Multi-probe device for monitoring vacuum degree of soft foundation

Abstract

The utility model discloses a multi-probe device for monitoring the vacuum degree of a soft foundation. The multi-probe device comprises a plurality of probe assemblies which are connected with one another and a cable for supplying power to the probe assemblies, the probe assembly comprises a first pipe body, a second pipe body, a partition plate and a sensor, a threading hole is formed in the first pipe body, a plurality of vent holes are formed in the second pipe body, a mounting hole is formed in the partition plate, and the sensor is mounted in the mounting hole; wherein the partition plate is installed at the joint of the first pipe body and the second pipe body, the main body of the sensor is located in the first pipe body, the probe of the sensor is located in the second pipe body, and the electric connection end of the sensor is connected with a cable entering the first pipe body through the threading hole. According to the utility model, each probe assembly is provided with a sensor, the vacuum pressure value at the installation position of the probe assembly can be directly measured by using the sensors, the measurement belongs to direct measurement, the monitoring data is more accurate, and the construction process is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of soft foundation monitoring, specifically relates to a kind of for soft foundation vacuum degree monitoring Multi-probe device. BACKGROUND

[0002] The observation of soil vacuum degree in vacuum preloading method, especially the vacuum degree under sealing membrane, is an important index for construction process control, and is an important basis for evaluating whether the preloading load meets the design requirements and the vacuum preloading reinforcement effect.

[0003] The current vacuum degree monitoring method mainly involves burying a vacuum tube at a specified depth of land. For example, a vacuum preloading soil vacuum degree monitoring device disclosed in Chinese patent CN201821368961.8 includes a vacuum degree reading fixed end, a vacuum pressure tube, a vacuum probe and a geotextile. The vacuum probe wrapped by the geotextile is placed in the vacuum preloading soil or under the vacuum preloading sealing membrane. The vacuum pressure gauge is fixed on the concrete fixed disc. The vacuum pressure gauge and the vacuum probe are connected through the pressure tube. The vacuum degree between the soil and the vacuum probe is equivalent observed through the vacuum probe buried in the soil at different depths, which meets the requirements of real-time monitoring of vacuum degree in vacuum preloading foundation treatment.

[0004] The vacuum probe in the prior art only provides a detection cavity connected to the soil, which belongs to indirect measurement. The vacuum pressure in the detection cavity needs to be transmitted outward through the vacuum pressure tube. This probe does not have the function of directly measuring the vacuum degree, and cannot meet the demand of real-time monitoring. In addition, this method can only monitor a single measuring point, and cannot monitor multiple measuring points simultaneously. UTILITY MODEL CONTENTS

[0005] To at least partially solve the problems in the prior art, the main purpose of the utility model is to provide a Multi-probe device for soft foundation vacuum degree monitoring, which can directly monitor multiple measuring points.

[0006] To achieve the above main purpose, the utility model discloses a Multi-probe device for soft foundation vacuum degree monitoring, which includes multiple probe assemblies connected to each other and a cable for supplying power to the probe assemblies.

[0007] The probe assembly includes:

[0008] A first tube body having a threading hole thereon;

[0009] A second tube body having a plurality of air holes thereon;

[0010] A partition having a mounting hole thereon;

[0011] A sensor mounted to the mounting hole;

[0012] The baffle is installed at the connection of the first pipe body and the second pipe body to separate the internal spaces of the first pipe body and the second pipe body, and the main body of the sensor is located in the first pipe body, the probe of the sensor is located in the second pipe body, and the electric connection end of the sensor is connected with the cable entering into the first pipe body through the threading hole.

[0013] According to a specific embodiment of the utility model, the sensor is a pressure sensor.

[0014] According to a specific embodiment of the utility model, the second pipe body is provided with a stepped connecting groove at one end close to the first pipe body, and the baffle is installed in the connecting groove.

[0015] According to a specific embodiment of the utility model, the first pipe body and the second pipe body are both metal pipe bodies, and are welded or threadedly connected.

[0016] According to a specific embodiment of the utility model, the plurality of air holes are arranged on the outer peripheral wall of the second pipe body in a uniform arrangement or array arrangement.

[0017] According to a specific embodiment of the utility model, the second pipe body is a circular pipe, the middle part of the second pipe body is inwardly contracted to form a mounting groove, and the plurality of air holes are arranged in the mounting groove.

[0018] According to a specific embodiment of the utility model, further comprising a waterproof and breathable membrane, the waterproof and breathable membrane is wound in the mounting groove.

