Radar detection device for expanding excavation supporting construction of underground powerhouse

Abstract

The invention relates to a radar detection device for underground powerhouse expanding excavation supporting construction, which comprises a device upper frame and a device lower frame, the device upper frame and the device lower frame are connected through a plurality of connecting rod bodies, a plurality of mounting frame bodies are arranged between the device upper frame and the device lower frame, and a first driving motor is mounted at the top of each mounting frame body; the first driving motor is installed at the bottom of the device upper frame, a first supporting leg frame body is installed in the installation frame body, a first detection radar is installed on the side face of the first supporting leg frame body, a dust falling assembly is arranged in the first supporting leg frame body and used for falling dust during radar detection, and the bottom of the first supporting leg frame body is connected with a second supporting leg frame body through a second driving motor. According to the device, lifting, translation and multi-axis rotation adjustment of detection radars are achieved, the device is driven to move and detect without being held by hands, detection is conducted by combining multiple radars, all detection areas of an underground workshop are fully covered in the walking process of the device, and the problems that traditional equipment is single in adjustment and has detection blind areas are solved.

Description

Technical Field

[0001] This invention relates to the field of underground powerhouse excavation and support construction, specifically to a radar detection device for underground powerhouse excavation and support construction. Background Technology

[0002] Geological forecasting for underground powerhouse excavation and support construction is conducted using ground-penetrating radar. Based on the survey results, the main safety risks ahead are predicted, guiding the underground powerhouse excavation and support construction. In existing technologies, ground-penetrating radar forecasting for underground powerhouse excavation and support construction generally uses handheld radar equipment or existing radar forecasting auxiliary equipment. During the forecasting process using handheld radar equipment, the surveying personnel are exposed to the unsupported excavation section, posing a safety risk of injury from falling rocks or local collapses.

[0003] According to the published patent CN216748080U, an auxiliary device for geological radar detection includes a base, a rotating shaft assembly on the base, a robotic arm on the rotating shaft assembly, and a radar fixator at the end of the robotic arm. The robotic arm includes a telescopic crossbar with a spherical mounting groove at its end. The radar fixator includes a fixed plate with a rotating sphere on one side, which is installed in the spherical mounting groove. A geological radar is installed on the other side of the fixed plate. This application, by adjusting the size of the fixator, can be applied to any type of tunnel geological prediction radar. By adjusting the length of the robotic arm, the detection work can be carried out within a safe range, avoiding the exposure of detection personnel to unsupported excavated sections of the tunnel, and fully protecting detection personnel from the threat of falling rocks or local collapse of the tunnel face. Moreover, the structure is simple, easy to assemble, and does not rely on large equipment such as locomotives or excavating equipment, thus saving construction time.

[0004] However, in practice, traditional radar detection devices, which adjust the detection distance via telescopic crossbars and achieve single-axis rotation adjustment of the radar mount via spherical mounting slots, have limited adjustment methods and ranges. Underground powerhouses require radar to perform multi-directional, multi-angle, and wide-area detection operations, but traditional equipment cannot achieve radar translation, lifting, or multi-axis rotation adjustments, making full-area detection difficult and resulting in numerous blind spots. Furthermore, the excavation and construction of underground powerhouses generate a large amount of dust, which easily adheres to the radar detection surface, obstructing the detection surface and interfering with radar wave transmission and reception, leading to distorted detection data and inaccurate geological prediction results. Moreover, after radar detection detects geological risks such as loose rock layers and fissures, immediate drilling and grouting support operations are required. Traditional equipment, however, requires the separate deployment of drilling and grouting equipment after detecting risks, resulting in cumbersome construction procedures, extended construction periods, and an inability to achieve integrated detection and support operations, leading to low construction efficiency. Therefore, a new technical solution is needed to address these issues. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and adapt to practical needs by providing a radar detection device for underground powerhouse excavation and support construction. This addresses the limitations of current traditional radar detection devices, which rely on telescopic crossbars to adjust the detection distance and spherical mounting slots to achieve single-axis rotation adjustment of the radar fixture. The adjustment methods and ranges are limited. Underground powerhouses are three-dimensional working surfaces requiring multi-directional, multi-angle, and large-area radar detection. Traditional equipment cannot achieve radar translation, lifting, or multi-axis rotation adjustments, making full-area detection difficult and resulting in numerous blind spots. Furthermore, the excavation process generates significant dust that easily adheres to the radar detection surface, obstructing the detection and interfering with radar wave transmission and reception, leading to distorted detection data and inaccurate geological predictions. Moreover, after radar detection identifies geological risks such as loose rock layers and fissures, immediate drilling and grouting support operations are required. Traditional equipment, however, requires separate deployment of drilling and grouting equipment after detecting risks, resulting in cumbersome construction procedures, extended construction periods, and inability to achieve integrated detection and support operations, leading to low construction efficiency.

