RU77905U1 - METAL FRAME MOLTAGE FASTENER "KTsLO" - Google Patents

Abstract

The utility model relates to the mining industry and can be used for fixing mine workings in various, including difficult mining and geological conditions, as well as to maintain the mine workings on the mates of drift-lava when removing the supports for supporting (moving) the face conveyor; the lining comprises an upper (1) made with a horizontal rectilinear middle section conjugated on two sides with curved end sections through curved transitional sections, struts (2) made with curved upper end sections, and compliance nodes (3) formed by lap-shaped curved ends end sections of the upper (1) and curved upper end sections of the uprights (2) made with the same radius (R ₁ ) of curvature and fastened together by locks (4); according to the utility model, the racks (2) along the entire length are made curved with a radius of curvature corresponding to the radius (R ₁ ) of the curvature of their curved upper end sections, which is selected by the formula:

where: K ₁ - coefficient of optimization of the curvature of the curved end sections of the upper (1) and curved racks (2),

K ₁ = 0.87-1.30

In - the distance between the curved racks (2) at the sole of the lining, mm,

while the radius (R ₂ ) of the curvature of the curved transitional sections of the upper (1) is selected by the formula:

where: K ₂ - coefficient of optimization of curvature of curved transitional sections of the upper (1),

K ₂ = 0.08-0.15;

In - the distance between the curved racks (2) at the sole of the lining, mm;

the height (N) of the lining is selected by the formula:

where: K ₃ - coefficient of optimization of the lining height,

K ₃ = 0.56-0.78;

In - the distance between the curved racks (2) at the sole of the lining, mm;

the length (L ₁ ) of the horizontal rectilinear middle section of the upper (1) is selected by the formula:

where: K ₄ - coefficient of optimization of the length of the horizontal rectilinear middle section of the upper (1);

K ₄ = 0.34-0.54;

In - the distance between the curved racks (2) at the sole of the lining, mm;

and the length (L ₂ ) of the curved racks (2) is selected by the formula:

where: K ₅ - coefficient of optimization of the length of the curved racks (2), K ₅ = 0.59-0.74;

In - the distance between the curved racks (2) at the sole of the lining, mm;

the technical result, which is achieved by using the improved lining, is to increase its internal space for convenient placement of technological equipment while ensuring high load-bearing capacity and expanding the possibility of significant reinforcement of the lining by installing the necessary number of reinforcement racks spaced along the width of the lining; 1 n.p. f-ly;

4 s.p. f-ly; 4 ill.

Description

The utility model relates to the mining industry and can be used for fastening mine workings in various, including difficult mining and geological conditions, as well as to maintain the mine workings at the “shtrek-lava” mates when removing the support supports for moving (latching) the face conveyor .

The closest to the utility model is known from the prior art in terms of the number of common features and the achieved result, the arch compliant support of the KTsL mine, containing an upper made with a horizontal rectilinear middle section, conjugated on both sides by curved transition sections with curved end sections, racks, made with curved upper end sections, and compliance nodes formed by overlapping curved ends of the upper and curved end sections of the upper and curved GOVERNMENTAL upper end portions of the uprights, made with the same radius (R ₁₎ of curvature and bonded to each other locks / UA 35419 C2 (Kiritchenko VY, Khalimendik YM) 15.10.2003 closest analogue - prototype /.

The lower parts of the racks are made rectilinear and are located in accordance with the patent of Ukraine No. 18737 C2 at an angle of 7-11 ° to the vertical and tilted inside the lining. The length of the horizontal rectilinear middle section of the upper is equal to:

A = K ₁ · R ₁ ,

where: K ₁ - the proportionality coefficient of the horizontal rectilinear middle section of the upper,

K ₁ = 0.364-0.450;

R ₁ is the radius of curvature of the curved end sections of the upper, mm.

Curved transitional sections of the upper is made with a radius R _{2 of} curvature, which is equal to:

R ₂ = K ₂ · R ₁

where: K ₂ - the proportionality coefficient of the rectilinear section of the upper,

K ₂ = 0.630-0.463,

R ₁ is the radius of curvature of the curved end parts of the upper, mm.

(The designations of the coefficients and geometric parameters of the known lining mentioned above are given from UA 35419 C2 and may not coincide with

the designations of the coefficients and geometric parameters of the claimed lining, given below.)

The implementation in the upper part of the upper part of the upper section of the horizontal, and the choice of the mentioned geometric parameters of the transition sections provide the ability to install double intermediate racks of temporary or permanent amplification.

