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Rock fall prediction monitoring in mines
79A
b u r d e n b e d s and t h o s e u s e d i n t h e Coal Meastwes. The types of ~ a a V l~m~, atxl a l ~ d / ~ azd i n s u l a ~ i o n layers used f o r ove~burden r o c k s are described, a~d the types of yie.1~/~ pads used in "the Coal Measures are deter~-~d: Auth.
fault is apl~oached the s t r e r ~ of rocks decreases, of ~ downthrcwn block b e i ~ less than ~ of the upthrown block. Auth~
Construction methods 7~1 HOKAO~ Z YOON, J Study on swelli~ of roadway floor in coal mine~ In Ja~anese~ ~ ' . J .FAC.ER31~,UITIV.TCK~,AI3,i ~ , P~'Pg. One of the most urgent of tcd~Ts l~oblems in coal mines is a l~o~on of w e l l t n ~ of the r o ~ y fleer. The swell i ~ o f r o e ~ a y fleers r e q = L r e s much time ar~ mo~ey t o repair." The authers cerried ou% ~he experimental stud~ cn the ~ of r ~ flocr, examined the mechanism of it azd 'the effect of fleer bol%s. The relatlo~s b e t w e e n the quantity of swellir~ a~d ms~y rackers -depth of roadway, ~hiekness of loose floor rock seam, dis~m~ce between the ~ eoel seam azd the road~7, stem-are ~ The f l e e r b o l % t ~ i s r e ~ = = ~ d e d a s a s u i t a b l e measure f o r d e e r e a s i ~ o f s w e l l / ~ . Auth.
Roof bol~ir6 in ga~aroads sub,eat to minir~ influences in the iron ere mine Konred. In G~=an. 6F,2T. GI/EKA~F,Vll2, I~, 1976,P16~-168. The r o ~ boltlr~ a p p l i e d f o r a p e r i o d of e l e v e n years to d i f f e r e n t w o r k l ~ methods u n d e r i ~ f l u e : m e s of n ~ n t r ~ o p e r a t i o n s i n a deep m ~ w~th u n s t a b l e r o c k f o r m a t i o n s was adjusted systematically to the i~dividusl requirements to solve s u ~ problems.
Geological factors of importance in underground excavations 7~S LIDDY,JC Rock fall l~edAction ~or~crir~ in mines. 3F, gR. AUST.MIN.V68, ~2,1976, FA~-16. In reviewi~ rock fall moni~ri~, the authur co~cludes that rock fall in mines ( l ~ s t s ) amd in earthquakes are Imedictable using the same se~ of measurable parameters. ~ , J A r~u~O,LJ MAXI~O,WJ How to predict coal-mlre roof co~d/tions ~efcre failure.; 3F, ~R. MIN.ER~R~, AD~,V27, ~i0,197P,P37-~0. The appl/@a~tc= o f a ~olo~Ical mcdelli~ technique at Peabody Coal's Slmc~ mine No.P, in C~io, is described. This t e ~ q ~ e - - - ~ e d a better ~ c s t l o n of areas where ~ s a f e t y eo~dA~ic~s mey be e~oun~ered, improved roof c o n t r o l cost estimates, a~d be~ter cost effectlve~eas Ln labotw, %line 8r~ ~eterlels.
7~P NA~,T WO/NAR,W V a r i a t i o n s o f %he l~hyslcal l~Oparties of rocks in vlcl~Ity of faul%s. In Polish. ~.GC~N, V32, RI, i~76,PI0-19. An ~ has been - ~ * ~o determlme ~he r a ~ e of i~fluence of faul~s on the variation of the physical properties of adjacent rocks. The varlatiom was determined on the basis of measurements of the resilier~e of roadsides driven into zones near faul~s, add of laberatc~y ~ests in which f i s s u r e s i n r o c k aa~ples ~ a k e n from t h e s e z o n e s w ~ washed o u t ; ~he r a ~ e o f t h e zone o f w e a k e m d r o c k s was d e t a r = t n = t u s i ~ the avere~ed c~rve of decrease of resilience; On the basis of the w a ~ out ~ests, the resistance of the semples to the the %urbulent flow of water u~ler presswe was & d ~ t m e d ; The resul%s c~d~tr~d b y the two methods are similar ar~ show that as the
See a l s o abstract: 784.
7~ HOWARD,TE Under,round mini~ a~d raFl.d excavation: ~F. MIN.ENGNG,V27, I~, 1975,P37-~,I. 7~7 ~m:~:~,G Prestressir~ a power t ~ . pF,2R. W A T ~ PWR A~D DAM CONSTR.APR.I~76,P69-71.
