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<br />S1u}IBIT 21 <br />PORTAL,, %ACCB$S ROAQ <br />INTBRII~t SLIDE C©NTROL <br />• <br />• <br /> <br />las:of Apsi1 12:, 1993,. an approximate 13Q tong seation of this portal <br />aceees. road had, slid about seven vertica•I feet. The slide is <br />approximately ceatered on the mine ventilatiost lan. The "section of <br />road ghat .slid' contained cracks and scarps but ;'was basically <br />intact. The fractured road section was simply 1 inq beiben feet <br />below its original location.,. The mine ventileit~on fan 'was not <br />affected by t4,e slide... <br />liumerotxs. souzces. of water were: apparent in the scarp ai$'jacent to <br />the aceesa aoa+~. at the approximate•~(-7') level. o! the road. On <br />lxpril 12th. the. Operator; mobilized personnel and equipment to <br />establish access into the mine an to.coAtain and relieve the water <br />is the scarp <br />!'french drain, nonsistng of Q-inch slotted pipe Dedaed in 1 l/2' <br />washed sock,, was constructed aloxrg the length o! the scarp. The <br />water from the french. drain is conveyed dowse the slope to the <br />access road ditch 'in a 6-inch Qliameter ADS pipe,.. Aa of Aprii 13th <br />the fren~ drain was conveying 4 gallons per g~inute from the slide <br />area, <br />The• road was establisher} by br-eakin+~ down the "aca,Yp oa each end of <br />the road.. The road now. ramps. dow~at intq, the area that slid, then <br />ramps bacl~ up, to the origiAal 3eve1 of tlse Toad. <br />21-1 <br />Rev. ~-13-93 <br />