This slightly increases the load-bearing capacity of the upper lining and provides the possibility of using lining to maintain mine workings in difficult geological conditions and on mating shrev-lava when removing lining racks for moving (latching) the face conveyor.

However, such a lining does not have optimal geometric parameters and does not allow for an optimal combination of both an increased cross-sectional area for convenient placement of technological equipment inside the lining and its high bearing capacity.

This is due to the fact that such a support does not have the optimal geometric parameters of the upper and struts, including the length of the horizontal rectilinear middle section and the radii of curvature of the curved end and transition sections of the upper, the shape, length and radius of curvature of the racks, as well as the height of the supports.

Due to the fact that the lower sections of the racks are made straight, located at an angle of 7-11 ° to the vertical and tilted into the lining, the space inside the lining is narrowed significantly, and its bearing capacity is reduced, since the straight sections of the racks work much worse under lateral load pressure than curved.

In addition, the known lining has an increased height and limited width, due to the short length of the horizontal section of the upper tower, and not the optimal length and radii of curvature of the elements of the upper tower and struts, which do not allow to form the optimal shape (contour) of the lining.

The increased height of the lining reduces its vertical stability and bearing capacity and additionally unjustifiably increases the volume of excavated rocks.

The insufficient length of the horizontal rectilinear middle section of the upper reduces the space inside the lining in width, which reduces the usable area inside the lining for the rational placement of technological equipment.

In addition, the insufficient length of the horizontal rectilinear middle section limits the possibility of reinforcing the lining by installing the necessary number of reinforcing posts (temporary or permanent) along the width of the lining for

increasing its resistance to rock pressure in difficult mining and geological conditions, which limits the bearing capacity of the lining.

The technical problem to which the utility model is directed is to improve the geometric shape of the lining by optimizing the geometric parameters of the upper, struts and lining in general, including the length of the horizontal rectilinear middle section and the radii of curvature of the curved end and transition sections of the upper, shape, length and radius the curvature of the racks, as well as the height of the lining.

The technical result, which is achieved by using the improved lining, is to increase its internal space for convenient placement of technological equipment while ensuring high load-bearing capacity and expanding the possibility of significant reinforcement of the lining by installing the necessary number of reinforcement racks spaced along the width of the lining.

The technical problem is solved, and the technical result is achieved by the fact that in a metal frame ductile lining containing an upper, made with a horizontal straight middle section, conjugated on both sides with curved end sections by curved transition sections, racks made with curved upper end sections, and compliance nodes formed by overlapping curved ends of the upper sections of the lumbar and curved upper ends of the racks, ennymi the same radius of curvature R ₁ and bonded to each other locks, according to the utility model, racks along the entire length are curved with a radius of curvature corresponding to the radius R ₁ of curvature of the curved upper end portions of which are selected according to the formula:

where: K ₁ - coefficient of optimization of curvature of the curved end sections of the upper and curved racks,

K ₁ = 0.87-1.30;

In - the distance between the curved racks at the sole of the lining, mm, while the radius R _{2 of} curvature of the curved transitional sections of the upper is selected by the formula:

where: K ₂ - coefficient of optimization of curvature of curved transitional sections of the upper,

K ₂ = 0.08-0.15;

In - the distance between the curved racks at the soles of the heel, mm, the height H of the lining chosen by the formula:

where: K ₃ - coefficient of optimization of the lining height,

K ₃ = 0.56-0.78;

In - the distance between the curved racks at the sole of the lining, mm, the length L _{1 of the} horizontal rectilinear middle section of the upper is selected by the formula:

where: K ₄ - coefficient of optimization of the length of the horizontal rectilinear middle section of the upper,

K ₄ = 0.34-0.54;

B is the distance between the curved racks at the sole of the lining, mm, and the length L _{2 of the} curved racks is selected by the formula:

where: K ₅ - coefficient of optimization of the length of the curved racks,

K ₅ = 0.53-0.74;

In - the distance between the curved racks at the sole of the lining, mm

The above features of the utility model are significant, since in the aggregate they are sufficient to solve the technical problem and achieve the technical result, and each separately is necessary to identify the claimed lining.

This combination of common and distinctive from the prototype of the essential features that characterize the improved lining, is unknown from the prior art, is new and sufficient for all cases to which the scope of legal protection applies.

A causal relationship between the totality of the essential features of the lining, including the distinctive ones when interacting with common features, in solving the technical problem and achieving the technical result, is as follows.