[0006] To achieve the objectives of this invention, the technical solution adopted is as follows: A radar detection device for underground powerhouse excavation and support construction is designed, comprising an upper frame and a lower frame. The upper and lower frames are connected by multiple connecting rods. Multiple mounting frames are provided between the upper and lower frames. A first drive motor is installed on the top of each mounting frame and is mounted at the bottom of the upper frame. A first support leg is installed inside the mounting frame. A first detection radar is installed on the side of the first support leg, and a dust suppression component is provided inside for dust suppression during radar detection. A second support leg is connected to the bottom of the first support leg via a second drive motor. A fixed housing is installed on the top of the upper frame. A groove is provided on the top of the fixed housing, and a transmission component is provided inside the groove. The transmission component drives the detection component located on the top of the fixed housing to move.

[0007] Preferably, the dust suppression component includes a water pump, which is installed in the mounting frame and has a nozzle connected to its top.

[0008] Preferably, a water tank is installed between the upper and lower frames of the device, and a second detection radar is installed at the bottom of the lower frame. One end of a plurality of solenoid valves is connected to the surface of the water tank, and the other end of the plurality of solenoid valves is connected to a connecting pipe. One end of the connecting pipe is connected to a water pump inside the first support frame via a flexible hose.

[0009] Preferably, the water tank is connected to one end of a water pipe at both the top and bottom, and the other end of the water pipe is detachably connected to a first pipe cover.

[0010] Preferably, a third drive motor is installed inside the second support leg frame. The output shaft at the bottom of the third drive motor is connected to a threaded post. A drill bit is fixed at the bottom of the threaded post. An internal threaded sleeve is threadedly connected to the outside of the threaded post. A support foot is fixed at the bottom of the internal threaded sleeve.

[0011] Preferably, the transmission assembly includes a threaded rod, one end of which passes through a groove and a fixed housing and is connected to the output shaft of a fourth drive motor mounted on the outer side of the fixed housing via a coupling. The other end of the threaded rod is connected to a bearing mounted inside the groove. A movable block passes through the outside of the threaded rod, and a threaded hole in the movable block is connected to the threaded rod.

[0012] Preferably, the detection component includes a fifth drive motor, a movable block is connected to the bottom of the fifth drive motor, and a first fixed plate and a second fixed plate are fixed on both sides of the output shaft at the top of the fifth drive motor, respectively.

[0013] Preferably, a sixth drive motor is installed on the side of the first fixed plate. The output shaft of the sixth drive motor passes through the first fixed plate and is connected to a rotating rod located between the first and second fixed plates via a coupling. Both ends of the rotating rod are fixed with movable plates, and a dual-axis motor is installed at the end between the multiple movable plates.

[0014] Preferably, the output shafts at both ends of the dual-axis motor pass through the movable plate and are fixed to the first concave plate. A seventh drive motor is installed on the top of the first concave plate. The output shaft of the seventh drive motor is connected to the second concave plate. Telescopic cylinders are symmetrically installed on the inner wall of the second concave plate. The telescopic cylinders are connected to clamping plates through piston rods. Grouting heads are clamped between the clamping plates. Multiple third detection radars are symmetrically installed on the outer side of the second concave plate.

