Multi-layer composite shielding wall
By using a multi-layer composite shielding wall structure, combined with components such as high-strength fiber-reinforced composite panels, radiation-proof coating panels, and sandwich partitions, the problem that single-material shielding walls cannot meet the protection requirements of various types of radiation is solved. This achieves efficient shielding of different types of radiation and enhances the robustness of the wall, while also providing flexible construction and ventilation functions.
Patent Information
- Application Number
- CN202520257281.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-02-18
AI Technical Summary
In existing technologies, shielding walls made of a single material cannot effectively meet the protection needs of multiple types of radiation, resulting in the continued existence of radiation leakage risks. Furthermore, traditional shielding methods suffer from problems such as high cost, inconvenient installation, and long construction periods.
The structure employs a multi-layered composite shielding wall, which includes a high-strength fiber-reinforced composite board on the outside of the concrete wall, a radiation-proof coating board, a sandwich partition, and a radiation-proof material board. Combined with arc-shaped isolation blocks and lead-containing rubber strips, the multi-layered structure absorbs, scatters, and blocks radiation, while the ventilation system enables internal air exchange and ventilation.
It achieves efficient shielding against different types of radiation, reduces the risk of radiation leakage, enhances the robustness and flexibility of the wall, meets the construction needs of complex layouts, and provides effective ventilation and safety warning functions.
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Figure CN223608025U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of building engineering especially relates to a multilayer composite shielding wall. BACKGROUND
[0002] In modern medicine, with the wide application of radiotherapy technology, such as X-ray, CT, gamma knife equipment, radiation protection becomes a crucial problem. Traditional shielding methods mostly use single material to build protective structures, common ones are simple lead plates or concrete walls. However, single material has many limitations, lead plate has good shielding effect, but high cost, toxicity and soft texture, inconvenient to install; concrete wall is heavy, long construction period, poor flexibility, difficult to meet the complex and variable hospital machine room layout requirements. At the same time, for different energy and type of radiation, single material cannot realize all-round high-efficiency shielding, resulting in radiation leakage risk still exists, and an innovative multilayer composite shielding wall is urgently needed to cope with these challenges.
[0003] After searching, the Chinese patent publication No. CN221627341U discloses a hospital anti-radiation wall structure, comprising a original masonry wall, a plurality of wall base materials are adhered to the left end of the original masonry wall, a radiation protection layer is adhered to the left end of the plurality of wall base materials, a protective layer is adhered to the left end of the radiation protection layer, an installation block is fixedly connected to the rear end of the wall base material, a buckle assembly is arranged in the installation block, a sliding groove is formed in the front end of the wall base material, the buckle assembly comprises two installation grooves, the two installation grooves are respectively formed on the upper and lower sides of the interior of the installation block, and the installation groove is fixedly connected with a spring in the interior. In the utility model, the wall base material, the protective layer and other structures are used in cooperation, so that electromagnetic waves and rays can be effectively absorbed and reflected, the radiation intensity is reduced, and the stability and integrity of the wall structure are ensured due to the fixation and adhesion of the layers by the special adhesive. However, in actual use, the structure cannot meet the protection requirements of multiple types of rays, resulting in poor shielding of high-intensity rays. UTILITY MODEL CONTENTS
[0004] In order to make up for the above shortcomings, the utility model provides a multilayer composite shielding wall, aiming at improving the problem that the prior art cannot meet the protection requirements of multiple types of rays.
[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a multilayer composite shielding wall, including concrete wall, the outer wall front side of concrete wall is fixedly connected with high strength fiber reinforced composite board, the outer wall of high strength fiber reinforced composite board is fixedly connected with radiation protection coating board, the inside fixedly connected with a plurality of interlayer baffle of concrete wall, the outer wall fixedly connected with radiation protection material board of the most outside interlayer baffle, the inner wall corner of concrete wall is fixedly connected with arc isolating block, the left and right sides of the outer wall of arc isolating block are all fixedly connected with lead-containing rubber strip, the inner wall left side of concrete wall is provided with exhaust hole, the inner wall front side of concrete wall is provided with square recess, the inner wall of exhaust hole is provided with ventilation mechanism, and the ventilation mechanism is used for the ventilation of wall rear space.
