Convergence monitoring system for deep cover transverse egg-shaped deformation operation tunnel

Abstract

The present application provides a deep soil covering transverse duck egg shape deformation operation tunnel convergence monitoring system, including a ring steel sheet system, a reinforced concrete net rack, a pipe piece, a flat stretching telescopic arm system, an anchor rod connecting system, a frog type support leg, a lateral support hydraulic cylinder, a hydraulic connecting system, a grouting system and a workbench. The reinforced concrete net rack is laid on the peripheral direction of each pipe piece in advance when the pipe piece is prefabricated. The high pressure composite cement slurry of the grouting system fills the gap between the outer wall of the tunnel pipe piece after flat pulling and the soil layer, realizing the ability of stretching the pipe piece inside the tunnel and pushing the pipe piece outside by high pressure grouting to control the convergence deformation. The device has the advantages of convenient operation, reliable performance, strong adaptability, high construction efficiency, low cost and digital monitoring control of tunnel deformation. It has important guiding significance for the engineering quality control, repair period control and operation safety control of the operation tunnel.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of convergence deformation control of deep overburden operating tunnel in soft soil area, and particularly relates to a convergence monitoring system for deep overburden transversely-duck-egg-shaped deformation operating tunnel. BACKGROUND

[0002] In recent years, with the rapid development of urban rail transit operation mileage in China, people's dependence on the subway for daily travel is getting higher and higher. How to ensure the safety of the operating subway in different strata is an important issue. Especially in the Yangtze River Delta region integration development of Shanghai, Hangzhou, Nanjing and other major cities, the stratum is mainly deep soft soil. When the operating subway passes through deep soft soil stratum, due to the gravity of deep overburden above the subway and the dynamic disturbance of surrounding engineering construction, the operating subway tunnel will deform, and the main evolution form is that the round tunnel gradually becomes a transversely-duck-egg-shaped tunnel. This kind of deformation is the main form of tunnel disease, which is easy to induce tunnel water leakage and affect the safety of subway operation. At present, the main treatment methods for the transversely-duck-egg-shaped deformation of the operating tunnel are grouting reinforcement and steel ring reinforcement. The effect of grouting reinforcement for treating tunnel deformation is poor, and the grouting pressure and grouting amount are difficult to control; steel ring reinforcement needs to consume a large amount of steel, and the treatment cost is high, and the steel belt and the pipe piece are easy to separate. However, there are few studies on the treatment of long-distance transversely-duck-egg-shaped deformation of the subway operating tunnel in deep soft soil area, especially the method of considering the transversely-duck-egg-shaped deformation in the operation period from the construction period of the subway tunnel. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the convergence monitoring system for deep overburden transversely-duck-egg-shaped deformation operating tunnel is provided, which implements the control concept of tunnel convergence deformation from the construction period to the operation period, overcomes the problem that the long-distance shield tunnel convergence deformation is difficult to control due to uneven settlement of deep soil layer, and effectively avoids the shortcomings of the existing reinforcement equipment and method. The application has the characteristics of controllable flat pull size, controllable flat displacement, convenient ring steel sheet assembly construction, reliable grouting performance, flexible equipment movement and digital control of tunnel deformation.

[0004] TECHNICAL SCHEME

[0005] The utility model provides a kind of convergence monitoring system for deep cover soil transverse duck egg shape deformation operation tunnel, including annular steel sheet system, reinforced concrete net rack 2, segment 3, flat stretchable arm system 4, anchor rod connecting system 7, frog type support leg 8, lateral support hydraulic cylinder 11, hydraulic connection system, grouting system, workbench 17, when prefabricated segment 3, reinforced concrete net rack 2 is laid in the circumferential periphery of each segment 3 in advance, when grouting construction operation, high-pressure composite cement slurry of grouting system fills in the gap between the outer wall of tunnel segment 3 after flat pulling and soil layer 18, realizes the ability of pulling segment 3 inside tunnel and pushing segment 3 outside high pressure grouting to control convergence deformation, i.e.

[0006] The annular steel sheet system includes annular steel sheet 101, sealing water stop rubber 102, and the annular steel sheet 101 is installed on the surface of the reinforced concrete net rack 2 through the sealing water stop rubber 102. The main function of the annular steel sheet 101 is to increase the stress area, uniformly disperse the force and balance the stress concentration, so as to facilitate uniform wrapping of the segment 3 in deformation control. The sealing water stop rubber 102 is filled between the annular steel sheet 101 and the reinforced concrete net rack 2, and between the reinforced concrete net rack 2 and the segment 3, mainly playing the roles of filling, stabilizing and water stopping.

[0007] In the prefabrication of the segment 3, the reinforced concrete net rack 2 is laid in the circumferential periphery of each segment 3 in advance. The main function is to prevent the structure of the segment 3 from being damaged and broken during deformation control operation.

[0008] The flat stretchable arm system 4 has two groups, which are respectively located on the left and right sides of the hydraulic connection system.

[0009] The flat stretchable arm system 4 includes a connecting steel fork 402, a hydraulic fixing plate 403, a positioning rod 404, a hydraulic telescopic rod 405, a positioning bolt 406 and a check ring 409.

[0010] The connecting steel fork 402 is a steel claw structure, which is welded with the hydraulic telescopic rod 405. The end of the connecting steel fork 402 is provided with four holes for connecting with the anchor rod connecting system 7.

[0011] The hydraulic fixing plate 403 has three pieces, which are respectively located at the upper part, the middle part and the lower part. The hydraulic fixing plates 403 distributed in the upper part and the middle part play the role of stabilizing the structure. The lower hydraulic fixing plate 403 is welded with the hydraulic connection system to play the role of fixing. The hydraulic fixing plate 403 is provided with a circular hole in the middle for the hydraulic telescopic rod 405 to pass through.

[0012] The positioning rod 404 has four pieces. The upper part of the positioning rod 404 is connected with the hydraulic fixing plate 403 through the positioning bolt 406.

[0013] The upper part of the hydraulic telescopic rod 405 is connected with the connecting steel fork 402, and the lower part is connected with the hydraulic connection system, and the flat pulling action is performed under the action of the hydraulic connection system.

