Development and Application of Forepoling Hydraulic Support

At present,the forepoling of the upper and lower ends in domestic fully mechanized coal face adopted the support form of single pillar matching with articulated roof beam.The form,"a beam three column" or "a beam four column",not only increase the labor intensity and decrease the safety,but also affect mining speed of the working face.Tiemei Group cooperated with research institutes and developed the forepoling hydraulic support which instead of the original support form,effectively controlled the roof sinking,avoided working problems of back brushing and frequently changing to play single pillar under the original form.All these improved the degree of mechanization and ensure the safety.