CN113847059A - Intelligent early warning type pipe jacking area pipe joint grout supplementing system and method - Google Patents
Intelligent early warning type pipe jacking area pipe joint grout supplementing system and method Download PDFInfo
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- 230000001502 supplementing effect Effects 0.000 title claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 239000010408 film Substances 0.000 claims description 54
- 238000012544 monitoring process Methods 0.000 claims description 37
- 239000004567 concrete Substances 0.000 claims description 32
- 239000010409 thin film Substances 0.000 claims description 27
- 239000002023 wood Substances 0.000 claims description 20
- 238000007569 slipcasting Methods 0.000 claims description 19
- 238000010276 construction Methods 0.000 claims description 15
- 239000002002 slurry Substances 0.000 claims description 14
- 238000012360 testing method Methods 0.000 claims description 14
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/005—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by forcing prefabricated elements through the ground, e.g. by pushing lining from an access pit
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses an intelligent early warning type pipe jacking area pipe joint grout supplementing system and method. The intelligent early warning type pipe jacking region pipe joint grout supplementing system comprises an early warning system and a grout supplementing system, wherein the early warning system comprises a plurality of film pressure sensors, a resistance voltage conversion module, a voltage data acquisition card, a network IO controller and an upper computer and is used for data acquisition, data transmission, data processing and command feedback, the grout supplementing system comprises a grout pool, a grouting main pipe, a grouting branch pipe, an electromagnetic valve and a relay, and the grout supplementing system is used for supplementing grout to region pipe joints when receiving commands of the early warning system. According to the invention, the film pressure sensors are arranged at the pipe joint interfaces to measure the frictional resistance of the pipe joints in different areas, the combination networking technology is used for receiving and analyzing data in real time, the area pipe joints exceeding the frictional resistance early warning value are identified, and command signals are fed back to the grouting pipeline electromagnetic valves of the related pipe joints, so that the automatic regional grout supplementing is realized, and the method has good application prospect and popularization value in the push pipe market.
Description
Technical Field
The invention relates to the technical field of pipe-jacking underground engineering, in particular to an intelligent early warning type pipe-jacking regional pipe joint grout supplementing system and method, which are suitable for identifying regional pipe joints with larger pipe circumference frictional resistance in circular and rectangular pipe-jacking construction and timely and automatically supplementing grout.
Background
The urban underground space is developed by adopting an open cut method, a shield method, a pipe jacking method and the like, wherein the pipe jacking method has the characteristics of small construction occupied area, small environmental effect, low cost, no obstruction to ground traffic, safety, sanitation and the like, and is widely applied to the construction of underground pipe networks and underground passages. The pipe jacking method is characterized in that a front soil body is cut by a pipe jacking tunneling machine, jacking force is applied to a pipe joint and the tunneling machine by means of a hydraulic oil cylinder and a relay jack, so that the pipe joint and the tunneling machine overcome frictional resistance with surrounding soil bodies, and finally the pipe joint is jacked into a soil layer according to a designed line. Because too big jacking force not only causes the jacking equipment cost increase, still can threaten the tube coupling structure safety, for guaranteeing the smooth jacking of tube coupling, can pour into the lubricated mud of bentonite in order to reduce frictional resistance around the tube coupling during the construction.
Pipe joints in the area of 10-20 m behind the heading machine are continuously and continuously grouted along with excavation of front soil bodies and jacking of the rear sides, namely synchronous grouting. For the pipe joints in other areas, after the mud fills the gaps around the pipe joints, the mud can be gradually dissipated to soil, so that the pressure and the volume of the mud are reduced, and therefore, a certain volume of mud can be supplemented to the periphery of the pipe joints at regular intervals, namely secondary slurry supplement. The secondary slurry supplement is very important in jacking, the untimely slurry supplement causes the steep increase of the frictional resistance and difficult jacking, the excessive slurry supplement causes the waste of slurry, and the surrounding soil body can be greatly disturbed, thereby being not beneficial to settlement control. From the experience of field construction, grout is supplemented for 1-2 times a day, 30-60 minutes each time, the randomness of manually selecting grouting amount and grouting time points is large, and full-jacking grout supplement is generally adopted instead of segmented grout supplement. According to the current research situation, as the circumferential friction of the pipe cannot be directly measured, the scholars at home and abroad respectively conduct research on the circumferential soil pressure and the friction coefficient change rule before and after grouting at present, so that the circumferential friction of the pipe is indirectly calculated, the method actually obtains the average friction of the whole jacking stroke, neglects the stress conditions and the lubricating effect difference of pipe joints at different positions, and cannot scientifically guide the secondary grouting process of the pipe joints in the construction process.
