Tubular pile structure for treating heaving floor

Abstract

The utility model relates to the technical field of mining construction, in particular to a tubular pile structure for treating floor heaving, and aims to solve the problem of roadway floor heaving in the coal mining process. The pipe pile structure comprises a grouting assembly and a cross beam. The grouting assembly comprises a grouting pipe and an anchor rod; the beam is arranged on the upper portion of the grouting pipe. The interior of the grouting pipe is hollow, and a horizontal hole is formed in the side wall of the grouting pipe. The anchor rod is inserted into the upper part of the grouting pipe and extends out of the upper part of the grouting pipe; trays are arranged at the upper parts of the anchor rods; the lower portion of the tray abuts against the upper portion of the beam. After the cross beam and the grouting assembly which are assembled are inserted into an excavation working face, concrete slurry can be injected into the grouting pipe from the anchor rod under the action of pressure and flows out from the hole in the side wall of the grouting pipe, so that a stable supporting structure is formed in the excavation working face, and the stability of the bottom plate is greatly enhanced. Compared with a traditional grooving mode, the design can solve the problems fundamentally rather than only relieving the influence range and scale of the floor heave.

Description

Technical Field

[0001] This utility model relates to the field of mining construction technology, and in particular to a pipe pile structure for treating bottom heave. Background Technology

[0002] In mining operations, especially in deep coal mining, floor heave is a long-standing and significant problem hindering safe production. With increasing mining depth and intensity, this problem has become increasingly severe, seriously restricting coal mine output and operational safety. Floor heave is characterized by the upward bulging of the rock strata at the bottom of the roadway due to pressure. This not only affects normal transportation and ventilation systems but can also lead to roof instability, resulting in a series of safety accidents. Traditionally, floor heave has been addressed primarily through slotting to reduce pressure on the bottom rock strata. However, this method only temporarily reduces the amount of floor heave and does not fundamentally solve the problem. Moreover, floor heave often recurs over time, sometimes even more severely. Furthermore, slotting requires additional space, which is particularly difficult in narrow roadway environments and can damage the surrounding rock structure, further weakening the overall stability of the roadway. Utility Model Content

[0003] This utility model provides a pipe pile structure for treating floor heave, so as to alleviate the problem of floor heave in roadways during coal mining.

[0004] To alleviate the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0005] A pipe pile structure for treating bottom heave includes a grouting assembly and a crossbeam;

[0006] The grouting assembly includes grouting pipes and anchor bolts;

[0007] The crossbeam is located at the top of the grouting pipe;

[0008] The grouting pipe is hollow inside and has horizontal openings on its side walls;

[0009] The anchor bolt is inserted into the upper part of the grouting pipe and extends out from the upper part of the grouting pipe;

[0010] A tray is provided on the upper part of the anchor bolt;

[0011] The lower part of the pallet abuts against the upper part of the crossbeam.

[0012] Furthermore,

[0013] The crossbeam is equipped with openings that mate with the grouting pipe.

[0014] Furthermore,

[0015] The upper part of the grouting pipe is fitted with a grout stop plug;

[0016] The upper part of the grout stop plug abuts against the lower part of the crossbeam.

[0017] Furthermore,

[0018] The anchor bolt is hollow inside.

[0019] Furthermore,

[0020] There is a gap between the anchor bolt and the grouting pipe.

[0021] Furthermore,

[0022] A connecting sleeve is provided on the side wall of the grouting pipe.

[0023] Furthermore,

[0024] The lower part of the grouting pipe has a pointed tip.

[0025] Furthermore,

[0026] Multiple grouting components are installed on the upper part of the crossbeam.

[0027] Furthermore,

[0028] Multiple sets of openings are provided along the length of the grouting pipe.

[0029] Furthermore,

[0030] Multiple sets of openings are arranged in a ring array along the wall of the grouting pipe.

[0031] The beneficial effects of the pipe pile structure for treating bottom heave in this utility model are analyzed as follows:

[0032] This pipe pile structure includes a grouting assembly and a crossbeam; the grouting assembly includes a grouting pipe and an anchor rod; the crossbeam is located on the upper part of the grouting pipe; the grouting pipe is hollow inside and has horizontal openings on its side walls; the anchor rod is inserted into the upper part of the grouting pipe and extends out from the upper part of the grouting pipe; a tray is provided on the upper part of the anchor rod; the lower part of the tray abuts against the upper part of the crossbeam.

