Construction method for accurately marking the range, depth and volume of silt solidification

Abstract

The application discloses a construction method for accurately marking the solidification range, depth and volume of silt, and realizes the accurate marking of the solidification range of silt in situ based on the GPS positioning and image recognition principle, and the accurate control of the volume of solidifying agent required by each block in combination with the volume control of the solidifying agent, so that the problems of solidification repetition and uncontrollable solidifying agent consumption in the solidification process of silt in situ are eliminated, the solidification effect of silt in situ is greatly improved, the intelligent management of the solidification range and volume of silt in situ is realized, the accurate control of the solidification range and volume of silt in situ is ensured, the problems of solidification area repetition and omission in the solidification process of silt are reduced, the uneven problems of the bearing capacity strength of the foundation of the solidification site are caused, and the solidification effect is really improved.

Description

TECHNICAL FIELD

[0001] The present application is suitable for the technical field of soft foundation treatment, in particular, relates to a construction method for accurately calibrating the range, depth and volume of silt solidification, which is suitable for the fields of soft foundation construction and silt solidification. BACKGROUND

[0002] In view of the problems of repeated silt solidification range, uneven solidification agent dosage and uneven solidification depth, the current main method for silt solidification design in situ is the artificial large-scale grid method, which is limited by the size of the silt solidification stirring head. The silt solidification in each grid area still needs to be further refined in combination with the size of the stirring head. At present, the refined silt solidification is mainly controlled by the experience of the operator, which leads to the problems of repeated silt solidification range, uneven solidification agent dosage and uneven solidification depth control.

[0003] Therefore, based on the GPS positioning + image recognition principle, the present application designs a control system and device for accurately calibrating the range, depth and volume of silt solidification, realizes the accurate calibration of the silt solidification range in situ, accurately controls the solidification agent volume required by each block in combination with the solidification agent volume required, and realizes the real-time control of the stirring depth through the stirring rod induction light strip, which eliminates the problems of repeated silt solidification, uncontrolled solidification agent dosage and stirring depth in the silt solidification process in situ, greatly improves the solidification effect of the silt solidification in situ, realizes the intelligent and accurate management of the silt solidification range, solidification agent volume and solidification depth in situ, and provides experience reference for the solidification treatment of soft foundation.

[0004] In order to improve the solidification effect of silt solidification and reduce the problems of repeated silt solidification range, uneven solidification agent dosage and uneven solidification depth in the silt solidification process, it is urgent to design an intelligent control method suitable for accurately calibrating the range, depth and volume of silt solidification. SUMMARY

[0005] Object: In view of the above technical problems, the present application provides a construction method for accurately calibrating the range, depth and volume of silt solidification. Based on the GPS positioning + image recognition principle, the present application realizes the accurate calibration of the silt solidification range in situ, accurately controls the solidification agent volume required by each block in combination with the solidification agent volume required, eliminates the problems of repeated silt solidification and uncontrolled solidification agent dosage in the silt solidification process in situ, greatly improves the solidification effect of the silt solidification in situ, realizes the intelligent management of the silt solidification range and solidification agent volume in situ, ensures the accurate control of the silt solidification range and volume in situ, reduces the problems of repeated silt solidification range and missed silt solidification area in the silt solidification process, leads to the problem of uneven strength of the foundation bearing capacity of the subsequent solidification site, and truly improves the solidification effect.

