A delamination grouting device based on water conservation mining

Abstract

This invention relates to the field of grouting equipment for water-conserving mining, specifically a delamination grouting device based on water-conserving mining. The device integrates a mobile platform, grouting system, drilling system, adaptive tracer mixing device, real-time monitoring unit during drilling, and central control system. The core technology lies in achieving constant-proportion mixing and synchronous dispersion of tracer and grout through a mechanical adaptive device; utilizing the real-time monitoring unit to collect tracer concentration and hydrological data in situ and synchronously during water pressure testing; and the central control system using intelligent algorithms to analyze these data, automatically generating multi-dimensional diagnostic conclusions including "direct filling" and "stress closure," and continuously optimizing through self-checking and model learning functions. This invention overcomes the difficulty of real-time evaluation of traditional delamination grouting effects.

Description

Technical Field

[0001] This invention relates to the field of grouting equipment for water-conserving mining, specifically a delamination grouting equipment based on water-conserving mining. Background Technology

[0002] Water-retaining grouting is a key technology for achieving green mining, primarily applied in mining areas where coal seam mining severely impacts aquifers. Its core principle involves injecting a specific grout (such as clay or fly ash) under high pressure into the overburden fracture zone behind the coal face through boreholes. After solidifying in the fractures, the grout effectively reshapes the rock structure, forming an artificial "water-retaining critical layer," thereby significantly reducing the development height and connectivity of water-conducting fractures in the overburden and blocking groundwater seepage channels.

[0003] In existing technologies, the evaluation of the effectiveness of delamination grouting heavily relies on verification procedures following the grouting process. Typically, several separate verification boreholes are drilled several days or even longer after the grout has been presumed to have diffused, and the filling effect is indirectly inferred through limited core sampling and isolated pressure tests. This post-hoc evaluation model has significant drawbacks: First, the evaluation is severely delayed, failing to provide real-time feedback and guidance for ongoing grouting operations. Second, the evaluation conclusions are based on a very small number of discrete "point" data points, making inferences based on isolated data points, and cannot truly and continuously reflect the spatiotemporal distribution of the grout in a complex fracture network, whether as a surface or a volume. Third, changes in hydrological parameters (such as unit water absorption) obtained from verification boreholes are difficult to establish a unique and reliable causal relationship with specific previous grouting operations, because formation permeability can be affected by multiple factors. This discrete, delayed, and isolated evaluation method leads to inaccurate and incomplete assessments of the effectiveness.

[0004] Therefore, it is necessary to develop a delamination grouting device based on water-retaining mining to solve the above problems. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] A delamination grouting device based on water-retaining mining, comprising:

[0007] Mobile platform;

[0008] Grouting system and drilling system installed on the mobile platform;

[0009] An adaptive tracer mixing device is installed on the slurry output pipe of the grouting system for adding and synchronously mixing tracers at a rate proportional to the slurry flow rate.

[0010] The real-time monitoring unit while drilling is integrated on the drill pipe of the drilling system. It integrates a tracer sensor, a pressure sensor and a flow sensor to monitor the tracer concentration, pressure and flow data in the return fluid in real time during the water pressure test.

[0011] The central control system is communicatively connected to the grouting system, the adaptive tracer mixing device, and the real-time monitoring unit while drilling, respectively.

[0012] The central control system is configured as follows:

[0013] Acquire and store the baseline unit water absorption rate collected by the drilling system and the real-time monitoring unit before grouting;

[0014] After grouting, the mobile platform, drilling system, and real-time drilling detection unit are controlled to perform movement detection and data acquisition.

[0015] Based on the baseline unit water absorption, real-time detected tracer concentration, and water pressure test data, a correlation diagnostic conclusion on the grouting filling effect is automatically generated.

