Materiały konferencyjne SEP 1992

CD I X >t m- A S y a j 1 l t i 1 t t 1 w, 1 t 1 , ROADWAY J L Ul O T I ly • A. -I* I --łW I —L-. I I t 19 K ROADWAY F i g - 1 Typical h««dlng locatioas• M • thlckziMB of th« A as daily advmnc0 o£ tlw -MliijkŚitiiłl^k—iŁiś——— Ml 101 10s F i g . 3 Sttiamlc r»card durijag a taat drllllaff in a coal 9«am. TbA accttl«raa»t«r-borttbol« diflta&ctt Is about 1 m. Uppto* tracki drllling aapth 2 - 3 m, 4 1 /m drlll cutttlag. Ki^a tracki drillii^ dspth 3 - 4 m, 5.5 1 /m drlll cuttting. Lowar trac^: drillli^ daptb 4 - 4«5 m, 10 1 /m drlll cuttting. F i g . 2 Typlcal tast-drllling-schania for a lo&gwall-faea. M K thicknaaa o£ tha saam, A « dally advazic« o£ tba faea. 8 ł t , 1 1 »pil/l^iTiT^^.l^ ^l^sA 190 meOUEMOYOtf 1MOO OJf F i g . 4 Accalarogram of drillinff with aznplltuda apectruro taat Ita