CN112267464B - Intelligent protection system for reconstructing and expanding highway slope - Google Patents

Abstract

The invention provides an intelligent protection system for reconstructing and expanding a highway slope, which comprises a power cone penetrometer, a plurality of optical fiber sensors and a mobile engineering truck, wherein the power cone penetrometer comprises a drop hammer, a penetration rod and a plurality of penetration cone heads; the movable engineering truck comprises a lifting device, a vertical clamping device and a truck body fixing disc; the vehicle body fixing disc is used for fixing the mobile engineering vehicle; the mobile engineering vehicle further comprises a data storage module and a data analysis module; the power cone penetrometer performs penetration sampling on the preset target area surface under the control of the mobile engineering vehicle, and the optical fiber sensor sends data acquired by each penetration sampling to the data storage module; the data acquired by sampling each penetration comprises penetration depth data of the penetration rod; and the intelligent protection system analyzes the sampled data through a data analysis module to obtain a slope expansion scheme of the expressway on the preset target area surface.

Description

Intelligent protection system for reconstructing and expanding highway slope

Technical Field

The invention belongs to the technical field of slope monitoring and protection, and particularly relates to an intelligent protection system for reconstructing and extending a highway slope.

Background

In recent years, due to rapid increase of traffic volume, the four-lane highway built in early China cannot meet traffic demands, and faces the reconstruction and expansion tasks of the highway. The slope on one side of the roadbed refers to a slope surface with a certain slope which is formed on two sides of the roadbed to ensure the stability of the roadbed.

The step excavation is a commonly adopted mode for splicing the roadbeds of the highway extension project at present, and the height and the width of the step excavation are determined by factors such as the type of roadbed filling materials, the roadbed bearing capacity and the like. In the process, reasonable step excavation height needs to be determined, and the old roadbed is utilized to the maximum extent.

The original support of the side slope must be dismantled in the process of reconstructing and expanding the expressway, so that the stress of the side slope is redistributed, and therefore, the stability of the side slope in the excavation process is in the dynamic development process, and the time sequence of excavation and support, the rainfall in the construction period and the like have great influence on the side slope. If the treatment is not proper, the slope is likely to be unstably damaged. Therefore, the method for researching the deformation rule and stability of the side slope in the excavation process and seeking a reasonable excavation supporting method and a side slope reinforcing measure have important significance for ensuring the safety and stability of the reconstruction and expansion side slope project.

The chinese patent application with application number CN201911318571.9 proposes an intelligent protection system for reconstructing and expanding highway slope, which comprises: an intelligent monitoring module; a guard, comprising: the fixing devices are detachably and fixedly connected with each other; the fixing device includes: the main rod is of a hollow structure, and a plurality of first holes are formed in the longitudinal direction of the main rod; pouring slurry into the main rod, wherein the slurry comprises a soil adhesive; the inserting plates are uniformly arranged on the periphery of the main rod at intervals; the connecting plate is connected between the parallel adjacent inserting plates, a cavity is formed in one side, facing the slope, of the connecting plate, movable supporting plates are arranged in the cavity, each supporting plate comprises a first supporting plate and a second supporting plate connected to the outer side of the corresponding first supporting plate, and a plurality of second holes are formed in the corresponding second supporting plate. The invention is beneficial to building the integral reinforcement of the side slope, timely discovers and prevents the possible side slope disaster phenomenon and has a buffer structure for reducing the disaster.

The Chinese patent application with the application number of CN202010431672.3 provides a method for preventing traffic congestion in reconstruction and extension of a highway, which comprises the following steps: s1, preferentially detecting the range of road reconstruction and extension; s2, for a high-speed running vehicle starting a GPS positioning system, transmitting the expanded range information to a positioning navigation device; s3, the positioning navigation device transmits expressway dredging information to a user who starts a GPS, and the expressway dredging information is broadcasted through a vehicle-mounted voice system, and the technical field of expressway reconstruction and expansion anti-blocking schemes is related. The method for preventing traffic jam traffic dispersion in expressway reconstruction and expansion facilitates the driver to change lanes in advance through a voice reminding mode, driving is kept on a safe driving line, normal passing of vehicles is effectively prevented from being influenced by lane changing after approaching, passing speed and smoothness of expressway reconstruction and expansion road sections are accelerated, installation distances of three groups of direction guiding devices provide lane changing distances and time for driving vehicles, and traffic accidents and blockage caused by emergency lane changing are effectively avoided.

