SU883468A1

SU883468A1 - Annular roof support for horizontal and inclined mine workings

Info

Publication number: SU883468A1
Application number: SU802900197A
Authority: SU
Inventors: Юрий Иванович Бурчаков; Исак Аронович Моцкин; Виктор Борисович Кузнецов; Георгий Антонович Ревнивых; Иван Петрович Сумин
Original assignee: Московский Ордена Трудового Красного Знамени Горный Институт
Priority date: 1980-03-27
Filing date: 1980-03-27
Publication date: 1981-11-23

Description

Изобретение относится к горному делу, в частности к крепи капитальных и подготовительных горных выработок, проводимых по породам склонным к большим деформациям. ,The invention relates to mining, in particular to the lining of capital and preparatory mine workings conducted on rocks prone to large deformations. ,

Известна металлическая податливая Крепь из спецпрофиля для горизонтальных и наклонных горных выработок [1].Known metal compliant lining of special profiles for horizontal and inclined mines [1].

Недостатком такой крепи является недостаточная податливость и незначительная несущая способность.The disadvantage of this lining is the lack of compliance and low bearing capacity.

Известна также кольцевая крепь для горизонтальных и наклонных горных выработок, включающая сегменты, соединенные , между собой в кольцо [2].Ring support for horizontal and inclined mine workings is also known, including segments connected to each other in a ring [2].

Недостатками такой крепи в условиях больших смещений пород являются неравномерное срабатывание замков податливо—ι сти, создающее динамическую нагрузку, на крепь, незначительная податливость самой крепи (до 300 мм) и недостаточная ее устойчивость в условиях преимущественного распространения давления по нормали и напластованию вмещающих пород.The disadvantages of such supports in conditions of large displacements of rocks are the uneven operation of the compliant locks, which creates a dynamic load on the support, insignificant flexibility of the support itself (up to 300 mm) and its insufficient stability under conditions of the predominant pressure distribution along the normal and bedding of the enclosing rocks.

Цель изобретения - повышение надежности крепи путем увеличения несущей способности и податливости при уменьшении выработки с свету. <The purpose of the invention is to increase the reliability of the lining by increasing the bearing capacity and ductility while reducing production with light. <

Цель достигается гем, что кольцевая крепь дополнительно снабжена податливым кольцом, установленным эксцентрично внутри вышеупомянутого кольца и пружинными элементами, размещенными между кольцами.The goal is achieved by gem, that the annular lining is additionally provided with a compliant ring mounted eccentrically inside the aforementioned ring and spring elements placed between the rings.

При этом пружинные элементы выполнены в виде винтовых цилиндрических пружин, установленных в стаканы, которые прикреплены к сегментам посредством хомутов и болтовых соединений.In this case, the spring elements are made in the form of helical coil springs installed in glasses, which are attached to the segments by means of clamps and bolted joints.

На фиг. 1 изображена крепь, вид в плане; на фиг. 2 - узел I (замок податливости) на фиг. 1; на фиг. 3 - сечение А-А на фиг. 1.In FIG. 1 shows the lining, view in plan; in FIG. 2 - node I (compliance lock) in FIG. 1; in FIG. 3 is a section AA in FIG. 1.

Крепь состоит из двух эксцентрично расположенных колец: основного I и дополнительного 2, собранных из сегментов 3 и 4 посредством замка податливости 5, состоящего из хомута 6, скоб 7 и клинаThe lining consists of two eccentrically arranged rings: the main I and additional 2, assembled from segments 3 and 4 by means of a compliance lock 5, consisting of a clamp 6, brackets 7 and a wedge

8. Между кольцами расположены пружинные элементы 9-11, которые устанавливаются в стаканы 12 и 13, крепящиеся к сегментам хомутами 14, накладками 15 и гайками 16. _ ₅ 8. Between the rings are spring elements 9-11, which are installed in glasses 12 and 13, attached to the segments with clamps 14, pads 15 and nuts 16. _ ₅

