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suetung8木蟲(chóng) (知名作家)
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[求助]
基金摘要求助50868010
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木蟲(chóng) (知名作家)
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木蟲(chóng) (著名寫手)
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中文摘要: 以區(qū)域性沙漠風(fēng)沙土路基作為研究對(duì)象,圍繞著路基構(gòu)筑物風(fēng)蝕破壞規(guī)律,路基邊坡風(fēng)蝕破壞機(jī)理以及風(fēng)蝕后路基穩(wěn)定性的評(píng)價(jià)進(jìn)行了研究。將路基土抗剪強(qiáng)度的變化輔之以微觀結(jié)構(gòu)特性的改變作為路基抗風(fēng)蝕能力的表征,對(duì)路基風(fēng)蝕進(jìn)行了量化分析研究,建立了區(qū)域性沙漠風(fēng)蝕路基抗剪強(qiáng)度的半經(jīng)驗(yàn)預(yù)測(cè)模型。運(yùn)用已建立的風(fēng)蝕預(yù)測(cè)模型,確定處于特定環(huán)境風(fēng)場(chǎng)下,風(fēng)積沙路基內(nèi)部抗剪強(qiáng)度的變化規(guī)律,對(duì)施工及正常運(yùn)營(yíng)過(guò)程中風(fēng)蝕路基的長(zhǎng)期穩(wěn)定性進(jìn)行評(píng)價(jià)。本課題的研究成果能夠揭示區(qū)域性沙漠風(fēng)蝕路基破壞機(jī)理,為評(píng)價(jià)風(fēng)蝕環(huán)境下沙漠風(fēng)積沙路基的長(zhǎng)期穩(wěn)定性,完善沙漠公路風(fēng)蝕路基的設(shè)計(jì)計(jì)算,指導(dǎo)沙漠路基施工以及邊坡防治有著積極的意義。同時(shí),也為區(qū)域性特殊路基的設(shè)計(jì)計(jì)算提供新的研究思路。 中文主題詞: 環(huán)境巖土工程;沙漠風(fēng)沙土;風(fēng)蝕路基;風(fēng)洞試驗(yàn);長(zhǎng)期穩(wěn)定性 英文摘要: Take the Aeolian roadbed in regional desert as the research subject because there are so serious wind and snow nutural disaster.The wind erosion rules, the wind erosion mechanism and the stability evaluation for wind-eroded roadbed have been researched.Several instructive results have been received. Be the changing of wind-eroded roadbed soil shear strength and microstructure characteristic as the prescription of the anti-erosion capability, a semi-empirical prediction model has been build and the quantificated analysis of wind-eroded roadbed has been finished.With prediction model built in this subject, long-time stability of wind-eroded roadbed is studied during building and working state. The prospective research results of this subject is to disclosure failure mechanism of wind-eroded roadbed soil shear strength in regional desert area, to evaluate long-time stability of roadbed in wind erosion environment and to design and calculate the regional desert Aeolian roadbed completely. The newly research direction is provided for regional special roadbed. 英文主題詞: geoenvironmental engineering;Aeolian sand;wind-eroded roadbed;wind tunnel test;long-time stability |
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