Orifice water collecting and guiding device for coal mine tunnel roof drilling

Abstract

The utility model discloses an orifice water collecting and guiding device for coal mine tunnel roof drilling, belongs to the technical field of coal mine drilling drainage, and can solve the problems that in the existing coal mine underground tunnel roof drilling construction process, water flows out of a drill hole after passing through a drill bit, scatters in a tunnel or wets equipment and personnel below the drill hole, the service life of the equipment and the working conditions of workers are affected, and the like. Comprising an inverted-truncated-cone-shaped water collecting cover, the top end of the water collecting cover is open, the bottom of the water collecting cover is closed, a plurality of hooks are arranged on the edge of the top of the water collecting cover, a hole is formed in the center of the bottom of the water collecting cover, a sleeve for a drill rod to penetrate through is connected to the hole, one end of the sleeve is located in the water collecting cover, and a water outlet is formed in one end of the bottom of the water collecting cover. A connecting pipe is arranged at the water outlet, and the bottom of the connecting pipe is connected with a water drainage pipe through a quick plug. By means of the device, water flowing out of a drilling opening in the wet-type drilling process of the roadway roof can be collected in real time, and effective management and safe leading-out of water flow in the drilling process are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal mine drilling drainage technical field, concretely relates to a kind of orifice water-collecting and flow-guiding devices of coal mine roadway roof drilling. BACKGROUND

[0002] In the process of coal mining, roadway roof support is an important link to ensure the safety production of mine. Among them, a large number of anchor rods and anchor cables in roof construction are common roadway roof support methods. In order to protect the construction quality and efficiency, wet drilling process is usually used for drilling operation of roof anchor rod and anchor cable installation hole. However, this construction process has some significant problems in practical application. Specifically, when water is wet drilled through the drill bit, water will flow out of the drilling hole. On the one hand, these outflowing water will scatter in the roadway, causing the roadway ground to be slippery and the working environment to deteriorate. In order to deal with this problem, a special water collection pit and drainage ditch are usually constructed underground to collect and treat the scattered water, which not only increases the construction cost, but also occupies the roadway space, affecting the mine personnel and transportation. On the other hand, when drilling anchor rod and anchor cable installation hole in roadway roof, water flows down from the drilling hole, directly wetting the drilling machine equipment and operators below the drilling hole. For equipment, long-term water soaking will cause its internal parts to be damp and corroded, thereby affecting the service life and performance of the drilling machine equipment. For operators, being soaked by water not only reduces work efficiency, but also may cause occupational diseases such as rheumatism, thereby deteriorating the working conditions of workers and affecting the health of workers.

[0003] Therefore, there is an urgent need for a device that can effectively collect and guide the water flowing out of the drilling hole to improve the working environment of coal mine roadway roof drilling construction, improve the service life of the drilling machine equipment, and protect the working conditions of workers. UTILITY MODEL CONTENT

[0004] The utility model provides an orifice water-collecting and flow-guiding device for coal mine roadway roof drilling, which collects water flowing out of the hole in real time with drilling and directly discharges the collected water into the water sump through pipeline.

[0005] The utility model adopts the following technical solutions:

[0006] The utility model provides a kind of orifice water collection and diversion device of coal mine roadway roof drilling, including inverted cone shape water collection cover, the top of the water collection cover is open, bottom is closed, the top edge of water collection cover is equipped with several hooks, the bottom center of water collection cover is equipped with opening, opening is connected with the sleeve for drill rod to pass through, the sleeve is located inside water collection cover, the bottom one end of water collection cover is equipped with drainage port, drainage port is equipped with connecting pipe, the bottom of connecting pipe is connected with drain pipe by quick plug.

[0007] Further, the top of the water collection cover is open with a diameter of 0.5 m, the bottom closed end is 0.25 m in diameter, and the height of the water collection cover is 0.3 m.

[0008] Further, the number of hooks is four, arranged at equal intervals along the top edge of the water collection cover.

[0009] Further, the height of the sleeve is 0.15 m.

[0010] Further, the other end of the sleeve extends out of the water collection cover.