После возведения крепи в выработке, в результате взаимодействия ее с окружающими породами, в начале начинает деформироваться основное кольцо I крепи. Затем происходит смещение его сегментов ₁₀3 в замках податливости 5, что вызывает деформацию пружинных элементов 9 11, которые передают давление на дополнительное кольцо 2. В· зависимости от силового воздействия на дополнительное кольцо оно будет перемещаться, занимая устойчивое положение с равномерно распределенной нагрузкой по всему контуру. Несущая способность предлагаемой крепи в несколько раз выше несущей способности _?0известной крепи.After the construction of the lining in the mine, as a result of its interaction with the surrounding rocks, at the beginning the main ring I of the lining begins to deform. Then there is a shift of its segments ₁₀ 3 in the locks of flexibility 5, which causes the deformation of the spring elements 9 11, which transfer pressure to the additional ring 2. Depending on the force acting on the additional ring, it will move, occupying a stable position with a uniformly distributed load throughout contour. The bearing capacity of the proposed lining is several times higher than the bearing capacity _{? 0 of the} known lining.

Применение податливой крепи вместо кольцевой податливой из спеппрофиля при проведении капитальных и подготовительных выработок по породам, склонным к большим₂₅смещениям, позволит значительно увеличить срок поддержания горных выработок в нормальном эксплуатационном состоянии.The use of compliant lining instead of the annular compliant of the seppprofile during capital and preparatory workings on rocks prone to large ₂₅ displacements will significantly increase the period of maintaining mine workings in normal operating condition.

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Claims

The invention relates to mining, in particular, to roof supports, fresh and round mining, carried out on rocks prone to large formations. A known metal malleability from special profiles for horizontal and inclined mine workings t. The disadvantage of this support is not sufficient ductility and a slight bearing capacity. Also known are ring brackets for horizontal and inclined mountain ramps, including segments that are interconnected in ring 2. The disadvantages of such brackets in conditions of large rock mixes are the unequal operation of the malleable-i locks, creating a dynamic load, on the bracket, is insignificant compliance of the lining itself (up to ZOO mm) and its lack of stability in the conditions of preferential distribution of pressure along the normal and surrounding host rocks. The purpose of the invention is to increase the reliability of the support of the put & l of increasing the carrying capacity and coherence with decreasing. This is achieved by the fact that the ring support is additionally equipped with a compliant ring installed eccentrically inside the aforementioned ring and spring elements placed between the rings. In this case, the spring elements are filled in the form of helical coil springs, installed in glasses, which are firmly fastened to the segments by means of clamps and bolted joints. FIG. 1 from Agena lining, type in the plan; in fig. 2 — node 1 (lock of compliance) in FIG. I; in fig. 3 is a section A-A in FIG. I. The support consists of two eccentrically arranged rings: main 1 and additional 2, assembled from segments 3 and 4 by means of compliance lock 5, consisting of a collar 6, brackets 7 and a wedge 3 8. Spring rings 9-11 are located between the rings, which installed in glasses 12 and 13, fastened to the joint by clamps 14, lining 15 and nuts 16. After the support has been erected, as a result of its interaction with the surrounding rocks, the main ring of the first support begins to deform. P That is 5, which causes the deformation of the spring elements 9 II, which transfer pressure to the additional ring 2. Depending on the POWER of the impact on the additional ring, it will move, occupying a stable position with a uniformly distributed load along the entire contour. The carrying capacity of the proposed support is several times higher than the carrying capacity of the known support. The use of ductile lining instead of kolztsevaya yielding of hurshtrofil when carrying out capital and preparatory workings for rocks prone to large displacements will significantly increase the period of maintenance of the mountain workings in normal operating condition 68 4 Formula of the invention Ring work for horizontal and inclined mountain workings including segments interconnected in a ring, characterized in that, in order to increase the reliability of the support by increasing the carrying capacity and flexibility while reducing enii vfabotki in light, it is further provided with taxes divy ring mounted eccentrically inside the aforesaid ring and spring elements arranged between the rings. 2. The ring support according to Clause I, which has been said to be t & l, that the spring elements are made in the form of helical coil springs, installed in glasses, which are attached to the septiles by means of clamps and bolted joints. Sources of information taken into account at 1. USSR authorship number 576419, cl. E 21 O 11/14, 1977.

2. Geleskul M.N. Metallichesk and zheleboTonna lining preparatory mountain training. M., Ugletekhizdat, 1958, p., 69, fig. 6 (prototype).