SU1262044A1 - Apparatus for drilling ascending openings in steep outburst-hazardous beds - Google Patents

Abstract

1. INSTALLATION FOR DRILLING RISING EMISSIONS ON TIGHT EMERGENCY LAYERS, including a drilling machine, becoming hollow rods with a jetting drill head and a jetting extender, so as to prevent sudden carbon emissions by maintaining the working width of a piece. It is equipped with a shield, hinged on the gate of the Shtang, two hydraulic cylinders with plungers mounted on diametrically opposite ends of the shield, and screens connected by plungers, and m. the cylinders are hydraulically connected to the cavity of the valve and the expander axis is directed to the screens with the plungers extended. 2. Installation according to claim 1, characterized in that the front edge of each screen is made in the form of a line of intersection of the surface of rotation of the expander axis with a flat bone parallel to the stand of rods and about (L running through the edge of the screen when the plunger is extended.

Description

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4 The invention relates to the mining industry and can be used for hydraulic extraction of coal without the presence of people in the bottomhole, especially on thin and very thin outburst formations of high steepness. The purpose of the invention is to prevent sudden coal emissions by keeping the width of the generation constant throughout its length. FIG. 1 shows the installation, a general view (screens pushed up); in fig. 2 - shield at the time of expansion (screens are retracted); in fig. 3 shows section A-A in FIG. one; in fig. 4 is a view B in FIG. 2. Installation for drilling of rising workings on steep outburst formations consists of a drilling machine 1, becoming 2 hollow rods, a hydraulic drilling head 3, support lights 4, a hydraulic monitoring section 5, shield 6 from the screen Drilling machine 1 is fixed in accumulating output mounting 1 P1Tang and its axial movement of the machine 1 is equipped with hydraulic cylinders 9 feed, and to give the drill head 3 and the expander 5 a reciprocating movement is "(clearance 10. The water supply to the drill head 3 and the diverter 5 Sewn on the 2 pgang station and on the flexible hose P from the high-pressure pumps (not curved). At the feed stand the shield 6 is hinged, the axis of the pad. a 5 intersects with the plane of the screens 7 when they are in the extreme extended position. Pit 6 there are windows 12. The hinge 13 provides for the transfer of axial forces to the shield 6 and the possibility of free rotation in it of the rod 2. The shield 6 on the side diametrically opposite sides is equipped with two screens 7 movably located in the longitudinal guide grooves 14 fixed on the shield 6. TO zhdy screen 7 is pivotally connected to ram 15 of hydraulic cylinder 16 whose body is also pivotally connected to the shield 6. The cavities of hydraulic cylinders 16, such as by flexible hoses 17 fluidically coupled with the channel 2 1OLOGO stava P1tang. When the (front) position of the screens 7 is extended, the axis of the expander 5 intersects with the screens 7, and when the position is retracted, it is outside their contours. The front edge 18 of each screen 7 is made in the form of a line of intersection of the rotational surface of the axis of the expander 5 with a plane parallel to the set of 2 rods and passing through the edge 18 of the screen 7 with the plunger 15 retracted. .i-l with: 1 in 1 way. The water supplied by the pumps through the flexible hose 11, the rotator 10 and the hollow rod 2 boom, goes to the hydraulic drilling head 3 and flows out of its nozzles in the form of high-pressure jets. After the drilling head 3 is given a reciprocating movement from the rotator 10 and at the same time feeding it to the bottom by a hydraulic cylinder 9 of the feed, high-pressure jets, once the coal massif is crushed, an advance well is drilled. In this case, the support lights 4 support by becoming 2 rods above the soil of the formation and contribute to directional drilling. The leading well unloads the outburst-hazardous formation along the route of the development and determines its direction. After the formation of an advance well, a jetting reamer 5 comes into operation, the pressure jet of which expands the advance well when rotating the rod 2. When high-pressure water is supplied at a set of 2 rods, pressurized water flows through the flexible sleeves 17 into the hydraulic cylinders 16 and, acting on the plungers 5, pushes them and holds the screens 7 in the forward extended position at which the jet of the expander 5 intersects with them. When applying the 2 rods to the bottom, the axial force is transmitted through the pistol 13 to the shield 6, bringing it all the way to the bottom. In this case, the screens 7, resting on the bottom edge of the front edge 18, remain in place. At the same time, overcoming the force of the hydraulic cylinders 16 while moving the shield 6 to the face, the plungers 15 are moved to the rearmost position, after which the spreader 5 begins to remove new coal chips from the bottom of the mine (Fig. 2). When the expander jet from one of the sides reaches the screen and begins to destroy the coal array located behind it, under pressure m. The plungers 15 push the screen upwards and cut off the jet of the expander 5 from the coal array when the screen moves to the uppermost position, thus eliminating the further erosion of the wall of production. The formation of a flat surface of the production wall is also facilitated by the implementation of the leading edge 18 of each screen 7 in the form of a line of intersection of the rotational surface of the axis of the expander 5 with a plane parallel to the rods and passing through the edge of the screen 7 when the plunger 15 is extended. Formed during hydraulic fracture of a coal-water mixture from the leading well and from the bottom of the furnace enters the windows 12 of the shield 6, flows through the soil of the mine and on the underlying horizon enters the pulp-receiver or the mine trolley. At the end of the deepening of the furnace for a length of 3A

one rod made building up without the presence of people in the face. The fixing of the bar with the rod and continue the deepening of the wall of the furnace is carried out as needed. The furnace is drilled remotely after stopping the drilling.

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Claims (2)

1. PLANT FOR DRILLING RISING PRODUCTS ON STEEP EMISSIONS, including a drilling rig, becoming hollow rods with a hydraulic drill head and hydraulic monitor expander, characterized in that, in order to prevent sudden coal emissions by maintaining the width of the output, it is constant throughout equipped with a shield pivotally mounted on the boom, two hydraulic cylinders with plungers mounted on diametrically opposite ends of the shield, and shields connected by plungers, and hydrocylin ry hydraulically connected with the cavity stava bars, and the expander axis is directed to the screens at the nominated plungers. 2. Installation according to π. 1, characterized in that the front edge of each screen is made in the form of a line of intersection of the surface of rotation of the axis of the expander with a plane parallel to the rod position and passing through the edge of the screen with the plunger extended. (/) 1262044 A1