[0016] Preferably, the adaptive tracer mixing device includes:

[0017] A fan-shaped stirring impeller is rotatably disposed inside the slurry output pipe;

[0018] A speed reduction transmission mechanism, the input shaft of which is connected to the rotating shaft of the fan-shaped stirring impeller;

[0019] A metering pump mechanism, the drive shaft of which is connected to the output shaft of the reduction transmission mechanism;

[0020] The tracer storage tank is connected to the inlet of the metering pump mechanism via a liquid guide pipe;

[0021] The tracer injection tube is connected to the outlet of the metering pump mechanism, and its outlet is located within the blade action area of ​​the fan-shaped impeller.

[0022] The flowing slurry drives the fan-shaped stirring impeller to rotate, which in turn drives the metering pump mechanism through the reduction transmission mechanism to pump the tracer into the slurry and mix it synchronously.

[0023] Preferably, the metering pump mechanism includes a liquid storage tube, a push plate is slidably connected inside the liquid storage tube, and the drive shaft of the push plate is connected to the output shaft of the speed reduction transmission mechanism.

[0024] Preferably, the fan-shaped impeller shaft has a cavity, the tracer injection tube is connected to the cavity through a rotary joint, and the cavity has an inclined channel for tracer discharge.

[0025] Preferably, the channel and the axis of the fan-shaped stirring impeller shaft form an angle of 30-60 degrees.

[0026] Preferably, the central control system is configured to perform diagnostics in the following manner:

[0027] Real-time plotting and analysis of tracer concentration-time and unit water absorption-time curves;

[0028] When a characteristic peak is detected in the tracer concentration-time curve, and the value of the unit water absorption-time curve decreases significantly compared to the baseline value before grouting, the first type of conclusion, "direct filling of grout is effective," is generated.

[0029] Preferably, the central control system is further configured to generate a spatialized grouting effect evaluation map based on the benchmark unit water absorption and real-time detection data.

[0030] Preferably, the central control system is further configured to:

[0031] When the situation occurs where "the tracer test result is negative and the unit water absorption decreases significantly", a second type of conclusion is generated: "the stress field change leads to crack closure".

[0032] Preferably, the system is further provided with a bypass sampling valve for directly diverting slurry samples from the slurry output pipe to the verification tracer sensor for self-testing; before generating the second type of conclusion, the central control system prioritizes controlling the bypass sampling valve to perform self-testing to confirm that the tracer dosing and detection functions are normal.

[0033] Preferably, the central control system further includes a geomechanical module, which is configured as follows:

[0034] Store geomechanical models;

[0035] The geomechanical model was calibrated and optimized based on actual tracer diffusion data collected at multiple locations.

[0036] The beneficial effects of this invention are:

[0037] This invention revolutionizes the grouting operation by integrating adaptive proportional mixing, in-situ monitoring while drilling, and intelligent correlation diagnosis. The mechanical adaptive mixing device, driven by the kinetic energy of the grout, passively and adaptively maintains a constant tracer mixing ratio, ensuring the reliability of the detection signal from the source. The real-time monitoring unit while drilling enables in-situ, synchronous acquisition of hydrological data and tracer concentration, overcoming the challenge of data asynchrony. The intelligent diagnostic decision matrix constructed by the central control system, through cross-analysis of concentration and water absorption data, can not only accurately determine the direct filling effect of the grout but also identify indirect effects caused by stress field changes. Furthermore, its built-in self-checking mechanism eliminates equipment malfunction interference, ensuring accurate diagnostic conclusions. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] in:

[0040] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0041] Figure 2 A structural schematic diagram of the mobile platform, grouting system, and drilling system;

[0042] Figure 3 A schematic diagram of the adaptive tracer mixing device and slurry output pipe;

[0043] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle;

[0044] Figure 5 This is a schematic diagram of the adaptive tracer mixing device;

[0045] Figure 6 for Figure 5 Enlarged view of the structure at point B in the middle;

[0046] Figure 7 A schematic diagram of the metering pump mechanism, the fan-shaped stirring impeller, and the speed reduction transmission mechanism;

[0047] Figure 8 for Figure 7 Enlarged view of the structure at point C;

[0048] Figure 9 This is a flowchart illustrating the intelligent diagnostic decision-making logic.