[0014] The retaining ring 409 is arranged on the wall of the circular hole reserved in the middle of the hydraulic fixing plate 403, which can avoid friction damage when the hydraulic telescopic rod 405 is subjected to eccentric load.

[0015] The anchor rod connection system 7 comprises a grouting anchor rod 701, a threaded bolt 702 and a tray base 703.

[0016] The grouting anchor rod 701 is connected with the tray base 703; the grouting anchor rod 701 comprises a through channel in the hollow interior, which is used for transmitting the high-pressure composite cement slurry 1506 of the grouting system.

[0017] The threaded bolt 702 is connected with the tray base 703 through the end part; during operation, the threaded bolt 702 is connected with the tray base 703 by penetrating the reserved hole in the end part of the connecting steel fork 402 of the flat pulling telescopic arm system 4.

[0018] The tray base 703 is screwed with the grouting anchor rod 701 through the reserved internal thread; the surface of the tray base 703 is also provided with a circular buckle type interface, which can conveniently connect the radial grouting pipe 1505 of the grouting system.

[0019] The frog type support leg 8 is provided with four, one side of which is welded with the lateral support hydraulic cylinder 11; the other side of the lateral support hydraulic cylinder 11 is hingedly connected with the system shell 1309 of the hydraulic connection system; the frog type support leg 8 can adjust the balanced state of force through telescopic displacement, so as to meet the safety and stability during heavy load operation; the rectangular pad plate 9 and the quick release type stabilizing screw 19 are also arranged below each frog type support leg 8, which are used for increasing the support area and the anti-overturning capacity.

[0020] The lateral support hydraulic cylinder 11 is provided with four, and the main purpose is to change the length of the boom by controlling the displacement of the hydraulic cylinder, so as to obtain the required amplitude of the on-site construction operation.

[0021] The hydraulic connection system comprises a servo oil source 1301, a servo oil source operation panel 1302, hydraulic oil 1303, a hydraulic pipeline 1304, an oil cylinder 1305, a wireless stress strain sensor 1306, a hydraulic rod push plate 1307, a dynamic stress strain acquisition instrument 1308, and a system shell 1309. The servo oil source 1301 is arranged above the workbench 17. The main function of the servo oil source 1301 is to pump, control and distribute the hydraulic oil 1303. The hydraulic oil 1303 is pumped to the oil cylinder 1305 through the hydraulic pipeline 1304 to provide a high-pressure and stable power source. The servo oil source operation panel 1302 is connected to the servo oil source 1301. The main function of the servo oil source operation panel 1302 is to control the hydraulic loading value of the oil cylinder 1305 by controlling the hydraulic oil 1303 pumped by the servo oil source 1301. The oil cylinder 1305 is arranged in the system shell 1309 and comprises two left-right symmetrical movable chambers. The wireless stress strain sensor 1306 and the hydraulic rod push plate 1307 are arranged in the upper end of the oil cylinder 1305 in a left-right symmetrical manner. The upper end of the hydraulic rod push plate 1307 is welded to the lower end of the hydraulic telescopic rod 405 of the flat telescopic arm system 4. The hydraulic rod push plate 1307 is controlled to move horizontally by controlling the hydraulic oil 1303 pumped by the servo oil source 1301, thereby driving the hydraulic telescopic rod 405 of the flat telescopic arm system 4 to move horizontally. The wireless stress strain sensor 1306 is connected to the dynamic stress strain acquisition instrument 1308 through a wireless digital signal to monitor the stress state. The dynamic stress strain acquisition instrument 1308 is arranged on the left side of the system shell 1309.

[0022] The grouting system comprises a drag pump pipe 1501, a stirring drum 1502, a pump hopper 1503, a high-pressure grouting steel pipe 1504, a radial grouting pipe 1505, high-pressure composite cement grout 1506, a grouting electric control box 1507, and a grouting electric control box operation panel 1508.

[0023] The drag pump pipe 1501 is connected to the front end of the high-pressure grouting steel pipe 1504 and the rear end of the pump hopper 1503. The main function of the drag pump pipe 1501 is to transport the high-pressure composite cement grout 1506 in the pump hopper 1503.

[0024] The stirring drum 1502 is arranged on the upper part of the workbench 17. The main function of the stirring drum 1502 is to uniformly stir the high-pressure composite cement grout 1506.

[0025] The pump hopper 1503 is arranged above the workbench 17. The main function of the pump hopper 1503 is to provide a high-pressure grouting power source for the high-pressure composite cement grout 1506.

[0026] The discharge port of the stirring drum 1502 is arranged above the pump hopper 1503. Under the interaction of gravity and stirring power, the high-pressure composite cement grout 1506 in the stirring drum 1502 can be directly input into the hopper of the pump hopper 1503.

[0027] High-pressure grouting steel pipe 1504 is arranged at the top of the hydraulic connection system, and one is arranged on the left side and the right side, and a total of two are connected with the radial grouting pipe 1505, the other end of the radial grouting pipe 1505 is connected with the tray base 703 of the anchor rod connection system 7, and the purpose is to transport high-pressure composite cement slurry 1506 through the high-pressure grouting steel pipe 1504;

[0028] Radial grouting pipe 1505 is arranged on both sides of the flat telescopic arm system 4, one is arranged on the left side and the right side, and a total of two are arranged, which are installed during grouting construction and recovered after grouting is completed, and the purpose is to transport high-pressure composite cement slurry 1506;

[0029] Grouting electric control box 1507 is arranged above the workbench 17 and is used for regulating and controlling the pump hopper 1503 and the stirring drum 1502.

[0030] Grouting electric control box operation panel 1508 is used for controlling the work of the grouting electric control box 1507, and displaying operation state, grouting parameter data and the like through the interface.

[0031] The annular steel sheet 101 is arranged on the left side and the right side of each ring of the tunnel, and the two end faces need to be aligned and the arrangement height needs to be consistent.

[0032] The wheel system 10 can also be provided; specifically, the wheel system 10 is arranged below the system shell 1309 of the hydraulic connection system and the workbench 17 and can be pushed and moved, which is convenient for on-site operation construction.

[0033] The traction steel cable 16 can also be provided, and the purpose is to pull the system shell 1309 and the workbench 17.

