本文選題：回彈值 + 斜長(zhǎng)花崗巖��； 參考：《科學(xué)技術(shù)與工程》2017年33期

【摘要】：以金沙江葉巴灘水電站壩址區(qū)工程地質(zhì)巖體為研究對(duì)象,現(xiàn)場(chǎng)測(cè)試23號(hào)平硐(PD23)、50號(hào)平硐(PD50)的波速(V_p)、RQD、回彈值(R)。先分析V_p、RQD、R隨硐深的變化關(guān)系,再揭示回彈值與波速、RQD、風(fēng)化程度之間的關(guān)系,建立定量模型,提出采用R對(duì)工程區(qū)部分平硐巖體特性指標(biāo)(V_p、RQD)進(jìn)行估算和風(fēng)化程度等級(jí)的判斷。研究表明:斜長(zhǎng)花崗巖回彈值隨波速增加而增加,呈指數(shù)關(guān)系,PD23和PD50的相關(guān)系數(shù)皆為0.84;回彈值隨RQD增加而增加,呈線性關(guān)系,PD23和PD50的相關(guān)系數(shù)分別為0.83和0.87;風(fēng)化程度越強(qiáng),回彈值呈相應(yīng)程度降低,變化規(guī)律呈良好的相關(guān)性。
[Abstract]:Taking the engineering geological rock mass in the dam site area of Yipatan Hydropower Station on the Jinsha River as the research object, the wave velocities of No. 23 Adit PD23, 50 Adit PD50) were tested in situ. This paper first analyzes the relationship between VpP RQDU R and cave depth, then reveals the relationship between rebound value and wave velocity, RQD, weathering degree, establishes a quantitative model, and puts forward a quantitative model for estimating and judging weathering degree of rock mass characteristic index VpRQDof part of adit in engineering area by using R. The results show that the springback increases with the increase of wave velocity, and the correlation coefficients of PD23 and PD50 are both 0.84.The springback values increase with the increase of RQD, and the correlation coefficients of PD23 and PD50 are 0.83 and 0.87, respectively, and the weathering degree is stronger. The springback value decreased to a corresponding extent, and the variation law showed a good correlation.
【作者單位】： 成都理工大學(xué)地質(zhì)災(zāi)害防治與地質(zhì)環(huán)境保護(hù)國(guó)家重點(diǎn)實(shí)驗(yàn)室環(huán)境與土木工程學(xué)院;
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973計(jì)劃)(2011CB013501) 國(guó)家自然科學(xué)基金(42272333)資助
【分類號(hào)】：TU45;TV221.2

【相似文獻(xiàn)】

相關(guān)會(huì)議論文 前2條

1 傅永勝;;巖石回彈值指標(biāo)的測(cè)試應(yīng)用研究[A];第二屆全國(guó)工程地質(zhì)力學(xué)青年學(xué)術(shù)討論會(huì)論文集[C];1992年

2 李鐵漢;;論巖體特性隨深度的變化[A];中國(guó)巖石力學(xué)與工程學(xué)會(huì)第三次大會(huì)論文集[C];1994年

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