[0049] In the picture:

[0050] 1. Mobile platform; 2. Grouting system; 3. Drilling system;

[0051] 4. Adaptive tracer mixing device; 41. Fan-shaped stirring impeller; 42. Reduction transmission mechanism; 43. Metering pump mechanism; 431. Liquid storage pipe; 432. Push plate; 44. Tracer storage tank; 45. Tracer injection pipe; 46. Liquid guiding pipeline; 47. Rotary joint; 48. Cavity; 49. Channel;

[0052] 5. Real-time monitoring unit while drilling; 6. Central control system; 7. Bypass sampling valve; 20. Slurry output pipe. Detailed Implementation

[0053] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0054] This invention provides a delamination grouting device based on water-retaining mining, such as... Figure 1-9 As shown, the specific implementation is as follows:

[0055] Example 1:

[0056] A delamination grouting device based on water-retaining mining, comprising:

[0057] Mobile platform 1;

[0058] The grouting system 2 and the drilling system 3 are installed on the mobile platform 1;

[0059] An adaptive tracer mixing device 4 is installed on the slurry output pipe 20 of the grouting system 2 to add and synchronously mix the tracer at a rate proportional to the slurry flow rate.

[0060] The real-time monitoring unit 5 is integrated on the drill pipe of the drilling system 3. It integrates a tracer sensor, a pressure sensor and a flow sensor to detect the tracer concentration, pressure and flow data in the return fluid in real time during the water pressure test.

[0061] The central control system 6 is communicatively connected to the grouting system 2, the adaptive tracer mixing device 4, and the real-time monitoring unit 5 while drilling, respectively.

[0062] The central control system 6 is configured as follows:

[0063] Acquire and store the baseline unit water absorption rate collected by the drilling system 3 and the real-time detection unit 5 before grouting;

[0064] After grouting, the mobile platform 1, drilling system 3 and real-time drilling detection unit 5 are controlled to perform movement detection and data acquisition.

[0065] Based on the baseline unit water absorption, real-time detected tracer concentration, and water pressure test data, a correlation diagnostic conclusion on the grouting filling effect is automatically generated.

[0066] In this embodiment, the equipment uses a mobile platform 1 as a carrier, which integrates a grouting system 2, a drilling system 3, an adaptive tracer mixing device 4, a real-time monitoring unit 5, and a central control system 6. The adaptive tracer mixing device 4 is connected in series with the grout output pipe 20 of the grouting system 2; the real-time monitoring unit 5 is directly integrated inside the drill pipe front end of the drilling system 3, and its built-in tracer, pressure, and flow sensor probes are in contact with the fluid channels inside the drill pipe.

[0067] First, the central control system 6 instructs the drilling system 3 to lay out multiple reference holes in the target area and uses the real-time monitoring unit 5 while drilling to complete the initial water pressure test, storing the measured water absorption per reference unit at each point in the system. This establishes an objective and quantitative initial baseline for evaluating the grouting effect, changing the traditional model that relies on subjective experience. Then, grouting operations are performed (the grouting system 2 injects external grout through pump suction), and the adaptive tracer mixing device 4 simultaneously adds tracer to the grout. After grouting, the central control system 6 schedules the mobile platform 1 to return sequentially to the pre-set locations of each reference hole or verification points laid out at very close range. Subsequently, the central control system 6 instructs the drilling system 3 to perform the following operations: if the original reference hole remains unobstructed, it is used directly; if the original hole is blocked due to grout or other reasons, a new test hole is drilled at the location closest to the original hole. This is to ensure that the test location and the reference measurement location are comparable in engineering geology. Then, the central control system 6 controls the real-time monitoring unit 5 while drilling to perform the water pressure test and simultaneously collect real-time data. Ultimately, the central control system 6 automatically generates diagnostic conclusions by correlating real-time data with stored baseline data.

