Rock mass seepage characteristic in-situ evaluation device suitable for engineering scale

Abstract

The invention belongs to the technical field of rock mass engineering, and discloses a rock mass seepage characteristic in-situ evaluation device suitable for engineering scale, the rock mass seepage characteristic in-situ evaluation device comprises a portable protective box capable of being opened and closed, a gas storage assembly is arranged in the protective box and is communicated with an external compressed gas source; the buffer assembly comprises a buffer gas cylinder arranged in the protection box, the buffer gas cylinder communicates with an outlet of the gas storage assembly through a communication module, and an outlet of the buffer gas cylinder communicates with a monitoring module; the evaluation assembly comprises a three-way valve; an inlet of the three-way valve is communicated with the buffer gas cylinder; a first outlet of the three-way valve is communicated with the inner cavity of the test hole; and a second outlet of the three-way valve is communicated with sealing plugs at two ends of the test hole. The whole set of device is small, portable, compact in structure, free of plug-in and wide in application range, the purposes of improving the engineering scale rock mass seepage characteristic in-situ evaluation efficiency, widening the test scene and reducing the test risk are achieved, and the safety of testers and equipment is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of rock mass engineering technology, and in particular to an in-situ evaluation device for rock mass seepage characteristics suitable for engineering scale. Background Art

[0002] In various deep geological engineering projects, accurate permeability measurement is crucial for evaluating the effectiveness of surrounding rock grouting reinforcement, deep rock fracturing, and the sealing performance of deep chamber barrier systems. In recent years, to address shortcomings such as the limited scope of core-scale testing, the difficulty in maintaining specimens in their original state, and the inability of test results to directly guide engineering practice, numerous researchers have conducted research on engineering-scale in-situ gas permeability testing, developing a variety of permeability testing methods and supporting testing devices.

[0003] Although a variety of engineering-scale in-situ gas permeability test methods and supporting test devices have been developed, most test devices have defects such as being large, heavy, not easy to carry, requiring plugging in for operation, and consuming high power. These defects make them unsuitable for many actual engineering scenarios and may lead to slow test progress, increased test risks, or the inability to conduct tests due to the test site being unable to meet power requirements.

[0004] Therefore, the present application designs an in-situ evaluation device for rock seepage characteristics suitable for engineering scale to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an in-situ evaluation device for rock seepage characteristics suitable for engineering scale, so as to solve the problems existing in the prior art, improve the testing efficiency of engineering scale in-situ gas permeability, broaden the testing scenarios, and reduce the test risks.

[0006] To achieve the above-mentioned object, the present invention provides the following solution: The present invention provides an in-situ evaluation device for rock mass seepage characteristics suitable for engineering scale, comprising:

[0007] A protective box that can be opened and closed and is easy to carry;

[0008] An air storage assembly is disposed in the protective box, and an inlet of the air storage assembly extends out of the protective box and is connected to an external compressed air source;

[0009] A buffer assembly, the buffer assembly comprising a buffer gas cylinder disposed in the protective box, the buffer gas cylinder being connected to the outlet of the gas storage assembly via a communication module, and the outlet of the buffer gas cylinder being connected to a monitoring module;

[0010] The evaluation component includes a three-way valve, the inlet of the three-way valve is connected to the buffer gas cylinder; the first outlet of the three-way valve is connected to the inner cavity of the test hole, and the second outlet of the three-way valve is connected to the sealing plugs arranged at both ends of the test hole.

[0011] Preferably, the connecting module includes a first connecting pipe connected between the buffer gas cylinder and the gas storage assembly, the first connecting pipe is connected to a pressure regulating pipe, the pressure regulating pipe extends out of the protective box, and a pressure regulating valve is provided on the pressure regulating pipe.

[0012] Preferably, a second control valve and a third control valve are provided in series on the first communicating pipe, and the pressure regulating pipe is communicated with the first communicating pipe provided between the second control valve and the third control valve.

[0013] Preferably, the evaluation component also includes a fifth control valve, which is fixedly mounted on the outer wall of the protective box, the outlet of the fifth control valve is connected to the three-way valve, and the inlet of the fifth control valve is connected to the buffer gas cylinder through a second connecting pipe.

[0014] Preferably, the monitoring module includes a monitoring tube connected to the second connecting tube, and the monitoring tube is connected to a pressure gauge fixedly installed in the protection box.

