Drainage drilling monitoring device

Abstract

The drainage drill hole monitoring device comprises a monitoring part, the monitoring part is provided with a monitoring hole, the monitoring hole extends in the vertical direction, the monitoring part is used for being arranged in a drainage drill hole, a plurality of water inlet seams are formed in the peripheral side of the monitoring part, the drainage drill hole is communicated with the monitoring hole through the water inlet seams, and the monitoring part is used for monitoring the drainage drill hole. Drained water flowing into the drainage drill hole in the aquifer can be introduced into the monitoring hole through the water inlet seam; the monitor is arranged in the monitoring hole, and the monitor is used for measuring at least one of the temperature, the water level and the flow velocity of the discharged water in the monitoring hole. Therefore, the drainage drilling monitoring device has the advantage of being convenient to monitor the drainage drilling.

Description

Technical Field

[0001] The utility model relates to the technical field of mine water hazard prevention and control, in particular to a drainage drilling monitoring device. Background Art

[0002] As a new type of roof water hazard, abscission water inrush occurs frequently. Based on the process and conditions of abscission water generation, the key to preventing and controlling abscission water is to destroy the conditions for the formation of abscission water: the source of replenishment water, the water-filled channels around the abscission layer, the relative closure of the abscission layer, and the stable development time and space of the abscission layer. The prevention and control of abscission water hazards mainly adopt two methods: destroying the development of abscission water and draining abscission water. Draining abscission water generally refers to draining the replenishment water source of the abscission layer rather than the direct drainage of the abscission water. It is usually effective to drain the aquifer using intercepting holes, straight-through drainage holes, and surface pumping and drainage holes. Straight-through drainage holes are constructed by predicting the location of the abscission layer and drilling holes directly from the ground to the coal seam floor before entering the mining influence range. Once the abscission layer is generated, the closure is destroyed and water cannot be stored. For the multi-abscission layer phenomenon that may occur in the Jurassic coalfield of the Ordos Basin, this method can effectively pre-drain all the formed abscission layer replenishment water sources. In related technologies, drainage drilling is typically carried out before the working face is mined. However, mining activity at the working face causes deformation and damage to the ground, squeezing the drainage borehole and making it impossible to observe drainage conditions. Drainage drilling involves placing a steel pipe at the bottom of the hole, draining aquifer water through the pores of the pipe to the working face. However, mining activity causes deformation and damage to the ground, squeezing the borehole and deforming the steel pipe, rendering it ineffective for drainage. Furthermore, monitoring the drainage hole requires manual measurement of the water level using a measuring rope at the hole mouth, making real-time monitoring impossible. This wastes manpower and resources and increases observation costs. Utility Model Content

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides a drainage borehole monitoring device.

[0004] The drainage drilling monitoring device of the embodiment of the utility model comprises:

[0005] A monitoring portion having a monitoring hole extending in an up-down direction, the monitoring portion being configured to be disposed in a drainage borehole, a plurality of water inlet slits being disposed on a circumferential side of the monitoring portion, the drainage borehole being connected to the monitoring hole via the plurality of water inlet slits, and drainage water flowing from the aquifer into the drainage borehole being able to flow into the monitoring hole via the water inlet slits;

[0006] A monitor is provided in the monitoring hole and is used to measure at least one of the temperature, water level and flow rate of the drained water in the monitoring hole.

[0007] In some embodiments, there are multiple monitoring parts, the multiple monitoring parts are connected in sequence in the up and down directions, and the multiple monitoring holes of the multiple monitoring parts are connected in sequence in the up and down directions.

[0008] In some embodiments, there are multiple monitors, and the multiple monitors are spaced apart in the vertical direction.

[0009] In some embodiments, the monitoring part includes a central tube, the inner wall surface of the central tube defines the monitoring hole, a plurality of water inlet slits are provided on the circumferential side of the central tube, and end threads are provided at the upper and lower ends of the central tube. The lower end of the central tube of the upper one of the two adjacent monitoring parts in the upper and lower directions is threadedly connected to the upper end of the central tube of the lower one.

