Roadway pavement hardening floor heave prevention arrangement structure

Abstract

The utility model discloses a roadway pavement hardening floor heave prevention arrangement structure which comprises a roadway body, a foundation pit is formed in the length direction of a bottom plate of the roadway body, a plurality of reinforcing bars are arranged in the foundation pit in a crossing mode, the reinforcing bars are in a corrugated shape, the reinforcing bars are connected with vertical anchor rods through connecting pieces, and the vertical anchor rods are connected with the roadway body through the connecting pieces. The bottom ends of the vertical anchor rods are inserted into the bottom surrounding rock of the roadway body, and every two adjacent reinforcing bars are connected through a longitudinal bar; the utility model has the beneficial effects that the plurality of corrugated reinforcing bars are arranged in the foundation pit at equal intervals and are connected and fixed by using the vertical anchor rods and the transverse anchor rods, so that a firm floor heave prevention arrangement structure is formed, the resistance strength of the bottom plate is greatly improved, the roadway pressure can be better borne, the floor heave phenomenon is prevented, and the service life of the bottom plate is prolonged. Therefore, the hardened pavement paved on the bottom plate is ensured to bulge and crack, and normal and safe passing of equipment and personnel in a roadway is facilitated.

Description

Technical fields:

[0001] This utility model belongs to the field of road surface hardening construction, and particularly relates to a road surface hardening anti-heave arrangement structure. Background technology:

[0002] With the rapid development of intelligent rapid tunneling equipment, the efficiency of mine roadway excavation has been greatly improved. However, the efficiency of roadway surface hardening has become a bottleneck in improving rapid tunneling efficiency, directly affecting the efficiency of various aspects such as underground production, transportation, and tunneling operations.

[0003] Heave often occurs after the roadway floor surface has been hardened. Heave refers to the upward bulging of the roadway floor, usually caused by the deformation and displacement of the roadway floor and sidewalls due to mining operations, leading to bulging and cracking of the hardened surface. Current methods for treating heave primarily involve installing anchor bolts or grouting after flooring to reduce deformation. However, these methods only provide short-term relief. Once the roadway is affected by mining activity, deformation repeats, and heave occurs frequently again. This not only affects the safe passage of equipment and personnel within the roadway but also results in significant costs and high labor intensity due to repeated hardening and repairs after heave. Summary of the Invention:

[0004] The purpose of this utility model is to provide a roadway surface hardening anti-floor heave arrangement structure, which overcomes the shortcomings of the above-mentioned prior art and effectively solves the existing problem of frequent floor heave after roadway surface hardening.

[0005] The present invention relates to a roadway surface hardening and anti-bottom heave arrangement structure, comprising a roadway body, a foundation pit being formed along the length of the roadway body's bottom slab, and a plurality of steel bars being arranged transversely within the foundation pit. The steel bars are corrugated in shape and are connected to vertical anchor rods via connectors. The bottom end of the vertical anchor rod is inserted into the bottom surrounding rock of the roadway body, and adjacent steel bars are connected by longitudinal reinforcement.

[0006] Furthermore, the connector includes a buckle plate, on which a semi-circular groove matching the reinforcing bar is provided, and anchor bolt insertion holes are provided at both ends of the buckle plate.

[0007] Furthermore, both ends of the steel bar are bent inward in an L-shape.

[0008] Furthermore, the two ends of the reinforcing bar are connected to the horizontal anchor rod through the connector, and the bottom end of the horizontal anchor rod is inserted into the side rock of the tunnel body.

[0009] Furthermore, the width of the reinforcing bar is the same as the width of the foundation pit.

[0010] Furthermore, the foundation pit is in the shape of an inverted fan.

[0011] The beneficial effects of this utility model are as follows: By arranging several corrugated steel bars at equal intervals in the foundation pit and connecting and fixing them with vertical and horizontal anchor rods, a robust anti-heave arrangement structure is formed, which greatly improves the resistance strength of the bottom plate, can better withstand the pressure of the roadway, prevents the heave phenomenon, and ensures that the hardened road surface laid on the bottom plate does not bulge or crack, thus facilitating the normal and safe passage of equipment and personnel in the roadway. Attached image description:

[0012] Figure 1 This is an overall structural view of the present invention;

[0013] Figure 2 This is a front view of the reinforcing bar and anchor rod in this utility model;

[0014] Figure 3 This is a top view of the reinforcing bar and anchor rod in this utility model;

[0015] Figure 4 This is a cross-sectional view of the connector in this utility model;

[0016] In the diagram, 1 is the tunnel body, 2 is the foundation pit, 3 is the steel bar, 4 is the vertical anchor, 5 is the longitudinal reinforcement, 6 is the buckle plate, 7 is the horizontal anchor, 8 is the base layer, and 9 is the road surface layer. Detailed implementation method:

