本文選題：彈性抗力系數(shù) + 地震波反射法　； 參考：《現(xiàn)代隧道技術(shù)》2017年01期

【摘要】：圍巖彈性抗力系數(shù)是隧道結(jié)構(gòu)設(shè)計(jì)的重要參數(shù),其原位測(cè)試具有難度大、費(fèi)用高的特點(diǎn)。基于此,文章提出一種根據(jù)隧道地震波反射法進(jìn)行超前地質(zhì)預(yù)報(bào)實(shí)測(cè)的圍巖地震波波速計(jì)算其彈性抗力系數(shù)的方法。首先根據(jù)實(shí)測(cè)地震波波速計(jì)算圍巖的動(dòng)彈性參數(shù),然后利用前人得出的巖體動(dòng)、靜彈性參數(shù)關(guān)系計(jì)算圍巖的靜力學(xué)參數(shù)。以此為基礎(chǔ)計(jì)算圍巖的彈性抗力系數(shù)。文章以贛龍汀州隧道為例,采用上述方法獲得了該隧道Ⅲ、Ⅳ級(jí)圍巖的彈性抗力系數(shù),分別為0.54~1.19 GPa/m和0.24~7.6 GPa/m。計(jì)算數(shù)值與我國(guó)《鐵路隧道設(shè)計(jì)規(guī)范》中Ⅲ、Ⅳ級(jí)圍巖的彈性抗力系數(shù)吻合,這說(shuō)明根據(jù)地震波反射法進(jìn)行超前地質(zhì)預(yù)報(bào)所獲得的圍巖地震波波速確定圍巖彈性抗力系數(shù)是一種可行的方法。
[Abstract]:The elastic resistance coefficient of surrounding rock is an important parameter in tunnel structure design. Based on this, this paper presents a method for calculating elastic resistance coefficient of surrounding rock seismic wave velocity measured in advance geological prediction according to seismic wave reflection method of tunnel. First, the dynamic elastic parameters of surrounding rock are calculated according to the measured seismic wave velocity, and then the statics parameters of surrounding rock are calculated by using the relation of dynamic and static elastic parameters of rock mass obtained by predecessors. Based on this, the elastic resistance coefficient of surrounding rock is calculated. Taking Ganlong Ting Zhou Tunnel as an example, the elastic resistance coefficients of the surrounding rock of grade 鈪，

本文編號(hào)：2036808