In recent years, the trend that the section size is larger and the jacking distance is longer is presented in the pipe jacking project, and whether the circumferential friction resistance of the pipe can be effectively controlled is the key for smoothly implementing the project, so that a scientific and reasonable slurry supplementing system is provided, and the scientific and reasonable slurry supplementing system has extremely important significance for promoting the development of the industry.
Disclosure of Invention
The invention aims to provide an intelligent early warning type pipe joint grout supplementing system and method for a pipe jacking region, aiming at the existing technical situation, wherein a film pressure sensor is arranged at a pipe joint interface to measure the frictional resistance of pipe joints in different regions, the data is received and analyzed in real time by combining with a networking technology, the region pipe joint exceeding the frictional resistance early warning value is identified, a command signal is fed back to a grouting pipeline electromagnetic valve of a related pipe joint, the regional automatic grout supplementing is realized, and the intelligent early warning type pipe joint grout supplementing system and method have good application prospect and popularization value in the pipe jacking market.
In order to achieve the purpose, the invention adopts the following technical scheme:
an intelligent early warning type pipe joint grout supplementing system in a pipe jacking area comprises an early warning system and a grout supplementing system;
the early warning system comprises a plurality of film pressure sensors, a resistance-to-voltage module, a voltage data acquisition card, a network IO controller and an upper computer, wherein the plurality of film pressure sensors are respectively installed in the female ends of different monitoring pipe sections, each film pressure sensor is connected with the resistance-to-voltage module through a lead, the resistance-to-voltage module, the voltage data acquisition card and the network IO controller are sequentially connected through leads, the network IO controller is in wireless connection with the upper computer, and configuration software is prepared in the upper computer;
mend the thick liquid system and include the mud pit, the slip casting is responsible for and slip casting branch pipe, solenoid valve and relay, and the slip casting is responsible for and the mud pit intercommunication, all is equipped with slip casting branch pipe, solenoid valve and relay in each tube coupling, and the slip casting branch pipe is responsible for the intercommunication with the slip casting and the battery valve sets up on the pipeline between the two, and the solenoid valve all links to each other with the relay through the wire, and the relay passes through the wire and links to each other with the network IO controller in the early warning system.
Further, the system also comprises a cloud platform server, wherein the cloud platform server is in wireless connection with the network IO controller, and remote observation of the PC end and the mobile phone end is realized through the cloud platform server.
Further, the film pressure sensor is an array multipoint type.
Further, the range of the membrane pressure sensor is greater than the maximum stress provided by a hydraulic cylinder in the originating work well.
Furthermore, rubber gaskets with the same area as the female end of each monitoring pipe joint are arranged in front of the wood base plate on which the film pressure sensor is arranged and on the front and the rear surfaces of the female end of each monitoring pipe joint.
Furthermore, the thickness of the rubber gasket is 1-2mm, and the rubber gasket is fixed on the film pressure sensor by gluing and attaching.
An intelligent early warning type pipe jacking area pipe joint grout supplementing method comprises the following steps:
s1, carrying out calibration test on the plurality of film pressure sensors to obtain a voltage-pressure calibration function file of each film pressure sensor;
s2, selecting monitoring pipe joints, attaching a calibrated film pressure sensor to a wood base plate at the female end of each monitoring pipe joint before each monitoring pipe joint is lowered to a work starting well, and enabling the film pressure sensor to cover the whole female end face;
s3, in the pipe jacking construction process, sequentially connecting the resistance-to-voltage module, the voltage data acquisition card and the network IO controller through a lead, and wirelessly connecting the network IO controller with an upper computer; after each monitoring pipe joint is lowered and completely jacked, a thin film sensor in the female end of the monitoring pipe joint is connected with a resistance voltage conversion module through a wire and is electrified to work, a resistance signal output by the thin film pressure sensor is output as a voltage analog signal through the resistance voltage conversion module and is integrated and processed by a voltage data acquisition card, and finally the voltage analog signal is transmitted to an upper computer on the ground through a network IO controller; after each pipe joint is lowered and completely jacked, a main valve of the main grouting pipe is closed, a branch grouting pipe is installed in each pipe joint and communicated with the main grouting pipe, meanwhile, an electromagnetic valve is installed between the main grouting pipe and the branch grouting pipe, and a battery valve, a relay and a network IO controller are sequentially connected through a wire;
s4, calling a calibration function file of each film pressure sensor in the upper computer, converting the voltage analog signal into a pressure value, wherein the difference between the pressures measured by the film pressure sensors in the two monitoring pipe joints is the frictional resistance of the pipe joint in the area between the two monitoring pipe joints, and displaying the frictional resistance on the interface of the upper computer in real time;
s5, setting a pipe circumference frictional resistance early warning value in configuration software of the upper computer as a triggering condition for DO output of the network IO controller, when the actually measured frictional resistance is larger than the value, the configuration software automatically sends a control signal to the network IO controller, and triggers a relay to be electrified to open electromagnetic valves of all grouting branch pipes in the pipe joints in the area, so that automatic grouting of the pipe joints in the area is realized, and the electromagnetic valves are closed when the actually measured frictional resistance is smaller than the early warning value, and grouting is stopped when the relay is powered off.