However, in the prior art, no matter the splicing design and construction of the roadbed in the highway extension project or the selection of the existing highway slope protection scheme, a large number of engineering technicians are required to manually collect relevant data on site, and then the corresponding extension or protection scheme is given by combining practical experience, so that the efficiency is low, the limitation is caused by the experience and subjective recognition of the engineering technicians, the accuracy of field data collection is limited, and the efficiency and the accuracy are required to be improved.

Disclosure of Invention

Therefore, the invention provides an intelligent protection system for reconstructing and expanding a highway slope, which comprises a power cone penetrometer, a plurality of optical fiber sensors and a mobile engineering truck, wherein the power cone penetrometer comprises a drop hammer, a penetration rod and a plurality of penetration cone heads; the movable engineering truck comprises a lifting device, a vertical clamping device and a truck body fixing disc; the vehicle body fixing disc is used for fixing the mobile engineering vehicle; the mobile engineering vehicle further comprises a data storage module and a data analysis module; the power cone penetrometer performs penetration sampling on the preset target area surface under the control of the mobile engineering vehicle, and the optical fiber sensor sends data acquired by each penetration sampling to the data storage module; the data acquired by sampling each penetration comprises penetration depth data of the penetration rod; and the intelligent protection system analyzes the sampled data through a data analysis module to obtain a slope expansion scheme of the expressway on the preset target area surface.

According to the technical scheme, the mobile engineering control power cone penetrometer is used for automatically sampling on site, and meanwhile, a feedback signal is generated based on data acquired by the optical fiber sensor to change a control mode, so that on-site actual data can be acquired more completely and accurately, and a slope expansion scheme and a slope protection scheme are obtained intelligently after the actual data is analyzed based on accurate and objective memorability.

The technical scheme of the invention is generally realized as follows:

the utility model provides a reform and expand highway slope intelligent protection system, intelligent protection system includes power awl penetrometer and a plurality of optical fiber sensor.

Wherein, power awl penetrometer includes drop hammer, penetration pole and a plurality of penetration cone head.

As a first improvement point of the invention, the intelligent protection system further comprises a mobile engineering truck, wherein the mobile engineering truck comprises a lifting device, a vertical clamping device and a truck body fixing disc;

the lifting device is used for holding the drop hammer and vertically lifting the drop hammer to a preset height;

the vertical clamping device is used for clamping other parts of the power cone penetrometer except the drop hammer to ensure that the other parts are vertical to a preset target area surface of the highway side slope and the penetration cone head is vertically contacted with the preset target area surface;

the vehicle body fixing disc is used for fixing the mobile engineering vehicle, so that the mobile engineering vehicle does not displace when in a working state;

as a second improvement point of the present invention, at least two optical fiber sensors are parallel to the penetration rod, and the two optical fiber sensors and the penetration rod are located on the same plane;

the mobile engineering vehicle further comprises a data storage module and a data analysis module;

the data storage module is further connected with a feedback control device, and the feedback control device is in wireless communication with the lifting device.

The power cone penetrometer performs penetration sampling on the preset target area surface under the control of the mobile engineering vehicle, and the optical fiber sensor sends data acquired by each penetration sampling to the data storage module; the data acquired by sampling each penetration comprises penetration depth data of the penetration rod;

and the intelligent protection system analyzes the sampled data through a data analysis module to obtain a slope expansion scheme of the expressway on the preset target area surface.

The specific implementation principle of the system of the invention is as follows:

after the lifting device holds the drop hammer and is vertically lifted to a first preset height, the drop hammer is enabled to freely fall;

and responding to the free falling body of the falling hammer, and acquiring the penetration depth data of the penetration rod through the optical fiber sensor.

More specifically, as a further innovation point of the present invention, after analyzing the sampled data by the data analysis module, the intelligent protection system obtains a slope expansion scheme of the highway on the predetermined target area surface, which specifically includes:

the data analysis module acquires the penetration depth data and the corresponding penetration times of the penetration rod to obtain the CBR value or the rebound modulus of the preset target area surface;

determining the slope extension scenario based on the CBR value or the modulus of resilience.

As one of the key technical means of the innovation, the slope expansion scheme comprises the excavation thickness of the slope when the expressway is expanded;

and/or rebuilding a protection scheme of the slope on the expressway, wherein the protection scheme comprises ecological protection species determined according to the CBR value.