[0006] In order to achieve the above technical purposes, the present application adopts the following technical means:

[0007] A construction method for accurately calibrating the range, depth and volume of silt solidification comprises the following steps:

[0008] S1, an infrared grid laser, a digital imaging device, a positioning unit and a stirring depth sensor are installed on the stirring rod of the floating excavation equipment; after the installation of the equipment is completed, the excavator is first opened to the specified position, the stirring head is kept perpendicular to the ground, and the distance between the stirring head and the ground is kept at 1-2 m;

[0009] S2, the positioning unit is used to determine the position of the stirring rod;

[0010] The infrared grid laser projects an infrared grid area to be solidified by the stirring head on the ground;

[0011] The digital imaging device takes a picture of the infrared grid area, collects digital images of the infrared grid area at a certain frame rate, and transmits them to a data processing device for analysis and processing to obtain real-time size information of the infrared grid area at each image collection time; after the infrared grid area size is fed back to the data processing device, the data processing device automatically calculates the required theoretical solidification agent volume based on the previous data and design requirements;

[0012] S3, turn off the infrared grid laser and the digital imaging device, and start the in-situ silt solidification operation; after the stirring rod enters the silt layer, the stirring depth sensor fixed on the stirring rod transmits the stirring depth value and the up-down insertion speed during the stirring process in real time through electrical signals, and the stirring depth value and the up-down insertion speed during the stirring process are displayed in real time on the control platform in the cab of the stirring equipment, and the current solidification agent consumption is also displayed in real time on the control platform;

[0013] S4, when the stirring depth reaches the expected depth and the solidification agent grouting volume reaches the expected solidification agent amount, the control platform controls the solidification agent pump to stop grouting, and the control platform feeds back signals to the operator.

[0014] Further, the infrared grid laser projects an area-adjustable identification box on the ground according to the size of the stirring head before stirring, 1m*0.5m small squares are arranged in the identification box, the small squares correspond to the projection area of one stirring head, and the data processing device calculates the expected solidification agent amount required for each small square in combination with the total slurry amount pumped by the solidification agent pump.

[0015] Further, a protection shell is installed on the stirring rod, the infrared grid laser and the digital imaging device are installed in the protection shell, a closable cover is arranged on the protection shell, when the cover is opened, the infrared grid laser can project the area to be solidified on the ground, and the digital imaging device can take a photo of the infrared grid; when the cover is closed, the protection shell can protect the infrared grid laser and the digital imaging device from being damaged by sludge, underground water and solidifying agent during the solidification process.

[0016] Further, a connecting rod and a control rod for driving the connecting rod are arranged on the stirring rod, the connecting rod is connected with the cover, and the control rod controls the connecting rod to open or close the cover.

[0017] Further, the stirring depth sensor comprises an inductive light strip, which is arranged on the protection shell along the axis direction of the stirring rod and is relatively fixed to the protection shell through a fixing socket, and the inductive light strip is uniformly provided with density sensors or pressure sensors, which can reflect the sinking depth of the stirring rod in real time by sensing the change of surrounding sludge and air, and monitor the sinking speed of the stirring rod by using the change of the sinking depth slope.

[0018] Further, the stirring depth sensor is a laser range finder arranged at the end of the stirring rod away from the stirring head, which can monitor the sinking depth of the stirring rod in real time and monitor the sinking speed of the stirring rod by using the change of the sinking depth slope.

[0019] Further, the floating excavating equipment is an excavator, and the excavator is provided with a floating box type bottom.

[0020] Further, the positioning unit is a GPS positioning module.

[0021] Beneficial effects:

[0022] Compared with the existing sludge in-situ solidification method, the present application has the following advantages:

[0023] Firstly, the conventional excavator bottom track type is modified into a floating box type, which can increase the buoyancy of the excavator in the high water content sludge layer and avoid the sinking of the excavator during the sludge solidification process.

[0024] Secondly, the head of the excavator is modified into a stirring rod + stirring head design, and the stirring head adopts a Γ-shaped blade type stirring head, which can improve the cutting ability of the stirring head to the sludge during the up-down stirring process.

