
He recently developed a landslide prediction model based on inverse velocity data during the summer of 2012.
Inverse velocity data from active radar systems was used during active slope acceleration events, which led to the successful prediction of a 5-million ton failure in 2012 and a 1-million ton failure in 2015.
The prediction technique was presented to Freeport McMoRan Inc. (FMI) management, which has now implemented the technique at all FMI properties worldwide.
He has BS and MS degrees in Geological Sciences from San Diego State University.
His Undergraduate Thesis was titled, "Provenance of Puddingstones in Peninsular, California" while his Master's Thesis was on the "Geology of the Split Mountain Struzstrom Anza-Borrego Desert State Park, California".
Upcoming SDAG meetings - 2016
August 17: Monty Marshall - A little Something about Baja California
September 21: Peter Gold - Precursor to the SDAG Field Trip - The Agua Blanca Fault
October 22-24, 2016: THE 2016 SDAG Field Trip – Northern Baja California
Meetings are usually scheduled for the 3rd Wednesday evening of the month.
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