[0006] Through the above technical scheme: when the ray comes to the top of concrete wall, will first pass through the radiation protection coating board, is coated in the active ingredient, absorbs and scatters part of the ray energy, to reduce the ray penetration, subsequently, the ray enters high strength fiber reinforced composite board, further reduces the ability in the ray, simultaneously still enhances the solid ability of entire wall body, part of the ray passes through high strength fiber reinforced composite board, will enter the interlayer baffle in the inside of concrete wall, subsequently is continued to attenuate the ray intensity by the wave-absorbing material in the baffle, finally comes to the top of radiation protection material board, is completely blocked to the ray propagation, for different rays, can add different quantities of interlayer baffle in the inside of concrete wall, simultaneously arc isolating block can reduce the reflection and scattering of radiation at the corner, and lead-containing rubber strip ensures the seamless connection with other protection structure, prevents the ray from leaking from the edge, to increase the attenuation of different ray intensity, thereby satisfies the protection demand of various types of rays.
[0007] Further description of the above technical scheme:
[0008] The ventilation mechanism includes a groove cylinder, the groove cylinder is fixedly connected to the inner wall of the exhaust hole, the inner wall of the groove cylinder is rotatably connected with a groove turntable, the front side of the groove turntable is rotatably connected with a bolt, the front side of the bolt penetrates the groove cylinder and is threadedly connected with a rotating cap, the rear side of the groove cylinder is fixedly connected with a double-layer ventilation duct, the rear side of the double-layer ventilation duct is fixedly connected with an exhaust fan, and the rear side of the exhaust fan is fixedly connected with a louver.
[0009] Through the technical scheme, when ventilation is needed, the exhaust fan is started to generate suction in the double-layer ventilation pipeline, and the rotating cap is rotated to stop the extrusion of the bolt on the recessed disc and the recessed cylinder, and when the air passes through the recessed cylinder and the recessed disc, the air flow is inclined due to the inclined recess on the recessed cylinder, and the recessed disc is rotated, and the air is blown to the top of the louver under the action of the exhaust fan, and the blades at the top of the louver are opened to discharge the air, the recessed disc and the recessed cylinder are extruded to different degrees by controlling the rotating cap to pull the bolt, and the frequency of the air passing through the recessed cylinder and the recessed disc is controlled, so that the ventilation rate can be controlled according to the requirement.
[0010] Further description of the above technical scheme:
[0011] The inner wall of the concrete wall is fixedly connected with a lampshade at the top of the front part, and the inner wall of the lampshade is fixedly connected with an ultraviolet lamp tube.
[0012] Through the above technical scheme, dust can be prevented from gathering above the ultraviolet lamp tube by the lampshade, and the interior can be disinfected and sterilized after use by the ultraviolet lamp tube.
[0013] Further description of the above technical scheme:
[0014] The inner wall of the concrete wall is fixedly connected with an alarm indicator lamp at the top of the left part, and the outer wall of the concrete wall is fixedly connected with a loudspeaker at the top.
[0015] Through the above technical scheme, the alarm indicator lamp can issue an alarm when a fault occurs, and the loudspeaker can transmit to the outside.
[0016] Further description of the above technical scheme:
[0017] The inner wall of the concrete wall is fixedly connected with a fixed disc at the left middle part, and the outer side of the fixed disc is fixedly connected with a radiation warning sign.
[0018] Through the above technical scheme, the fixed disc can provide support for the radiation warning sign, and the radiation warning sign can remind people to pay attention to the radiation area.
[0019] Further description of the above technical scheme:
[0020] The inner wall of the concrete wall is fixedly connected with a radiation monitor at the top of the right part of the front end, and the inner wall of the concrete wall is fixedly connected with a intercom at the right part of the front.
[0021] Through the above technical scheme, the radiation monitor can monitor the internal radiation condition, and the intercom can facilitate communication with medical staff outside.
[0022] As a further description of the above technical solutions:
[0023] The inner wall front side bottom of the concrete wall is provided with a safety warning sign light board, the top and left and right sides of the safety indication sign light board are fixedly connected with L-shaped fixing blocks, and the safety indication sign light board is fixedly connected with the inner wall front bottom side of the concrete wall through the L-shaped fixing blocks.
