A method, system, terminal and storage medium for detecting drag-reducing mud around a jacking pipe

Abstract

The present application discloses a method, system, terminal and storage medium for detecting drag reduction mud around a top pipe, the method comprising: obtaining the spatial coordinates of a plurality of drag reduction mud detection devices; obtaining the pressure data of the drag reduction mud around the pipe collected by the plurality of drag reduction mud detection devices; obtaining the characteristic points of the penetration resistance of the mud casing and the characteristic points of the penetration resistance of the formation, and calculating the thickness of the drag reduction mud and the thickness of the mud casing corresponding to each of the plurality of drag reduction mud detection devices according to the characteristic points of the penetration resistance of the mud casing and the characteristic points of the penetration resistance of the formation; generating a three-dimensional spatial distribution cloud map of the drag reduction mud around the top pipe according to the spatial coordinates, pressure data, the thickness of the plurality of drag reduction mud and the thickness of the plurality of mud casings. The present application can accurately detect the pressure and thickness of the drag reduction mud around the top pipe at a low cost, thereby obtaining the accurate temporal and spatial distribution law of the drag reduction mud around the pipe, and further providing guidance for the grouting of the drag reduction mud during the top pipe construction.

Description

Technical Field

[0001] The present application relates to the technical field of tunnels and underground engineering, and in particular to a method, system, terminal and storage medium for detecting drag-reducing mud around a jacking pipe. Background Art

[0002] With the development of pipe jacking technology, the cross-section of pipe jacking is getting larger and larger, and the jacking distance is getting longer and longer. The jacking resistance between the large-section pipe jacking pipe and the drag-reducing mud and soil has become the key to restricting its long-distance jacking. At the same time, the reduction of resistance between the pipe and the soil is conducive to reducing the disturbance of the stratum and adjacent structures caused by pipe jacking construction. However, since the pressure and thickness of the drag-reducing mud around the large-section pipe jacking are difficult to accurately detect at low cost, the temporal and spatial distribution law of the drag-reducing mud around the pipe is unclear. During construction, grouting is often performed based on the experience of the operator, and an effective lubricating mud sleeve is often unable to be formed around the pipe, which greatly increases the jacking resistance and the disturbance of the stratum environment.

[0003] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0004] The main purpose of the present application is to provide a method, system, terminal and storage medium for detecting drag-reducing mud around a jacking pipe, aiming to solve the problem in the prior art that the pressure and thickness of the drag-reducing mud around a large-section jacking pipe are difficult to accurately detect at low cost, resulting in unclear temporal and spatial distribution patterns of the drag-reducing mud around the pipe, which easily leads to the inability to form an effective lubricating mud sleeve around the pipe after grouting.

[0005] A first aspect of an embodiment of the present application provides a method for detecting drag-reducing mud around a jacking pipe, the method comprising the following steps: after a plurality of drag-reducing mud detection devices are installed on the inner wall of a jacking pipe section, obtaining the spatial coordinates of the plurality of drag-reducing mud detection devices; obtaining pressure data of the drag-reducing mud around the pipe collected by the plurality of drag-reducing mud detection devices during the jacking of the pipe and the mud injection process; obtaining mud casing penetration resistance characteristic points and formation penetration resistance characteristic points, and calculating the drag-reducing mud thickness and mud casing thickness corresponding to each of the plurality of drag-reducing mud detection devices according to the mud casing penetration resistance characteristic points and the formation penetration resistance characteristic points during the jacking construction process; generating a three-dimensional spatial distribution cloud map of the drag-reducing mud around the jacking pipe according to the spatial coordinates, the pressure data, the plurality of drag-reducing mud thicknesses and the plurality of mud casing thicknesses, so as to provide guidance for the grouting of the drag-reducing mud during the jacking construction.

[0006] Optionally, in one embodiment of the present application, the spatial coordinates are spatial positions in a three-dimensional rectangular coordinate system; after the multiple drag reduction mud detection devices are installed on the inner wall of the top pipe section, the spatial coordinates of the multiple drag reduction mud detection devices are obtained, specifically: the drag reduction mud detection device is passed through the mud replacement steel pipe around the top pipe section, fixedly installed on the inner wall of the top pipe section, and after the top pipe section is hoisted to the starting well, the corresponding spatial positions of the multiple drag reduction mud detection devices in the three-dimensional rectangular coordinate system are collected.

[0007] Optionally, in one embodiment of the present application, each of the drag reduction mud detection devices includes a telescopic rod and a soil pressure sensor, the end of the telescopic rod is connected to the soil pressure sensor, and in the initial state, the telescopic rod makes the soil pressure sensor located on the inner side of the outer wall of the top pipe section; the pressure data of the drag reduction mud around the pipe collected by the multiple drag reduction mud detection devices is obtained, specifically: the pressure data of the drag reduction mud around the pipe collected by the multiple soil pressure sensors are obtained at preset time intervals.

[0008] Optionally, in one embodiment of the present application, the obtaining of the characteristic points of the mud casing penetration resistance and the formation penetration resistance specifically includes: conducting a drag reduction mud penetration test on the construction soil sample, controlling the extension of the telescopic rod so that the soil pressure sensor contacts the drag reduction mud, the mud casing and the soil layer around the pipe, and obtaining a penetration resistance stroke curve; and determining the characteristic points of the mud casing penetration resistance and the formation penetration resistance according to the penetration resistance stroke curve.

