本文選題：煤巖體強(qiáng)度 + 莫爾強(qiáng)度包絡(luò)線�。� 參考：《煤礦安全》2016年11期

【摘要】：測(cè)量巖石的黏聚力和內(nèi)摩擦角是非常重要的,而測(cè)量得出的數(shù)值可信度到底有多高也是值得關(guān)注的。通過取若干組試件達(dá)到極限破壞狀態(tài)時(shí)的法向力σ和切向力τ,建立σ關(guān)于τ的一元線性回歸方程,并編寫了相應(yīng)程序解得最佳c、φ值,進(jìn)一步對(duì)回歸方程進(jìn)行檢驗(yàn),最終發(fā)現(xiàn)當(dāng)取顯著性水平α≥0.005時(shí),τ與σ之間有線性關(guān)系,當(dāng)取顯著性水平α≤0.001,無線性關(guān)系,結(jié)果表明得到的φ,c值都是在一定的可信度下。由此可見必須選取最合適的可信度,以得到最佳的c、φ值。
[Abstract]:It is very important to measure the cohesive force and the internal friction angle of the rock, and it is worth paying attention to how high the reliability of the measured value is. By taking some groups of specimens to reach the ultimate failure state, the linear regression equation of the normal force and tangent force is established, and the optimum C, Phi value and the value of the corresponding program are compiled. One step is to test the regression equation. Finally, it is found that when the significant level is equal to 0.005, there is a linear relationship between the tau and the sigma. When the significant level is equal to < 0.001, there is no linear relationship. The results show that the obtained C values are all under certain reliability. Thus, the most suitable reliability must be selected to get the best C and phi value.
【作者單位】： 重慶大學(xué)煤礦災(zāi)害動(dòng)力學(xué)與控制國(guó)家重點(diǎn)實(shí)驗(yàn)室;重慶大學(xué)資源及環(huán)境科學(xué)學(xué)院;
【基金】：重慶大學(xué)煤礦災(zāi)害動(dòng)力學(xué)與控制國(guó)家重點(diǎn)實(shí)驗(yàn)室自主課題重點(diǎn)資助項(xiàng)目(2011DA105287-ZD201504)
【分類號(hào)】：TD315
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本文編號(hào)：2073253