SU688631A1

SU688631A1 - Monolithic concrete roof support

Info

Publication number: SU688631A1
Application number: SU782615169A
Authority: SU
Inventors: Владимир Иванович Бунин; Лилия Александровна Мирошникова
Original assignee: Кузнецкий Научно-Исследовательский Институт Строительства Угольных И Горнорудных Предприятий
Priority date: 1978-05-12
Filing date: 1978-05-12
Publication date: 1979-09-30

Description

1one

Изобретение относитс к области креплени подземных горных выработок.The invention relates to the field of attachment of underground mines.

Известна монолитна бетонна крепь, включающа свод, стены с основанием, заглубленным в почву выработки 1.Known monolithic concrete lining, including the arch, the wall with the base, recessed into the soil of development 1.

Недостатком такой крепи вл етс необходимость разработки канав под основание стен, что повышает трудоемкость работ по возведению крепи.The disadvantage of such lining is the need to develop trenches under the base of the walls, which increases the complexity of the work on the construction of lining.

Известна также друга монолитна бетонна крепь, включающа свод, стены с основанием, установленны.м на почву без заглублени , и арматуру со стержнем, установленным в пробуренных в породе шпурах 2.Another well-known monolithic concrete lining, including a roof, walls with a base, installed on the soil without penetration, and reinforcement with a rod installed in the hole 2 drilled in the rock, is also known.

Недостатком такой крепи вл етс незначительное сопротивление боковому давлению пород, снижающее надежность ее работы.The disadvantage of this support is a slight resistance to lateral pressure of rocks, which reduces the reliability of its operation.

Целью изобретени вл етс повышение надежности работы крепи в породах, оказывающих боковое давление.The aim of the invention is to increase the reliability of the support in the rocks that exert lateral pressure.

Это достигаетс тем, что стержни установлены в почве перпендикул рно торцу основани стен.This is achieved by the fact that the rods are installed in the soil perpendicular to the end of the base of the walls.

На фиг. 1 изображена предлагаема крепь в поперечном сеченпп выработкп; на фиг. 2 - то же, в продольном сечении выработки .FIG. 1 shows the proposed lining in cross section; in fig. 2 - the same in the longitudinal section of production.

Монолитна бетонна крепь содержит свод 1, стены 2 с основанием 3, установленным на почву выработки без заглублени . Основание 3 стен содержит арматуру, соединенную с вертикальными стержн ми 4, верхние концы которых св заны продольными стержн ми 5 арматуры, а нижние - заглублены в щпуры 6, пробуренные в почве выработки. Диаметр стержней 4, установленных перпендикул рно торцу основани 3 стен, исход из расчетов, принимаетс равным 25-40 мм, рассто ние между стержн ми в продольном направлении выработки-200-4UO мм, глубина шпуров- 200-300 мм.Monolithic concrete lining contains vault 1, walls 2 with base 3 installed on the working soil without deepening. The base 3 of the walls contains reinforcement connected to the vertical rods 4, the upper ends of which are connected by longitudinal rods 5 of the reinforcement, and the lower ones are recessed into the drill holes 6 drilled in the excavation soil. The diameter of the rods 4, installed perpendicular to the end face of the 3 walls, is calculated from 25-40 mm, the distance between the rods in the longitudinal direction of generation is 200-4UO mm, the depth of the holes is 200-300 mm.

В других вариантах выполнени крепь может иметь также арматуру в стенах 2 и своде 1, а также стержни, заглубленные в боковые породы.In other embodiments, the support may also have reinforcement in the walls 2 and roof 1, as well as rods recessed into the side rocks.

Крепь возвод т следующим образом.The support was erected as follows.

Claims

Along the sides, the workings clean the soil, drill holes 6 in it in the middle line of the base 3 walls to the depth of the rods 4. Install rods 4 in the holes 6 so that they protrude 200-250 mm above the soil and fix them to rods x 4 with The sides of the lateral workings of the longitudinal rods 5, at least one of the heights of its abrasion 4, install the formwork and lay the concrete. The rods 4 in the bore-holes 6 can also be installed with the filling of the holes 6 with cement mortar. After hardening of concrete and stripping, the lining basically works in the same way as the well-known lining with a recessed base of the walls. At the same time, the lateral pressure, which could have caused mixing, encapsulating the walls to the inside of the mine, is perceived by the rods 4, which are buried in the soil and work on bending and shearing. Formula of the invention Monolithic concrete lining for mine workings, including vault, walls with a base installed on the soil without deepening, and reinforcement with rods installed in boreholes drilled in the rock, in order to improve the reliability of the lining in rocks, exerting lateral pressure, the rods are mounted in the soil perpendicular to the butt of the base of the walls. Sources of information taken into account in the examination 1. M. Geleskul and B. Usan-Podgornov. M. Maintenance of mine workings. M., "Nedra, 1973, p. 57-59.

2. Pokrovsky N. P. Technologists of the construction of underground structures and mines. M., “Nedra, 1977, p. 162-164.

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