[0009] Optionally, in one embodiment of the present application, the drag reduction mud thickness and mud jacket thickness corresponding to each of the multiple drag reduction mud detection devices are calculated based on the mud jacket penetration resistance characteristic points and the formation penetration resistance characteristic points, specifically including: obtaining the first stroke value and the second stroke value corresponding to each of the multiple drag reduction mud detection devices based on the mud jacket penetration resistance characteristic points and the formation penetration resistance characteristic points; taking each of the first stroke values ​​as the drag reduction mud thickness of the corresponding drag reduction mud detection device, and taking the difference between each of the second stroke values ​​and the corresponding first stroke values ​​as the mud jacket thickness measured by the corresponding drag reduction mud detection device.

[0010] Optionally, in one embodiment of the present application, the first stroke value and the second stroke value corresponding to each of the multiple drag reducing mud detection devices are obtained according to the mud casing penetration resistance characteristic point and the formation penetration resistance characteristic point, specifically including: for each of the drag reducing mud detection devices, according to the mud casing penetration resistance characteristic point, obtaining the first stroke value of the telescopic rod extending so that the soil pressure sensor contacts the mud casing; for each of the drag reducing mud detection devices, according to the formation penetration resistance characteristic point, obtaining the second stroke value of the telescopic rod extending so that the soil pressure sensor contacts the soil layer.

[0011] Optionally, in one embodiment of the present application, the three-dimensional spatial distribution cloud map includes a pressure distribution map and a thickness distribution map; the three-dimensional spatial distribution cloud map of the drag reducing mud around the jacking pipe is generated according to the spatial coordinates, the pressure data, multiple thicknesses of the drag reducing mud and multiple thicknesses of the mud sleeves to provide guidance for the grouting of the drag reducing mud during the jacking construction, specifically including: generating a pressure distribution map of the drag reducing mud around the jacking pipe according to the spatial coordinates and the pressure data to provide guidance for adjusting the grouting pressure value of the drag reducing mud during the jacking construction; generating a thickness distribution map of the drag reducing mud around the jacking pipe according to multiple thicknesses of the drag reducing mud and the corresponding multiple thicknesses of the mud sleeves to provide guidance for adjusting the grouting amount of the drag reducing mud during the jacking construction.

[0012] The second aspect of the embodiment of the present application further provides a system for detecting drag reduction mud around a top pipe, wherein the system for detecting drag reduction mud around a top pipe comprises:

[0013] A coordinate acquisition module, used to acquire the spatial coordinates of the plurality of drag reduction mud detection devices after the plurality of drag reduction mud detection devices are installed on the inner wall of the top pipe section;

[0014] A pressure acquisition module, used to acquire the pressure data of the drag reduction mud around the pipe collected by the plurality of drag reduction mud detection devices during the process of pipe jacking and mud injection;

[0015] A thickness calculation module, used to obtain the mud casing penetration resistance characteristic points and the formation penetration resistance characteristic points, and calculate the drag reduction mud thickness and mud casing thickness corresponding to each of the plurality of drag reduction mud detection devices according to the mud casing penetration resistance characteristic points and the formation penetration resistance characteristic points during the pipe jacking construction process;

[0016] The cloud map generation module is used to generate a three-dimensional spatial distribution cloud map of the drag reducing mud around the jacking pipe according to the spatial coordinates, the pressure data, multiple drag reducing mud thicknesses and multiple mud sleeve thicknesses, so as to provide guidance for the grouting of the drag reducing mud during the jacking construction.

[0017] The third aspect of the embodiment of the present application also provides a terminal, wherein the terminal includes: a memory, a processor, and a drag reduction mud detection program around the top pipe stored in the memory and executable on the processor, wherein the drag reduction mud detection program around the top pipe implements the steps of the drag reduction mud detection method around the top pipe as described above when executed by the processor.

[0018] A fourth aspect of an embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a program for detecting drag reduction mud around a jacking pipe, and when the program for detecting drag reduction mud around a jacking pipe is executed by a processor, the steps of the method for detecting drag reduction mud around a jacking pipe as described above are implemented.

[0019] Beneficial effect: The present application provides a method, system, terminal and storage medium for detecting drag reducing mud around a jacking pipe. The present application generates a three-dimensional spatial distribution cloud map of the drag reducing mud around a jacking pipe (including a circumferential mud pressure distribution map and a circumferential mud thickness distribution map) through the spatial coordinates of multiple drag reducing mud detection devices, the pressure data collected by the multiple drag reducing mud detection devices, and the drag reducing mud thickness and mud sleeve thickness corresponding to each of the multiple drag reducing mud detection devices, thereby achieving the purpose of accurately detecting the pressure and thickness of the drag reducing mud around the jacking pipe at a low cost, thereby obtaining an accurate spatiotemporal distribution law of the surrounding drag reducing mud, and further providing guidance for grouting of the drag reducing mud during jacking construction, so that an effective lubricating mud sleeve can be formed around the pipe after grouting, thereby reducing the jacking resistance and formation environment disturbance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a functional schematic diagram of a preferred embodiment of the drag reduction mud detection device of the present application;

