Roof collapse treatment method for detecting inbreak area through drilling peeping instrument

Abstract

The invention discloses a roof collapse treatment method for detecting an inbreak area through a drilling peeping instrument. A hole is drilled in an inbreak heap on the upper middle portion of a tunnel cross-section, an angle alpha is formed between the plane in the length direction of the drilled hole and the plane where a roadway bottom plate is located, and according to the range of the angle alpha, the angle is 63 degrees under the condition that surrounding rock is extremely unstable, the angle is 49 degrees under the condition that the surrounding rock is unstable, the angle is 45 degrees under the condition that the surrounding rock is generally stable, the angle is 42 degrees under the condition that the surrounding rock is very stable, and the angle is 28 degrees under the condition that the surrounding rock is quite stable. According to the roof collapse treatment method for detecting the inbreak area through the drilling peeping instrument, a simple, safe and reliable treatment method is provided for roadway roof caving through grouting filling and reinforcing of a big roof area and partial caving gangue.

Description

technical field [0001] The invention relates to the field of mining, in particular to a method for controlling roof collapse by using a borehole peeping instrument to detect a caving area. Background technique [0002] Due to poor surrounding rock conditions or external stress disturbances, large-scale roof caving often occurs in underground roadways. In order to ensure that the roadway satisfies its use characteristics during the service period, it is necessary to remove the fallen gangue and at the same time clean the roof caving area. The surrounding rock is reinforced to restore the smoothness of the roadway. The traditional method is to connect the empty roof area with wooden piles while clearing the falling gangue, and install the backboard and metal brackets under the wooden piles according to the design outline of the roadway. It is difficult to guarantee personal safety when working in a goaf area without support. In addition, wooden stacks are far less dense than ...

AI Technical Summary

Problems solved by technology

The traditional method is to connect the empty roof area with wooden piles while clearing the falling gangue, and install the backboard and metal brackets under the wooden piles according to the design outline of the roadway. It is difficult to guarantee personal safety when working in a goaf area without support. In addition, wooden stacks are far less dense than rocks, and the possibility of secondary caving under weak surrounding rocks is extremely high. The timber used for roofing is easy to rot and deteriorate in a humid environment, so it is urgently needed A Simple, Safe and Reliable Roof Collapse Control Method Using Borehole Peeping Instrument to Detect Caving Area

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