本文選題：邊坡工程　切入點(diǎn)：大光包滑坡　出處：《巖石力學(xué)與工程學(xué)報(bào)》2017年S1期

【摘要】：針對目前大光包滑坡滑帶碎裂巖體力學(xué)強(qiáng)度參數(shù)缺乏研究這一問題,提出基于改進(jìn)后的Hoek-Brown準(zhǔn)則獲取巖體力學(xué)強(qiáng)度參數(shù)的新方法。該方法首先通過巖體基本質(zhì)量指標(biāo)BQ、巖體結(jié)構(gòu)等級SR、結(jié)構(gòu)面表面等級SCR與結(jié)構(gòu)面條件因子J_c分別對地質(zhì)強(qiáng)度指標(biāo)GSI進(jìn)行量化取值;在此基礎(chǔ)上,建立由巖體基本質(zhì)量指標(biāo)BQ估算擾動參數(shù)D的計(jì)算公式;并以現(xiàn)場調(diào)查和室內(nèi)巖石力學(xué)試驗(yàn)為基礎(chǔ),將改進(jìn)后的方法代入Hoek-Brown準(zhǔn)則中,對大光包滑坡滑帶碎裂巖體的力學(xué)強(qiáng)度參數(shù)進(jìn)行評價(jià)。與E.Hoek建議法相比,改進(jìn)后的方法獲取的巖體力學(xué)參數(shù)偏小,更為接近前人研究中的建議值,證明該方法具有一定的合理性。
[Abstract]:In view of the lack of research on mechanical strength parameters of fractured rock mass in Daguangbao landslide slide zone at present, A new method for obtaining mechanical strength parameters of rock mass based on the improved Hoek-Brown criterion is proposed. Firstly, the basic quality index of rock mass, rock mass structure grade, surface level of structure plane SCR and the condition factor J\ +\%\% C of a structural plane are used to compare the ground, respectively. The quantitative value of GSI was calculated. On this basis, the calculation formula for estimating disturbance parameter D from the basic quality index of rock mass, Bq, is established, and the improved method is added to the Hoek-Brown criterion on the basis of field investigation and laboratory rock mechanics test. The mechanical strength parameters of fractured rock mass in Daguanbao landslide slide zone are evaluated. Compared with the E.Hoek 's suggested method, the improved method is smaller than that obtained by previous studies, and is closer to the suggested value in previous studies. It is proved that the method is reasonable.
【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)國家重點(diǎn)實(shí)驗(yàn)室;
【基金】：四川省青年科技創(chuàng)新研究團(tuán)隊(duì)專項(xiàng)計(jì)劃項(xiàng)目(2017TD0018) 國家自然科學(xué)基金資助項(xiàng)目(41572291) 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)國家重點(diǎn)實(shí)驗(yàn)室團(tuán)隊(duì)項(xiàng)目(SKLGP2016Z001)~~
【分類號】：P642.22;TU45

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