高烈度地區(qū)滑坡治理工程效果對(duì)比研究——以巴郎村滑坡為例
發(fā)布時(shí)間:2018-05-21 17:57
本文選題:滑坡 + 地震 ; 參考:《科學(xué)技術(shù)與工程》2017年04期
【摘要】:西南地區(qū)地質(zhì)條件復(fù)雜,受地質(zhì)災(zāi)害影響最為強(qiáng)烈,加上近年來(lái)極端氣候現(xiàn)象與地震頻發(fā),地質(zhì)災(zāi)害防治工作面臨著更多復(fù)雜因素作用下的難題。以高烈度地區(qū)發(fā)育的巴郎村滑坡為例,在現(xiàn)場(chǎng)詳細(xì)調(diào)查的基礎(chǔ)上,對(duì)其破壞跡象與變形機(jī)理進(jìn)行了深入分析,計(jì)算了不同工況條件下的穩(wěn)定性系數(shù)。在此基礎(chǔ)上,針對(duì)高烈度地區(qū)滑坡治理工程優(yōu)化設(shè)計(jì)開(kāi)展了進(jìn)一步研究,利用數(shù)值模擬方法對(duì)兩套治理方案進(jìn)行了耦合分析與計(jì)算,從合位移與剪應(yīng)力分布兩個(gè)方面,對(duì)比分析了抗滑樁與擋土墻支擋效果,證實(shí)在高烈度地區(qū)抗滑樁工程具有更好的支護(hù)效果。該研究成果對(duì)高烈度地區(qū)滑坡災(zāi)害的防治工作具有一定指導(dǎo)意義。
[Abstract]:The geological conditions in Southwest China are complex, which are most strongly affected by geological disasters. In addition, in recent years, extreme climatic phenomena and frequent earthquakes have made the prevention and control of geological disasters difficult under the action of more complex factors. Taking Balangcun landslide developed in high intensity area as an example, on the basis of field detailed investigation, the failure signs and deformation mechanism of the landslide are analyzed in depth, and the stability coefficient under different working conditions is calculated. On this basis, the optimization design of landslide treatment project in high-intensity area is further studied, and the coupling analysis and calculation of two treatment schemes are carried out by using numerical simulation method, and the distribution of combined displacement and shear stress is analyzed and calculated. The effects of anti-slide pile and retaining wall are compared and analyzed, and it is proved that the anti-slide pile has better supporting effect in the area of high intensity. This research result has certain guiding significance to the prevention and cure work of landslide disaster in high intensity area.
【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;長(zhǎng)江三峽勘測(cè)研究院有限公司(武漢);
【分類號(hào)】:P642.22
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