Equipment for monitoring stability of metal mine filling body through optical fiber

Abstract

The utility model discloses equipment for monitoring the stability of a metal mine filling body through optical fibers, which belongs to the technical field of filling body monitoring equipment for filling and mining of metal mines and comprises an equipment main body and a distributed optical fiber sensing system connected with the equipment main body through optical fibers. A control center and a temperature sensor are arranged on the two sides of the interior of the equipment body respectively, a seepage sensor is arranged below the temperature sensor, and sealing holes are formed in the center positions of the top and the bottom of the equipment body. By adopting the structure, the equipment for monitoring the stability of the metal mine filling body through the optical fibers can monitor the state of the filling body in real time, transmit monitoring data to a data center in real time and then send the monitoring data to the ground, and has extremely important significance on scientific research of the filling body in a field environment.

Description

Technical Field

[0001] The utility model relates to the technical field of filling body monitoring equipment for filling mining of metal mines, in particular to a device for monitoring the stability of filling bodies of metal mines by using optical fibers. Background Art

[0002] China is rich in mineral resources, but with the continuous exploitation of mineral resources, related environmental problems such as ground subsidence and environmental damage are becoming increasingly serious. Therefore, the use of backfilling for metal mining shows its significant advantages. Despite this, there is relatively little research on the mechanical properties, stability and other key properties of backfilling materials.

[0003] At present, most of the research on metal mine fillings is limited to indoor experiments, mainly uniaxial and triaxial compression tests, which are designed to evaluate the fluidity and shear strength of the filling. Some researchers also use consolidation instruments and expansion rate measurement equipment to explore the expansion characteristics of the filling during the consolidation stage, and evaluate its long-term stability and support role in the mine cavity. However, these studies are usually completed in an indoor environment, which is significantly different from the actual underground environment of the filling, so it is difficult to accurately simulate the actual stress conditions of the filling on site.

[0004] This application innovatively designs for the field environment and installs the monitoring equipment inside the filling body. It integrates the optical fiber monitoring module, temperature sensor, and seepage sensor, which can transmit the monitoring data to the data center in real time and then send it to the ground. This technology can monitor the state of the filling body in real time, which is of great significance for the scientific research of the filling body in the field environment. Utility Model Content

[0005] The utility model aims to provide a device for monitoring the stability of metal mine filling bodies by optical fiber, to monitor the field environment of the filling bodies, and to transmit the data to a data center in real time.

[0006] To achieve the above-mentioned purpose, the utility model provides a device for optical fiber monitoring the stability of metal mine filling bodies, including a device body and a distributed optical fiber sensing system (OFDR) connected to the device body through optical fiber, an optical frequency receiver is arranged inside the device body, a control center and a temperature sensor are respectively arranged on both sides of the interior of the device body, and a seepage sensor is arranged below the temperature sensor, and sealing holes are opened at the top and bottom center positions of the device body.

[0007] Preferably, the control center is connected to an underground data center, and the underground data center is connected to an above-ground data center.

[0008] Preferably, two optical fibers are provided, one end of each of the two optical fibers is connected to the distributed optical fiber sensing system, and the other end passes through the sealing hole at the top of the device body and the sealing hole at the bottom of the device body respectively to be connected to the optical frequency receiver.

[0009] Preferably, the temperature sensor and the control center, the seepage sensor and the control center, the optical frequency receiver and the control center, the control center and the downhole data center, and the downhole data center and the surface data center are all connected via data lines.

[0010] Preferably, a water-soluble adhesive is provided on the optical fiber.

[0011] Therefore, the utility model adopts an optical fiber monitoring device of the above structure for metal mine filling body stability, realizes real-time monitoring of the interior of the metal mine filling body, and transmits data to the ground, completing accurate detection and real-time monitoring of the filling body.

[0012] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of an embodiment of a device for monitoring the stability of a metal mine filling body using optical fiber according to the utility model;

[0014] Reference numerals:

[0015] 1. Distributed fiber optic sensing system; 2. Optical frequency receiver; 3. Control center; 4. Temperature sensor; 5. Seepage sensor; 6. Optical fiber; 7. Sealing hole; 8. Downhole data center; 9. Surface data center; 10. Data cable; 11. Water-soluble adhesive. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0017] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] Example

[0019] The technical solutions in the embodiments of the present utility model will be described clearly and completely below in conjunction with the accompanying drawings.