[0011] Further, a filter screen is provided at the drainage port.

[0012] Further, the other end of the drain pipe extends into a water sump located in the coal mine roadway.

[0013] The utility model has the following beneficial effects:

[0014] By using the utility model, water flowing from the drilling orifice during the wet drilling process of the roadway roof can be collected in real time, effectively managing and safely discharging the water flow during drilling, effectively preventing water from scattering into the roadway or wetting the drill rig and personnel below the drill hole, thereby significantly improving the working environment for drilling in coal mines, prolonging the service life of the drill rig, and ensuring the working conditions of workers, providing an efficient and practical technical solution for the coal mining industry. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 is an assembly schematic diagram of the utility model;

[0017] Wherein: 1-water collection cover; 2-hook; 3-sleeve; 4-drainage port; 5-filter screen; 6-drain pipe; 7-roadway roof; 8-wire mesh; 9-drill hole; 10-drill rod; 11-water; 12-drill rig; 13-operator; 14-water sump. DETAILED DESCRIPTION

[0018] The utility model is further described in conjunction with the drawings.

[0019] As shown in the figure, a kind of coal mine roadway roof borehole orifice catchment diversion device, including inverted round platform shape catchment cover 1, the top of the catchment cover 1 is open, bottom is closed, the top edge of catchment cover 1 is equipped with several hooks 2, the bottom center of catchment cover 1 is equipped with opening, opening is connected with the sleeve pipe 3 for drill rod to pass through, the sleeve pipe 3 is located inside catchment cover 1, the bottom of catchment cover 1 is equipped with drainage port 4, drainage port 4 is equipped with connecting pipe, the bottom of connecting pipe is connected with drainage pipe 6 through quick connector, the drainage port 4 is equipped with filter screen 5.

[0020] Wherein, the catchment cover 1 is used to gather and store the water from the borehole orifice, the top of the catchment cover 1 is open with diameter D1 of 0.5 meters, the bottom of the catchment cover 1 is closed with diameter D2 of 0.25 meters, the height H1 of the catchment cover 1 is 0.3 meters, the material of the catchment cover 1 is corrosion-resistant high-strength stainless steel, the cover wall thickness d1 of the catchment cover 1 is 3 millimeters.

[0021] The hook 2 is set at 90 degrees interval around the top of the catchment cover 1, and the hook 2 is used to hang the catchment cover 1 to the wire mesh 8 on the roadway roof. The material of the hook 2 is corrosion-resistant high-strength stainless steel, which can bear the weight of the orifice catchment diversion device.

[0022] The sleeve pipe 3 is a section of steel pipe welded at the bottom center of the catchment cover 1, and the drill rod 10 passes through the sleeve pipe 3 during drilling construction to prevent water leakage in the catchment cover 1. The wall thickness d2 of the sleeve pipe 3 is 5 millimeters, the inner diameter D3 of the sleeve pipe 3 is 34 millimeters, the outer diameter D4 is 44 millimeters, and the height H2 is 0.15 meters. The height H 2-1 of the sleeve pipe 3 into the catchment cover 1 is 0.1 meters, and the height H 2-2 of the sleeve pipe 3 outside the catchment cover 1 is 0.05 meters. The diameter D5 of the drill rod for installing anchor rod and anchor cable in coal mine underground construction is 28 millimeters, and there is a 3 millimeter gap between the drill rod 10 and the inner wall of the sleeve pipe 3 to avoid friction between them during rotation.

[0023] The drainage port 4 is located at the bottom of the catchment cover 1, 0.02 meters away from the outer wall of the sleeve pipe 3, and a steel pipe with a diameter D6 of 32 millimeters is welded at the drainage port 4. The top of the steel pipe is flush with the bottom of the catchment cover 1 and is fixed by welding, and the bottom of the steel pipe is a quick connector for quickly and efficiently connecting the drainage pipe 6.

[0024] The filter screen 5 is a layer of metal filter screen set at the drainage port 4 in the catchment cover 1 to prevent debris from blocking the drainage port 4. The water in the catchment cover 1 passes through the filter screen 5 before entering the drainage port 4.

