CN210530858U - Tunnel secondary lining concrete pouring system - Google Patents

Abstract

The tunnel secondary lining concrete pouring system comprises a flow monitoring device, a mold-entering temperature monitoring device and a pressure visual soft lap joint device, a plurality of high frequency pneumatic vibrator (12), gas compressor (13) and electric cabinet (40), flow monitoring device's three-dimensional laser scanner, flow sensor meter (1) all is connected with electric cabinet (40), go into mould temperature monitoring device's temperature sensor (5) and install on the back of two lining platform truck steel form in the tunnel (3), the visual soft bridging device of pressure includes rubber slab (6), lap-joint plate (8) bottom is installed additional in rubber slab (6), install pressure-sensitive chip (9) on rubber slab (6), a plurality of high frequency pneumatic vibrator (12) are arranged on the back of two lining platform truck steel form (3), be provided with pneumatic switch solenoid valve (16) on shunt tubes (14), gas compressor (13) and electric cabinet (40) connect. And the automation of pouring the secondary lining concrete is realized.

Description

Tunnel secondary lining concrete pouring system

Technical Field

The utility model relates to a concrete placement system, more specifically the two lining concrete placement systems in tunnel that says so belongs to tunnel lining construction technical field.

Background

At present, with the rapid development of high-speed rails in China, more and more tunnels are provided; along with the continuous improvement of the quality of the tunnel lining and the standardized construction requirements, the quality requirements of the tunnel lining concrete are higher and higher.

In the traditional tunnel lining process, the steel templates of the two lining trolleys are directly lapped with the concrete of the upper plate before the concrete is poured, and relevant jacking pressure control is not needed, so that the lapped concrete is easy to be jacked and cracked, and the blocks at construction joints are easy to fall off; in the pouring process, a ground pump pumps concrete to each feeding hole of the two-lining trolley, a handheld vibrating rod is used for vibrating at the feeding holes, and an electric attached vibrator is used for vibrating when the vault is poured, however, because the steel bars of the vault of the two linings are dense, the vault concrete cannot be vibrated manually, and the vibrator has insufficient frequency and small vibrating radius, whether the vault concrete is dense and full cannot be ensured, and the quality problems of concrete cavities of the vault of the tunnel lining, insufficient concrete strength and the like are easily caused; in the process of punching the top of the second lining vault, concrete construction is invisible, and the traditional method depends on observing whether an end template leaks slurry or not, so that whether the second lining vault is filled with concrete cannot be accurately judged, and the concrete of the tunnel lining vault is easy to void; the quality problem of the vault of the tunnel lining causes great safety risk to later-stage train operation, so that the traditional tunnel lining process cannot meet the construction requirement. How to avoid tunnel lining vault concrete quality defects such as piece, cavity that fall, ensure later stage tunnel operation safety becomes the problem that needs to solve at present urgently.

Disclosure of Invention

The utility model aims to provide a two lining concrete placement systems in tunnel to the above-mentioned problem that two lining concrete placement in current tunnel exist.

In order to achieve the above object, the technical solution of the present invention is: the tunnel secondary lining concrete pouring system comprises a flow monitoring device, a mold entering temperature monitoring device, a pressure visualization soft lap joint device, a plurality of high-frequency pneumatic vibrators, a gas compressor and an electric cabinet, wherein the flow monitoring device comprises a three-dimensional laser scanner and a flow sensor, the flow sensor is installed on a concrete main conveying pump pipe, the three-dimensional laser scanner and the flow sensor are both connected with the electric cabinet, the mold entering temperature monitoring device comprises a temperature sensor, the temperature sensor is installed on the back surface of a steel template of a tunnel secondary lining trolley, the temperature sensor is connected with the electric cabinet, the pressure visualization soft lap joint device comprises a rubber plate, the rubber plate is additionally installed at the bottom of the secondary lining trolley close to a previous plate and a secondary lining lapping plate, the rubber plate and the steel template of the secondary lining trolley have the same arc length in the circumferential direction, and a pressure induction chip is installed on the rubber plate, the pressure sensing chip is connected with the electric cabinet, the high-frequency pneumatic vibrators are arranged on the back face of the steel formwork of the two-lining trolley, the high-frequency pneumatic vibrators are respectively connected with a main gas pipeline of the gas compressor through flow dividing pipes, pneumatic switch electromagnetic valves are arranged on the flow dividing pipes, and the gas compressor is connected with the electric cabinet.

The rubber plate is provided with semicircular rubber sealing ends close to the two lining ends of the upper plate, the pressure sensing chips are multiple, and the circumferential distance between every two adjacent pressure sensing chips is 1 m.

The high-frequency pneumatic vibrator is longitudinally arranged between two adjacent side wall feed inlets in a quincunx shape.