As a situation, if the penetration depth data acquired by the data storage device is continuously lower than a second threshold value, controlling the lifting device and the vertical clamping device to change the penetration position of the power cone penetrometer, and then holding the drop hammer again to vertically lift the drop hammer to a first preset height, so that the drop hammer freely falls;

as another situation, if the penetration depth data acquired by the data storage device is continuously lower than a second threshold, the feedback control device generates a feedback control signal and sends the feedback control signal to the lifting device, so that the lifting device increases the first predetermined height;

then, the drop hammer is held again, and is lifted vertically to the first preset height after being increased, so that the drop hammer falls freely.

Correspondingly, if the penetration depth data acquired by the data storage device continuously increase, after the penetration depth data is greater than a second threshold value, the lifting device and the vertical clamping device are controlled to change the penetration position of the power cone penetrometer, and the penetration cone head and at least one optical fiber sensor are integrated and poured into the preset target area surface.

After a preset time period, acquiring monitoring data of the optical fiber sensors, and analyzing stability indexes of the preset target area surface based on the monitoring data;

and determining a slope expansion scheme of the expressway on the preset target area surface based on the stability index.

The advantages and key technical means of the invention at least comprise:

(1) the intelligent automatic sampling work is carried out by adopting the mobile engineering vehicle to control the power cone penetrometer, so that the problem of low efficiency caused by manual operation in the prior art is solved;

(2) the method comprises the steps that sampling data are obtained based on an optical fiber sensor, and corresponding feedback or adjustment signals are generated after the sampling data are subjected to real-time stage analysis of a time sequence, so that the mobile engineering truck can adjust a control mode and better adapt to field changes;

(3) the optical fiber sensor and the power cone penetrometer are combined and configured for use, so that the optical fiber sensor can be configured on site more conveniently to acquire sampling data with a longer time scale, stability analysis is performed, and a better slope protection scheme is obtained or a reference index is reconstructed and expanded.

Further advantages of the invention will be apparent in the detailed description section in conjunction with the drawings attached hereto.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a main structure diagram of an intelligent protection system for reconstructing and extending a highway slope according to an embodiment of the present invention

FIG. 2 is a block diagram of the components of the mobile work vehicle of the system of FIG. 1

Fig. 3-5 are flow diagrams of different embodiments of the principles of data acquisition and control using the system of fig. 1.

Detailed Description

The invention is further described with reference to the following drawings and detailed description.

Fig. 1 is a main structure diagram of an intelligent protection system for rebuilding and expanding a highway slope according to an embodiment of the invention.

In fig. 1, the intelligent protection system includes a power cone penetrometer and a plurality of optical fiber sensors. The power cone penetrometer comprises a drop hammer, a penetration rod and a plurality of penetration cone heads.

In this embodiment, the power penetrometer is an instrument for measuring soil firmness by penetrating a probe into soil in a hammering manner, and the hammering amount of the probe reaching a certain depth or the depth of the hammering amount is used as the indication.

The Dynamic Cone Penetrometer (DCP) has the advantages of rapidness, simplicity, convenience, no field limitation and suitability for evaluating the bearing capacity of a construction site or an old road bed. The Dynamic Cone Penetrometer (DCP for short) can effectively overcome the defects of methods such as sand filling, cutting ring, irrigation and electric soil sampler by quickly detecting the penetration of the soil foundation, and is a new generation of quick detection equipment for soil foundation compaction performance.

In the prior art, when the DCP is tested, 3 human operators are generally required, wherein: one person holds the handle, erects and holds the instrument, simultaneously pastes the conical tip downwards to the surface of the soil foundation and enables the penetration rod to be vertical to the surface of the soil foundation as much as possible; one person lifts the drop hammer and lets it fall freely, one person records the corresponding scale reading after every 2 hammering.

The penetration rod gradually penetrates into the soil foundation under the impact action of the drop hammer, obviously, the harder the soil foundation is, the more times the soil foundation is penetrated to a certain depth is, and the corresponding penetration depth of each hammer is smaller; on the contrary, the softer the soil foundation, the fewer the number of times of penetration to a certain depth, and the greater the penetration depth per hammer. Therefore, the test results of the DCP can reflect the structural performance and compaction condition of the soil foundation.

Obviously, the above manual process is inefficient.