[0024] Through the above technical solutions: through the safety indication sign light board, people can be guided to escape safely when power failure occurs, and through the L-shaped fixing blocks, the safety indication sign light board can be fixed above the concrete wall.
[0025] As a further description of the above technical solutions:
[0026] The inner wall middle part of the square notch is fixedly connected with an isolation observation window, and the outer wall front and back sides of the isolation observation window are fixedly connected with sealing strips.
[0027] Through the above technical solutions: through the isolation observation window, medical staff can observe outside, and through the sealing strips, the air-tightness of the isolation observation window can be improved.
[0028] The utility model has the following beneficial effects:
[0029] 1、 in the utility model, after part of energy is absorbed and scattered by the radiation protection coating plate, the ray enters the high-strength fiber reinforced composite board, further weakens the ray and enhances the wall strength, the remaining ray is attenuated by the wave-absorbing material in the interlayer partition plate, and is completely blocked at the radiation protection material plate, by adjusting the number of interlayer partition plates in the concrete wall, the arc isolation block reduces the reflection and scattering of radiation at the corner, and the lead-containing rubber strip prevents the leakage of radiation from the edge, so that different radiation protection requirements can be met.
[0030] 2、 in the utility model, by starting the exhaust fan to generate suction, the rotating cap can release the bolt, the extrusion of the groove rotating disc and the groove cylinder is stopped, air enters the groove cylinder and the groove rotating disc through the inclined notch, the inclined airflow drives the groove rotating disc to rotate, the exhaust fan blows the louver blade to open, air is discharged, by adjusting the rotating cap and the bolt, the extrusion degree of the groove rotating disc and the groove cylinder is controlled, the air flow frequency is adjusted, and the control of the ventilation rate is realized. BRIEF DESCRIPTION OF DRAWINGS
[0031] Figure 1 A structure display drawing of the multi-layer composite shielding wall is provided for the utility model;
[0032] Figure 2 A local schematic view of the isolation observation window of the multi-layer composite shielding wall is provided for the utility model;
[0033] Figure 3A kind of isolation observation window structure schematic diagram of multilayer composite shielding wall is proposed for the utility model.
[0034] Figure 4 A kind of concrete wall sectional view of multilayer composite shielding wall is proposed for the utility model.
[0035] Figure 5 A kind of ventilation mechanism split view of multilayer composite shielding wall is proposed for the utility model.
[0036] Legend:
[0037] 1, concrete wall;2, ventilation mechanism;201, recessed cylinder;202, recessed rotary disc;203, bolt;204, rotating cap;205, double-layer ventilation duct;206, exhaust fan;207, louver;3, radiation-proof coating board;4, high-strength fiber reinforced composite board;5, interlayer partition;6, radiation-proof material board;7, arc isolating block;8, lead-containing rubber strip;9, exhaust hole;10, square notch;11, lampshade;12, ultraviolet lamp;13, alarm indicator light;14, fixed disc;15, radiation warning sign;16, radiation monitor;17, intercom;18, safety indicator light board;19, L-shaped fixing block;20, isolation observation window;21, sealing strip;22, loudspeaker. DETAILED DESCRIPTION
[0038] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0039] Reference Figure 1 , Figure 2 and Figure 4The utility model provides a kind of embodiment: a kind of multilayer composite shielding wall, the outer wall front side of concrete wall 1 is fixedly connected with high-strength fiber reinforced composite board 4, high-strength fiber reinforced composite board 4, then further reduce the ability in the X-ray, simultaneously also enhance the solid ability of whole wall, the outer wall of high-strength fiber reinforced composite board 4 is fixedly connected with radiation protection coating plate 3, the active ingredient of coating in radiation protection coating plate 3, absorb and scatter part X-ray energy, the inside of concrete wall 1 is fixedly connected with multiple interlayer baffle 5, wave-absorbing material in interlayer baffle 5 continues to attenuate X-ray intensity, the outer wall of outermost interlayer