Liftable water blocking door for coal mine shaft

Abstract

The application discloses a liftable water-blocking door for a coal mine shaft and relates to the technical field of mine roadway water blocking, which comprises an I-steel base arranged at the bottom of a mine roadway, two I-steel door frames arranged on the I-steel base, a foundation pit groove arranged on one side of the mine roadway of the I-steel base, a foundation frame arranged on the inner wall of the foundation pit groove, the lower part of a water-blocking door connected to the inner side of the front end of the foundation frame through a hinge seat, an oil cylinder base arranged at the bottom of the front end of the foundation frame, the upper part of the water-blocking door hinged to the oil cylinder base through an extension oil cylinder, the I-steel door frames fixed on the inner wall of the mine roadway through a channel steel support frame and then filled and poured with a concrete layer to be firm, and the foundation pit groove arranged on one side of the mine roadway of the I-steel base, the door plate assembly and the water-blocking door assembly installed in the foundation pit groove, so as to form a hydraulic water-blocking door with lifting capacity, which is closely combined with the I-steel door frame when lifted to play a water-blocking role, and is substantially horizontal with the ground when lowered, thus not hindering personnel walking and material carrying.

Description

Technical Field

[0001] This invention relates to the field of mine roadway water-blocking technology, and in particular to a liftable water-blocking gate for coal mines. Background Technology

[0002] In mining operations, various water sources flow into the mine through various water passages. Mine water hazards are classified into several types according to different geological conditions, including roof water, floor water, old workings water, and surface water. Mine water hazards are a significant hidden danger threatening production safety, characterized by their suddenness and wide range of impact. Based on the analysis of the sources of mine water hazards and the safe water pressure tolerance, and in accordance with the "Design Code for Underground Coal Mine Yards and Chambers" and the "Design Code for Water Control in Coal Mines," a water-retaining wall was adopted to address mine water hazards. A one-meter-high water-retaining wall was constructed on-site using bricks. The main function of the water-retaining wall is to block the water passages and prevent large water inrush points in neighboring mines or this mine from flowing into this mine. As a method to solve mine water hazards, it has the advantages of simple construction technology, no site restrictions, and ease of construction.

[0003] Chinese patent application CN202220007150.5 discloses a novel water-retaining wall for mine roadways, comprising a grout-stopping wall and a water-retaining wall. The grout-stopping wall is cast and installed on the water-facing side of the mine roadway, while the water-retaining wall is cast and installed on the back side of the mine roadway, with the back side as the front and the water-facing side as the rear. The front side of the grout-stopping wall and the rear side of the water-retaining wall are integrally connected, and the grout-stopping wall and the water-retaining wall are in full contact with and anchored to the surrounding rock of the mine roadway. Although it meets the requirements of the document, it is inconvenient for personnel to walk and for materials to be transported, causing many inconveniences on site. Summary of the Invention

[0004] In order to overcome the shortcomings of existing water-retaining walls that hinder personnel movement and material handling, this invention provides a liftable water-retaining gate for coal mines, which allows the water-retaining gate to be raised and lowered, facilitating on-site application.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a liftable water gate for coal mines, including an I-beam base set at the bottom of the mine roadway, two I-beam door frames on the I-beam base, a foundation pit on one side of the mine roadway, a foundation frame on the inner wall of the foundation pit, the lower part of the water gate being connected to the inner side of the front end of the foundation frame via a hinge seat, and a hydraulic cylinder base at the bottom of the front end of the foundation frame, the upper part of the water gate being hinged to the hydraulic cylinder base via a telescopic hydraulic cylinder.

[0006] As a further improvement of the present invention, two I-beam steel door frames are symmetrically arranged around the center of the mine roadway, and each I-beam steel door frame is fixed to the inner wall of the mine roadway by a channel steel support frame, thereby improving the stability of the I-beam steel door frame.

[0007] As a further improvement of the present invention, a concrete layer is provided between the I-beam steel frame and the mine roadway to improve the stability of the I-beam steel frame.

[0008] As a further improvement of the present invention, the ground of the mine roadway is provided with slots, and the lower part of the I-beam base is provided with a slot column, which is tightly inserted into the slot, thereby improving the stability of the I-beam base.

[0009] As a further improvement to the present invention, the base frame is a square base frame, with one side of the base frame welded to an I-beam base. The base frame is fitted with a water-retaining gate, which helps to ensure a tight seal.

[0010] As a further improvement of the present invention, the foundation pit is an inverted convex pit, and the foundation frame is snapped onto the step of the inverted convex pit. The foundation pit is used to fix the foundation frame and improve the stability of the overall structure.

[0011] As a further improvement of the present invention, a support frame is provided on the inner side of the base frame for supporting the water-blocking gate.

[0012] As a further improvement of the present invention, a sealing gasket is provided on the base of the I-beam between the two I-beam door frames to improve the sealing performance.

[0013] As a further improvement of the present invention, sealing strips are provided on the two I-beam door frames to improve sealing performance.

[0014] Compared with the prior art, the present invention has the following advantages: In this solution, the I-beam steel door frame is fixed to the inner wall of the mine roadway by a channel steel support frame and then firmly filled with concrete. Then, a foundation pit is provided on one side of the mine roadway of the I-beam steel base, and the door panel assembly and water-blocking door assembly are installed in the foundation pit, thereby forming a hydraulic water-blocking door with lifting capability. When raised, it is tightly combined with the I-beam steel door frame to block water. When lowered, it is roughly horizontal with the ground, which does not hinder personnel walking and material handling. The whole system is easy to install and has significant effects in field use. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a first cross-sectional view of the present invention.

