本文選題：隧道洞口　切入點(diǎn)：落石災(zāi)害　出處：《鐵道工程學(xué)報(bào)》2017年05期

【摘要】：研究目的:西南山區(qū)隧道進(jìn)出口段往往位于溝谷,地形切割強(qiáng)烈,洞口仰坡易發(fā)生崩塌落石災(zāi)害。為評價(jià)落石災(zāi)害風(fēng)險(xiǎn),本文建立新的隧道洞口段危巖落石風(fēng)險(xiǎn)的綜合評估流程以及多指標(biāo)綜合評估模型,克服以往確定指標(biāo)權(quán)重時(shí)人為因素影響較大的缺陷,為今后隧道洞口坡段落石災(zāi)害治理決策、落石計(jì)算和防治工程等設(shè)定風(fēng)險(xiǎn)等級提供依據(jù)。研究結(jié)論:(1)將可拓學(xué)理論引入隧道洞口危巖落石風(fēng)險(xiǎn)評估中,建立了隧道洞口危巖落石風(fēng)險(xiǎn)的可拓綜合評估流程,構(gòu)建了落石風(fēng)險(xiǎn)的多指標(biāo)可拓綜合評估模型;(2)對定性指標(biāo)做定量化處理并對評價(jià)指標(biāo)進(jìn)行歸一化處理,使得評估指標(biāo)具有可比性,并提出用簡單關(guān)聯(lián)函數(shù)確定各指標(biāo)權(quán)重;(3)構(gòu)建了隧道洞口危巖落石風(fēng)險(xiǎn)分級的物元可拓模型,將落石風(fēng)險(xiǎn)等級定為極低風(fēng)險(xiǎn)(Ⅰ)、低風(fēng)險(xiǎn)(Ⅱ)、中等風(fēng)險(xiǎn)(Ⅲ)、高風(fēng)險(xiǎn)(Ⅳ)與極高風(fēng)險(xiǎn)(Ⅴ)五類,通過工程實(shí)例驗(yàn)證并利用層次分析-模糊數(shù)學(xué)綜合評價(jià)法進(jìn)行對比,驗(yàn)證了該評價(jià)模型的評估結(jié)果是合理的、可行的;(4)本研究結(jié)果可為落石風(fēng)險(xiǎn)評估提供一種新的思路。
[Abstract]:Research purpose: the entrance and exit section of tunnel in southwest mountainous area is often located in the gully, the terrain is cut strongly, and the collapse and falling rock is easy to occur on the upside-slope of the entrance of the cave, in order to evaluate the risk of the rock fall disaster, In this paper, a new comprehensive evaluation process and a multi-index comprehensive evaluation model for the risk of rock fall from dangerous rock in the tunnel entrance section are established, which overcomes the defects of human factors in determining the weight of the index in the past, and it is a decision for the future control of the rock disaster in the section of the tunnel entrance slope. The research conclusion is that the extension theory is introduced into the risk assessment of the dangerous rock falling in the tunnel entrance, and the extension comprehensive evaluation process of the risk of the dangerous rock falling in the tunnel entrance is established. In this paper, a multi-index extension comprehensive evaluation model of rock fall risk is constructed. The qualitative index is treated quantitatively and the evaluation index is normalized, which makes the evaluation index comparable. A matter-element extension model for risk classification of dangerous rock falling in tunnel mouth is established by using simple correlation function to determine the weight of each index. The grade of rock falling risk is classified into five categories: very low risk (鈪，

本文編號：1681518