Deep hole slurry circulation construction monitoring and early warning system

Abstract

The utility model belongs to the field of bridge pile foundation hole cleaning, and particularly discloses a deep hole slurry circulation construction monitoring and early warning system which comprises a slurry data on-line monitoring module and an alarm module, the alarm module is in wireless connection with the slurry data on-line monitoring module, and the slurry data on-line monitoring module is in wireless connection with the alarm module. The mud data on-line monitoring module comprises a mud density monitoring device, a sand content monitoring device, a PH monitoring device, a mud flow speed monitoring device and a temperature monitoring device, data such as mud density, flow speed, sand content and temperature during pile foundation hole cleaning are collected in real time through the mud data on-line monitoring module, and the data are displayed and alarmed through the alarm device; according to the mud density monitoring device, the mud density monitoring device is arranged, a worker masters mud in real time and provides a basis for adjusting mud data, the mud density monitoring device comprises the array ultrasonic transducer, different sampling ultrasonic frequencies are output through the array ultrasonic transducer to collect the mud density, and the sampling precision of the mud density is improved.

Description

Technical Field

[0001] This utility model belongs to the field of bridge pile foundation hole cleaning technology, and specifically relates to a deep hole mud circulation construction monitoring and early warning system. Background Technology

[0002] Pit cleaning is a crucial step in bridge foundation construction. If the sediment at the bottom of the hole does not meet requirements after the reinforcement cage is installed, secondary cleaning is necessary. Currently, the mud circulation method is commonly used to clean pile foundation sediment. The viscosity of the mud carries out the mud and sand from the sediment, which is then circulated through a device to remove the mud and sand before being injected back into the pile foundation for continuous cleaning.

[0003] Currently, when using the mud circulation method for cleaning bridge pile foundations, the control of mud parameters mainly relies on the experience of construction personnel, making it difficult to guarantee stability and accuracy. This can easily lead to quality problems such as hole collapse and diameter reduction. Information transmission is also delayed, and mud parameter data records are scattered, making real-time monitoring and data analysis difficult. This is detrimental to construction management and quality control. Furthermore, when using ultrasonic densitometers to test the density of mud with high sand content, the strong scattering effect of sand on ultrasonic waves results in insufficient stability and accuracy of mud density measurement data. This leads to workers making incorrect adjustments to the mud density, affecting the overall quality of hole cleaning and prolonging the construction period.

[0004] In view of this, the present invention proposes a deep hole mud circulation construction monitoring and early warning system to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a deep hole mud circulation construction monitoring and early warning system to solve the technical problems in the prior art, which mainly relies on manual experience to adjust mud data during the pile foundation cleaning process, resulting in information delays and difficulty in ensuring the stability and accuracy of mud data, as well as the inaccurate data obtained by traditional ultrasonic densitometers when measuring the density of mud with high sand content.

[0006] To achieve the above objectives, this utility model provides a deep-hole mud circulation construction monitoring and early warning system, comprising:

[0007] The system includes an online mud data monitoring module and an alarm module, which are wirelessly connected. The online mud data monitoring module includes a mud density monitoring device, which includes an ultrasonic probe, a signal processing circuit, and a signal output circuit. The ultrasonic probe is equipped with an array of ultrasonic transducers, which are connected to the signal processing circuit, and the signal processing circuit is connected to the signal output circuit.

[0008] Preferably, in the above technical solution, the array ultrasonic transducer includes a first array ultrasonic transducer, a second array ultrasonic transducer, and a signal conditioning circuit. The first array ultrasonic transducer and the second array ultrasonic transducer are respectively connected to the signal conditioning circuit. The signal processing circuit is respectively connected to the first array ultrasonic transducer, the second array ultrasonic transducer, and the signal conditioning circuit. The first array ultrasonic transducer and the second ultrasonic transducer are arranged vertically on the ultrasonic probe.

[0009] Preferably, in the above technical solution, the first array of ultrasonic transducers is arranged in a fan shape, and the second array of ultrasonic transducers is arranged in a one-dimensional linear shape.