Further, the calibration test is carried out based on the vertical loading instrument, a tension pressure sensor arranged on the vertical loading instrument, and a resistance-to-voltage conversion module, a voltage data acquisition card and an upper computer which are sequentially connected through a lead, and the calibration test comprises the following steps:
s1.1, manufacturing two concrete bottom plates, wherein the cement for manufacturing the concrete bottom plates is the same as the cement for manufacturing pipe joints used for pipe jacking engineering, the area of each concrete bottom plate is consistent with that of a thin film pressure sensor to be calibrated, and the thickness of each concrete bottom plate is larger than 10 cm;
s1.2, selecting one wood base plate for the pipe jacking project, wherein the area of the wood base plate is consistent with that of the thin film pressure sensor to be calibrated;
s1.3, selecting two rubber base plates, wherein the area of each rubber base plate is consistent with that of a thin film pressure sensor to be calibrated, and the thickness of each rubber base plate is 1-2 mm;
s1.4, placing a concrete slab bottom plate on a flat desktop, then sequentially placing a rubber pad, a thin film pressure sensor, another rubber pad and a wood base plate on the concrete bottom plate, and finally placing another concrete bottom plate, wherein the concrete slab bottom plate, the rubber pad, the thin film pressure sensor and the wood base plate are all level, and the thin film pressure sensor to be calibrated is connected with a resistance-to-voltage conversion module through a lead;
s1.5, applying a rated load to the position right above the concrete bottom plate by using a vertical loader, and controlling the load by using a tension pressure sensor on the vertical loader, wherein the initial load is a pressure value corresponding to the maximum measuring range of the film pressure sensor;
s1.6, observing an output value of the upper computer after a rated load is applied, and reading a corresponding voltage value when the output value is basically stable to obtain a voltage value of the film pressure sensor under the clamping of the concrete bottom plate at the rated load;
s1.7, carrying out graded load reduction to the next rated load, and repeating the step S1.6;
and S1.8, after the load is reduced to 0N, storing and fitting the calibration data, and storing the calibration data as a voltage-pressure calibration function file.
Further, in step S1.7, the load shedding amplitude should be less than 0.2 times the initial load to obtain more fitting points.
Further, after the calibration test is completed, the two rubber base plates are attached and fixed to the front face and the rear face of the film pressure sensor in a flush mode.
The invention has the beneficial effects that:
1. the problem that the friction resistance around the pipe cannot be directly measured is solved. The method for measuring the differential jacking force to further obtain the circumferential friction resistance of the pipe is conceivable by installing a steel bar strain gauge in a steel bar cage or installing an optical fiber strain sensor on the inner wall of the pipe section in the axial direction when the pipe section is poured, but the former method of presetting the steel bar strain gauge in the pipe measures the internal structural deformation and the internal force of the pipe section, and the latter method measures the structural strain on the surface of the inner wall of the pipe section. The two methods face two problems, firstly, the stress path of the sensor is not consistent with the actual transmission path of the jacking force, secondly, the elastic modulus of the reinforced concrete pipe joint cannot be known, and the elastic modulus of different deformation stages under the action of pressure is continuously changed, so that the elastic modulus cannot be converted into stress, and the two methods can still be considered as methods for indirectly measuring the frictional resistance. The film pressure sensor has the characteristics of small thickness, dense distribution and high precision, and because all pipe joints transmit the jacking force of the hydraulic oil cylinder through the front bell and spigot and the rear bell and spigot, the film pressure sensor is arranged on the pressure-bearing end surface, so that the direct measurement of the peripheral frictional resistance of the regional pipe is realized for the first time, and the interference of other variables (elastic modulus, instrument installation deviation, force transmission path and the like) is eliminated;
2. the wireless data transmission is realized, and the management condition is monitored in real time. In the prior geotechnical engineering monitoring means, after all data are collected, the data are led out to a PC (personal computer) end for post-processing, the Internet of things cloud platform technology is adopted, digital signals are directly sent to a ground PC end and a mobile phone end, an operator can monitor the change of the frictional resistance in real time without entering a pipe in the jacking process, and an electromagnetic valve of a grouting pipeline is triggered when a set frictional resistance early warning value is exceeded, so that timely automatic grouting is realized, the construction monitoring efficiency is improved, and the safety is ensured;
3. the high-friction area pipe joint is intelligently identified, and automatic area slurry replenishing is carried out in time. The slurry is supplemented only on the high-friction pipe joint in a targeted manner, so that on one hand, the slurry is saved, the sedimentation is controlled, and on the other hand, the phenomena of steep increase of the jacking force and pipe clamping caused by the friction can be effectively avoided in time.
