A rapid installation device for monitoring external soil pressure of shield segments and an application method thereof

Abstract

The present invention proposes a rapid installation device and application method for monitoring the soil pressure outside the shield segment, in the field of shield tunnel safety monitoring. It includes the following connected in sequence: a monitoring component, the action end of which extends out of the shield segment and abuts against the outer soil layer; a positioning component, which is connected to the monitoring component, and a grouting hole is left between the positioning component and the monitoring component; a connecting part, which is detachably connected to the end of the positioning component away from the monitoring component; a grouting part, which is detachably connected to the end of the connecting part away from the positioning component; by pushing the sensor to the outer soil contact surface after the shield segment is installed, the sensor is evenly stressed and truly contacts the outer soil contact surface, and concrete is introduced through the grouting part to fill the cavity reserved for the embedded sensor, so that the soil pressure sensor monitoring component can monitor the pressure of the outer soil on the segment structure. The installation process of the entire device is simple, the construction speed is fast, the efficiency is high, and the original structure is not damaged, and the monitoring data is true and reliable.

Description

Technical Field

[0001] The invention relates to the field of shield tunnel safety monitoring, and in particular to a shield segment external earth pressure monitoring quick installation device and an application method. Background Art

[0002] During underground excavation of shield tunnels, the original structural properties of the complex and changeable rock mass change, which may cause the soil pressure on the outside of the shield segments to squeeze the assembled shield segment structure. When the squeezing pressure reaches the bearing capacity of the shield segments, the segment structure is damaged, resulting in failure of the shield tail seal, uneven floating deformation of the tunnel, and displacement of the previously constructed tunnel segments caused by subsequent shield excavation, resulting in various adverse consequences such as water gushing, sand gushing, water leakage, slurry leakage, and water seepage.

[0003] The traditional outer soil pressure of shield segments has the following problems during implementation:

[0004] It can only be installed when the segments are prefabricated and fixed on the outside of the segments. After the segments are spliced, grouting will be performed to directly cast the soil monitoring sensor into the concrete. However, this method may cause damage or impact to the monitoring sensor, resulting in the monitoring sensor not being able to work properly or the monitoring data being inaccurate.

[0005] During the pre-installation of shield segments, it is necessary to monitor the outer soil pressure and install the monitoring sensors in a way that neither damages the segment structure nor affects the monitoring effect of the sensors.

[0006] Therefore, how to design a quick installation device and application method for monitoring the external earth pressure of shield segments is an urgent problem we need to solve. Summary of the invention

[0007] The purpose of the present invention is to provide a shield segment external earth pressure monitoring rapid installation device and application method, so as to solve the problems existing in the above-mentioned background technology.

[0008] The embodiment of the present invention is achieved as follows:

[0009] On the one hand, an embodiment of the present application provides a quick installation device for monitoring the external earth pressure of a shield segment, which includes:

[0010] Monitoring component, the active end of which extends out of the shield segment and abuts against the outer soil layer;

[0011] A positioning component is connected to the monitoring component, and a grouting hole is left between the positioning component and the monitoring component;

[0012] A connecting portion, detachably connected to an end of the positioning assembly facing away from the monitoring assembly;

[0013] A grouting portion, detachably connected to an end of the connecting portion away from the positioning assembly;

[0014] The interiors of the positioning component, the connecting part and the grouting part all pass through the rear grouting channel, and when the monitoring component, the positioning component, the connecting part and the grouting part are connected in sequence, their grouting channels are connected and can be discharged to the outside through the grouting hole.

[0015] In some embodiments of the present invention, the monitoring assembly comprises a soil pressure sensor and a mounting plate connected to each other; the mounting plate abuts against the mounting end surface of the soil pressure sensor and has the same shape and size.

[0016] In some embodiments of the present invention, the positioning assembly comprises a positioning column, the positioning column is perpendicular to the end surface of the mounting plate, and the center of the positioning column coincides with the center of the mounting plate;

[0017] The positioning column is connected to one end of the mounting plate through a plurality of triangular reinforcing steel sheets; the plurality of triangular reinforcing steel sheets are evenly distributed along the circumferential direction of the mounting plate, and gaps are left between adjacent triangular reinforcing steel sheets; the positioning column is perpendicular to the end face of the mounting plate, and a gap is left between the positioning column and the mounting plate to form the above-mentioned grouting hole.

