SU717224A1 - Injection-type ground anchor - Google Patents

Description

I

The invention relates to the field of construction and concerns the implementation of ground injection anchors used to fasten various structures and equipment to the ground.

A soil injection anchor is known, including a perforated tube placed in a well with elastic cuffs, a cable placed in it with a locking element at the end, and a packer 1 placed around the perforated tube.

Closest to the invention is a ground injection anchor comprising a perforated tube placed in a well with elastic cuffs, a packer with a locking element at the end and a packer 2 placed around the perforated tube.

A disadvantage of the known anchors lies in insufficiently reliable protection against corrosion and insufficiently high bearing capacity due to transmission to the hardened solution, which fixes the soil mass in the well and is located inside the entire working part of the pipe, only tensile stresses causing cracks and discontinuity of the fixed array. soil and cement stone in the castle zone. The purpose of the invention is to increase the bearing capacity of the anchor and increase the reliability of its protection from corrosion.

This goal is achieved due to the fact that the ground injection anchor, which includes a perforated tube placed in the well with elastic cuffs, a packer placed in it with a locking element at the end and a packer placed around the perforated pipe, has a glass placed around the locking element, one end of which is adjacent to the perforated pipe, and the other facing the bottom of the well and is made with a plugged perforated pipe with an elastic cuff, and the traction is made perforated. In addition, the wall of the glass can be made corrugated. In addition, the soil injection anchor can be provided with an additional glass,

placed around the perforated pipe between the packer ti wellhead, and the perforated pipe is made along the length of the composite sections, butt joint

The blind is located in the extra glass. In this case, anchor t ha can be equipped with

locking element with an additional perforated tube.

FIG. 1 depicts the described soil injection anchor, general view; in fig. 2 --7 -sequence of operations on the device described anchor.

The ground injection anchor consists of a perforated pipe 1, the openings of which are blocked by elastic cuffs 2. A packer 3 is placed around the pipe 1, which separates the working perforated part of the pipe. from deaf. To the end of the perforated pipe I is attached to the glass 4 with the perforated branch pipe 5 which is nipped at the end with the cuff. The walls of the cup 4. Can be made corrugated. In the perforated pipe 1 anchor bar is placed with a locking element 7 at the end. The locking element 7 is located in glass 4. The anchor bar may be equipped with an additional perforated tube 8 located outside the locking element, 7.

The deaf part of the perforated pipe 1 can be removable. The connection of the blind and the working parts of the perforated pipe is placed in an additional glass 9.

The process of fixing a ground injection anchor includes:

- drilling of a well with a rotary drilling machine under a CLAY solution;

- installation of an anchor in the well; - injection of cement through

an injector 10 with a tampon 11 through a nozzle 5 for replacing the drilling fluid to exit the latter through the wellhead (FIG. 2);

- moving the injector 10 with double tap 12 against the holes in the packer and forcing the hardening solution under pressure into the packer 3. At the same time, the end plug 11 is blocked by a ball valve 13 (Fig. 3);

- sequential injection of a hardening solution under the pressure of Cheryoz. Openings in the tube 1 by fitting IN1 of the borehole 10 with a double tampon 12 against each cuff 2, Starting from the bottom (Fig. 4). At the same time, under the pressure of the injectable solution, the hardening collar solution, plugging the well, is broken and a tuber zone 14 of the fixed soil is formed around the well against the cuffs;

- pouring the hardening solution 15 into the glass 4 and immersion inside the pipe & s 4 anchor rod 6 with the lock element 7 fixed in the glass 4;

Disconnection under the protection of an extra cup 9 of the hollow part of the tube 1

 remove it from the well for reuse

use (Fig. 5); séin: 6 ::: th:.; tth: :: g: 717224

- retention of anchor bolt 6 after curing the hardening solution 15 inside the glass cup 4 (Fig. 6)

- download anticorrosive hardening solution through the hole in the tension

5 to the head 16 and the additional perforated tube 8 of the anchor rod 6 in the cavity of the working part of the pipe 1 and the additional glass 9 (FIG. 7).

In the described ground injection anchor, the carrier is enlarged.

 soil abilities due to the formation of tuberous root with consistent

injection of a fixing solution and an increase in corrosion protection by transferring to the hardening solution only compressive stresses, eliminating the occurrence of cracks in the working part of the anchor, which is most susceptible to corrosion, both in the metal of the anchor rod and in the cement stone itself.

Claims (4)

Invention Formula . A primer injection anchor, comprising a perforated tube placed in the well with elastic cuffs, a packer placed therein with a locking element at the end and a packer placed around the perforated tube, characterized in that, in order to increase the bearing capacity of the anchor and increase its reliability against corrosion, the anchor is fitted around the locking element 0 glass, one end of which is adjacent to the perforated pipe, and the other facing the bottom of the well and is made with a perforated tube filled with an elastic cuff, and the traction is made perforated.   2. The primer injection anchor according to claim 1. characterized in that the walls of the glass are corrugated. 3. The primer injection anchor according to claim 1, characterized in that it is provided with an additional glass placed around the perforated pipe between the packer and the wellhead, and the perforated pipe is made along the length of the composite sections, the butt joint of which is located in the additional glass.  4. The primer injection p. 1, characterized in that the anchor rod is equipped with a perforated tube disposed outside the locking element. 0Sources of information taken into account in the examination 1.Smorodinov M.I., Fedorov B.S. Construction of foundations and structures by the method “wall in the soil.” - M., Stroyizdat. 1976, p. 59 - 60. 2.Smorodinov M.I., Fedorov B.S. Installation of foundations and structures by the method “wall in the ground.” M., Stroyiz at, 1976, p. 63 - 65 (prototype). 5 11tof / i yj (y / // iy / / f f3 12 p-; iLyLtxS 3iiX.,,  d. 5s d || ;: F ig.1 12 5 /five. f / / F ŠShMSh; , - - $ | § ;; | ;; // W L - - ---- a  2l5Y; 2Y | : NYC SCHMg FIG. 7