Drawings
FIG. 1 is a schematic view of a connection structure of an intelligent early warning type pipe jacking area pipe joint grout supplementing system of the invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view showing the connection structure of the apparatus and the components used in the calibration test of the present invention.
Description of the labeling: 1. the pipe jacking tunneling machine comprises a pipe jacking heading machine body 2, a monitoring pipe joint 3, a resistance voltage conversion module 4, a voltage data acquisition card 5, a network IO controller 6, a relay 7, an electromagnetic valve 8, a grouting main pipe 9, a grouting port 10, a mud pit 11, an upper machine 12, a socket end 13, a socket end 14, a rubber gasket 15, a film pressure sensor 16, a wood base plate 17, a hydraulic oil cylinder 18, a grouting branch pipe 19, a vertical loading instrument 20, a tensioning pressure sensor 21 and a concrete bottom plate.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1-2, an intelligent early warning type pipe jacking area pipe joint grout supplementing system includes an early warning system and a grout supplementing system.
The early warning system comprises a plurality of film pressure sensors 15, a resistance voltage conversion module 3, a voltage data acquisition card 4, a network IO controller 5 and an upper computer 11, wherein the film pressure sensors 15 are respectively installed in the female ends 12 of different monitoring pipe joints 2, each film pressure sensor 15 is connected with the resistance voltage conversion module 3 through a lead, the resistance voltage conversion module 3, the voltage data acquisition card 4 and the network IO controller 5 are sequentially connected through leads, the network IO controller 5 is in wireless connection with the upper computer 11, and configuration software is arranged in the upper computer 11.
Mend the thick liquid system and include mud pit 10, the slip casting is responsible for 8 and slip casting branch pipe 18, solenoid valve 7 and relay 6, the slip casting is responsible for 8 and mud pit 10 intercommunication, all be equipped with slip casting branch pipe 18 in each tube coupling, solenoid valve 7 and relay 6, slip casting branch pipe 18 is responsible for 8 intercommunications and battery valve 7 sets up on the pipeline between the two with the slip casting, control all slip casting mouths 9 on the branch pipe 18 through solenoid valve 7, solenoid valve 7 all links to each other with relay 6 through the wire, relay 6 passes through the wire and links to each other with network IO controller 5 in the early warning system.
The film pressure sensor 15 is an array multi-point type, that is, a plurality of pressure sensing points are contained in a film with a certain area. The voltage-pressure calibration functions of the different membrane pressure sensors 15 are obtained by calibration tests.
The measuring range of the film pressure sensor 15 is larger than the maximum stress provided by the hydraulic oil cylinder 17 in the starting working well, and the measuring range is determined according to actual conditions when the measuring range is selected due to the difference of pipe joint sizes of different pipe-jacking projects.
The film pressure sensor 15 is arranged in the female end 12 of the monitoring pipe joint 2, and in the pipe jacking construction process (the pipe jacking heading machine 1 and the hydraulic oil cylinder 17 are in matched construction), the film pressure sensor 15 generates resistance change due to the jacking force of the next pipe joint.
Among the female end 12 of different monitoring pipe joints 2, in front of the wooden backing plate 16 that film pressure sensor 15 installed, and its front and back two sides all are equipped with rubber gasket 14 of the same area rather than, its purpose is for guaranteeing that all sensor induction points can contact with female end 12 of monitoring pipe joint 2 and the spigot end 13 of the back pipe joint simultaneously, prevents to appear the space or local unevenness and contact failure because of the socket joint part, leads to unable acquisition whole terminal surface transmitted thrust. The thickness of the rubber gasket 14 is 1-2mm, and the rubber gasket 14 is fixed on the film pressure sensor 15 by gluing.
In this embodiment, the rubber gasket 14 is fixed on the film pressure sensor 15 by using epoxy resin glue or glass glue.
The monitoring pipe joints 2 are selected according to the actual conditions of the pipe jacking project, all pipe joints used in the pipe jacking project can be used as the monitoring pipe joints 2 under ideal conditions, but a plurality of monitoring pipe joints 2 are arranged as far as possible when the jacking distance is long, the circumferential friction resistance of the pipes of the regional pipe joints is measured more accurately, and the monitoring pipe joints 2 can be properly reduced when the jacking distance is short.