[0025] The drain pipe 6 is a rubber hose with an inner diameter D7 of 32 mm, one end of the drain pipe 6 is connected with a steel pipe at the drain port by using a quick plug, and the other end drains water to a designated water tank 14.

[0026] The use method of the utility model is as follows:

[0027] (1) Determine the opening position of the drill hole

[0028] On the roof of the coal mine tunnel, according to the mining plan and safety specification, the opening position of the drill hole is accurately determined. This step needs to be performed by experienced technical personnel to ensure the accuracy and safety of the drill hole position.

[0029] (2) Install the drill rod and the water collecting cover

[0030] Pass the drill rod through the drill rod sleeve at the bottom of the water collecting cover, use the lifting function of the drilling machine to raise the drill rod to the predetermined drill hole opening position. Use the water collecting cover hook to stably hang the water collecting cover on the wire mesh of the tunnel roof, ensuring the stability and safety of the water collecting cover during the drilling process.

[0031] (3) Start the drilling machine to start the drilling operation

[0032] Open the water inlet valve of the drilling machine to allow water to flow smoothly into the drill rod. The water flows through the drill rod and reaches the drill bit, providing necessary cooling and lubrication for the drill bit. Start the drilling machine to drive the drill rod to rotate and advance upward, starting the drilling operation. During this process, the water flows through the drill rod to the drill bit, providing necessary cooling and lubrication for the drill bit, and carrying away the debris generated during the drilling process.

[0033] (4) Water flow collection and diversion

[0034] During the drilling process, the water flow and the carried debris flow out of the drill hole and directly fall into the water collecting cover. The design of the water collecting cover ensures the comprehensive collection of water flow and prevents water from flowing everywhere. The water accumulated inside the water collecting cover flows out through the pre-set drain port and enters the connected drain pipe. The drain pipe is responsible for safely and orderly draining the collected water flow into the designated water tank.

[0035] (5) Continuous monitoring and adjustment

[0036] During the entire drilling operation process, continuously monitor the working state of the water collecting cover to ensure smooth water flow and no leakage. According to the drilling progress and water flow conditions, timely adjust the operation parameters of the drilling machine and the position of the water collecting cover to optimize the operation efficiency and safety.

Claims

1. A borehole orifice catchment diversion device for coal mine roadway roof drilling, characterised in that: The utility model provides a water collecting cover (1) including inverted round trapezoidal shape, the top of water collecting cover (1) is open, bottom is closed, and the top edge of water collecting cover (1) is equipped with several hooks (2), and the bottom center of water collecting cover (1) is equipped with an opening, and the opening is connected with the sleeve (3) for the drill rod to pass through, one end of the sleeve (3) is located inside water collecting cover (1), and one end of the bottom of water collecting cover (1) is equipped with the drain port (4), and the drain port (4) is equipped with the connecting pipe, and the bottom of the connecting pipe is connected with the drain pipe (6) through the quick plug.

2. The orifice water collecting and conducting device for drilling the roof of a coal mine roadway according to claim 1, characterized in that: The top open diameter of the water collecting cover (1) is 0.5 m, the bottom closed end diameter is 0.25 m, and the height of the water collecting cover (1) is 0.3 m.

3. The orifice water collecting and conducting device for drilling the roof of a coal mine roadway according to claim 1, characterized in that: The number of hooks (2) is four, and they are arranged at equal intervals along the top edge of the water collecting cover (1).

4. The orifice catchment and diversion device for drilling a coal mine roadway roof bore according to claim 1, characterised in that: The height of the sleeve (3) is 0.15 m.

5. The orifice catchment and flow guiding device for drilling a coal mine roadway roof borehole according to claim 1, characterised in that: The other end of the sleeve (3) extends out of the water collecting cover (1).

6. The orifice catchment and diversion device for drilling a coal mine roadway roof bore according to claim 1, characterised in that: A filter screen (5) is provided at the drain port (4).

7. The orifice catchment and diversion device for drilling a coal mine roadway roof bore according to claim 1, characterised in that: The other end of the drain pipe (6) extends into a water sump (14) in a coal mine tunnel.

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