[0017] Figure 2 This is a second cross-sectional view of the present invention.

[0018] Figure 3 This is the third cross-sectional view of the present invention.

[0019] Figure 4 This is a schematic diagram of the connection between the water-blocking gate and the foundation frame of the present invention.

[0020] In the diagram: 1. Mine roadway; 2. I-beam frame; 3. Channel steel support frame; 4. Concrete layer; 5. I-beam base; 6. Slot; 7. Slot column; 8. Foundation pit; 9. Foundation frame; 10. Bearing frame; 11. Hinge seat; 12. Water gate; 13. Hydraulic cylinder base; 14. Telescopic hydraulic cylinder; 15. Sealing gasket; 16. Sealing strip. Detailed Implementation

[0021] To make the technical solution and beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments.

[0022] Reference Figures 1 to 4 This invention discloses a liftable water gate for coal mines, including an I-beam base 5 installed at the bottom of a mine roadway 1, two I-beam door frames 2 on the I-beam base 5, a foundation pit 8 on one side of the mine roadway 1, a foundation frame 9 on the inner wall of the foundation pit 8, the lower part of the water gate 12 being connected to the inner front end of the foundation frame 9 via a hinge seat 11, and a hydraulic cylinder base 13 being installed at the bottom front end of the foundation frame 9, the hydraulic cylinder base 13 being hinged to the upper part of the water gate 12 via a telescopic hydraulic cylinder 14.

[0023] Two I-beam frame gates 2 are symmetrically arranged around the center of the mine roadway 1. Each I-beam frame 2 is fixed to the inner wall of the mine roadway 1 by a channel steel support frame 3. A concrete layer 4 is provided between the I-beam frame gates 2 and the mine roadway 1. The ground of the mine roadway 1 has slots 6, and the lower part of the I-beam base 5 has a slotted column 7. The slotted column 7 is tightly inserted into the slot 6 to form a complete gate frame system, improving the overall structural stability.

[0024] The foundation frame 9 is a square foundation frame, with one side welded to the I-beam base 5. The foundation pit 8 is an inverted convex pit, and the foundation frame 9 is snapped onto the step of the inverted convex pit. The inner side of the foundation frame 9 is provided with a bearing frame 10, forming a foundation frame structure system for supporting the water-blocking gate assembly and improving the overall structural stability.

[0025] A sealing gasket 15 is provided on the I-beam base 5 between the two I-beam door frames 2. A sealing strip 16 is provided on the two I-beam door frames 2. The sealing gasket 15 and the sealing strip 16 work together to ensure that the door frame assembly fits tightly with the water-stopping door, thereby improving the overall sealing performance.

[0026] This system mainly consists of a door frame assembly, a foundation frame assembly, and a water-blocking gate assembly. A sealing gasket 15 is installed on the I-beam base 5, and a sealing strip 16 is installed on the I-beam door frame 2. The I-beam door frame 2 is fixed to the inner wall of the mine roadway 1 by a channel steel support frame 3 and then firmly reinforced with a concrete layer 4. A foundation pit 8 is provided on one side of the mine roadway 1, and the door panel assembly and water-blocking gate assembly are installed in the foundation pit 8, thus forming a hydraulic water-blocking gate with lifting capabilities. A button is fixed on one side of the water-blocking gate to control the hydraulic station, enabling the water-blocking gate to rise and fall. When raised, it tightly engages with the I-beam door frame 2, serving as a water-blocking mechanism. When lowered, it is approximately level with the ground, not obstructing personnel movement or material handling. The entire system is easy to install and demonstrates significant effectiveness in field use.

[0027] It should be understood that the specific embodiments described herein are for understanding the present invention only and are not intended to limit the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A liftable water gate for a coal mine shaft, characterized in that: I. The utility model provides a kind of water gate, including the I-beam base (5) being arranged in the bottom of mine roadway (1), two I-beam door frames (2) are equipped on I-beam base (5), foundation pit groove (8) is equipped on the one side of mine roadway (1) of I-beam base (5), foundation frame (9) is equipped on the inner wall of foundation pit groove (8), the lower part of water gate (12) is connected by hinged seat (11) in the front end inner side of foundation frame (9), the bottom of the front end of foundation frame (9) is equipped with oil cylinder base (13), and the upper part of water gate (12) is articulated by telescopic oil cylinder (14) of oil cylinder base (13); Two I-beam door frames (2) are symmetrically arranged with the center of mine roadway (1), and each I-beam door frame (2) is fixed on the inner wall of mine roadway (1) by channel steel support frame (3); Concrete layer (4) is arranged between I-beam door frame (2) and mine roadway (1); The ground of mine roadway (1) is provided with slot hole (6), and the lower part of I-beam base (5) is provided with slot column (7), which is tightly inserted into slot hole (6); Foundation frame (9) is square foundation frame, and the one side of foundation frame (9) is welded with I-beam base (5); Foundation pit groove (8) is inverted convex pit groove, and foundation frame (9) is clamped on the step of inverted convex pit groove; The inner side of foundation frame (9) is provided with bearing frame (10).

2. The liftable water blocking door for coal mine shaft according to claim 1, characterized in that: Sealing pad (15) is arranged on the I-beam base (5) between two I-beam door frames (2).

3. The liftable water blocking door for coal mine shaft according to claim 2, characterized in that: Sealing strip plate (16) is arranged on two I-beam door frames (2).

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