[0015] Preferably, the gas storage assembly includes a storage gas cylinder fixedly installed in the protective box, the inlet of the storage gas cylinder is connected to the external compressed gas source through the air intake module, and the outlet of the storage gas cylinder is connected to the second control valve.

[0016] Preferably, the air intake module includes a first control valve connected to the inlet of the storage gas cylinder, the first control valve is connected to an air intake pipe, the air intake pipe is connected to a quick connector embedded in the protective box, and the quick connector is connected to a compressed air source.

[0017] Preferably, the protection box is provided with a protective cover that can be opened and closed, and the protective cover is provided on the quick connector.

[0018] Preferably, an exhaust port is embedded in the protective box, and the exhaust port is connected to the pressure regulating pipe.

[0019] Preferably, the protective box includes a box body, and the box body is provided with an openable and closable box cover, and the box cover is detachably connected to the box body through a locking buckle.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects: the present invention proposes an in-situ evaluation device for rock seepage characteristics suitable for engineering scale, which is mainly composed of a protective box and a gas storage component, a buffer component and an evaluation component arranged in the protective box. The gas storage component, the buffer component and the evaluation component are integrated in the protective box, covering the basic functions of the original complex test device to form an integrated device, reducing the number and complexity of equipment, and making the operation more convenient. It avoids the safety hazards caused by the large size and high power requirements of traditional test devices, reduces the test risk, and ensures the safety of testers and equipment; the protective box can be opened and closed and is portable, which is convenient to carry to different engineering sites, solving the problem of large size and difficulty in portability of traditional test devices, broadening the test scenarios, and improving the flexibility of the test; at the same time, the protective box is closed when not in use, which is convenient for providing protection for the internal components. Improve the safety of the equipment; the buffer gas cylinder and monitoring module in the buffer component can stabilize the gas pressure and monitor it in real time, providing a stable gas source and accurate data support for the evaluation. The evaluation component controls the inflation of the sealing plug and the inner cavity of the test hole through a three-way valve. It is simple to operate and can effectively perform in-situ evaluation of the rock seepage characteristics, improving the test efficiency and accuracy. The gas storage component replaces the original large gas cylinder / air compressor as a gas source device, and the test gas uses pure argon or nitrogen, eliminating the original gas filter. The monitoring module is embedded in the device to replace the original gas pressure measurement system, which can intuitively observe the pressure changes during the seepage process. The two outlets of the three-way valve of the evaluation component are connected to the test hole and the sealing structure respectively, and gas is used instead of water to pressurize the expansion plug to complete the sealing operation. One set of equipment is used to simultaneously complete the pressurization of the expansion plug and the gas injection operation of the test section, eliminating the original water pressure pump.

[0021] The entire device of the present invention is small and portable, compact in structure, does not require electricity, and has a wide range of applications. It achieves the purpose of improving the efficiency of in-situ evaluation of rock seepage characteristics at an engineering scale, broadening test scenarios, and reducing test risks, thereby ensuring the safety of test personnel and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0023] Figure 1 This is an axial view of the in-situ evaluation device for rock mass seepage characteristics applicable to engineering scale according to the present invention;

[0024] Figure 2 Schematic diagram of an in-situ evaluation device for rock mass seepage characteristics applicable to engineering scale according to the present invention;

[0025] Figure 3 For the present invention Figure 2 A partial enlarged view of middle A;

[0026] In the figure: 1. Protective box; 2. Gas storage component; 3. Buffer component; 4. Evaluation component; 11. Box body; 12. Box cover; 13. Locking buckle; 14. Handle; 15. Protective cover; 21. Storage gas cylinder; 22. First control valve; 23. Inlet pipe; 24. Quick connector; 31. Buffer gas cylinder; 32. First connecting pipe; 33. Pressure regulating pipe; 34. Pressure regulating valve; 35. Second control valve; 36. Third control valve; 37. Exhaust port; 41. Three-way valve; 42. First outlet; 43. Second outlet; 44. Fifth control valve; 45. Second connecting pipe; 46. Monitoring pipe; 47. Pressure gauge; 48. Fourth control valve. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figure 1-Figure 3 As shown, this embodiment provides an in-situ evaluation device for rock mass seepage characteristics applicable to engineering scale, comprising:

[0030] The protective box 1 can be opened and closed and is easy to carry;

[0031] The gas storage assembly 2 is arranged in the protective box 1, and the inlet of the gas storage assembly 2 extends out of the protective box 1 and is connected to the external compressed gas source;

[0032] The buffer assembly 3 includes a buffer gas cylinder 31 disposed in the protective box 1. The buffer gas cylinder 31 is connected to the outlet of the gas storage assembly 2 through a communication module. The outlet of the buffer gas cylinder 31 is connected to the monitoring module.