[0010] Preferably, in the above technical solution, the alarm module includes a display, a first controller, an audible and visual alarm device, and a first wireless communication module, wherein the display, the audible and visual alarm device, and the first wireless communication module are all connected to the first controller.

[0011] Preferably, in the above technical solution, the mud data online monitoring module further includes a second controller and a second wireless communication module, the second controller being connected to the second wireless communication module, and the second wireless communication module being wirelessly connected to the first wireless communication module.

[0012] Preferably, in the above technical solution, the online mud data monitoring module further includes a sand content monitoring device, a pH monitoring device, and a mud flow rate monitoring device, all of which are connected to the second controller.

[0013] Preferably, in the above technical solution, the mud data monitoring module further includes a temperature monitoring device, which is connected to the mud density monitoring device and the second controller.

[0014] Preferably, the above technical solution further includes a mud circulation module, which includes a grouting unit, a grout inlet unit, a first filtration unit, and a second filtration unit, wherein the first filtration unit, the second filtration unit, and the grout inlet unit are connected in sequence.

[0015] Preferably, in the above technical solution, the first filtration unit includes a first sedimentation tank and a vibrating filter screen, and the second filtration unit includes a second sedimentation tank.

[0016] Compared with existing technologies, this utility model has the following beneficial effects:

[0017] 1. This utility model uses an online mud data monitoring module to collect mud density data during pile foundation cleaning. An alarm module triggers an alarm based on the data. The online mud data monitoring module and the alarm module communicate wirelessly. An array of ultrasonic transducers periodically generates ultrasonic waves of various frequencies to collect density data from different mud layers. Based on the different scattering effects of different frequencies on the mud liquid and gravel, calculations are performed to reduce the influence of gravel on mud density, thus achieving high-precision and online collection of mud density data.

[0018] 2. This utility model uses a sand content monitoring device, a pH monitoring device, a mud flow rate monitoring device, and a temperature monitoring device to collect data such as sand content, pH value, mud flow rate, and temperature in the mud in real time. After the data is collected by the second controller, it is remotely sent to the alarm device through the second wireless communication module. The alarm device displays and outputs an alarm, realizing real-time monitoring of important mud data during pile foundation cleaning. According to the alarm content, the staff can adjust the mud parameters to improve the cleaning efficiency of mud for pile foundation sediment.

[0019] 3. This utility model uses a temperature monitoring device to collect the mud temperature in real time, and a mud density monitoring device to perform temperature compensation calculations on the sound velocity of ultrasonic waves propagating in the mud based on the mud temperature, thereby improving the measurement accuracy of the mud density monitoring device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall layout structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the overall circuit structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the hardware structure of the mud density monitoring device of this utility model.

[0023] Figure 4 This is a schematic diagram of the circuit structure of the mud density monitoring device of this utility model.

[0024] In the diagram: 1—Grouting unit, 2—Grouting injection unit, 3—Online mud data monitoring module, 4—First filtration unit, 5—Second filtration unit, 100—First controller, 101—First wireless communication module, 102—Display, 103—Audible and visual alarm device, 200—Second controller, 201—Mud density monitoring device, 202—Sand quantity monitoring device, 203—PH monitoring device, 204—Mud flow rate monitoring device, 205—Temperature monitoring device, 206—Second wireless communication module, 2011—Ultrasonic probe, 2012—First array ultrasonic transducer, 2013—Second array ultrasonic transducer, 2014—Signal conditioning circuit, 2015—Signal processing circuit, 2016—Signal output circuit. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0026] refer to Figures 1 to 4 A deep-hole mud circulation construction monitoring and early warning system includes a mud data online monitoring module 3, an alarm module, and a mud circulation module. The mud circulation module includes a grouting unit 2, a grout inlet unit 1, a first filtration unit 4, and a second filtration unit 5. The mud data online monitoring module 3 includes a second controller 200, a mud density monitoring device 201, a sand quantity monitoring device 202, a pH monitoring device 203, a mud flow rate monitoring device 204, a temperature monitoring device 205, and a second wireless communication module 206. The alarm module includes a display 102, a first controller 100, an audible and visual alarm device 103, and a first wireless communication module 101.

