Considering the special geologic condition,engineers prolong the washing time of drilling hole,increase the pressure in water resisting test and cement grout pressure,use cement grout method of dense filling,which made remarkable achievement in water resisting.

Effect of packing density of hollow fiber contactors on shell-side mass transfer in distillation

In literature,the conclusions about the effect of packing density on mass transfer coefficient are inconsistent, which probably is due to the ignored effect of module wall and hollow fiber interaction.

In this paper, on the basis of analyzing the complex swing characteri sties of the points on the plane of moving jaw, the reasonable mobile state of the crushing stone in crushing chamber are defined, and the methods for analyzing and computing the falling height of the each crushing layer and its packing density are presented.