Mathematical model of seepage flow about waterlocks groundwork is set up, Infiltration room and haplont are ascertained too. Engineering example is given.
Throughout the classical period they believed that man does not create the mathematical facts; they preexist. He is limited to ascertaining and recording them.
A method to ascertain airtightness of regulable refrigeratory, airtightness material selection and a way to made air retaining wall were discussed in this paper.