[0010] The drainage drilling monitoring device of the embodiment of the present invention includes a connecting screw, the lower end of which is provided with an end thread, and the lower end of the connecting screw can be threadedly connected to the upper end of the central pipe of the uppermost one of the multiple monitoring parts.

[0011] In some embodiments, each of the monitoring parts includes a filter element, which is sleeved on the outer peripheral side of the central tube and is used to filter impurities in the drainage water flowing into the monitoring hole.

[0012] In some embodiments, the filter element includes an outer tube body, a top plate, a bottom plate and filter particles. A plurality of water inlet slits are provided on the circumferential side of the outer tube body. The outer edges of the top plate and the bottom plate are connected to the outer tube body, and the inner edges of the top plate and the bottom plate are connected to the center tube. A filter cavity is formed between the top plate and the bottom plate and the outer tube body and the center tube. The filter particles are filled in the filter cavity, and the width of the water inlet slit is smaller than the particle size of the filter particles.

[0013] In some embodiments, the monitoring portion is disposed within the monitoring section of the drainage borehole, and a distance between an outer wall of the monitoring portion and an inner wall of the monitoring section of the drainage borehole is greater than or equal to 10 mm and less than or equal to 50 mm;

[0014] The size of the plurality of monitoring parts in the vertical direction is greater than or equal to the size of the aquifer in the vertical direction;

[0015] The lower end portion of the central pipe of one of the plurality of monitoring parts located at the bottom extends into the drainage section of the drainage borehole, and the diameter of the drainage section is smaller than the diameter of the monitoring section.

[0016] In some embodiments, the monitor includes a temperature sensor, a water level sensor, and a flow rate sensor.

[0017] The drainage borehole monitoring device of an embodiment of the present utility model includes a monitoring and recording device, which is located outside the drainage borehole, and is electrically connected to the temperature sensor, the water level sensor and the flow rate sensor. The monitoring and recording device is used to record the data transmitted by the temperature sensor, the water level sensor and the flow rate sensor.

[0018] The beneficial effects of the present invention are as follows: the drainage borehole monitoring device according to the embodiment of the present invention provides a monitoring unit within the drainage borehole so that the drainage water in the drainage borehole can flow into the monitoring hole through the water inlet slit. Furthermore, a monitor is provided within the monitoring hole for measuring at least one of the temperature, water level, and flow rate of the drainage water in the monitoring hole. Thus, the drainage status within the drainage borehole can be determined based on at least one of the temperature data, water level data, and flow rate data of the drainage water transmitted by the monitor, and the drainage borehole can be monitored in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of a drainage borehole monitoring device according to an embodiment of the present utility model.

[0020] Figure 2 Schematic diagram of a connecting screw according to an embodiment of the present invention.

[0021] Figure numerals: 1. Drain hole; 2. Connecting screw; 3. Outer tube body; 4. Center tube; 5. Top plate; 6. Bottom plate; 7. Water inlet seam; 8. Filter particles; 9. Temperature sensor; 10. Water level sensor; 11. Flow rate sensor; 12. Monitoring and recording equipment. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0023] The following describes the drainage borehole monitoring device of the utility model embodiment with reference to the accompanying drawings. Figure 1 and Figure 2 As shown, the drainage borehole monitoring device according to an embodiment of the present utility model includes a monitoring part and a monitor.

[0024] The monitoring unit has a monitoring hole that extends in an up-down direction. The monitoring unit is configured to be located within the drainage borehole 1. Multiple water inlet slits 7 are provided around the monitoring unit. The drainage borehole 1 is connected to the monitoring hole via the multiple water inlet slits 7. Drainage water flowing from the aquifer into the drainage borehole 1 can pass into the monitoring hole through the water inlet slits 7. A monitor is located within the monitoring hole and is configured to measure at least one of the temperature, water level, and flow rate of the drainage water within the monitoring hole. Specifically, the monitoring section of the drainage borehole 1 extends through the aquifer, and the monitoring unit is located within the monitoring section of the drainage borehole 1. Drainage water from the aquifer can flow into the monitoring section of the drainage borehole 1 and then pass into the monitoring hole.