[0033] Evaluation component 4, evaluation component 4 includes a three-way valve 41, the inlet of the three-way valve 41 is connected to the buffer gas cylinder 31; the first outlet 42 of the three-way valve 41 is connected to the inner cavity of the test hole, and the second outlet 43 of the three-way valve 41 is connected to the sealing plugs arranged at both ends of the test hole.

[0034] The present invention proposes an in-situ evaluation device for rock seepage characteristics suitable for engineering scale, which is mainly composed of a protective box 1 and an air storage component 2, a buffer component 3 and an evaluation component 4 arranged in the protective box 1. The air storage component 2, the buffer component 3 and the evaluation component 4 are integrated in the protective box 1, covering the basic functions of the original complex test device to form an integrated device, reducing the number and complexity of equipment, making operation more convenient, avoiding the safety hazards caused by the large size and high power requirements of traditional test devices, reducing test risks, and ensuring the safety of testers and equipment; the protective box 1 can be opened and closed and is portable, which is convenient to carry to different engineering sites, solving the problem that traditional test devices are large in size and not easy to carry, broadening the test scenarios, and improving the flexibility of the test; at the same time, the protective box 1 is closed when not in use, which is convenient for providing protection for the internal components and improving the safety of the equipment; the buffer The buffer gas cylinder 31 and monitoring module in component 3 can stabilize the gas pressure and monitor it in real time, providing a stable gas source and accurate data support for the evaluation. The evaluation component 4 controls the inflation of the sealing plug and the inner cavity of the test hole through the three-way valve 41 respectively. It is simple to operate and can effectively perform in-situ evaluation of the rock seepage characteristics, thereby improving the test efficiency and accuracy. The gas storage component 2 replaces the original large gas cylinder / air compressor as a gas source device, and the test gas uses pure argon or nitrogen, eliminating the original gas filter. The monitoring module is embedded in the device to replace the original gas pressure measurement system, which can intuitively observe the pressure changes during the seepage process. The two outlets of the three-way valve 41 of the evaluation component 4 are respectively connected to the test hole and the sealing structure, and gas is used instead of water to pressurize the expansion plug to complete the sealing operation. A set of equipment is used to simultaneously complete the pressurization of the expansion plug and the gas injection operation of the test section, eliminating the original water pressure pump.

[0035] The entire device of the present invention is small and portable, compact in structure, does not require electricity, and has a wide range of applications. It achieves the purpose of improving the efficiency of in-situ evaluation of rock seepage characteristics at an engineering scale, broadening test scenarios, and reducing test risks, thereby ensuring the safety of test personnel and equipment.

[0036] Working steps:

[0037] Preparation: Open the protective box 1, connect the inlet of the gas storage component 2 to the external compressed air source, and close the protective box 1. Use the external compressed air source to inflate the gas storage component 2, and disconnect it when completed.

[0038] Buffering and pressure regulation: Open the protective box 1 and use the connecting module to allow the gas storage assembly 2 to charge the buffer gas cylinder 31. Observe the monitoring module and stop charging when the gas pressure in the buffer gas cylinder 31 reaches the appropriate value. If the pressure is too high, adjust it using relevant components.

[0039] Sealing and Evaluation: Connect the device to the test hole and, through three-way valve 41, inflate the buffer gas cylinder 31 into the sealing plugs at both ends of the test hole to complete the seal. Then, operate three-way valve 41 again to allow the buffer gas cylinder 31 to inflate the test hole. Use the monitoring module to record data and evaluate the rock mass seepage characteristics.