[0019] According to a specific embodiment of the utility model, the first pipe body is provided with a first cover plate at one end away from the second pipe body, and the threading hole is arranged on the first cover plate; wherein, the threading hole is provided with an electric connector, and different cables are connected through the electric connector.

[0020] According to a specific embodiment of the utility model, the length of the second pipe body is more than 5cm.

[0021] According to a specific embodiment of the utility model, the plurality of probe assemblies are connected together through an adapter pipe.

[0022] The utility model has the following beneficial effects: a multi-probe device for soft foundation vacuum degree monitoring is provided, wherein each probe assembly is loaded with a sensor, the sensor can directly measure the vacuum pressure value at the installation position of the probe assembly, which belongs to direct measurement, compared with the traditional vacuum pressure pipe, the monitoring data is more accurate, and the construction process is more convenient.

[0023] In order to more clearly illustrate the purpose, technical scheme and advantages of the utility model, the utility model will be further described in detail in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a mounting structure diagram of the multi-probe device;

[0025] Figure 2 is Figure 1 a partial view of the multi-probe device;

[0026] Figure 3 is an internal schematic view of the single-probe assembly;

[0027] Figure 4 is Figure 3 a front view of the single-probe assembly;

[0028] Figure 5 is an exploded view of the single-probe assembly. DETAILED DESCRIPTION

[0029] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without some or all of these details. In other instances, well known process steps have not been described in detail in order to avoid unnecessarily obscuring the present application.

[0030] As Figures 1-2 shown, the multi-probe device 10 of the present embodiment can be used in cooperation with a collection device 20, the collection device 20 is installed to the top of the detection hole, and the multi-probe device 10 is installed to the bottom of the collection device 20 and extends into the detection hole. The collection device 20 here specifically carries a collection module and a communication module, the collection module is used to obtain multi-point monitoring data in the multi-probe device 10, and the communication module is used to transmit the monitoring data obtained by the collection module out, for example, to the cloud or the user terminal. The collection device 20 is not limited in the embodiment, and therefore will not be expanded.

[0031] The multi-probe device 10 includes a plurality of probe assemblies 11 connected to each other and a cable 12 for supplying power to the probe assemblies 11; the number of probe assemblies 11 can be set as needed, wherein the plurality of probe assemblies 11 are connected together through an adapter pipe 13, for example, a hollow metal pipe, the length of which can be customized as needed; for example, when the detection hole depth is 20 meters and the monitoring points are arranged at intervals of 4 meters, 5 probe assemblies 11 and 5 adapter pipes 13 are needed.

[0032] The specific structure of the single probe assembly 11 will be introduced below; as Figures 3-5 shown, the probe assembly 11 includes a first pipe body 111, a second pipe body 112, a partition plate 113, and a sensor 114.

[0033] The first pipe body 111 and the second pipe body 112 are hollow pipe bodies, and the partition plate 113 is installed at the connection of the first pipe body 111 and the second pipe body 112 to separate the internal spaces of the first pipe body 111 and the second pipe body 112. Specifically, the second pipe body 112 is provided with a stepped connection groove 115 at one end close to the first pipe body 111, and the partition plate 113 is installed in the connection groove 115. Preferably, the first pipe body 111 and the second pipe body 112 are metal pipe bodies, and are welded or threadedly connected between them to fix the partition plate 113 while achieving sealing.

[0034] Further, the partition plate 113 is provided with a mounting hole, and the sensor 114 is mounted at the mounting hole of the partition plate 113, with the main body of the sensor 114 located in the first pipe body 111 and the probe of the sensor 114 located in the second pipe body 112. The outer peripheral wall of the second pipe body 112 is provided with a plurality of air holes 116, which are arranged in a uniform manner. In other embodiments, the plurality of air holes 116 can also be arranged in a horizontal and vertical array or in a group manner.

[0035] The sensor 114 in the embodiment is specifically a pressure sensor, which can directly measure the vacuum pressure of the internal space of the second pipe body 112. Please continue to refer to Figure 3 and Figure 5 The first pipe body 111 is provided with a first cover plate 117 at the end away from the second pipe body 112, and the first cover plate 117 is provided with a threading hole 118. The electrical connection end of the sensor 114 is connected with the cable 12 entering the first pipe body 111 through the threading hole 118 to achieve power supply for the sensor 114. Preferably, an electrical connector 119 is provided at the threading hole 118, and different cables 12 can be quickly connected through the electrical connector 119.