Due to the fact that the racks (lateral) along the entire length are made curved with a radius of curvature corresponding to the radius R _{1 of} curvature of their curved upper end sections, which is selected according to the formula R ₁ = K ₁ · B (1), the load-bearing capacity of the lining is increased .

This is due to the fact that under the action of lateral pressure, the curved sections of the curved racks work more efficiently than the rectilinear sections of the racks of the known lining.

The selected range of values of the coefficient K ₁ within the specified limits (K ₁ = 0.87-1.30) is optimal for this lining, determined empirically and provides a radius R _{1 of} curvature of the curved racks and curved end sections of the upper tower, at which it is achieved expanding the internal space of the lining, and increasing its bearing capacity.

The choice of the coefficient K ₁ less than the lower limit (K ₁ = 0.87) is not advisable, since the radius R _{1 of the} curvature of the curved racks is excessively reduced, and the internal space of the lining is reduced.

The choice of the coefficient K ₁ greater than the upper limit (K ₁ = 1.30) is also not advisable, since in this case the radius R _{1 of} curvature of the curved racks excessively increases, and their shape approaches the rectilinear, at which the bearing capacity of the lining decreases.

Due to the fact that the radius _of curvature R ₂ of the curved transitional sections of the upper is selected according to the formula R ₂ = K ₂ · B (2), the optimal conjugation of the horizontal rectilinear middle section of the upper is ensured with its end curved sections.

The selected range of values of the coefficient K ₂ within the specified limits (K ₂ = 0.08-0.15) is optimal for this lining, determined empirically and provides such a radius R _{2 of} curvature of the curved transition sections of the upper tower, at which it is achieved as a reduction in stress concentrators and the sufficient length L _{3 of the} curved end sections of the upper shaft for the normal operation of the compliance nodes, as well as the required length L _{1 of the} horizontal rectilinear middle section to enable the installation of the required number spacings of reinforcements spaced across the width.

The choice of the coefficient K ₂ less than the lower limit (K ₂ = 0.08) is not advisable, since the radius R _{2 of the} curvature of the curved transition sections of the upper shaft is excessively reduced, which leads to an increase in stress concentrators in the manufacture of the upper shaft and a decrease in the strength of these sections and supports whole.

The choice of the coefficient K ₂ greater than the upper limit (K ₂ = 0.15) is also not advisable, since the radius R _{2 of the} curvature of the curved transitional sections of the upper shaft is excessively increased, which leads to a decrease in compliance in the lateral nodes of the support lining, and a decrease in the length L _one

horizontal rectilinear middle section, which limits the ability to install the required number of gain racks.

Due to the fact that the height H of the lining is selected according to the formula H = K ₃ · B (3), a decrease in the height of the lining is achieved in comparison with the known lining, which ensures the stability of curved racks and the necessary bearing capacity of the lining and further reduces the volume of the removed rocks.

The selected range of values of the coefficient K ₃ within the specified limits (K ₃ = 0.56-0.78) is optimal for this lining, determined empirically and provides such a height H lining, which is achieved as an increase in the bearing capacity of the lining, and the formation sufficient space to accommodate process equipment and personnel inside the lining.

The choice of the coefficient K ₃ less than the lower limit (K ₃ = 0.56) is not advisable, since this reduces the internal space for the placement of technological equipment and personnel.

The choice of the coefficient K ₃ greater than the upper limit (K ₃ = 0.78) is also not advisable, since this reduces the stability and bearing capacity of the lining.

Due to the fact that the length L _{1 of the} horizontal rectilinear middle section of the upper is selected according to the formula L ₁ = K ₄ · B (4), an increase in its length is provided, which allows to expand the ability to install the necessary number of reinforcement racks spaced along the width of the lining.

The selected range of values of the coefficient K ₄ within the specified limits (K ₄ = 0.34-0.54) is optimal for this lining, determined empirically and provides such a length L _{1 of a} horizontal rectilinear middle section of the upper shaft at which a high bearing capacity of the upper shaft is achieved and support, and the necessary space for the placement of technological equipment and personnel inside the support.

The selection of the coefficient K ₄ less than the lower limit (K ₄ = 0.34) is not advisable, since this reduces the space along the width of the lining needed to accommodate the processing equipment and the required number of reinforcement racks spaced along the width of the lining.

The choice of the coefficient K ₄ greater than the upper limit (K ₄ = 0.54) is also not advisable, since this increases the length of the upper tower excessively, and its strength decreases significantly.

