It includes: the application background,the determination of support parameters,the synopsis of substep drivage method,the construction craft and experimental method,the adopting measures to the project quality after using the substep drivage method,the frond and back application of the supstep drivage method,the useful effect etc.

This paper applies the non-metal ultrasonic technology to testing the range of cracked surrounding rock of the roadways at the island coal face,collects sufficient detailed data,from which the law that the range of cracked surrounding rock follows has been summarized,and provides the basis for the optimizition of support parameters.

This paper makes the numerical analysis on the features of the wall rock pressure of the roadway and the support parameter of roadway anchor bolt in No.

Comparison and analysis of the supporting parameters of the tunnel in the shallow buried section of a freeway

Make sure the reasonable supporting parameters of working face,which provides basis for coal roof controlling and safely and efficiently coal mine working.

Taking Jiudingshan Copper and Molybdenum Mine as an example,numerical simulation for different options of rockbolt supporting have been carried out by 3DE-σ and the effects of supporting parameters on stability of wall rock have been analyzed through the simulation results.