Research purposes: Tianjin underground Zhijing line is the connecting line between Tianjin West station and Tianjin station and an important part of Tianjin railway terminal as well as a shortcut of passenger dedicated line from Tianjin to Qinhuangdao and high-speed railway from Beijing to Shanghai.

The large-diameter slurry shield is the first time to be used in sandy cobble stratum in Beijing Underground Zhijing Line in Beijing area.

This paper has introduced the vegetative effects on surface runoff, inflow runoff and underground runoff.

Carrying on three different: mixed conifer, broad-leaved mixed forest and natural enclosure, combining with pure control as the contrast and precipitation as water quality evaluation, we are evaluated the water quality of surface runoff and underground runoff of those.

In view of existing hairiness and scratch in the yarn black board,through some methods such as smoothness processing,threshold value division and image repairing,can come up with a clear digital image without noise points and exactly measure the yarn diameter.

In this paper,we analyze development and defects of image processing techniques and provide some recognition algorithms to detect the structural parameter in woven fabrics,such as warp and weft densities,yarn diameter,linear density of the yarn and yarn twist angles using Digital Image Processing and realize automatically function of system with mixed program VB and MATLAB.