[0022] Figure 2 The module and function diagram of the drag reduction mud detection device for this application;

[0023] Figure 3 It is a flow chart of a preferred embodiment of the method for detecting drag reduction mud around a jacking pipe of the present application;

[0024] Figure 4 This is a schematic diagram of the use of the rectangular jacking pipe surrounding mud detection device of the present application;

[0025] Figure 5 This is a schematic diagram of the use of the circular jacking pipe surrounding mud detection device of the present application;

[0026] Figure 6 It is a penetration resistance-stroke curve in a preferred embodiment of the method for detecting drag reduction mud around a top pipe of the present application;

[0027] Figure 7 This is a functional flow chart of the mud detection device of the present application;

[0028] Figure 8 It is a schematic diagram of the distribution of the drag reduction mud around the rectangular jacking pipe during conventional construction and after optimization in this application;

[0029] Fig. 9 It is a schematic diagram of the distribution of the drag reduction mud around the circular jacking pipe during conventional construction and after optimization in this application;

[0030] Fig.10 It is a flowchart of specific implementation steps of the entire execution process in a preferred embodiment of the method for detecting drag reduction mud around a jacking pipe of the present application;

[0031] Fig.11 It is a structural diagram of a preferred embodiment of the drag reduction mud detection system around the jacking pipe of the present application;

[0032] Fig.12 This is a structural diagram of a preferred embodiment of the terminal of this application.

[0033] Description of reference numerals:

[0034] 100, coordinate acquisition module; 200, pressure acquisition module; 300, thickness calculation module; 400, cloud map generation module. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and effect of the present application clearer and more specific, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. The described embodiments are only possible technical implementations of the present application, not all possible implementations. Based on the embodiments in the present application, those skilled in the art can completely combine the embodiments of the present application to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present application.

[0036] Among the related technologies, one is to use geological radar to detect the distribution of drag reduction mud in the wall thickness of the jacking pipe segment. However, the wall thickness of the large-section reinforced concrete jacking pipe segment is about 800~1000mm, and the geological radar is difficult to penetrate the reinforced concrete. Therefore, it is difficult to effectively detect the distribution of drag reduction mud around the pipe segment. At the same time, the geological radar machine is large and can only detect one point at a time. The distribution of drag reduction mud around the jacking pipe changes with time, so it is impossible to detect the spatial distribution of drag reduction mud around the jacking pipe in real time; the other method is to detect whether the drag reduction mud behind the jacking pipe wall is complete by detecting the resistivity between electrodes at two positions behind the jacking pipe wall and comparing it with the resistivity of the drag reduction mud. This technology cannot detect the thickness and pressure of the drag reduction mud behind the jacking pipe wall. In addition, the geological conditions around the jacking pipe are complex and changeable, so the reliability of resistivity detection is easily affected.

[0037] If the traditional method is used to monitor the pressure of the drag-reducing mud around the jacking pipe, that is, to embed an earth pressure gauge on the outer wall of the pipe segment, the sensor cannot be reused, the cost is high, and it cannot be repaired after being damaged. At present, it is difficult to detect the distribution of the drag-reducing mud around the jacking project during the construction process.

[0038] The following describes the method, system, terminal and storage medium for detecting drag reduction mud around a top pipe according to an embodiment of the present application with reference to the accompanying drawings. In view of the problem that the pressure and thickness of drag reduction mud around a large-section top pipe in the above-mentioned related art are difficult to accurately detect at low cost, which makes the temporal and spatial distribution law of the drag reduction mud around the pipe unclear, and easily leads to the inability to form an effective lubricating mud sleeve around the pipe after grouting, the present application provides a method for detecting drag reduction mud around a top pipe, in which a three-dimensional spatial distribution cloud map of the drag reduction mud around the top pipe (including a mud pressure distribution map around the pipe and a mud thickness distribution map around the pipe) is generated through the spatial coordinates of multiple drag reduction mud detection devices, the pressure data collected by the multiple drag reduction mud detection devices, and the drag reduction mud thickness and mud sleeve thickness corresponding to each of the multiple drag reduction mud detection devices, so as to achieve the purpose of accurately detecting the pressure and thickness of the drag reduction mud around the top pipe at low cost, thereby obtaining an accurate temporal and spatial distribution law of the surrounding drag reduction mud, and then providing guidance for grouting of drag reduction mud during top pipe construction, so that an effective lubricating mud sleeve can be formed around the pipe after grouting, reducing the top resistance and the formation environment disturbance. Thereby, the technical problem in the related art that the pressure and thickness of the drag reducing mud around the large-section top pipe are difficult to accurately detect at low cost, the temporal and spatial distribution pattern of the drag reducing mud around the pipe is unclear, and an effective lubricating mud sleeve cannot be formed around the pipe after grouting is solved.

[0039] The method for detecting drag-reducing mud around pipes in the present application utilizes the differences in physical and mechanical properties of three materials, namely, the drag-reducing mud slurry, the slurry-soil mixture and the soil outside the pipe jacking. That is, when the probe with a miniature soil pressure sensor on the top penetrates different materials, the measured pressure values ​​will be significantly different. Through this direct detection method, the pressure and thickness of the drag-reducing mud around the pipe during the pipe jacking construction, as well as the thickness of the mixture of drag-reducing mud and soil (referred to as: mud sleeve) can be measured.