7~ GLOSSOP,R J.M0WLEM AND CO,LOI~ON,GB The invention ~ ee~ly use o f c:~.,~.,,-e~, a i r 'to e~clude wstar from shafts and tunnels duri~ cona i r , ion; 10F,36R. u~O, ~unsi~E, V26, I~, 1976,P253- 280. For ovar 100yrs the appl/cation of compressed air to exclude ~ r o u ~ e ~ from shafts and %unnels while under construction below %he water table and ~n l~rmeable ~rourd has been c~n InmCttce~ The i n v e n t i o n of T~he method b y S i r T ~ Cochrane azxl i t s e a r l y a p p l i c a t i o n a r e d e s c r i b e d . The a t ~ t u d e o f M . I . ~ u m e l t o w a r d s Cochrane's invention ar~ his failure to ¢ttemgt to apply it t o t h e c o n s t r u c t i o n of t h e Thames Tunnel a r e exam~r~d.
G rou n d w a t e r problems 749 BOUVARD, M Dry ground leakage from %umnels; 1OF. LA H 0 ~ . ~ , 1 9 7 ~ , P~5~-~66. The a u g e r r e v i e w s w a t e r flow i n u n l $ ~ d ~ s in a median n o t c o n t a ~ n t ~ ~ r o u = d ~ t e r a=d l i a b l e t o = s e p a l . He s u g g e s t s ways o f c a l c u l s t t ~ the possible leakage ra%es a r d e s t a b ] / s h i r ~ how l e a k a g e n~7 b e s t b e r e d u c e d .
Surface structures Dams and embankments 750 S~TH, ~ UNIV.MAN~,GB HC~BS,R L ~ REQIS~aLOHX)N~GB Blot analysis of eonsolidatic~ bemesth embankments. 23F, 2T, 25"R• GECTECHNIQUE,V26, ~i,1976,PI~9-171. Blofs thec~ of conso~ i s implemented by f i n i t e elements to solve field consolidztlon 1~cbleme: The method a l l o w s f o r -1-.~T~meous c h a ~ s i n & ~ e ~ y j iOsdi~ and m a t e r i a l l ~ O P a r ~ e s d u r i ~ a ~ a f t e r c o n s t r u ~ l o n , a~d e n a b l e s t h e i n f l u e n c e o f t h e s t i f f n e s s of e ~ b a n k z ~ n t s a r ~ dams o n t h e i r f o t m d ~ i o n p o r e p r e s s u r e s %o b e a s s e s s e d . T h i s i s a e e c ~ l i s h e d f o r two highway e~bankments a=d t h e r e s u l t s ~ e c c e q ~ r e d w i t h ~ l e l d m e ~ u t s : The val/dlty of c e n t r ~ a l m0delllmg add %he load trsnsf ~ within dams with sc~t ceres are also discussed.
75z LOX~EIP COY~ ET ~Tr~RaPARIStF . Damdesign in French Iracti~e: Pert one: 20F,6T.
w ~ . ~ m ASD DAM CO~.OCT.1975,P3~6-355.
b u r d e n b e d s and t h o s e u s e d i n t h e Coal Meastwes. The types of ~ a a V l~m~, atxl a l ~ d / ~ azd i n s u l a ~ i o n layers used f o r ove~burden r o c k s are described, a~d the types of yie.1~/~ pads used in "the Coal Measures are deter~-~d: Auth.
fault is apl~oached the s t r e r ~ of rocks decreases, of ~ downthrcwn block b e i ~ less than ~ of the upthrown block. Auth~
Construction methods 7~1 HOKAO~ Z YOON, J Study on swelli~ of roadway floor in coal mine~ In Ja~anese~ ~ ' . J .FAC.ER31~,UITIV.TCK~,AI3,i ~ , P~'Pg. One of the most urgent of tcd~Ts l~oblems in coal mines is a l~o~on of w e l l t n ~ of the r o ~ y fleer. The swell i ~ o f r o e ~ a y fleers r e q = L r e s much time ar~ mo~ey t o repair." The authers cerried ou% ~he experimental stud~ cn the ~ of r ~ flocr, examined the mechanism of it azd 'the effect of fleer bol%s. The relatlo~s b e t w e e n the quantity of swellir~ a~d ms~y rackers -depth of roadway, ~hiekness of loose floor rock seam, dis~m~ce between the ~ eoel seam azd the road~7, stem-are ~ The f l e e r b o l % t ~ i s r e ~ = = ~ d e d a s a s u i t a b l e measure f o r d e e r e a s i ~ o f s w e l l / ~ . Auth.
Roof bol~ir6 in ga~aroads sub,eat to minir~ influences in the iron ere mine Konred. In G~=an. 6F,2T. GI/EKA~F,Vll2, I~, 1976,P16~-168. The r o ~ boltlr~ a p p l i e d f o r a p e r i o d of e l e v e n years to d i f f e r e n t w o r k l ~ methods u n d e r i ~ f l u e : m e s of n ~ n t r ~ o p e r a t i o n s i n a deep m ~ w~th u n s t a b l e r o c k f o r m a t i o n s was adjusted systematically to the i~dividusl requirements to solve s u ~ problems.