Due to the fact that the length L _{2 of the} curved racks is selected by the formula:

where: K ₅ - coefficient of optimization of the length of the curved racks,

K ₅ = 0.53-0.74,

B is the distance between the curved racks at the sole of the lining, mm, the optimal length (L ₂ ) of the curved racks is ensured, at which their high stability and the necessary supporting strength of the lining are achieved while ensuring the necessary flexibility, as well as sufficient space to accommodate the processing equipment and personnel inside lining and the amount of removed rocks is further reduced.

The selected range of values of the coefficient K ₅ within the specified limits (K ₅ = 0.53-0.74) is optimal for this lining, determined empirically and provides such a length L _{2 of} curved racks, and, accordingly, a height H of the lining, at which it is achieved , both increasing the bearing capacity of the lining, and the formation of sufficient space to accommodate the processing equipment and personnel inside the lining.

The choice of the coefficient K ₃ less than the lower limit (K ₅ = 0.53) is not advisable, since the length L _{2 of the} curved racks is excessively reduced, the internal space for the placement of technological equipment and personnel is reduced and the magnitude of lining support is reduced.

The choice of the coefficient K ₅ greater than the upper limit (K ₅ = 0.74) is also not advisable, since in this case the length (L ₂ ) of the curved racks is excessively increased, and their stability and bearing capacity of the lining are reduced and the volume of excavated rocks is further increased.

The metal frame compliant lining has other distinctive features that complement and characterize the utility model in some cases of its implementation and are used to improve its technical properties.

In a metal frame compliant lining, according to a utility model, the length L _{3 of the} curved end sections of the upper is selected by the formula:

where: L ₄ - the length of the compliance node, mm,

L ₄ = 400-600 mm;

L ₅ - the estimated value of the lining compliance, mm;

L ₅ = K ₆ · MV,

where: K ₆ - coefficient of removable reservoir power,

K ₆ = 0.5-0.7;

Mв - removable reservoir thickness, mm;

Mw = Mg ± Mn;

Where; Mg - geological power, mm,

(+) MP - cut-off power of empty solid rocks, mm;

(-) MP - the remaining pack of geological power for loose rocks, mm,

And - the reserve value of the lining support, mm;

A = 100-150 mm.

Due to the fact that the length L _{3 of the} curved end sections of the upper shaft is selected according to the formula L ₃ = L ₄ + L ₅ + A (6), the maximum value of the support lash is additionally provided, having exhausted which the curved struts abut against the curved transition sections of the upper shaft.

At the same time, the lining from a compliant operating mode goes into a hard operating mode at a site farther from the compliance nodes, which expands the support capabilities when working in a compliant mode in difficult mining and geological conditions.

The selected ranges of values of L ₄ and K ₆ within the specified limits (L ₄ = 400-600 mm) (K ₆ = 0.5-0.7) are optimal for this lining and provide the necessary flexibility for the effective operation of the lining in a malleable mode.

The selected range of values of the coefficient K ₆ within the specified limits (K ₆ = 0.5-0.7) is optimal for this lining, determined empirically and provides the choice of the optimal estimated value of ductility L ₅ for the maximum removable thickness of the reservoir Mv for coal mines, for example Ukraine.

The choice of the K ₆ coefficient less than the lower limit (K ₆ = 0.5) is not advisable, since this reduces the estimated value of the support L ₅ , which becomes insufficient for the effective operation of the support in a compliant mode at the maximum removable coal seam capacity Мв.

The choice of the coefficient K ₆ greater than the upper limit (K ₆ = 0.7) is also not advisable, since this increases the calculated value of the support L ₅ excessively, which unreasonably increases the length of the curved racks and the height of the lining, and, accordingly, reduces the stability of the curved racks and load bearing capacity.

The geological thickness of the Mg bed for coal mines, for example Ukraine, is mainly 700-1700 mm.

The cut-off power of empty solid rocks (+) Mn is mainly (+) (1.1-1.3) · Mg.

The remaining pack of geological power for loose rocks (-) Mn is mainly (-) (0.2-0.3) · Mg.

In a metal frame compliant lining, according to a utility model, the top in the horizontal rectilinear middle section is made detachable, consists of two components symmetrically located relative to the vertical axis of the lining and is provided with a compliance node formed by overlapping horizontal rectilinear elongated sections of the upper parts of the upper part and the locks fastened together .