[0018] In some embodiments of the present invention, the connecting portion is sleeved with the positioning column, and the inner wall of the connecting portion abuts against the outer wall of the positioning column;

[0019] The outer wall of the positioning column is provided with a limiting portion for abutting against the port of the connecting portion;

[0020] The outer wall of the connecting portion is also provided with an annular water-stopping steel plate.

[0021] In some embodiments of the present invention, one end of the grouting portion is detachably connected to an end of the connecting portion away from the positioning column;

[0022] The outer wall of the grouting part is provided with an external thread, and the inner wall of the positioning column is provided with an internal thread matching the external thread; the end of the grouting part away from the positioning column is also provided with a grouting connection thread.

[0023] In some embodiments of the present invention, a plurality of auxiliary steel columns are provided at one end of the grouting part close to the grouting connection thread, and the plurality of auxiliary steel columns are evenly distributed in the opposite direction along the circumference of the grouting part.

[0024] On the other hand, an embodiment of the present application provides an application method of a shield segment external earth pressure monitoring rapid installation device, which is applied to any of the above-mentioned external earth pressure monitoring rapid installation devices, and comprises the following steps:

[0025] Apply concrete release agent to the outer wall of the acting end of the monitoring component, and seal the grouting holes with flexible materials;

[0026] Connect the monitoring component, the positioning component and the connecting part in sequence, fill the inside of the conveying channel with a fluid medium, and after the conveying channel is filled with the fluid medium, seal the other port of the connecting part;

[0027] Install the assembled structure at the designated monitoring point of the shield segment, put the output cable of the monitoring component into the reserved cable box, and fill the cable box with a fluid medium;

[0028] After the shield segment and the assembled structure are safely in place in the tunnel, test the monitoring component through the output cable of the monitoring component;

[0029] Tap or push the connecting part to demold the acting end of the monitoring component, and discharge the fluid medium in the conveying channel from the port;

[0030] Connect the grouting part to the connecting part, and connect the other end of the grouting part to the concrete grouting part;

[0031] Connect the output cable of the monitoring component to the reading instrument, rotate and push the grouting part to move the acting end of the monitoring component towards the contact surface of the soil body after tunneling until the monitoring value of the reading instrument changes and reaches the measured value range permitted by the installation specification of the monitoring component;

[0032] Inject concrete into the grouting channel through the concrete grouting part until the cavity left after the monitoring component is pushed out is filled.

[0033] In some embodiments of the present invention, in the steps of filling the inside of the conveying channel with a fluid medium and filling the cable box with a fluid medium, the fluid medium is fine sand.

[0034] In some embodiments of the present invention, in the step of sealing the grouting holes with flexible materials, the flexible material is foam.

[0035] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0036] The structure of the present invention is simple, quick to install, easy to operate, reduces damage to the segment structure, has little impact on the on-site installation conditions, and is quick to install;

[0037] The structure of the present invention is simple, quick to install, easy to operate. Through the grouting part arranged with threaded expansion, the force-bearing surface of the sensor truly and uniformly contacts the soil body outside the tunneling face, and the monitoring data is true and effective;

[0038] The structure of the present invention is simple, the installation is fast, and the operation is convenient, so as to realize the monitoring of the soil pressure on the outer side of the shield segment, and provide an evaluation and decision-making basis for whether the shield segment structure is safe during the construction period of the shield tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0040] Figure 1 It is a schematic structural diagram of the overall rapid installation device in the embodiment of the present invention;

[0041] Figure 2 It is a schematic structural diagram of the monitoring component in the embodiment of the present invention;

[0042] Figure 3 It is a schematic structural diagram of the monitoring component from another angle in the embodiment of the present invention;

[0043] Figure 4 It is a schematic structural diagram of the connecting part in the embodiment of the present invention;

[0044] Figure 5 It is a schematic structural diagram of the grouting part in the embodiment of the present invention;

[0045] Figure 6 For Figure 1 The enlarged view at A in

[0046] Figure 7 It is a schematic diagram when the rapid installation device in the embodiment of the present invention is applied.