[0015] Preferably, one end of the grouting head is connected to a conveying pipe, and the other end of the conveying pipe is connected to a material pump. The material pump is installed on the surface of the grout tank and is used to extract the grout from the grout tank. The grout tank is installed between multiple movable plates, and both ends of the tank are connected to one end of a material pipe. The other end of the material pipe is detachably connected to a second pipe cover.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. This invention achieves lifting, translation, and multi-axis rotation adjustment of the detection radar through the combination of multiple drive motors. The first and second drive motors rotate and move the support frame, thereby driving the device to move and detect within the construction position, eliminating the need for manual handheld radar detection. The fourth drive motor, in conjunction with the threaded rod, drives the detection component to translate horizontally. The fifth, sixth, and seventh drive motors, in conjunction with the dual-axis motor, realize multi-angle rotation and fine adjustment of the detection component. At the same time, the first detection radar on the support frame, the second detection radar at the bottom of the device's lower frame, and the third detection radar on the second concave plate are combined to perform multi-radar detection. This enables comprehensive coverage of all detection areas in the underground plant during the device's movement, solving the problems of single adjustment and blind spots in traditional equipment, and significantly improving the comprehensiveness of geological exploration.

[0018] 2. This invention, through the combination of a water tank, solenoid valve, water pump, and nozzle, can spray water mist from multiple support positions onto the detection area during radar detection. This rapidly settles the dust generated during the excavation of the underground powerhouse, preventing dust from adhering to the radar detection surface, obstructing the detection surface, and interfering with the transmission and reception of radar waves. It solves the problems of data distortion and geological prediction deviation caused by dust, improves the authenticity and accuracy of the detection data, and provides reliable data support for geological risk prediction.

[0019] 3. This invention combines a drill bit, a grouting head, and a material pump. When radar detects geological risks such as loose rock layers and fissures, workers do not need to separately allocate drilling and grouting equipment. They can directly expose the drill bit at the bottom of the threaded column by removing the support legs and internal threaded sleeve, and use a drive motor to drive the drill bit to complete the drilling. Furthermore, grouting support can be directly performed through the grouting head, grout tank, and material pump, reducing construction time and improving the overall efficiency of underground powerhouse excavation and support construction. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the bottom structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the support frame structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of the groove in this invention;

[0024] Figure 5 This is a schematic diagram of the movable block structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the drill bit structure of the present invention;

[0026] Figure 7This is a schematic diagram of the water tank structure of the present invention;

[0027] In the diagram: 1. Device mounted on the frame; 101. Device lowered from the frame; 2. Mounting frame; 201. Water tank; 202. Second support leg frame; 203. Water pump; 204. Nozzle; 205. Second detection radar; 206. First drive motor; 207. Third drive motor; 208. Internal threaded sleeve; 209. First support leg frame; 210. Threaded post; 211. Drill bit; 212. Water pipe; 213. First pipe cap; 214. Solenoid valve; 215. Connecting pipe head; 216. First detection radar; 217. Second drive motor; 3. Fifth drive motor; 301. Second pipe cap; 3 02. Second fixed plate; 303. First fixed plate; 304. Sixth drive motor; 305. Moving plate; 306. Slurry tank; 307. Material pump; 308. Conveying pipe; 309. First concave plate; 310. Dual-axis motor; 311. Second concave plate; 312. Third detection radar; 313. Telescopic cylinder; 314. Clamping plate; 315. Grouting head; 316. Fourth drive motor; 317. Groove; 318. Fixed housing; 319. Threaded rod; 320. Moving block; 321. Screw hole; 322. Material pipe; 323. Seventh drive motor. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0029] Example 1: A radar detection device for underground powerhouse excavation and support construction, see [link to example]. Figures 1 to 7 The device includes an upper frame 1 and a lower frame 101, which are connected by multiple connecting rods. Multiple mounting frames 2 are provided between the upper frame 1 and the lower frame 101. A first drive motor 206 is installed on the top of the mounting frame 2 and is installed at the bottom of the upper frame 1. A first support frame 209 is installed inside the mounting frame 2. A first detection radar 216 is installed on the side of the first support frame 209 and has a dust reduction component inside for dust reduction during radar detection. A second support frame 202 is connected to the bottom of the first support frame 209 through a second drive motor 217. A fixed housing 318 is installed on the top of the upper frame 1. A groove 317 is opened on the top of the fixed housing 318 and a transmission component is provided inside the groove 317. The transmission component drives the detection component located on the top of the fixed housing 318 to move.

[0030] First, the device is connected to an external control terminal. The control terminal sends control commands to each drive motor, detection radar, solenoid valve 214, water pump 203, and material pump 307, and receives detection data from each detection radar. During radar detection operations, the control terminal controls the first drive motor 206 and the second drive motor 217 to work. The first drive motor 206 drives the mounting frame 2 and the first support frame 209 to rotate, and the second drive motor 217 directly drives the second support frame 202 to rotate relative to the first support frame 209. This allows the device to adjust its support posture and detection position within the underground plant construction area, achieving detection movement within a safe range.