[0068] Example 2:

[0069] A delamination grouting device based on water-retaining mining, comprising an adaptive tracer mixing device 4:

[0070] A fan-shaped stirring impeller 41 is rotatably disposed inside the slurry output pipe 20;

[0071] The speed reduction transmission mechanism 42 has its input shaft connected to the rotating shaft of the fan-shaped stirring impeller 41;

[0072] The metering pump mechanism 43 has its drive shaft connected to the output shaft of the speed reduction transmission mechanism 42;

[0073] The tracer storage tank 44 is connected to the inlet of the metering pump mechanism 43 via the liquid guide pipe 46;

[0074] The tracer injection tube 45 is connected to the outlet of the metering pump mechanism 43, and its outlet is located within the blade action area of ​​the fan-shaped impeller 41.

[0075] The flowing slurry drives the fan-shaped stirring impeller 41 to rotate, which in turn drives the metering pump mechanism 43 through the reduction transmission mechanism 42 to pump the tracer into the slurry and mix it synchronously.

[0076] The metering pump mechanism 43 includes a liquid storage tube 431, and a push plate 432 is slidably connected inside the liquid storage tube 431. The drive shaft of the push plate 432 is connected to the output shaft of the speed reduction transmission mechanism 42.

[0077] A cavity 48 is provided on the rotating shaft of the fan-shaped stirring impeller 41. The tracer injection tube 45 is connected to the cavity 48 through a rotary joint 47. A channel 49 for tracer discharge is inclinedly provided on the cavity 48.

[0078] The axis of the channel 49 and the axis of the fan-shaped stirring impeller 41 are at an angle of 30-60 degrees.

[0079] In this embodiment, the core of the device lies in a purely mechanical fluid feedback system. A fan-shaped impeller 41 is placed inside the slurry output pipe 20. When the slurry flows, it directly impacts the blades of the fan-shaped impeller 41, causing it to rotate. The shaft of the fan-shaped impeller 41 is connected to the input shaft of the reduction transmission mechanism 42. After reduction and torque amplification, the output shaft drives the metering pump mechanism 43.

[0080] The metering pump mechanism 43 includes a storage pipe 431 and an embedded pusher plate 432. The output shaft of the reduction transmission mechanism 42 is connected to the pusher plate 432 via a crank-connecting rod (not shown in the figure, as it is prior art and will not be described in detail), converting the rotational motion into the reciprocating linear motion of the pusher plate 432. The key is that the higher the slurry flow rate, the faster the rotational speed of the driving fan-shaped stirring impeller 41, which in turn leads to a synchronous increase in the reciprocating frequency of the pusher plate 432. This ensures that the volume of tracer pumped out per unit time is proportional to the slurry flow rate, achieving adaptive constant-proportion mixing without the need for external power or complex sensors.

[0081] Furthermore, to achieve instantaneous and efficient mixing of the tracer and slurry, the tracer injection pipe 45 is connected to a hollow cavity 48 located inside the impeller shaft via a rotary joint 47. The sidewalls of the hollow cavity 48 are inclined with several channels 49, their axes forming an angle of 30-60 degrees with the shaft axis. After being pumped out by the tracer metering pump mechanism 43, the tracer enters the high-speed rotating hollow cavity 48 through the rotary joint 47 and is ejected tangentially from the inclined channels 49 under strong centrifugal force. The dual effects of this design are: First, the tracer is directly thrown into the core area of ​​the turbulent slurry formed by the fan-shaped stirring impeller 41, gaining extremely high initial kinetic energy and easily being dispersed instantly; Second, the higher the slurry flow rate, the higher the rotation speed of the fan-shaped stirring impeller 41 and its hollow cavity 48, the greater the centrifugal force, the farther and faster the tracer is thrown out, and the more intense the shearing and mixing with the slurry, thus completely solving the technical problem of precipitation, agglomeration or uneven mixing that may occur due to simple injection of the tracer.