[0047] Reference numerals: 1, connecting part; 2, grouting part; 3, grouting channel; 4, grouting hole; 5, soil pressure sensor; 6, installation flat plate; 7, positioning column; 8, triangular reinforcing steel sheet; 9, limiting part; 10, water stop steel plate; 11, external thread; 12, internal thread; 13, auxiliary steel column. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0049] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0050] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0051] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of the invention is usually placed during use. This is only for the convenience of describing the present invention and simplifying the description, 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 should not be construed as a limitation of the present invention.

[0052] In addition, if terms such as "horizontal", "vertical", "hanging" are used, it does not mean that the component is required to be absolutely horizontal or hanging, but it can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined.

[0053] In the description of the embodiments of the present invention, "a plurality of" represents at least two.

[0054] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "coupled" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] Embodiment 1

[0056] Please refer to Figures 1 - 7 , Figure 1 which shows a schematic structural diagram of the overall quick installation device in the embodiment of the present invention;

[0057] Figure 2 which shows a schematic structural diagram of the monitoring component in the embodiment of the present invention;

[0058] Figure 3 Shown is a structural schematic diagram of a monitoring component from another angle in an embodiment of the present invention;

[0059] Figure 4 The figure shows a schematic diagram of the structure of the connecting portion 1 in an embodiment of the present invention;

[0060] Figure 5 The figure shows a schematic diagram of the structure of the grouting part 2 in an embodiment of the present invention;

[0061] Figure 6 Shown Figure 1 The enlarged view of point A in the middle;

[0062] Figure 7 Shown is a schematic diagram of the application of the rapid installation device in an embodiment of the present invention.

[0063] On the one hand, an embodiment of the present application provides a quick installation device for monitoring the external earth pressure of a shield segment, which includes:

[0064] Monitoring component, the active end of which extends out of the shield segment and abuts against the outer soil layer;

[0065] A positioning component is connected to the monitoring component, and a grouting hole 4 is left between the positioning component and the monitoring component;

[0066] A connecting portion 1, detachably connected to an end of the positioning component away from the monitoring component;

[0067] The grouting part 2 is detachably connected to the end of the connecting part 1 away from the positioning assembly;

[0068] The interiors of the positioning component, the connecting part 1 and the grouting part 2 all penetrate the rear grouting channel 3, and when the monitoring component, the positioning component, the connecting part 1 and the grouting part 2 are connected in sequence, the grouting channels 3 are connected and can be discharged to the outside through the grouting hole 4.

[0069] In this embodiment, the monitoring assembly comprises a soil pressure sensor 5 and a mounting plate 6 which are connected to each other; the mounting plate 6 abuts against the mounting end surface of the soil pressure sensor 5 and has the same shape and size.

[0070] like Figure 2 as well as Figure 3 As shown, the mounting plate 6 and the soil pressure sensor 5 of the same size and shape can achieve the purpose of fully supporting the soil pressure sensor 5, and the force-bearing end of the soil pressure sensor 5 can completely abut the outer soil layer, and the pressure of the outer soil layer will not be directly applied to the mounting plate 6, so that the detection data is more real and effective.

[0071] In this embodiment, the mounting plate 6 is also made of a 4 mm thick steel plate.

[0072] In this embodiment, the positioning assembly includes a positioning column 7 , the positioning column 7 is perpendicular to the end surface of the mounting plate 6 , and the center of the positioning column 7 coincides with the center of the mounting plate 6 .

