Water level and water quality monitoring device for underground reservoir

Abstract

The utility model discloses an underground reservoir water level and water quality monitoring device which comprises a mining area, the interior of the mining area is divided into a goaf, coal pillars and artificial dam bodies, the coal pillars and the artificial dam bodies are distributed in a staggered mode, a monitoring mechanism is arranged in the area of the goaf through a pre-arrangement method, and the monitoring mechanism comprises a protection assembly and a control assembly. The optical fiber stress sensor and the optical fiber point type sensor are both installed inside the protection assembly, the protection assembly plays a protection role, the protection assembly comprises an outer sleeve steel pipe, and a plurality of through holes are evenly formed in the outer surface of the outer sleeve steel pipe. According to the water level and water quality monitoring device for the underground reservoir, the optical fiber stress sensor and the point type sensor are installed in the protection assembly, then the optical fiber stress sensor and the point type sensor are protected, the problem that the optical fiber stress sensor and the point type sensor are smashed is avoided, meanwhile, the overall stability of the outer sleeve steel pipe is improved through the supporting assembly, and the using reliability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of underground reservoir water level monitoring, in particular to an underground reservoir water level and water quality monitoring device. Background Art

[0002] Coal mine underground reservoir projects are an effective way to protect and utilize water resources in coal mining mines. Dynamic monitoring and effective control of coal pillar dams under long-term water immersion and superposition of dynamic and static loads have become the key to the long-term safe operation of coal mine underground reservoirs. Among them, the dynamic water pressure seepage characteristics have a great impact on the coal pillar dam body that has natural defects (pores, cracks, etc.) and accounts for a large proportion of the reservoir dam body. Therefore, continuous seepage pressure monitoring of the water storage coal pillar dam body is an important part of the entire underground reservoir project.

[0003] Reference patent publication number "CN112903558A" discloses a plurality of seepage pressure monitoring pipes, all of which are horizontally placed in the coal pillar dam body and evenly arranged in the water flooding affected area; the seepage pressure monitoring pipe is composed of a monitoring section and a cable section; a plurality of seepage pressure monitoring positions are arranged in the monitoring section along the length direction of the seepage pressure monitoring pipe, and the length of the monitoring section is greater than the length of the water flooding affected area at its location.

[0004] This patent increases the service life of the monitoring device. After coal mining, an underground reservoir may be formed inside the mining area. The existing underground reservoir water level and water quality monitoring device will be pre-buried in the goaf during installation. However, during the mining process, there may be falling gangue. If the falling gangue hits the monitoring device, it may cause damage to the monitoring device. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a device for monitoring the water level and water quality of an underground reservoir, which solves the problem that the existing device for monitoring the water level and water quality of an underground reservoir is damaged by being smashed during the mining process.

[0006] To achieve the above purpose, the utility model is implemented by the following technical solutions: an underground reservoir water level and water quality monitoring device includes a mining area, and the interior of the mining area is divided into a goaf area, a coal pillar and an artificial dam body, the coal pillar and the artificial dam body are staggered, and a monitoring mechanism is set in the goaf area by a pre-deployment method, and the monitoring mechanism includes: an optical fiber stress sensor and a plurality of optical fiber point sensors;

[0007] The protective component, the optical fiber stress sensor and the optical fiber point sensor are both installed inside the protective component, and the protective component plays a protective role. The protective component includes an outer jacket steel pipe, and the outer surface of the outer jacket steel pipe is evenly provided with a plurality of through holes, and the front and rear ends of the outer jacket steel pipe are fixedly connected with two left and right connection blocks for splicing;

[0008] A supporting assembly is provided in multiple groups inside the protection assembly, and the supporting assembly is used to support and stabilize the overall structure of the protection assembly;

[0009] The mounting assembly is arranged on the supporting assembly and is used for mounting the optical fiber stress sensor.

[0010] Preferably, the support assembly comprises a circular ring tube, and four connecting ribs are fixedly connected to the surface of the circular ring tube at equal distances along the circumferential direction.

[0011] Preferably, the other sides of the four connecting ribs are fixedly connected with arc plates, and the diameter of the circular profile formed by the four arc plates is interference fit with the inner diameter of the protective component.

