SU1364739A1 - Anchor bolt for deep holes - Google Patents

Abstract

The invention relates to the fastening of mountain lifts and allows to increase the operational reliability of an anchor by improving its operating performance. The anchor includes a wavy rod (BC) 2 fixed in the well (C) 1 by means of a lock and a tensioning device 4. Additional locks are positionally placed along the well. The waviness of the sun 2 is made of a sinusoid, and its protrusions and depressions are located with a variable amplitude along the length. It corresponds to the nature of the change in rock displacements along the length C1. In C1, BC 2 is secured with the help of locks 3, which are immersed in the hardening composition of traffic jams, which are spaced at intervals along C1. After setting, the composition of the VS 2 is fixed on the contour 5 of generation using the device 4. 1 Cp. f-ly, 3 ill. c (J C

Description

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1

one . one

This invention relates to the fastening of mine workings, namely to anchor bolts.

The aim of the invention is to increase the operational reliability of the anchor by improving its performance.

1. shows a mounted anchor in a deep well; FIG. 2 is a graph of the function (r), where U is the mixing of rocks along the well; g is the distance from the production contour; on fig.Z - anchor after stabilization of the deformation of the rock mass.

The anchor consists of a wavy shank 2 fixed in the well 1 by means of locks 3 and a tension device D installed on the production loop 5. The waviness of the rod 2 is made along a sinusoid with a variable amplitude along the length (for example, d ,, dj and d in FIG. 1), corresponding to the nature of the change in rock displacements along the length of the well (FIG. 2). The main lock is located at the bottom of the well, additional locks are spaced apart along the well 1.

The mounting of the anchor is carried out as follows.

A wavy rod 2 is installed in the borehole 1, which is fixed to the borehole walls using

364739 2

locks 3, monolithic hardening composition of plugs, intervally placed on the well. As a hardening composition can be used, for example, cement-sand mortar. The technology of traffic jams is known.

After setting the hardening state, the rod 2 is fastened on the production loop 5 by means of a tension device 4,

U

20

- 25

thirty

Claims (2)

1. An anchor for deep wells, including a wave-shaped rod fixed in the well by means of a lock and tensioning device, which is so that, in order to increase the operational reliability of the anchor by improving its performance, the protrusions and troughs of the wave-like rod are variable length amplitude corresponding to the nature of changes in rock displacements along the length of the well, while the anchor is equipped with additional locks, which are located along the well. 2. The anchor according to Claim 1, which means that the waviness of the rod is made along a sinusoid, ////////////// 7 /, (IIU2.2 u /////////////////////////. Invention Formula 1. An anchor for deep wells, including a wave-shaped rod fixed in the well by means of a lock and tensioning device, which is so that, in order to increase the operational reliability of the anchor by improving its performance, the protrusions and troughs of the wave-like rod are variable length amplitude corresponding to the nature of changes in rock displacements along the length of the well, while the anchor is equipped with additional locks, which are located along the well. 2. The anchor according to Claim 1, which means that the waviness of the rod is made along a sinusoid, (IIU2.2 //////////////////// / 7 /