Soil in-situ detection rotary spraying remediation device

Abstract

The utility model discloses a soil in-situ detection jet grouting remediation device, which comprises a fluorescence spectrum analysis detection system, the fluorescence spectrum analysis detection system comprises a drill rod, an optical processing module, a signal module, a control module and a power supply module, and the optical processing module, the signal module, the control module and the power supply module are arranged in the drill rod. And a high-pressure rotary jet grouting system is mounted in the drill rod. The physical and chemical properties of the polluted soil are rapidly detected and transmitted to the control system through the control module data line, and the control system regulates the dosage of chemicals according to the data and accurately injects and adds the chemicals in real time.

Description

Technical Field

[0001] This utility model relates to the field of soil remediation, and in particular to a soil in-situ detection and jet grouting remediation device. Background Technology

[0002] In-situ injection-high pressure jet grouting technology has certain advantages in soil remediation.

[0003] High-pressure jet grouting technology involves drilling into the soil to a predetermined depth, then spraying a prepared agent from a nozzle. The agent mixes with the contaminated soil, decomposing or fixing the pollutants and eliminating health risks.

[0004] Current high-pressure jet grouting methods mostly rely on existing geological survey data. However, this data collection involves in-situ soil testing, which is time-consuming, and its accuracy directly affects the quality of the jet grouting remediation, resulting in low remediation efficiency. Furthermore, high-pressure jet grouting uses fixed reagent ratios, but the degree of soil contamination is difficult to vary vertically, leading to reagent waste. Therefore, further improvements are needed to address these issues.

[0005] Chinese patent CN111398327A discloses an in-situ detection device for heavy metal pollution in soil based on X-ray fluorescence spectroscopy. The device includes an XRF unit connected to a drill pipe and a ground terminal. The XRF unit comprises a housing, an optical processing module, a signal processing module, a control system module, and a power circuit module. A window is provided on the side of the housing. The control system module is connected to the signal processing module and the ground terminal. The power circuit module is electrically connected to the optical processing module, the signal processing module, and the control system module. This device can only perform in-situ detection of heavy metal pollution in soil and cannot simultaneously perform high-pressure jet grouting remediation. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to provide a soil in-situ detection and jet grouting remediation device to address the shortcomings of existing technology. This device is used to first perform in-situ soil detection and then perform soil jet grouting remediation.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a soil in-situ detection and jet grouting remediation device, including a fluorescence spectral analysis detection system, the fluorescence spectral analysis detection system including a drill rod, an optical processing module, a signal module, a control module and a power supply module installed in the drill rod, a high-pressure jet grouting system installed in the drill rod, and the high-pressure jet grouting system being connected to the control module and the power supply module respectively.

[0008] The fluorescence spectroscopy analysis system can quickly detect the physical and chemical properties of contaminated soil, and the dosage of the reagent can be precisely adjusted and injected into the high-pressure rotary jet grouting system based on the detection data.

[0009] In a preferred embodiment of the present invention, the high-pressure jet grouting system includes a liquid channel installed in the inner cavity of the drill rod, a central hole, and a drill rod nozzle installed at the lower part of the drill rod and communicating with the liquid channel and the bottom of the central hole respectively. The data transmission channel is connected to the signal module and the control module.

[0010] After drilling, water is injected through the central hole and sprayed out through the drill rod nozzle to enlarge the hole. A pre-concentrated chemical solution is introduced through the solution channel and sprayed out through the drill rod nozzle for soil remediation.

[0011] The high-pressure rotary jet grouting system injects grout through a drill pipe nozzle located at the top of the drill bit and the bottom of the drill pipe; the key components of the fluorescence spectroscopy analysis and detection system, namely the optical module, signal module, control module, and power module, are located inside the conical drill bit; the fluorescence spectroscopy analysis and detection system and the high-pressure rotary jet grouting system operate independently of each other, following the in-situ borehole detection, control system regulation, and grouting repair procedures.

[0012] In a preferred embodiment of this utility model, the drill rod includes a tapered drill bit, and the optical processing module is installed at the drill bit position of the tapered drill bit.

[0013] The optical processing module is installed at the drill bit position of the conical drill bit, which allows for more accurate soil detection when installed at the lower part of the drill rod with less disturbance.