[0040] As a further optimization, the communication module includes a first communication tube 32 connecting the buffer gas cylinder 31 and the gas storage assembly 2. This first communication tube 32 is connected to a pressure-regulating tube 33, which extends out of the protective box 1 and is equipped with a pressure-regulating valve 34. The addition of the pressure-regulating tube 33 and the pressure-regulating valve 34 to the communication module regulates the inflation pressure of the buffer gas cylinder 31. During inflation, if the pressure in the buffer gas cylinder 31 is too high, the pressure-regulating valve 34 is opened, and the pressure is adjusted through the pressure-regulating tube 33. This allows for precise control of the gas pressure in the buffer gas cylinder 31, ensuring stable gas source pressure during testing and improving test accuracy.

[0041] To further optimize the solution, a second control valve 35 and a third control valve 36 are connected in series to the first connecting pipe 32, and a pressure regulating pipe 33 is connected to the first connecting pipe 32, which is located between the second and third control valves 35, 36. The second and third control valves 35, 36 are connected in series to the first connecting pipe 32, and in conjunction with the pressure regulating pipe 33, more precisely control the flow direction and pressure of gas. Closing the second and third control valves 35, 36, combined with the pressure regulating valve 34, allows for flexible control of the charging process and pressure regulation of the buffer gas cylinder 31 from the gas storage assembly 2, enhancing control over the charging process, further optimizing pressure regulation of the buffer gas cylinder 31, and improving the stability and reliability of the device.

[0042] As a further optimization, the evaluation component 4 also includes a fifth control valve 44, which is fixedly mounted on the outer wall of the protective box 1. The outlet of the fifth control valve 44 is connected to the three-way valve 41, and the inlet of the fifth control valve 44 is connected to the buffer gas cylinder 31 via a second connecting pipe 45. The addition of the fifth control valve 44 to the evaluation component 4 optimizes the gas delivery control between the buffer gas cylinder 31 and the three-way valve 41. When evaluating the seepage characteristics, the fifth control valve 44 is opened to control the delivery of gas from the buffer gas cylinder 31 to the three-way valve 41, thereby controlling the sealing of the test hole and the gas injection operation. This additional gas delivery control link makes the operation of the evaluation component 4 more precise and improves the controllability of the testing process.

[0043] In a further optimization, the monitoring module includes a monitoring tube 46 connected to the second connecting tube 45. This tube is in communication with a pressure gauge 47 fixedly mounted within the protective box 1. The monitoring module monitors the pressure of the gas output from the buffer gas cylinder 31 via the monitoring tube 46 and the pressure gauge 47. During the test, the pressure gauge 47 provides real-time information on the pressure changes in the gas output from the buffer gas cylinder 31, providing real-time pressure data to the tester, facilitating timely adjustments to the test procedure and ensuring test accuracy. Furthermore, when performing seepage assessments, the pressure data displayed by the pressure gauge 47 also reflects the pressure changes within the test hole.

[0044] As a further optimization, the gas storage assembly 2 includes a storage gas cylinder 21 fixedly mounted within the protective box 1. The inlet of the storage gas cylinder 21 is connected to an external compressed gas source via an air intake module, and the outlet of the storage gas cylinder 21 is connected to a second control valve 35. The gas storage assembly 2 uses the storage gas cylinder 21 as the main gas storage body. Pure argon or nitrogen provided by an external compressed gas source is inflated into the storage gas cylinder 21 via the air intake module. The storage gas cylinder 21 supplies gas for subsequent testing, ensuring stable gas storage and supply functions and providing a reliable gas source for testing. At the same time, the provision of the storage gas cylinder 21 also ensures that the device has its own gas source, allowing it to be used without being connected to an external compressed gas source, further improving the device's portability.

[0045] In a further optimization, the air intake module includes a first control valve 22 connected to the inlet of the storage gas cylinder 21. This first control valve 22 is connected to an air intake pipe 23, which in turn is connected to a quick connector 24 embedded in the protective box 1. This quick connector 24 is connected to a compressed air source. The air intake module quick connector 24 connects to the compressed air source, opens the first control valve 22 to initiate inflation, and closes it to stop inflation. This simplifies the connection to the compressed air source, enables convenient inflation control, and improves test preparation efficiency.

[0046] In one embodiment of the present application, the quick connector 24 of the present application is a mechanical pipe fitting that can realize quick connection or disconnection of pipelines without tools, and is widely used in many fields.

[0047] Structure: Generally consists of a plug, socket, seal and locking device. The plug and socket work together, the seal ensures the tightness of the connection to prevent leakage, and the locking device ensures the firmness of the connection.

