Steel arch for closing and repairing the wellhead of the middle section of the empty well in a metal mine

Abstract

The utility model relates to the technical field of mining production, concretely relates to a steel arch frame for the closed repair of the well mouth of the well cap in the middle section of the metal mine empty well to solve the problem that the mining production efficiency is limited due to the lack of efficient and safe well shaft supporting arch frame in the process of the repair of the mining well shaft at present. The steel arch frame comprises symmetrical communication passage arch legs, a communication passage arch crown is arranged between the communication passage arch legs, the side portion of the communication passage arch leg is provided with a well mouth arch leg, a well mouth arch crown is arranged between the well mouth arch legs, a plurality of drill rods are connected between the communication passage arch crown and the well mouth arch crown, a steel pipe is sleeved in the drill rod, a simply supported beam is formed by the steel arch frame and the steel pipe with staggered sizes and sections at the well mouth, the well mouth is closed by the hooking and connecting mesh sheet, and finally the well shaft filling is completed by spraying concrete, embedding ventilation and filling pipelines, the construction supporting structure is optimized, the low construction efficiency, the poor supporting effect and the big safety hidden danger of the well shaft repair are effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of mining production technology, specifically to a steel arch frame for sealing and repairing the wellhead of the middle section of an empty mine shaft. Background Technology

[0002] During mining operations, as time progresses and mining activities continue, shafts may deform or break, affecting normal production and operational safety. Existing shaft repair processes generally suffer from low efficiency, poor support effectiveness, and significant safety hazards. For example, traditional support methods are ill-suited to complex shaft deformation, resulting in insufficient stability after repair. Furthermore, the lack of effective safety measures during construction increases the risk of accidents such as shaft collapse. Utility Model Content

[0003] This utility model provides a steel arch frame for sealing and repairing the wellhead of the middle section of an empty shaft in a metal mine, in order to solve the problems mentioned above.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A steel arch frame for sealing and repairing the wellhead of a mid-section of an empty shaft in a metal mine includes connecting tunnel arch legs symmetrically arranged at one end, a connecting tunnel arch top spanning between the connecting tunnel arch legs, wellhead arch legs symmetrically arranged parallel to the sides of the connecting tunnel arch legs, a wellhead arch top spanning between the wellhead arch legs, and a pair of drill rods connected between the connecting tunnel arch tops and the wellhead arch tops, with steel pipes sleeved inside each drill rod.

[0006] Furthermore, the portions of the connecting tunnel arch legs and connecting tunnel arch tops that are fitted together are clamped by a first clamping plate, and the portions of the wellhead arch legs and wellhead arch tops that are fitted together are clamped by a second clamping plate.

[0007] This utility model has the following beneficial effects:

[0008] This utility model provides a steel arch frame for the sealing and repair of the wellhead in the middle section of an empty mine shaft. It includes symmetrically arranged connecting tunnel arch legs, a connecting tunnel arch spanning between the connecting tunnel arch legs, and wellhead arch legs on the sides of the connecting tunnel arch legs. A wellhead arch spans between the wellhead arch legs, and multiple drill rods connect the connecting tunnel arch and the wellhead arch. Each drill rod is fitted with a steel pipe. By using steel arch frames with staggered cross-sections at the wellhead to form a simply supported beam with the steel pipes, a mesh is connected to seal the wellhead and complete the wellhead sealing. Finally, shotcrete is applied, and ventilation and filling pipelines are pre-embedded to complete the well filling. This optimized construction support structure effectively avoids the problems of low construction efficiency, poor support effect, and significant safety hazards in well shaft repair. It solves the problem of limited mining production efficiency caused by the lack of efficient and safe well shaft support arch frames during current mining shaft repair processes. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0010] Figure 2 This is a schematic diagram illustrating the overall structure and application effect of this utility model.

[0011] The meanings of the reference numerals in the attached figures are as follows:

[0012] 1. Connecting tunnel arch leg; 2. Wellhead arch leg; 3. Connecting tunnel arch top; 4. Wellhead arch top; 5. First clamping plate; 6. Second clamping plate; 7. Drill rod; 8. Steel pipe. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] like Figure 1-2 As shown, a steel arch frame for sealing and repairing the wellhead of a metal mine empty shaft includes connecting tunnel arch legs 1 symmetrically arranged at one end, connecting tunnel arch tops 3 spanning between the connecting tunnel arch legs 1, wellhead arch legs 2 symmetrically arranged parallel to the sides of the connecting tunnel arch legs 1, wellhead arch tops 4 spanning between the wellhead arch legs 2, and a pair of drill rods 7 connecting the connecting tunnel arch tops 3 and the wellhead arch tops 4, with steel pipes 8 sleeved inside each drill rod 7.

[0015] The parts where the connecting tunnel arch leg 1 and the connecting tunnel arch crown 3 are fitted are clamped by the first clamping plate 5, and the parts where the wellhead arch leg 2 and the wellhead arch crown 4 are fitted are clamped by the second clamping plate 6.

[0016] In practical use, this utility model first symmetrically sets up two connecting tunnel arch legs 1, then installs a connecting tunnel arch top 3 spanning between the connecting tunnel arch legs 1, and installs a wellhead arch leg 2 on the side of the connecting tunnel arch legs 1. A wellhead arch top 4 spans between the wellhead arch legs 2, and multiple drill rods 7 are installed between the connecting tunnel arch top 3 and the wellhead arch top 4. Each drill rod 7 is fitted with a steel pipe 8. Finally, at the wellhead, a steel arch frame with staggered cross-sections of different sizes is used to form a simply supported beam with the steel pipe 8. The mesh is then used to seal the wellhead and complete the wellhead sealing. Finally, shotcrete is sprayed, ventilation and filling pipelines are pre-embedded to complete the well filling. By optimizing the construction support structure, the low efficiency, poor support effect and high safety hazards of well repair construction are effectively avoided. This solves the problem that the lack of efficient and safe well support arch frames in the current mining well repair process leads to limited mining production efficiency. Therefore, this steel arch frame has good practicality.

Claims

1. A steel arch frame for sealing and repairing the wellhead of a mid-section of an empty shaft in a metal mine, characterized in that: It includes a connecting tunnel arch leg (1) symmetrically arranged at one end, a connecting tunnel arch top (3) spanning between the connecting tunnel arch legs (1), a wellhead arch leg (2) symmetrically arranged on the side of the connecting tunnel arch leg (1), a wellhead arch top (4) spanning between the wellhead arch legs (2), and multiple drill rods (7) connected between the connecting tunnel arch top (3) and the wellhead arch top (4), and each drill rod (7) is fitted with a steel pipe (8).

2. The steel arch frame for sealing and repairing the wellhead of a mid-section of an empty mine shaft according to claim 1, characterized in that: The connecting tunnel arch leg (1) and connecting tunnel arch top (3) are fitted with a first clamping plate (5), and the wellhead arch leg (2) and wellhead arch top (4) are fitted with a second clamping plate (6).

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