[0027] The mud density monitoring device 201 includes an ultrasonic probe 2011, a signal processing circuit 2015, and a signal output circuit 2016. The ultrasonic probe 2011 is equipped with an array of ultrasonic transducers, which includes a signal conditioning circuit 2014, a first array of ultrasonic transducers 2012, and a second array of ultrasonic transducers 2013. The first array of ultrasonic transducers 2012 and the second array of ultrasonic transducers 2013 are respectively connected to the signal conditioning circuit 2015. The signal processing circuit 2015 is connected to the signal conditioning circuit 2016. Circuit 2014, the first array ultrasonic transducer 2012, and the second array ultrasonic transducer 2013 are connected. Signal processing circuit 2015 is connected to signal output circuit 2016. Signal conditioning circuit 2015 is used to drive the second array ultrasonic transducer 2013 to generate 500kHz-0.5MHz sound waves and to drive the first array ultrasonic transducer 2012 to generate 5MHz-10MHz sound waves. Both the first array ultrasonic transducer 2012 and the second array ultrasonic transducer 2013 have multiple ultrasonic detectors. The ultrasonic transducer head consists of a first array of ultrasonic transducers 2012 with a fan-shaped ultrasonic probe arrangement and a second array of ultrasonic transducers 2013 with a one-dimensional linear ultrasonic probe arrangement. When collecting mud density data, the sound velocity of the 500kHz-0.5MHz sound waves generated by the second array of ultrasonic transducers 2013 is significantly attenuated by sand particles, making it more sensitive to sand particles. In contrast, the 5MHz-10MHz sound waves generated by the first array of ultrasonic transducers 2012... Hz ultrasound has strong penetrating power through sand particles. The attenuation of ultrasound propagation in mud is mainly affected by the mud density. Therefore, the signal processing circuit 2015 collects the ultrasonic echoes from the first array ultrasonic transducer 2012 and the second array ultrasonic transducer 2013 respectively. Then, based on the different attenuation levels of the two transducers in mud, and the attenuation characteristic curves of ultrasound in mud and sand particles, it calculates the mud density with high accuracy, reducing the influence of sand particles in the mud on the mud density measurement and improving the accuracy of mud density. Meanwhile, both the first array ultrasonic transducer 2012 and the second array ultrasonic transducer 2013 employ multiple ultrasonic probes arranged in an array. The ultrasonic waves emitted by each probe are superimposed on each other. By using phase control, the propagation angle of the ultrasonic waves can be changed, enabling a scanning function when detecting mud density. This avoids the problem in existing technologies where a rotating mechanism is required to drive the ultrasonic probe to rotate, resulting in severe erosion and wear of the moving ultrasonic probe by the mud. In addition, the ultrasonic transducer of the first array ultrasonic transducer 2012 adopts a fan-shaped arrangement structure, which has high focusing accuracy for high-frequency ultrasonic signals and can effectively improve the detection accuracy of mud density.

[0028] Temperature monitoring device 205, sand content monitoring device 202, pH monitoring device 203, mud flow velocity monitoring device 204, and mud density monitoring device 201 are all connected to the second controller 200. The second controller 200 is connected to the second wireless communication module 206, which is wirelessly connected to the first wireless communication module 101. Sand content monitoring device 202 measures the sand concentration in the mud, pH monitoring device 203 measures the pH value in the mud, and mud flow velocity monitoring device 204 measures the flow velocity in the mud. The second controller 200 receives data from the sand content monitoring device 202, pH monitoring device 203, mud flow velocity monitoring device 204, and mud density monitoring device 201, and wirelessly transmits the data to the first wireless communication module 101 via the second wireless communication module 206. 101 is connected to the first controller 100, which is connected to the audible and visual alarm device 103 and the display 102 respectively. When the first controller 100 detects that the data in the mud is greater than or lower than the threshold set by the user, the first controller 100 drives the audible and visual alarm device 103 and the display 102 to sound an alarm, so as to realize online monitoring and early warning of the data in the mud. In this embodiment, the sand content monitoring device 202 is a laser particle size analyzer of model LJ-JL800S, the pH monitoring device 203 is a PH4502C module, the mud flow rate monitoring device 204 is an AN-WLG radar flow meter, and the temperature monitoring device 205 is a DS18B20 temperature detection module. The first controller 100 and the second controller 200 are both single-chip microcomputers of the STM32F407 series.