[0034] The device has the advantages of convenient operation, reliable performance, strong adaptability, high construction efficiency and low cost, and also has the advantages of digital monitoring and control of tunnel deformation, and has important guiding significance for engineering quality control, repair construction period control and operation safety control of the operating tunnel. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a front view of the deep soil covering transverse duck egg-shaped deformation operating tunnel convergence monitoring system in a non-working state.

[0036] Figure 2 It is a front view of the deep soil covering transverse duck egg-shaped deformation operating tunnel convergence monitoring system in a working completed state.

[0037] Figure 3 It is a detailed view of the annular steel sheet system.

[0038] Figure 4 It is a detailed view of the anchor rod connection system.

[0039] Figure 5 Figure 1 is a side view of the device shown in Figure 1 (tunnel is cross-sectional view); Figure 1

[0040] Figure 6 Figure 1 is a side view of the device shown in Figure 1 (tunnel is cross-sectional view); Figure 2 Figure 1 is a side view of the device shown in Figure 1 (tunnel is cross-sectional view);

[0041] Figure 7 Figure 1 is a side view of the device shown in Figure 1 (tunnel is cross-sectional view); Figure 5 Figure 1 is a side view of the device shown in Figure 1 (tunnel is cross-sectional view);

[0042] Figure 8 Figure 1 is a side view of the device shown in Figure 1 (tunnel is cross-sectional view); Figure 7 Figure 1 is a side view of the device shown in Figure 1 (tunnel is cross-sectional view);

[0043] Figure 9 Figure 1 is a side view of the device shown in Figure 1 (tunnel is cross-sectional view); Figure 8 Figure 1 is a side view of the device shown in Figure 1 (tunnel is cross-sectional view);

[0044] Figure 10 Figure 1 is a side view of the device shown in Figure 1 (tunnel is cross-sectional view).

[0045] Figure 1 is a side view of the device shown in Figure 1 (tunnel is cross-sectional view).

[0046] 101 is a ring-shaped steel sheet, 102 is a sealing water stop rubber,

[0047] 2 is a reinforced concrete net rack,

[0048] 3 is a pipe segment,

[0049] 4 is a flat telescopic arm system, 402 is a connecting steel fork, 403 is a hydraulic fixing plate, 404 is a positioning rod, 405 is a hydraulic telescopic rod, 406 is a positioning bolt, and 409 is a check ring,

[0050] 7 is an anchor rod connecting system, 701 is a grouting anchor rod, 702 is a threaded bolt, and 703 is a tray base,

[0051] 8 is a frog type support leg,

[0052] 9 is a rectangular pad plate,

[0053] 10 is a wheel train,

[0054] 11 is a lateral support hydraulic cylinder,

[0055] 1301 is a servo oil source, 1302 is a servo oil source operation panel, 1303 is hydraulic oil, 1304 is a hydraulic pipeline, 1305 is an oil cylinder, 1306 is a wireless stress and strain sensor, 1307 is a hydraulic rod push plate, 1308 is a dynamic stress and strain acquisition instrument, and 1309 is a system shell, ​

[0056] 1501 is a drag pump pipe, 1502 is a stirring barrel, 1503 is a pump hopper, 1504 is a high-pressure grouting steel pipe, 1505 is a radial grouting pipe, 1506 is a high-pressure composite cement slurry, 1507 is a grouting electric control box, 1508 is a grouting electric control box operation panel,

[0057] 16 is a traction steel cable,

[0058] 17 is a workbench,

[0059] 18 is a soil layer,

[0060] 19 is a quick-release stabilizing screw,

[0061] 20 is a road surface. DETAILED DESCRIPTION

[0062] The technical solutions provided by the present application will be further described below in combination with specific embodiments and their accompanying drawings. The advantages and features of the present application will be more apparent in combination with the following description.

[0063] It should be noted that the embodiments of the present application have better implementation, and are not any form of limitation of the present application. The technical features described in the embodiments of the present application or the combination of technical features should not be considered as isolated, and they can be combined with each other to achieve better technical effects. The scope of the preferred embodiments of the present application can also include other implementations, and this should be understood by those skilled in the art to which the embodiments of the present application belong.

[0064] The technology, methods and devices known to those skilled in the related art can not be discussed in detail, but in appropriate cases, the technology, methods and devices should be considered as part of the authorized description. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values.

[0065] The drawings of the present application are very simplified and use non-precise proportions, only to facilitate and clarify the purpose of assisting the description of the embodiments of the present application, and are not a limitation of the implementation of the present application. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects that can be produced by the present application and the purposes that can be achieved, should fall within the scope of the technical content disclosed by the present application. The same reference numerals appearing in the drawings of the present application represent the same features or parts, which can be applied to different embodiments.

[0066] EMBODIMENT

[0067] As shown in the drawings, Figures 1-10

[0068] ​The utility model provides a kind of convergence monitoring system for deep cover soil transverse egg-shaped deformation operation tunnel, including annular steel sheet system, reinforced concrete net rack 2, segment 3, flat stretchable arm system 4, anchor rod connecting system 7, frog type support leg 8, rectangular backing plate 9, wheel system 10, lateral support hydraulic cylinder 11, hydraulic connection system, grouting system, traction steel cable 16, workbench 17, soil layer 18, quick-release type stabilizing screw 19, road surface 20.

[0069] Wherein:

[0070] Annular steel sheet system includes annular steel sheet 101, sealing waterstop rubber 102.

[0071] Annular steel sheet 101 is steel arc-shaped steel sheet, and a hole is reserved in each piece, and the length, thickness and width of each piece are consistent.Among them, annular steel sheet 101 is installed on the surface of reinforced concrete net rack 2 through sealing waterstop rubber 102, and one piece of annular steel sheet 101 is arranged on the left and right sides of each ring of the tunnel, and the end faces of the two pieces need to be aligned, and the arrangement height needs to be consistent on the left and right sides.

[0072] Each annular steel sheet 101 is laid on the outer surface of reinforced concrete net rack 2 on the horizontal two sides of each ring of the tunnel through sealing waterstop rubber 102.The main function of annular steel sheet 101 is to increase the stress area, uniformly disperse the force and balance the stress concentration, and also facilitate uniform gripping of segment 3 in deformation control.

