Pavement structure for reducing concrete pavement damage in underground shoveling operation

Abstract

The utility model relates to a pavement structure for reducing concrete pavement damage in underground shoveling operation, aims to solve the technical problem that shoveling equipment damages concrete floors, and adopts the technical scheme that the pavement structure comprises a plurality of supporting rods, a plurality of supporting seats and a plurality of steel rails, a plurality of supporting rods are inserted into the round holes respectively, the length of each supporting seat is equal to the width of a roadway, a plurality of supporting seat grooves are horizontally placed downwards in the width direction of the roadway, the two ends of each supporting seat groove are clamped on a plurality of pairs of extending supporting rods, and a plurality of steel rails are evenly welded to the supporting seats in a crossed mode in multiple rows in the length direction of the roadway. Gaps between the supporting seat and the steel rail and between the supporting seat and the bottom plate are filled with pouring concrete and solidified, and the top face of the pouring concrete is lower than the top face of the steel rail. The steel rail is higher than poured concrete, the shovel teeth are directly contacted with the steel rail during operation and cannot be contacted with the poured concrete, and the floor surface is prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the road construction technical field, concretely relates to a road surface structure for reducing the damage of concrete road surface in underground shovel loading operation. BACKGROUND

[0002] In the mine, due to the input of large trackless shovel loader, the repair rate of concrete road surface in underground is high for a long time, especially the ore loading approach of ore extraction, the concrete floor of underground ore loading approach is under the strong impact of shovel loader for a long time, and the concrete floor is damaged seriously after being used for 3-4 months, which causes great influence on the on-site ore production. CONTENT

[0003] The utility model aims at solving the above problems, and provides a road surface structure for reducing the damage of concrete road surface in underground shovel loading operation.

[0004] To solve the above technical problems, the utility model adopts the technical scheme of:

[0005] A road surface structure for reducing the damage of concrete road surface in underground shovel loading operation, which comprises a plurality of supporting rods, a plurality of supporting seats and a plurality of steel rails, a plurality of pairs of round holes are uniformly and symmetrically arranged on the two sides of the roadway at a distance of 80mm from the bottom plate, the length of the supporting rod is greater than the depth of the round hole, a plurality of supporting rods are respectively inserted into the round holes and protrude a part of the length, the supporting seat is made of channel steel and has a length equal to the width of the roadway, a plurality of supporting seats are horizontally placed along the width direction of the roadway with the grooves downward, and the two ends are clamped on a plurality of protruding supporting rods and fixed by welding, the plurality of steel rails are evenly and crossly welded on the supporting seats along the length direction of the roadway, the gap between the supporting seat and the steel rail and the gap between the supporting seat and the bottom plate are filled and solidified by pouring concrete, and the top surface of the pouring concrete is lower than the top surface of the steel rail.

[0006] Further, the top surface of the pouring concrete is 3-8mm lower than the top surface of the steel rail.

[0007] Further, the bottom of the two sides of the roadway is provided with a step, the round hole is arranged on the step, the length of the supporting seat 4 is equal to the distance between the two steps, and the height of the step is greater than the top surface of the steel rail.

[0008] Further, the two ends of the steel rail are downwardly bent, and the bending angle α is 15-25°.

[0009] Compared with the prior art, the utility model has the beneficial effects that:

[0010] 1、The utility model is mainly used in the ore loading approach of underground trackless shovel loader, the height of the steel rail is higher than the pouring concrete, the shovel teeth directly contact the steel rail during operation, and the pouring concrete is not contacted, so that the damage of the floor surface is avoided;

[0011] 2. The friction between the rail surface and the shovel tooth surface of this utility model is much smaller than the friction between the cast concrete floor surface and the shovel tooth surface, which is more conducive to shoveling.

[0012] 3. The steel structure of this utility model is made entirely of scrap steel and offcuts, which saves costs and maximizes the utilization of materials. Attached Figure Description

[0013] Fig. 1 This is a schematic diagram of the longitudinal cross-sectional structure of the tunnel according to this utility model;

[0014] Fig. 2 This is a top view structural diagram of the present invention;

[0015] Fig. 3 This is a schematic diagram of the rail structure of this utility model;