The network IO controller 5 needs to support Analog Input and Digital Output, the number of Input and Output interfaces is consistent, the most available RTUs in the market can reach 8AI interfaces (Analog Input) +8DO interfaces (Digital Output), and a slurry supplementing system with 8 grouting branch pipes 18 can be built.
In this embodiment, the network IO controller 5 is a 4G network IO controller.
The network IO controller 5 calls for debugging: and (3) inserting a 4G Internet of things card, switching on configuration software for equipment configuration on the upper computer 11 after the power is switched on, and setting a DO trigger threshold value after call connection.
The upper computer 11 should have real-time continuous working performance, and the characteristics of long-time construction and uninterrupted midway of the jacking pipe are considered, so that a computer workstation is not suitable for being adopted. The configuration software includes the following functions: and reading and writing and storing the voltage analog quantity signals transmitted by the network IO controller 5, performing digital fitting operation based on a voltage-pressure calibration function to obtain the friction resistance of the regional pipe joints, returning the friction resistance to the interface of the regional pipe joints, and sending a logic instruction.
According to the technical scheme, the system further comprises a cloud platform server, the cloud platform server is in wireless connection with the network IO controller 5, and remote observation of the PC end and the mobile phone end is achieved through the cloud platform server.
It should be noted that the power of the lower pipe joint is usually cut off for 30-60 min, in order to ensure that data is continuously collected when the power is cut off, a lithium battery is adopted to continuously supply power to the film pressure sensor 15, the resistance voltage conversion module 3, the voltage data acquisition card 4, the network IO controller 5 and the relay 6, and the lithium battery is externally connected with a three-stage transformer box for charging.
Referring to fig. 1-3, based on the above system, an intelligent early warning type pipe jacking area pipe joint grout supplementing method includes the following steps:
s1, carrying out calibration test on the plurality of film pressure sensors 15 to obtain a voltage-pressure calibration function file of each film pressure sensor 15;
the calibration test is carried out on the basis of the vertical loading instrument 19, the tension pressure sensor 20 arranged on the vertical loading instrument 19, and the resistance-to-voltage conversion module 3, the voltage data acquisition card 4 and the upper computer 11 which are sequentially connected through the leads, and the calibration test comprises the following steps:
s1.1, manufacturing two concrete bottom plates 21, wherein the cement for manufacturing the concrete bottom plates 21 is the same as the cement for manufacturing pipe joints used for pipe jacking engineering, the area of the concrete bottom plates 21 is consistent with that of the thin film pressure sensor 15 to be calibrated, and the thickness of the concrete bottom plates 21 is larger than 10 cm; generally, the strength of the cast concrete pipe joint is C50;
s1.2, selecting one wood base plate 16 for the pipe jacking project, wherein the area of the wood base plate 16 is consistent with that of the thin film pressure sensor 15 to be calibrated; generally, the wood base plate 16 used in the pipe jacking construction site is a three-ply board;
s1.3, selecting two rubber backing plates 14, wherein the area of each rubber backing plate 14 is consistent with that of a film pressure sensor 15 to be calibrated, and the thickness of each rubber backing plate 14 is 1-2 mm;
s1.4, placing a concrete slab bottom plate 21 on a flat desktop, then sequentially placing a rubber pad 14, a thin film pressure sensor 15, another rubber pad 14 and a wood base plate 16 on the concrete bottom plate 21, finally placing another concrete bottom plate 21, wherein the concrete slab bottom plate 21, the rubber pad 14, the thin film pressure sensor 15 and the wood base plate 16 are all level, and connecting the thin film pressure sensor 15 to be calibrated with the resistance voltage conversion module 3 through a lead;
s1.5, applying a rated load to the position right above a concrete bottom plate 21 by using a vertical loader 19, and controlling the load by using a tension pressure sensor 20 on the vertical loader 19, wherein the initial load is a pressure value corresponding to the maximum measuring range of a film pressure sensor 15;
s1.6, observing an output value of the upper computer 11 after a rated load is applied, and reading a corresponding voltage value when the output value is basically stable to obtain a voltage value of the thin film pressure sensor 15 under the clamping of the concrete bottom plate 21 at the rated load; generally, a voltage value is read after a rated load is applied for 30S;
s1.7, carrying out graded load reduction to the next rated load, wherein the load reduction amplitude is smaller than 0.2 time of the initial load to obtain more fitting points, and repeating the step S1.6;
and S1.8, after the load is reduced to 0N, storing and fitting the calibration data, and storing the calibration data as a voltage-pressure calibration function file.
