Roof And Pillar Mining

Room and pillar variant of breast stoping is a mining system in which the mined material is extracted across a horizontal plane creating horizontal arrays of rooms and pillars.

Roof and pillar mining.

The major partial mining method are strip pillar mining wongawilli strip pillar mining room and pillar mining and thickness limited extraction. Deep cover retreat mining overburden in excess of 750 ft is an important emerging issue which. Lind investigated seven full and partial pillar recovery operations in new south wales australia and described the certain factors which result in safe and economical retreat mining. Room and pillar is an underground mining method that has applications to a wide variety of hard rock deposits worldwide.

In this system a series of parallel drifts are driven with connections made between these drifts at regular intervals. Caving of the overlying strata generally extends to the surface causing surface subsidence. When the distance between connecting drifts is the same as that between the parallel drifts then a. Other articles where room and pillar mining is discussed.

These statistics and reviews emphasize the need for continuing efforts to reduce roof fall fatalities and injuries. Pillar and roof span stability are two essential prerequisites for safe working conditions in room and pillar mines. The most common mining system is room and pillar. To do this rooms of ore are dug out while pillars of untouched material are left to support the roof overburden calculating the size shape and position of pillars is a complicated procedure and is an area of.

Strip mining technology is an effective measure to reduce the overburden strata and surface movement and deformation and it is also one of the important measures in the system of green mining.