In certain circumstances, construction of cuttings in high-ice-content permafrost region in warm season is un-avoided; hence, risk of construction and difficult extent for technology and organization of construction is increased.

Study on sulfate and sulfur oxidation ratio in PM_(10) during heating season in Beijing;

Discussion on the Characteristic of Major Pollutant on heating Season in Urumqi City;

The paper analyzes the change of atmosphere quality in recent years,validates multiple regression equation of PM10 and energy-sources consumption structure in heating season,educes the effect on PM10 in heating season by reason of the changes of all mostly ratios of energy-sources consumption and explains that effect of improvement air quality by increasing consumption proportion of clean energy.

This paper analyzes on the meteorological data of Taiyuan City from 1961 to 2001, recalculates the outdoor calculated temperature of heating in winter, and puts forwards the possibility of energy-saving from the angle of science.