In this embodiment, the intelligent protection system further comprises a mobile engineering truck, wherein the mobile engineering truck comprises a lifting device, a vertical clamping device and a truck body fixing tray;

the lifting device is used for holding the drop hammer and vertically lifting the drop hammer to a preset height;

the vertical clamping device is used for clamping other parts of the power cone penetrometer except the drop hammer to ensure that the other parts are vertical to a preset target area surface of the highway side slope and the penetration cone head is vertically contacted with the preset target area surface;

after the lifting device holds the drop hammer and is vertically lifted to a first preset height, the drop hammer is enabled to freely fall;

and responding to the free falling body of the falling hammer, and acquiring the penetration depth data of the penetration rod through the optical fiber sensor.

In this process, the body fixing plate is used for fixing the mobile engineering vehicle, so that the mobile engineering vehicle does not displace when in a working state.

The mobile engineering vehicle further comprises a data storage module and a data analysis module;

the power cone penetrometer performs penetration sampling on the preset target area surface under the control of the mobile engineering vehicle, and the optical fiber sensor sends data acquired by each penetration sampling to the data storage module; the data acquired by sampling each penetration comprises penetration depth data of the penetration rod;

and the intelligent protection system analyzes the sampled data through a data analysis module to obtain a slope expansion scheme of the expressway on the preset target area surface.

Based on at least the embodiment, the invention adopts the mobile engineering vehicle to control the power cone penetrometer to carry out intelligent automatic sampling work, thereby solving the problem of low efficiency caused by manual operation in the prior art.

Further, fig. 2 is referred to in addition to fig. 1.

The mobile engineering vehicle further comprises a data storage module and a data analysis module; the data storage module is also connected with a feedback control device, and the feedback control device is in wireless communication with the lifting device;

after analyzing the sampled data through a data analysis module, the intelligent protection system obtains a slope expansion scheme of the highway on the predetermined target area surface, and specifically includes:

the data analysis module acquires the penetration depth data and the corresponding penetration times of the penetration rod to obtain the CBR value or the rebound modulus of the preset target area surface;

determining the slope extension scenario based on the CBR value or the modulus of resilience.

As a schematic introduction, according to the American AASHTO regulations, there is the following relationship between DCP test results and CBR:

wherein, PR is the penetration rate of DCP test, mm/hammer times; CBR is the California load ratio,%,

therefore, the soil foundation CBR can be rapidly calculated by recording the penetration rate of the DCP during field test, and the bearing capacity of each layer of the roadbed can be preliminarily evaluated.

In the prior art, although the principle is known, the sampling data are only obtained statically for calculation, and the field data cannot be reflected accurately and comprehensively. In order to solve the problems, the invention is further improved in that sampling data are acquired based on the optical fiber sensor, and corresponding feedback or adjustment signals are generated after the sampling data are subjected to real-time stage analysis of time series, so that the mobile engineering truck can adjust a control mode and better adapt to field changes.

In particular, reference is made to FIGS. 3-5.

After the system starts to work, the lifting device holds the drop hammer and vertically lifts the drop hammer to a first preset height, so that the drop hammer freely falls;

and responding to the free falling body of the falling hammer, and acquiring the penetration depth data of the penetration rod through the optical fiber sensor.

The process can be continued for a plurality of times to obtain penetration depth data of a plurality of samples;

if the penetration depth data acquired by the data storage device is continuously lower than a second threshold value, the feedback control device generates a feedback control signal and sends the feedback control signal to the lifting device, so that the lifting device increases the first preset height.

For example, in the prior art, it is generally required that after a heavy hammer is hit down, the hammering times and the shaft penetration depth after the single penetration depth exceeds 5mm are recorded; if the penetration depth of single hammering is less than 5mm, the current data does not meet the sampling requirement, and repeated sampling is needed;

in this embodiment, in order to improve the efficiency, a feedback control signal is generated and sent to the lifting device, so that the lifting device increases the first predetermined height.

In another aspect, in order to make sampling points representative, if the penetration depth data acquired by the data storage device is continuously lower than a second threshold value, the lifting device and the vertical clamping device are controlled to change the penetration position of the power cone penetrometer.

On the basis, a data analysis module acquires the penetration depth data and the corresponding penetration times of the penetration rod to obtain the CBR value or the rebound modulus of the preset target area surface; and determining the slope expansion scheme based on the CBR value or the rebound modulus, for example, determining the depth of an excavation step according to the CBR mean value and the penetration depth mean value after determining the bearing capacity of the slope, wherein the shallower the excavation depth is at the bottom of the penetration depth mean value.

