Reusable underground roadway water inflow measuring device

Abstract

The utility model discloses a reusable underground roadway water inflow measuring device which can be embedded in a drainage ditch and guide gushing water in the drainage ditch to flow through the inside of the measuring device, and the measuring device comprises a water level gauge and a flow velocity measuring component in contact with the gushing water. The measuring device disclosed by the utility model can be quickly embedded and placed in the drainage ditch, the gushing water in the drainage ditch is guided to flow through the inside of the measuring device, the water level height and the water flow velocity can be quickly read through the water level gauge and the flow velocity measuring component in contact with the gushing water, and the water gushing amount data of the drainage ditch can be obtained through calculation. The measuring device has the advantages of being fast in assembly, capable of being transferred for use and capable of fast measuring and calculating the water inflow at different positions, and the convenience of water inflow measuring operation is improved.

Description

Technical Field

[0001] This application relates to the field of mine roadway water inflow measurement technology, and in particular to a reusable underground roadway water inflow measurement device. Background Technology

[0002] Mine water inflow refers to the total amount of various types of water flowing into mine roadways. This water may include surface water, fissure water, karst water, etc., and is a crucial technical condition in coal mine development, significantly impacting mine safety. Sources of water inflow include production water, atmospheric precipitation, surface water, and groundwater. Large water inflows can lead to localized production interruptions, and in severe cases, even require the entire mine to shut down. To address mine water inflows, drainage and flood control facilities and equipment must be installed, increasing workload and production costs. Water inflows also increase underground humidity, worsening the working environment and affecting production efficiency and worker health. Furthermore, they can cause mine flooding accidents, equipment damage, and increased difficulty in support and maintenance. Therefore, mines must implement effective prevention and control measures to address water inflow problems and ensure safe production and environmental protection.

[0003] With the continuous increase in the scale of underground mining, effective and convenient measurement of underground roadway water inflow is crucial for observing the impact of mining disturbance on groundwater, monitoring changes in water inflow, obtaining water inflow data at different times, and calculating the total water inflow of the mine. Currently, mine water inflow measurement mainly includes the pump displacement method and the float flow measurement method. The pump displacement method calculates water inflow by utilizing the actual discharge volume of the pump and the pump operating time, but it is only suitable for sections of flowing water with uniform and stable flow, straight channels, and regular and complete patterns. The float method involves setting up three cross-sections (upper cross-section, basic cross-section, and lower cross-section) at equal intervals in the measured area, and measuring the cross-sectional area of ​​each cross-section. A float is deployed near the upstream of the upper cross-section, and the time it takes for the float to travel from the upper cross-section to the lower cross-section is measured to determine the flow velocity. The water inflow is calculated based on the flow velocity and cross-sectional area. However, the measurement process is relatively complex and difficult to quickly measure water inflow over a single time period. Summary of the Invention

[0004] To address the aforementioned problems, this application aims to provide a reusable underground roadway water inflow measurement device that can be quickly embedded in a drainage ditch. Through a water level gauge and a flow velocity measuring component in contact with the water inflow, the device can quickly read the water level height and water flow velocity, and then calculate the water inflow data of the ditch.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a reusable underground roadway water inflow measurement device, wherein a drainage ditch is excavated on one side of the underground roadway, the measurement device can be embedded in the drainage ditch and guide the water inflow in the drainage ditch to flow through the inside of the measurement device, the measurement device includes a water level gauge and a flow velocity measuring component in contact with the water inflow.

[0006] Preferably, the measuring device is a measuring tank with a V-shaped right-angle structure, the water level gauge is set on one side wall inside the measuring tank, and tie rods are provided at intervals on the top side of the measuring tank. The flow velocity measuring component is set on the tie rod located in the middle and can contact the gushing water in the measuring tank.

[0007] Preferably, positioning screws that can abut against the inner wall of the drainage ditch are provided on both outer walls of the measuring groove.

[0008] Preferably, a support rod is hinged to the top of the outer side of the measuring tank, and an extendable and retractable baffle is connected between the support rod and the side wall of the measuring tank.