[0025] The drainage borehole monitoring device according to an embodiment of the present invention is configured with a monitoring unit within the drainage borehole 1 so that drainage water (from the aquifer) can flow into the monitoring borehole through the water inlet slit 7. Furthermore, a monitor is provided within the monitoring borehole for measuring at least one of the temperature, water level, and flow rate of the drainage water within the monitoring borehole. Thus, the drainage status within the drainage borehole 1 can be determined based on at least one of the temperature, water level, and flow rate data transmitted by the monitor, and the drainage borehole 1 can be monitored in real time.

[0026] Therefore, the drainage borehole monitoring device according to the embodiment of the present utility model has the advantage of being convenient for monitoring the drainage borehole 1 .

[0027] In some embodiments, there are multiple monitoring units, and the multiple monitoring units are sequentially connected in the vertical direction, and the multiple monitoring holes of the multiple monitoring units are sequentially connected in the vertical direction. Therefore, when the drainage borehole 1 is large in the vertical direction, the multiple monitoring units can be connected in series in the vertical direction to increase the size of the multiple monitoring holes in the vertical direction, thereby increasing the size of the drainage borehole 1 monitored in the vertical direction.

[0028] In some embodiments, the monitoring unit is arranged in the monitoring section of the drainage borehole 1, and the distance between the outer wall surface of the monitoring unit and the inner wall surface of the monitoring section of the drainage borehole 1 is greater than or equal to 10 mm and less than or equal to 50 mm. The lower end portion of the central tube 4 of one of the multiple monitoring units located at the bottom extends into the drainage section of the drainage borehole 1, and the diameter of the drainage section is smaller than the diameter of the monitoring section. Specifically, the monitoring section is located above the drainage section, and the outer diameter of the central tube 4 is adapted to the diameter of the drainage section. For example, the distance between the outer wall surface of the monitoring unit and the inner wall surface of the monitoring section of the drainage borehole 1 is 20 mm, 30 mm or 40 mm.

[0029] In some embodiments, the vertical dimensions of the multiple monitoring sections are greater than or equal to the vertical dimensions of the aquifer. This allows the monitoring sections to monitor water leakage from the aquifer in the drainage borehole 1. Specifically, the vertical dimensions of the monitoring sections are greater than or equal to the vertical dimensions of the aquifer. The monitoring sections may extend through multiple aquifers.

[0030] In some embodiments, there are multiple monitors, which are spaced apart in the vertical direction. For example, when there are multiple aquifers, multiple monitors can be set to monitor the drainage conditions of the drainage boreholes 1 in multiple aquifers.

[0031] like Figure 1 As shown, in some embodiments, the monitor includes a temperature sensor 9, a water level sensor 10 and a flow rate sensor 11. Specifically, the temperature sensor 9, the water level sensor 10 and the flow rate sensor 11 are all located in the middle or lower part of the corresponding aquifer in the monitoring hole. The temperature sensor 9 is used to measure the temperature of the water discharged in the monitoring hole. The water level sensor 10 is used to measure the water level height of the monitoring hole (corresponding aquifer). The flow rate sensor 11 is used to measure the flow rate of the water discharged in the monitoring hole. In other words, the temperature sensor 9, the water level sensor 10 and the flow rate sensor 11 are provided in the monitoring hole, so that the temperature, water level and flow rate of the water discharged in the monitoring hole can be monitored, that is, the temperature, water level and flow rate of the water discharged from the drainage borehole 1 can be monitored.