The slope expansion scheme comprises the excavation thickness of the slope when the expressway is expanded;

and/or rebuilding a protection scheme of the slope on the expressway, wherein the protection scheme comprises ecological protection species determined according to the CBR value.

The ecological protection species determined according to the CBR value can be plant vegetation corresponding to the CBR value after the excavation depth or the shallow depth is determined according to the CBR value.

Similar vegetation selection techniques, reference may be made to the following prior art:

shuxiang, Dujuan, Cao Zihong, Liao Xiao Ling application of ecological engineering in highway rock slope protection engineering [ A ] Chinese Highway society, fourth International Association of road and airport pavement technologies [ C ] Chinese Highway society, 2002:6.

In another aspect, if the penetration depth data obtained by the data storage device continuously increases, after the penetration depth data is greater than a second threshold value, the penetration cone head is integrated with at least one optical fiber sensor and then poured into the predetermined target area surface;

more specifically, the lifting device and the vertical clamping device are controlled to change the penetration position of the power cone penetrometer, and the penetration cone head and at least one optical fiber sensor are integrated and then poured into the preset target area surface.

More specifically, the fixing operation of the body fixed tray is closed, so that the mobile working vehicle travels a predetermined displacement length on the expressway.

Then, after a preset time period, acquiring monitoring data of the optical fiber sensors, and analyzing stability indexes of the preset target area surface based on the monitoring data;

and determining a slope expansion scheme of the expressway on the preset target area surface based on the stability index.

The optical fiber sensor can be used for monitoring the aspects of foundation pit, side slope, temperature field, soil deformation and the like of the side slope concrete structure, so that a corresponding extension or protection scheme is obtained, for example, after the stability index is based, the stability result of the side slope is obtained, and then corresponding protection measures are given.

Slope monitoring and stability analysis using fiber optic sensing techniques are known in the art, for example, see:

application of slope monitoring system based on fiber sensing technology, such as invar, build, Roc, Bae Huafu, etc

J. Lanzhou university newspaper: nature science, 2011, 47 (supplement): 290-.

Xiaoyi Bao,Chunshu Zhang,Wenhai Li,et al. Using distributed brillouin sensor to Predict pipe deformation with carbon coated fibers[J]. The 2nd international workshop on opto-electronic sensor-based monitoring in geo-engineering(2nd OSMG-2007)[C]. Nanjing University, Nanjing,China, October18-19,2007.

Application of Liu Yongli distributed optical fiber sensing technology in slope engineering monitoring is researched by doctor academic thesis of Zhejiang university, 2011.

However, although the related principle belongs to the prior art, how to arrange the optical fiber sensor on the side slope field and reduce the cost is the problem to be solved by the invention.

In this embodiment, only if the penetration depth data acquired by the data storage device continuously increases, the penetration cone head is integrated with at least one optical fiber sensor and then poured into the predetermined target area surface after the penetration depth data is greater than a second threshold value.

At this time, the penetration conical head is a disposable tool, and after the penetration depth reaches the requirement (the penetration depth reaches or slightly exceeds the layer thickness of the bearing capacity to be judged), the penetration rod is taken out, and the test conical head and the optical fiber sensor are left in the soil foundation.

It is noted that here also a multiplexing of the fiber sensors is done. When the conditions are not met, the optical fiber sensor is used for acquiring short-time on-site real-time sampling data; when the conditions are met, the optical fiber sensor is integrated with the penetration cone head and then is distributed to the field for long-term data sampling analysis.

It can be seen that, based on this embodiment, optical fiber sensor and power cone penetrometer combined configuration use for optical fiber sensor can be more convenient at the on-the-spot configuration acquisition longer time scale's sampling data, thereby carries out stability analysis, obtains more excellent slope protection scheme or changes the extension reference index.

