SU1073465A1 - Method of constructing ground braces of metal mine roof supports - Google Patents

Abstract

ERECTION METHOD Lezhnyov metal bolting comprising clearing soil generation, assembly elements Lezhnyov, installation bokovy.h abutments on stands lining and laying sleepers with a lag of slaughtering advance working perpendicular to the longitudinal axis thereof, characterized in that, in order to reduce complexity of erecting and dismantling level, increase the stability of development and reliability of lining in it, the level is placed in the intervals. between the frames, lining under the metal girders of special profile, which are installed from the inside the supports are supported at a certain height from the soil of the excavation by joining with the side supports of the supports.

Description

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3 The invention relates to the mountain; ic; iy and can be used when penetrating and attaching iodine () to weak and unstable rocks at night. Known for the method of erection; 1 metal clan, including 5; 1 clearing the soil near the racks of the already established lining and laying the longitudinal wooden rails from the inside of the racks with the iodine lateral supports of the racks lagging behind | 1. The disadvantages of this method are that the NPP is unreliable in operation, low production stability, metal resistance, as with weak rocks at night and lateral rock pressure on the frame of the roof, support rods are shifted inward; high complexity of the dismantling of the beds. The known method is but; Veda: HI, 1ezhp (M1 metal roll, including no one clearing the night workings, assembling the h elente g, laying side pa racks lining and laying lezhpey with lagging 1-1 from the bottom of the preparatory work perpendicular to its longitudinal axis 2. The disadvantages of the known method are The high laboriousness of the laying of the rods, the low stability and the inadequacy of the mine workings are high, since, due to the fact that the roll bed is erected in the nloskokhti of the support frame itself, Bceio can be installed a hundred, less, less, than she has from the frame of the roll; the laboriousness of the dem (; 1 thread is more important). The purpose of the invention is to reduce the laboriousness of the erection and dismounting of the beds, increase the output of the machine, and the reliability in it of the roll. The goal is achieved by the coiviacHo known way to fit in ) AMAMI under the metal sprnrofi.ch runs, which are installed from the inside of the KpeiHi racks at a certain height from the night of the working by combining 1 and with the side stops of the racks. Such an embodiment of the method of raising the top of a metal roll is a nosv 1; t to carry out spatial communication between the individual Kpeini frames in the mine; to bring the density of the beds in it to the necessary need, according to the nature of the development of the process of heaving the soil; c:) to reduce the laboriousness of manual operations, to realize the hinge joining of the lying ones; exclude the impact of concentrated load;) ok on the ground, for example, when installing under the upper supports of temporary reinforcing pillars, ensure the hivi1e1 {th repulse of the support lining when they are shifted inwardly and iodine by the action of lateral pressure; . 10 5 on () n | -. 1 shows a part of the mine with installed KpeiHi metal frames in it; on . 2 shows section A-A in FIG. one; on (. 3 - the part of the mine with installed metal blade; metal: a regular run from snepnros) and; 1; on fis. 4 - times) without B - B in FIG. 3; in fig. 5 - part of the development with installed, fallen, lying; pas figs. 6 shows a section B according to FIG. five; in fig. 7 is a view A of FIG. 6; in fig. 8 — node I in FIG. 6. FIG. 1--8 marked; 1 - soil production; 2 - stand of creia from metallic sneprofi, l (SVP); 3 - lateral unore from the snore section; 4 - metallic nrogon from snecro; 5 - composite flat lezhep1) from metal () silt (EHE); 6 - relnna lug; 7 bolt connection with a collar, a pad and nuts; 8 wooden bindings. (The first erection of the metal base of the projection is carried out in the following way. Frame crash) with the wooden puff 8 is erected spontaneously in the bottomhole after the bottom (JDBig of the engineered output, and the seats are laid with some lagging behind after the erection of the support frame, the moment of removal of the temporary rail track and the laying of the standing rail track. (lh; | yki 2 tilt frames in the working out of the installation) av. pour as shown in phi1 1. At the same time, the side stops of the 3 racks of the 2 lining are aligned along one line. rL) H1o.lnen1 1 nz) 1bolyih from Cuttings are metal snecrofil and attached to racks 2 roll during HOMOHJ.H welding, i.e. hard. At the bottom, the podol axes of the side rails 3 are non-regular with the longitudinal axis of the 2 tilt racks and the parallel of the longitudinal axis of the excavation. Directly on the side racks of 3 racks 2 banks install liyTCM scent of meta l. Nrogony 4 of snepprofil. The length of the