Shaft pneumatic bridging

FIELD: mining.

SUBSTANCE: shaft pneumatic bridging comprises pneumatic shell, suspension unit, protective jacket, manometric and air-supply hoses, device for filling, control of excessive air pressure and its ejection, mount cord. At the same time pneumatic shell is arranged in the form of soft axisymmetric toroidal shell of rectangular section, inside of which there is sleeve arranged, and along its axis there is pipe mounted in with diametre that is less compared to sleeve. Besides pneumatic shell is separated into two equal parts by means of perforated web, upper end and its side surfaces are coated by loose-fitting meshy web with lap towards working zone of rise heading, upper end is made of synthetic high-module fibre of high strength.

EFFECT: improved operational reliability of shaft pneumatic bridging.

4 dwg

 

The invention relates to mining and, in particular, to devices used as a safety overlap rising mining in the regeneration of their after drilling and repair during operation.

Known inflatable protective overlay "Umbrella-2"consisting of two air bellows, a host of suspension, protective covers, gauge and air supply hoses, control pressure gauge [1].

The disadvantage of this design is the unreliability of a protective case that, as a consequence, leads to damage of pneumobilia and lowering the excess air pressure in it, a weak node, suspension, and full overlap of the rising generation that turns it into a deadlock.

Closest to the technical essence and the achieved result is the construction of inflatable safety overlap "Umbrella-3", optionally containing polyethylene pipe installed along the axis of pneumobilia, fabric bonded with him flanges site suspension, stabilizer excess air pressure [2].

The disadvantage of this device is that the pair of the upper end design with a cylindrical portion on the protective case appear numerous injuries from collapsed pieces of the rock mass, and because of the lack of rigidity is proga instability and subsidence in her rising, the overshoot pieces of rock mass in the working area, as well as a high concentration of tension in the material pneumonology in flange connections it with a ventilation pipe.

The aim of the invention is to improve the operational reliability of the shaft pneumatic floor.

This goal is achieved by the fact that:

- design is assimetrico torus shell of rectangular cross-section, inside of which is sewn into the sleeve to accommodate the smaller diameter tubing;

- the shell is divided into two equal parts perforated panel;

- mesh fabric loosely surrounds the upper end of the shell and its lateral surface is overlap in the working area of the ore passes and together with protective case shell performs the function of a protector and additional protection of the working area of the ore passes;

- the upper end of the shell is made of high-modulus synthetic fibre very high strength.

The invention is illustrated by drawings, where figure 1 shows a design of mine pneumatic overlap, as in figure 2 - scheme of work of structural elements under conditions of dynamic loading.

Mine pneumatic overlap consists of a torus sleeve sheath (1)inside the sleeve (2). Place of fixation of the sleeve on the coat - (3) (shown in bold line).

In seredynwith shell mounted perforated partition wall (4) with holes (5).

The sleeve is inserted polyethylene pipe (6), pipe diameter and the cavity of the shell is chosen in accordance with the technical operating requirements.

The upper and lower ends of the sleeves wound up in a plastic tube and tightly fixed by bolts (7) and clamp (8).

The bolts are mounted earrings (9), the top - for connection to the hoisting rope of the winch, and the bottom for attaching to soft rope to retrieve mine pneumatic overlap of the ore passes after completion of the work.

In the upper end of the tube has four holes for groundwater discharge (10).

The membrane is covered with a protective cover (11)which is attached to the pipe using the clamp (8). Mesh fabric (12) is attached to the upper end of the pipe clamp (8).

The lower end of the shell is equipped with two fittings (13). One is connected with a hose to the test pressure gauge to measure gauge pressure in the shell. The second - to the system for filling the shell with air from the mine to the pneumatic system and control it overpressure in the process.

The upper end of the tube is equipped with protective cap (14). The shell is connected with a protective cover hinge (15).

Work with mine pneumatic overlap as follows:

the device is delivered to the lower or upper part of the rebels and the lifting Les is caustic rises or falls to the installation site;

- hoses are connected by purpose and design is filled with compressed air before reaching the operating pressure;

- checks the completeness of overlap itself, and then begin to implement the planned activities.

Thus the set of distinctive features is mine pneumatic slab provides sufficient stiffness to it, and elastic stability under dynamic loads caused by the collapsed pieces of the rock mass.

The dynamic interaction of the structure with collapsed pieces of the rock mass is represented on figb.

When confronted pieces of rock with the shell kinetic energy is converted to potential energy of deformation. The sustainability of pneumonology in the vertical plane (figa, b) satisfy the constraint P4and R3and perforated panel regulator positive air pressure in the shell.

In the horizontal plane pneumonology ensure its sustainability in the constraint P1and R2(figa, b).

Upon completion of elastic oscillations of pneumonology goes into a quiescent state (pigv).

Mesh fabric (12) and the protective cover (11) ensure the sustainability of the shell both in vertical and horizontal planes, by increasing the coefficient of friction in contact with the sides of robotki.

Sources of information

1. The magazine "safety in industry"), 1983 - No. 12 - P.31.

2. Ibid, p.32-33 (prototype).

Mine pneumatic overlay that contains pneumonology, site suspension, protective cover, gauge and air supply hoses, the device for filling, regulation of excess air pressure and ejection, polyethylene pipe and lifting and installation of the cable, characterized in that pneumonology made in the form of the axisymmetric torus sleeve shell of rectangular cross-section, within which is placed a sleeve, in which is mounted a tube smaller in comparison with the sleeve diameter, with pneumonology divided into two equal parts by a perforated panel, the top end of pneumonology and its lateral surface is covered with loose-fitting mesh fabric with an overlap in the working area rising generation and the upper end of pneumonology made of high-modulus synthetic fibers of high strength.



 

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