GEOL 106 Study Guide - Final Guide: Quick Clay, Geophone, Tiltmeter

• School: Queen's University
• Department: Geological Sciences and Geological Engineering
• Course: GEOL 106
• Professor: John Hages

Document Summary

The strength of the material can decrease: Development of new cracks (eg, during blasting). Vibrations affect sands which are prone to liquefaction. Sensitive clay (or quick clay) changes strength dramatically when vibrated, and liquefied. Shrink-swell properties (swelling occurs if water increases the space between the clay sheets). There are problems in getting accurate strength measurements: What if there are rocks and cracks that you have failed to notice. It decreases the stability of the slopes by adding weight. It creates pore pressure (p), which causes uplift. Drain water from mines: keep water away from slopes because water lubricates slopes. Use rock bolts: to increase the strength of the material; use big nails in big piles. Use mesh (screens): to control the way slopes fall down onto a highway. Build retaining walls: at the base of the slopes to keep the slopes from falling down.