The high-frequency pneumatic vibrators are arranged on two sides of the back face of a steel formwork of the two-lining trolley, the high-frequency pneumatic vibrators in the first row are arranged in three rows in the circumferential direction on the single-side direction, the high-frequency pneumatic vibrators in the first row are located on the 1.5m position of a longitudinal construction joint of an inverted arch and two linings, and the circumferential distance between the adjacent high-frequency pneumatic vibrators is 2 m.

The tunnel secondary lining trolley steel formwork vibrating device is characterized by further comprising a plurality of automatic inserting type vibrating devices, wherein the plurality of automatic inserting type vibrating devices are arranged on the back face of the tunnel secondary lining trolley steel formwork, and the plurality of automatic inserting type vibrating devices are connected with a gas compressor.

The automatic plug-in type vibrating device is longitudinally arranged on two sides of the vault and the arch part of the two-lined trolley, the automatic plug-in type vibrating device arranged on the vault of the two-lined trolley is respectively arranged between the end head of a steel formwork of the two-lined trolley and the vault feed inlet and between adjacent vault feed inlets, and the automatic plug-in type vibrating device arranged on two sides of the arch part of the two-lined trolley is respectively arranged at the position which is 1.8m away from the vault feed inlet in the circumferential direction.

The automatic insertion type vibrating device comprises a steel frame, a pneumatic jacking device, a jacking slideway and a high-frequency vibrating rod, wherein the steel frame is arranged on the back surface of a steel formwork of a tunnel secondary lining trolley, the pneumatic jacking device is arranged at the center of the bottom of the steel frame, the jacking slideway comprises a slideway steel plate and mounting chutes arranged on two inner sides of the steel frame, the slideway steel plate is in sliding connection with the jacking chutes, the pneumatic jacking device is connected with a gas compressor, the slideway steel plate comprises an upper steel plate and a lower steel plate, the bottom end of the high-frequency vibrating rod is fixed on the upper steel plate of the slideway steel plate, the top of a jacking cylinder column of the pneumatic jacking device is connected with the lower steel plate of the slideway steel plate, the upper part of the high-frequency vibrating rod is inserted into the steel formwork of the tunnel secondary lining trolley, the top of the high-frequency vibrating rod is flush with the surface of the steel formwork of the tunnel secondary lining trolley, and a rubber sealing ring is additionally arranged, and the rubber seal ring is tightly attached to the high-frequency vibrating rod, and a damping rubber column is arranged between the upper layer steel plate and the lower layer steel plate of the slideway steel plate.

The device comprises a vault endoscopic anti-hollowing device, the vault endoscopic anti-hollowing device comprises an endoscope and a transparent pipe, the transparent pipe is arranged on a vault waterproof plate along the line direction, a probe of the endoscope is arranged in the transparent pipe, and the end head of the transparent pipe is exposed out of the end head of the two-lining trolley by 20 cm.

The pressure sensing piece is arranged at the vault of the two-lining trolley, the pressure sensing gasket is arranged on the geotextile, and the pressure sensing piece and the pressure sensing gasket are both connected with the electric cabinet.

The vault exhaust and slurry overflow grouting device comprises a comprehensive pipe reserved opening arranged on a steel template of the two-lining trolley, the comprehensive pipe reserved opening and the vault feed inlet are arranged at intervals, a comprehensive pipe is inserted into the comprehensive pipe reserved opening, an insertion identification line is carved at the joint of the top of the comprehensive pipe and the steel template of the two-lining trolley, exhaust and slurry overflow grouting teeth are arranged at the top end of the comprehensive pipe, and the exhaust and slurry overflow grouting tooth tops are attached to a waterproof board layer.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the rubber plate in the middle pressure visualization soft lapping device can protect the concrete edge from being squeezed and cracked by the two-lining trolley, and the appearance quality and the entity quality of the lapping part between the two plates and the two-lining concrete of the tunnel are ensured; the semicircular rubber sealing end can ensure that concrete and a rubber plate are tightly attached to form a sealing end, so that slurry overflowing and leaking are avoided; and the electric cabinet pressure sensing chip reads the pressure sensing value, and when the value is close to the compression resistance value of the concrete lined in the first plate and the second plate, the jacking is stopped, so that the concrete lined in the first plate and the second plate is further prevented from being jacked and cracked, the visual operation is realized, and the construction requirement is met.

2. The automatic inserted type vibrating device realizes the automatic control vibration of the high-frequency vibrating rod into the concrete, thereby realizing the automatic inserted type vibration of the concrete in the tunnel secondary lining and making up the blank of the vibration of the concrete in the tunnel secondary lining; the problems that the existing vault is hollow with two linings and concrete is not compact are solved.

3. The utility model discloses well temperature sensor realizes that the concrete goes into mould temperature acquisition frequency height, data are accurate, and can the overall process, the whole two lining concrete temperature distribution condition of omnidirectional demonstration, has guaranteed the construction quality of concrete.