[0025] Third. A protective shell is installed at the stirring rod part, the end of the protective shell is designed with an open and close type telescopic plate structure, an infrared grid laser is installed in the protective shell, an area adjustable identification box is projected according to the size of the stirring head before the sludge is stirred, 1m*0.5m small squares can be set in the box, the small squares correspond to the projection area of one stirring head, so that the solidification area can be accurately positioned and meet the metering requirements. A sensing light strip is fixed along the stirring rod outside the protective shell, the other end of the sensing light strip is connected with the operation room control platform, under different depth stirring, the sensing light strip can transmit the current stirring depth in real time, and reflect and guide in the operation room control platform in real time. The other end of the infrared grid laser is connected with the intelligent control platform in the driver room through the connecting line under the sealing and waterproof protection of the protective shell, the intelligent control platform can display the currently solidified and unsolidified small blocks in real time, and calculate the required solidifying agent amount of each small square combined with the total slurry amount of the solidifying agent pumping, when the solidifying agent amount reaches the expected amount, the system automatically stops grouting, when the solidifying agent grouting amount needs to be increased, the human operation control can also be performed, and the projection of the small square will change color to form a difference with other non-construction areas.

[0026] The application is based on the GPS positioning + image recognition principle, and designs a control system and device for accurately calibrating the sludge solidification range and amount, realizes the accurate calibration of the in-situ sludge solidification range, accurately controls the solidifying agent amount required by each block combined with the solidifying agent amount control, eliminates the problems of sludge solidification repetition and uncontrollable solidifying agent amount in the in-situ sludge solidification process, greatly improves the solidification effect of the in-situ sludge solidification, realizes the intelligent management of the in-situ sludge solidification range and solidifying agent amount, ensures the accurate control of the in-situ sludge solidification range and amount, reduces the problems of sludge solidification area repetition and omission, and the problems of uneven strength of the subsequent solidification site foundation bearing capacity caused by the problems, and truly improves the solidification effect. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 The application is a site sludge deep stirring process.

[0028] 1 is a stirring rod; 2 is a control rod; 3 is a sensor; 4 is an infrared grid laser; 5 is a stirring head Γ-shaped blade; 6 is a stirring head; 7 is a floating excavation arm; 8 is a control platform; 9 is a floating box track walking device; and 10 is a floating excavation equipment.

[0029] Figure 2 The application is a sludge solidification stirring head size accurate control detail schematic view.

[0030] Wherein, 100 is the infrared grid laser connection line; 300 is the inductive light band fixed to the protector shell; 400 is the protector shell; 600 is the infrared grid laser shell; 700 is the infrared grid laser emitter head; 800 is the protective cover connection ring; 900 is the closed cover; 1000 is the closed cover rotation track; 11 is the infrared grid laser emission track.

[0031] Figure 3 It is an infrared grid laser emission identification range diagram for the size of the stirring head,

[0032] Wherein, 200 is the infrared grid laser emission identification range.

[0033] Figure 4 It is an intelligent control platform operation interface diagram for sludge solidification,

[0034] Wherein, A is a sludge solidification block; B is a non-sludge solidification block; C is a stirring depth inductive display light column; D is a current stirring up-down insertion speed reflection indicator; E is a stirring speed display scale line; F is a function button; G is a parameter display; H is a function indication nameplate. DETAILED DESCRIPTION

[0035] In order to better understand the present application, the following will be described in detail in conjunction with the drawings and examples:

[0036] In the invention, all the orientation indicators are referred to the ground as the reference system, the longitudinal direction is perpendicular to the ground, and the transverse direction is horizontal to the ground. "Up" means that the excavator stirring head is away from the ground and the stratum, and "down" means that the excavator stirring head is close to the ground and the stratum.

[0037] Figure 1 It is a field sludge deep mixing process diagram. In order to adapt to the in-situ solidification environment of high-fluidity sludge layer, the floating excavating equipment 10 is modified and optimized. The equipment modification part mainly includes the floating box track walking device 9, the stirring rod 1 and the stirring head 6. In order to realize the accurate control of the field sludge solidification range, depth and solidifying agent quantity, the control platform 8, the stirring depth sensor 3, the stirring depth digital display value, the infrared grid laser 4 and the corresponding protector shell and other components are added.

