SU787663A1

SU787663A1 - Pneumatic form for underground work

Info

Publication number: SU787663A1
Application number: SU711726037A
Authority: SU
Inventors: Эрнольд Элявич Нильва; Борис Михайлович Усан-Подгорнов; Ян Михайлович Шмуйлович; Алексей Габлоевич Цомартов; Виктор Викторович Давыдов
Original assignee: Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Институт Горного Дела Им. А.А.Скочинского
Priority date: 1971-12-20
Filing date: 1971-12-20
Publication date: 1980-12-15

Description

Изобретение относится к креплению горных выработок монолитным бетоном, а именно к устройству пневматической опалубки для подземных работ при возведении бетонной крепи.The invention relates to the fastening of mine workings in monolithic concrete, and in particular to a device for pneumatic formwork for underground work in the construction of concrete lining.

Известна пневматическая опалубка для ⁵подземных работ, включающая формующую и поддерживающую части и упругие элементы из прямоугольных пластин, изогнутых по контуру опалубки и опирающихся на слой из шлангообразных надувных эле-¹⁰ментов, которые смонтированы на жестком корпусе поддерживающей части £1}.Known pneumatic formwork ⁵ for underground mining, comprising a shaping and supporting portion and the elastic pieces of rectangular plates of curved contour formwork and based on a layer of the inflatable element shlangoobraznyh cops ¹⁰ which are mounted on the hard casing supporting portion £ 1}.

Однако такая опалубка не рассчитана на формование тампонажных отверстий в крепи при ее возведении.However, such formwork is not designed to form grouting holes in the lining during its construction.

Известна также другая пневматическая опалубка для подземных работ, включающая внешнюю и внутренюю оболочки из эластичного материала, трубчатый надув- „ ной каркас жесткости, отверстия для подачи бетона и регулирующую арматуру t2].Another pneumatic formwork for underground work is also known, including the outer and inner shells of elastic material, a tubular inflatable stiffening frame, openings for concrete supply and control fittings t2].

Однако при возведении крепи посредст.' вом такой опалубки приходится выполнять трудоемкую работу по разделке тампонажных отверстий в затвердевшем бетоне крепи.However, during the construction of the lining means. ' In the case of such formwork, it is necessary to perform the laborious work of cutting grouting holes in the hardened concrete lining.

Цель изобретения — снижение трудоемкости по созданию тампонажных отверстий.The purpose of the invention is to reduce the complexity of creating grouting holes.

Цель достигается тем, что внешняя оболочка снабжена полыми установочными пальцами, полость которых сообщена с полостью опалубки.The goal is achieved in that the outer shell is provided with hollow mounting fingers, the cavity of which is communicated with the cavity of the formwork.

На фиг.1 изображена опалубка, общий вид;фиг. 2-положение опалубки в момент бетонирования;фиг.3-то же, в момент распалубки.Figure 1 shows the formwork, a General view; 2-position of the formwork at the time of concreting; figure 3 is the same at the time of formwork.

Пневматическая опалубка включает внутреннюю 1 и внешнюю 2 оболочки из эластичного материала, трубчатый надувной каркас 3 жесткости, полые установочные пальцы 4, полость которых сообщена с полостью опалубки, отверстия 5 для подачи бетона и реулируюшую арматуру из ниппельного устройства 6 и автоматического клапана-регулятора 7.Pneumatic formwork includes inner 1 and outer 2 shells made of elastic material, a tubular inflatable frame 3 of stiffness, hollow mounting pins 4, the cavity of which is in communication with the formwork cavity, holes 5 for supplying concrete and regulating fittings from the nipple device 6 and the automatic control valve 7.

Пневматическую опалубку используют следующим образом.Pneumatic formwork is used as follows.