4. The utility model discloses well flow monitoring device has realized the measuring record to the actual square flow of concrete of carrying, and the square flow of mould is gone into to the control concrete of accuracy simultaneously to with it and estimate and pour two lining concrete square flow contrasts, thereby guaranteed that two lining concrete placement are full.

5. The utility model discloses well arch crown top pressure response piece can audio-visual pressure value of seeing two lining vault concretes to the pressure piece, has ensured that two lining vault concretes have been beaten to full, has effectively solved two lining vault concretes and has come to nothing phenomenon.

6. The utility model discloses in realize automatic vibration through electric cabinet control to realize two lining vibrations automation, mechanization, standardization.

7. In the middle-vault exhaust and overflow grouting device, the position of the marking line inserted into the comprehensive pipe is checked to judge whether the waterproof board layer cuts the secondary lining concrete, namely whether cavities exist between the waterproof board layer and the primary support surface; the air in the vault can be exhausted through the exhaust of the comprehensive pipe, and a cavity formed by compressed air of vault concrete is avoided, so that the phenomenon of the vault concrete being not full can be reduced and avoided, and the quality of the vault concrete of the secondary lining of the tunnel is improved; concrete grout can be clearly seen to flow out through the grout overflowing of the comprehensive pipe, and cavities which are possibly formed due to the fact that vault concrete construction is invisible and whether the vault concrete is filled or not can not be clearly judged are avoided; realize the later stage through synthesizing pipe slip casting simultaneously and detect two linings in the tunnel, if there is the cavity in the discovery, can pass through the utility model discloses synthesize the pipe and carry out the slip casting and handle, avoided chiseling the hole destruction to two lining concrete.

8. The utility model reduces the mould grouting, reduces the operators, saves the manpower, reduces the labor capacity of workers, and is economical, practical and simple; meanwhile, the labor intensity and the safety risk of operation are correspondingly reduced, the construction efficiency and the construction quality are improved, and the high-altitude safety coefficient of the tunnel is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the middle flow rate monitoring device of the present invention.

Fig. 3 is the structure schematic diagram of the temperature monitoring device for the middle mold.

Fig. 4 is the utility model discloses the visual soft bridging device sectional view of well pressure.

Fig. 5 is a sectional view a-a of fig. 4.

Fig. 6 is a partially enlarged view of fig. 5.

Fig. 7 is a layout diagram of the medium-high frequency pneumatic vibrator of the present invention.

Fig. 8 is a sectional view of the arrangement of the medium-high frequency pneumatic vibrator and the automatic insertion type vibrator of the present invention.

Fig. 9 is a layout and development view of the middle-high frequency pneumatic vibrator and the automatic insertion type vibrator of the present invention.

Fig. 10 is a schematic structural view of the automatic insertion type vibrator of the present invention.

Fig. 11 is a top view of the automatic insertion type vibrator of the present invention.

Fig. 12 is a state diagram of the automatic insertion type vibrator of the present invention.

Fig. 13 is a schematic structural view of the endoscopic anti-coming-off device for a middle dome of the present invention.

Fig. 14 is a sectional view of the endoscopic anti-coming-off device for a middle dome of the present invention.

Fig. 15 is a schematic view of the arrangement of the middle pressure sensing piece of the present invention.

Fig. 16 is a schematic view of the structure of the middle pressure sensing gasket of the present invention.

Fig. 17 is a cloth hole schematic diagram of the middle comprehensive pipe reserved opening of the utility model.

Fig. 18 is a schematic sectional view of the installation of the middle integrated pipe of the present invention.

Fig. 19 is a schematic view of the structure of the integrated tube of the present invention.

In the figure, a flow sensor 1, a concrete main conveying pump pipe 2, a two-lining trolley steel template 3, a ground pump 4, a temperature sensor 5, a rubber plate 6, a two-lining trolley 7, a lapping plate 8, a pressure sensing chip 9, a semicircular rubber end cap 10, a fixing bolt 11, a high-frequency pneumatic vibrator 12, a gas compressor 13, a shunt pipe 14, a main gas pipeline 15, a pneumatic switch electromagnetic valve 16, a side wall feed inlet 17, an automatic insertion type vibrator 18, a vault feed inlet 19, a steel frame 20, a pneumatic lifter 21, a lifting slideway 22, a high-frequency vibrating rod 23, a slideway steel plate 24, a lifting cylinder column 25, a rubber sealing ring 26, a damping rubber column 27, a connecting bolt 28, an endoscope 29, a transparent pipe 30, a waterproof plate 31, a pressure sensing sheet 32, a pressure sensing gasket 33, a geotextile 34, a hot melt gasket 35, a comprehensive pipe reserved opening 36, a comprehensive pipe 37 and an insertion identification line 38, exhaust, overflow and grouting teeth 39 and an electric cabinet 40.