[0040] This application can detect the drag reduction mud pressure around the top pipe in real time, store and process data through wireless transmission, generate a spatial distribution cloud map of the pressure around the top pipe, and provide scientific guidance for adjusting the grouting pressure value of the drag reduction mud around the top pipe during the top pipe construction, which is conducive to reducing the stratum uplift caused by excessive grouting pressure, preventing the increase of the top-up resistance caused by insufficient grouting pressure, causing damage to the pipe section, insufficient top-up distance and other problems. It can also detect the drag reduction mud thickness around the top pipe in real time, store and process data through wireless transmission, generate a spatial distribution cloud map of the drag reduction mud thickness around the top pipe, and provide scientific guidance for adjusting the grouting amount of the drag reduction mud around the top pipe during the top pipe construction, which is conducive to reducing the direct contact between the top pipe and the soil around the top pipe due to insufficient grouting, which increases the friction between the pipe and the soil and produces significant stratum deformation.

[0041] The following will be combined with the attached Figure 1 and Figure 2 , the system architecture of the embodiments of the present application is introduced.

[0042] The execution subject of the embodiment of the present application is a terminal, which controls the drag reduction mud detection device around the top pipe section to detect and obtain the data collected by the drag reduction mud detection device (the pressure value collected by the soil pressure sensor and the extension amount of the telescopic rod). Figure 1The drag reduction mud detection device around the pipe joint includes an automatic telescopic rod and a micro soil pressure sensor at its end, and a wireless data acquisition instrument. The soil pressure sensor wire is placed inside the telescopic rod, and the telescopic amount of the automatic telescopic rod is controlled by a micro motor. At the same time, the soil pressure sensor at the end of the telescopic rod measures the pressure value corresponding to different telescopic amounts, and transmits the measured signal to the wireless data acquisition instrument through a wireless transmission module, and records the telescopic amount of the rod and the pressure value at the end in real time. The device has two functions of drag reduction mud pressure and thickness detection. First, the pipe surrounding drag reduction mud pressure detection mode: the detection device is installed at the drag reduction mud grouting hole position on the inner side of the pipe joint, the telescopic rod is placed inside the grouting hole of the pipe joint, and the end of the rod is located on the inner side of the outer wall of the pipe joint to prevent damage to the device during jacking. When the drag reduction mud is injected around the pipe, the mud pressure is measured by a micro soil pressure gauge to realize drag reduction mud pressure detection. Second, the drag reduction mud thickness detection mode: in the initial state, the rod is placed inside the grouting hole of the pipe joint, and only the drag reduction mud pressure can be detected; in the working state, the rod is extended and contacts the drag reduction mud, mud sleeve or formation around the pipe. The soil pressure sensor at the end of the rod measures the end pressure value to obtain the rod extension amount-rod end soil pressure change curve. Based on the physical and mechanical properties of the mud sleeve and formation around the pipe, the characteristic values ​​of the rod end-mud sleeve and rod end-formation contact pressures are obtained. According to the rod extension amount corresponding to the value on the rod extension amount-rod end soil pressure change curve, the drag reduction mud thickness and mud sleeve thickness can be calculated.

[0043] See also Figure 2 The drag reduction mud detection device includes a battery power supply module, an automatic telescopic rod module, a pressure sensor module, a displacement sensor module, a data wireless transmission module, and a wireless control module. The supporting equipment includes a wireless receiving and storage medium module. Each module works together to realize the real-time detection function of the drag reduction mud pressure and thickness around the pipe. In its workflow, the main parameters of the drag reduction mud detection device when working include three-dimensional spatial coordinates, the detected drag reduction mud pressure, and penetration resistance-stroke data. These parameters are transmitted to the data storage medium through the wireless transmission module, and the thickness of the drag reduction mud and mud sleeve is obtained through the built-in data analysis program. The analyzed data (three-dimensional spatial coordinate information, drag reduction mud pressure, and mud sleeve thickness) are uploaded to the cloud through wireless transmission, and the real-time distribution map of the drag reduction mud around the pipe during pipe jacking construction is displayed on the display screen.

[0044] The drag reduction mud detection device for pipe jacking construction of the present application can be installed before the pipe jacking section jacking construction and removed after the construction. It is easy to install and can be reused, which can significantly save the cost of monitoring the distribution of drag reduction mud.

[0045] The technical solution of the present application is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0046] The method for detecting the drag reduction mud around the top pipe described in the preferred embodiment of the present application is as follows: Figure 3 As shown, the method for detecting drag reduction mud around the top pipe includes the following steps:

[0047] In step S101, after a plurality of drag reduction mud detection devices are installed on the inner wall of the top pipe segment, the spatial coordinates of the plurality of drag reduction mud detection devices are obtained.

[0048] In a possible implementation, the spatial coordinates are spatial positions in a three-dimensional rectangular coordinate system. The drag reduction mud detection device is passed through the mud replacement steel pipes around the top pipe section and fixedly installed on the inner wall of the top pipe section. After the top pipe section is hoisted to the launch well, the spatial positions corresponding to the multiple drag reduction mud detection devices in the three-dimensional rectangular coordinate system are collected.