[0073] Sealing waterstop rubber 102 is butadiene styrene thermoplastic rubber, which has excellent properties of rubber and plastic, good toughness, adhesion, low temperature resistance, and its main function is to fill between annular steel sheet 101 and reinforced concrete net rack 2, reinforced concrete net rack 2 and segment 3, mainly to fill, stabilize and stop water.

[0074] Reinforced concrete net rack 2 is laid on the periphery of each segment 3 in advance when prefabricating segment 3.The main function is to prevent damage and rupture of segment 3 structure during deformation control operation.

[0075] Segment 3 is the main component of shield tunnel.Segment 3 is assembled to form shield tunnel, and six segments 3 are assembled in each cross section of each ring of the tunnel.

[0076] Flat stretchable arm system 4 includes connecting steel fork 402, hydraulic fixing plate 403, positioning rod 404, hydraulic telescopic rod 405, positioning bolt 406 and check ring 409.

[0077] In the embodiment, flat stretchable arm system 4 has two groups, which are respectively located on the left and right sides of hydraulic connection system.

[0078] The connecting steel fork 402 is a steel claw-shaped structure connected with the hydraulic telescopic rod 405 by welding, and the end is provided with four holes. During operation, the threaded pin 702 of the anchor rod connecting system 7 is connected with the tray base 703 of the anchor rod connecting system 7 by penetrating the reserved holes.

[0079] The hydraulic fixing plate 403 is a square plate made of a whole cast steel piece, has high rigidity and strength, and is provided with three pieces in each group of flat pull telescopic arm system 4, which are located at the upper, middle and lower parts, and have the same length, width and thickness. Four circular holes are reserved at the four corners, and one circular hole is reserved in the middle. The diameter of the hole in the middle is larger than that of the hole at the four corners. The upper and lower hole positions of the three hydraulic fixing plates 403 are consistent in the vertical direction. The hydraulic fixing plates 403 distributed in the upper and middle parts play a role in stabilizing the structure, and the lower hydraulic fixing plate 403 is connected with the hydraulic connecting system by welding and plays a fixing role.

[0080] The positioning rod 404 is a steel cylinder, and four are provided in each group of flat pull telescopic arm system 4. The upper part of the positioning rod 404 is provided with a preformed thread, which can penetrate the circular holes reserved at the four corners of the hydraulic fixing plate 403, and is connected with the hydraulic fixing plate 403 by a positioning bolt 406.

[0081] The hydraulic telescopic rod 405 is connected with the connecting steel fork 402 at the top and connected with the hydraulic rod push plate 1307 at the bottom. The hydraulic rod push plate 1307 drives the hydraulic telescopic rod 405 to perform a flat pull action under the action of the hydraulic pressure.

[0082] The positioning bolt 406 is a cylindrical fastener with threads inside, mainly playing a fastening role.

[0083] The retaining ring 409 is located on the wall of the circular hole reserved in the middle of the hydraulic fixing plate 403. When the outer wall of the hydraulic telescopic rod 405 slides along the retaining ring 409, the retaining ring 409 can prevent the hydraulic telescopic rod 405 from being damaged by friction when it is subjected to eccentric load.

[0084] The anchor rod connecting system 7 includes a grouting anchor rod 701, a threaded pin 702 and a tray base 703.

[0085] The grouting anchor rod 701 is a manganese steel cylindrical structure, and the end is provided with external threads. The high-pressure composite cement slurry 1506 is transmitted through the hollow through channel in the inside.

[0086] The threaded pin 702 is a steel cylinder, and the end is provided with external threads. The threaded pin 702 is connected with the tray base 703 by rotating and tightening the external threads at the end with the internal threads on the left and right sides of the tray base 703. During operation, the threaded pin 702 is connected with the tray base 703 by penetrating the reserved holes of the connecting steel fork 402 of the flat pull telescopic arm system 4.

[0087] The tray base 703 is connected to the grouting anchor rod 701 by screwing the reserved internal thread, and the threaded bolt 702 is connected to the tray base 703 on the left and right sides by screwing the reserved internal thread, and the tray base 703 is further provided with a circular buckle type interface, which can be conveniently connected with the radial grouting pipe 1505.

[0088] The frog type support leg 8 is provided with four, one side of which is welded to the lateral support hydraulic cylinder 11, and the other side is hingedly connected to the system shell 1309. The frog type support leg 8 can adjust the balanced state of the force through telescopic displacement, so as to meet the safety and stability in heavy load operation.

[0089] The rectangular pad plate 9 is provided with four, each of which is connected below the frog type support leg 8, and four hole positions are reserved around the rectangular pad plate 9. The main function of the rectangular pad plate 9 is to increase the support area and reduce the damage to the road 20, and further enhance the stability and anti-overturning force of the system.

[0090] The wheel system 10 is arranged below the system shell 1309 of the hydraulic connection system and the workbench 17 and is hingedly connected through a bearing. The driving force is mainly artificial pushing, which is convenient for on-site operation construction.

[0091] The lateral support hydraulic cylinder 11 is provided with four, and the main purpose is to change the length of the boom through hydraulic control displacement telescoping to obtain the required amplitude of the on-site construction operation.

[0092] The hydraulic connection system includes a servo oil source 1301, a servo oil source operation panel 1302, hydraulic oil 1303, a hydraulic pipeline 1304, an oil cylinder 1305, a wireless stress and strain sensor 1306, a hydraulic rod push plate 1307, a dynamic stress and strain acquisition instrument 1308, and a system shell 1309.

[0093] The servo oil source 1301 is arranged above the workbench 17. The main function of the servo oil source 1301 is to pump, control and distribute the pumped hydraulic oil 1303. The pumped hydraulic oil 1303 is supplied to the oil cylinder 1305 through the hydraulic pipeline 1304 to provide a high-pressure and stable power source.

[0094] The servo oil source operation panel 1302 is arranged at the upper end of the servo oil source 1301 and is connected by wires. The main function is to control the servo oil source 1301 to pump the hydraulic oil 1303 to control the size of the hydraulic loading value of the oil cylinder 1305.

[0095] The oil cylinder 1305 is arranged inside the system shell 1309 and is a two left-right symmetrical movable chamber.