After the calibration test is finished, attaching and fixing the two rubber backing plates 14 to the front and back surfaces of the film pressure sensor 15 in a flush manner;
s2, selecting monitoring pipe joints 2, attaching a calibrated film pressure sensor 15 to a wood base plate 16 of a female end 12 of each monitoring pipe joint 2 before each monitoring pipe joint 2 is lowered to a work starting well, and enabling the film pressure sensor 15 to cover the whole end face of the female end 12;
s3, in the pipe jacking construction process, sequentially connecting the resistance-to-voltage conversion module 3, the voltage data acquisition card 4 and the AI interface of the network IO controller 5 through leads, and wirelessly connecting the network IO controller 5 with the upper computer 11; after each monitoring pipe joint 2 is lowered and completely jacked, a thin film sensor 15 in a female end 12 of the monitoring pipe joint 2 is connected with a resistance voltage conversion module 3 through a wire and is electrified to work, a resistance signal output by the thin film pressure sensor 15 is output as a voltage analog signal through the resistance voltage conversion module 3 and is integrated and processed by a voltage data acquisition card 4, and finally the voltage analog signal is transmitted to an upper computer 11 on the ground through a network IO controller 5 (the network IO controller 5 and the upper computer 11 establish communication through configuration of a modbus RTU protocol); after each pipe joint is lowered and completely jacked, the main valve of the grouting main pipe 8 is closed, a grouting branch pipe 18 is installed in each pipe joint and communicated with the grouting main pipe 8, meanwhile, an electromagnetic valve 7 is installed between the grouting main pipe 8 and the grouting branch pipe 18, and a battery valve 7, a relay 6 and a DO (data only) interface of the network IO (input/output) controller 5 are sequentially connected through a wire;
s4, calling a calibration function file of each film pressure sensor 15 in the upper computer 11, converting the voltage analog signal into a pressure value, wherein the difference between the pressures measured by the film pressure sensors 15 in the two monitoring pipe joints 2 is the frictional resistance of the pipe joint in the area between the two monitoring pipe joints 2, and displaying the frictional resistance on the interface of the upper computer 11 in real time;
s5, setting a pipe circumferential frictional resistance early warning value in configuration software of the upper computer 11 as a triggering condition for DO output of the network IO controller 5, when the actually measured frictional resistance is larger than the value, the configuration software automatically sends a control signal to the network IO controller 5, and triggers the relay 6 to be electrified to open the electromagnetic valves 7 of all grouting branch pipes 18 in the pipe joints in the area, so that automatic grouting of the pipe joints in the area is realized, and the relay 6 is powered off to close the electromagnetic valves 7 until the actually measured frictional resistance is smaller than the early warning value, and grouting is stopped.
The early warning value of the friction resistance around the pipe is selected according to the following table:
the method is suitable for identifying the pipe joints in the area with larger pipe circumference friction resistance in circular and rectangular pipe jacking construction, automatically and timely replenishing slurry, and has good application prospect in high-difficulty pipe jacking projects such as stratum with easy slurry leakage, large section, long distance and the like.
It should be understood that the above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the invention, therefore, all equivalent changes in the principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an intelligence early warning formula push pipe regional tube coupling mends thick liquid system which characterized in that: the system comprises an early warning system and a slurry supplementing system;
the early warning system comprises a plurality of film pressure sensors, a resistance-to-voltage module, a voltage data acquisition card, a network IO controller and an upper computer, wherein the plurality of film pressure sensors are respectively installed in the female ends of different monitoring pipe sections, each film pressure sensor is connected with the resistance-to-voltage module through a lead, the resistance-to-voltage module, the voltage data acquisition card and the network IO controller are sequentially connected through leads, the network IO controller is in wireless connection with the upper computer, and configuration software is prepared in the upper computer;
mend the thick liquid system and include the mud pit, the slip casting is responsible for and slip casting branch pipe, solenoid valve and relay, and the slip casting is responsible for and the mud pit intercommunication, all is equipped with slip casting branch pipe, solenoid valve and relay in each tube coupling, and the slip casting branch pipe is responsible for the intercommunication with the slip casting and the battery valve sets up on the pipeline between the two, and the solenoid valve all links to each other with the relay through the wire, and the relay passes through the wire and links to each other with the network IO controller in the early warning system.
2. The intelligent early warning type pipe jacking area pipe joint grout supplementing system according to claim 1, which is characterized in that: the cloud platform server is in wireless connection with the network IO controller, and remote observation of the PC end and the mobile phone end is achieved through the cloud platform server.
3. The intelligent early warning type pipe jacking area pipe joint grout supplementing system according to claim 1, which is characterized in that: the thin film pressure sensor is in an array multi-point mode.