[0014] In a preferred embodiment of the present invention, the optical processing module includes a detection port installed on the conical surface of the conical drill bit, the detection port being fitted with an arc-shaped transparent glass, and an optical module being installed inside the detection port.

[0015] During the drilling process, the soil is detected through the detection port on the conical surface of the drill bit, which is installed on the conical drill bit. The detection can be carried out while drilling through the optical processing module.

[0016] In a preferred embodiment of the present invention, the optical module includes an X-ray tube, a primary filter and a primary collimator connected in sequence, and also includes a light source receiving detector, a secondary collimator and a secondary filter connected in sequence. The primary collimator and the secondary filter are both installed at an angle to the surface of the fixed plate.

[0017] Both the primary collimator and the secondary filter are installed at an angle to the surface of the fixed plate. When high-energy X-rays irradiate the soil to be tested, the atoms of the soil are excited, the inner electrons transition, and emit secondary X-rays with specific energy or wavelength. These secondary X-rays are collected and analyzed by a light source receiving detector. Compared with straight-line irradiation and reflection, this method reduces the difficulty of collecting energy or wavelength.

[0018] In a preferred embodiment of this invention, the center lines of the primary collimator and the secondary filter are symmetrical about the perpendicular plane of the fixed plate.

[0019] In a preferred embodiment of this utility model, the angle between the centerline of the secondary collimator and the secondary filter and the surface of the fixed plate is 30°-60°.

[0020] The center lines of the secondary collimator and the secondary filter form an angle of 30°-60° with the surface of the fixed plate, providing good arrangement space inside the drill bit.

[0021] In a preferred embodiment of the present invention, the signal module includes a detection signal transmission line connected to the X-ray tube and a light source receiving and detection signal line connected to the light source receiving detector. The detection signal transmission line and the light source receiving and detection signal line are respectively connected to the signal module, and the signal module is then connected in sequence to a data transmission line, a control module, and a power supply module.

[0022] The principle of this novel fluorescence spectroscopy analysis and detection technology is as follows: In the fluorescence spectroscopy analysis and detection system, the X-ray tube generates X-rays under the control of the high-voltage power supply in the power module. The X-rays are filtered by a primary filter and a primary collimator before irradiating the soil sample in the detection window. The fluorescence excited by the soil sample is filtered by a secondary collimator and a secondary filter before reaching the light source receiver detector crystal. The light source receiver detector circuit amplifies and statistically analyzes the signal; finally, it is transmitted to the external control system through the signal module and control module. The control system controls different combinations of filters, collimators, tube pressure, and tube current based on different soil samples outside the conical drill bit to perform detection.

[0023] The technical principle of this high-pressure jet grouting system is as follows: The drill rod cavity in the high-pressure jet grouting system contains a central hole, a data transmission channel, and a chemical channel. The central hole is for conveying clean water to the borehole. The data transmission channel transmits the detection signal from the fluorescence spectroscopy analysis system to the external control system. The chemical channel mainly transmits the chemical pumped in by the high-pressure chemical pump through the chemical dosing hose to the channel for grouting at the rated depth. The central hole channel and the chemical channel share a single drill rod nozzle. Rubber check valves are installed inside both the central hole and the chemical channel near the drill rod nozzle. The bottom of the drill rod in the high-pressure jet grouting system is fitted with a tapered drill bit and rotates with the drill rod. The drill rod depth detector in the high-pressure jet grouting control system feeds back the grouting depth to the data analysis and control system. Combined with the fluorescence spectroscopy detection control system and automatic chemical supply data, this provides data for subsequent applications.

[0024] The technical principle of the data analysis and control system of this invention is as follows: The data analysis and control system analyzes the soil detection signals received, and performs a chemical reaction between the pre-set remediation agent (such as an oxidizing agent or a stabilizing agent) and soil pollutants (heavy metals or organic matter). The system calculates and matches the agent dosage according to the known pollutant concentration (the concentration of heavy metals or organic matter detected and analyzed) in the chemical reaction formula. The control system achieves accurate agent dosing by transmitting signals to the electric valve opening degree on the agent outlet pipe and to the electric valve opening degree on the clean water outlet pipe.

