In this paper

the measurement technique and analysis method of ground vibration with various sources at iron and steel complex are described. The practical measurement cases of ground vibration excited by gas compressor

hammer

truck

train etc. at iron and steel complex are presented. The shapes of wave velocity

peak values

and the main frequency from measured point are listed. The measurement results point out that the velocity waves with different sources have different forms

which are mainly divided the wave forms into three types : the complex-steady-state wave

the shock wave

and the random wave

different main frequency spectrum

different peak values of velocity

and different decay law with distance from sources. The wave in three directions have different forms at each measured point with same seismic source

and their decay laws are different

too. The decay laws of vertical displacements caused by fallen-hammer with the distance from source quite fit in with the equation derivative by Bornitz.