[0049] For details, see Figure 4 and Figure 5 In the jacking pipe section stacking area at the construction site, the steel pipe is replaced by jacking mud, and the drag reduction mud detection device is firmly installed on the inner wall of the jacking pipe section, and its function is ensured to be normal. The jacking pipe section is hoisted to the starting well, and the spatial positions of different detection devices are recorded, and the positioning is carried out using a three-dimensional rectangular coordinate system.

[0050] In step S102, during the process of pipe jacking and mud injection, the pressure data of the drag reducing mud around the pipe collected by the plurality of drag reducing mud detection devices are obtained.

[0051] In a possible implementation, each drag reduction mud detection device includes a telescopic rod and a soil pressure sensor, the end of the telescopic rod is connected to the soil pressure sensor, and in an initial state, the telescopic rod enables the soil pressure sensor to be located on the inner side of the outer wall of the top pipe segment. The pressure data of the drag reduction mud around the pipe collected by the soil pressure sensors are obtained at preset intervals.

[0052] Specifically, during the detection of the drag reduction mud pressure, the rod with a miniature soil pressure sensor at the end is extended to the side wall of the jacking pipe through the mud replacement pipe pre-buried in the jacking pipe section to directly detect the drag reduction mud pressure at different positions around the jacking pipe. The monitoring data is transmitted to the data storage medium in real time through the data acquisition module and the wireless transmission module, so that the data can be automatically processed and uploaded to the cloud, and a three-dimensional spatial distribution map of the drag reduction mud around the jacking pipe construction is generated on the display screen.

[0053] Furthermore, the pipe jacking construction is started, and drag reducing mud is injected around the pipe. The pressure of the drag reducing mud around the pipe is monitored at regular intervals (such as 1 minute) by a mud detection device.

[0054] In step S103, the mud casing penetration resistance characteristic points and the formation penetration resistance characteristic points are obtained, and during the pipe jacking construction process, the drag reduction mud thickness and mud casing thickness corresponding to each of the plurality of drag reduction mud detection devices are calculated based on the mud casing penetration resistance characteristic points and the formation penetration resistance characteristic points.

[0055] In one possible implementation, a drag reduction mud penetration test is conducted on a construction soil sample, and the telescopic rod is controlled to extend so that the soil pressure sensor contacts the drag reduction mud, mud sleeve and soil layer around the pipe, and a penetration resistance stroke curve is obtained; based on the penetration resistance stroke curve, the mud sleeve penetration resistance characteristic points and the formation penetration resistance characteristic points are determined.

[0056] In a possible implementation, based on the mud casing penetration resistance characteristic points and the formation penetration resistance characteristic points, the first stroke values ​​and the second stroke values ​​corresponding to each of the plurality of drag reduction mud detection devices are obtained; each of the first stroke values ​​is used as the drag reduction mud thickness of the corresponding drag reduction mud detection device, and the difference between each of the second stroke values ​​and the corresponding first stroke values ​​is used as the mud casing thickness of the corresponding drag reduction mud detection device.

[0057] In a possible implementation, for each of the drag-reducing mud detection devices, based on the characteristic point of the mud sleeve penetration resistance, a first stroke value of the telescopic rod being extended so that the soil pressure sensor contacts the mud sleeve is obtained; for each of the drag-reducing mud detection devices, based on the characteristic point of the stratum penetration resistance, a second stroke value of the telescopic rod being extended so that the soil pressure sensor contacts the soil layer is obtained.

[0058] Specifically, during the drag reduction mud thickness detection process, soil samples are taken from the construction site, such as Figure 1 As shown in Figure 1, a drag reduction mud penetration test was carried out in the laboratory under different pressures. A rod with a micro soil pressure sensor at the end was penetrated into the drag reduction mud, mud sleeve and soil layer. Figure 6 As shown in the figure, the penetration resistance-stroke curve is obtained, and the characteristic points of the penetration resistance of the telescopic rod into the mud sleeve under different grouting pressures are obtained according to the curve ( p 1) and formation penetration resistance characteristic points ( p 2) Characteristic points of penetration resistance of the mud casing p 1 The corresponding telescopic rod stroke (i.e., drag reduction mud thickness) is , formation penetration resistance characteristic point p 2 The corresponding telescopic rod stroke (i.e. the sum of the drag reduction mud thickness and the mud sleeve thickness) is See also Figure 7At the construction site, a drag reduction mud detection device is installed inside the jacking pipe. During the jacking construction, the telescopic rod of the drag reduction mud detection device is extended using the wireless control module to collect monitoring data in real time. The monitoring data is then transmitted to the data storage medium in real time through the data acquisition module and the wireless transmission module, and the data is automatically processed. That is, according to the characteristic points of the mud casing and the formation penetration resistance obtained from the indoor test ( p 1 and p 2), get the corresponding travel value ( and ), the thickness of the drag reduction mud and mud jacket can be obtained as and The above data is uploaded to the cloud, and a three-dimensional spatial distribution diagram of the drag reduction mud thickness and mud jacket thickness around the pipe jacking construction is generated on the display screen.

