SU977811A1

SU977811A1 - Anchor support for mining workings

Info

Publication number: SU977811A1
Application number: SU813250511A
Authority: SU
Inventors: Юрий Васильевич Шувалов; Сергей Александрович Ломов; Владимир Иванович Хуцишвили; Юрий Сергеевич Кузнецов
Priority date: 1981-02-25
Filing date: 1981-02-25
Publication date: 1982-11-30

Description

Изобретение относится к анкерной крепи горных выработок.The invention relates to anchor support mine workings.

Известна анкерная крепь, включающая анкеры со стальными опорными плитками [ 13.Known anchor support, including anchors with steel base tiles [13.

Однако указанная крепь имеет ограни- ⁵ценную область применения в монолитных и слаботрещиноватых породах средней и высокой прочности, когда вероятность об рушения пород в промежутках между анкерами мала.However, this support has a limited ⁵ area of application in monolithic and slightly fractured rocks of medium and high strength, when the probability of rock failure in the intervals between the anchors is small.

Наиболее близкой к предлагаемой по технической сущности и достигаемому результату является анкерная крепь для горных выработок, включающая анкеры с подхватами [2].Closest to the proposed technical essence and the achieved result is anchor support for mining, including anchors with pickups [2].

Недостатком известной крепи является отсутствие’у нее теплоизоляционных свойств, в связи с чем невозможно использовать ее в воздухоподающих выработках горных ₂₀предприятий, разрабатывающих месторождения полезных ископаемых подземным способом в сложных геотермических условиях (многолетнемерзлые породы и по2 роды с высокой естественной температурой) .A disadvantage of the known roof support is its lack of heat-insulating properties, and therefore it is impossible to use it in the air supply mine workings of ₂₀ mining enterprises developing underground mineral deposits in difficult geothermal conditions (permafrost and rocks with high natural temperature).

Цель изобретения - улучшение вентиляционного режима в горных выработках путем теплоизоляции поверх,ибсти горных пород.The purpose of the invention is the improvement of the ventilation regime in mine workings by thermal insulation on top of the rocks.

Поставленная цель достигается тем, что анкерная крепь для горных выработок, включающая анкеры с подхватами, снабжена теплоизоляционным ограждением из мелкоячеистой сетки со слоем штукатурки, прикрепленным к внутренней стороне подхватов, при этом между ограждением и породой образованы воздушные промежутки.This goal is achieved in that the anchor support for mine workings, including anchors with pickups, is equipped with a heat-insulating fence made of fine mesh with a layer of plaster attached to the inside of the pickups, while air gaps are formed between the guard and the rock.

На фиг. 1 изображена выработка с анкерной крепью, поперечное сечение; на фиг. 2 - выработка, продольное сечение; на фиг. 3 - узел 1 на фиг. 2.In FIG. 1 shows a working with anchor support, cross section; in FIG. 2 - development, longitudinal section; in FIG. 3 - node 1 in FIG. 2.

Анкерная крепь в выработке 1 с пробуренными в окружающие породы шпурами 2 состоит из анкеров 3, подхватов 4. опорных плиток 5, гаек 6, навинченных _tна хвостовики 7 анкеров, и теплоизоляци077811 4 (энного ограждения из мелкоячеистой сетки 8 со слоем штукатурки 9, которое прикреплено к внутренней стороне подхватов 4, при этом между ограждением и породой образованы, воздушные промежутки 10. · ₅ Anchor support in excavation 1 with bore holes 2 drilled into the surrounding rocks consists of anchors 3, grabs 4. base plates 5, nuts 6, _t screwed onto the shanks of 7 anchors, and thermal insulation 077811 4 (a net fence of fine mesh 8 with a layer of plaster 9, which attached to the inside of the pickups 4, while air gaps are formed between the guard and the rock 10. · ₅

Анкерную крепь устанавливают следующим образом.Anchor support set as follows.

В горной выработке 1 после бурения шпуров 2 и закрепления в них анкеров 3 навешивают подхваты 4, толщина которых ю составляет не менее 3-5 см и определяет величину статического воздушного промежутка 10 между теплоизоляционным ограждением и породой. На подхваты 4 натягивают мелкоячеистую (2-3 см) сетку 15 8 (металлическую или ‘из синтетических материалов) и закрепляют с помощью опорных плиток 5 и гаек 6 на хвостовиках 7 анкеров. На сетку 8 наносят слой штукатурки из бетона( пенобетона,газобетона, 20 торкретбетона) .создающий монолитную скорлупу, в виде секций между смежными подхватами,внутри которых образуются изолированные воз душные промежутки 10.In mining 1 after drilling holes 2 and fixing anchors 3 in them, grabs 4 are hung, the thickness of which is at least 3-5 cm and determines the value of the static air gap 10 between the heat-insulating fence and the rock. On grips 4 they pull a fine-mesh (2-3 cm) mesh 15 8 (metal or ‘of synthetic materials) and fix it with support plates 5 and nuts 6 on the shanks of 7 anchors. A layer of concrete plaster (foam concrete, aerated concrete, 20 shotcrete) is applied to the mesh 8. It creates a monolithic shell, in the form of sections between adjacent pickups, inside which isolated air gaps 10 are formed.

