RU2332570C1 - Controllable shield roof for mining of steep seams with mined-out space filling - Google Patents

Abstract

FIELD: mining industry.

SUBSTANCE: present invention relates to mining and may be used for mining steep seams using the hydraulic method, with mined-out space filling. A controllable shield roof for mining steep seams with mined-out space filling includes hoists, jacks, a receiving device, cables, on which pipe pieces with lugs for the attachment of metallic plates are installed; a water-protection element, and "aprons". The shield roof cables are located in the centre, as well as at the roof and floor of the seam, and strengthened by jacks. Metallic plates are pivotally connected to the cables, a water-protection element and "aprons" being attached above the plates at the seam roof and floor sides.

EFFECT: efficient working of steep seams, decreased water-protection element mounting and dismantling work, reliable insulation of mined-out space.

6 dwg

Description

The invention relates to the mining industry and can be used for mining steep formations hydraulically with the laying of the worked out space.

Known support fencing type proposed by Ing. P.I. Kokorin (D.A. Strelnikov, R.A. Biryukov. New in the development systems of the Prokopyevsky-Kiselevsky district of the Kuzbass: Ugletekhizdat, M., 1954. P.56), the essence of which is that the face is protected from the developed space is made using flexible overlap, which is a flat metal mesh of ropes. At the same time, there is no support for supporting the roof in the face. The roof is supported only on the coal mass and, as the seam is mined, collapses freely and, together with the collapsed rocks passing from the upper horizon, fills the worked-out space.

Tests have shown that when working with roof collapse, the overlap does not provide a reliable separation of the face from the worked out space, especially in the upper part of the face. Collapsed rocks fell under the net and clogged broken coal. In addition, the collapsed rocks caused the overlap to creep over the fall, which led to distortions and deformations of the farms.

Suspended protective supports PSK-1 and PSK-2 are known for the design of Sibgiprogormash (Korzyukov E.K. Direction of designing new mobile supports and aggregates for the development of powerful and medium capacity formations, in the book: Best practices and prospects for the use of mobile shield supports. Gosgortekhizdat, 1962), consisting of separate metal sections connected by ropes. The lining was kept from sliding down by powerful hydraulic tractors, which is a drawback that has been partially eliminated in another shield cover (USSR AS - No. 1737119; Declared 07.05.90: Published on 05.30.92, Bull. No. 20), where the development of subfloors is underway with the laying of the worked out space, while under the flexible overlap and the stowage array of the upper sub-floor, there is a ventilation drift and laid on the soil of the last section of the waterproof element, and the flexible ceiling is mounted on top of the waterproof element, and after coal excavation, the length of the entry into the storey To the drift of the worked-out sub-floor, the sections of the waterproofing element are removed and mounted again on the basis of the ventilation drift of the lower sub-floor prepared for excavation.

The disadvantages of paneling are the following: a large amount of installation and dismantling work on the waterproof element; unreliable design of a waterproof element that is not controlled by reservoir power.

The objective of the invention is the creation of such a shield overlap, which would effectively work out steep layers in a hydraulic manner with the laying of the worked out space.

To do this, in the design of the controlled shield floor for working out steep seams with the laying of the worked out space, including winches, jacks, a receiving device, ropes on which pipe trims with eyes for fixing metal plates are installed, as well as a waterproof element and "aprons", shield floor ropes are located in the center, as well as near the roof and the bed of the formation, and are reinforced with jacks, moreover, metal plates are pivotally attached to the ropes, and a water-proof element is fixed over these plates ent and “aprons” from the side of the roof and soil of the formation, which allow to effectively separate the worked-out space from the worker while controlling the overlap according to the thickness of the formation.

The device is illustrated by drawings, where in Fig.1 shows a diagram of the face and controlled shield overlap in operation; figure 2 - section aa in figure 1; figure 3 is a section bB in figure 1; figure 4 - frame shield panel; figure 5 - pipe trimming installed on the frame (ropes); 6 is a controlled overlap assembly.

Controlled panel cover 1 consists of a receiving device 2, on which a hydraulic monitor 3 is installed to destroy the coal mass. The receiving device is installed on the conveyor drift 4 and provides transportation of pulp to the grooves 5.

To the receiving device from the side of the mined-out space, the lower part of the controlled shield floor is hinged. The controlled shield overlap consists of ropes 6 connected to the frame and pipe pieces 7 with lugs 8, to which metal plates 9 are articulated. A water protection element 10 consisting of rubberized tapes articulated to each other is mounted on top of the metal plates. On the side of the roof and the formation soil, “aprons” are also hinged to the pipe scraps 11. On the ventilation drift 12, the ropes are attached to the jacks 13, 14, 15, and those, in turn, through the spacer 16 to the winch 17.

The spacer device provides reliable beam spacing between the roof and the soil of the formation and is pulled by a winch after coal extraction with a hydraulic monitor in the entry. To ventilate the face due to the mine depression, the ventilation and conveyor drifts, connected through a certain distance, are connected by the furnace 18. The tab into the worked-out space is fed through pipes 19.

The extraction of coal and the management of the shield slab is as follows. With the help of a hydraulic monitor 3 mounted on the receiving device 2, the coal mass is destroyed. At the same time, the rock mass beaten off by the hydraulic monitor falls onto the receiving device and, together with water, is transported to the grooves 5, and then along the conveyor drift 4 to the pulp-discharge furnace. As the coal is mined, the shield 1 using a winch 17 mounted on the ventilation drift 12, and the receiving device, moved with a jack, moves to the bottom. For shield paneling through pipes 19 from the ventilation drift serves bookmark. Due to the presence of metal pipes 7 and metal plates 9 attached with eyes 8 and fingers, the jet of a hydraulic monitor does not destroy the shield overlap. To prevent water from entering the worked out space and breaking the bookmark into the working area, a water-protective element 10 is installed on top of the shield slab, and “aprons” 11 from the side of the soil and the roof of the formation.

Shield overlap control in terms of formation thickness is carried out when the spacer device is pushed between the roof and soil using ropes 6 and jacks 13, 14, 15, and to move the overlap towards the formation roof, a rope is pulled using a jack 13 located near the formation soil, and vice versa , to move the overlap towards the soil of the formation, a rope is pulled using a jack 15 located at the top of the formation. Due to the articulation of metal plates and pipe scraps, the overlap with the help of ropes is regulated by the thickness of the formation, and also moves to the roof or soil. Thus, the controlled shield overlap provides reliable isolation of the worked out space filled with filling material and the working area of the jet of the jet monitor.

Claims (1)

Managed panel cover for working out steep seams with laying of mined-out space, including winches, jacks, receiving device, ropes, on which pipe trims with eyelets for fixing metal plates are installed, as well as a water-proof element and "aprons", characterized in that the panel cover ropes located in the center, as well as near the roof and the soil of the formation, and reinforced with jacks, with metal plates pivotally attached to the ropes, and on top of these plates - a waterproof element and “aprons” from the roof and formation soil.

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