[0082] Example 3:

[0083] A delamination grouting device based on water-retaining mining, wherein the central control system 6 is configured to perform diagnostics in the following manner:

[0084] Real-time plotting and analysis of tracer concentration-time and unit water absorption-time curves;

[0085] When a characteristic peak is detected in the tracer concentration-time curve, and the value of the unit water absorption-time curve decreases significantly compared to the baseline value before grouting, the first type of conclusion, "direct filling of grout is effective," is generated.

[0086] The central control system 6 is also configured to generate a spatialized grouting effect evaluation map based on the benchmark unit water absorption and real-time detection data.

[0087] The central control system 6 is also configured to:

[0088] When the situation occurs where "the tracer test result is negative and the unit water absorption decreases significantly", a second type of conclusion is generated: "the stress field change leads to crack closure".

[0089] The system is also equipped with a bypass sampling valve 7, which is used to directly guide the slurry sample from the slurry output pipe 20 to the verification tracer sensor for self-testing; before generating the second type of conclusion, the central control system 6 prioritizes controlling the bypass sampling valve 7 to perform self-testing to confirm that the tracer dosing and detection functions are normal.

[0090] The central control system 6 also includes a geomechanical module, which is configured as follows:

[0091] Store geomechanical models;

[0092] The geomechanical model was calibrated and optimized based on actual tracer diffusion data collected at multiple locations.

[0093] In this embodiment, the central control system 6 dispatches the mobile platform 1 to the target work area. The drilling system 3 drills holes at multiple planned locations, and the real-time monitoring unit 5 integrated at the front end of the drill pipe simultaneously performs the initial water pressure test. The tracer sensor, pressure sensor, and flow sensor built into the real-time monitoring unit 5 collect raw data of the return fluid. The central control system 6 calculates and stores the baseline unit water absorption at each point, thereby establishing an objective quantitative baseline for evaluating the grouting effect.

[0094] Grouting system 2 is activated. As the slurry flows through slurry output pipe 20, it drives the core component of the adaptive tracer mixing device 4—the fan-shaped stirring impeller 41—to rotate. The mechanical kinetic energy of the fan-shaped stirring impeller 41 is transmitted through a reduction transmission mechanism 42, driving the pusher plate 432 of the metering pump mechanism 43 to reciprocate, thereby precisely pumping the tracer from the tracer storage tank 44 out through the liquid guide pipe 46. The tracer enters the cavity 48 within the impeller shaft through the tracer injection pipe 45 and rotary joint 47, and is finally thrown into the turbulent core of the slurry from the inclined channel 49 under the action of centrifugal force, achieving instantaneous and uniform mixing. This purely mechanical feedback design ensures that the tracer addition rate is strictly proportional to the slurry flow rate, maintaining a constant mixing ratio.

[0095] After grouting is completed, the mobile platform 1 carries the equipment back to the reference points or the nearby testing locations confirmed by the project. The drilling system 3 performs drilling operations (using the original hole or drilling a new hole nearby), and the real-time monitoring unit 5 then performs a water pressure test and collects the tracer concentration, pressure and flow rate data in the return fluid in real time, and uploads them to the central control system 6.

[0096] The central control system 6 performs correlation analysis between the real-time detected tracer concentration and the calculated change in unit water absorption (compared with the baseline value) to form an intelligent diagnostic decision matrix, in order to distinguish various complex situations (such as... Figure 9 (as shown)

[0097] When the tracer test is positive and the unit water absorption decreases significantly, the system generates a definitive conclusion that "direct filling of slurry is effective," confirming that the slurry has reached and sealed the crack.

[0098] When the tracer test is positive, but the unit water absorption does not decrease or even increases, the system generates an early warning of "slurry channel connected but sealing ineffective", indicating that there may be a risk of slurry short circuit or splitting, and the process needs to be adjusted.