This embodiment of the upper can increase the length of the horizontal rectilinear middle section of the detachable (composite) upper and increases the manufacturability of its manufacture and transportation for large sizes of supports from hot-rolled profiles of standard length (4 m).

Due to this, it is possible to significantly strengthen the lining by installing the necessary additional number of reinforcement racks spaced along the width of the lining, which expands the internal space and increases the load-bearing capacity of the lining.

According to the utility model, the metal frame compliant lining additionally contains anchors installed on the horizontal rectilinear middle section of the upper with the help of hooks and fasteners.

The installation of anchors in the horizontal rectilinear middle section of the upper tower provides an increase in the bearing capacity of the upper and roof supports.

At the same time, it is possible to use lining to maintain mine workings in difficult geological conditions and on mates of drift lava when removing curved racks of lining in order to move (latch) the face conveyor.

The metal frame flexible support, according to a utility model, further comprises anchors mounted on curved transitional sections of the upper with the help of hooks and fasteners.

The installation of anchors on the curved transitional sections of the upper tower provides a significant increase in the bearing capacity of the upper and roof supports.

At the same time, it is possible to use lining to maintain mine workings in particularly difficult geological conditions and on mates of drift lava when removing curved racks of lining for moving (latching) the face conveyor.

The prior art, the applicant has not identified a solution that matches the combination of common and distinctive essential features of an improved metal frame ductile lining, as a result of which we can conclude that the claimed

the technical solution is not part of the prior art and meets the criterion of the novelty utility model.

Further, an improved metal frame compliant lining is illustrated by a detailed description of its design with reference to the accompanying drawings.

Figure 1 shows a metal frame ductile lining with a non-detachable (solid) top.

Figure 2 shows a metal frame ductile lining with a detachable (composite) top.

In Fig.3 shows a section aa in Fig.1,2.

Figure 4 shows a section bB in figure 2.

The metal frame ductile lining contains (Fig.1-4) the following links.

Verkhnyak 1 (figure 1, 2), made with a horizontal rectilinear middle section, conjugated on both sides with curved end sections through curved transition sections.

Racks 2, made with curved upper end sections.

Compliance nodes 3 formed by overlapping curved end sections of the upper shaft 1 and curved upper end sections of the struts 2, made with the same radius _of curvature R ₁ and fastened together by locks 4.

Racks 2 along the entire length are made curved with a radius of curvature corresponding to the radius R _{1 of} curvature of their curved upper end sections, which is selected by the formula:

where: K ₁ - coefficient of optimization of curvature of the curved end sections of the upper 1 and curved racks 2,

K ₁ = 0.87-1.30;

In - the distance between the curved racks 2 at the sole of the lining, mm

The radius R _{2 of} curvature of the curved transitional sections of the upper 1 is selected by the formula:

where: K ₂ - coefficient of optimization of curvature of curved transitional sections of the upper 1,

K ₂ = 0.08-0.15;

In - the distance between the curved racks 2 at the sole of the lining, mm The height H of the lining is selected by the formula:

where: K ₃ - coefficient of optimization of the lining height,

K ₃ = 0.56-0.78;

B - the distance between the curved racks 2 at the sole of the lining, mm

The length L _{1 of the} horizontal rectilinear middle section of the upper 1 is selected by the formula:

where: K ₄ - coefficient of optimization of the length of the horizontal rectilinear middle section of the upper 1,

K ₄ = 0.34-0.54;

In - the distance between the curved racks 2 at the sole of the lining, mm

The length L _{2 of the} curved racks 2 is selected by the formula:

where: K ₅ - coefficient of optimization of the length of the curved racks 2,

K ₅ = 0.53-0.74;

In - the distance between the curved racks 2 at the sole of the lining, mm

Due to this optimization of the geometric parameters of the upper 1, curvilinear racks 2 and the lining as a whole, including the length L _{1 of the} horizontal rectilinear middle section and the radii R ₁ , R ₂ , respectively, the curvature of the curved end and transition sections of the upper 1, shape, length L ₂ and the radius R _{1 of} curvature of the curved struts 2, as well as the height H of the lining, the optimum shape of the improved lining is provided.

This increases the internal space of the lining for convenient placement of technological equipment while ensuring high load-bearing capacity and expanding the possibility of significant reinforcement of the lining by installing the required number of struts 8 reinforced across the width of the lining.

