【摘要】：簡要介紹了工程實踐中碰到的幾個疑難土工問題,分別為首次采用紅土筑壩問題;河邊基坑地下水位的降低問題;軟土層在開挖期間產(chǎn)生的特殊固結(jié)問題;水中填土壩低密度填土的孔隙壓力消散問題。同時敘述了克服這些難題所采取的辦法。從這些工作中得到的啟發(fā)是:即使工程師已經(jīng)在實驗室充分了解某種特殊土的性質(zhì),但在首次應(yīng)用到實際工程時,應(yīng)特別重視從已有的類似工程中吸取經(jīng)驗和教訓(xùn);現(xiàn)場勘察和室內(nèi)試驗這兩項工作,比數(shù)學(xué)計算工作在更大程度上影響設(shè)計成果;勘察和設(shè)計人員之間的聯(lián)系和交流有助于確切了解現(xiàn)場土層情況;可靠的現(xiàn)場觀測是保證安全和經(jīng)濟的首選辦法,也是克服疑難土工問題的有效途徑。
[Abstract]:This paper briefly introduces some difficult geotechnical problems encountered in engineering practice, such as the first use of red soil for dam construction, the reduction of groundwater level of foundation pit by river, the special consolidation problem of soft soil layer during excavation, and the problem of reducing groundwater level of foundation pit by river, and the special consolidation problem of soft soil layer during excavation. Pore pressure dissipation of low density fill in water fill dam. At the same time, the methods taken to overcome these problems are described. The inspiration from these work is that even if the engineer has fully understood the nature of a special soil in the laboratory, special attention should be paid to drawing experiences and lessons from the existing similar projects when applied to practical projects for the first time. The field investigation and laboratory test affect the design results to a greater extent than the mathematical calculation work, and the contact and communication between the investigators and designers are helpful to understand the soil layer on the spot. Reliable field observation is the first choice to ensure safety and economy, and it is also an effective way to overcome difficult geotechnical problems.
【作者單位】： 中國水利水電科學(xué)研究院;
【分類號】：TU4
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本文編號：2477690