SU968433A1

SU968433A1 - Frame-board ceiling

Info

Publication number: SU968433A1
Application number: SU813254321A
Authority: SU
Inventors: Юрий Евлампиевич Борисов; Николай Захарович Дьяченко; Василий Дмитриевич Голобоков; Михаил Васильевич Пупков; Леонид Васильевич Зворыгин; Василий Иванович Долголюк
Original assignee: Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Угольный Институт
Priority date: 1981-03-04
Filing date: 1981-03-04
Publication date: 1982-10-23

Description

Изобретение относитс к горнодобывающей промышленности и кюжет быть использовано при разработке мощных крутых пластов щитовой системой .The invention relates to the mining industry and can be used in the development of powerful steep seams with a shield system.

Известна щитова дл отработки крутых пластов, выполненна из каркаса в виде решётчатой фермд и устройств дл распора каркаса между кровлей и почвой, а также дл перемещени крепи 11.Famous shields for mining steep seams, made of a frame in the form of lattice fermd and devices for spreading the frame between the roof and the soil, as well as to move the lining 11.

Недостатком щитовой крепи вл етс сложность конструкции, сложность управлени крепью, а при слабоустойчивых породах почвы и кровли така конструкци вл етс неприемлемой дл отработки крутых пластов.The disadvantage of shield support is the complexity of the design, the complexity of the control of the support, and with poorly stable soil and roof rocks such a structure is unacceptable for working steep seams.

Наиболее близким к изобретению вл етс щитовое перекрытие дл отработки мощных крутых пластов угл , состо щее из соединенных между собой гибкими св з ми несущих секций, включающих основание в виде каркасаClosest to the invention is a shield slab for mining powerful steep coal seams consisting of flexible sections of interconnected carrier sections, including the base in the form of a frame

пр моугольно формы 2. Jaright mougolno forms 2. Ja

Недостатком устройства вл етс то, что перекрытие размером более 4М вкрест простирани пласта обладает недостаточной несущей способностью при большом расходе металла.The drawback of the device is that the overlap of more than 4 M across the strike of the formation has an insufficient bearing capacity with a large consumption of metal.

Целью изобретени вл етс повышение несущей способности перекрыти .The aim of the invention is to increase the carrying capacity of the overlap.

Поставленна цель достигаетс тем, что кажда секци снабжена размещенной в центре основани стойкой и ребрами, шарнирно соединенными со стойкой и основанием с образованием пр моугольной пирамиды, обращенной верваиной в сторону обрушенного про10 странства, при этом ребра в плоскости основани ст нуты стальными гибкими элементами, которые соединены со стойками. Кроме того, боковые грани пира14иды выполнены в виде метал15 лического гибкого листа и шарнирно соединены со стойкой.The goal is achieved by the fact that each section is provided with a rack located in the center of the base and ribs pivotally connected to the rack and base with the formation of a rectangular pyramid turned with a vervain towards the collapsed space, while the ribs in the base plane are steel flexible elements that connected to racks. In addition, the lateral faces of the pyramids 14 are made in the form of a metal15 flexible sheet and pivotally connected to the stand.

На фиг. 1 изображена секци щита, план; на фиг. 2 - то же, вид сбоку по простиранию; на фиг. 3 - две FIG. 1 shows a shield section, a plan; in fig. 2 - the same, side view along strike; in fig. 3 - two

20 смежные соединенные между собой секции перекрыти .20 adjacent interconnected sections overlap.

Щитовое перекрытие дп отработки крутых пластов угл сострит из отдельных соединенных между собой не25 сущих секций 1.Shield overlap dp of working out steep coal seams from separate interconnected empty sections 1.

Кажда несуща секци (блок) 1 щитового перекрыти выполнена в виде пр моугольной пирамиды, обращенной вершиной в сторону обрушенных пород. Each supporting section (block) 1 of the shield panel is made in the form of a rectangular pyramid, with its apex toward the collapsed rocks.

Claims

The 30 ribs 2 of the pyramid and its perimeter, consisting of 3 longitudinal and transverse 4 beams, are made of steel profiles and in the plane of the base are steel flexible elements 5. (ropes, plates, etc.) that are connected to the central pillar 6 set along the height of the pyramid. The side faces / pyramids are made in the form of a metal flexible sheet 7, over which a metal mesh is laid in two or three rows. The middle parts of the longitudinal beams of the 3 bases of the pyramid are interconnected and the central pillar with additional ribs 8. Section 1 of the shield cover are interconnected by flexible connections 9. The ribs 2 of the pyramids at its top are pivotally connected to the central pillar b. The coal excavation under the shield slab is performed in two or three steps, depending on the thickness of the reservoir, and consists in taking the passage, widening it, and landing, like in the case of conventional shields with drilling and blasting coal. With such a panel overlap construction, the length of the supporting girder elements (pyramid ribs) working for transverse bending is almost halved (the stand serves as an intermediate support), and the lower in c (flexible elements 5) working tension for stretching is made of high strength material. All this leads to a sharp reduction in metal consumption compared with the conventional girder shield design, and with the same metal consumption - to a significant increase in the holding capacity. The side faces of the pyramid, made in the form of a metal flexible sheet, on top of which the metal mesh is laid, also stretch, which is much more economical than beam structures. The use of the invention will make it possible to drastically reduce the consumption of scarce timber, often for the manufacture of the knurser used in panel ceilings. Claim 1. Shield cover for working out powerful steep coal seams consisting of flexible sections of interconnected carrier sections, including a base in the form of a rectangular framework, characterized in that, in order to increase the bearing capacity of the slab, each the section is provided with a strut located in the center of the base and ribs pivotally connected to the strut and base with the formation of a rectangular pyramid with its apex facing the collapsed space, while the ribs are in the base plane of the station chickpeas steel flexible elements, which are connected to the uprights. 2. The overlap of claim 1, dated from the fact that the lateral faces of the pyramid are made in the form of a metal flexible sheet and pivotally connected to the stand. Sources of information taken into account in the examination 1. The author's certificate of the USSR, cl. E 21 D 19/02, 1950.

2. USSR author's certificate number 106952, cl. is 21 D 19/02, 1956 (prototype) ..