Method for supporting lamellar soft rock laneway by wire rope anchors

Abstract

The invention discloses a method for supporting a layered soft rock roadway with steel wire bolts. Bolt holes are drilled on the layered rock mass, and the distance between two adjacent bolt holes is controlled to be 700-1000 mm; by weight percentage , mix cement, white cement, water reducer and gypsum evenly, put them in a packaging bag to make a cement binder roll; soak the cement binder roll in water, and send it into the anchor hole; Insert the wire rope anchor into the anchor hole; and fix the anchor hole opening so that the anchor overlaps along the direction of the roadway and is hinged together with rope clips to complete the support of the layered soft rock roadway. The method of the invention closely combines the support structure with the surrounding rock, which can not only limit the free development of the deformation of the surrounding rock, prevent the surrounding rock from being loose and damaged, but also adapt to the proper deformation of the surrounding rock, so that the deformation pressure acting on the support structure will not be too large. The effective reinforcement of inclined layered weak tuff provides a new method for roadway support in weak layered rock mass.

Description

technical field

[0001] The invention belongs to the technical field of geology and mines, and relates to a method for supporting roadways along veins in inclined layered weak rock mass, in particular to a method for supporting layered soft rock roadways with steel wire bolts. Background technique

[0002] The engineering geological survey results of a copper mine stope show that the rock mass along the vein roadway belongs to the quartz hornporphyry tuff of the Middle Cambrian volcanic rock series. The inclined layered weak tuff, from the damage characteristics in the roadway, can be seen that it is neither the block failure of hard rock nor the overall deformation failure of soft rock, but the unique failure characteristics of layered rock mass. At present, the bolt support forms adopted for roadways damaged by ground pressure include: pipe seam bolt support, wedge pipe bolt support, and threaded steel bolt support. However, these support forms are not particularly ideal f...

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