[0038] After all equipment is installed, the modified excavator is first driven to the designated position, keeping the mixing head 6 perpendicular to the ground and maintaining a distance of 1-2 meters from the ground. The protective cover of the infrared grid laser 4 is opened, and the laser 4 projects the area to be solidified by the mixing head 6 onto the ground. The dimensions of this area are fed back to the control platform, which automatically calculates the required theoretical volume of curing agent based on prior data and design requirements. After the projection is complete, the protective cover of the infrared grid laser 4 is closed, and the in-situ solidification of the sludge begins. Once the mixing rod 1 penetrates deep into the sludge layer, the mixing depth sensor 3 fixed to the mixing rod transmits the mixing depth value in real time via electrical signals, which is displayed on the control platform. Simultaneously, the current amount of curing agent used is also displayed on the platform in real time. When the mixing depth and curing agent volume reach the set requirements, the control system will provide signal feedback, allowing operators to be informed and to control the process precisely.

[0039] Figure 2 This is a detailed schematic diagram illustrating precise dimensional control of the sludge solidification mixing head. Before sludge solidification, the mixing head 6 is adjusted to the designated position. The protective housing 400 at the end, fixed to the mixing rod 1, is opened via the connecting rod, and the infrared grid laser 4 is activated. The infrared grid laser will project an image onto the ground as shown in the diagram. Figure 3 The small solidification area shown is suitable for the stirring head. After projection recognition, it will be... Figure 4 The control platform automatically acquires the curing depth and curing agent volume; then, the sealing cap 900 at the end of the protective shell 4 fixed on the stirring rod 1 is closed by the connecting rod to prevent silt, groundwater and curing agent from damaging the infrared grid laser 4 during the curing process;

[0040] The sludge solidification and mixing process begins. A mixing depth sensor 3, fixed to the protective housing 400, is used. The mixing depth sensor 3 is secured using a fixing clip. During the mixing process, the mixing depth sensor 3 continuously senses the mixing depth and the vertical insertion speed, and... Figure 4 The control platform displays the mixing depth and speed in real time, achieving precise control over the mixing depth and speed.

[0041] In a preferred embodiment of the present invention, the stirring depth sensor employs a sensing light strip, within which density sensors or pressure sensors are uniformly distributed. By sensing changes in the surrounding silt and air, the sensor reflects the real-time sinking depth of the stirring rod. Simultaneously, by utilizing changes in the sinking depth slope, the sinking speed of the stirring rod is monitored, facilitating real-time adjustment by the operator. The density sensor is an L-Dens 3300, and the pressure sensor is an MS5561C.

[0042] As a preferred embodiment of the present application, a laser range finder is installed at the end of the stirring rod away from the stirring head to monitor the sinking depth of the stirring rod in real time, and the sinking speed of the stirring rod is monitored by using the slope change of the sinking depth, so that the operator can control in real time.

[0043] Figure 3 The figure shows the identification range of the infrared grid laser for the size of the stirring head.

[0044] Figure 4 The figure shows the operation interface of the intelligent control platform for sludge solidification. The intelligent control platform mainly includes three parts. One part is the display platform for solidification and non-solidification blocks. The solidified area is shown by solid lines, and the non-solidified area is shown by dashed lines.

[0045] The second part is the real-time display area of the solidification depth and solidification speed. The stirring speed display light column C shows the current stirring speed change in real time. When the current stirring insertion speed reflection indicator D is high, it indicates that the sinking or rising speed of the stirring head is fast at this time, and the operator needs to intervene and control. When the current stirring insertion speed reflection indicator D is low, it indicates that the sinking or rising speed of the stirring head is slow at this time, and the operator also needs to intervene and control, and appropriately increase the stirring rising and sinking speed. The stirring speed display scale line E is marked around the light column, and the current solidification stirring depth value is displayed on the solidification depth digital display in real time.

[0046] The third part is other control buttons of the operation platform. The circular area is the current state display lamp, and the parameter display G reflects the parameter value of the corresponding function indication plaque H.