[0009] The beneficial effects of this application are: the measuring device can be quickly embedded in a drainage ditch, guiding the gushing water in the ditch through its interior. Using a water level gauge and a flow velocity measuring component in contact with the gushing water, the water level height and flow velocity can be quickly read. After calculation, the ditch's gushing water volume data can be obtained. This measuring device is quick to assemble and transfer, and can quickly measure and calculate the gushing water volume at different locations, improving the convenience of gushing water volume measurement operations. Attached Figure Description

[0010] Figure 1 This is a diagram showing the current structure of drainage ditches in mine roadways.

[0011] Figure 2 This is a top view of the measuring device used in this application.

[0012] Figure 3 This is a front view structural diagram of the measuring device of this application.

[0013] Figure 4 This is a structural diagram of the measuring device of this application assembled in a drainage ditch.

[0014] Figure 5 For this application Figure 4 Enlarged view of the structure at point A in the middle.

[0015] Figure 6 A diagram illustrating the positioning screw structure for this application is provided.

[0016] Figure 7 This illustration shows the sealing of the gap between the measuring groove and the drainage ditch in this application.

[0017] Figure 8 This is a schematic diagram of the structure of the water baffle plate installed on the outside of the measuring tank in this application.

[0018] Figure 9 This is a diagram illustrating the extension and retraction structure of the water baffle in this application.

[0019] Figure 10 This is a diagram illustrating how the water baffle of this application seals the gap between the measuring groove and the drainage ditch.

[0020] In the diagram: 51 - threaded sleeve; 8 - flow meter. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions of this application will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] See attached document Figures 1-10 The invention illustrates a reusable underground roadway water inflow measurement device. A drainage ditch 1a is excavated on one side of the underground roadway 1, and the water inflow from the underground roadway flows into the drainage ditch 1a and is discharged outside the mine. To address the difficulties encountered in current water inflow measurement methods using pump displacement and float flow measurement, this application provides a measurement device, such as... Figure 4-5 As shown, it can be quickly embedded in the drainage ditch 1a and guide the water flowing in the drainage ditch 1a through the measuring device. The measuring device includes a water level scale 2 and a flow velocity measuring component (preferably an LS300-B portable flow meter) that contacts the water. When measuring the water flow, the measuring device is placed in the drainage ditch 1a, allowing the water to flow completely through it. After the flow velocity stabilizes, the water level height L is read through the water level scale 2, and the water velocity v is read through the flow velocity measuring device. The water flow volume Q is then calculated. The formula for calculating the water flow volume is as follows:

[0023] Q = L 2 / 2×v

[0024] Q - Water inflow rate, m 3 / s,

[0025] L - Water level height, in meters (m)

[0026] V - Flow velocity, m / s.

[0027] Specifically, such as Figure 2-3As shown, the measuring device is a measuring groove 3 with a V-shaped right-angle structure (made of 5mm steel plate, cut into rectangular plates 1000mm long and 200mm wide, with two plates welded together at a 90° perpendicular angle along their long sides; the width of the steel plate is increased when the water flow is large). Since drainage ditches 3 are usually excavated with non-standard structures, such as a large upper opening and a narrow lower bottom, the V-shaped measuring groove 3 can be adapted to drainage ditches 1a with different structures. After placing the measuring groove 3 in the drainage ditch 1a, the opening of the measuring groove 3 faces upwards, and the gap between the outer wall of the measuring groove 3 and the inner wall of the drainage ditch 1a can be sealed with sand or molded mud, allowing the water in the drainage ditch 1a to flow completely through the measuring groove 3.

[0028] To allow for a direct measurement of water level, such as Figure 2 As shown, the water level gauge 2 is installed on one side wall inside the measuring tank 3. The water level gauge 2 can be a measuring instrument with size markings, or it can be marked on the inside of the measuring tank 3 by means of engraving or other methods. The water level height in the measuring tank 3 can be intuitively determined according to the scale of the water level gauge 2.

[0029] To allow for a direct measurement of the water flow velocity, such as Figure 2-3 As shown, tie rods 4 are spaced apart on the top side of the measuring tank 3 to prevent deformation of the measuring tank 3. The flow velocity measuring component is mounted on the tie rod 4 in the middle and can contact the gushing water in the measuring tank 3. By contacting the gushing water with the flow velocity measuring component, the flow velocity of the gushing water can be measured, and combined with the water level height measurement data mentioned above, the flow volume can be quickly calculated.