[0073] The positioning column 7 is connected to one end of the mounting plate 6 through a plurality of triangular reinforcing steel sheets 8; the plurality of triangular reinforcing steel sheets 8 are evenly distributed along the circumferential direction of the mounting plate 6, and a gap is left between adjacent triangular reinforcing steel sheets 8; the positioning column 7 is perpendicular to the end surface of the mounting plate 6, and a gap is left between the positioning column 7 and the mounting plate 6 to form the above-mentioned grouting hole 4. In this embodiment, 8 triangular reinforcing steel sheets 8 are used, and the 8 triangular reinforcing steel sheets 8 are evenly welded at an angle of 45° at the outer side of the end with a larger outer diameter of the positioning column 7. When welding, the top end of the positioning column 7 is welded at a right angle of 6 mm from the triangular reinforcing steel sheet 8, forming a staggered groove, which is the grouting hole 4 in the later stage.

[0074] Then weld the triangular reinforcement steel sheet 8 to the mounting plate 6, ensuring that the center of the positioning column 7 is consistent with the center of the mounting plate 6, and a 6mm gap is left between the positioning column 7 and the mounting plate 6, and the triangular reinforcement steel sheet 8 does not extend beyond the steel plate. The triangular reinforcement steel sheet 8 is made of a 3mm thick steel plate with a U-shaped folded edge, processed into a triangle-like shape, which is used to strengthen the strength of the steel plate on the mounting plate 6, so that the sensor is more evenly stressed.

[0075] The structures of the positioning column 7, the connecting part 1 and the grouting part 2 are in the form of steel pipes, such as Figure 1 As shown, the monitoring assembly, the positioning column 7, the connecting portion 1 and the grouting portion 2 are connected in sequence, and the positioning column 7 and the connecting portion 1 are mutually sleeved, as shown in FIG. Figure 6 As shown, the positioning column 7 is restricted from further extending into the connecting portion 1 by a limiting portion 9 therebetween.

[0076] In this embodiment, the connecting portion 1 is sleeved with the positioning column 7, and the inner wall of the connecting portion 1 abuts against the outer wall of the positioning column 7;

[0077] The outer wall of the positioning column 7 is provided with a limiting portion 9 for abutting against the port of the connecting portion 1;

[0078] The outer wall of the connecting portion 1 is also provided with an annular water-stopping steel plate 10. Figure 1 and Figure 7 As shown, in order to prevent the positioning column 7 from sliding or leaking in the pipe segment and to increase the force on the locator, a circular steel plate with a thickness of 4 mm and a ring width of 50 mm is fully welded to the outside of the connecting part 1 as a fixing and water-stopping steel plate, namely the water-stopping steel plate 10.

[0079] In this embodiment, one end of the grouting portion 2 is detachably connected to an end of the connecting portion 1 away from the positioning column 7;

[0080] The outer wall of the grouting part 2 is provided with an external thread 11, and the inner wall of the positioning column 7 is provided with an internal thread 12 that mates with the external thread 11; one end of the grouting part 2 facing away from the positioning column 7 is also provided with a grouting connection thread.

[0081] In this embodiment, several auxiliary steel columns 13 are provided at one end of the grouting part 2 close to the grouting connection thread, and the several auxiliary steel columns 13 are evenly distributed along the circumferential direction of the grouting part 2.

[0082] Embodiment 2

[0083] Please refer to Figures 1 - 7 , Figure 1 shown in the schematic structural diagram of the overall quick installation device in the embodiment of the present invention;

[0084] Figure 2 shown in the schematic structural diagram of the monitoring component in the embodiment of the present invention;

[0085] Figure 3 shown in the schematic structural diagram of the monitoring component from another angle in the embodiment of the present invention;

[0086] Figure 4 shown in the schematic structural diagram of the connecting part 1 in the embodiment of the present invention;

[0087] Figure 5 shown in the schematic structural diagram of the grouting part 2 in the embodiment of the present invention;

[0088] Figure 6 Shown as Figure 1 the enlarged view of A in;

[0089] Figure 7 shown in the schematic diagram when the quick installation device in the embodiment of the present invention is applied.

[0090] On the other hand, the embodiment of the present application provides an application method of a quick installation device for monitoring the external soil pressure of a shield segment, which is applied to any one of the above-mentioned external soil pressure monitoring quick installation devices, and includes the following steps:

[0091] S1. Apply concrete release agent to the outer wall of the acting end of the monitoring component, and seal the grouting hole 4 with a flexible material; and the soil pressure sensor 5 can be bonded between the installation plates 6, as Figure 1 shown.

