Through condsidering rock bolt supporting effect for jointed rockmass, we establish a cylindrical damage rock bolt element model to simulate reinforcing effect of anchor bar.

The rock bolts and roof strata within the bolted height is taken as a bolt rock supporter in coal mine roadways.

Research on bolting support in “three soft” coal seams;

Talking about the application of bolting support under the conditions of compound roof in coal road tunnling;

Ground pressure monitoring of large section bolting support and its result interpretation;

Analysis on numerical simulation of bolt support for mining gateway in deep inclined seam;

Calculating and analysing the action of bolt support on surrounding rock stability in elastic and plastic mechanics;

Design of bolt support for buttock base on surrounding rock classification method of pressure releasing zone;

Research on bolt and grouting support technology for mine dynamic soft rock roadway in Qinan Mine;

In order to comprehensively utilize the fly ash and to reduce the cost of the gateway bolt and grouting support in soft rocks, the paper studied the applied technology of fly ash to mine gateway support in soft rocks.