This paper has expatiated upon the plan of "dewatering by rung tube well", which not only achieve safely and successfully the construction opration in abundant water and deep foundation pit by digging holes artificially, but also tackle the key difficulty of dewatering in deep foundation pit in the construction.

Through studying Yan Fu s translation of John Mill s classic On Liberty,the author intends to analyze his understanding about "liberty" related to China s prosperity based on previous studies.

Chinese socialism modernization strategy aim has undergone a process -from industrialization to four-modernizations,and to unification of prosperity,democracy and civilization.

Mao ze-dong put forward to the modernization stratedgy, Deng xiaoping expound the strategy s process, Jian ze-min holds and develops Mao and Deng s prosperous and powerful thinking.

The comprehensive construction technique for the tunnel passing through a already-existing depletion region being rich in water is a special engineering problem in tunnel construction,and this technique is still in a grouping stage.

The application of grouting with small pipe in rich water large grain size pebble layer;

Combining with construction practice, the paper introduces technology of pre-injecting slurry for rich water and weak rock in hydraulic tunnel, verifies construction effectiveness, generalizes construction experiences and presents deficiency.