SU1518531A1 - Yieldable roof bolt - Google Patents

Abstract

The invention relates to the fastening of a pipeline to a permafrost soil in the conditions of its seasonal thawing and freezing and allows to increase the operational reliability of anchor support. It includes a covering pipe 1, power on c 2 and anchors 3 attached to it. Anchor 3 is made in the form of an anchor rod 6 with a thickening 7 at the upper end and a node of compliance in the form of a clip 9 attached to the cus 2 mounted on the thickening 7, and metal inserts / B / 10 and 11. In the thickening 7 and the holder 9, windows 12 are coaxially inserted into which are inserted successively one above the other B 10 and 11 with the possibility of their alternate cutting by the bottom of the window 12 of the holder 9 when the ground is deformed. When an increased load on the anchor 3 occurs, an alternate cut occurs first B 10, then B 11, which prevents pipeline 1 from being destroyed. 1 il.

Description

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The invention relates to a technique of fastening a pipeline to perennial-frozen ground in the conditions of its JHoro thawing and freezing season. The purpose of the invention is to increase the operational reliability of anchor bolting.

I The drawing shows an anchored pipeline, a cut (on the left is a node of compliance, a cut, the right is the same node, rotated 90 °).

The anchor is malleable, the lining consists of 3 spanning pipeline 1 si for sa 2 and anchors 3, placed in wells 4, drilled from the previous 5 with recession of non-thawing soil into the layer. Each anchor has an anchor rod 6 with thickenings 7 on the upper end and a supporting disk 8 on the lower end and a ductility assembly, which is made in the form of a clip 9 attached to the force pole 2, mounted on the thickening 7 of the rod and metal inserts 10 and P rectangular and circular cross section. In the thickening of the 7 rod

and holder 9 are made coaxially with window 2, into which inserts 10 11 are inserted successively one above the other with the possibility of their alternate cutting by the base of window 12 of holder 9 when deforming the soil within the thawing halo 13, Holder 9 has a cylindrical or four-sided shape .

Anchor flexible lining set as follows.

A trench 5 is opened and a well A is drilled with a non-intrusive primer. In trench 5 mon

The insulated pipeline is laid down 1 s along the 2 itself and anchors 3 are placed in the wells 4, then the state is monolithic. ground 14 or wetted with M sand. The sleeves 9 of the anchors are attached to the silo of su 2 and the trench 5 with the pipeline 1 is covered with soil 15.

Upon receipt of the soil, due to its seasonal thawing, an increased load on the anchors may occur, at which an alternate cut occurs, first 10 plugs, then liner P. When the next liner is cut, the load on pipeline 1 drops, which prevents it from collapsing. Cut inserts can be replaced with new ones.

Claims (1)

Invention Formula The anchor is malleable, including the enclosing power pipeline with and attached to it anchors, each of which is made in the form of an anchor rod with a compliance node and a supporting disc at the lower end, which is designed so that, in order to increase the operational reliability of anchor, anchor the rod is made with a thickening at the upper end, and the node of compliance is attached to the power holder, mounted on the thickening of the strayn, and metal liners, while in the thickening of the rod in the shrinkage coaxially windows in which inserts are inserted one after another successively with the possibility of their alternate cutting by the base of the window of the holder during the deformation of the ground . Editor A. Ogar Compiled by B. Usan-Podgornov Tehred L Serdyukov Proofreader V. Girn to Order 6583/39 Circulation 449 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035., Moscow, Zh-35., Rau1lska nab. 4/5 Subscription