Экспериментальное и численное исследование влияния подстилающего слоя мергеля на несущую способность междукамерных целиков.
код для вставкиСкачать622.355.12:622.256.752 . , , Lomakin@Mi-Perm.ru , , ), . , . . ., evseev@mi-perm.ru , , ) , - . . , - . : , , , , , , . , 100…130 , . - . 1,5…2,0 . 10…12 , 9,0 , 11 . 0,3…2,0 , . [1], , . , , , . : . - . , . 143 . . 2010. .2 , ( ( 4 . 1). , , . ). - , . 1 , - - , , , 17.43 68.87 18.62 ,% 1.47 5.51 2.53 4.31 1.40 0.96 0.43 0.50 2.84 - , . ( , ) ( 46 60 60 60 . , 92 ( ). - , 4 10 ), . - 5 , 3 , . . , - . Zwick-250. c [2, 3, 4, 5]. . , . 10 13 % 144 19,1 ( , W = 1,7 %) 16,5 ( - , W = 4,2 %). . , 15,5 % 10 ( 26,36 3,77 % 2,70 . - . 1). 2,19 ( 15,5 %). 6,60 3,77 %) 0,26 ( - 0,61 . , , . 35 , 30 25 20 15 10 5 0 0 5 10 15 20 ,% . 1. . 21 , - 17 , , , 24 . 1,02 0,1 ( . 2). , : - , 2,5 2,3 . ( 145 . 2) - . . 2010. .2 65 25 . , ( 65 - 90 , ). 3 , - . 2,98 %, – 14,78 %. 12,13 %, ( ). , 2,04 0,53 0,12 , , 1,5 0,36 0,07 26,36 8,90 2,70 2,19 0,26 1,38 2,05 3,41 2,31 3,09 5,33 3,97 0,70 0,15 1,77 1,07 0,38 , 1,02 0,39 0,10 65 3,77 12,12 15,50 , , ( ( , ( ( , ),% ( ( ,% ), , ), - ), % - ) , - ) 2 . 2. , 146 - 1,07 ( 16,53 ), 1,9 2,98 16,53 9,11 . 14,78 % . . ( . 3, - ). ( - ) . ( ) 17,72 . 1 /Q 0.8 0.6 0.4 0.2 0 0 4 8 12 16 ,% 1 2 . 3. (1 – ;2– ) , . - , . , , . , , - [6, 7]: C P Q SH 0 sk f m 147 [C ], (1) . . 2010. P – .2 ; Q – – ; ; H0– ; S – s– , - , kf – ; m– ; , [C] – . - , K i / 1, m (2) I2 ( D ) – i , . [8] K, (K*) - , K*: * K . C Q Q C C , – (3) - K K * * (4) , Q , Q – ; K * ; - K * , . ( . 4) . - [9]. , . 148 - . 4. .3( ) (4) . - , . . 0,3 ( . 5). , - 2,3 . (0,3 ), 0,3 2,3 . , . , (4), - . 6. , 2,3 30 %. 15 % , 1,3 20 %. 149 . 2010. .2 m = 11 . . 5. 1.2 1 /Q 0.8 0.6 0.4 0.2 0 0 2 4 6 8 10 12 14 16 ,% 0.3 1.3 2.3 . 6. , , . , . , , 0,5 150 . - . 1. . 2. 21153.2-84. . 3. 28985-91. 4. .]. ., , 2006. . ., 1985. 10 . . . ., 1991. 19 . / . - , 1979. 268 . 5. / . [ .]. .: , 1969. 392 . 6. Tournaire. Des dimensions a donner aus pilliers des carriers et des pressions aux quelles les terrains sont soumis dans les profondeurs //Annales des mine. 8 series. 1884. T.V. 7. . // . , . 1941. 7-8, 9. 8. ., . // . 2007. 1. 9. . . .: , 1975. I. Lomakin, A. Evseev Experimental and numerical researches on underlying marl strata influence on load-carrying ability of rib pillars Results of the investigation of dolomite, gypsum and marl mechanical properties variation due to dampening are given. Dependencies of variations of rock strength and deformation properties on humidity are established. With the use of mathematical modeling methods the degree of load-carrying ability of rib pillars decrease due to humidity and thickness of marl strata, bedding at the bottom of workable seam, is estimated Key words: safety pillar, load-carrying capability, strength, humidity, gypsum, marl, mathematical modeling. 22.09.10 151
1/--страниц