[0096] Wireless stress strain sensor 1306 and hydraulic rod push plate 1307 are arranged in the upper end of the oil cylinder 1305, which is symmetrical on both sides; the upper end of the hydraulic rod push plate 1307 is welded and connected with the hydraulic telescopic rod 405, and the hydraulic oil 1303 is pumped through the control of the servo oil source 1301 to control the hydraulic rod push plate 1307 in the oil cylinder 1305 to move up and down; the wireless stress strain sensor 1306 is connected with the dynamic stress strain collector 1308 through wireless digital signal, and the main purpose is to analyze the stress and strain of the wireless stress strain sensor 1306 in the two movable chambers in real time, and monitor the stress state; the dynamic stress strain collector 1308 is arranged on the left side of the system shell 1309.

[0097] The system shell 1309 is made of steel.

[0098] The grouting system comprises a drag pump pipe 1501, a stirring drum 1502, a pump hopper 1503, a high-pressure grouting steel pipe 1504, a radial grouting pipe 1505, a high-pressure composite cement slurry 1506, a grouting electric control box 1507 and a grouting electric control box operation panel 1508.

[0099] The drag pump pipe 1501 is connected with the high-pressure grouting steel pipe 1504 at the front end and connected with the pump hopper 1503 at the rear end, and mainly bears the high-pressure composite cement slurry 1506 in the pump hopper 1503.

[0100] The stirring drum 1502 is arranged on the upper part of the workbench 17, and mainly uniformly stirs the high-pressure composite cement slurry 1506.

[0101] The pump hopper 1503 is arranged above the workbench 17, and mainly provides a high-pressure grouting power source for the high-pressure composite cement slurry 1506.

[0102] The discharge port of the stirring drum 1502 is arranged above the pump hopper 1503, and under the interaction of gravity and stirring power, the high-pressure composite cement slurry 1506 in the stirring drum 1502 can be directly input into the hopper of the pump hopper 1503.

[0103] The high-pressure grouting steel pipe 1504 is arranged on the top of the hydraulic connection system, and one is arranged on each of the left and right sides, and there are two in total, and a circular grouting port is arranged in the middle. The circular grouting port is connected with the radial grouting pipe 1505, and the other end of the radial grouting pipe 1505 is connected with the tray base 703, and the purpose is to transport the high-pressure composite cement slurry 1506.

[0104] The radial grouting pipe 1505 is arranged on both sides of the flat pull telescopic arm system 4, and one is arranged on each side, and there are two in total, which are installed during grouting construction and recovered after grouting is completed, and the purpose is to transport the high-pressure composite cement slurry 1506.

[0105] During the grouting operation, the high-pressure composite cement slurry 1506 fills the gap between the outer wall of the tunnel segment 3 after being pulled flat and the soil layer 18, realizing the ability to control the convergence deformation by pulling the segment 3 inside the tunnel and pushing the segment 3 outside by high-pressure grouting, that is, realizing the more efficient deformation control mode of "pulling inside and pushing outside" and "from point to surface".

[0106] The grouting electric control box 1507 is arranged above the workbench 17, and mainly controls the pump hopper 1503 and the stirring drum 1502 through wires.

[0107] The grouting electric control box operation panel 1508 mainly controls the grouting electric control box 1507 through wires, and displays the running state, grouting parameter inquiry and other data through the interface.

[0108] The traction steel cable 16 is used to pull the system shell 1309 and the workbench 17. In the embodiment, quick-release type stabilizing screws 19 are used, which are cylindrical threaded fasteners with nuts. They are used to enhance the overturning resistance of the device during operation.

[0109] The road surface 20 is a road surface for the temporary movement of the wheel system 10, which is laid in the shield tunnel.

[0110] Compared with the prior art, the embodiment of the present application has the following advantages and beneficial effects:

[0111] 1. The present application has the characteristics of quantitatively controlling the "horizontal egg" deformation during the tunnel construction period and the operation period.

[0112] 1.1 Before the tunnel construction, the annular steel sheet system, the reinforced concrete net rack 2 and the anchor rod connecting system 7 need to be pre-set on the outer wall of the shield segment 3. The annular steel sheet system includes an annular steel sheet 101 and a sealing water stop rubber 102. The anchor rod connecting system 7 includes a grouting anchor rod 701, a threaded bolt 702 and a tray base 703.

[0113] 1.2 During the manufacture of the segment 3, the reinforced concrete net rack 2 needs to be laid on the circumferential periphery of each segment 3 through the sealing water stop rubber 102. In addition, the segments 3 located on the left and right sides of the horizontal should also be installed with an annular steel sheet 101 on the surface of the reinforced concrete net rack 2 through the sealing water stop rubber 102, thereby forming an annular steel sheet system-reinforced concrete net rack 2-segment 3 composite structure. Among them, the annular steel sheets 101 on the left and right sides of each ring of the tunnel need to keep the end faces aligned and the left and right layout heights consistent, so that during the flat pulling operation, the force is uniformly dispersed "from point to surface", the hydraulic loading stress concentration problem is balanced, the segment 3 is uniformly gripped, the adverse effects such as joint cracking and misalignment during the operation are avoided, and the overall uniformity of the controlled tunnel longitudinal line is ensured.

[0114] 1.3 Before the tunnel construction, the anchor rod connecting system 7, i.e. the grouting anchor rod 701, the threaded bolt 702 and the tray base 703, is installed in advance in the annular steel sheet system-reinforced concrete net rack 2-tunnel segment 3 composite structure along the longitudinal direction of the tunnel, the grouting anchor rod 701 is penetrated into the reserved hole in the annular steel sheet system-reinforced concrete net rack 2-tunnel segment 3 composite structure, the lower end of the grouting anchor rod 701 is screwed with the reserved internal thread of the tray base 703, and finally the threaded bolt 702 is screwed into the reserved threaded port on both sides of the tray base 703, further preparing for the subsequent deformation control operation.

[0115] 2. The hydraulic connection system has the characteristics of digital monitoring of the tunnel deformation control amount and the mechanical response of the device.