[0033] After the assembled crossbeams and grouting components are inserted into the mining face, concrete grout can be injected into the grouting pipes under pressure from the anchor bolts and flow out from the openings in the sidewalls of the grouting pipes, thus forming a stable support structure within the mining face and greatly enhancing the stability of the floor slab. Compared to the traditional slotting method, this design can fundamentally solve the problem, rather than merely mitigating the impact range and scale of floor heave. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 A schematic diagram of the installation structure of the pipe pile structure for treating bottom heave provided in this embodiment of the utility model;

[0036] Figure 2 This is a cross-sectional schematic diagram of the grouting assembly;

[0037] Figure 3 This is a schematic diagram of a grouting pipe with internal and external threaded connections.

[0038] icon:

[0039] 100 - Grouting assembly; 110 - Grouting pipe; 111 - Opening 111; 112 - Tip; 120 - Anchor bolt; 121 - Tray; 130 - Grout stop plug; 140 - Connecting sleeve;

[0040] 200-Crossbeam. Detailed Implementation

[0041] In conventional mining operations, especially with increased mining depth and intensity, floor heave becomes severe, significantly restricting coal mine output and safety. Furthermore, traditional methods for controlling floor heave have long relied on trenching, which only mitigates the impact and scale of floor heave to a certain extent, but cannot effectively solve the problem.

[0042] In view of this, such as Figures 1 to 3 As shown, this solution provides a pipe pile structure for treating bottom heave to alleviate the above-mentioned problems.

[0043] The pipe pile structure includes a grouting assembly 100 and a crossbeam 200;

[0044] Grouting assembly 100 includes grouting pipe 110 and anchor bolt 120;

[0045] The crossbeam 200 is located at the top of the grouting pipe 110;

[0046] The grouting pipe 110 is hollow inside and has horizontal openings 111 on its side walls;

[0047] The anchor bolt 120 is inserted into the upper part of the grouting pipe 110 and extends out from the upper part of the grouting pipe 110;

[0048] An anchor bolt 120 is provided with a tray 121 on its upper part;

[0049] The lower part of the pallet 121 abuts against the upper part of the crossbeam 200;

[0050] The crossbeam 200 is provided with an opening 111 that matches the grouting pipe 110;

[0051] Anchor bolt 120 is hollow inside;

[0052] There is a gap between the anchor bolt 120 and the grouting pipe 110.

[0053] Specifically, before constructing the pipe pile structure for treating the bottom heave, the grouting assembly 100 and the crossbeam 200 are assembled first. Then, holes are drilled into the mining face (such as the bottom plate of a coal mine). The assembled grouting assembly 100 and the crossbeam 200 are then inserted into the mining face, with the upper end face of the crossbeam 200 flush with the upper surface of the mining face. Concrete grout is then injected into the grouting pipe 110 through the anchor rod 120, filling the grouting pipe 110 and the anchor rod 120 with concrete grout. Under pressure, the concrete grout flows out from the opening 111 in the wall of the grouting pipe 110. After the filled concrete grout solidifies, the construction of the pipe pile structure is completed.

[0054] When injecting concrete grout, the concrete grout is injected from the grouting port at the top of the anchor rod 120 through an external grouting device, and flows out from the bottom of the anchor rod 120 to fill the grouting pipe 110. In order to fill all the gaps between the anchor rod 120 and the grouting pipe 110 with concrete grout, pressure filling should be applied.

[0055] In this design, the crossbeam 200 is not limited by material; it can be a rigid material (such as steel plate or galvanized plate) or a flexible material (such as polypropylene geotextile or ventilation duct fabric).

[0056] More preferably, a grout stop plug 130 is fitted onto the upper part of the grouting pipe 110;

[0057] The upper part of the grout stop plug 130 abuts against the lower part of the crossbeam 200 to prevent the grout from overflowing from the upper part of the injection pipe 110 when the concrete grout is pressurized and filled.

