SU746104A1 - Method and apparatus for mineral excavation - Google Patents

Description

(54) METHOD FOR EXTRACTING THE USEFUL MINERALITY AND DEVICE FOR ITS IMPLEMENTATION

one

The invention relates to the mining industry and can be used for the extraction of minerals, mainly from low-thickness flat and inclined seams.

A known method of extracting a mineral by a shchekoburovaya machine, the peculiarity of which is the presence of a caterpillar drive for feeding the actuator, which interacts with its fists to cross-linking screw conveyors embedded in the crowns of gearboxes, which are kinematically connected to drive motors installed directly behind the drill bits. in the space between the screw sections and the upper wall of the well; devices for digging the interwell ridges, kinematically connected with the drive motor of sectional screw conveyors 1.

The disadvantages of this method of excavation are: the need to leave between-20 well pillars, the constant buildup and disassembly of the drill stem, as well as the time spent on removing the drill stem from the well.

There is also known a method of excavation of minerals, based on drilling a well, extracting a drill rod with simultaneous destruction of the array along the entire length of well 2.

An apparatus for carrying out the method includes a machine with a drill rod equipped with cutting elements and equipped with lanterns.

However, this method of excavation is characterized by the loss of the mineral during the excavation of the intercut bore.

The purpose of the invention is to reduce the loss of mineral resources during the mining of thin reservoirs.

This goal is achieved by the fact that the destruction of the array is carried out by the forced frontal movement of the drill rod, the train, and its return with the progressive transfer of it in the axial direction by the stroke of the drill carriage.

Claims (4)

The cutting elements of the device for carrying out the method are made in the form of cutting disks located along the length of the drill rod in increments of not more than the stroke of the drilling carriage of the machine, and the side supports of its lamps are movable in the radial direction. The device can be equipped with a mechanized tank {) with a protective shield. FIG. 1 shows a cross-section of the first well and the drill rod located in it; in fig. 2 - a cross-section of the first well and stirred, in it, mechanized movable lining with a protective shield; in fig. 3 is a cross-sectional view of a well with equipment placed therein after re-drilling and frontal delivery of a drill rod; in fig. 4 - view of the equipment in the plane of the reservoir after the frontal feed of the drill (notch discs). An apparatus for carrying out a method of excavating a mineral contains a machine (not shown in the drawings), a drilling rig 1 equipped with a mechanism for breaking down bore ridges 2, lights 3 with radially movable side supports 4, cutting disks 5 located along the length of the drill stem, although on one of its screws with a clamp not exceeding the stroke of the drilling carriage of the machine, as well as mechanized mobile lining 6, equipped with a protective shield 7, hydraulic legs 8, rigidly connected with a protective shield 7 and hydraulic wheels 9, -bound with the protective shield by hydraulic cylinders 10. The mobile mechanization b lining with the protective shield 7 is composed of separate sections interconnected by analogy with sections schnekovymi automatic locks. The supply of working fluid to the hydraulic legs and hydraulic cylinders of the mobile mechanized support is carried out from the oil station of the machine through hoses or pipelines that have discontinuous hydraulic couplings at the joints of the sections of the protective shield. Dual drilling rig 1 is used for the purpose of placing mechanized mobile lining 6 in the initially drilled well, as well as providing for the destruction of the massif with one screw (using cutting discs 5) during frontal drilling and the second mass transporting the disintegrated mass. 1, a borehole is drilled at a design depth (Fig. 1), and a mechanized mobile support 6 with a protective shield 7 is brought into the borehole and the hydraulic support 9 is pulled into the borehole. a protective shield 7 of hydraulic cylinders 10 (FIG. 2). The racks 8 and 9 are spaced between the soil and the roof, then the second well adjacent to the first is drilled. When extending the drill stand 1, the side supports 4 of the lights 3 on the side of the barrier shield 7 are advanced and fixed in a position that provides the necessary clearance between the shield shield 7 and the cutting discs 5, and on the opposite side of the support 4 are pushed to form the screw of the drill rod 1. At the front the position of the drill rod I is fed by means of powered support 6 to the bottom and the notch of the cutting discs 5 is made. The frontal movement of the drill rod 1 alternates with its reciprocating feed along the axis the stroke of the drilling carriage of the machine, while removing sickle chips throughout the depth of the well. The frontal movement of the drill rod 1 is carried out in a step-by-step manner using mechanized supports 6 and a protective shield 7. Hydraulic posts 8 are unloaded and the protective shield 7 together with hydraulic legs 8 is fed to the bottom by hydraulic cylinders 10. In the forward position, the hydraulic posts 8 are unstuck between soil and roof (see FIG. 3), and the hydraulics 9 are unloaded, pulled by hydrocyliidra 10 to the protective shield 7 and bulged between the soil and the roof. Then the pacing cycle is repeated. Simultaneously with the drill bit 1, the machine is moved by the same amount. In the device, the mechanized mobile roof support 6 simultaneously with the frontal movement of the drill rod 1 ensures the maintenance of the roof of the excavation, protecting it from debris, and a protective shield 7 - cleaning from the destroyed mineral. To eliminate the possibility of blockage, the development is fixed with a temporary lining or is filled up to the required depth immediately after moving the machine and the drill rod 1. When excavating mineral layers in this way, the mashina is installed in the mine in conditions of mines, and in open-cast mining - in TpaHiiiee or on the ledge. The use of this method makes it possible to virtually eliminate the loss of mineral and to increase the productivity of shnekoburovye machines by 1.5-2 times due to the reduction of unproductive operations to increase and disassemble the drill stem. Claims. 1. A method of extracting minerals based on drilling a well from a drill rod with simultaneous destruction of an array along the entire length of the well, characterized in that, in order to reduce mineral losses during mining of thin layers, the destruction of the array is carried out by forced frontal movement of the drill alternating with a reciprocating feed in the axial direction by the stroke of the drill carriage. 2. An apparatus for carrying out the method according to claim 1, comprising a machine with a drilling rod equipped with cutting elements and equipped with lanterns, characterized in that the cutting elements are made in the form of cutting disks located along the length of the drilling rod with a step not exceeding the stroke of the drilling carriage machine , and the side supports of its lamps are movable in the radial direction. 3. The device according to claim 2, characterized in that it is equipped with a mechanized movable lining with a protective shield. Information sources, taken into account in the examination 1. USSR author's certificate number 432280, cl. E 21 C 1/14, 1973. 2. USSR author's certificate No. 390259, cl. E 21 C 1/14, 1971 (prototype). 4.t.i °