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Optimization of storage coal pit retaining wall


) A Bb (b + f)] a Q ≤ 03Aa ( to + c) a 3Bb (b + c) ~ (D + An + Bb) (a + b + c) a P ≤ 02 + D (ac) + (n + rb) a 1l blog. (Per + ) a 0.8Bh2 Chi 0 ( Lu +) ≥ 0 (D + An + B6) a 0.65ko (Bh2 a Adz1) ≥ 0 which , A = 1h1; B = r2h2; D = F + G; M2 = 1Ah1o (n1 +); M4 =- a 1Bh2k0 ( such as +); E = 6M2-1.2_, two (n + b + c); P = 6 (M2 an M4); Q: 1.2L (& ; + b ten c) + P. Design principles based economy , seeking (a + b) minimum (a + b) mino but because of (11) the complexity of the solution (n ten 6 ) difficult . Taking into account the actual needs of the precision engineering , specific problem, programming , numerical methods approach (a + b) n ~ nO2 examples of a reserve coal pit , retaining walls, soil and coal were severe r1 = 18kN/m3 , r2 = 14kN/m3, hl = 6.0m, h2 = 9.0m,vibram five fingers outlet, c: 0.35m, d = 0.45m, G = 9 × 0.35 × 25 = 78.75kN/n1, take the wall at the end and soil friction coefficient = 0.4 , static earth pressure coefficient ko = 0.33,: 180kPa, corresponding to the above parameters into ( 11 ) . Programming , taking a value for n , (11 ) will correspond to the solution of nine , taking the largest solution to meet the stability requirements as the minimum value of b , thus determines a (a + b) 1 when a different value , there will be different (n + b) 2,Beats By Dre Studio, (a ten 6), ..., (a + b) N Correspondingly , take (a + b) = min [(d + b) 1, (n +6), ...,herve leger sale, (a +6)], then the a, b value is the best combination . Been shown in Figure 3 (a + b) n, with the curve , we can see when when a = 1.4m , b = 2.04m, to obtain (a + b) mm = 3.44nl. Figure 3 (n + b) 3 Conclusion casually curve analysis of the reservoir retaining wall in a coal pit soil and soil -free coal coal power in both cases by the state ,tods shoes outlet, received a left toe and right toe of the constraints equation group ,herve leger toronto, and through self-compiled program to obtain (a +6) a numerical example to explain the operation process for engineering design of a similar reference .
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7615 ïîðíîôîòî ãàëåðåè äåâî÷åê
 

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Tianjin,burberry handbags, the largest

before Chairman Mao badges , red, Wang collectors have an accident about 3 meters in diameter Chairman Mao badges , it is understood that this is by far the largest one in Tianjin badges ,mulberry handbag, Is also one of the few in the country .

While this great Chairman Mao badge was hanging on the walls of the Treasury in Mr. Wang , more than 1 meter from the ground ,prada handbags, standing on the ground by ordinary people look up to see the medal picture. Whole body is golden yellow badge , but the wind has gone through many years the color has faded .

According to Mr. Wang , who is a red collectors , a chance discovery While this badge ,tory burch bags, immediately produced the idea to buy the collection . While this badge that was linked to the seller at the Xinhua bookstore . Subsequently, Mr. Wang has spent over 10,000 yuan to buy a While this badge , hanging in the warehouse moved in again .

Red Collection Committee of Tianjin ,paul smith handbags, according to Yang Jianqing , president introduced in Tianjin While this badge is the largest one found in Chairman Mao badges , made of glass, steel, manufactured in 1964 years ago , the origin should be Shanghai, a small number in the country , had largely hung prominently in the building , the current market price of the badge should be between 30,000 to 40,miu miu handbag,000 yuan . ( Wang Qiang Qi Qi )