Claims

1. A construction method for accurately marking the extent, depth and volume of silt solidification, characterized in that, The method comprises the following steps: S1, installing an infrared grid laser, a digital imaging device, a positioning unit and a stirring depth sensor on a stirring rod of a floating excavation device; after the installation of the above device is completed, first open the excavator to a specified position, keep the stirring head perpendicular to the ground, and maintain a distance of 1-2 m from the ground; S2, the positioning unit is used to determine the position of the stirring rod; The infrared grid laser projects an infrared grid area to be solidified by the stirring head on the ground; The digital imaging device photographs the infrared grid area, collects digital images of the infrared grid area at a certain frame rate, and transmits them to a data processing device for analysis and processing to obtain real-time size information of the infrared grid area at each image collection time; after the infrared grid area size is fed back to the data processing device, the data processing device automatically calculates the required theoretical solidifying agent amount based on the previous data and design requirements; S3, turn off the infrared grid laser and the digital imaging device, and start the in-situ solidification of the sludge; after the stirring rod enters the sludge layer, the stirring depth sensor fixed on the stirring rod transmits the stirring depth value and the up-down insertion speed during the stirring process in real time through electrical signals, and the stirring depth value and the up-down insertion speed during the stirring process are displayed in real time on a control platform in the cab of the stirring device, and the current solidifying agent amount is also displayed in real time on the control platform; S4, when the stirring depth reaches the expected depth and the solidifying agent grouting amount reaches the expected solidifying agent amount, the control platform controls the solidifying agent pump to stop grouting, and the control platform feeds back signals to the operator.

2. The construction method for accurately marking the range, depth, and volume of sludge solidification according to claim 1, characterized in that, The infrared grid laser projects an area-adjustable identification box on the ground according to the size of the stirring head before stirring, a small square of 1m*0.5m is arranged in the identification box, the small square corresponds to the projection area of one stirring head, the data processing device calculates the expected solidifying agent amount required for each small square in combination with the total slurry amount of the solidifying agent pump.

3. The construction method for accurately marking the range, depth, and volume of sludge solidification according to claim 1, characterized in that, A protective shell is installed on the stirring rod, the infrared grid laser and the digital imaging device are installed in the protective shell, a closable cover is arranged on the protective shell, when the cover is opened, the infrared grid laser can project the area to be solidified by the stirring head on the ground, and the digital imaging device can take pictures of the infrared grid; When the cover is closed, the protective shell can protect the infrared grid laser and the digital imaging device from being damaged by sludge, underground water and solidifying agent during the solidification process.

4. The construction method for accurately marking the range, depth, and volume of sludge solidification according to claim 3, characterized in that, A connecting rod and a control rod for driving the connecting rod are arranged on the stirring rod, the connecting rod is connected with the cover, and the control rod controls the connecting rod to open or close the cover.

5. The construction method for accurately marking the range, depth, and volume of sludge solidification according to claim 3, characterized in that, The stirring depth sensor comprises an induction light belt, the induction light belt is installed on the protective shell along the axis direction of the stirring rod, and is relatively fixed with the protective shell through a fixed socket; density sensors or pressure sensors are uniformly arranged in the induction light belt, which can reflect the sinking depth of the stirring rod in real time by sensing the changes of the surrounding sludge and air, and monitor the sinking speed of the stirring rod by using the change of the sinking depth slope.

6. The construction method for accurately marking the range, depth, and volume of sludge solidification according to claim 3, wherein The stirring depth sensor is a laser range finder installed at the end of the stirring rod away from the stirring head, which monitors the sinking depth of the stirring rod in real time, and monitors the sinking speed of the stirring rod by using the change of the sinking depth slope.

7. The construction method for accurately marking the range, depth, and volume of sludge solidification according to claim 1, wherein The floating excavating equipment is an excavator, and the excavator is provided with a floating box type bottom.

8. The construction method for accurately marking the range, depth, and volume of sludge solidification according to claim 1, wherein, The positioning unit is a GPS positioning module.

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