[0058] More preferably, such as Figure 2 As shown, a connecting sleeve 140 is provided on the side wall of the grouting pipe 110; the connecting sleeve 140 is provided with an internal thread that can be connected to the external threads of the two grouting pipes 110 respectively, so as to extend the length of the grouting pipe 140; in another embodiment, such as Figure 3 As shown, internal and external threads can also be provided at the ends of the two grouting pipes 110 respectively, so as to extend the length of the grouting pipes 110 by connecting them with each other by threads.

[0059] The lower part of the grouting pipe 110 has a pointed tip 112 to facilitate the insertion of the grouting pipe 110 into the mining face.

[0060] Preferably, the upper part of the crossbeam 200 is provided with multiple sets of grouting components 100, and the number of grouting components 100 can be adjusted according to the length of the mining face.

[0061] This solution has at least the following beneficial effects:

[0062] This solution offers an innovative pipe pile structure for addressing floor heave in roadways, with significant benefits. Firstly, as coal mining depth and intensity increase, traditional methods struggle to effectively address the increasingly severe floor heave problem. This pipe pile structure, through its scientifically designed construction, not only effectively solves this challenge but also significantly improves mine safety and production. Specifically, the unique combination of the grouting component 100 and the crossbeam 200 allows concrete grout to flow out from the openings in the sidewall of the grouting pipe 110 under pressure, forming a stable support structure within the working face and greatly enhancing the stability of the floor. Compared to traditional slotting methods, this design addresses the problem at its root, rather than merely mitigating the impact and scale of floor heave.

[0063] Furthermore, the design of this pipe pile structure demonstrates a high degree of flexibility and adaptability. For example, the crossbeam 200 can be made of rigid or flexible materials, selected according to actual needs; the length of the grouting pipe 110 can be adjusted via a connecting sleeve or direct threaded connection to adapt to working faces of different depths; and the design of the tip 112 facilitates the insertion of the grouting pipe into the strata. These characteristics allow the pipe pile structure to be flexibly adjusted according to different geological conditions and engineering requirements, greatly enhancing its practical value.

[0064] Finally, this solution ensures that all gaps between the anchor rod 120 and the grouting pipe 110 are fully filled by pressurizing and filling the concrete grout. This not only enhances the overall structural integrity, but also prevents the concrete grout from overflowing by using the grout stopper 130, further improving construction efficiency and quality.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pipe pile structure for treating bottom heave, characterized in that: comprising a grouting assembly (100) and a crossbeam (200); the grouting assembly (100) comprises a grouting pipe (110) and an anchor rod (120); the crossbeam (200) is arranged at the upper part of the grouting pipe (110); the grouting pipe (110) is hollow inside and the side wall is provided with horizontal openings (111); the anchor rod (120) is inserted into the upper part of the grouting pipe (110) and extends from the upper part of the grouting pipe (110); the upper part of the anchor rod (120) is provided with a tray (121); and the lower part of the tray (121) abuts against the upper part of the crossbeam (200).

2. The pipe pile structure for treating bottom heave according to claim 1, characterized in that: the crossbeam (200) is provided with openings (111) matched with the grouting pipe (110).

3. The pipe pile structure for treating bottom heave according to claim 2, characterized in that: the upper part of the grouting pipe (110) is sleeved with a grouting plug (130); and the upper part of the grouting plug (130) abuts against the lower part of the crossbeam (200).

4. The pipe pile structure for treating bottom heave according to claim 3, characterized in that: the anchor rod (120) is hollow inside.

5. The pipe pile structure for treating bottom heave according to claim 4, characterized in that: there is a gap between the anchor rod (120) and the grouting pipe (110).

6. The pipe pile structure for treating bottom heave according to claim 5, characterized in that: the side wall of the grouting pipe (110) is provided with a connecting sleeve (140).

7. The pipe pile structure for treating bottom heave according to claim 6, characterized in that: the lower part of the grouting pipe (110) has a pointed end (112).

8. The pipe pile structure for treating bottom heave according to claim 7, characterized in that: the upper part of the crossbeam (200) is provided with multiple groups of the grouting assembly (100).

9. The pipe pile structure for treating bottom heave according to claim 8, characterized in that: multiple groups of openings (111) are arranged along the length direction of the grouting pipe (110).

10. The pipe pile structure for treating bottom heave according to claim 9, characterized in that: multiple groups of openings (111) are arranged in a ring array along the pipe wall of the grouting pipe (110). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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