Detailed Description

The invention is described in further detail below with reference to the following description of the drawings and the detailed description.

Referring to fig. 1, the tunnel secondary lining concrete pouring system comprises a flow monitoring device, a mold-entering temperature monitoring device, a pressure visualization soft lap joint device, a plurality of high-frequency pneumatic vibrators 12, a gas compressor 13 and an electric cabinet 40.

Referring to fig. 2, the flow monitoring device comprises a three-dimensional laser scanner and a flow sensor 1, wherein the flow sensor 1 is installed on a concrete main conveying pump pipe 2; all the concrete entering the second lining is conveyed through the main concrete conveying pump pipe 2, and the flow sensor 1 records the volume of the concrete passing through the main concrete conveying pump pipe 2. The three-dimensional laser scanner and the flow sensor 1 are both connected with the electric cabinet 40, and the electric cabinet 40 receives signals transmitted by the three-dimensional laser scanner and the flow sensor to realize real-time monitoring. During construction, before the second lining is poured, the three-dimensional laser scanner carries out full-coverage scanning on the primary section, the estimated volume of the poured second lining concrete is calculated after scanning is finished, the estimated volume of the poured second lining concrete is compared with the actual volume of the conveyed concrete measured by the flow sensor 1 in real time, and when the actual volume of the poured concrete is larger than the estimated volume of the poured second lining concrete, the electric cabinet 40 sends out an alarm signal, and concrete pouring is suspended or stopped.

Referring to fig. 3, the mold-entering temperature monitoring device comprises a temperature sensor 5, wherein the temperature sensor 5 is installed on the back surface of the steel formwork 2 of the tunnel secondary lining trolley, and the back surface of the steel formwork 2 of the tunnel secondary lining trolley is the surface of the steel formwork 3 of the tunnel secondary lining trolley facing the inside of the trolley; the temperature sensor 5 is connected with an electric cabinet 40. Usually, a plurality of temperature sensors 5 are arranged, the temperature sensors 5 are uniformly arranged in the middle of the two sides of the two-lining trolley 7 along the side wall to the vault according to the distance of 1 meter, and three temperature sensors 5 are uniformly arranged on the vault of the two-lining trolley 7. When the concrete pouring device works, the temperature sensor 5 monitors the surface temperature of the steel template 3 of the two-lining trolley in real time and transmits the surface temperature to the electric cabinet 40, and when the surface temperature of the steel template 3 of the two-lining trolley reaches a set critical value, the electric cabinet 40 sends out an alarm signal, and concrete pouring is suspended; thereby guaranteed that the income mould concrete temperature meets the requirements, guaranteed the concrete strength.

Referring to fig. 4 to 6, the pressure visualization soft lap joint device comprises a rubber plate 6, the rubber plate 6 is additionally arranged at the bottom of a second liner trolley 7 close to a first plate and a second liner lap joint plate 8, the circumferential upper arc length of the rubber plate 6 and the circumferential upper arc length of a second liner trolley steel template 3 are consistent, a pressure sensing chip 9 is arranged on the rubber plate 6, and the pressure sensing chip 9 is connected with an electric cabinet 40. The rubber plate 6 is generally 12mm in thickness, 10cm in width and 2-3 mm in compression deformation amount, and the rubber plate 6 is 2mm higher than the steel template 3 of the two-lining trolley; the rubber sheet 6 is fixed by fixing bolts 11, the fixing bolts 11 being arranged longitudinally along the two-lining bogie 7, the longitudinal direction here being referred to as the track direction. Furthermore, a semicircular rubber sealing end 10 is arranged at the end, close to the second liner, of the rubber plate 6 on the upper plate, the height of the semicircular rubber sealing end 10 is 10mm, and the height of the semicircular rubber sealing end 10 refers to the farthest distance between the outer surface of the semicircular rubber sealing end 10 and the rubber plate 6; the compression elastic modulus of the semicircular rubber end capping 10 is controlled to be 5-8 mm, the semicircular rubber end capping 10 is bonded with the rubber plate 6 by glue, and the semicircular rubber end capping 10 is used for ensuring that the slurry leakage phenomenon cannot occur at the soft lap joint end. Furthermore, the number of the pressure sensing chips 9 is multiple, and the circumferential distance between adjacent pressure sensing chips 9 is 1 m. During construction, when the second lining trolley 7 is unfolded, the gap of the steel template 3 of the second lining trolley 7 is just corresponding to the end of the concrete of the second lining of the upper plate, so that the position of the soft lap joint device is just aligned with the concrete surface, and the elasticity of the rubber plate 6 is utilized to ensure that the joint position of the second lining concrete is closely attached; and the rubber elasticity of the rubber plate 6 is utilized for buffering, so that the concrete corner is prevented from being squeezed and cracked. Meanwhile, when the rubber plate 6 is lapped with the second lining concrete of the previous plate, the pressure sensing chip 9 is extruded, the pressure sensing value is read through the electric cabinet 40, and when the pressure sensing value on the electric cabinet 40 is close to the compression resistance value of the second lining concrete of the previous plate, the jacking is stopped, so that the second lining concrete of the previous plate is further prevented from being jacked and cracked.