The length L _{3 of the} curved end sections of the upper 1 is selected by the formula:

where: L ₄ - the length of the node 3 compliance, mm,

L ₄ = 400-600 mm;

L ₅ - the estimated value of the lining compliance, mm;

L ₅ = K ₆ · MV,

where: K ₆ - coefficient of removable reservoir power,

K ₆ = 0.5-0.7,

Mв - removable reservoir thickness, mm;

Mv - Mg ± Mp,

where: Mg - geological power, mm;

(+) MP - cut-off power of empty solid rocks, mm;

(-) MP - the remaining pack of geological power for loose rocks, mm;

And - the reserve value of the lining support, mm;

A = 100-150 mm.

Due to this, the maximum value of the lining compliance is additionally ensured.

Verkhnyak 1 on the horizontal rectilinear middle section is made detachable (composite), consists of two components 1a, 1b symmetrically located relative to the vertical axis of the lining and is provided with a compliance node 3a, formed by overlapping horizontal rectilinear elongated sections of the upper parts 1a, 1b of the upper part 1 and fastened between locks 4a (figure 2).

Due to this, it is possible to significantly strengthen the lining by installing the necessary additional number of reinforcement racks spaced along the width of the lining, which expands the internal space and increases the load-bearing capacity of the lining.

The lining additionally contains anchors 5 mounted on a horizontal rectilinear middle section of the upper 1 with the help of grabs 6 and fasteners (Fig.1-4).

At the same time, it is possible to use lining to maintain mine workings in difficult geological conditions and on mates of drift lava when removing curved racks 2 lining for moving (latches) downhole conveyor.

The lining additionally contains anchors 5a mounted on the curved transitional sections of the upper 1 using grabs 6a and fasteners (Fig.1-4).

This makes it possible to use supports for supporting mine workings in particularly difficult geological conditions and on mates of drift lava when removing curved racks 2 supports for moving (latching) the face conveyor.

In addition, the implementation of the upper 1 with an elongated horizontal rectilinear middle section makes it possible to enhance the production by additional installation of independent anchors not connected with metal frame flexible supports (frames) directly on the horizontal part

production roofs, which are placed at a calculated distance from one another and from the frames.

Outside the lining installed lattice puff 7, preventing the spillage of the rock inside the lining.

To strengthen the lining, including to maintain the upper frame 1 at the mates of drift-lava, when it is necessary to remove the curved racks 2 to ensure movement of the downhole conveyor, the necessary number of reinforcement racks 8 reinforced across the width of the lining can be installed.

Examples of the selection of geometric characteristics of a metal frame ductile lining and coefficients for its various types are given in the table.

Table Type of lining, profile AT
mm R ₁ mm R ₂ mm H
mm L ₁ mm L ₂ mm L ₃ mm K ₁ = R ₁ / B K ₂ = R ₂ / B K ₃ = N / V K ₄ = L ₁ / B K ₅ = L ₂ / B KTsLO-7.0 SVP27 3406 4000 500 2419 1300 2000 1020 1.17 0.15 0.71 0.38 0.59 KTsLO-8.6 SVP27 3702 4500 500 2794 1300 2400 1320 1.21 0.13 0.75 0.35 0.65 KTslo-9.5 SVP27 3849 4350 500 2969 1300 2600 1320 1.13 0.13 0.77 0.34 0.67 KTsLO-11.2 SVP27 4124 5350 500 3225 1600 3000 1170 1.30 0.12 0.78 0.39 0.73 KTsLO-12.4 SVP27 4403 5300 500 3391 1600 3200 1170 1.20 0.11 0.77 0.36 0.73 KTslo-13.1 SVP27 4679 5500 500 3329 1900 3000 1300 1.17 0.11 0.71 0.41 0.64 KTslo-15.6 SVP27 4923 6250 500 3812 1900 3500 1300 1.27 0.10 0.77 0.38 0.71 KTsLO-18.0 SVP27 5427 6000 500 4060 1900 3800 1366 1.10 0.09 0.75 0.35 0.70 KTsLO-19.1 SVP27 5427 6000 500 4262 1900 4000 1366 1.10 0.09 0.78 0.35 0.74

Metal frame compliant lining erect as follows.

After inspecting the face and cleaning the rock along the perimeter of the mine, clearing the places for installing curved racks 2.

Curved racks 2 are installed alternately in the wells, or on the base plates at a distance B (see table) from each other.

Then, the curvilinear racks 2 are fastened with the previously installed previous adjacent similar frame, that is, with a similar metal frame compliant support, using interframe couplers (ties) (not shown in the drawings).