В горной выработке в месте ее крепления размещают пневматическую опалубку в сложенном виде. Затем через ниппель-5 ное устройство 6 нагнетают жатый воздух, который заполняет внутреннее пространство опалубки между ее внутренней 1 и внешней 2 оболочками, трубчатый надувной каркас 3 жесткости и полости устало- ¹⁰вочных пальцев 4. В результате опалубка принимает заданную форму и установочными пальцами распирается в стенки выработки. После этого через отверстия 5 подают за опалубку с помощью бетоно- 15 насоса бетонную смесь и возводят крепь. При возведении крепи в ней одновременно посредством пальцев 4 создаются тампонажные отверстия 8. После окончания возведения крепи и необходимой вы- ²⁰держки бетона производят распалубку. При распалубке сжатый воздух через нипельное устройство 6 выпускают, трубчатый надувной каркас 3 теряет свою жесткость и внешняя оболочка вместе с уста- ²⁵ новочными пальцами 4 отстает от бетона, опалубка складывается и транспортируется к месту новой установки. Затем через созданные в крепи отверстия 8 производят тампонаж закрепного пространства.In the mining at the place of its attachment, pneumatic formwork is folded. Then, through the nipple 5 Noe device 6 Compressed air is injected, which fills the interior space between the inner casing 1 and the outer shell 2, a tubular inflatable stiffening frame 3 and the cavity ¹⁰ ustalo- paid-finger 4. As a result, shuttering takes a predetermined shape and mounting fingers arching into the walls of the mine. After that, through the holes 5, the concrete mixture is fed for the formwork using the concrete pump 15 and the support is erected. When erecting the support frame therein simultaneously by fingers 4 are plugging the holes 8. After closure of lining erection and ²⁰ have to calculate Derzhko produce concrete stripping. When compressed air through the demolding apparatus nipelnoe 6 release, inflatable tubular frame 3 loses its rigidity and outer shell ²⁵ together with the heating novochnymi fingers 4 behind concrete formwork is folded and transported to the new setting. Then, through the holes 8 created in the lining, cementing of the fixing space is performed.

Claims

The invention relates to the crepeing of the mine workings with olitnom bets "ohm", namely to the device of pneumatic formwork for underground work during the erection of concrete lining. Known pneumatic formwork for underground work, including the forming and supporting parts and elastic elements of rectangular plates bent along the contour of the formwork and resting on a layer of hose-like inflatable elements that are mounted on the rigid body of the supporting part 1. However, such formwork is not designed to form plug holes in the lining during its construction. Another pneumatic formwork for underground works is also known, which includes an outer and an inner sheath of elastic material, a tubular inflatable stiffening cage, openings for feeding concrete and regulating reinforcement 2. However, during the erection of the support, it is not. At the time of such a formwork, it is necessary to carry out laborious work on cutting cement holes in the hardened concrete lining. The purpose of the invention is to reduce the complexity of the creation of cement holes. The goal is achieved by the fact that the outer shell is provided with hollow adjusting fingers, the cavity of which is in communication with the cavity of the formwork. FIG. Fig. 1 shows the formwork, general view; Fig. 2: the position of the formwork at the time of betting; fng. Pneumatic formwork includes 1 shredding and 2 outer shells of elastic material, a tubular inflatable carcass 3 stiffness, hollow mounting fingers 4, the cavity of which is connected to the cavity of the formwork, 5 holes for supplying concrete and rebar valves from the nipple device 6 and an automatic valve torus 7. 37 Pneumatic formwork is used as follows. In the mine workings, in the place of its attachment, pneumatic formwork is placed in folded form. Then, through the nipple device 6, the compressed air is injected, which fills the inner space of the formwork between its inner 1 and outer 2 shells, tubular nadu & The stiffness frame 3 and the cavities of the mounting fingers 4. As a result, the formwork assumes a predetermined shape and spreads with the installation fingers into the walls of the excavation. After that, through the holes 5, the concrete mix is fed into the formwork with the help of a concrete pump and the lining is erected. During the erection of the lining in it, simultaneously, using the fingers 4, the cementing holes 8 are created. After the erection of the erection of the lining and the necessary holding, the betsma are dismantled. When dismantling, compressed air through the nipple device 6 is released, the tubular inflatable frame 3 loses its rigidity and the outer shell together with the installation fingers 4 lags behind the concrete, the formwork is folded and transported {) to the site of the new installation. Then, through fixing holes 8, the fixing space is tamped. Pneumatic formwork for underground work, including outer and inner shells of elastic material, tubular inflatable frame stiffness, holes for the supply of concrete and control valves, characterized in that, in order to reduce the complexity of creating tamping holes, the outer sheath is equipped with hollow mounting fingers, the cavity of which is communicated with the cavity of the formwork. Sources of information taken into account in the examination 1. Author's testimony of USSR № 282390, cl. E 21 D 11/10, 1969.

2. O. Frey and R. Trostepe. Pneumatic building structures. M., stroiizdat, 1966, p.66 (prototype).

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