Referring to fig. 7 to 9, the plurality of high-frequency pneumatic vibrators 12 are arranged on the back surface of the steel formwork 3 of the two-lining trolley, the plurality of high-frequency pneumatic vibrators 12 are respectively connected with a main gas pipeline 15 of a gas compressor 13 through a shunt pipe 14, a pneumatic switch electromagnetic valve 16 is arranged on the shunt pipe 14, and the gas compressor 13 is connected with an electric cabinet 40; plural herein means two or more. Further, the high-frequency pneumatic vibrators 12 are arranged between two adjacent side wall feed inlets 17 along the longitudinal direction in a quincunx shape. Further, the high-frequency pneumatic vibrators 12 are arranged on two sides of the back face of the steel formwork 3 of the two-lining trolley, the single side is annularly arranged in three rows, the first row of the high-frequency pneumatic vibrators 12 is located at a position 1.5m above an inverted arch and a longitudinal construction joint of the two linings, and the annular distance between every two adjacent high-frequency pneumatic vibrators 12 is 2 m. During construction, the gas compressor 2 is started through the electric cabinet 40 to perform gas compression, and the pneumatic switch electromagnetic valve 16 is started through the electric cabinet 40 in the concrete pouring process, so that the high-frequency pneumatic vibrator 12 can vibrate according to the vibration time set by the electric cabinet 40. The high-frequency pneumatic vibrator 12 has high vibration frequency and large vibration radius, and can realize the vibration of deep concrete; thereby the deep concrete vibration that has solved is not in place, the not closely knit scheduling problem of concrete, and controls simply, convenient.

Referring to fig. 8 to 12, the system further comprises a plurality of automatic insertion type vibrating devices 18, the plurality of automatic insertion type vibrating devices 18 are arranged on the back surface of the steel formwork 3 of the tunnel secondary lining trolley, and the plurality of automatic insertion type vibrating devices 18 are connected with the gas compressor 13. Further, the automatic plug-in type vibrating devices 18 are longitudinally arranged on two sides of the vault and the arch of the two-lining trolley 7, the automatic plug-in type vibrating devices 18 arranged on the vault of the two-lining trolley 7 are respectively arranged between the end of the steel formwork 3 of the two-lining trolley and the vault feed inlet 19 and between the adjacent vault feed inlets 19, and the automatic plug-in type vibrating devices 18 arranged on two sides of the arch of the two-lining trolley 7 are respectively arranged at positions which are 1.8m away from the vault feed inlet 19 in the circumferential direction. During construction, the electric cabinet 40 controls the depth of the automatic plug-in type vibrating device 18 in the concrete and the vibrating time, thereby realizing the automatic plug-in type vibrating control.

Referring to fig. 10 to 12, in particular, the automatic insertion type vibrating device 18 includes a steel frame 20, a pneumatic jacking device 21, a jacking slideway 22 and a high-frequency vibrating rod 23; the steel frame 20 is installed on the back of the tunnel secondary lining trolley steel formwork 3, namely the steel frame 20 is installed on the face, facing the inside of the trolley, of the tunnel secondary lining trolley steel formwork 3. The pneumatic jacking device 21 is arranged at the center of the bottom of the steel frame 20; jacking slide 22 include slide steel sheet 24 and set up the installation spout in two inboards of steel frame 20, slide steel sheet 24 and jacking spout sliding connection, slide steel sheet 24 can slide from top to bottom along the jacking spout. The slideway steel plate 24 comprises an upper steel plate and a lower steel plate, the bottom end of the high-frequency vibrating rod 23 is fixed on the upper steel plate of the slideway steel plate 24, the top of a jacking cylinder column 25 of the pneumatic jacking device 21 is connected with the lower steel plate of the slideway steel plate 24, and the pneumatic jacking device 21 is connected with the gas compressor 13; the cylinder column 25 is jacked up by the gas compressor 13, and simultaneously, the slideway steel plate 24 is driven to rise in the jacking chute. The upper part of the high-frequency vibrating rod 23 is inserted into the steel formwork 4 of the secondary lining trolley; the top of the high-frequency vibrating rod 23 is flush with the surface of the steel formwork 4 of the two-lining trolley, so that the surface of the two-lining concrete is ensured to be flat. A rubber sealing ring 26 is additionally arranged between the two lining trolley steel templates 3 and the high-frequency vibrating rod 23, the rubber sealing ring 26 is tightly attached to the high-frequency vibrating rod 23, and the rubber sealing ring 26 is fixed on the two lining trolley steel templates 3; the rubber sealing ring 26 is used for preventing the high-frequency vibrating rod 23 from leaking slurry in the jacking process, and reducing the influence of the vibration force of the high-frequency vibrating rod 23 on the rigidity of the steel formwork 3 of the two-lining trolley. A damping rubber column 27 is arranged between the upper layer steel plate and the lower layer steel plate of the slideway steel plate 24, and the damping rubber column 27 is connected with the upper layer steel plate and the lower layer steel plate of the slideway steel plate 24 through a connecting bolt 28; the shock absorption rubber column 27 can effectively reduce the influence of the vibration force of the high-frequency vibrating rod 23 on the pneumatic jacking device 21 and the steel frame 20. Further, the steel frame 7 on be provided with and draw the switch, draw the switch and 11 bottoms parallel and level of slide steel plate in the position of steel frame 7, draw the switch and articulate with slide steel plate 11, draw the switch and be connected with electric cabinet 40.