[0059] Furthermore, soil samples were taken at the construction site, and then resistance reduction mud penetration tests were carried out in the laboratory under different pressures to determine the penetration resistance characteristic points of the mud jacket and the formation ( p 1 and p 2) When the jacking pipe stops pushing due to slag discharge, the telescopic rods of the jacking pipe mud detection devices are extended through the wireless control system to record the drag reduction mud pressure values ​​under different strokes. The wireless control system is set to p At 2 o'clock, the telescopic rod begins to retract automatically. The recorded data is wirelessly transmitted to the data storage system, and the data is processed to obtain the thickness of the drag reduction mud. and mud sleeve thickness , thereby generating a distribution map of the drag reduction mud thickness around the pipe in pipe jacking construction.

[0060] In step S104, a three-dimensional spatial distribution cloud map of the drag reducing mud around the pipe jacking is generated according to the spatial coordinates, the pressure data, multiple drag reducing mud thicknesses and multiple mud sleeve thicknesses to provide guidance for grouting of the drag reducing mud during pipe jacking construction.

[0061] In a possible implementation, the three-dimensional spatial distribution cloud map includes a pressure distribution map and a thickness distribution map. According to the spatial coordinates and the pressure data, a pressure distribution map of the drag reduction mud around the jacking pipe is generated to provide guidance for adjusting the drag reduction mud grouting pressure value during the jacking construction; according to the multiple drag reduction mud thicknesses and the corresponding multiple mud sleeve thicknesses, a thickness distribution map of the drag reduction mud around the jacking pipe is generated to provide guidance for adjusting the drag reduction mud grouting amount during the jacking construction.

[0062] Figure 8 In the middle, from left to right are the drag reduction mud pressure distribution diagram around the rectangular jacking pipe, the drag reduction mud thickness distribution diagram around the rectangular jacking pipe under conventional construction conditions, and the drag reduction mud thickness distribution diagram around the rectangular jacking pipe after optimization based on the detection device data; Fig. 9 In the figure, from left to right are the drag reduction mud pressure distribution diagram around the circular jacking pipe, the drag reduction mud thickness distribution diagram around the circular jacking pipe under conventional construction conditions, and the drag reduction mud thickness distribution diagram around the circular jacking pipe after optimization based on the detection device data. Therefore, the present application solves the real-time detection and data storage and processing problems of the drag reduction mud distribution around the pipe during the jacking construction process. The real-time detection and data storage and processing of the drag reduction mud pressure, by arranging the drag reduction mud direct detection device proposed in the present application around the jacking pipe, can store the drag reduction mud pressure data around the jacking pipe through the wireless transmission and acquisition device, and generate a three-dimensional spatial distribution cloud map of the drag reduction mud pressure around the jacking pipe. The real-time detection and data storage and processing of the drag reduction mud thickness, by arranging the drag reduction mud direct detection device proposed in the present application around the jacking pipe, automatically extending the detection rod during the construction process, recording the real-time pressure change, and storing the pressure-extension change curve around the jacking pipe through the wireless transmission and acquisition device, according to the characteristic values ​​of the penetration resistance of different materials, the drag reduction mud and the mud sleeve thickness are calculated, and a three-dimensional spatial distribution cloud map of the drag reduction mud pressure around the jacking pipe is generated.

[0063] like Fig.10 As shown, the above-mentioned method for detecting drag reduction mud around the top pipe of the present application is further described below through specific embodiments:

[0064] Step K1: During the on-site implementation of the drag reduction mud detection device, soil is taken at the construction site, and a mud penetration unit test between the outer wall of the top pipe and the formation is carried out indoors to test the penetration resistance characteristic points of the mud sleeve and the formation ( p 1 and p 2) In the pipe jacking segment stacking area at the construction site, replace the steel pipe with pipe jacking mud, firmly install the drag reduction mud detection device on the inner wall of the pipe jacking segment, and fix it to the side wall of the segment with bolts. Arrange annular rubber pads around the telescopic rod between the fixed steel plate and the side wall of the segment to prevent the drag reduction mud slurry from seeping out; debug the drag reduction mud detection device to ensure its normal function; and lay out the remote control system, wireless data receiving and storage media.

[0065] Step K2, hoist the jacking pipe section to the starting well, and record the spatial positions of different detection devices in the storage medium. The position takes the geometric center of the tail of the jacking machine as the coordinate zero point, adopts a three-dimensional rectangular coordinate system, the X direction is positive to the right of the jacking axis, the Y direction is positive to the upper part, and the Z direction is positive to the jacking direction of the jacking pipe.

[0066] Step K3: Pipe jacking construction, injecting drag-reducing mud around the pipe.

[0067] Step K4: monitor the drag reduction mud pressure around the pipe every 1 minute using a mud detection device.

[0068] Step K5: Transmit to storage medium via wireless data.

[0069] Step K6: When the jacking pipe stops pushing after the slag is discharged, the telescopic rods of the jacking pipe mud detection devices are controlled to extend through the wireless control system, and the drag reduction mud pressure values ​​under different strokes are recorded. The wireless control system is set to p It will automatically retract at 2 o'clock.

[0070] Step K7: wirelessly transmit the data to the data storage system.