[0048] Classification: According to the connection method, it can be divided into threaded connection, ferrule connection, quick-tighten connection, etc.; according to the material, it can be divided into metal such as copper, stainless steel and non-metal such as plastic quick connector 24; according to the purpose, it can be divided into hydraulic quick connector 24, pneumatic quick connector 24, electrical quick connector 24, etc.

[0049] Working Principle: Taking the common pneumatic quick connector 24 as an example, when the plug is inserted into the socket, the internal seal fits tightly, preventing gas leakage. At the same time, the locking mechanism automatically locks the plug, ensuring a secure connection. To disconnect, simply operate the unlocking mechanism and the plug can be easily removed.

[0050] Application Scenario

[0051] Industrial Manufacturing: Used in automotive manufacturing, machining, and other production lines, quick-connect and disconnect hydraulic and pneumatic lines improves production efficiency. For example, on automotive production lines, the hydraulic systems of robotic arms frequently require tool changes, and the Quick Connector 24 allows for rapid connection and disconnection of hydraulic lines.

[0052] Aerospace: Quick connectors 24 are used in aircraft fuel, hydraulic, and pneumatic systems to facilitate equipment maintenance and component replacement. For example, during aircraft engine maintenance, quick connectors 24 can quickly connect test equipment to monitor engine performance.

[0053] Daily life: For example, a household high-pressure water gun can be quickly connected to a water source through the quick connector 24, making it convenient for users to use.

[0054] As a further optimization, the protective box 1 is provided with an openable and closable protective cover 15, which covers the quick connector 24. The protective cover 15 is provided on the protective box 1 to protect the quick connector 24. The protective cover 15 is opened when connecting the gas source and closed after the connection, thereby preventing damage to the quick connector 24, protecting the quick connector 24, extending its service life, and ensuring the reliability of the device connection components.

[0055] As a further optimization, an exhaust port 37 is embedded in the protective box 1 and connected to the pressure regulating pipe 33. The exhaust port 37 connected to the pressure regulating pipe 33 is provided in the protective box 1 to discharge excess gas during pressure regulation, thereby ensuring the safety of the pressure regulation operation, preventing excessive pressure in the box, and eliminating safety hazards.

[0056] In a further optimized solution, the protective box 1 includes a box body 11, which is provided with an openable and closable box cover 12, and the box cover 12 is detachably connected to the box body 11 via a locking buckle 13. In one embodiment of the present application, the exhaust port is embedded in the protective box 1.

[0057] The protective box 1 includes a box body 11, a box cover 12 and a locking buckle 13, which is convenient for opening, closing and fixing. When in use, open the locking buckle 13 to open the box cover 12 and operate the device; after the operation is completed, close the box cover 12 and fasten the locking buckle 13, which facilitates the installation, maintenance and use of the internal components of the device, and protects the internal components from the influence of the external environment.

[0058] In one embodiment of the present application, a foldable and flippable handle 14 is provided on the box body 11 to facilitate carrying by the evaluator.

[0059] The operation process of the evaluation process:

[0060] ① Before the test begins, open the first control valve 22 and keep the other valves closed. Connect the external gas source (large gas cylinder) through the quick connector 24 to fill the storage gas cylinder 21 with gas, which will serve as the gas source for the test. After it is filled, close the first control valve 22.

[0061] ② Open the second control valve 35 and slowly open the third control valve 36. Fill the buffer gas cylinder 31 with gas from the storage gas cylinder 21 and observe the pressure gauge 47. When the pressure gauge 47 reaches the preset pressure, close the second control valve 35 and the third control valve 36. If the pressure in the buffer gas cylinder 31 is greater than the preset pressure, close only the second control valve 35, keep the third control valve 36 open, open the pressure regulating valve 34 to adjust the gas pressure, and then close the third control valve 36 and the pressure regulating valve 34.

[0062] ③ Open the fourth control valve 48 and the fifth control valve 44, then open the first outlet 42 of the three-way valve 41, inject gas from the buffer gas cylinder 31 into the sealing plug to meet the sealing requirements, and then close the first outlet 42, the fourth control valve 48, and the fifth control valve 44;

[0063] ④ After repeating step ②, open the fourth control valve 48 and the fifth control valve 44, then open the second outlet 43 of the three-way valve 41, and inject gas from the buffer gas cylinder 31 into the test section in the test hole to perform in-situ evaluation of engineering-scale rock seepage (gas) characteristics.

