Laserfiche WebLink
<br />' set typically ranges from 0.5 ft to 2 ft. Joint surfaces are typically tight and appear slightly to <br />' moderately weathered. Joints are very continuous in certain locations, and discontinuous in <br />other locations. <br />Two dominant secondary joint sets are present. These joint sets are orthogonal to each other, <br />with strike orientation of one in a northeast direction, the other in a southeast direction. <br />These joints dip steeply [o near vertical out of the mining face. The secondary joint sets are <br />shown in Table 1. Spacing of joints in the secondary joint set typically range from 1 [0 5 feet. <br />Joint surfaces are typically tight and appear slightly weathered. Joints are both continuous <br />and discontinuous. <br />' The overall slope appears stable. Localized instabilities are limited to single benches and are <br />evidenced by relatively stttall block and wedge shaped slip surfaces, generally less than 10 <br />fee[ in length, and slab surfaces of up to 40 feet wide and 50 feet wide where primary jointing <br />' is continuous and dipping out of the slope and is intercepted secondary jointing. These slip <br />surfaces are as expected for the highwall and cause only localized operational inconveniences. <br />The overall condition of the slope on Benches 4, 5, 6, 7 and 8 is "competent" with isolated <br />"poor" zones. "Poor" conditions exist where previously identified shear zones exist at the <br />northwest side of the quarry (Figure 2, Locations G and M). Several other random joints <br />exist along the slope that show weathering and may have potential for localized slipping <br />(Figure 2, Locations E, F, and K). Currently, the rock mass along these joints appears <br />stable. <br />1 <br /> <br /> <br />1 <br /> <br />rl <br /> <br /> <br /> <br />G'~PROIECTSCO?00 Morraan Qwrry~008~1000VeportC000 geomChmcal addendum.doc <br />