The Research Of Some Key Technical Problems About Changjiang Traversing Engnieering For West-East Gas Transporting

Transporting gas from west area to east area is an important action in the executing Exploiting West Area strategy. It crosses kinds of physiognomies through ten nine provinces and cities, meantime it traverses Yellow River three times and Changjiang River and Huai He River once.This paper studys some key technical problems produced by the inter-influence and inter-restrict between the tunnel travering engineering and Changjiang river. The main results are:1. First the relation between the stability of Changjiang riverbed and site selecting of engineering is discussed in this paper. Solving the basis problem of site selecting of engineering.2. Calculating and analyzing the scouring and filling up of engineering across section by using two-dimensions water and sand mathematics model which is put forward in this paper. The result provides foundation for engineering designing.3. Calculating and analyzing stability of Changjiang river quay after the project being constructed by using the predigest B. X. P method. Calculating and analyzing the change of seepage field under the bank by using the limited element method. The tunnel engineering influenced to the safety of Changjiang river-bank very small.4. The results are used by the project designing.