baffle 5 is fixedly connected with radiation protection material plate 6, radiation protection material plate 6 completely blocks X-ray propagation, the inner wall corner of concrete wall 1 is fixedly connected with arc isolating block 7, arc isolating block 7 can reduce the reflection and scattering of radiation at corner, the left and right sides of the outer wall of arc isolating block 7 are fixedly connected with lead-containing rubber strip 8, lead-containing rubber strip 8 ensures seamless connection with other protective structures, prevent X-ray from edge leakage, the inner wall front left side of concrete wall 1 is provided with exhaust hole 9, exhaust hole 9 is convenient for ventilation, the inner wall front side of concrete wall 1 is provided with square recess 10, square recess 10 can place isolation observation window 20, the inner wall of exhaust hole 9 is provided with ventilation mechanism 2, and ventilation mechanism 2 is used to ventilate the space behind wall;
[0040] Specifically, when X-ray comes to the top of concrete wall 1, it will first pass through radiation protection coating plate 3, and the active ingredient in the coating will absorb and scatter part of the X-ray energy to reduce the penetration of X-rays. Subsequently, the X-rays enter the high-strength fiber reinforced composite board 4, which further reduces the ability of the X-rays and enhances the overall strength of the wall. After part of the X-rays pass through the high-strength fiber reinforced composite board 4, they will enter the interlayer baffle 5 inside the concrete wall 1, and then be attenuated by the wave-absorbing material in the baffle. Finally, they come to the top of the radiation protection material plate 6, which completely blocks the propagation of X-rays. For different X-rays, different numbers of interlayer baffles 5 can be added inside the concrete wall 1. At the same time, the arc isolating block 7 can reduce the reflection and scattering of radiation at the corner, and the lead-containing rubber strip 8 ensures seamless connection with other protective structures, preventing X-rays from leaking from the edge. This increases the attenuation of different X-ray intensities, thereby meeting the needs of various types of X-ray protection.
[0041] Reference Figure 2 , Figure 3 and Figure 5, the ventilation mechanism 2 comprises a grooved cylinder 201 fixedly connected to the front side of the inner wall of the exhaust hole 9, the inner wall of the grooved cylinder 201 is rotationally connected with a grooved turntable 202, the front side of the grooved turntable 202 is rotationally connected with a bolt 203, the front side of the bolt 203 penetrates through the grooved cylinder 201 and is threadedly connected with a rotating cap 204, rotating the rotating cap 204 so that the bolt 203 no longer pulls the extrusion of the grooved turntable 202 and the grooved cylinder 201, when the air passes through the grooved cylinder 201 and the grooved turntable 202, due to the inclined notches above the grooved cylinder 201, the incoming air flow is inclined, thereby pushing the grooved turntable 202 to rotate, the rear side of the grooved cylinder 201 is fixedly connected with a double-layer ventilation duct 205, the rear side of the double-layer ventilation duct 205 is fixedly connected with an exhaust fan 206, starting the exhaust fan 206 so as to generate suction in the double-layer ventilation duct 205, the rear side of the exhaust fan 206 is fixedly connected with a louver 207;
[0042] Specifically, when ventilation is needed, the exhaust fan 206 is started at this time, thereby generating suction in the double-layer ventilation duct 205, and the rotating cap 204 is rotated, so that the bolt 203 no longer pulls the extrusion of the grooved turntable 202 and the grooved cylinder 201, when the air passes through the grooved cylinder 201 and the grooved turntable 202, due to the inclined notches above the grooved cylinder 201, the incoming air flow is inclined, thereby pushing the grooved turntable 202 to rotate, and the incoming air is blown above the louver 207 under the action of the exhaust fan 206, thereby making the blades above the louver 207 rotate and open, allowing the air to be discharged, by controlling the rotating cap 204 to pull the bolt 203, the extrusion degree of the grooved turntable 202 and the grooved cylinder 201 is different, thereby controlling the frequency of air passing through the grooved cylinder 201 and the grooved turntable 202, so that the ventilation rate can be controlled according to the needs.
