Table 1 Simulation schemes of different influencing factors.

From: Modelling of enhanced gas extraction in low permeability coal seam by controllable shock wave fracturing

Influencing factor

Value

Impact times Tt

1 ~ 30

Impact strength Ts/MPa

10, 30, 50, 70, 90, 110, 130, 150, 170, 200

The lateral pressure coefficients λ

0.3, 0.5, 0.8, 1, 1.3, 1.5, 1.8, 2

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