[0012] Preferably, the mounting assembly comprises two upper and lower sliding rods, and both of the two sliding rods penetrate the annular tube and extend to the interior of the annular tube.

[0013] Preferably, one end of the two sliding rods located inside the circular tube is fixedly connected to an arc-shaped pressure plate, and one end of the two sliding rods located outside the circular tube is fixedly connected to a circular baffle.

[0014] Preferably, a limit spring is sleeved on the surface of the slide rod between the circular baffle and the annular tube, one end of the limit spring is fixedly connected to the inner side of the circular baffle, and the other end of the limit spring is fixedly connected to the surface of the annular tube.

[0015] Beneficial Effects

[0016] The utility model provides a device for monitoring water level and water quality of underground reservoirs. Compared with the prior art, it has the following beneficial effects:

[0017] 1. The underground reservoir water level and water quality monitoring device has both the optical fiber stress sensor and the optical fiber point sensor installed inside the protective component, and the protective component plays a protective role. The protective component includes an outer steel pipe. The optical fiber stress sensor and the point sensor are installed inside the protective component to protect the two to avoid being damaged. At the same time, the overall stability of the outer steel pipe is increased through the support component, thereby improving the reliability of the device during use.

[0018] 2. The underground reservoir water level and water quality monitoring device includes two upper and lower sliding rods through the installation component. The two sliding rods both penetrate the circular tube and extend to the inside of the circular tube. One end of the two sliding rods located inside the circular tube is fixedly connected with an arc pressure plate. An installation component is arranged in the support component for clamping and installing the optical fiber stress sensor. The installation operation is convenient and quick, which improves the convenience of using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the appearance of the utility model;

[0020] Figure 2 It is a schematic diagram of the protection component of the utility model;

[0021] Figure 3 It is a partial view of the utility model;

[0022] Figure 4 It is a schematic diagram of the support assembly and the installation assembly of the utility model.

[0023] In the figure: 1. Mining area; 2. Goaf; 3. Coal pillar; 4. Protection component; 41. Outer steel pipe; 42. Through hole; 43. Connecting block; 5. Support component; 51. Circular ring pipe; 52. Connecting rib; 53. Arc plate; 6. Fiber optic stress sensor; 7. Fiber optic point sensor; 8. Installation component; 81. Sliding rod; 82. Arc pressure plate; 83. Circular baffle; 84. Limit spring; 9. Artificial dam body. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The underground reservoir water level and water quality monitoring device provides two technical solutions:

[0026] like Figure 1-4 The first embodiment is shown: comprising a mining area 1, wherein the interior of the mining area 1 is divided into a goaf area 2, coal pillars 3 and an artificial dam body 9, wherein the coal pillars 3 and the artificial dam body 9 are staggered, and a monitoring mechanism is pre-arranged in the goaf area 2, wherein the monitoring mechanism comprises: an optical fiber stress sensor 6 and a plurality of optical fiber point sensors 7;

[0027] The protective component 4, the optical fiber stress sensor 6 and the optical fiber point sensor 7 are all installed inside the protective component 4, and the protective component 4 plays a protective role. The protective component 4 includes an outer jacket steel pipe 41, and the outer surface of the outer jacket steel pipe 41 is evenly provided with a plurality of through holes 42. The front and rear ends of the outer jacket steel pipe 41 are fixedly connected with two left and right connection blocks 43 for splicing;

[0028] The support assembly 5 is arranged in multiple groups inside the protective assembly 4, and the support assembly 5 is used to support and stabilize the overall structure of the protective assembly 4. The support assembly 5 includes a circular tube 51, and the surface of the circular tube 51 is fixedly connected with four connecting ribs 52 at equal distances along the circumferential direction. The other sides of the four connecting ribs 52 are fixedly connected with arc plates 53, and the diameter of the circular contour formed by the four arc plates 53 is interference fit with the inner diameter of the protective assembly 4.

