SU973863A1

SU973863A1 - Anchor

Info

Publication number: SU973863A1
Application number: SU813294213A
Authority: SU
Inventors: Геннадий Васильевич Милешин; Феликс Петрович Спиваков; Исак Леонидович Ладыженский
Original assignee: Молдавский Научно-Исследовательский И Проектно-Конструкторский Институт Строительных Материалов
Priority date: 1981-05-28
Filing date: 1981-05-28
Publication date: 1982-11-15

Description

Изобретение относится к креплению горных выработок, в частности к анкерам.The invention relates to the fastening of mine workings, in particular to anchors.

Известны анкера, включающие металлический стержень, устанавливаемый в шпур до или после заполнения его вяжу*- . ⁵щим составом [1].Known anchors, including a metal rod installed in the hole before or after filling it, I knit * -. ⁵ composition [1].

Недостатком таких анкеров является . расход значительного количества металла, которое безвозвратно теряется при по- ^,0гашении горных выработок.The disadvantage of such anchors is. Consumption considerable amount of metal, which is lost when po- ⁰ quenching mining.

Наиболее близким к изобретению по технической сущности и достигаемому результату является анкер, включающий деревянный стержень и закрепляющее ве- ¹⁵щество [ 2 ].The closest to the invention by the technical essence and achieved result, is an anchor comprising a wooden core and a fixing ¹⁵ of Great exists [2].

Недостатком такого анкера является высокая стоимость закрепляющего вещества на основе синтетических смол. Использование в качестве закрепляющего вещества недорогой бетонной смеси невозможно, так как первоначально древесина стержня впитывает влагу из бетонной смеси, а затем при усушке теряет ее, что приводит к уменьшению диаметра стержня и, следовательно, потере связи между стержнем и бетоном.The disadvantage of this anchor is the high cost of the fixing substance based on synthetic resins. The use of inexpensive concrete mixture as a fixing substance is impossible, since initially the wood of the core absorbs moisture from the concrete, and then loses it during drying, which leads to a decrease in the diameter of the core and, consequently, loss of connection between the core and concrete.

Целью изобретения является снижение затрат на крепление за счет использования бетонной смеси в качестве закрепляющего вещества.The aim of the invention is to reduce the cost of fastening due to the use of concrete mix as a fixing substance.

Цель достигается тем, что анкер, включающий деревянный стержень и закрепляющее вещество _л снабжен трубкой из синтетического материала, напрессованной на стержень, при этом наружная поверхность трубки выполнена с поперечными выступами, которые расположены равномерно по всей ее длине.The goal is achieved by the fact that the anchor, including the wooden rod and the fixing substance _l, is equipped with a tube of synthetic material pressed onto the rod, while the outer surface of the tube is made with transverse protrusions that are evenly distributed along its entire length.

На чертеже изображен анкер, установленный в шпуре, продольный разрез.The drawing shows an anchor installed in the hole, a longitudinal section.

Анкер состоит из деревянного стержня 1, трубки 2 из синтетического материала напрессованной на стержень 1, и зак*» репляюшего вещества из бетона 3, размещенного в зазоре между трубкой 2 иAn anchor consists of a wooden rod 1, a tube 2 made of synthetic material pressed onto the rod 1, and a zak * ля replicating substance from concrete 3, placed in the gap between the tube 2 and

97( стенками шпура 4. Трубка 2 имеет снаружи поперечные выступы, равномерно расположенные по ее длине, причем внутренний диаметр трубки на 2-3 мм меньше диаметра стержня 1.97 (the walls of the hole 4. The tube 2 has externally transverse protrusions uniformly spaced along its length, the inner diameter of the tube being 2-3 mm less than the diameter of the rod 1.

Установку анкера осуществляют известным способом. В качестве закрепляющего вещества используют смесь, что по сравнению с использованием синтетических смол позволяет снизить затраты до 1,38 ι руб, на один анкер.The installation of the anchor is carried out in a known manner. As a fixing substance, a mixture is used, which, compared with the use of synthetic resins, can reduce costs to 1.38 ι rubles per anchor.

Claims

The invention relates to the fastening of mine workings, in particular to ank & Known anchors, including a metal rod, installed in the hole before or after filling it with a composition tl. The disadvantage of such anchors is the consumption of a significant amount of metal which is irretrievably lost when mining operations are redeemed. The closest to the technical essence and the achieved result is an anchor comprising a wooden rod and fixing substance 2. The disadvantage of such an anchor is the high cost of fixing material based on synthetic resins. It is impossible to use an inexpensive concrete solution as a binding agent, since initially the wood absorbs moisture va of the concrete mix onto the rod and then loses it during drying, which leads to a decrease in the diameter of the rod and, therefore, loss of communication between the rod and concrete. The aim of the invention is to reduce the cost of fixing due to the use of the concrete mix as a fixative. The goal is achieved by the fact that the anchor, which includes the wooden core and fixes the substance; is provided with a tube of snickering material pressed on the rod, while the outer surface of the tube is made with transverse protrusions that are equally spaced along its entire length. The drawing shows the anchor installed in the hole, a longitudinal section. The anchor consists of a wooden rod 1, a tube 2 of a composite material pressed onto the rod 1, and a binding substance of the concrete 3, placed in the gap between the tube 2 in the walls of the hole 4. The tube 2 has transverse protrusions on the outside evenly spaced along its the length, and the internal diameter of the tube per mm is less than the diameter of the rod 1. The installation of the anchor is carried out in a known manner. 16 as a fixative, a mixture is used, which, as compared with the use of synthetic resins, reduces the costs to 1.38 rubles per anchor. Claims of the Invention Anchor comprising a wooden core and an anchorage substance, which is necessary in order to remove the cost of anchorage due to the use of a concrete mix as an anchor substance, the anchor is provided with a plastic material pressed onto rod, while the outer surface of the tube is made with transverse protrusions, which are located evenly along its entire length. Sources of information taken into account in the examination of 1.Mostkov V.M. Underground structures of a larger section. M., Nedra, 1974, p. 50-54.

2. Shirokov, AP, et al. Calculation of anchor bolting for various conditions of use. M., Nedra, 1976, p. 8-9 (prototype).