[0071] Step K8: Combine the three-dimensional spatial information of the drag reduction mud and generate a pressure distribution diagram of the drag reduction mud around the pipe during pipe jacking construction through a built-in program; perform data processing to obtain the thickness of the drag reduction mud. and mud sleeve thickness , the built-in program is used to generate the thickness distribution map of the drag reduction mud around the pipe in the pipe jacking construction.

[0072] Step K9, turn off the mud thickness detection mode; after the pipe jacking construction is completed, all devices are dismantled and can be reused in the next construction.

[0073] Next, the drag reduction mud detection system around the top pipe proposed in accordance with the embodiment of the present application will be described with reference to the accompanying drawings.

[0074] Fig.11 It is a structural diagram of a drag reduction mud detection system around a top pipe according to an embodiment of the present application.

[0075] like Fig.11 As shown, the drag reduction mud detection system around the jacking pipe includes: a coordinate acquisition module 100, a pressure acquisition module 200, a thickness calculation module 300 and a cloud map generation module 400.

[0076] Specifically, the coordinate acquisition module 100 is used to acquire the spatial coordinates of the plurality of drag reduction mud detection devices after the plurality of drag reduction mud detection devices are installed on the inner wall of the top pipe section;

[0077] The pressure acquisition module 200 is used to acquire the pressure data of the drag reduction mud around the pipe collected by the plurality of drag reduction mud detection devices during the process of pipe jacking and mud injection;

[0078] The thickness calculation module 300 is used to obtain the mud casing penetration resistance characteristic points and the formation penetration resistance characteristic points, and calculate the drag reduction mud thickness and mud casing thickness corresponding to each of the plurality of drag reduction mud detection devices according to the mud casing penetration resistance characteristic points and the formation penetration resistance characteristic points during the pipe jacking construction process;

[0079] The cloud map generation module 400 is used to generate a three-dimensional spatial distribution cloud map of the drag reducing mud around the jacking pipe according to the spatial coordinates, the pressure data, multiple drag reducing mud thicknesses and multiple mud sleeve thicknesses, so as to provide guidance for the grouting of the drag reducing mud during the jacking construction.

[0080] Fig.12 This is a structural diagram of a terminal provided in an embodiment of the present application. The terminal may include:

[0081] A memory 501 , a processor 502 , and a computer program stored in the memory 501 and executable on the processor 502 .

[0082] When the processor 502 executes the program, the method for detecting drag-reducing mud around the jacking pipe provided in the above embodiment is implemented.

[0083] Furthermore, the terminal further includes:

[0084] The communication interface 503 is used for communication between the memory 501 and the processor 502 .

[0085] The memory 501 is used to store computer programs that can be executed on the processor 502 .

[0086] The memory 501 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0087] If the memory 501, the processor 502 and the communication interface 503 are implemented independently, the communication interface 503, the memory 501 and the processor 502 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus or an Extended Industry Standard Architecture (EIS) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.12 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0088] Optionally, in a specific implementation, if the memory 501, the processor 502 and the communication interface 503 are integrated on a chip, the memory 501, the processor 502 and the communication interface 503 can communicate with each other through an internal interface.

[0089] The processor 502 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0090] This embodiment also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the above-mentioned method for detecting drag-reducing mud around a jacking pipe is implemented.

[0091] The computer-readable storage medium is capable of storing computer programs, and its function is to store the three-dimensional position information of the mud detection device and the soil pressure and expansion data collected by it, automatically calculate the thickness of the drag reduction mud according to the physical and mechanical properties of the soil, and draw a three-dimensional spatial distribution cloud map of the three-dimensional drag reduction mud pressure and thickness.

[0092] One embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the present application Figure 3 A method for detecting drag-reducing mud around a top pipe is provided in any of the corresponding embodiments.

[0093] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0094] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0095] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0096] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable storage medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, a "computer-readable storage medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples (non-exhaustive list) of computer-readable storage media include the following: an electrical connection with one or N wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable storage medium may even be paper or other suitable medium on which the program is printed, since the program can be obtained electronically by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways as necessary, and then storing it in a computer memory.

[0097] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above embodiment, N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0098] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0099] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0100] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

[0101] It should be understood that the application of the present application is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to this application.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for detecting drag reduction mud around a jacking pipe, characterized in that: The method for detecting drag reduction mud around the jacking pipe comprises: After a plurality of drag reduction mud detection devices are installed on the inner wall of the top pipe section, obtaining the spatial coordinates of the plurality of drag reduction mud detection devices; During the process of pipe jacking and mud injection, the pressure data of the drag reducing mud around the pipe collected by the plurality of drag reducing mud detection devices are obtained; Obtaining mud casing penetration resistance characteristic points and formation penetration resistance characteristic points, and calculating the drag reduction mud thickness and mud casing thickness corresponding to each of the plurality of drag reduction mud detection devices according to the mud casing penetration resistance characteristic points and formation penetration resistance characteristic points during the pipe jacking construction process; Generate a three-dimensional spatial distribution cloud map of the drag-reducing mud around the jacking pipe according to the spatial coordinates, the pressure data, the plurality of drag-reducing mud thicknesses and the plurality of mud sleeve thicknesses, so as to provide guidance for the grouting of the drag-reducing mud during the jacking construction; Each of the drag reduction mud detection devices includes a telescopic rod and an earth pressure sensor; The obtaining of the mud casing penetration resistance characteristic points and the formation penetration resistance characteristic points, and calculating the drag reduction mud thickness and mud casing thickness corresponding to each of the plurality of drag reduction mud detection devices according to the mud casing penetration resistance characteristic points and the formation penetration resistance characteristic points, specifically includes: Conduct a drag reduction mud penetration test on the construction soil sample, control the extension of the telescopic rod so that the soil pressure sensor contacts the drag reduction mud, mud sleeve and soil layer around the pipe, and obtain a penetration resistance stroke curve; Determining the mud casing penetration resistance characteristic point and the formation penetration resistance characteristic point according to the penetration resistance stroke curve; For each of the drag reduction mud detection devices, according to the characteristic point of penetration resistance of the mud sleeve, a first stroke value of the telescopic rod being extended so that the soil pressure sensor contacts the mud sleeve is obtained; For each of the drag reduction mud detection devices, according to the formation penetration resistance characteristic point, a second stroke value of the telescopic rod being extended so that the soil pressure sensor contacts the soil layer is obtained; The first stroke values ​​are used as the drag reduction mud thickness of the corresponding drag reduction mud detection device, and the difference between the second stroke values ​​and the first stroke values ​​is used as the mud jacket thickness measured by the corresponding drag reduction mud detection device.