As a more specific example, after acquiring the sampling data of the longer time scale, the data analysis module of the intelligent protection system performs finite element analysis through the Midas GTS software. The slope rock-soil body adopts a modified Mohr-Coulomb model, the constitutive model for the equivalent slope adopts high-order units in solid units to divide grids, and grid size is added at the upper part, so that the accuracy of a finite element calculation result is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. An intelligent protection system for reconstructing and expanding a highway slope comprises a power cone penetrometer and a plurality of optical fiber sensors,

the method is characterized in that:

the dynamic cone penetrometer comprises a drop hammer, a penetration rod and a plurality of penetration cone heads;

the intelligent protection system also comprises a mobile engineering truck, wherein the mobile engineering truck comprises a lifting device, a vertical clamping device, a truck body fixing disk, a data storage module and a data analysis module;

the data storage module is connected with a feedback control device, and the feedback control device is in wireless communication with the lifting device;

after the lifting device holds the drop hammer and is vertically lifted to a first preset height, the drop hammer is enabled to freely fall;

responding to the free falling body of the drop hammer, acquiring the penetration depth data of the penetration rod through the optical fiber sensor, and sending the data acquired by each penetration sampling to the data storage module through the optical fiber sensor;

if the penetration depth data acquired by the data storage device is continuously lower than a second threshold value, the feedback control device generates a feedback control signal and sends the feedback control signal to the lifting device, so that the lifting device increases the first preset height;

if the penetration depth data acquired by the data storage device is continuously lower than a second threshold value, controlling the lifting device and the vertical clamping device to change the penetration position of the power cone penetrometer;

and the intelligent protection system analyzes the sampled and acquired data through a data analysis module to obtain a slope expansion scheme of the expressway on a preset target area surface.

2. The system for intelligently protecting the reconstruction and extension of the expressway slope as claimed in claim 1, wherein:

the vertical clamping device is used for clamping other parts of the power cone penetrometer except the drop hammer to ensure that the other parts are vertical to a preset target area surface of the highway side slope and the penetration cone head is vertically contacted with the preset target area surface;

at least two optical fiber sensors are parallel to the penetration rod, and the two optical fiber sensors and the penetration rod are positioned on the same plane;

the vehicle body fixing disc is used for fixing the mobile engineering vehicle, so that the mobile engineering vehicle does not displace when in a working state;

the power cone penetrometer is used for carrying out penetration sampling on the preset target area surface under the control of the mobile engineering vehicle, and the data acquired by each penetration sampling comprises the penetration depth data of the penetration rod.

3. The system for intelligently protecting the reconstruction and extension of the expressway slope as claimed in claim 1, wherein:

the intelligent protection system analyzes the sampled and acquired data through a data analysis module to obtain a slope expansion scheme of the highway on the preset target area, and the scheme specifically comprises the following steps:

the data analysis module acquires the penetration depth data and the corresponding penetration times of the penetration rod to obtain the CBR value or the rebound modulus of the preset target area surface;

determining the slope extension scenario based on the CBR value or the modulus of resilience.

4. The system for intelligently protecting the reconstruction and extension of the expressway slope as claimed in claim 3, wherein:

the slope expansion scheme comprises the excavation thickness of the slope when the expressway is expanded;

and/or the presence of a gas in the gas,

and rebuilding the highway to obtain a protection scheme of the slope, wherein the protection scheme comprises ecological protection species determined according to the CBR value.

5. The system for intelligently protecting the reconstruction and extension of the expressway slope as claimed in any one of claims 1 to 3, wherein:

the intelligent protection system analyzes the sampled and acquired data through a data analysis module to obtain a slope expansion scheme of the highway on the preset target area, and the scheme specifically comprises the following steps:

and if the penetration depth data acquired by the data storage device continuously increases, after the penetration depth data is greater than a second threshold value, integrating the penetration conical head with at least one optical fiber sensor, and then pouring the integrated penetration conical head into the preset target area surface.

6. The system for intelligently protecting the reconstruction and extension of the expressway slope as claimed in any one of claims 1 to 3, wherein:

if the penetration depth data acquired by the data storage device continuously increases, after the penetration depth data is larger than a second threshold value, controlling the lifting device and the vertical clamping device to change the penetration position of the power cone penetrometer, and after integrating the penetration cone head with at least one optical fiber sensor, filling the penetration cone head into the preset target area surface.

7. The system for intelligently protecting the reconstruction and extension of the expressway slope as claimed in claim 6, wherein:

if the penetration depth data acquired by the data storage device continuously increases, after the penetration depth data is greater than a second threshold value, closing the fixing operation of the vehicle body fixed disk, so that the mobile engineering vehicle travels on the expressway for a predetermined displacement length.

8. The system for intelligently protecting and enlarging expressway slopes as claimed in any one of claims 1 to 3 or 7, wherein:

after a preset time period, acquiring monitoring data of the optical fiber sensors, and analyzing stability indexes of the preset target area surface based on the monitoring data;

and determining a slope expansion scheme of the expressway on the preset target area surface based on the stability index.

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