[0032] like Figure 1 As shown, in some embodiments, the drainage borehole monitoring device according to the embodiment of the present invention includes a monitoring and recording device 12. The monitoring and recording device 12 is located outside the drainage borehole 1, and the monitoring and recording device 12 is electrically connected to the temperature sensor 9, the water level sensor 10 and the flow rate sensor 11. The monitoring and recording device 12 is used to record the data transmitted by the temperature sensor 9, the water level sensor 10 and the flow rate sensor 11. The monitoring and recording device 12 is electrically connected to the temperature sensor 9, the water level sensor 10 and the flow rate sensor 11 (via a cable), forming a complete monitoring system. For example, the monitoring and recording device 12 is a central processing unit responsible for receiving data from various sensors (temperature sensor 9, water level sensor 10 and flow rate sensor 11), performing data analysis and storage, and possibly sending the data to a remote monitoring center or user terminal via a display screen, a network or wireless communication. The monitoring and recording device 12 may also have an alarm function. When the monitored parameters exceed a preset safety range, the device will automatically trigger an alarm to notify relevant personnel to take measures to prevent accidents.

[0033] like Figure 1 As shown, in some embodiments, the monitoring unit includes a central tube 4, the inner wall of which defines a monitoring hole. A plurality of water inlet slits 7 are provided around the circumference of the central tube 4. The central tube 4 has threaded ends at both the upper and lower ends. The lower end of the central tube 4 of two vertically adjacent monitoring units, located on the upper side, is threadedly connected to the upper end of the central tube 4 of the lower side. Thus, two vertically adjacent monitoring units can be threadedly connected via the central tube 4, allowing multiple monitoring units to be connected in series.

[0034] like Figure 2 As shown, the drainage borehole monitoring device according to an embodiment of the present invention includes a connecting screw 2, the lower end of the connecting screw 2 is provided with an end thread, and the lower end of the connecting screw 2 can be threadedly connected to the upper end of the central tube 4 of the top one of the multiple monitoring parts. Specifically, the upper end of the connecting screw 2 is provided with an end thread, the upper end of the connecting screw 2 can be threadedly connected to the delivery device, and the lower end of the connecting screw 2 can be threadedly connected to the upper end of the central tube 4 of the top one of the multiple monitoring parts. The delivery device can deliver the multiple monitoring parts into the drainage borehole 1 through the connecting screw 2. After delivery is completed, the connecting screw 2 can be disassembled from the upper end of the central tube 4 of the top one of the multiple monitoring parts. When monitoring is no longer needed, the connecting screw 2 can be connected to the upper end of the central tube 4 of the top one of the multiple monitoring parts again to recover the multiple monitoring parts. The connecting screw 2 can facilitate the multiple monitoring parts to accurately reach the target layer.

[0035] In some embodiments, each monitoring unit includes a filter element, which is mounted on the outer periphery of the central tube 4 and is used to filter impurities in the drainage water entering the monitoring hole. In this way, the drainage water in the drainage borehole 1 can first pass through the filter element before entering the monitoring hole in the central tube 4.

[0036] like Figure 1 As shown, in some embodiments, the filter element includes an outer tube body 3 , a top plate 5 , a bottom plate 6 and filter particles 8 .

[0037] The outer tube body 3 is provided with multiple water inlet slits 7. The outer edges of the top plate 5 and bottom plate 6 are connected to the outer tube body 3, while their inner edges are connected to the central tube 4. A filter cavity is formed between the top plate 5 and bottom plate 6, the outer tube body 3, and the central tube 4. Filter particles 8 are filled within the filter cavity. The width of the water inlet slits 7 is smaller than the particle size of the filter particles 8. Drainage from the drainage borehole 1 passes through the water inlet slits 7 on the outer tube body 3, the filter particles 8, and the water inlet slits 7 on the central tube 4 before entering the monitoring hole. The filter particles 8 filled in the filter cavity filter the drainage water and protect the central tube 4, minimizing the impact of mining on the central tube 4 and reducing deformation and damage to the central tube 4, thereby extending the effective utilization period of the drainage borehole 1. For example, the outer edges of the top plate 5 and bottom plate 6 are welded to the outer tube body 3, while the inner edges of the top plate 5 and bottom plate 6 are welded to the central tube 4. The filter particles 8 are gravel. The distance between the outer wall of the outer tube body 3 and the inner wall of the monitoring section of the drainage borehole 1 is greater than or equal to 10 mm and less than or equal to 50 mm. The outer tube body 3 and the central tube 4 are both circular tubes.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0042] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0043] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in this field are all within the scope of protection of the present invention.

