Deep Blasting

From Novapoint 19.2x the function for deep blasting was moved to the dialog for Advanced Pavement.

The dialog can be started from the following locations:

MOUS_ICO Novapoint Roadtask > Design > Model > Advanced Pavement

MOUS_ICO Cross-section Viewer > Right-click on pavement surfaces

MOUS_ICO Road Modeler > Data > Advanced Pavement

…then select the Deep Blasting surface from the drop-down menu on the left-hand side.

Use this function to apply deep blasting lower than the pavement description.

In deep blasting, the rock is drilled and blasted to a level, which is situated below the final formation level (the roadbed edge).

• Deep blasting will be carried out primarily to ensure good drainage at rock cuttings.

• During the winter, this could lead to frost and ice damage.

• When the frost melts, the consequences might be decreased load-bearing capability.

In Road Design, rock-cutting fill is differentiated from deep blasting fill. Rock-cutting fills are materials, which are removed across the designed road surfaces, whereas deep blasting materials are materials below the level of the roadbed between the bases of the right and left drainage ditches.

The description is used in the same way as the Advanced Pavement, but with a few differences:

• Depth

• Width

Depth

• The depth for the deep blasting tells the function of what minimum depth the deep blasting must satisfy.

• The minimum depth will be checked across the cross-section within surface groups +/- 2.

Width

• The width is applied as in Advanced Pavement, but will be restrained so that it does not extend under the rock cut.

• The width of the deep blasting is terminated according to the description of the End Surface.

• If the width is not defined, the deep blasting will be performed out to the cutting, with an intended extension of the innermost rock-cutting surface with a positive gradient, and will then follow this up to the bottom of the drainage ditch.

• If the width is so great that it will theoretically stretch beyond the bottom of the drainage ditch, the deep blasting will be carried out as if the width had not been defined, i.e., a cutting will be sought using an extension of the innermost rock cutting surface with a positive gradient.

When applying the different data for the deep blasting please refer to Advanced Pavement for more information.

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