[0116] 2.1 The hydraulic connection system comprises a servo oil source 1301, a servo oil source operation panel 1302, hydraulic oil 1303, a hydraulic pipeline 1304, an oil cylinder 1305, a wireless stress-strain sensor 1306, a hydraulic rod push plate 1307, a dynamic stress-strain acquisition instrument 1308 and a system shell 1309.

[0117] 2.1.1 During hydraulic loading, the servo oil source 1301 in the hydraulic connection system controls the hydraulic operation by pumping the hydraulic oil 1303 to the oil cylinder 1305, the internal hydraulic rod push plate 1307 bears the hydraulic pressure, and drives the hydraulic telescopic rod 405 to move up and down, so that the flat pull telescopic arm system 4 performs a flat pull action, and the tunnel is restored to a normal circular shape from a "horizontal duck egg" shape.

[0118] 2.1.2 The stress and strain values of the hydraulic rod push plate 1307 in the oil cylinder 1305 are monitored by the wireless stress-strain sensor 1306, and then the flat pull hydraulic pressure and the deformation control displacement amount during device operation are analyzed by the dynamic stress-strain acquisition instrument 1308. During deformation control, the device has the characteristics of controllable hydraulic pressure and controllable deformation control displacement, realizes the ability of digital monitoring, and improves the intelligent digital level of the machine.

[0119] 3. The grouting system has the characteristics of high-pressure grouting for the gap part on the horizontal two sides of the tunnel after deformation control.

[0120] 3.1 The grouting system comprises a drag pump pipe 1501, a stirring barrel 1502, a pump hopper 1503, a high-pressure grouting steel pipe 1504, a radial grouting pipe 1505, a high-pressure composite cement slurry 1506, a grouting electric control box 1507 and a grouting electric control box operation panel 1508.

[0121] 3.1.1 After the tunnel deformation control is performed, the grouting electric control box 1507 controls the pump hopper 1503 and the stirring drum 1502 through wires, the stirring drum 1502 uniformly stirs the high-pressure composite cement slurry 1506 and inputs it into the pump hopper 1503, and then the high-pressure composite cement slurry 1506 is sequentially pumped into the gap between the left and right sides of the tunnel through the drag pump pipe 1501, the high-pressure grouting steel pipe 1504, the radial grouting pipe 1505, and the grouting anchor rod 701. By filling the high-pressure composite cement slurry 1506, the ability to control the convergence deformation of the inner stretching segment 3 and the outer high-pressure grouting jacking segment 3 in the tunnel is realized, that is, the "inner pulling and outer jacking" and "from point to surface" more efficient deformation control mode is realized, and the "horizontal egg" convergence deformation is more balancedly corrected, which provides a new method for the existing traditional reinforcement operation tunnel which only considers internal reinforcement or external reinforcement.

[0122] 4. When the deformation repair is completed, the wheel system 10 provided by the device can continue to travel, monitor and repair in the tunnel along the road surface 20 in the longitudinal direction by manual pushing, so as to realize the control of the long-distance convergence deformation of the tunnel section, improve the efficiency of the tunnel deformation control, and save the time cost of the control of the convergence deformation.

[0123] Implementation operation steps:

[0124] (1) Installation stage of structure.

[0125] When the segment 3 is made, the reinforced concrete network frame 2 needs to be laid on the circumferential periphery of each segment 3 through the sealing water-stopping rubber 102. In addition, the segments 3 located on the horizontal left and right sides should also be respectively installed with a ring-shaped steel sheet 101 on the surface of the reinforced concrete network frame 2 through the sealing water-stopping rubber 102, so as to form a ring-shaped steel sheet system-reinforced concrete network frame 2-segment 3 composite structure. Among them, the ring-shaped steel sheets 101 on each ring horizontal side of the tunnel need to keep the end faces aligned and the left and right layout heights consistent, so that when the flat pulling operation is performed, the force is uniformly dispersed "from point to surface", the hydraulic loading stress concentration is balanced, the segment 3 is uniformly gripped, the adverse effects such as joint cracking and faulting are avoided during the operation, and the overall uniformity of the longitudinal line shape of the controlled tunnel is ensured, as shown in Figure 3 .

[0126] Before tunnel construction, an anchor connection system 7 needs to be pre-installed in the composite structure of the annular steel sheet system-reinforced concrete grid 2-segment 3 along both sides of the tunnel's longitudinal and horizontal axes. This system includes: grouting anchors 701, threaded pins 702, and tray bases 703. The grouting anchors 701 are inserted through pre-drilled holes in the annular steel sheet system, reinforced concrete grid 2, and segment 3 composite structure. Their lower external threads are then tightened to the pre-drilled internal threads of the tray base 703. Finally, the threaded pins 702 are tightened into the pre-drilled threaded openings on both sides of the tray base 703, further preparing for subsequent deformation control operations. Figure 1 , Figure 4 As shown.

[0127] In actual engineering, the repair and reinforcement of shield tunnels is a long and complex process, and subway tunnels often operate for 70 to 100 years. The pre-installation of the annular steel plate system, reinforced concrete grid 2, segment 3 and anchor connection system 7 is the application of the "horizontal duck egg" shaped deformation full-cycle control concept of the device in this application in tunnel construction and operation, and provides a new idea for the comprehensive treatment technology of tunnel deformation from construction to operation.

[0128] (2) The device travel phase.

[0129] During shield tunnel operation, after determining the actual work location where deformation control is required, the outer shell 1309 of the traction system of the drive wheel system 10 is moved synchronously with the work platform 17 on the road surface 20 inside the tunnel by manual pushing, and finally reaches the designated work face.

[0130] (3) Anti-overturning stage of the device.

[0131] Based on the actual flatness of the site, before the flat pulling operation, determine the extension range of the lateral support hydraulic cylinder 11 boom to meet the working space requirements; then control the lifting height of the frog-shaped outriggers 8 to ensure that the working surface is in a balanced state; finally, insert and tighten the quick-release stabilizing screws 19 in the reserved holes of each rectangular pad 9 to ensure the stability and anti-overturning ability of the working equipment.

[0132] (4) Structural pre-connection stage.

[0133] First, connect the front end of the trailer pump pipe 1501 to the high-pressure grouting steel pipe 1504 and the rear end to the pump hopper 1503; then connect the rear end of the radial grouting pipe 1505 to the high-pressure grouting steel pipe 1504 and the front end to the grouting interface on the surface of the tray base 703, in preparation for the grouting operation.