[0016] In the diagram: 1. Lane; 2. Steps; 3. Support rod; 4. Support base; 5. Rail; 6. Concrete pouring. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figs. 1-3 As shown, a road surface structure for reducing damage to concrete pavement during underground loading operations includes eight support rods 3, four support seats 4, and several steel rails 5. Steps 2 are provided at the bottom of both sides of the tunnel 1. Four pairs of circular holes, each 38mm in diameter and 300mm deep, are evenly and symmetrically arranged on the steps 2 at a distance of 80mm from the bottom plate. The support rods 3 are 500mm long, inserted into the circular holes with 200mm protruding. The support seats 4 are made of channel steel, with a length equal to the distance between the two steps 2. The grooves of the four support seats 4 extend downwards along the tunnel. 1. The rails are placed horizontally in the width direction and are secured at both ends by several pairs of extended support rods 3 and fully welded. Several rails 5 are evenly and crosswise welded to the support base 4 in multiple rows along the length of the tunnel 1. Both ends of the rails 5 are bent downwards at 20° to prevent the sharp edges of the rails 2 from damaging the tires during subsequent shoveling operations by the loader. The gaps between the support base 4 and the rails 5, and between the support base 4 and the base plate, are filled with poured concrete 6 and solidified. The top surface of the poured concrete 6 is 5mm lower than the top surface of the rails 5, and the height of the step 2 is greater than the top surface of the rails 5.

[0019] The difference between the top surface of the poured concrete 6 and the top surface of the rail 5 can be any value between 3 and 8 mm.

[0020] The downward bending angle α at both ends of the rail 5 can also be any value between 15° and 25°.

[0021] The working process of this utility model:

[0022] Before installation, clean the dolomite on the floor of the roadway 1 until the original rock is exposed;

[0023] Construct circular holes on the step 2 at a distance of 80 mm from the floor surface, with a depth of 300 mm. A total of four pairs of circular holes are constructed on both sides of the roadway, with 4 holes on each side and a spacing of 2000 mm between the circular holes.

[0024] Insert support rods 3 with a diameter of 38 mm and a length of 500 mm into the circular holes, with each support rod 3 inserted to a depth of 300 mm and protruding 200 mm. The protruding length can be appropriately lengthened according to actual conditions.

[0025] Place four support seats 4 with grooves downward along the width direction of the roadway 1, and clamp them at both ends on the four pairs of protruding support rods 3 and fully weld them.

[0026] Arrange steel rails 5 on the support seats 4 in multiple rows evenly intersecting in the length direction of the roadway 1, and bend both ends of the steel rails 5 downward by 20° to prevent the edges of the steel rails 2 from damaging the tires during subsequent shovel loader operations.

[0027] After the steel structure is installed, pour concrete according to the given waist line and required thickness, and ensure that the top surface of the steel rails 5 is 5 mm higher than the top surface of the poured concrete 6 after pouring. During pouring, strictly follow the concrete pouring process and construction quality requirements to ensure that the steel structure becomes an integral whole.

[0028] After pouring is completed and the curing period inspection is passed, shovel loader operations can be performed. At this time, the shovel teeth plate directly contacts the steel rails 5 without directly rubbing against the poured concrete 6, thereby achieving the purpose of prolonging the service life of the poured concrete 6 and saving maintenance time and cost.

[0029] Through field application and effect detection, it is found that the maintenance rate of the structure concrete floor per million tons has been reduced from the original 10 m³ / million tons to 6.6 m³ / million tons, with a reduction of 34%.

Claims

1. A pavement structure for reducing damage to concrete pavement during underground loading operations, characterized in that, The utility model relates to a kind of support structure of roadway, including several support poles (3), several support seats (4) and several rails (5), the roadway (1) two sides are uniformly symmetrical with several pairs of round holes at the distance of 80mm from floor, the support pole (3) length is greater than the depth of round hole, several support poles (3) are inserted into round hole and leak out partial length respectively, the support seat (4) is made of channel steel, length is equal to the width of roadway (1), several support seats (4) recess downward along the width direction of roadway (1) horizontally placed, two ends are clamped in several pairs of protruding support poles (3) and are fixed by welding, several rails (5) are evenly crossed and welded on support seat (4) along the length direction of roadway (1) in multiple rows, the gap between support seat (4) and rail (5), support seat (4) and floor is filled with cast concrete (6) and solidifies, the top surface of cast concrete (6) is lower than the top surface of rail (5).

2. A pavement structure for reducing damage to a concrete pavement by a downhole shovel loading operation according to claim 1, wherein The top surface of the cast concrete (6) is 3-8mm lower than the top surface of the rail (5).

3. A pavement structure for reducing damage to a concrete pavement by a downhole shovel loading operation according to claim 1, wherein The roadway (1) two sides bottom is provided with step (2), the round hole is arranged on step (2), the length of support seat (4) is equal to the distance between two steps (2), and the height of step (2) is greater than the top surface of rail (5).

4. The pavement structure for reducing damage to concrete pavement by a shovel loading operation in a pit according to claim 1, wherein The both ends of the rail (5) are bent downward, and the bending angle α is 15-25°.

Images