4 steel-making shop,the output was increased from 254 thousand tons in 2000 to 873 thousand in 2005,with the specific electricity consumption in EAF steelmaking decreased from 547 kW·h/t to 213 kW·h/t.

Based on water amount analysis and water balance test of various procedures, implementation of water saving work, management of water amount index, the work of reducing water consumption per ton steel and the work of saving fresh water consumption were carried out.

This paper expounds the necessity,ideas and principles of developing the measuring-collectiing-analyzing-and-processing system of rail wear data,and introduces the developing scheme,system performance and field application situation of this system.

The method can ensure the orthonormal constraints as well as the precise solutions and may improve precision of camera calibration and the rail wear measure system.

By setting several test track sections on Shanghai Metro Line 1,this paper analyzes the cant,superelevation,track stiffness and lubrication,as well as their affects on the rail wear.

The difference between light-type steel structures and conventional ones is that many measures have been taken to reduce steel dosage as much as possible.