[0043] Referring to Figure 1 , Figure 2 and Figure 3 , the inner wall of the front top of the concrete wall 1 is fixedly connected with a lampshade 11, the inner wall of the lampshade 11 is fixedly connected with an ultraviolet lamp tube 12, the lampshade 11 can prevent dust from accumulating above the ultraviolet lamp tube 12, and the ultraviolet lamp tube 12 can be used to disinfect and sterilize the interior after use; the inner wall of the left top of the concrete wall 1 is fixedly connected with an alarm indicator 13, the top of the outer wall of the concrete wall 1 is fixedly connected with a loudspeaker 22, the alarm indicator 13 can issue an alarm when a fault occurs, and the alarm can be transmitted to the outside through the loudspeaker 22; the inner wall of the left side of the concrete wall 1 is fixedly connected with a fixed disc 14, the outer side of the fixed disc 14 is fixedly connected with a radiation warning sign 15, the fixed disc 14 can provide support for the radiation warning sign 15, and the radiation warning sign 15 can remind people to pay attention to entering the radiation area;
[0044] Specifically, the lampshade 11 can prevent dust from gathering above the ultraviolet lamp 12, the ultraviolet lamp 12 can sterilize the interior after use, the alarm indicator light 13 can issue an alarm when a fault occurs and transmit the alarm to the outside world through the loudspeaker 22, the fixing disc 14 can provide support for the radiation warning sign 15, and the radiation warning sign 15 can remind people to pay attention to entering the radiation area.
[0045] With reference to Figure 1 , Figure 2 and Figure 3 , the radiation monitor 16 is fixedly connected to the top side of the right part of the front end of the inner wall of the concrete wall 1, the intercom 17 is fixedly connected to the right side of the front part of the inner wall of the concrete wall 1, the radiation monitor 16 monitors the internal radiation condition and can facilitate communication with medical staff outside through the intercom 17, the safety warning sign light board 18 is arranged at the bottom of the front side of the inner wall of the concrete wall 1, the L-shaped fixing blocks 19 are fixedly connected to the top and bottom sides of the safety warning sign light board 18, the safety warning sign light board 18 is fixedly connected to the bottom side of the front part of the inner wall of the concrete wall 1 through the L-shaped fixing blocks 19, the safety warning sign light board 18 can guide people to escape safely when a power failure occurs, and the safety warning sign light board 18 can be fixed above the concrete wall 1 through the L-shaped fixing blocks 19, the isolation observation window 20 is fixedly connected to the middle of the inner wall of the square notch 10, the sealing strips 21 are fixedly connected to the front and back sides of the outer wall of the isolation observation window 20, and the isolation observation window 20 can facilitate observation by medical staff outside and improve the sealing capacity of the isolation observation window 20 through the sealing strips 21.
[0046] Specifically, the radiation monitor 16 monitors the internal radiation condition, the intercom 17 can facilitate communication with medical staff outside, the safety warning sign light board 18 can guide people to escape safely when a power failure occurs, the safety warning sign light board 18 can be fixed above the concrete wall 1 through the L-shaped fixing blocks 19, and the isolation observation window 20 can facilitate observation by medical staff outside and improve the sealing capacity of the isolation observation window 20 through the sealing strips 21.
[0047] Working principle: when the rays reach the top of the concrete wall 1, first penetrate the anti-radiation coating plate 3, the active ingredients in the coating will absorb and scatter part of the ray energy, thereby reducing the penetration of the rays, then the rays enter the high-strength fiber reinforced composite plate 4, further reduce the energy in the rays, which can also enhance the overall solidity of the wall, part of the rays through the high-strength fiber reinforced composite plate 4, will enter the interlayer partition plate 5 inside the concrete wall 1, continue to attenuate the intensity of the rays by the wave-absorbing material in the partition plate, finally, the rays reach the top of the anti-radiation material plate 6, and are completely blocked from propagating, for different types of rays, different numbers of interlayer partition plates 5 can be added inside the concrete wall 1 to enhance the attenuation effect of different ray intensities, in addition, the circular arc isolation block 7 can reduce the reflection and scattering of radiation at the corner, and the lead-containing rubber strip 8 ensures seamless connection with other protective structures, preventing the leakage of rays from the edge, thereby meeting the needs of multiple types of radiation protection, and through the ventilation mechanism 2, when internal ventilation is needed, start the exhaust fan 206 to form a suction force in the double-layer ventilation duct 205, at the same time, the rotation of the rotating cap 204 will release the pressure of the bolt 203 between the recessed disc 202 and the recessed cylinder 201, when the air passes through the recessed cylinder 201 and the recessed disc 202, due to the inclined notch on the top of the recessed cylinder 201, the airflow will be inclined, thereby promoting the rotation of the recessed disc 202, under the action of the exhaust fan 206, the air is blown to the top of the louver 207, causing the blades above the louver 207 to rotate and open to allow air to escape, by adjusting the rotating cap 204 to pull the bolt 203, the degree of extrusion between the recessed disc 202 and the recessed cylinder 201 can be changed, thereby controlling the frequency of air passing through the recessed cylinder 201 and the recessed disc 202, to achieve precise control of the ventilation rate.
