Room And Pillar

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. Room and pillar variant of breast stoping also called pillar and stall is a mining system in which the mined material is extracted across a horizontal plane creating horizontal arrays of rooms and pillars the ore is extracted in two phases. Room and pillar is a common mining method mining ore bodies with a dip less than 50 degrees.

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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. This procedure is an inefficient method of resource development but is nevertheless economically suitable for tabular seams particularly if the seams are narrow. In this system a series of parallel drifts are driven with connections made between these drifts at regular intervals. There are different variations of the method depending on rock.

Room and pillar is an underground mining method that has applications to a wide variety of hard rock deposits worldwide. When the distance between connecting drifts is the same as that between the parallel drifts then a. The most common mining system is room and pillar. In the first pillars of untouched material are left to support the roof overburden and open areas or rooms are extracted underground.

It is commonly classified as an open stoping method meaning that development involves mining out underground cavities while leaving the surrounding un mined waste or ore as primary support. Room and pillar mining is suitable for tabular bodies of room height but leaves about 40 of the rock in place while exploiting the other half.

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