[0017] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings:

[0018] 7. For example Figures 1 to 4 As shown, a road surface hardening and anti-bottom heave arrangement structure includes a roadway body 1, with a foundation pit 2 opened along the length of the bottom slab of the roadway body 1. Several steel bars 3 are arranged transversely in the foundation pit 2. The steel bars 3 are corrugated and connected to vertical anchor rods 4 by connectors. The bottom end of the vertical anchor rod 4 is inserted into the bottom surrounding rock of the roadway body 1. Adjacent steel bars 3 are connected by longitudinal bars 5. The connectors include buckle plates 6, which have semi-circular grooves that match the steel bars 3. Anchor rod insertion holes are opened at both ends of the buckle plates 6. Both ends of the steel bars 3 are bent inward in an L-shape. The two ends of the steel bars 3 are connected to horizontal anchor rods 7 by the connectors. The bottom end of the horizontal anchor rods 7 is inserted into the side surrounding rock of the roadway body 1. The width of the steel bars 3 is the same as the width of the foundation pit 2. The foundation pit 2 is inverted fan shape.

[0019] Specifically, by arranging several corrugated steel bars 3 at equal intervals in the foundation pit 2 and connecting and fixing them with vertical anchor rods 4 and horizontal anchor rods 7, a robust anti-floor heave arrangement structure is formed, which greatly improves the strength of the floor slab, enabling it to better withstand the roadway pressure and prevent floor heave from occurring.

[0020] In practical use, firstly, a foundation pit 2 is excavated along the length of the bottom slab of the tunnel body 1, and a layer of foundation stone is laid in the foundation pit 2. Then, several steel bars 3 are arranged horizontally across the foundation stone layer in the foundation pit 2. At this time, the first part of the buckle plate 6 is evenly placed at the horizontal sections of the steel bars 3, and the vertical anchor rods 4 are inserted into the corresponding two anchor rod holes. The bottom end of the anchor rod 4 is driven into the foundation stone layer until it reaches the bottom of the surrounding rock of the tunnel body 1. Then, the second part of the buckle plate 6 is installed. The buckle plate 6 is placed at the inward bends of both ends of the steel bar 3. The horizontal anchor rod 7 is inserted into the two anchor rod holes, and the bottom end of the horizontal anchor rod 7 is driven into the surrounding rock of the side wall of the tunnel body 1. Under the action of the vertical anchor rod 4 and the horizontal anchor rod 7, the frame formed by the steel bar 3 is fixed on the base stone layer as a whole, and the base stone is filled again so that the steel bar 3 is completely buried by the base stone. Then, the second reinforcement layer 8 is laid on the base stone layer, and finally, the road surface layer made of concrete is laid on the reinforcement layer 8.

[0021] During this process, the corrugated steel bars 3 can withstand greater pressure and mainly resist the deformation force generated by the bottom plate of the tunnel body 1, and absorb and disperse the deformation force into the foundation layer and the base layer. The foundation layer, steel bars 3, vertical anchors 4 and horizontal anchors 7 and the base layer form an integral structure, which bears the pressure at the bottom of the tunnel. The pressure is offset by action and reaction forces, thereby preventing the tunnel floor from bulging.

[0022] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A floor hardening anti-heave arrangement for a roadway comprising a roadway body (1), characterised in that: A foundation pit (2) is formed along the length direction of the floor of the roadway body (1), a plurality of steel bars (3) are arranged across in the foundation pit (2), the steel bars (3) are in corrugated shape, the steel bars (3) are connected with vertical anchor rods (4) through connecting pieces, the bottom ends of the vertical anchor rods (4) are inserted into the bottom surrounding rock of the roadway body (1), and adjacent two steel bars (3) are connected through longitudinal reinforcement (5).

2. A floor hardening anti-heave arrangement for a roadway according to claim 1, characterised in that: The connecting piece comprises a buckle plate (6), a semicircular clamping groove matched with the steel bar (3) is arranged on the buckle plate (6), and anchor rod insertion holes are formed at both ends of the buckle plate (6).

3. A floor hardening anti-heave arrangement for a roadway according to claim 1, characterised in that: Both ends of the steel bar (3) are inwardly bent into L shape.

4. A floor hardening anti-heave arrangement for a roadway according to claim 3, characterised in that: Both ends of the steel bar (3) are connected with horizontal anchor rods (7) through the connecting pieces, and the bottom ends of the horizontal anchor rods (7) are inserted into the side surrounding rock of the roadway body (1).

5. A floor hardening anti-heave arrangement for a roadway according to claim 1, characterised in that: The width of the steel bar (3) is the same as the width of the foundation pit (2).

6. A floor hardening anti-heave arrangement for a roadway according to claim 1, characterised in that: The foundation pit (2) is in inverted fan shape.

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