[0092] S2. Connect the monitoring component, the positioning component, and the connecting part 1 in sequence, fill the inside of the conveying channel with a fluid medium, and after the conveying channel is filled with the fluid medium, block the other port of the connecting part 1; that is, assemble the device in sequence, insert the sensor and the mounting plate 6 that have been bonded together into the connecting part 1 through the positioning post 7, then fill the steel pipes of the mounting plate 6, the connecting part 1, and the positioning post 7 with fine sand, and block the other end of the connecting part 1 with a plug to prevent the leakage of cement mortar during the installation and pouring of the segment.

[0093] It should be noted that the overall installation can be carried out before pouring the shield segment, or it can be installed together with the shield segment after the shield segment is poured, that is, installed on the inner wall of the tunnel.

[0094] S3. Install the assembled structure at the designated monitoring point of the shield segment, put the output cable of the monitoring component into the reserved cable box, and fill the cable box with a fluid medium; that is, tie the cable of the sensor along the precast segment steel bars, reserve 200 mm long sensor cable in the cable box, and then fill and seal it with fine sand to prevent the leakage of cement mortar during pouring.

[0095] S4. After the shield segment and the assembled structure are safely transported to the designated position in the tunnel, test the monitoring component through the output cable of the monitoring component.

[0096] S5. Tap or push the connecting part 1 to demold the acting end of the monitoring component and discharge the fluid medium in the conveying channel from the port; that is, pull out the cable of the cable box, remove the sand in the positioning post 7 and the connecting part 1, tap with a metal rod inside the steel pipe to demold the mounting plate 6 of the sensor, that is, make it loose. And regularly test the sensor during the maintenance of the shield segment.

[0097] When installing the detection device before pouring the shield segment, it is also necessary to pass a steel wire rope through the metal ring of the sensor mounting plate 6 to fix the mounting plate 6 with the sensor on the shield segment to prevent the mounting plate 6 of the sensor from falling off during the transportation and splicing of the shield segment; in this way, after the shield segment is spliced, it is necessary to pull out the fixing wire, connect the grouting part 2 to the connecting part 1, and rotate it into the steel pipe of the positioning post 7, that is, into the connecting part 1, and connect the concrete grouting part 2 to the other end of the grouting part 2 to prevent external water from flowing in after the sensor mounting plate 6 is rotated and pushed open.

[0098] S6. Connect the grouting part 2 to the connecting part 1 and connect the other end of the grouting part 2 to the concrete grouting part 2.

[0099] S7. Connect the output cable of the monitoring component to the reading instrument. Rotate and push the grouting part 2 to move the acting end of the monitoring component towards the contact surface of the soil after tunneling until the monitoring value of the reading instrument changes and reaches the measured value range permitted by the installation specification of the monitoring component. When pushing the grouting part 2, it is to make the detection end of the sensor truly contact the outer soil layer. And through the above steps, the whole device has been demolded and can be pushed. When the sensor can monitor the real outer soil layer pressure, it is fixed by subsequent grouting, so as to improve the detection accuracy, make the detected data true and effective, and provide the basis for evaluating and making decisions on whether the shield segment structure is safe during the shield tunnel construction period.

[0100] S8. Inject concrete into the grouting channel 3 through the concrete grouting part 2 until the cavity left after the monitoring component is pushed out is filled. That is, start the concrete grouting pump and grout inward along the grouting part 2 until the cavity left after the sensor installation plate 6 is pushed out is filled.

[0101] In this embodiment, in the steps of filling the fluid medium inside the conveying channel and filling the fluid medium in the cable box, the fluid medium is fine sand.

[0102] In this embodiment, in the step of sealing the grouting hole 4 with a flexible material, the flexible material is foam.

[0103] Of course, it should be noted that in order to enable the grouting part 2 to be threadedly connected to the connecting part 1, the connecting part 1 needs to extend out of the other side of the shield segment after installation, as Figure 7 shown.