2. The method for detecting drag reduction mud around a jacking pipe according to claim 1, characterized in that: The spatial coordinates are spatial positions in a three-dimensional rectangular coordinate system; After the plurality of drag reduction mud detection devices are installed on the inner wall of the top pipe section, the spatial coordinates of the plurality of drag reduction mud detection devices are obtained, specifically: The drag reduction mud detection device is passed through the mud replacement steel pipe around the top pipe section and fixedly installed on the inner wall of the top pipe section. After the top pipe section is hoisted to the starting well, the corresponding spatial positions of multiple drag reduction mud detection devices in the three-dimensional rectangular coordinate system are collected.

3. The method for detecting drag reduction mud around a jacking pipe according to claim 1, characterized in that: The end of the telescopic rod is connected to the soil pressure sensor, and in the initial state, the telescopic rod makes the soil pressure sensor located on the inner side of the outer wall of the top pipe section; The step of obtaining the pressure data of the drag reduction mud around the pipe collected by the plurality of drag reduction mud detection devices is specifically as follows: The pressure data of the drag-reducing mud around the pipe collected by the plurality of soil pressure sensors are obtained at preset time intervals.

4. The method for detecting drag reduction mud around a jacking pipe according to claim 1, characterized in that: The three-dimensional spatial distribution cloud map includes a pressure distribution map and a thickness distribution map; The generating of a three-dimensional spatial distribution cloud map of the drag reducing mud around the pipe jacking according to the spatial coordinates, the pressure data, the plurality of drag reducing mud thicknesses and the plurality of mud sleeve thicknesses to provide guidance for the grouting of the drag reducing mud during the pipe jacking construction specifically includes: Generate a pressure distribution diagram of the drag-reducing mud around the jacking pipe according to the spatial coordinates and the pressure data, so as to provide guidance for adjusting the grouting pressure value of the drag-reducing mud during the jacking construction; According to the plurality of drag-reducing mud thicknesses and the plurality of mud sleeve thicknesses, a thickness distribution diagram of the drag-reducing mud around the jacking pipe is generated to provide guidance for adjusting the grouting amount of the drag-reducing mud during the jacking construction.

5. A drag reduction mud detection system around a jacking pipe, characterized in that: The drag reduction mud detection system around the top pipe is applied to the drag reduction mud detection method around the top pipe according to any one of claims 1 to 4; the drag reduction mud detection system around the top pipe comprises: A coordinate acquisition module, used to acquire the spatial coordinates of the plurality of drag reduction mud detection devices after the plurality of drag reduction mud detection devices are installed on the inner wall of the top pipe section; A pressure acquisition module, used to acquire the pressure data of the drag reduction mud around the pipe collected by the plurality of drag reduction mud detection devices during the process of pipe jacking and mud injection; A thickness calculation module, used to obtain the mud casing penetration resistance characteristic points and the formation penetration resistance characteristic points, and calculate the drag reduction mud thickness and mud casing thickness corresponding to each of the plurality of drag reduction mud detection devices according to the mud casing penetration resistance characteristic points and the formation penetration resistance characteristic points during the pipe jacking construction process; The cloud map generation module is used to generate a three-dimensional spatial distribution cloud map of the drag reducing mud around the jacking pipe according to the spatial coordinates, the pressure data, multiple drag reducing mud thicknesses and multiple mud sleeve thicknesses, so as to provide guidance for the grouting of the drag reducing mud during the jacking construction.

6. A terminal, characterized in that: The terminal includes: a memory, a processor, and a drag reduction mud detection program around the jacking pipe stored in the memory and executable on the processor. When the drag reduction mud detection program around the jacking pipe is executed by the processor, the steps of the drag reduction mud detection method around the jacking pipe as described in any one of claims 1 to 4 are implemented.

7. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program for detecting drag reduction mud around a jacking pipe, and when the program for detecting drag reduction mud around a jacking pipe is executed by a processor, the steps of the method for detecting drag reduction mud around a jacking pipe according to any one of claims 1 to 4 are implemented.

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