The thesis research the calculation method of water environmental capacity for artificial controlled semi-close river taking Laofuhe River as an example.

Experiments of ecological restoration in water body of half-closed city river;

Study on The Application of Improved Vertical-flow Constructed Wetland on the Treatment of Half-closed City River;

The liner is assumed to be porous material and the partial sealing boundary condition of tunnel is introduced firstly to represente most of the real practical situations.

Based on Biot s theory of consolidation, the pressure tunnel with partial sealing in saturated soil is investigated by developing the partial sealing boundary conditions.