[0104] For those skilled in the art, it is obvious that this application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of this application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of this application is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in this application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A rapid installation device for monitoring the external soil pressure of a shield segment, characterized in that, Includes the following connected in sequence: Monitoring component, the active end of which extends out of the shield segment and abuts against the outer soil layer; A positioning component is connected to the monitoring component, and a grouting hole is left between the positioning component and the monitoring component; A connecting portion, detachably connected to an end of the positioning assembly facing away from the monitoring assembly; A grouting portion, detachably connected to an end of the connecting portion away from the positioning assembly; The interiors of the positioning component, the connecting part and the grouting part all penetrate the rear grouting channel, and when the monitoring component, the positioning component, the connecting part and the grouting part are connected in sequence, the grouting channels thereof are connected and can be discharged to the outside through the grouting hole; The monitoring assembly comprises a soil pressure sensor and a mounting plate connected to each other; the mounting plate abuts against the mounting end surface of the soil pressure sensor and has the same shape and size; The positioning assembly includes a positioning column, the positioning column is perpendicular to the end surface of the mounting plate, and the center of the positioning column coincides with the center of the mounting plate; The positioning column is connected to one end of the mounting plate through a plurality of triangular reinforcing steel sheets; the plurality of triangular reinforcing steel sheets are evenly distributed along the circumferential direction of the mounting plate, and gaps are left between adjacent triangular reinforcing steel sheets; the positioning column is perpendicular to the end surface of the mounting plate, and a gap is left between the positioning column and the mounting plate to form the above-mentioned grouting hole; One end of the grouting part is detachably connected to an end of the connecting part away from the positioning column; The outer wall of the grouting part is provided with an external thread, and the inner wall of the positioning column is provided with an internal thread matching the external thread; the end of the grouting part away from the positioning column is also provided with a grouting connection thread.

2. The rapid installation device for monitoring the external soil pressure of a shield segment according to claim 1, wherein The connecting portion is sleeved with the positioning column, and the inner wall of the connecting portion abuts against the outer wall of the positioning column; The outer wall of the positioning column is provided with a limiting portion for abutting against the port of the connecting portion; The outer wall of the connecting portion is also provided with an annular water-stopping steel plate.

3. The rapid installation device for monitoring the external soil pressure of a shield segment according to claim 2, characterized in that, A plurality of auxiliary steel columns are arranged at one end of the grouting part close to the grouting connection thread, and the plurality of auxiliary steel columns are evenly distributed in the reverse direction along the circumference of the grouting part.

4. A method for applying a rapid installation device for monitoring external soil pressure of a shield segment, which is applied to the rapid installation device for monitoring external soil pressure described in claim 3, characterized in that, The following steps are involved: Apply concrete release agent to the outer wall of the active end of the monitoring component and seal the grouting hole with a flexible material; The monitoring component, the positioning component and the connecting part are connected in sequence, and the fluid medium is filled in the conveying channel. After the conveying channel is filled with the fluid medium, the other port of the connecting part is blocked; Install the assembled structure to the designated monitoring point of the shield segment, place the output cable of the monitoring component into the reserved cable box, and fill the cable box with fluid medium; After the shield segments and assembled structure are safely at the designated location in the tunnel, the monitoring components are tested through their output cables; Knock or push the connection part to demould the active end of the monitoring component and discharge the fluid medium in the conveying channel from the port; Connect the grouting part to the connecting part, and connect the other end of the grouting part to the concrete grouting part; Connect the output cable of the monitoring component to the reading instrument, rotate and push the grouting part to move the action end of the monitoring component toward the contact surface of the excavated soil, until the monitoring value of the reading instrument changes and reaches the measurement value range permitted by the monitoring component installation specification; Inject concrete into the grouting channel through the concrete grouting part until the cavity left after the monitoring component is pushed out is filled up.

5. The application method of a rapid installation device for monitoring the external soil pressure of a shield segment according to claim 4, characterized in that In the steps of filling the fluid medium inside the conveying channel and filling the fluid medium in the cable box, the fluid medium is fine sand.

6. The application method of a rapid installation device for monitoring the external soil pressure of a shield segment according to claim 5, characterized in that In the step of sealing the grouting hole with a flexible material, the flexible material is foam.

Images