[0031] For details, see Figure 3 and Figure 7 The dust suppression component includes a water pump 203, which is installed inside the mounting frame 2 and has a nozzle 204 connected to its top. A water tank 201 is installed between the upper frame 1 and the lower frame 101, and a second detection radar 205 is installed at the bottom of the lower frame 101. One end of a plurality of solenoid valves 214 is connected to the surface of the water tank 201, and the other end of the plurality of solenoid valves 214 is connected to a connecting pipe head 215. One end of the connecting pipe head 215 is connected to the water pump 203 inside the first support frame 209 through a hose. Both the upper and lower ends of the water tank 201 are connected to one end of a water pipe 212, and the other end of the water pipe 212 is detachably connected to a first pipe cover 213.

[0032] During radar detection, the control terminal controls the solenoid valve 214 and water pump 203 to open based on the dust situation detected by the on-site dust sensor. Water in the water tank 201 is transported through the connecting pipe 215 to the nozzles 204 located in the multiple support legs and sprayed onto the detection area. This process settles the dust generated during the excavation and prevents dust from adhering to the surface of the radar detection end, enabling normal transmission and reception of radar waves and improving the reliability of the detection data.

[0033] Further, see Figure 3 and Figure 6 The second support frame 202 has a third drive motor 207 installed inside. The output shaft at the bottom of the third drive motor 207 is connected to a threaded post 210. A drill bit 211 is fixed at the bottom of the threaded post 210. An internal threaded sleeve 208 is connected to the external thread of the threaded post 210. A support foot is fixed at the bottom of the internal threaded sleeve 208.

[0034] When radar detection indicates the presence of loose rock layers, fissures, or other adverse geological conditions in the surrounding rock ahead, workers can remove one support leg and internal threaded sleeve 208, exposing one of the drill bits 211. Then, the control terminal is used to start the third drive motor 207. The third drive motor 207 drives the threaded column 210 to rotate through the output shaft, and the drill bit 211 at the bottom of the threaded column 210 rotates accordingly, realizing the drilling operation in the target area. After drilling is completed, the control terminal controls the telescopic cylinder 313 to move, so that the clamping plate 314 clamps the grouting head 315, and starts the material pump 307 to transport the grout in the grout tank 306 to the grouting head 315 through the delivery pipe 308, grouting and reinforcing the drilled area, thereby completing the timely support treatment of geological risks.

[0035] It is worth noting that, see Figure 4 The transmission assembly includes a threaded rod 319. One end of the threaded rod 319 passes through a groove 317 and a fixed housing 318, and is connected to the output shaft of a fourth drive motor 316 mounted on the outer side of the fixed housing 318 via a coupling. The other end of the threaded rod 319 is connected to a bearing mounted inside the groove 317. A movable block 320 passes through the outside of the threaded rod 319, and a threaded hole 321 in the movable block 320 is connected to the threaded rod 319.

[0036] The control terminal starts the fourth drive motor 316, which drives the threaded rod 319 to rotate via a coupling. The threaded rod 319 and the moving block 320 form a threaded transmission, causing the moving block 320 to move linearly along the groove 317. This, in turn, drives the detection component located at the top of the fixed housing 318 to perform horizontal translation adjustment.

