Though example of second-pumping concrete after high-dropping in tunnel, this article introduced production, quality control and pouring of high-dropping concrete.

The design work of product oil pipeline is greatly different from that of crude oil pipeline, which is mostly existed in pipeline's batched transportation, transportation circle, optimization of oilcan's cubage and oil mixture's management, etc.

The paper analyzes the refined oil distribution in a branch of China Petro-chemical Group,discusses the features of oil second distribution demand,establishes a re-fined oil demand forecast model which is used to forecast the oil and vehicle demand of the next day.