4. The intelligent early warning type pipe jacking area pipe joint grout supplementing system according to claim 3, characterized in that: the range of the film pressure sensor is larger than the maximum stress provided by a hydraulic oil cylinder in the originating work well.
5. The intelligent early warning type pipe jacking area pipe joint grout supplementing system according to claim 1, which is characterized in that: in the female ends of different monitoring pipe joints, rubber gaskets with the same area as the thin film pressure sensor are arranged in front of the wood base plate on which the thin film pressure sensor is arranged and on the front and the back of the wood base plate.
6. The intelligent early warning type pipe jacking area pipe joint grout supplementing system according to claim 5, characterized in that: the thickness of the rubber gasket is 1-2mm, and the rubber gasket is fixed on the film pressure sensor in a gluing and attaching mode.
7. An intelligent early warning type pipe jacking area pipe joint grout supplementing method is characterized by comprising the following steps: the method comprises the following steps:
s1, carrying out calibration test on the plurality of film pressure sensors to obtain a voltage-pressure calibration function file of each film pressure sensor;
s2, selecting monitoring pipe joints, attaching a calibrated film pressure sensor to a wood base plate at the female end of each monitoring pipe joint before each monitoring pipe joint is lowered to a work starting well, and enabling the film pressure sensor to cover the whole female end face;
s3, in the pipe jacking construction process, sequentially connecting the resistance-to-voltage module, the voltage data acquisition card and the network IO controller through a lead, and wirelessly connecting the network IO controller with an upper computer; after each monitoring pipe joint is lowered and completely jacked, a thin film sensor in the female end of the monitoring pipe joint is connected with a resistance voltage conversion module through a wire and is electrified to work, a resistance signal output by the thin film pressure sensor is output as a voltage analog signal through the resistance voltage conversion module and is integrated and processed by a voltage data acquisition card, and finally the voltage analog signal is transmitted to an upper computer on the ground through a network IO controller; after each pipe joint is lowered and completely jacked, a main valve of the main grouting pipe is closed, a branch grouting pipe is installed in each pipe joint and communicated with the main grouting pipe, meanwhile, an electromagnetic valve is installed between the main grouting pipe and the branch grouting pipe, and a battery valve, a relay and a network IO controller are sequentially connected through a wire;
s4, calling a calibration function file of each film pressure sensor in the upper computer, converting the voltage analog signal into a pressure value, wherein the difference between the pressures measured by the film pressure sensors in the two monitoring pipe joints is the frictional resistance of the pipe joint in the area between the two monitoring pipe joints, and displaying the frictional resistance on the interface of the upper computer in real time;
s5, setting a pipe circumference frictional resistance early warning value in configuration software of the upper computer as a triggering condition for DO output of the network IO controller, when the actually measured frictional resistance is larger than the value, the configuration software automatically sends a control signal to the network IO controller, and triggers a relay to be electrified to open electromagnetic valves of all grouting branch pipes in the pipe joints in the area, so that automatic grouting of the pipe joints in the area is realized, and the electromagnetic valves are closed when the actually measured frictional resistance is smaller than the early warning value, and grouting is stopped when the relay is powered off.
8. The intelligent early warning type pipe jacking area pipe joint grout supplementing method according to claim 7, which is characterized in that: the calibration test is carried out on the basis of a vertical loading instrument, a tension pressure sensor arranged on the vertical loading instrument, and a resistance-to-voltage conversion module, a voltage data acquisition card and an upper computer which are sequentially connected through a lead, and the calibration test comprises the following steps:
s1.1, manufacturing two concrete bottom plates, wherein the cement for manufacturing the concrete bottom plates is the same as the cement for manufacturing pipe joints used for pipe jacking engineering, the area of each concrete bottom plate is consistent with that of a thin film pressure sensor to be calibrated, and the thickness of each concrete bottom plate is larger than 10 cm;
s1.2, selecting one wood base plate for the pipe jacking project, wherein the area of the wood base plate is consistent with that of the thin film pressure sensor to be calibrated;
s1.3, selecting two rubber base plates, wherein the area of each rubber base plate is consistent with that of a thin film pressure sensor to be calibrated, and the thickness of each rubber base plate is 1-2 mm;
s1.4, placing a concrete slab bottom plate on a flat desktop, then sequentially placing a rubber pad, a thin film pressure sensor, another rubber pad and a wood base plate on the concrete bottom plate, and finally placing another concrete bottom plate, wherein the concrete slab bottom plate, the rubber pad, the thin film pressure sensor and the wood base plate are all level, and the thin film pressure sensor to be calibrated is connected with a resistance-to-voltage conversion module through a lead;
s1.5, applying a rated load to the position right above the concrete bottom plate by using a vertical loader, and controlling the load by using a tension pressure sensor on the vertical loader, wherein the initial load is a pressure value corresponding to the maximum measuring range of the film pressure sensor;
s1.6, observing an output value of the upper computer after a rated load is applied, and reading a corresponding voltage value when the output value is basically stable to obtain a voltage value of the film pressure sensor under the clamping of the concrete bottom plate at the rated load;
s1.7, carrying out graded load reduction to the next rated load, and repeating the step S1.6;
and S1.8, after the load is reduced to 0N, storing and fitting the calibration data, and storing the calibration data as a voltage-pressure calibration function file.