[0048] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.
Claims
1. A multi-layer composite shielding wall comprising a concrete wall (1), characterized in that: The outer wall of the concrete wall (1) is fixedly connected with a high-strength fiber reinforced composite board (4), the outer wall of the high-strength fiber reinforced composite board (4) is fixedly connected with a radiation-proof coating board (3), the inside of the concrete wall (1) is fixedly connected with a plurality of sandwich partitions (5), the outer wall of the outermost sandwich partition (5) is fixedly connected with a radiation-proof material board (6), the inner wall corner of the concrete wall (1) is fixedly connected with a circular arc isolation block (7), the left and right sides of the outer wall of the circular arc isolation block (7) are fixedly connected with a lead-containing rubber strip (8), the inner wall front left side of the concrete wall (1) is provided with an exhaust hole (9), the inner wall front side of the concrete wall (1) is provided with a square notch (10), the inner wall of the exhaust hole (9) is provided with a ventilation mechanism (2), and the ventilation mechanism (2) is used for ventilation of the space behind the wall.
2. A multi-layer composite shielding wall according to claim 1, wherein: The ventilation mechanism (2) comprises a groove cylinder (201), the groove cylinder (201) is fixedly connected to the inner wall front side of the exhaust hole (9), the inner wall of the groove cylinder (201) is rotatably connected with a groove turntable (202), the front side of the groove turntable (202) is rotatably connected with a bolt (203), the front side of the bolt (203) penetrates the groove cylinder (201) and is threadedly connected with a rotating cap (204), the rear side of the groove cylinder (201) is fixedly connected with a double-layer ventilation pipeline (205), the rear side of the double-layer ventilation pipeline (205) is fixedly connected with an exhaust fan (206), and the rear side of the exhaust fan (206) is fixedly connected with a louver (207).
3. The multi-layer composite shielding wall of claim 1, wherein: The inner wall front top side of the concrete wall (1) is fixedly connected with a lampshade (11), and the inner wall of the lampshade (11) is fixedly connected with a ultraviolet lamp tube (12).
4. The multi-layer composite shielding wall of claim 1, wherein: The inner wall left top side of the concrete wall (1) is fixedly connected with an alarm indicator light (13), and the outer wall top of the concrete wall (1) is fixedly connected with a loudspeaker (22).
5. The multi-layer composite shielding wall of claim 1, wherein: The inner wall left middle side of the concrete wall (1) is fixedly connected with a fixed disc (14), and the outer side of the fixed disc (14) is fixedly connected with a radiation warning sign (15).
6. The multi-layer composite shielding wall of claim 1, wherein: The inner wall front end right top side of the concrete wall (1) is fixedly connected with a radiation monitor (16), and the inner wall front right side of the concrete wall (1) is fixedly connected with a intercom (17).
7. The multi-layer composite shielding wall of claim 1, wherein: The inner wall front bottom of the concrete wall (1) is provided with a safety warning sign light board (18), the top left and right sides of the safety warning sign light board (18) are fixedly connected with an L-shaped fixed block (19), and the safety warning sign light board (18) is fixedly connected with the inner wall front bottom of the concrete wall (1) through the L-shaped fixed block (19).
8. The multi-layer composite shielding wall of claim 1, wherein: The inner wall middle part of the square notch (10) is fixedly connected with an isolation observation window (20), and the outer wall front and back sides of the isolation observation window (20) are fixedly connected with a sealing strip (21).