[0020] like Figure 1 As shown, an optical fiber monitoring device for the stability of metal mine filling bodies, the device as a whole is a cubic structure filled with foam material inside, which is used to achieve temperature insulation and stability, including a device body and a distributed optical fiber sensing system 1 connected to the device body through an optical fiber 6, the distributed optical fiber sensing system 1 emits light of different wavelengths, an optical frequency receiver 2 is arranged inside the device body to collect the light emitted by the distributed optical fiber sensing system 1, a control center 3 and a temperature sensor 4 are respectively arranged on both sides of the inside of the device body, the temperature sensor 4 can monitor the temperature change inside the filling body, and is connected to the control center 3 through a data line 10, which is very critical for evaluating the curing process and chemical reaction dynamics, and a seepage sensor 5 is arranged below the temperature sensor 4 for detecting the fluid movement inside the filling body, and is connected to the control center 3 through a data line 10, which is very critical for evaluating the water tightness and structural integrity of the filling body, and sealing holes 7 are opened at the top and bottom center positions of the device body.

[0021] Two optical fibers 6 are provided, one end of each of the two optical fibers 6 is connected to the distributed optical fiber sensing system 1, and the other ends are connected to the optical frequency receiver 2 through the sealing hole 7 at the top of the device body and the sealing hole 7 at the bottom of the device body, respectively. The sealing hole 7 is waterproof and anti-electric, and can isolate the connection between the outside and the inside of the device body. A water-soluble adhesive 11 is provided on the optical fiber 6. In order to make the monitoring data of the optical fiber 6 more reliable, the water-soluble adhesive 11 is used to fix the optical fiber 6 to the top plate and the bottom plate of the filling space before the entire device is filled with foam material, thereby increasing the contact range between the optical fiber 6 and the inside of the entire device.

[0022] The control center 3 is connected to the downhole data center 8, and the downhole data center 8 is connected to the surface data center 9. The optical frequency receiver 2 and the control center 3, the control center 3 and the downhole data center 8, and the downhole data center 8 and the surface data center 9 are also connected through the data line 10. The optical frequency receiver 2 sends the collected optical fiber strain data to the control center 3 through the data line 10, and the data collected by the temperature sensor 4 and the seepage sensor 5 are centrally transmitted to the control center 3, and then the control center 3 transmits the data to the downhole data center 8 and the surface data center 9 in turn for aggregation and processing, simulating the crack data in the filling body, and completing the accurate detection and real-time monitoring of the filling body.

[0023] Therefore, the utility model adopts an optical fiber monitoring device of the above structure for the stability of metal mine filling bodies, which can monitor the status of the filling body in real time, and transmit the monitoring data to the data center in real time, and then send it to the ground, which is of great significance for the scientific research of the filling body in the field environment.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. An optical fiber monitoring device for the stability of metal mine fillings, characterized in that: The invention comprises a device body and a distributed optical fiber sensing system connected to the device body through an optical fiber, wherein an optical frequency receiver is arranged inside the device body, a control center and a temperature sensor are arranged on both sides inside the device body, and a seepage sensor is arranged below the temperature sensor, and sealing holes are opened at the top and bottom center positions of the device body.

2. The optical fiber monitoring device for metal mine filling stability according to claim 1 is characterized by: The control center is connected to an underground data center, and the underground data center is connected to an above-ground data center.

3. The optical fiber monitoring device for metal mine filling stability according to claim 1 is characterized by: Two optical fibers are provided, one end of each of the two optical fibers is connected to the distributed optical fiber sensing system, and the other end passes through the sealing hole at the top of the device body and the sealing hole at the bottom of the device body respectively to be connected to the optical frequency receiver.

4. The optical fiber monitoring device for metal mine filling stability according to claim 2 is characterized by: The temperature sensor and the control center, the seepage sensor and the control center, the optical frequency receiver and the control center, the control center and the downhole data center, and the downhole data center and the surface data center are all connected via data lines.

5. The optical fiber monitoring device for metal mine filling stability according to claim 1 is characterized by: A water-soluble adhesive is arranged on the optical fiber.

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