本文選題：巖石力學 + 巖石裂隙網(wǎng)絡(luò)　； 參考：《巖石力學與工程學報》2017年01期

【摘要】：天然巖石中裂隙的統(tǒng)計分析是其力學性能研究的基礎(chǔ),裂隙發(fā)育幾何特征與巖石所處的應(yīng)力狀態(tài)密切相關(guān)�；诹严毒W(wǎng)絡(luò)在長度和方向上的相關(guān)性,提出一種綜合考慮裂隙長度和傾角的裂隙網(wǎng)絡(luò)幾何方向貢獻參數(shù)ζ,可以準確計算裂隙網(wǎng)絡(luò)的優(yōu)勢發(fā)育方向θ_p,進一步計算得到描述裂隙網(wǎng)絡(luò)隨機程度的隨機參數(shù)κ,將其用于泥巴山隧址區(qū)流紋巖裂隙網(wǎng)絡(luò)的分析。研究結(jié)果表明,裂隙網(wǎng)絡(luò)幾何貢獻參數(shù)ζ和隨機參數(shù)κ具有明確的幾何物理意義,裂隙網(wǎng)絡(luò)幾何貢獻參數(shù)ζ可以較為準確地計算裂隙網(wǎng)絡(luò)的綜合優(yōu)勢角θ_p,隨機參數(shù)κ可定量評價裂隙網(wǎng)絡(luò)發(fā)育的隨機程度,κ越小裂隙網(wǎng)絡(luò)優(yōu)勢方向越明顯,三者之間存在定量關(guān)系。研究成果為復雜天然裂隙網(wǎng)絡(luò)統(tǒng)計提供了一種有效的方法,為進一步開展裂隙性巖石力學特性研究奠定基礎(chǔ)。
[Abstract]:The statistical analysis of fractures in natural rocks is the basis of their mechanical properties. The geometric characteristics of fracture development are closely related to the stress state of rock. Based on the correlation between length and direction of fracture networks, A new geometric contribution parameter 味, which considers the length and inclination of the fracture network, is proposed, which can accurately calculate the dominant development direction 胃 p of the fracture network, and further calculate the random parameter 魏, which describes the random degree of the fracture network. It is applied to the analysis of rhyolite fissure network in the tunnel area of Muba Mountain. The results show that the geometric contribution parameter 味 and the random parameter 魏 of the fracture network have definite geometric and physical significance. The geometric contribution parameter 味 of fracture network can accurately calculate the synthetic dominant angle 胃 p of fracture network. The random parameter 魏 can quantitatively evaluate the random degree of fracture network development. The smaller the fracture network is, the more obvious the dominant direction of fracture network is. There is a quantitative relationship among the three. The research results provide an effective method for the statistics of complex natural fracture networks and lay a foundation for further research on the mechanical properties of fractured rocks.
【作者單位】： 西南交通大學土木工程學院;成都理工大學地質(zhì)災(zāi)害防治與地質(zhì)環(huán)境保護國家重點實驗室;成都西南交大W毶こ碳際跤邢薰，

本文編號：2030202