[0099] When the tracer test is negative, but the unit water absorption decreases significantly, this situation may stem from a real change in the stress field or from equipment malfunction. In this case, the system prioritizes activating the hardware self-test loop consisting of the bypass sampling valve 7. The bypass sampling valve 7 opens, and a slurry sample known to contain tracer is directly introduced into the verification tracer sensor of the bypass sampling valve 7 for verification. If the self-test passes, equipment malfunction is ruled out, and the system generates the conclusion that "stress field change leads to crack closure," scientifically assessing the indirect mechanical effects of grouting; if the self-test fails, an equipment malfunction alarm is issued.

[0100] When the tracer test is negative and the unit water absorption remains unchanged, the system determines that the point is not significantly affected by this grouting, thus objectively defining the effective boundary of the project.

[0101] Ultimately, the diagnostic conclusions from all monitoring points are integrated into a visualized spatial grouting effect assessment map. Simultaneously, the actual diffusion data of the tracer accumulated throughout the process is automatically fed into the geomechanical module within the central control system 6, for continuous calibration and optimization of the built-in geomechanical model, allowing its predictive ability for future grout flow direction to continuously evolve in practice.

[0102] The working process of the delamination grouting equipment based on water-retaining mining provided by this invention is as follows:

[0103] Under the scheduling of the central control system 6, the mobile platform 1 first carries the equipment to the target area. The drilling system 3 drills at multiple predetermined locations, and the real-time monitoring unit 5 integrated at the front end of the drill rod simultaneously performs the initial water pressure test. The tracer sensor, pressure sensor and flow sensor inside the unit collect data, and the central control system 6 calculates and stores the baseline unit water absorption at each point to establish an evaluation baseline.

[0104] Subsequently, the grouting system 2 is activated. As the grout flows through the grout output pipe 20, it drives the fan-shaped stirring impeller 41 within the adaptive tracer mixing device 4 to rotate. The rotation of the fan-shaped stirring impeller 41 is transmitted to the metering pump mechanism 43 via the reduction transmission mechanism 42, driving its pusher plate 432 to reciprocate, thereby pumping the tracer in the tracer storage tank 44 out through the liquid guide pipe 46. The tracer enters the cavity 48 within the impeller shaft via the tracer injection pipe 45 and the rotary joint 47, and is finally centrifugally ejected from the inclined channel 49, achieving instantaneous and uniform mixing with the grout. During this process, the grout flow rate directly determines the rotational speed of the fan-shaped stirring impeller 41 and the reciprocating frequency of the pusher plate 432, thereby automatically maintaining a constant mixing ratio between the tracer and the grout.

[0105] After grouting is completed, the mobile platform 1 returns to the reference points or nearby locations. The drilling system 3 operates in the original hole or a new hole, and the real-time monitoring unit 5 performs a water pressure test again, collecting and uploading data on the tracer concentration, pressure, and flow rate in the return fluid in real time.

[0106] The central control system 6 uses real-time data and stored baseline data to perform intelligent diagnosis by plotting and correlating the "tracer concentration-time" and "unit water absorption-time" curves. If a tracer concentration peak is detected and the unit water absorption decreases significantly, it is determined that the direct filling of the slurry is effective; if only the unit water absorption decreases without a tracer signal, the system, after confirming that the equipment is normal through a bypass sampling valve 7, determines that the crack closure is caused by a change in the stress field. All diagnostic results can be integrated into a spatialized effect evaluation map.

[0107] Meanwhile, the geomechanical module within the central control system 6 collects actual diffusion data of tracers at various points, continuously calibrates and optimizes the built-in geomechanical model, and improves the ability to predict future grouting flow direction.

