SU1627717A1 - Method of installing tubular anchor - Google Patents

Abstract

The invention relates to the attachment of rocks. The purpose of the invention is to increase the carrying capacity of the anchor by increasing the depth of penetration of the anchor pipe (AT) into the hole walls. Before installing the AT, a hydrocline device is inserted into the hole, with which the hole walls are deformed by destroying the rock. After removal of the destroyed rock from the bore-hole and the hydroclinic device, an AT is installed in it and its plastic deformation is performed according to the shape of the hole. Zonal deformation of the walls of the hole along its length is also carried out. Plastic deformation of AT must be carried out only in Meciax deformations of the walls of the hole made before the installation of AT 1 C. the item of f-ly, 4 ill.

Description

FIELD OF THE INVENTION The invention relates to the mining industry, namely to the installation of tubular anchor lining.

The purpose of the invention is to increase the carrying capacity of the anchor by increasing the depth of penetration of the anchor pipe into the walls of the hole.

FIG. 1 shows a hole before placing a hydroclinic device in it, a section along the axis; in fig. 2 - the same, after deformation of the walls of the hole; Fig. 3 is the same after inserting the anchor tube into the septor and plastic deformation thereof; in fig. 4th, with zonal deformation of the hole wall.

The method step is included as follows.

In a fixed array of rocks, bore-holes 1 with a diameter of 42 56 mm and more. Then a hydrocline device, for example, of the type of GRU, is inserted into the hole, and with its help, the walls of the hole are deformed.

The walls of the hole are deformed mainly in the castle part 2 of the hole. Cord

can be deformed with giving it a taper both on a separate part of the hole, and along its entire length. Tapering is achieved by moving the hydroclinic structure in the hole with an increase in overpressure from the minimum — when the device is placed at the hole of the hole, to the maximum — when placed at the bottom of the hole.

After the operation is completed, deformation of the walls of the bore-hole (or expansion of the bore-hole) is removed, the hydroclinic structure is removed, and fragments of broken rock are removed from the hole, for example, by blowing it out with compressed air. Thus, the bottom part of the hole or its parts expand with an increase in the diameter of the hole by 5-50 mm or more.

After removal of the destroyed rock from the hole, an anchor pipe 3 is installed in it with an external diameter equal to (or 1-5 mm smaller) the diameter of the hole. On the production side, the pipe 3 is equipped with a support plate and tensioning device 1 J

a royka in the form of a laq (do not show) screwed onto the end jutting out of the hole

Floe.ie of installation of pipe 3 is carried out by means of a hydroclinic device (n (shown)), which is inserted into the pipe channel with a rod to the bottom of the hole and plastically deform pipe 3, pressing its walls against the walls of the hole (Fig. 3) After-nt ishdekaug throclinic device and carry out the nat / kenya anchor

Except for goth. Before installation of the anchor pipe, a unnumbered deformation of the hole wall along its length is carried out. After removing the rock fragments from the hole, the last anchor brute is introduced into the latter and is produced with the help of a hydrocline device for plastic pipe deformation, pressing cieiiKH to the hole bore holes. The distance between iv parts and 4 holes of the hole can be 0 4 0.7 m

P i ichs1 K. to the formation of the anchor pipe

I would be met I LOOK ONLY IN ML4ia formation i i iok hole, proi (we carry non before packing anchor tube

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Claims (1)

1. A method of installing a tubular anchor, including drilling a hole, placing an anchor tube therein, inserting a hydrocline device into the tube cavity and spreading it in a pipe for plastic deformation of the latter, characterized in that, in order to increase the anchor bearing capacity by increasing the anchor insertion depth pipes into the walls of the hole, additionally before installing the anchor pipe, a hydrocline device is placed in the hole and deforming the walls of the hole by destroying the rock, and installing and deforming Contents of the anchor pipes is carried out according to the form of the hole after removal of the last Hydrowedge device and pa f or- shennoy hydrochloric breed 2 The method according to claim 1, characterized in that the deformation of the walls along its length is carried out Fig 1 Fig 2 FIG. five 3- four FIG.