Referring to fig. 13 to 14, the system further comprises a vault endoscopic anti-evacuation device comprising an endoscope 29 and a transparent tube 30. The transparent tube 30 is arranged on the vault waterproof plate 31 along the line direction, and a probe of the endoscope 29 can be arranged in the transparent tube 30; the transparent tube 30 is closely attached to the waterproof plate 31, and the end of the transparent tube 30 is exposed out of the end of the two-lining trolley 7 by 20 cm. During the construction of the second lining of the tunnel, after the waterproof board 31 is paved, a transparent pipe 30 is installed on the waterproof board 31 of the vault, so that the transparent pipe 30 is exposed to the end 20cm of the second lining trolley 7. When the second lining concrete is poured to the vault, the switch of the endoscope 29 is opened, the probe of the endoscope 29 is inserted into the transparent tube 30 to be plugged back and forth, the outside of the tube is visualized by using the transparent tube 30, an image collected by the probe of the endoscope 29 is transmitted to the display of the endoscope 29, and the pouring fullness condition of the vault concrete is observed by observing the condition that the transparent tube 30 is wrapped by the concrete.

Referring to fig. 15, the system further comprises a pressure sensing piece 32, wherein the pressure sensing piece 32 is installed at the vault of the two-lining trolley 7, and the pressure sensing piece 32 is connected with an electric cabinet 40. Further, the pressure sensing piece 32 is positioned on the center line of the arch of the two-lining trolley 7; the number of the pressure sensing pieces 32 is plural, and the plural pressure sensing pieces 32 are uniformly distributed on the center line of the arch crown of the two-lined trolley 7, and two or more of the plural pressure sensing pieces are arranged at each position. During installation, a plurality of pressure induction sheets 32 are laid at the center line of the arch crown of the secondary trolley 7 before the secondary trolley 7 is positioned, and the pressure value of concrete on the top of the secondary trolley 7 is read in real time through the electric cabinet 40; and when the pressure value meets the requirement, determining that concrete pumping is finished, and further controlling the pouring quality of the concrete.

Referring to fig. 16, the system further comprises a pressure sensing gasket 33, wherein the pressure sensing gasket 33 is mounted on the geotextile 34, and the pressure sensing gasket 33 is connected with the electric cabinet 40. Further, the pressure sensing gasket 33 is located at a position of the geotextile 34 corresponding to the center line of the arch of the tunnel. And the pressure sensing gasket 33 is in a strip shape, and the strip-shaped pressure sensing gasket 33 is arranged along the center line of the vault of the tunnel, and the length of the strip-shaped pressure sensing gasket is consistent with that of the whole plate. During installation, the pressure sensing gasket 33 needs to be laid at the position of the geotextile 24 corresponding to the center line of the arch crown of the tunnel before the waterproof board 31 is laid; when concrete pumping is saturated, pressure is conducted to the pressure sensing gasket 33, so that full concrete filling is ensured, and the phenomenon of concrete void of the arch top of the tunnel is prevented.