[0108] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A delamination grouting device based on water-retaining mining, characterized in that, include: Mobile platform (1); The grouting system (2) and drilling system (3) are installed on the mobile platform (1). An adaptive tracer mixing device (4) is installed on the slurry output pipe (20) of the grouting system (2) for adding and synchronously mixing tracers at a rate proportional to the slurry flow rate; The real-time detection unit (5) is integrated on the drill pipe of the drilling system (3). It integrates a tracer sensor, a pressure sensor and a flow sensor to detect the tracer concentration, pressure and flow data in the return fluid in real time during the water pressure test. The central control system (6) is communicatively connected to the grouting system (2), the adaptive tracer mixing device (4), and the real-time detection unit (5) during drilling, respectively. The central control system (6) is configured as follows: Acquire and store the baseline unit water absorption collected by the drilling system (3) and the real-time detection unit (5) before grouting; After grouting, the mobile platform (1), drilling system (3) and real-time detection unit (5) are controlled to perform movement detection and data acquisition; Based on the benchmark unit water absorption and the real-time detected tracer concentration and water pressure test data, a correlation diagnostic conclusion on the grouting filling effect is automatically generated. The central control system (6) is configured to perform diagnostics in the following manner: Real-time plotting and analysis of "tracer concentration-time" curves and "unit water absorption-time" curves; When a characteristic peak is detected in the "tracer concentration-time" curve, and the value of the "unit water absorption-time" curve decreases significantly compared to the baseline value before grouting, the first type of conclusion "direct filling of grout is effective" is generated. The central control system (6) is also configured to generate a spatialized grouting effect evaluation map based on the benchmark unit water absorption and the real-time detected tracer concentration and water pressure test data. The central control system (6) is also configured to: When the situation occurs where "the tracer test result is negative and the unit water absorption decreases significantly", the second type of conclusion is generated: "the stress field change leads to crack closure".

2. The grouting equipment for water-retaining mining according to claim 1, characterized in that, The adaptive tracer mixing device (4) includes: A fan-shaped stirring impeller (41) is rotatably disposed inside the slurry output pipe (20); The speed reduction transmission mechanism (42) has its input shaft connected to the rotating shaft of the fan-shaped stirring impeller (41); A metering pump mechanism (43) has its drive shaft connected to the output shaft of the reduction transmission mechanism (42); The tracer storage tank (44) is connected to the inlet of the metering pump mechanism (43) via a liquid guide pipe (46); The tracer injection tube (45) is connected to the outlet of the metering pump mechanism (43), and its outlet is located within the blade action area of ​​the fan-shaped impeller (41). The flowing slurry drives the fan-shaped stirring impeller (41) to rotate, and then drives the metering pump mechanism (43) through the speed reduction transmission mechanism (42) to pump the tracer into the slurry and mix it synchronously.

3. The grouting equipment for water-retaining mining according to claim 2, characterized in that, The metering pump mechanism (43) includes a liquid storage tube (431), and a push plate (432) is slidably connected inside the liquid storage tube (431). The drive shaft of the push plate (432) is connected to the output shaft of the speed reduction transmission mechanism (42).

4. The grouting equipment for water-retaining mining according to claim 2, characterized in that, The fan-shaped impeller (41) has a cavity (48) on its rotating shaft. The tracer injection tube (45) is connected to the cavity (48) through a rotary joint (47). The cavity (48) is provided with an inclined channel (49) for tracer discharge.

5. The grouting equipment for water-retaining mining according to claim 4, characterized in that, The axis of the channel (49) and the axis of the fan-shaped stirring impeller (41) are at an angle of 30-60 degrees.

6. The grouting equipment for water-retaining mining according to claim 1, characterized in that, A bypass sampling valve (7) is also provided to directly guide the slurry sample from the slurry output pipe (20) to the verification tracer sensor for self-testing; before generating the second type of conclusion, the central control system (6) controls the bypass sampling valve (7) to perform self-testing to confirm that the tracer dosing and detection functions are normal.

7. The grouting equipment for water-retaining mining according to claim 1, characterized in that, The central control system (6) also includes a geomechanical module, which is configured as follows: Store geomechanical models; The geomechanical model was calibrated and optimized based on actual tracer diffusion data collected at multiple locations.

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