Geological factors of importance in underground excavations 7~S LIDDY,JC Rock fall l~edAction ~or~crir~ in mines. 3F, gR. AUST.MIN.V68, ~2,1976, FA~-16. In reviewi~ rock fall moni~ri~, the authur co~cludes that rock fall in mines ( l ~ s t s ) amd in earthquakes are Imedictable using the same se~ of measurable parameters. ~ , J A r~u~O,LJ MAXI~O,WJ How to predict coal-mlre roof co~d/tions ~efcre failure.; 3F, ~R. MIN.ER~R~, AD~,V27, ~i0,197P,P37-~0. The appl/@a~tc= o f a ~olo~Ical mcdelli~ technique at Peabody Coal's Slmc~ mine No.P, in C~io, is described. This t e ~ q ~ e - - - ~ e d a better ~ c s t l o n of areas where ~ s a f e t y eo~dA~ic~s mey be e~oun~ered, improved roof c o n t r o l cost estimates, a~d be~ter cost effectlve~eas Ln labotw, %line 8r~ ~eterlels.
7~P NA~,T WO/NAR,W V a r i a t i o n s o f %he l~hyslcal l~Oparties of rocks in vlcl~Ity of faul%s. In Polish. ~.GC~N, V32, RI, i~76,PI0-19. An ~ has been - ~ * ~o determlme ~he r a ~ e of i~fluence of faul~s on the variation of the physical properties of adjacent rocks. The varlatiom was determined on the basis of measurements of the resilier~e of roadsides driven into zones near faul~s, add of laberatc~y ~ests in which f i s s u r e s i n r o c k aa~ples ~ a k e n from t h e s e z o n e s w ~ washed o u t ; ~he r a ~ e o f t h e zone o f w e a k e m d r o c k s was d e t a r = t n = t u s i ~ the avere~ed c~rve of decrease of resilience; On the basis of the w a ~ out ~ests, the resistance of the semples to the the %urbulent flow of water u~ler presswe was & d ~ t m e d ; The resul%s c~d~tr~d b y the two methods are similar ar~ show that as the
See a l s o abstract: 784.
7~ HOWARD,TE Under,round mini~ a~d raFl.d excavation: ~F. MIN.ENGNG,V27, I~, 1975,P37-~,I. 7~7 ~m:~:~,G Prestressir~ a power t ~ . pF,2R. W A T ~ PWR A~D DAM CONSTR.APR.I~76,P69-71.
7~ GLOSSOP,R J.M0WLEM AND CO,LOI~ON,GB The invention ~ ee~ly use o f c:~.,~.,,-e~, a i r 'to e~clude wstar from shafts and tunnels duri~ cona i r , ion; 10F,36R. u~O, ~unsi~E, V26, I~, 1976,P253- 280. For ovar 100yrs the appl/cation of compressed air to exclude ~ r o u ~ e ~ from shafts and %unnels while under construction below %he water table and ~n l~rmeable ~rourd has been c~n InmCttce~ The i n v e n t i o n of T~he method b y S i r T ~ Cochrane azxl i t s e a r l y a p p l i c a t i o n a r e d e s c r i b e d . The a t ~ t u d e o f M . I . ~ u m e l t o w a r d s Cochrane's invention ar~ his failure to ¢ttemgt to apply it t o t h e c o n s t r u c t i o n of t h e Thames Tunnel a r e exam~r~d.
G rou n d w a t e r problems 749 BOUVARD, M Dry ground leakage from %umnels; 1OF. LA H 0 ~ . ~ , 1 9 7 ~ , P~5~-~66. The a u g e r r e v i e w s w a t e r flow i n u n l $ ~ d ~ s in a median n o t c o n t a ~ n t ~ ~ r o u = d ~ t e r a=d l i a b l e t o = s e p a l . He s u g g e s t s ways o f c a l c u l s t t ~ the possible leakage ra%es a r d e s t a b ] / s h i r ~ how l e a k a g e n~7 b e s t b e r e d u c e d .
Surface structures Dams and embankments 750 S~TH, ~ UNIV.MAN~,GB HC~BS,R L ~ REQIS~aLOHX)N~GB Blot analysis of eonsolidatic~ bemesth embankments. 23F, 2T, 25"R• GECTECHNIQUE,V26, ~i,1976,PI~9-171. Blofs thec~ of conso~ i s implemented by f i n i t e elements to solve field consolidztlon 1~cbleme: The method a l l o w s f o r -1-.~T~meous c h a ~ s i n & ~ e ~ y j iOsdi~ and m a t e r i a l l ~ O P a r ~ e s d u r i ~ a ~ a f t e r c o n s t r u ~ l o n , a~d e n a b l e s t h e i n f l u e n c e o f t h e s t i f f n e s s of e ~ b a n k z ~ n t s a r ~ dams o n t h e i r f o t m d ~ i o n p o r e p r e s s u r e s %o b e a s s e s s e d . T h i s i s a e e c ~ l i s h e d f o r two highway e~bankments a=d t h e r e s u l t s ~ e c c e q ~ r e d w i t h ~ l e l d m e ~ u t s : The val/dlty of c e n t r ~ a l m0delllmg add %he load trsnsf ~ within dams with sc~t ceres are also discussed.
75z LOX~EIP COY~ ET ~Tr~RaPARIStF . Damdesign in French Iracti~e: Pert one: 20F,6T.
w ~ . ~ m ASD DAM CO~.OCT.1975,P3~6-355.