[0029] like Figure 3 and 4 A second embodiment is shown, which mainly differs from the first embodiment in that a mounting assembly 8 is arranged on the supporting assembly 5, and is used to mount the optical fiber stress sensor 6. The mounting assembly 8 includes two upper and lower slide bars 81, and the two slide bars 81 both penetrate the annular tube 51 and extend to the interior of the annular tube 51. One end of the two slide bars 81 located inside the annular tube 51 is fixedly connected with an arc pressure plate 82, and one end of the two slide bars 81 located outside the annular tube 51 is fixedly connected with a circular baffle 83. A limit spring 84 is sleeved on the surface of the slide bar 81 located between the circular baffle 83 and the annular tube 51, and one end of the limit spring 84 is fixedly connected to the inner side of the circular baffle 83, and the other end of the limit spring 84 is fixedly connected to the surface of the annular tube 51.

[0030] When in use, multiple support components 5 are inserted into the interior of the protective component 4 and kept at an equal distance. Then, the fiber optic point sensor 7 is inserted from the middle of the circular tube 51. When inserted, the fiber optic point sensor 7 contacts the upper and lower arc pressure plates 82 and pushes the two arc pressure plates 82 away from each other. At the same time, the two limit springs 84 are stretched, so that the two arc pressure plates 82 press the fiber optic point sensor 7 under the reaction force of the limit spring 84, thereby completing the installation. Since the fiber optic point sensor 7 is continuously arranged in the entire goaf 2 area, the water level and water pressure in the entire section direction can be monitored, and then the fiber optic point sensor 7 can be used to accurately measure the water level, water pressure and water quality information of the underground reservoir.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for monitoring water level and water quality of underground reservoirs, comprising a mining area (1), wherein the interior of the mining area (1) is divided into a goaf (2), a coal pillar (3) and an artificial dam body (9), wherein the coal pillar (3) and the artificial dam body (9) are arranged in an alternating manner, and characterized in that: A monitoring mechanism is provided in the goaf area (2) by a pre-deployment method, and the monitoring mechanism comprises: an optical fiber stress sensor (6) and a plurality of optical fiber point sensors (7); The protective component (4), the optical fiber stress sensor (6) and the optical fiber point sensor (7) are all installed inside the protective component (4), and the protective component (4) plays a protective role. The protective component (4) comprises an outer sleeve steel pipe (41), and the outer surface of the outer sleeve steel pipe (41) is evenly provided with a plurality of through holes (42). The front and rear ends of the outer sleeve steel pipe (41) are fixedly connected with two left and right connection blocks (43) for splicing. A plurality of support components (5) are arranged inside the protection component (4), and the support components (5) are used to support and stabilize the overall structure of the protection component (4); The mounting assembly (8) is arranged on the supporting assembly (5), and the mounting assembly (8) is used to mount the optical fiber stress sensor (6).

2. The underground reservoir water level and water quality monitoring device according to claim 1, characterized in that: The support assembly (5) comprises a circular ring tube (51), and four connecting ribs (52) are fixedly connected to the surface of the circular ring tube (51) at equal distances along the circumferential direction.

3. The underground reservoir water level and water quality monitoring device according to claim 2, characterized in that: The other sides of the four connecting ribs (52) are all fixedly connected with arc-shaped plates (53), and the diameter of the circular profile formed by the four arc-shaped plates (53) is interference-fitted with the inner diameter of the protective component (4).

4. The underground reservoir water level and water quality monitoring device according to claim 3, characterized in that: The mounting assembly (8) comprises two upper and lower sliding rods (81), and the two sliding rods (81) both penetrate the annular tube (51) and extend to the interior of the annular tube (51).

5. The underground reservoir water level and water quality monitoring device according to claim 4, characterized in that: One end of the two sliding rods (81) located inside the annular tube (51) is fixedly connected to an arc-shaped pressing plate (82), and one end of the two sliding rods (81) located outside the annular tube (51) is fixedly connected to a circular baffle (83).

6. The underground reservoir water level and water quality monitoring device according to claim 4, characterized in that: A limit spring (84) is sleeved on the surface of the slide bar (81) between the circular baffle (83) and the annular tube (51), one end of the limit spring (84) is fixedly connected to the inner side of the circular baffle (83), and the other end of the limit spring (84) is fixedly connected to the surface of the annular tube (51).

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