metal girders 4 can be different, it determines the possibility of placement in transport vessels, weight and so on. The soil is cleaned up and the soil is laid down. 5 are laid overnight. The installation of the top 5 is effected under the metal projections 4, and the other falls in the intervals between the frames of the roll. Metallic lezhny 5 are made of composite and gentle from a snecrophile, i.e. have a small arrow of the irogib. The installation of the planar 5 is accomplished by assembling their two interchangeable elements and forming a compliant assembly with the help of connected 7. At the ends of the top 5, they are equipped with the correct stubs 6, which are made and: sheet slalled and attached to the profile 5 during nomoproduction and welding. During operation, metal beds 5 as a result of soil heaves take on themselves loads from rock pressure, which are then passed to metal girders 4 installed on the inner side of pillars 2 and supported at a certain height from the soil of the mine. Further, these loads from metal girders 4 are transferred to lateral stops 3 and then perceived by the supports 2. The density of the beds at 1 m of generation is determined by the intensity of the nature of the development of the stony rocks of the soil. Thus, with the installation of ravines in the gaps between the lining frames, the density of the ravines can be adjusted according to the nature of the heel process without increasing the density of the drift rails. Installing a greater amount of bedrock on 1 p. m output contributes to increased resistance to the racks; 2 supports when exposed to lateral rock pressure from surrounding rocks. At the same time, the pillars 2 of the lining tend to move inward of the excavation, crushing of the soil in the soil of the first excavation (the rocks are weak). Repulsing the pillars with 2 racks 5 corresponds to the total resistance of the pliable nodes of the composite rails. Racks 2 lining in shear affect the beam 5 through the metal girders 4 and the lifting stitches 6 of the bed. The installation of metal girders 4 by overlapping the side stops 3 of the uprights 2 contributes to achieving a spatial connection between the individual lining frames in the working, which increases the reliability of the lining in it and, in general, its stability. So, for example, when an oblique load from the pressure of the surrounding rocks is applied to the rack 2, the latter tends to relax in the rock hole of soil 1, and then move to the adjacent frame, collapsing relative to its axis, however, this does not occur, since considerable frictional forces i.e. acting between the metal girder 4 and the side lugs 3 prevent this. When installing temporary reinforcement supports (for example, hydraulic pillars) under the upper liner supports in areas of intense pressure, the effect of concentrated loads on them is prevented because the beds 5 are inserted in the gap between the support frames. This increases the reliability of the bed during operation. The free laying of the planks 5 under the metal girders 4 allows for hinged attachment to them, which leads to a decrease in flexural-torsional deformations at the joints of the top 5 with the girders 4. The metal girders 4 are set at a certain height from the soil 1 of the working. This height is determined mainly by the radius of curvature of the valleys 5 and is determined from the conditions of the smallest volumes of undermining of the soil 1 generation during their construction. Such installation of the metal girders 4 contributes to reducing the laboriousness of their dismantling, since prior to their removal they are not squeezed between the working soil 1 and the side stops 3. Dismantling of the beds is carried out by unscrewing the bolted joints 7 with clamps, strips and nuts in the flexible nodes of the composite legs 5 Then remove the components of the front 5, and then remove the metal girders 4 from the side stops 3. Lastly, the support frames are removed. Both mounting and dismounting of the plank 5 in the proposed method include a minimum of manual operations, for example, screwing and unscrewing the bolted joints 7 in this variant is necessary only in compliant knots of the planar 5. The most effective area of application of this method of erecting plank metal supports is profiled workings intended for electric haulage, which is carried out strictly horizontal. 2 U S: “S.

Claims (1)

METHOD FOR ESTABLISHING A LOWER METAL FASTENERS, including clearing the excavation soil, assembling bedding elements, installing lateral stops on the supports, and laying the preparatory excavation perpendicular to its longitudinal axis behind the bottom, characterized in that, in order to reduce the complexity of erection and dismantling, to increase the stability of the mine and the reliability of the lining in it, the beds are laid in the spaces between the lining frames under the metal girders from the special profile, which are installed on the inside of the racks to turnips at a certain height from the working soil by connecting with the lateral stops of the racks. SU. „. 1073465