Наличие теплоизоляционного огражде- 25 ния у анкерной крепи позволяет сочетать высокие теплоизоляционные свойства воздуха со значительной несущей способностью анкеров и омоноличенной сеткой, что при наличии любых вяжущих и заполнителей из местных материалов^ По следнее особенно важно для мелких роосыпных месторождений и нерудных ископаемых, разрабатываемых на Севере и Северо-В остоке.The presence of a heat-insulating fence at the anchor lining allows you to combine the high heat-insulating properties of air with the significant bearing capacity of the anchors and monolithic mesh, which in the presence of any binders and aggregates from local materials and North-East.

Предлагаемая крепь позволит снизить 'затраты на регулирование теплового ре- ’ жима в выработках Шахт и рудников, работающих в сложных геотермических ус— . ловиях.The proposed lining will reduce the "costs of regulating the thermal regime" in the mines of mines and mines operating in complex geothermal systems. fishing.

Claims

(54) ANCHOR MOUNT FOR MINING WORKS The invention relates to anchor lining of mine workings. Known anchor lining, including anchors with steel supporting tiles CIM. However, this support has a limited range of application in monolithic and weakly fissured rocks of medium and high strength, when the probability of rock failure in the intervals between the anchors is small. Closest to the proposed technical essence and the achieved result is anchor for mining, including anchors with grabs t. A disadvantage of the known lining is the lack of heat-insulating properties in connection with which it is impossible to use it in air supply mines of mining enterprises that develop mineral deposits by the subsea method in complex geothermal levels (permafrost and m natural genera). The purpose of the invention is to improve the ventilation mode in the mine workings by insulating above the surface of the rocks. . The goal is achieved by the fact that the anchor support for mine workings, including pickups with lugs, is provided with a thermally insulating fine mesh net fence with a plaster joint attached to the inner side of the tongs, with air gaps between the fence and the rock. FIG. 1 image development with anchor, cross-section; in fig. 2 - development, longitudinal section; in fig. 3 — node 1 in FIG. 2. Anchor bolts in excavation 1 with drills 2 that are drilled into the surrounding rocks consist of anchors 3, pickups 4. support plates 5, nuts 6 screwed onto the shanks of 7 anchors, and heat sinks of a fine mesh fence 8 with a layer of plaster 9, which fastened to the inner side of the supports 4, while air gaps 10 are formed between the fence and the rock. Anchoring is installed as follows. In the mine workout 1, after drilling holes 2 and securing the anchors 3 in them, weights 4, whose thickness is no less than 3-5 alts, determine the size of the static air line and 10 melee thermal fencing and rock. For grips 4, a finely cellular (2-3 cm) mesh 8 (metal or synthetic material) is tensioned and secured with the aid of backing tiles 5 and nuts 6 on the shanks of 7 anchors. A mesh of concrete (foam concrete, aerated concrete, shotcrete) is applied to the net 8, creating a monolithic scoop in the form of sections between adjacent upholsters, inside which insulated air gaps 1O are formed. The presence of heat insulating fencing at anchor lining allows to combine the high thermal insulation properties of air with a significant carrying capacity of anchors and a monolithic net, that if there are any stitching and aggregates taken from local materials, Po 14 14 developed in the North and North-East. The proposed support will reduce the cost of regulating the thermal distribution in the mines and mines working in complex geothermal conditions. catch it The formula of finding anchor lining for mine workings, including with pickups, characterized in that, in order to improve the ventilation regime in mine workings by means of thermal insulation of the surface of ropHbJx rocks, lining is provided. thermal insulating fencing of fine mesh with a layer of plaster attached to the inside of the grabs, with air gaps between the fencing and the rock. Sources of information taken into account in the examination 1.Baklashov I.V., Timofeev O, V.Constructions and calculation of supports and finishes. M., Nedra, 1979, p. 72-73,

2. Melnkkov N. I. Ankerna lining. M., Nedra, 1980, p. 204 (prototype).