[0064] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0065] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. An in-situ evaluation device for rock mass seepage characteristics suitable for engineering scale, characterized in that: include: A protective box (1), the protective box (1) is openable and closable and easy to carry; An air storage assembly (2), the air storage assembly (2) being arranged in the protection box (1), the inlet of the air storage assembly (2) extending out of the protection box (1) and being in communication with an external compressed air source; A buffer assembly (3), the buffer assembly (3) comprising a buffer gas cylinder (31) disposed in the protective box (1), the buffer gas cylinder (31) being in communication with the outlet of the gas storage assembly (2) via a communication module, and the outlet of the buffer gas cylinder (31) being in communication with a monitoring module; An evaluation component (4) includes a three-way valve (41), an inlet of the three-way valve (41) is connected to the buffer gas cylinder (31); a first outlet (42) of the three-way valve (41) is connected to the inner cavity of the test hole, and a second outlet (43) of the three-way valve (41) is connected to sealing plugs arranged at both ends of the test hole.

2. The in-situ evaluation device for rock mass seepage characteristics applicable to engineering scale according to claim 1 is characterized in that: The communication module comprises a first communication pipe (32) connected between the buffer gas cylinder (31) and the gas storage assembly (2), the first communication pipe (32) being connected to a pressure regulating pipe (33), the pressure regulating pipe (33) extending out of the protection box (1), and a pressure regulating valve (34) being provided on the pressure regulating pipe (33).

3. The in-situ evaluation device for rock mass seepage characteristics applicable to engineering scale according to claim 2 is characterized in that: A second control valve (35) and a third control valve (36) are arranged in series on the first communicating pipe (32), and the pressure regulating pipe (33) is communicated with the first communicating pipe (32) arranged between the second control valve (35) and the third control valve (36).

4. The in-situ evaluation device for rock mass seepage characteristics applicable to engineering scale according to claim 1 is characterized in that: The evaluation component (4) further includes a fifth control valve (44), which is fixedly mounted on the outer wall of the protection box (1), the outlet of the fifth control valve (44) being connected to the three-way valve (41), and the inlet of the fifth control valve (44) being connected to the buffer gas cylinder (31) via a second connecting pipe (45).

5. The in-situ evaluation device for rock mass seepage characteristics applicable to engineering scale according to claim 4 is characterized in that: The monitoring module comprises a monitoring tube (46) in communication with the second communicating tube (45), and the monitoring tube (46) is in communication with a pressure gauge (47) fixedly installed in the protection box (1).

6. The in-situ evaluation device for rock mass seepage characteristics applicable to engineering scale according to claim 3 is characterized in that: The gas storage assembly (2) comprises a gas storage cylinder (21) fixedly mounted in the protective box (1); the inlet of the gas storage cylinder (21) is connected to an external compressed gas source via an air intake module; and the outlet of the gas storage cylinder (21) is connected to the second control valve (35).

7. The in-situ evaluation device for rock mass seepage characteristics applicable to engineering scale according to claim 6, characterized in that: The air intake module comprises a first control valve (22) connected to the inlet of the storage gas cylinder (21), the first control valve (22) is connected to an air intake pipe (23), the air intake pipe (23) is connected to a quick connector (24) embedded in the protective box (1), and the quick connector (24) is connected to a compressed air source.

8. The in-situ evaluation device for rock mass seepage characteristics applicable to engineering scale according to claim 7, characterized in that: The protection box (1) is provided with a protective cover (15) that can be opened and closed, and the protective cover (15) is provided on the quick connector (24).

9. The in-situ evaluation device for rock mass seepage characteristics applicable to engineering scale according to claim 2, characterized in that: An exhaust port (37) is embedded in the protection box (1), and the exhaust port (37) is communicated with the pressure regulating pipe (33).

10. The in-situ evaluation device for rock mass seepage characteristics applicable to engineering scale according to claim 1, characterized in that: The protective box (1) comprises a box body (11), an openable and closable box cover (12) is provided on the box body (11), and the box cover (12) and the box body (11) are detachably connected via a locking buckle (13).

Images