Anchoring net spray anti-arch bottom drum management structure

Abstract

The utility model belongs to the coal mine underground roadway management field, concretely relates to a kind of anchor injection net spray reverse arch floor heave management structure, including roadway, the lower end of the roadway is laid with concrete, the inside of the roadway is provided with steel strand anchor cable, the inside of the roadway is provided with high-strength anchor rod.The utility model is provided with anchor rod, quicklime cushion layer and grouting fixed plate, the weak rock stratum is connected with its lower stable rock stratum by anchor rod, the crack opening and the generation of new crack caused by the expansion and swelling of weak rock stratum are inhibited, while the rock stratum is reinforced after anchor rod, the bending strength can be increased, the weak rock stratum is prevented from bulging upward, the quicklime cushion layer can absorb moisture, and at the same time, form a certain strength of isolation layer by solidification, further inhibit the occurrence of roadway floor heave, the grouting fixed plate is grouted by using polyurethane material, the bonding strength between rock strata is high, the reinforcement effect is good, and the roadway floor heave is treated.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mine underground roadway treatment technical field, concretely is a kind of anchor injection net spray reverse arch bottom heave treatment structure. BACKGROUND

[0002] Bottom heave is a kind of mine pressure phenomenon commonly seen in coal mine soft rock roadway, with the increasing expansion of coal production scale and the increasing mining depth of our country, bottom heave disaster is increasing, when roadway bottom heave occurs, the space height between roadway roof and floor will be reduced to different degrees, which hinders the normal transportation, pedestrian and ventilation of roadway;Serious roadway bottom heave can affect the overall stability of roadway surrounding rock, cause great threat to safe and efficient mining of deep mine, and directly affect the smooth progress of coal mine safety production.

[0003] Due to disturbance and dynamic pressure influence, surrounding rock is excessively broken, the overall connection strength of rock is reduced, the rock mass forms slip surface along the joint surface, bedding surface and fissure surface of rock stratum, and the originally closely connected rock mass between layers is divided into many thin layers, even completely loses strength, and some shale components in rock swell when meeting water, and water exists in many underground roadways, and the existence of water is an important reason for roadway bottom heave. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of anchor injection net spray reverse arch bottom heave treatment structure, solve the problem of easy arch bottom of roadway bottom.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of anchor injection net spray reverse arch bottom heave treatment structure, including roadway, the lower end of the roadway is paved with concrete, the inside of the roadway is provided with steel strand anchor cable, the inside of the roadway is provided with high-strength anchor rod, the inside top right part of the roadway is equipped with monorail crane, the outside of the high-strength anchor rod is provided with anchor point, the outside of the high-strength anchor rod is equipped with anchor plate by nut.

[0006] Preferably, the upper end left part of the concrete is equipped with belt conveyor, the anchor plate is in contact with the roadway, and the outside of the roadway is paved with quicklime cushion.

[0007] Preferably, the inside top of the roadway is fixedly installed with air cylinder, and the left part of the monorail crane is located in the left part of the roadway bottom and is sprayed with 50mm thick cushion.

[0008] Preferably, the number of the steel strand anchor cable is multiple, multiple steel strand anchor cables are evenly distributed in the inside of the roadway, and multiple steel strand anchor cables are staggered to form steel mesh.

[0009] Preferably, the quantity of the high-strength anchor rods is multiple, and the multiple high-strength anchor rods are uniformly distributed in the inside of the roadway, so that the overall strength of the roadway can be increased.

[0010] Preferably, the high-strength anchor rod at the bottom of the roadway is fixedly connected with the concrete, the steel strand anchor cable at the bottom of the roadway is fixedly connected with the concrete, and the high-strength anchor rod at the bottom of the roadway is a grouting anchor rod.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] The utility model discloses a grouting fixed plate, anchor rod, quicklime cushion layer and the setting of the grouting fixed plate, the weak rock stratum is connected with its lower stable rock stratum through anchor rod, and the crack opening and the generation of new crack caused by the expansion of weak rock stratum are inhibited, and after the rock stratum is reinforced through anchor rod, the bending strength can be increased, the weak rock stratum is prevented from bulging upward, the quicklime cushion layer can absorb moisture, and simultaneously, the quicklime cushion layer is solidified to form an isolation layer with certain strength, the occurrence of the roadway floor heave is further inhibited, the grouting operation of the grouting fixed plate is carried out by using polyurethane material, the bonding strength between rock strata is higher, the reinforcing effect is better, and the roadway floor heave is handled. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the whole structure schematic diagram of the utility model;

[0014] Figure 2 It is the high-strength anchor rod of the utility model's Figure 1 Enlarged view.