9. The intelligent early warning type pipe jacking area pipe joint grout supplementing method according to claim 8, which is characterized in that: in step S1.7, the load shedding amplitude should be less than 0.2 times the initial load to get more fitting points.
10. The intelligent early warning type pipe jacking area pipe joint grout supplementing method according to claim 8, which is characterized in that: after the calibration test is finished, two rubber base plates are attached and fixed to the front face and the rear face of the film pressure sensor in a flush mode.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486028A (en) * | 2022-01-28 | 2022-05-13 | 中国地质大学（武汉） | Multi-data-based real-time monitoring and regulating method for jacking force of jacking pipe |
| CN114658920A (en) * | 2022-05-10 | 2022-06-24 | 天元建设集团有限公司 | Auxiliary grouting device and method for pipe jacking construction and storage medium |
| CN115598007A (en) * | 2022-10-27 | 2023-01-13 | 中钢集团郑州金属制品研究院股份有限公司（Cn） | Prestressed corrugated pipe grouting quality detection device and detection method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331967A (en) * | 2018-03-14 | 2018-07-27 | 安徽路鼎科技股份有限公司 | Automatic constant pressure filling system |
| CN209727321U (en) * | 2019-04-22 | 2019-12-03 | 中铁上海工程局集团有限公司 | A kind of jacking pipe joints installation monitoring device based on BIM technology |
| CN211738213U (en) * | 2019-12-03 | 2020-10-23 | 中国水利水电第七工程局有限公司 | Automatic pipe jacking grouting pressure adjusting system |
| CN111914373A (en) * | 2020-08-21 | 2020-11-10 | 重庆大学 | Long-distance rock jacking pipe frictional resistance calculation method and pipe rock contact state detection method |
| CN111946356A (en) * | 2020-08-24 | 2020-11-17 | 中铁十八局集团有限公司 | Ultra-long distance hard rock pipe jacking construction method |
| CN112901178A (en) * | 2021-01-18 | 2021-06-04 | 中铁上海工程局集团第五工程有限公司 | Thixotropic slurry anti-drag grouting system and grouting method for medium-long distance oversized-diameter jacking pipe |
-
2021
- 2021-08-24 CN CN202110975185.8A patent/CN113847059B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331967A (en) * | 2018-03-14 | 2018-07-27 | 安徽路鼎科技股份有限公司 | Automatic constant pressure filling system |
| CN209727321U (en) * | 2019-04-22 | 2019-12-03 | 中铁上海工程局集团有限公司 | A kind of jacking pipe joints installation monitoring device based on BIM technology |
| CN211738213U (en) * | 2019-12-03 | 2020-10-23 | 中国水利水电第七工程局有限公司 | Automatic pipe jacking grouting pressure adjusting system |
| CN111914373A (en) * | 2020-08-21 | 2020-11-10 | 重庆大学 | Long-distance rock jacking pipe frictional resistance calculation method and pipe rock contact state detection method |
| CN111946356A (en) * | 2020-08-24 | 2020-11-17 | 中铁十八局集团有限公司 | Ultra-long distance hard rock pipe jacking construction method |
| CN112901178A (en) * | 2021-01-18 | 2021-06-04 | 中铁上海工程局集团第五工程有限公司 | Thixotropic slurry anti-drag grouting system and grouting method for medium-long distance oversized-diameter jacking pipe |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486028A (en) * | 2022-01-28 | 2022-05-13 | 中国地质大学（武汉） | Multi-data-based real-time monitoring and regulating method for jacking force of jacking pipe |
| CN114658920A (en) * | 2022-05-10 | 2022-06-24 | 天元建设集团有限公司 | Auxiliary grouting device and method for pipe jacking construction and storage medium |
| CN114658920B (en) * | 2022-05-10 | 2023-10-27 | 天元建设集团有限公司 | Auxiliary grouting device and method for pipe jacking construction and storage medium |
| CN115598007A (en) * | 2022-10-27 | 2023-01-13 | 中钢集团郑州金属制品研究院股份有限公司（Cn） | Prestressed corrugated pipe grouting quality detection device and detection method |
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