Underground Coal Mining Roof Support

During this time secondary support service was also started and in nearby future primary support will also be a service offered.

Underground coal mining roof support.

Bureau of mines quickly became the new roof support s strongest advocate. Coal mine roof support strata worldwide. In india more than 3000 million ton of coal reserve is locked up in. Today this prop is one of eleven different standing support systems strata offers.

The initial movement starts as soon as the coal which previously supported and constrained the roof strata is removed and no support is in place to resist such movement other than the bridging effect of strata supported by uncut coal ahead of the face and the supports set between the face and the goaf. The strength of the rock depends on geology and the loads are applied primarily by the in situ and. Including timber steel and concrete options. Some state agencies and miners were skeptical at first but nearly everyone was soon won over.

Case histories were reported showing that roof falls could be largely eliminated while productivity increased dramatically. Originally introduced in 1993 the strata propsetter support system remains one of strata s top selling support props through out the world. Today this prop is one of eleven different standing support systems strata offers. Coal pillars of substantially large dimensions are left out in coal mines to support the huge burden of the overlying strata.

Roof supports can only be understood in conjunction with the rock structure that they support. Underground support solutions pty ltd. Including timber steel and concrete options. Strata worldwide was founded on its line of engineered secondary roof supports for underground coal mining.