[0015] In the drawing: 1, roadway;2, concrete;3, steel strand anchor cable;4, high-strength anchor rod;5, monorail hoist;6, air duct;7, belt conveyor;8, anchor point;9, anchor plate. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings of the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0017] Please refer to Figure 1 、 Figure 2The utility model provides an anchor note net sprays reverse arch bottom drum management structure, including roadway 1, the lower end of roadway 1 is paved with concrete 2, the inside of roadway 1 is provided with steel strand anchor cable 3, the inside of roadway 1 is provided with high -strength anchor rod 4, the inside top right part of roadway 1 is installed single -rail hoist 5, the outside of high -strength anchor rod 4 is provided with anchor point 8, and high -strength anchor rod 4 is provided with anchor plate 9 through nut outside.

[0018] Please refer to Figure 1 、 Figure 2 , the upper end left part of concrete 2 is installed with belt conveyor 7, anchor plate 9 contacts with roadway 1, and the outside of roadway 1 is paved with quicklime cushion, the top inside of roadway 1 and located the left part fixed mounting of single -rail hoist 5 are installed with air cylinder 6, and the bottom of roadway 1 is sprayed with 50mm thickness cushion, the number of steel strand anchor cable 3 is multiple, multiple steel strand anchor cable 3 is evenly distributed in the inside of roadway 1, and multiple steel strand anchor cable 3 is staggered and formed into steel mesh.

[0019] Please refer to Figure 1 , the number of high -strength anchor rod 4 is multiple, multiple high -strength anchor rod 4 is evenly distributed in the inside of roadway 1, multiple high -strength anchor rod 4 can increase the overall strength of roadway 1, the high -strength anchor rod 4 located at the bottom of roadway 1 is fixedly connected with concrete 2, the steel strand anchor cable 3 located at the bottom of roadway 1 is fixedly connected with concrete 2, and the high -strength anchor rod 4 at the bottom of roadway 1 is grouting anchor rod.

[0020] The utility model specific implementation process is as follows: through high -strength anchor rod 4, the weak rock stratum is connected with its lower stable rock stratum, the crack opening and the generation of new crack caused by the expansion of weak rock stratum are inhibited, and at the same time, the rock stratum can increase the bending strength after being reinforced by high -strength anchor rod 4, prevent the weak rock stratum from rising, the quicklime cushion can absorb moisture, and at the same time, solidify to form a certain strength isolation layer, further inhibit the occurrence of roadway 1 bottom drum, and through the concrete 2 to the bottom of roadway 1, the inside of roadway 1 can be more convenient to move.

[0021] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A structure for treating the arch and floor heave of a roof caused by the injection of a chemical into the roof, comprising a roadway (1), characterised in that: The lower end of the roadway (1) is paved with concrete (2), the inside of the roadway (1) is provided with steel strand anchor cable (3), the inside of the roadway (1) is provided with high-strength anchor rod (4), the inside top right of the roadway (1) is provided with monorail crane (5), the outside of the high-strength anchor rod (4) is provided with anchor point (8), the outside of the high-strength anchor rod (4) is provided with anchor plate (9) through nut.

2. The anchor-net-sprayed anti-arch heaving structure according to claim 1, characterized in that: The upper left of the concrete (2) is provided with belt conveyor (7), the anchor plate (9) is in contact with the roadway (1).

3. The anchor-net-sprayed anti-arch heaving structure according to claim 1, characterized in that: The inside top of the roadway (1) is fixedly provided with air duct (6) on the left of the monorail crane (5).

4. The anchor-net-sprayed anti-arch heaving structure according to claim 1, characterized in that: The number of the steel strand anchor cable (3) is multiple, and multiple steel strand anchor cables (3) are uniformly distributed in the inside of the roadway (1).

5. The anchor-net-sprayed anti-arch heaving structure according to claim 1, characterized in that: The number of the high-strength anchor rod (4) is multiple, and multiple high-strength anchor rods (4) are uniformly distributed in the inside of the roadway (1).

6. The anchor-net-sprayed anti-arch heaving structure according to claim 1, characterized in that: The high-strength anchor rod (4) at the bottom of the roadway (1) is fixedly connected with the concrete (2), and the steel strand anchor cable (3) at the bottom of the roadway (1) is fixedly connected with the concrete (2).

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