[0134] (5) Hydraulic loading stage.

[0135] In the designated work surface, first input the work information instruction in the servo oil source operation panel 1302, pump and distribute the hydraulic oil 1303 to each chamber of the hydraulic connecting system internal oil cylinder 1305, and the hydraulic rod push plate 1307 in each chamber bears the hydraulic loading force, so as to realize the hydraulic loading work; during the hydraulic loading process, the servo oil source 1301 always maintains the stable output of the internal hydraulic pressure, and the hydraulic oil 1303 is pumped to each oil cylinder 1305 in a cycle.

[0136] (4) Flat pull work stage.

[0137] According to the work requirements, the corresponding control parameters are determined, and then the work information instruction is input in the servo oil source operation panel 1302, and the hydraulic oil 1303 is pumped and distributed to the oil cylinder 1305 inside the hydraulic connecting system; in the chamber of the oil cylinder 1305, the hydraulic oil 1303 loads the hydraulic pressure on the hydraulic rod push plate 1307, and the hydraulic rod push plate 1307 is displaced away from the outer wall side of the system shell 1309; at the same time, the hydraulic rod push plate 1307 synchronously drives the hydraulic telescopic rod 405 to extend and retract, so as to realize the extension and retraction of the flat pull telescopic arm system 4, and then realize the flat pull work, such as shown in Figure 9 .

[0138] (6) Digital monitoring of tunnel deformation control quantity and device mechanical response stage.

[0139] As shown in Figure 1 and Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , two groups of flat pull telescopic arm systems 4 are arranged. According to the work requirements, the flat pull work is implemented; the wireless stress strain sensor 1306 is installed on the hydraulic rod push plate 1307, and during the work process, the real-time collected stress strain change value is wirelessly transmitted to the dynamic stress strain acquisition instrument 1308 by the wireless stress strain sensor 1306, and then the wireless digital signal is transmitted to the receiver embedded in the servo oil source 1301, and then the tunnel deformation value is monitored and displayed in real time through the servo oil source operation panel 1302.

[0140] (7) High-pressure grouting stage.

[0141] As shown in Figure 10 , the hydraulic telescopic rod 405 is extended and retracted, and the hydraulic telescopic rod 405 is extended and retracted.As shown, after the tunnel deformation control is performed, the grouting electric control box 1507 controls the pump hopper 1503 and the stirring drum 1502 through the wires, the stirring drum 1502 uniformly stirs the high-pressure composite cement slurry 1506 and inputs it into the pump hopper 1503, and then the high-pressure composite cement slurry 1506 is sequentially pumped into the gap on the left and right sides of the tunnel through the drag pump pipe 1501, the high-pressure grouting steel pipe 1504, the radial grouting pipe 1505 and the grouting anchor rod 701. By filling the high-pressure composite cement slurry 1506, the ability to stretch the pipe piece 3 inside the tunnel and the high-pressure grouting jacking pipe piece 3 outside the tunnel to control the convergence deformation is realized, that is, the "internal pulling and external jacking" and "from point to surface" more efficient deformation control mode is realized, and the "horizontal egg" convergence deformation is more balancedly corrected.

[0142] The above description is only a description of the preferred embodiments of the present application, and is not any limitation on the scope of the present application. Any modification or modification made by any person skilled in the art according to the technical content disclosed above shall be regarded as an equivalent effective embodiment, and shall fall within the scope of protection of the technical scheme of the present application.

