Taking the intersection of Mining Area 7 in Baodian Mine for example,the paper discusses supporting methods and construction technology of soft rock roadway in large-span crossing points,making use of support of anchored net and sprayed concrete technology and anchor reinforcement role in the design of support parameters made good economic and effects.

The authors finally put forward some reasonable measures in temporarily shoring on intersections.

The results show that deformation and failure in areas of all styles of roadway intersections are more serious than those of roadways without any intersection,with the deformation at the cross style of roadway intersection being the most serious.

Application and Research on Support of Bolt,Net and Spraying in Intersection of Soft Surround Rock;

The application of special support at the intersection of coal mine passages;

Aimed at the feature of large intersection and working hard trouble in Zhangji Coal Mine 1110(3) fully-mechanized coal winning,we adopt bolt and anchor cable technology and combined the feature of roof rock fixed the rock around the intersection.

Instability analysis of large-bore crossing and its control;

Grouting reinforced technology for crossing of No.910 east roadway in Malan Mine;

The paper has made a analysis of destruction at arching crossing,raised the corresponding manitenance method——reinforcing by adjoining rock grouting at crossing.

In order to find reasonable reinforcement parameters for roadway intersection,based on orthogonal de- sign test,a simulation analysis was taken on reinforcement parameters for roadway intersection under different rock mass strength by FLAC~(3D),and the outcome data of the test were analyzed by range analysis and variance analysis.

Aim at the problem of complex in stress distribution and hard to support at roadway intersection caused by broken surrounding rocks,we simulated the stress distribution at roadway intersection before and after being reinforced by using the software FLAC3D.