[0037] It is worth noting that, see Figure 1The detection component includes a fifth drive motor 3, with a movable block 320 connected to the bottom of the fifth drive motor 3. A first fixed plate 303 and a second fixed plate 302 are fixed to both sides of the output shaft at the top of the fifth drive motor 3, respectively. A sixth drive motor 304 is mounted on the side of the first fixed plate 303. The output shaft of the sixth drive motor 304 passes through the first fixed plate 303 and is connected to a rotating rod located between the first fixed plate 303 and the second fixed plate 302 via a coupling. Movable plates 305 are fixed through both ends of the rotating rod. A dual-axis motor 310 is mounted at the end between multiple movable plates 305. The output shafts at both ends of the dual-axis motor 310 pass through the movable plates 305 and are fixed to a first concave plate 309. A seventh drive motor is mounted on the top of the first concave plate 309. 323, the output shaft of the seventh drive motor 323 is connected to the second concave plate 311. Telescopic cylinders 313 are symmetrically installed on the inner wall of the second concave plate 311. The telescopic cylinders 313 are connected to clamping plates 314 through piston rods. Grouting heads 315 are clamped between the clamping plates 314. Multiple third detection radars 312 are symmetrically installed on the outer side of the second concave plate 311. One end of the conveying pipe 308 is connected to the outside of the grouting head 315. The other end of the conveying pipe 308 is connected to a material pump 307. The material pump 307 is installed on the surface of the slurry tank 306 and is used to extract the slurry in the slurry tank 306. The slurry tank 306 is installed between multiple movable plates 305, and both ends of it are connected to one end of a material pipe 322. The other end of the material pipe 322 is detachably connected to a second pipe cover 301.

[0038] After the detection components reach the predetermined position, the control terminal controls the fifth drive motor 3, the sixth drive motor 304, the seventh drive motor 323, and the dual-axis motor 310 to operate. The fifth drive motor 3 drives the first fixed plate 303 and the second fixed plate 302 to rotate as a whole. The sixth drive motor 304 drives the rotating rod to rotate through the coupling, so that the two moving plates 305 on both sides rotate synchronously. The dual-axis motor 310 drives the first concave plate 309 to rotate synchronously through the output shafts at both ends. The seventh drive motor 323 drives the second concave plate 311 to rotate around the connecting shaft. Through multi-stage rotation and angle adjustment, the first detection radar 216, the second detection radar 205, and the third detection radar 312 can perform multi-directional detection of the roof arch, side walls, and bottom plate of the underground plant at different heights, directions, and angles, reducing detection blind spots.

[0039] When using the radar detection device for underground powerhouse excavation and support construction, the device is moved to the underground powerhouse excavation construction area, ensuring that the upper frame 1 and lower frame 101 are stably supported on the construction surface. The device is then connected to the control terminal. The control terminal controls the first drive motor 206 and the second drive motor 217 to adjust the first support frame 209 and the second support frame 202 to the preset support posture. The fourth drive motor 316 is then started, and through the threaded transmission between the threaded rod 319 and the moving block 320, the detection component moves along the groove 317 to the target detection position. The control terminal then controls the fifth drive motor 3, the sixth drive motor 304, the seventh drive motor 323, and the dual-axis motor 310 to operate sequentially, performing overall rotation, lateral rotation, and pitch adjustment of the detection component. The first detection radar 216, the second detection radar 205, and the third detection radar 312 perform multi-directional synchronous detection of different areas of the underground powerhouse. The system detects and transmits the detection data to the control terminal in real time. During radar detection, the control terminal controls the opening of solenoid valve 214 and water pump 203 according to the on-site dust concentration, spraying water mist onto the detection area to settle construction dust and ensure the cleanliness of the radar detection end surface. The control terminal analyzes the received radar detection data. When it determines that there are geological risks such as loose rock layers and fissures in the surrounding rock ahead, it sends a support operation command to the device. The control terminal controls the third drive motor 207 to start, driving the drill bit 211 to complete the drilling operation. Then, it controls the telescopic cylinder 313 to clamp the grouting head 315 and starts the material pump 307 to inject the grout in the grout tank 306 into the borehole through the grouting head 315 to reinforce the risk area. After the support operation is completed, the control terminal controls each drive motor to reset, shuts off the water pump 203 and the material pump 307, and the device can move to the next construction area to repeat the above detection and support process.

[0040] In addition, all components designed in this invention are general standard parts or components known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this invention does not involve improvements to the internal structure and method.

Claims

1. A radar detection device for underground powerhouse excavation and support construction, comprising an upper device frame (1) and a lower device frame (101), wherein the upper device frame (1) and the lower device frame (101) are connected by a plurality of connecting rods, characterized in that, Multiple mounting frames (2) are provided between the upper frame (1) and the lower frame (101) of the device. A first drive motor (206) is installed on the top of the mounting frame (2). The first drive motor (206) is installed at the bottom of the upper frame (1). A first leg frame (209) is installed inside the mounting frame (2). A first detection radar (216) is installed on the side of the first leg frame (209), and a dust-reducing component is provided inside it for dust reduction during radar detection. A second leg frame (202) is connected to the bottom of the first leg frame (209) through a second drive motor (217). A fixed housing (318) is installed on the top of the upper frame (1). A groove (317) is provided on the top of the fixed housing (318). A transmission component is provided inside the groove (317) to drive the detection component located on the top of the fixed housing (318) to move.

