烟囱倾倒过程中前冲现象的力学浅析

In this paper ,the geometrical and mathematical model on demolishing chimney with controlled blasting was built.，and the formula about angle acceleration, angle velocity, the restrain force at the base of chimney, the rotational angle when chimney rush forward and distance the chimney rush forward in the falling process. with the help of MATLAB this paper studied the relationship between the restrain force at the base of chimney which fixed rotation of chimney needs and the friction the earth in fact can provide. By calculate the variables which mentioned above ,this paper analyse the reason why chimney rush forward,and give a different idea about the rush forward of chimney in the falling process.