The position of the curved racks 2 on the base plate is fixed in the design position using the stops (not shown in the drawings).

When using a detachable (composite) verkhnyak 1 pre-produce its offline installation.

For this, the elongated horizontal rectilinear sections of the components 1a and 1b of the upper 1 are lapped together (about 400 mm in length) and fastened together with locks 4a, as a result of which a compliance node 3a is formed.

After that make the installation of one-piece or detachable (composite) the upper 1 on curved racks 2 (1, 2).

In this case, the curved end sections of a one-piece or detachable top 1 are connected externally to an overlap (L ₄ = 400-600 mm, mainly 500 mm) with the curved upper end sections of the curved struts 2, made with the same radius _of curvature R ₁ and fastened together by locks 4, resulting in compliance nodes 3 being formed.

After that, on the outside of the frame, that is, the metal frame ductile lining, set lattice tightening 7, preventing the spillage of the rock inside the lining.

In order to strengthen and increase the load-bearing capacity of the lining during its operation in difficult geological conditions, including for maintaining the upper tower 1 at the drift-lava mates, or when it is necessary to remove the curvilinear racks 2 to ensure the movement of the downhole conveyor, the necessary number of spaced the width inside the lining of the struts is 8 gain.

To increase the load-bearing capacity of the lining when operating it in difficult mining and geological conditions, on anchors 5 and fasteners, additionally install anchors 5 on horizontal horizontal straight middle section of one-piece upper 1 or components 1a and 1b of detachable (composite) upper 1

To further increase the load-bearing capacity of the lining when operating it in particularly difficult mining and geological conditions, on the curved transitional sections of the non-detachable upper 1 or on the components 1a and 1b of the detachable (composite) upper 1, using anchors 6a and fasteners, additionally install anchors 5a.

In addition, the anchors 5 and 5a ensure the maintenance of one-piece (integral) or detachable (composite) top 1 at mates "drift-lava", when it becomes necessary to dismantle the curved racks 2 to ensure movement (latch) downhole conveyor.

Metal frame compliant lining works as follows.

In the process of formation of a zone of non-elastic deformations around the development loop, a comprehensive compression of the lining by disturbed rocks occurs.

The pressure of the rocks and the sides of the mine is perceived by the curvilinear struts 2 lining.

The pressure of the rocks from the side of the roof of the excavation is perceived as a one-piece or detachable top 1 lining, and in the case of reinforcing the lining, also reinforcing posts 8 and anchors 5, 5a ..

By optimizing the geometric parameters of the upper 1, curvilinear racks 2 and the lining as a whole, including the length L _{1 of the} horizontal rectilinear middle section and the radii R ₁ , R ₂ , respectively, the curvature of the curved end and transition sections of the upper 1, shape, length L ₂ and the radius R _{1 of} curvature of the curved racks 2, as well as the height H of the lining provides the optimal form of improved lining.

This allows, depending on the form of mining and geological and geological conditions, to provide the required geomechanical balance of the lining - array system during lining operation in compliant mode.

As the coal seam mining, the pressure of the rocks on the lining increases.

In this case, the lining links slip in the nodes 3 of compliance from the pressure of the rocks from the side of the mine, as well as, to some extent, in the nodes of compliance 3a from the pressure of the rocks from the sides of the mine.

Such slippage of the support links in the compliance nodes 3, 3a occurs when the forces from the action of the rock pressure in these directions exceed the friction forces of the mating links in the said compliance nodes 3, 3a.

The result is a more uniform distribution of the load from the pressure of the rocks in the links of the lining in constantly changing mining and geological conditions.

After slipping the lining links in nodes 3, and to some extent in the compliance nodes 3a, the geomechanical equilibrium of the lining - array system occurs in the new conditions.

The lining perceives the main load from the side of the working roof.

When working in a compliant mode due to the slipping of the mating links of the lining in the nodes 3 of compliance, a gradual subsidence of the upper 1 relative to the curved racks 2.

This process is repeated many times until the estimated value of the support of the roof support L ₅ is exhausted, as well as the reserve value of the flexibility of the roof support A.

With the exhaustion of full compliance (L ₅ + A), the curvilinear struts 2 with a radius of curvature R ₁ abut against curved transitional sections with a radius of curvature R _{2 of the} upper 1 and the lining goes into hard mode.

However, during operation, the metal frame malleable support to the hard mode of operation is practically not brought.

To do this, the lining is reinforced either by reinforcement posts 8, the required number of which are placed along the width of the lining, or by anchors 5 and 5a, which are installed with the help of grabs 6, 6a and fasteners.