[0036] In order to facilitate power supply for the sensors 114 in the plurality of probe assemblies 11, a three-way adapter 14 is provided on the cable 12 located in the first pipe body 111, and the electrical connection end of the sensor 114 is electrically connected with the cable 12 through the three-way adapter 14. Correspondingly, the partition plate 113 is provided with a first perforation, and the end of the second pipe body 112 away from the first pipe body 111 is provided with a second cover plate 1121, and the second cover plate 1121 is provided with a second perforation. The lower end of the above-mentioned cable 12 located in the first pipe body 111 extends downward through the first perforation and the second perforation in sequence to be electrically connected with other cables 12. Similarly, the downwardly extending cable 12 is preferably quickly connected with other cables 12 through an electrical connector 119 such as a waterproof aviation plug, so that power supply for the sensors 114 in the plurality of probe assemblies 11 can be achieved without additional wiring, and the assembly process is relatively convenient.

[0037] Please continue to refer to Figure 3The second pipe body 112 is a circular pipe, and a middle part of the second pipe body 112 is inwardly contracted (preferably equidistantly contracted) to form a mounting groove 1122, and a plurality of air holes 116 are arranged in the mounting groove 1122. The mounting groove 1122 is wound with a water-proof and air-permeable film, and the water-proof and air-permeable film can be further wound with a geotextile. In this structure, the water-proof and air-permeable film and the geotextile can isolate the silt, so as to ensure that the pressure in the second pipe body 112 is the same as that of the surrounding soil. In addition, when the probe assembly 11 is installed and pulled out of the soil for recycling, the water-proof and air-permeable film and the geotextile at the mounting groove 1122 will not be damaged, which is beneficial to the recycling of the device.

[0038] The length of the second pipe body 112 in the embodiment is preferably greater than 5 cm, so as to provide a large enough measurement space to communicate with the surrounding soil, and to obtain more accurate vacuum degree data.

[0039] Although the present application is described above through the embodiments, the above embodiments are only used for exemplarily describing the implementable schemes of the present application, but are not used for limiting the protection scope of the present application. Any equivalent replacement or change made by the person skilled in the art according to the present application should also be covered by the protection scope defined by the claims of the present application.

Claims

1. A multi-probe device for soft foundation vacuum monitoring, comprising a plurality of probe assemblies connected to each other and a cable for powering the probe assemblies; characterized in that: the probe assembly comprises: a first tube body provided with a threading hole; a second tube body provided with a plurality of air holes; a partition plate provided with a mounting hole; a sensor mounted to the mounting hole; wherein the partition plate is mounted to the connection between the first tube body and the second tube body to separate the internal space of the first tube body and the second tube body, and the main body of the sensor is located in the first tube body, the probe of the sensor is located in the second tube body, and the electrical connection end of the sensor is connected to the cable entering the first tube body through the threading hole.

2. The multi-probe apparatus for soft ground vacuum monitoring of claim 1, wherein: The sensor is a pressure sensor.

3. The multi-probe apparatus for soft ground vacuum monitoring of claim 1, wherein: The second tube body is provided with a stepped connection groove near one end of the first tube body, and the partition plate is mounted in the connection groove.

4. The multi-probe apparatus for soft ground vacuum monitoring of claim 1, wherein: The first tube body and the second tube body are both metal tube bodies, and are welded or threadedly connected.

5. The multi-probe apparatus for soft ground vacuum monitoring of claim 1, wherein: The plurality of air holes are arranged on the outer peripheral wall of the second tube body in a uniform arrangement or array arrangement.

6. The multi-probe apparatus for soft ground vacuum monitoring of claim 1, wherein: The second tube body is a circular tube, the middle part of the second tube body is inwardly contracted to form a mounting groove, and the plurality of air holes are arranged in the mounting groove.

7. The multi-probe apparatus for soft ground vacuum monitoring of claim 6, wherein: Further comprising a water-resistant air-permeable film, which is wound in the mounting groove.

8. The multi-probe apparatus for soft ground vacuum monitoring of claim 1, wherein: The first tube body is provided with a first cover plate at the end away from the second tube body, and the threading hole is arranged on the first cover plate; wherein the threading hole is provided with an electrical connector, and different cables are connected through the electrical connector.

9. The multi-probe apparatus for soft ground vacuum monitoring of claim 1, wherein: The length of the second tube body is more than 5 cm.

10. The multi-probe apparatus for soft ground vacuum monitoring of claim 1, wherein: A plurality of probe assemblies are connected together through an adapter pipe.

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