[0030] To avoid excessive water inflow in drainage ditch 1a causing displacement of measuring tank 3, which would lead to inaccurate water flow velocity measurements by the flow velocity measuring component, such as... Figure 6 As shown, positioning screws 5 are provided on both outer walls of the measuring groove 3, which can abut against the inner wall of the drainage ditch 1a. Preferably, a threaded sleeve 51 is provided on the outer wall of the measuring groove 3, and the positioning screws 5 are connected to the threaded sleeve. After the measuring groove 3 is embedded into the drainage ditch 1a, the positioning screws 5 are rotated so that their ends are pressed against the side wall of the drainage ditch 1a, thereby achieving the overall positioning of the measuring groove 3 and overcoming the problems of displacement caused by excessive water flow and inaccurate measurement of water flow rate.

[0031] To quickly perform measurement operations after the measuring groove 3 is embedded in the drainage ditch 1a, such as... Figure 8-10As shown, support rods 6 are hinged to the top of the outer side of the measuring groove 3, and a retractable baffle plate 7 (preferably a rubber corrugated plate) is connected between the support rods 6 and the side wall of the measuring groove 3. Preferably, a lockable hinge screw (not shown in the figure) is used at the hinge point between the support rods 6 and the measuring groove 3. After the measuring groove 3 is embedded into the drainage ditch 1a, the baffle plate 7 is unfolded by rotating the support rods 6, so that the support rods 6 are in contact with the side wall of the drainage ditch 1a. Then, the support rods 6 are locked by the hinge screw. The baffle plate 7 can quickly block the gap between the measuring groove 3 and the drainage ditch 1a over a large area. Sand or shaped mud can be used to seal the gap between the baffle plate 7 and the drainage ditch 1a, which can quickly achieve the sealing effect. At the same time, the baffle plate 7 can also effectively prevent the sand or mud sealing the gap between the measuring groove 3 and the drainage ditch 1a from being washed away by the water flow due to excessive water flow.

[0032] The principle of this application is as follows: When measuring the water inflow, the measuring groove 3 is embedded entirely into the drainage ditch 1a. Then, the baffle plate 7 is unfolded, so that the support rod 6 is in contact with the side wall of the drainage ditch 1a. The support rod 6 is then locked in place by a hinged screw. The gap between the baffle plate 7 and the drainage ditch 1a is then sealed with sand or mortar. Finally, the positioning screw 5 is rotated so that its end is pressed against the side wall of the drainage ditch 1a, thus achieving the overall positioning of the measuring groove 3. After assembly, the water in the drainage ditch 1a flows through the measuring groove 3. The water level is read using the water level gauge 2, and the water flow velocity is read using the flow velocity measuring device. The water inflow data is then calculated. To obtain the water inflow data at other locations, the measuring groove 3 can be disassembled and reassembled.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this application. Various changes and modifications may be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims.

Claims

1. A reusable underground roadway water inflow measurement device, wherein a drainage ditch (1a) is excavated on one side of the underground roadway (1), characterized in that: The measuring device can be embedded in the drainage ditch (1a) and guide the gushing water in the drainage ditch (1a) to flow through the inside of the measuring device. The measuring device includes a water level gauge (2) and a flow velocity measuring component that is in contact with the gushing water.

2. The measuring device according to claim 1, characterized in that: The measuring device is a measuring tank (3) with a V-shaped right angle structure. The water level gauge (2) is set on one side wall inside the measuring tank (3). Tie rods (4) are set at intervals on the top side of the measuring tank (3). The flow velocity measuring component is set on the tie rod (4) located in the middle and can contact the gushing water in the measuring tank (3).

3. The measuring device according to claim 2, characterized in that: Positioning screws (5) that can abut against the inner wall of the drainage ditch (1a) are provided on both sides of the outer wall of the measuring groove (3).

4. The measuring device according to claim 3, characterized in that: Support rods (6) are hinged to the top of the outer side of the measuring groove (3), and extendable and retractable baffles (7) are connected between the support rods (6) and the side wall of the measuring groove (3).

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