The output can be strengthened by the additional installation of independent anchors that are not connected with metal frame ductile supports (frames) directly on the horizontal part of the development roof, which are placed at a calculated distance from one another and from the frames.

This lining is suitable for operation, both in ordinary and in a more progressive, niche-free mining scheme.

This provides the necessary stability of the lining to maintain the excavation drifts to the approach of the lava, as well as when removing the curvilinear racks 2 lining when moving (latch) downhole conveyor.

The above information confirms the possibility of industrial implementation of an improved metal frame compliant lining, which can be manufactured industrially at any mining machine-building enterprise and can be widely used in coal mines, for example, Western Donbass of Ukraine, and indicate that the proposed technical solution meets the criterion of a utility model "Industrial applicability."

Notation list

1. upper 5. anchor 1a. component of the upper 1 5a. anchor 1b. component of the upper 1 6. anchor pickup 5 2. curved rack 6a. anchor 5a pickup 3. Compliance knot 7. lattice tightening 3a. compliance knot 8. gain rack 4. Compliance knot lock 3 4a. compliance knot lock 3a

Claims (5)

1. Metal frame malleable support containing the upper (1), made with a horizontal rectilinear middle section, conjugated on two sides with curved end sections through curved transition sections, racks (2) made with curved upper end sections, and nodes (3) compliance formed by overlapping curved end sections of the upper (1) and curved upper end sections of the uprights (2) made with the same radius (R ₁ ) of curvature and fastened between locks (4), characterized in that the racks (2) along the entire length are made curved with a radius of curvature corresponding to the radius (R ₁ ) of curvature of their curved upper end sections, which is selected by the formula

where K ₁ - coefficient of optimization of curvature of the curved end sections of the upper (1) and curved racks (2), K ₁ = 0.87-1.30; B - the distance between the uprights (2) at the sole of the lining, mm, the radius (R ₂ ) of curvature of the curved transitional sections of the upper (1) is selected by the formula

where K ₂ is the coefficient of optimization of the curvature of the curved transitional sections of the upper (1), K ₂ = 0.08-0.15; B - the distance between the uprights (2) at the sole of the lining, mm, the height (N) of the lining is chosen according to the formula

where K ₃ - coefficient of optimization of the lining height, K ₃ = 0.56-0.78; B - the distance between the uprights (2) at the sole of the lining, mm, the length (L ₁ ) of the horizontal rectilinear middle section of the upper (1) is selected by the formula

where K ₄ - coefficient of optimization of the length of the horizontal rectilinear middle section of the upper (1), K ₄ = 0.34-0.54; B is the distance between the uprights (2) at the sole of the lining, mm, and the length (L ₂ ) of the curved racks (2) is chosen according to the formula

where K ₅ - coefficient of optimization of the length of the curved racks (2), K ₅ = 0.53-0.74; B is the distance between the uprights (2) at the sole of the lining, mm. 2. A metal frame compliant lining according to claim 1, characterized in that the length (L ₃ ) of the curved end sections of the upper (1) is selected by the formula

where L ₄ - the length of the node (3) compliance, mm, L ₄ = 400-600 mm; L ₅ - the estimated magnitude of the lining support, mm, L ₅ = K ₆ · MB, where K ₆ - coefficient of removable reservoir power, K ₆ = 0.5-0.7; MV - removable reservoir power, mm, Mw = Mg ± Mn, where Mg is the geological power, mm, (+) MP - suppressed power of empty solid rocks, mm, (-) MP - the remaining pack of geological power for loose rocks, mm, And - the reserve value of the lining support, mm, A = 100-150 mm. 3. The metal frame flexible support according to claim 2, characterized in that the top (1) on the horizontal rectilinear middle section is made detachable, consists of two components (1a, 1b) symmetrically located relative to the vertical axis of the support, and is provided with a compliance unit (3a) formed by overlapping horizontal rectilinear elongated sections of the components (1a, 1b) of the upper (1) and fastened together by locks (4a). 4. Metal frame compliant lining according to any one of claims 1 to 3, characterized in that it further comprises anchors (5) mounted on a horizontal rectilinear middle section of the upper (1) with the help of hooks (6) and fasteners. 5. A metal frame flexible support, according to any one of claims 1 to 3, characterized in that it further comprises anchors (5a) mounted on curved transitional sections of the upper (1) with the help of hooks (6a) and fasteners.