Referring to fig. 17 to 19, the system further comprises a vault air-discharge slurry-overflow grouting device, wherein the vault air-discharge slurry-overflow grouting device comprises a comprehensive pipe reserved opening 36 arranged on the steel formwork 3 of the two-lining trolley, and the comprehensive pipe reserved opening 36 and the vault feed inlet 19 are arranged at intervals. An integrated pipe 37 is inserted into the integrated pipe reserved opening 36, an insertion identification line 38 is carved at the joint of the integrated pipe 37 and the top of the two-lining trolley steel template 3, the insertion identification line 38 is used for identifying the insertion depth of the integrated pipe 37 into the two-lining trolley steel template, an exhaust overflowing grouting tooth 39 is arranged at the top end of the integrated pipe 37, and the exhaust overflowing grouting tooth 39 abuts against the waterproof plate 31; namely, one end of the comprehensive pipe 37 is inserted into the second liner through the comprehensive pipe reserved opening 36, and after the comprehensive pipe 37 is completely inserted, the exhaust overflowing grouting teeth 39 abut against the waterproof plate 31, so that the exhaust overflowing grouting teeth 39 at the top of the comprehensive pipe 37 are located at the highest point of the section. Further, the length of the integrated pipe 37 is the designed lining thickness + the excess data + the extended trolley reserved length of 10cm, and the excess data is the normal thickness of the design contour line of the secondary lining concrete of the tunnel-the designed lining concrete thickness. During construction, whether the waterproof board 31 cuts secondary lining concrete or whether cavities exist between the waterproof board 31 and the primary support surface is judged by checking the position of the inserted identification line 38; and the comprehensive pipe 37 is used for exhausting air, so that the air at the vault can be exhausted, and a cavity formed by compressed air of vault concrete is avoided, so that the phenomenon of the vault concrete being not full can be reduced and avoided, and the quality of the vault concrete of the secondary lining of the tunnel is improved. And the concrete grout can be clearly seen to flow out through the grout overflowing of the comprehensive pipe 37, so that a cavity which is possibly formed because the vault concrete construction is invisible and cannot be clearly judged whether the vault concrete is filled is avoided. Can realize the later stage simultaneously through synthesizing 37 slip casting of pipe and detect two linings in the tunnel, if there is the cavity in the discovery, can carry out the slip casting through synthesizing 37 pipes and handle, avoid chiseling the hole destruction to two lining concrete.

Referring to fig. 1 to 19, the utility model discloses concrete placement system utilizes three-dimensional laser scanner to calculate to predict before waterproof board 31 lays and pours two lining concrete cubic capacities to input in the electric cabinet 40. After the geotextile 34 is laid and hung, a pressure sensing gasket 33 is installed on the geotextile 34 at the arch top of the tunnel, meanwhile, a pressure sensing sheet 32 is installed at the arch top of the two-lining trolley 7, a pressure sensing chip 9 is installed on the rubber plate 6, after the two-lining trolley 7 is positioned, the steel formwork 3 of the two-lining trolley is jacked, and the pressure value of the pressure sensing chip 9 is read to ensure that the concrete at the lap joint is not jacked to be cracked. When concrete is poured, the flow monitoring device realizes the detection of the actual amount of the conveyed concrete; automatic vibration is realized through the electric cabinet 40 high-frequency pneumatic vibrator 12 and the automatic insertion type vibrator 1. When the concrete pouring is about to finish, observing whether the dome pressure value, the induction lamps of the pressure induction gaskets 33 are lightened and whether the comprehensive pipe 37 overflows, and then observing whether the transparent pipe 30 is wrapped by the concrete by using the transparent pipe 30 and an endoscope; meanwhile, the volume of the pre-estimated poured secondary lining concrete is compared with the actual volume of the concrete conveyed by the flow sensor 1 in real time through the electric cabinet 40, the vault concrete is comprehensively judged to be full, and the pouring of the concrete is stopped after the vault concrete is full.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, above-mentioned structure should all be regarded as belonging to the utility model discloses a protection scope.

Claims (10)

1. Two lining concrete placement systems in tunnel, its characterized in that: comprises a flow monitoring device, a mold-entering temperature monitoring device, a pressure visual soft lapping device, a plurality of high-frequency pneumatic vibrators (12), a gas compressor (13) and an electric cabinet (40), wherein the flow monitoring device comprises a three-dimensional laser scanner and a flow sensor (1), the flow sensor (1) is installed on a concrete main conveying pump pipe (2), the three-dimensional laser scanner and the flow sensor (1) are both connected with the electric cabinet (40), the mold-entering temperature monitoring device comprises a temperature sensor (5), the temperature sensor (5) is installed on the back of a steel template (3) of a tunnel two-lining trolley, the temperature sensor (5) is connected with the electric cabinet (40), the pressure visual soft lapping device comprises a rubber plate (6), the rubber plate (6) is additionally installed at the bottom of the two-lining trolley (7) close to an upper plate two-lining plate (8), the rubber plate (6) and the two-lining trolley steel template (3) are consistent in circumferential upper arc length, a pressure sensing chip (9) is installed on the rubber plate (6), the pressure sensing chip (9) is connected with an electric cabinet (40), a plurality of high-frequency pneumatic vibrators (12) are arranged on the back face of the two-lining trolley steel template (3), the high-frequency pneumatic vibrators (12) are connected with a main gas pipeline (15) of a gas compressor (13) through flow dividing pipes (14) respectively, pneumatic switch electromagnetic valves (16) are arranged on the flow dividing pipes (14), and the gas compressor (13) is connected with the electric cabinet (40).

2. The tunnel secondary lining concrete casting system according to claim 1, wherein: the rubber plate (6) is provided with semicircular rubber sealing ends (10) close to the two lining ends of the upper plate, the pressure sensing chips (9) are multiple, and the circumferential distance between every two adjacent pressure sensing chips (9) is 1 m.