[0029] Temperature monitoring device 205 and mud density monitoring device 201 are used to collect the temperature in the mud. Temperature monitoring device 205 collects the temperature in the mud. Mud density monitoring device 201 compensates for the propagation speed of ultrasonic waves in the mud based on the temperature in the mud, thereby improving the measurement accuracy of mud density monitoring device 201.

[0030] The first filtration unit 4, the second filtration unit 5, and the grouting unit 1 are connected in sequence. During the cleaning process, grouting unit 2 injects mud into the pile hole for the first time. The mud carries the mud and sludge in the pile hole to the first filtration unit 4. After most of the mud and sand are filtered out by the first sedimentation tank and vibrating filter of the first filtration unit 4, the mud enters the sedimentation tank of the second filtration unit 5 for secondary sedimentation and filtration. Then, it is injected back into the pile hole through the grouting unit 1 to achieve the cyclic cleaning of the pile hole. During this process, the staff can adjust the density of the mud by injecting mud or clean water through the grouting unit 2 by observing the alarm module.

[0031] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A deep-hole mud circulation construction monitoring and early warning system, comprising an online mud data monitoring module and an alarm module, wherein the online mud data monitoring module and the alarm module are wirelessly connected, and the online mud data monitoring module includes a mud density monitoring device, characterized in that, The mud density monitoring device includes an ultrasonic probe, a signal processing circuit, and a signal output circuit. The ultrasonic probe is equipped with an array of ultrasonic transducers, which are connected to the signal processing circuit, and the signal processing circuit is connected to the signal output circuit.

2. The deep-hole mud circulation construction monitoring and early warning system according to claim 1, characterized in that, The array ultrasonic transducer includes a first array ultrasonic transducer, a second array ultrasonic transducer, and a signal conditioning circuit. The first array ultrasonic transducer and the second array ultrasonic transducer are respectively connected to the signal conditioning circuit. The signal processing circuit is respectively connected to the first array ultrasonic transducer, the second array ultrasonic transducer, and the signal conditioning circuit. The first array ultrasonic transducer and the second ultrasonic transducer are arranged vertically on the ultrasonic probe.

3. The deep-hole mud circulation construction monitoring and early warning system according to claim 2, characterized in that, The first array of ultrasonic transducers is arranged in a fan shape, and the second array of ultrasonic transducers is arranged in a one-dimensional linear shape.

4. The deep-hole mud circulation construction monitoring and early warning system according to claim 1, characterized in that, The alarm module includes a display, a first controller, an audible and visual alarm device, and a first wireless communication module, all of which are connected to the first controller.

5. The deep-hole mud circulation construction monitoring and early warning system according to claim 4, characterized in that, The mud data online monitoring module also includes a second controller and a second wireless communication module. The second controller is connected to the second wireless communication module, and the second wireless communication module is wirelessly connected to the first wireless communication module.

6. The deep-hole mud circulation construction monitoring and early warning system according to claim 5, characterized in that, The online mud data monitoring module also includes a sand content monitoring device, a pH monitoring device, and a mud flow rate monitoring device. The mud density monitoring device, sand content monitoring device, pH monitoring device, and mud flow rate monitoring device are all connected to the second controller.

7. The deep-hole mud circulation construction monitoring and early warning system according to claim 5, characterized in that, The mud data monitoring module also includes a temperature monitoring device, which is connected to the mud density monitoring device and the second controller.

8. The deep-hole mud circulation construction monitoring and early warning system according to claim 1, characterized in that, It also includes a mud circulation module, which includes a grouting unit, a mud inlet unit, a first filtration unit, and a second filtration unit, which are connected in sequence.

9. The deep-hole mud circulation construction monitoring and early warning system according to claim 8, characterized in that, The first filtration unit includes a first sedimentation tank and a vibrating filter screen, and the second filtration unit includes a second sedimentation tank.

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