Sentence examples for fractured roof from inspiring English sources

For weeks, Aaron lives obstinately in his half-demolished house, a tarpaulin covering its fractured roof.

The paper analyses the arching action by lateral behavior of the inclined roof bolts in reinforcing the fractured roof.

Present support theories contain a number of shortcomings in the designation of fractured roof bolt parameters of rectangular or trapezoidal coal roadways.

The designated support parameters, based on anchored cluster theory can overcome the shortcomings of other support theories applied to a fractured roof of rectangular roadways or could not be calculated.

In order to ensure that the roof truss-bolt system reinforces the coal roof effectively, a lower bound of pre-tightening forces must be applied on the tie-rod for stabilizing the fractured roof by arching action.

The pre-tightening forces exerted via the tie-rod also cannot be greater than its upper bound, since the excessive tightening force will cause localized failure in the rock near the bolt tail at the abutment of the fractured roof beam.

Our anchored cluster theory can provide a theoretical basis for the design of support for rectangular fractured roofs.

These include bolt-grouting support of soft rock roadways with high stress and controlled pre-stressing of fractured roofs with obviously inclined separation.

Based on the Bossinesq equations and the Mohr strength theory, we propose a theory of an anchored cluster structure for fractured roofs and have investigated the formation of such an anchored cluster structure, its self stability mechanism and mechanical properties.

The analytical design method is based on the mechanical analysis of the fractured rock roof with reinforcement by inclined roof bolts and a horizontal tie-rod.

This paper presents an analytical design method for the truss-bolt system in reinforcing underground fractured rock roofs in coal mines.