本文選題：采空區(qū) + 滲流量　； 參考：《金屬礦山》2017年08期

【摘要】：巖體彈性模量E_m是工程實踐中關(guān)注的因素,但直接測定E_m有一定的困難。巖體中的裂隙發(fā)育情況對E_m有很大的影響,往往裂隙間距和隙寬決定了E_m的大小。巖體環(huán)境中充滿地下水,巖體中的裂隙主導了地下水的流動,其滲流特性決定了自由面滲流量的大小。通過π定理建立了自由面滲流量與E_m之間的聯(lián)系,推導了滲流量和E_m的函數(shù)關(guān)系式,利用有限元法計算了采空區(qū)自由面滲流量,通過改變π參數(shù)繪制了反映滲流量和E_m關(guān)系的曲線圖,在已知滲流量的情況下查閱該圖可以快速計算E_m。給出了一個礦山實例,計算了該礦山巖體的彈性模量,計算結(jié)果與實際數(shù)據(jù)吻合,驗證了此方法的準確性。
[Abstract]:Elastic modulus of rock mass E _ S _ m is a concerned factor in engineering practice, but it is difficult to measure it directly. The development of cracks in rock mass has a great influence on Estack, and the gap spacing and gap width often determine the size of Estack m. The rock mass environment is filled with groundwater, and the fissure in the rock mass dominates the groundwater flow, and its seepage characteristics determine the size of the free surface seepage discharge. By means of 蟺 theorem, the relation between free surface seepage flow and E _ m is established, and the function relationship between seepage flow and E _ S _ m is derived, and the free surface seepage flow in goaf is calculated by using finite element method. By changing the 蟺 parameter, the graph reflecting the relationship between the seepage discharge and the Em is plotted. When the seepage flow is known, the Emax can be calculated quickly. A mine example is given and the elastic modulus of the rock mass is calculated. The results are in agreement with the actual data and the accuracy of the method is verified.
【作者單位】： 武漢科技大學資源與環(huán)境工程學院;
【分類號】：TD313

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