Claims

1. A system for monitoring convergence of a tunnel operated by deep cover soil transverse egg-shaped deformation, characterized in that, The tunnel construction system comprises a ring-shaped steel sheet system, a reinforced concrete net rack (2), a pipe piece (3), a flat stretching telescopic arm system (4), an anchor rod connecting system (7), a frog type supporting leg (8), a lateral supporting hydraulic cylinder (11), a hydraulic connecting system, a grouting system and a workbench (17). The ring-shaped steel sheet system comprises a ring-shaped steel sheet (101) and a sealing water-stopping rubber (102), the ring-shaped steel sheet (101) is installed on the surface of the reinforced concrete net rack (2) through the sealing water-stopping rubber (102), the ring-shaped steel sheet (101) is used for increasing the stress area, uniformly dispersing the stress and balancing the stress concentration, and facilitating uniform holding of the pipe piece (3) in the deformation control, the sealing water-stopping rubber (102) is filled between the ring-shaped steel sheet (101) and the reinforced concrete net rack (2) and between the reinforced concrete net rack (2) and the pipe piece (3), and is used for filling, stabilizing and water-stopping; The reinforced concrete net rack (2) is laid around each pipe piece (3) in advance when the pipe piece (3) is prefabricated, and the reinforced concrete net rack (2) is used for preventing the pipe piece (3) from being damaged and broken in the deformation control operation; The flat stretching telescopic arm system (4) comprises a connecting steel fork (402), a hydraulic fixing plate (403), a positioning rod (404), a hydraulic telescopic rod (405), a positioning bolt (406) and a retaining ring (409). The connecting steel fork (402) is a claw-shaped structure made of steel and is connected with the hydraulic telescopic rod (405) by welding, four holes are reserved at the end of the connecting steel fork (402) for connecting with the anchor rod connecting system (7); The hydraulic fixing plate (403) is provided with three pieces, which are located at the upper part, the middle part and the lower part, the hydraulic fixing plates (403) distributed at the upper part and the middle part are used for stabilizing the structure, the lower hydraulic fixing plate (403) is connected with the hydraulic connecting system by welding and is used for fixing, and a circular hole is reserved in the middle of the hydraulic fixing plate (403) for the hydraulic telescopic rod (405) to pass through; The positioning rod (404) is provided with four pieces, the upper part of the positioning rod (404) is connected with the hydraulic fixing plate (403) through the positioning bolt (406); The upper part of the hydraulic telescopic rod (405) is connected with the connecting steel fork (402), the lower part of the hydraulic telescopic rod (405) is connected with the hydraulic connecting system, and the flat pulling action is performed under the action of the hydraulic connecting system, the retaining ring (409) is arranged on the wall of the circular hole reserved in the middle of the hydraulic fixing plate (403), and the retaining ring (409) is used for avoiding friction damage of the hydraulic telescopic rod (405) caused by eccentric loading in the flat pulling operation. ​ The anchor rod connecting system (7) comprises a grouting anchor rod (701), a threaded bolt (702) and a tray base (703); The grouting anchor rod (701) is connected with the tray base (703); the grouting anchor rod (701) comprises a hollow through channel for transmitting high-pressure composite cement slurry (1506) of a grouting system; The threaded bolt (702) is connected with the tray base (703) through the end thereof; during operation, the threaded bolt (702) is connected with the tray base (703) through a reserved hole in the end of a connecting steel fork (402) of the flat telescopic arm system (4); The tray base (703) is connected with the grouting anchor rod (701) through screwing; the surface of the tray base (703) is further provided with a circular buckle type interface, which can conveniently connect a radial grouting pipe (1505) of the grouting system; The hydraulic connecting system comprises a servo oil source (1301), a servo oil source operation panel (1302), hydraulic oil (1303), a hydraulic pipeline (1304), an oil cylinder (1305), a wireless stress strain sensor (1306), a hydraulic rod push plate (1307), a dynamic stress strain acquisition instrument (1308) and a system shell (1309); The servo oil source (1301) is arranged above a workbench (17); the servo oil source (1301) is used for pumping, regulating and distributing the hydraulic oil (1303); the hydraulic oil (1303) is supplied to the oil cylinder (1305) through the hydraulic pipeline (1304) to provide a high-pressure and stable power source; the servo oil source operation panel (1302) is connected to the servo oil source (1301) and is used for regulating and controlling the servo oil source (1301) to pump the hydraulic oil (1303) to control the size of the hydraulic loading value of the oil cylinder (1305); the oil cylinder (1305) is arranged in the system shell (1309) and comprises two left and right symmetrical movable chambers; the wireless stress strain sensor (1306) and the hydraulic rod push plate (1307) are sequentially arranged at the upper end of the oil cylinder (1305) and are arranged in a left and right symmetrical manner; the upper end of the hydraulic rod push plate (1307) is welded to the lower end of the hydraulic telescopic rod (405) of the flat telescopic arm system (4) and is connected thereto; the hydraulic rod push plate (1307) is controlled to move horizontally and telescopically by regulating and controlling the servo oil source (1301) to pump the hydraulic oil (1303), thereby driving the hydraulic telescopic rod (405) of the flat telescopic arm system (4) to perform a horizontal and telescopic movement; the wireless stress strain sensor (1306) and the dynamic stress strain acquisition instrument (1308) are connected through a wireless digital signal to monitor the stress state; the dynamic stress strain acquisition instrument (1308) is arranged on the left side of the system shell (1309); The grouting system comprises a pump pipe (1501), a stirring drum (1502), a pump hopper (1503), a high-pressure grouting steel pipe (1504), a radial grouting pipe (1505), high-pressure composite cement slurry (1506), a grouting electric control box (1507) and a grouting electric control box operation panel (1508). Drag pump pipe (1501), the front end is connected with high-pressure grouting steel pipe (1504), the rear end is connected with pump hopper (1503), and the function is to bear the high-pressure composite cement slurry (1506) in the pump hopper (1503); The stirring drum (1502) is arranged on the upper portion of the workbench (17), and the function is to uniformly stir the high-pressure composite cement slurry (1506); The pump hopper (1503) is arranged above the workbench (17), and the function is to provide a high-pressure grouting power transmission source for the high-pressure composite cement slurry (1506); The discharge port of the stirring drum (1502) is arranged above the pump hopper (1503), and under the interaction of gravity and stirring power, the high-pressure composite cement slurry (1506) in the stirring drum (1502) is directly input into the hopper of the pump hopper (1503); The high-pressure grouting steel pipe (1504) is arranged on the top of the hydraulic connection system, and one is arranged on each side, a total of two, which are connected with the radial grouting pipe (1505), and the other end of the radial grouting pipe (1505) is connected with the tray base (703) of the anchor rod connection system (7), and the purpose is to transport the high-pressure composite cement slurry (1506) through the high-pressure grouting steel pipe (1504); The radial grouting pipe (1505) is arranged on both sides of the flat telescopic arm system (4), and one is arranged on each side, a total of two, which are installed during grouting construction and recovered after grouting is completed, and the purpose is to transport the high-pressure composite cement slurry (1506); The grouting electric control box (1507) is arranged above the workbench (17) and is used for controlling the pump hopper (1503) and the stirring drum (1502); The grouting electric control box operation panel (1508) is used for controlling the work of the grouting electric control box (1507) and displaying the running state and grouting parameter data through the interface.

2. The system for deep cover transverse ovoid deformation operation tunnel convergence monitoring according to claim 1, wherein, The frog type support leg (8) is provided with a rectangular pad (9) and a quick release type stabilizing screw (19) below each frog type support leg (8) for increasing the supporting area and the anti-overturning capacity, and is welded and connected with the lateral support hydraulic cylinder (11) on one side; the other side of the lateral support hydraulic cylinder (11) is hingedly connected with the system shell (1309) of the hydraulic connection system; the frog type support leg (8) adjusts the balanced state of stress through telescopic displacement, and meets the safety and stability during heavy load operation; The lateral support hydraulic cylinder (11) is provided with four, and the purpose is to change the arm length through hydraulic control telescopic displacement to obtain the required amplitude of the on-site construction operation.

3. The system for deep cover transverse ovoid deformation operation tunnel convergence monitoring of claim 1, wherein, The annular steel sheet (101) is arranged on the left and right sides of each ring of the tunnel, and one annular steel sheet (101) is arranged on each side, and the two end faces need to be aligned and the arrangement height needs to be consistent.

4. The system for deep cover transverse ovoid deformation operation tunnel convergence monitoring of claim 1, wherein, A wheel system (10) is further provided; the wheel system (10) is arranged below the system shell (1309) of the hydraulic connection system and the workbench (17).

5. The system for deep cover transverse ovoid deformation operation tunnel convergence monitoring of claim 1, wherein, A traction steel cable (16) is further provided, and the purpose is to pull the system shell (1309) and the workbench (17).

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