Claims

1. A drainage borehole monitoring device, characterized in that: include: A monitoring portion having a monitoring hole extending in an up-down direction, the monitoring portion being configured to be disposed in a drainage borehole, a plurality of water inlet slits being disposed on a circumferential side of the monitoring portion, the drainage borehole being connected to the monitoring hole via the plurality of water inlet slits, and drainage water flowing from the aquifer into the drainage borehole being able to flow into the monitoring hole via the water inlet slits; A monitor is provided in the monitoring hole and is used to measure at least one of the temperature, water level and flow rate of the drained water in the monitoring hole.

2. The drainage borehole monitoring device according to claim 1, characterized in that: There are a plurality of monitoring parts, and the plurality of monitoring parts are sequentially connected in the up-down direction, and the plurality of monitoring holes of the plurality of monitoring parts are sequentially connected in the up-down direction.

3. The drainage borehole monitoring device according to claim 2, characterized in that: There are a plurality of monitors, and the plurality of monitors are spaced apart in the vertical direction.

4. The drainage borehole monitoring device according to claim 2, characterized in that: The monitoring part includes a central tube, the inner wall surface of the central tube defines the monitoring hole, a plurality of water inlet slits are provided on the circumference of the central tube, and end threads are provided at both the upper and lower ends of the central tube. The lower end of the central tube of the upper one of the two adjacent monitoring parts in the upper and lower directions is threadedly connected to the upper end of the central tube of the lower one.

5. The drainage borehole monitoring device according to claim 4, characterized in that: It comprises a connecting screw rod, the lower end of which is provided with an end thread, and the lower end of which can be threadedly connected to the upper end of the central tube of the uppermost one of the plurality of monitoring parts.

6. The drainage borehole monitoring device according to claim 4, characterized in that: Each monitoring part includes a filter element, which is sleeved on the outer peripheral side of the central tube and is used to filter impurities in the drain water flowing into the monitoring hole.

7. The drainage borehole monitoring device according to claim 6, characterized in that: The filter element includes an outer tube body, a top plate, a bottom plate and filter particles. A plurality of water inlet slits are provided on the circumference of the outer tube body. The outer edges of the top plate and the bottom plate are connected to the outer tube body, and the inner edges of the top plate and the bottom plate are connected to the central tube. A filter cavity is formed between the top plate and the bottom plate and the outer tube body and the central tube. The filter particles are filled in the filter cavity, and the width of the water inlet slit is smaller than the particle size of the filter particles.

8. The drainage borehole monitoring device according to claim 4, characterized in that: The monitoring portion is arranged in the monitoring section of the drainage borehole, and the distance between the outer wall surface of the monitoring portion and the inner wall surface of the monitoring section of the drainage borehole is greater than or equal to 10 mm and less than or equal to 50 mm; The size of the plurality of monitoring parts in the vertical direction is greater than or equal to the size of the aquifer in the vertical direction; The lower end portion of the central pipe of one of the plurality of monitoring parts located at the bottom extends into the drainage section of the drainage borehole, and the diameter of the drainage section is smaller than the diameter of the monitoring section.

9. The drainage borehole monitoring device according to any one of claims 1 to 8, characterized in that: The monitor includes a temperature sensor, a water level sensor and a flow rate sensor.

10. The drainage borehole monitoring device according to claim 9, characterized in that: It includes a monitoring and recording device, which is located outside the drainage borehole, and is electrically connected to the temperature sensor, the water level sensor and the flow rate sensor. The monitoring and recording device is used to record the data transmitted by the temperature sensor, the water level sensor and the flow rate sensor.

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