3. The tunnel secondary lining concrete casting system according to claim 1, wherein: the high-frequency pneumatic vibrator (12) is longitudinally arranged between two adjacent side wall feed inlets (17) in a quincunx shape.

4. The tunnel secondary lining concrete casting system according to claim 1, wherein: the high-frequency pneumatic vibrators (12) are arranged on two sides of the back face of the steel formwork (3) of the two-lining trolley, the high-frequency pneumatic vibrators (12) in the first row are arranged in three rows in the circumferential direction on the vertical construction joint of the inverted arch and the two lining in the single-side direction, the distance between the high-frequency pneumatic vibrators (12) in the first row is 1.5m, and the distance between the high-frequency pneumatic vibrators in the adjacent row is 2m in the circumferential direction.

5. The tunnel secondary lining concrete casting system according to claim 1, wherein: the tunnel secondary lining trolley steel formwork structure is characterized by further comprising a plurality of automatic insertion type vibrating devices (18), wherein the plurality of automatic insertion type vibrating devices (18) are arranged on the back face of the tunnel secondary lining trolley steel formwork (3), and the plurality of automatic insertion type vibrating devices (18) are connected with the gas compressor (13).

6. The tunnel secondary lining concrete casting system according to claim 5, wherein: the automatic plug-in type vibrating device (18) is longitudinally arranged on two sides of the vault and the arch of the two lining trolleys (7), the automatic plug-in type vibrating device (18) arranged on the vault of the two lining trolleys (7) is respectively arranged between the end of the steel formwork (3) of the two lining trolleys and the vault feed inlet (19) and between the adjacent vault feed inlets (19), and the automatic plug-in type vibrating device (18) arranged on two sides of the arch of the two lining trolleys (7) is respectively arranged at the position which is 1.8m away from the vault feed inlet (19) in the circumferential direction.

7. The tunnel secondary lining concrete casting system according to claim 5, wherein: the automatic insertion type vibrating device (18) comprises a steel frame (20), a pneumatic jacking device (21), a jacking slideway (22) and a high-frequency vibrating rod (23), wherein the steel frame (20) is installed on the back of a steel formwork (3) of the tunnel secondary lining trolley, the pneumatic jacking device (21) is installed at the center of the bottom of the steel frame (20), the jacking slideway (22) comprises slideway steel plates (24) and installation chutes arranged on two inner sides of the steel frame (20), the slideway steel plates (24) are in sliding connection with the jacking chutes, the pneumatic jacking device (21) is connected with a gas compressor (13), the slideway steel plates (24) comprise an upper layer steel plate and a lower layer steel plate, the bottom end of the high-frequency vibrating rod (23) is fixed on the upper layer steel plate of the slideway steel plates (24), the top of a jacking column (25) of the pneumatic jacking device (21) is connected with the lower layer steel plate of the slideway steel plates (24), high frequency vibrating rod (23) upper portion is planted in two lining platform truck steel form (3), high frequency vibrating rod (23) top and two lining platform truck steel form (3) surface parallel and level, two lining platform truck steel form (3) and high frequency vibrating rod (23) between add and be equipped with rubber seal (26), and rubber seal (26) hug closely on high frequency vibrating rod (23), be provided with between the upper steel sheet of slide steel sheet (24) and the lower floor steel sheet and cushion rubber post (27).

8. The tunnel secondary lining concrete casting system according to claim 1, wherein: the device comprises an endoscope (29) and a transparent tube (30), wherein the transparent tube (30) is arranged on a vault waterproof plate (31) along the line direction, a probe of the endoscope (29) is arranged in the transparent tube (30), and the end of the transparent tube (30) is exposed out of the end of the two liner trolleys (7) by 20 cm.

9. The tunnel secondary lining concrete casting system according to claim 1, wherein: the pressure sensing piece (32) is installed at the vault of the two-lining trolley (7), the pressure sensing gasket (33) is installed on the geotextile (34), and the pressure sensing piece (32) and the pressure sensing gasket (33) are both connected with the electric cabinet (40).

10. The tunnel secondary lining concrete casting system according to claim 1, wherein: the vault exhaust overflow grouting device comprises comprehensive pipe reserved openings (36) formed in two lining trolley steel templates (3), the comprehensive pipe reserved openings (36) and the vault feed inlet (19) are arranged at intervals, comprehensive pipes (37) are inserted into the comprehensive pipe reserved openings (36), insertion identification lines (38) are carved at the joint of the tops of the comprehensive pipes (37) and the two lining trolley steel templates (3), exhaust overflow grouting teeth (39) are arranged at the top ends of the comprehensive pipes (37), and the exhaust overflow grouting teeth (39) are attached to the waterproof boards (31) in an abutting mode.

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