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Reinforcing of incoherent coal pillar at longwall face no 39 204 in coal mine Lazy - knowledge, experience
Souček, Kamil ; Staš, Lubomír ; Ščučka, Jiří ; Krčmář, V.
The paper deals with first knowledge and experiences about incoherent coal pillar reinforcing in the forefield longwall face no 39 204 in colliery Lazy. The reinforcing was designed and realized by means of long grouting boreholes (up to 20 m long) and polyurethane grout CarboPur WX. Designed grouting technology usually doesn´t use for stabilization of coal seam in the local colliery conditions.

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