發(fā)布時間：2018-07-12 16:20

  本文選題：混凝土面板堆石壩 + 多通道��； 參考：《人民黃河》2017年10期

【摘要】：面板堆石壩以其獨特的優(yōu)越性在我國得到了廣泛應(yīng)用,但其病害率偏高,致命病害體現(xiàn)在防滲體系破壞引發(fā)大壩滲漏,這對大壩的檢查及加固處理帶來一定困難。大壩長期變形是引起防滲體系破壞并直接導(dǎo)致超常規(guī)滲漏量的根源,放空水庫并對防滲體系進行修補加固可有效地減少滲漏,保證大壩安全。放空系數(shù)是衡量面板壩放空能力的一個定量指標,但面板壩設(shè)計規(guī)范中并沒有給出一個設(shè)計依據(jù),現(xiàn)有工程對其取值并不統(tǒng)一。結(jié)合工程實例,論證了各種泄水建筑物的協(xié)同放空流程,說明增加低位泄水建筑物很有必要,改進了放空建筑物布置,如結(jié)合導(dǎo)流洞設(shè)置前期放空鋼管,提高了放空能力。
[Abstract]:The concrete face rockfill dam has been widely used in China for its unique superiority, but its disease rate is on the high side, and the fatal disease is reflected in the seepage caused by the damage of seepage prevention system, which brings some difficulties to the dam inspection and reinforcement. The long-term deformation of the dam is the cause of the damage of the seepage prevention system and directly leads to the abnormal leakage. The leakage can be effectively reduced and the dam safety can be ensured by emptying the reservoir and repairing and strengthening the anti-seepage system. The emptying coefficient is a quantitative index to measure the emptying capacity of face slab dam, but there is not a design basis in the design code of face slab dam, and the value of the existing project is not uniform. Combined with engineering examples, this paper demonstrates the cooperative emptying flow of various drainage structures, which shows that it is necessary to increase the low level drainage structures, and improves the layout of emptying structures, such as the installation of pre-empting steel pipes in combination with diversion tunnels, and the improvement of emptying capacity.
【作者單位】： 黃河勘測規(guī)劃設(shè)計有限公司;武漢大學;華北水利水電大學;
【基金】：國家自然科學基金面上項目(51579193)
【分類號】：TV698

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本文編號：2117735