Distribution of Side Abutment Stress in Roadway Subjected to Dynamic Pressure and Its Engineering Application

Table 5

Factors affecting the distribution of the side abutment stress.

Influential factor	Position of the peak side abutment stress	Peak value of the side abutment stress	Scope of influence of side abutment stress	Stress concentration coefficient
Coal strength	Inverse ratio	Minor influence	Minor influence	Minor influence
Breakage position of the main roof	Minor influence	Minor influence	Minor influence	Minor influence
Depth	Direct ratio	Direct ratio	Minor influence	Inverse ratio
Immediate roof strength	Inverse ratio	Direct ratio	Minor influence	Direct ratio
Immediate roof thickness	Inverse ratio	Inverse ratio	Minor influence	Inverse ratio

Note: the position of the peak side abutment stress refers to the distance of the side abutment stress to the gob.