Stretching propulsion chamber for the temporary removal of a stretching location in the underground mining operation

摘要

Roadway driving chamber for the temporary support of a roadhead in underground mining, with a roof structure consisting of several vertically adjustable roof members distributed over the roadway periphery and at least two supporting frames (1) arranged one behind the other in the direction of the roadway axis and adapted to the shape of the roadway cross-section, in which each supporting frame (1) consists of supports (2) vertically adjustable on the face side and of a cross girder (3) near the roof, the supports (2) are fastened to transport members and are displaceable or movable with the transport members in the longitudinal direction of the roadway, and the cross girders (3) underpin the roof members. In this roadway driving chamber, without putting up with damage to the roof during the driving and to obtain a considerable increase in performance, the actions of parting and loading and supporting are carried out in parallel owing to the fact that the roof members consist of at least two roof-member elements (4) arranged one behind the other in the longitudinal direction of the roadway, the elements (4) of each roof member are connected to one another in an articulated manner, and at least one roof-member element (4) is linked to the front supporting frame (1). IMAGE