The application of engineering geology to specific adit digging at deep shaft;

This paper introduces the application of grouting stabilization in the excavation of big chamber within the fracture zone and the obtained results.

Numical simulation method is empolyed to study the dynamical resopnses law of excavating tunnel induced by cuthole blasting,the distribution law of peak particle velocity(PPV)of surrounding rock mass in distance from blasting center is found,the PPV attenuation law in different part is also provided.

This paper puts forward the reasonable optional method of timbering parameter for big section room construction,as well as the items should be noticed and the problems should be solved first in construction course.

Through analysis to weak coalbed and harmfulness to roadway,main haulage roadway and room supporting design and adaptability condition are discussed in weak coalbed.

According to service rife of room and feature of surrounding rock,pressure situation of room was analyzed,supporting parameter was counted on the basis of combined arch theroy.