2. The radar detection device for underground powerhouse excavation and support construction as described in claim 1, characterized in that, The dust suppression assembly includes a water pump (203), which is installed inside the mounting frame (2) and has a nozzle (204) connected to its top.

3. The radar detection device for underground powerhouse excavation and support construction as described in claim 1, characterized in that, A water tank (201) is installed between the upper frame (1) and the lower frame (101) of the device, and a second detection radar (205) is installed at the bottom of the lower frame (101). One end of a plurality of solenoid valves (214) is connected to the surface of the water tank (201), and the other end of the plurality of solenoid valves (214) is connected to a connecting pipe head (215). One end of the connecting pipe head (215) is connected to the water pump (203) in the first leg frame (209) through a hose.

4. The radar detection device for underground powerhouse excavation and support construction as described in claim 3, characterized in that, The water tank (201) is connected to one end of a water pipe (212) at both the top and bottom, and the other end of the water pipe (212) is detachably connected to a first pipe cover (213).

5. The radar detection device for underground powerhouse excavation and support construction as described in claim 1, characterized in that, The second support leg frame (202) is equipped with a third drive motor (207). The output shaft at the bottom of the third drive motor (207) is connected to a threaded column (210). A drill bit (211) is fixed at the bottom of the threaded column (210). An internal threaded sleeve (208) is connected to the external thread of the threaded column (210). A support foot is fixed at the bottom of the internal threaded sleeve (208).

6. The radar detection device for underground powerhouse excavation and support construction as described in claim 1, characterized in that, The transmission assembly includes a threaded rod (319), one end of which passes through a groove (317) and a fixed housing (318) and is connected to the output shaft of a fourth drive motor (316) mounted on the outer side of the fixed housing (318) via a coupling. The other end of the threaded rod (319) is connected to a bearing mounted inside the groove (317). A movable block (320) passes through the outside of the threaded rod (319), and a threaded hole (321) in the movable block (320) is connected to the threaded rod (319).

7. The radar detection device for underground powerhouse excavation and support construction as described in claim 1, characterized in that, The detection component includes a fifth drive motor (3), the bottom of which is connected to a moving block (320), and the output shaft at the top of the fifth drive motor (3) is fixed with a first fixed plate (303) and a second fixed plate (302) on both sides respectively.

8. The radar detection device for underground powerhouse excavation and support construction as described in claim 7, characterized in that, A sixth drive motor (304) is installed on the side of the first fixed plate (303). The output shaft of the sixth drive motor (304) passes through the first fixed plate (303) and is connected to a rotating rod located between the first fixed plate (303) and the second fixed plate (302) via a coupling. Both ends of the rotating rod are fixed with movable plates (305), and a dual-axis motor (310) is installed at the end between multiple movable plates (305).

9. The radar detection device for underground powerhouse excavation and support construction as described in claim 8, characterized in that, The output shafts at both ends of the dual-axis motor (310) pass through the movable plate (305) and are fixed to the first concave plate (309). The top of the first concave plate (309) is equipped with a seventh drive motor (323). The output shaft of the seventh drive motor (323) is connected to the second concave plate (311). The inner wall of the second concave plate (311) is symmetrically equipped with telescopic cylinders (313). The telescopic cylinders (313) are connected to clamping plates (314) through piston rods. Grouting heads (315) are clamped between the clamping plates (314). Multiple third detection radars (312) are symmetrically installed on the outer side of the second concave plate (311).

10. The radar detection device for underground powerhouse excavation and support construction as described in claim 9, characterized in that, The grouting head (315) is externally connected to one end of a conveying pipe (308), and the other end of the conveying pipe (308) is connected to a material pump (307). The material pump (307) is installed on the surface of the grout tank (306) and is used to extract the grout from the grout tank (306). The grout tank (306) is installed between multiple movable plates (305), and both ends of it are connected to one end of a material pipe (322). The other end of the material pipe (322) is detachably connected to a second pipe cap (301).

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