[0025] Compared with existing technologies, the advantages of this invention are as follows: ① The detection and control system uses a power module to control an X-ray tube to generate X-rays that irradiate the soil sample being tested. The sample is excited and fluorescence enters the detector crystal. The circuit on the detector crystal amplifies and statistically analyzes the fluorescence signal and transmits it to the control system via a data line, achieving instantaneous detection; ② The high-pressure rotary jet grouting control system transmits data to the control system based on the drill pipe nozzle depth. Combined with the detection data, it enables investigation of different geological strata; ③ The automatic chemical supply control system automatically matches data according to the set signal given by the control system. It adjusts the electric valves of the chemical pipeline and the clean water pipeline via a data line to match the concentration of the injected chemical solution with the required concentration at the grouting location, enabling chemical remediation in different geological strata. The entire control system has a fast processing speed, high efficiency in remediation, reduces the construction cycle, and saves on chemical costs. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the planar structure of the soil in-situ detection and jet grouting remediation system of this utility model;

[0027] Figure 2 yes Figure 1 Schematic diagram of the fluorescence spectroscopy analysis and detection system in the diagram;

[0028] Figure 3 yes Figure 2 Schematic diagram of the optical module.

[0029] In the picture:

[0030] 1-Fluorescence spectroscopy analysis and detection system; 1-1-Conical drill bit; 1-11-Detection port; 1-12-Circular arc-shaped transparent glass; 1-2-Optical module; 1-21-X-ray tube; 1-22-Primary filter; 1-23-Primary collimator; 1-24-Secondary collimator; 1-25-Secondary filter; 1-26-Light source receiving detector; 1-3-Signal module; 1-31-Detection signal transmission line; 1-32-Light source receiving and detection signal line; 1-33-Data transmission line; 1-4-Control module; 1-5-Power supply module;

[0031] 2-High-pressure jet grouting system; 2-1-Drill rod; 2-2-Drill rod nozzle; 2-3-Center hole; 2-4-Medication channel; 2-5-Data transmission channel;

[0032] 3-Automatic dosing and mixing system; 3-1-Dosing mixing tank; 3-11-Electric valve for liquid dispensing pipe; 3-2-Clear water tank; 3-21-Electric valve for clear water dispensing pipe; 3-3-Mixer; 3-4-High-pressure dosing pump; 3-5-Dosing hose; 3-6-Data transmission line;

[0033] 3-31- Data cable B for electric valve on clean water pipeline; 3-32- Data cable A for electric valve on liquid medicine pipeline;

[0034] 3-41- Metering pump for the dosing mixing tank;

[0035] 3-51-Level gauge for dosing and mixing tank;

[0036] 4-Control system; 4-1-Operator panel; 4-2-Parameter setting window. Detailed Implementation

[0037] Example 1

[0038] like Figure 1 As shown, a soil in-situ detection and jet grouting remediation device comprises four parts: a fluorescence spectral analysis and detection system 1, a high-pressure jet grouting system 2, an automatic dosing and mixing system 3, and a control system 4.

[0039] like Figure 2 As shown, the fluorescence spectroscopy analysis and detection system 1 consists of a conical drill bit 1-1, an optical module 1-2, a signal module 1-3, a control module 1-4, and a power supply module 1-5.

[0040] The conical drill bit 1-1 has a detection port 1-11 on one side of its conical surface, and the detection port is equipped with a high-strength arc-shaped transparent glass 1-12; the inner cavity of the conical drill bit 1-1 encloses and fixes the optical module 1-2, the signal module 1-3, the control module 1-4, and the power module 1-5.

[0041] The optical processing module includes a detection port 1-11 installed on the conical surface of the conical drill bit 1-1. The detection port 1-11 is fitted with an arc-shaped transparent glass 1-12, and an optical module 1-2 is installed inside the detection port 1-11.

[0042] like Figure 3As shown, the optical module 1-2 includes an X-ray tube 1-21, a primary filter 1-22, and a primary collimator 1-23 connected in sequence, and also includes a light source receiver detector 1-26, a secondary collimator 1-24, and a secondary filter 1-25 connected in sequence. The primary collimator 1-23 and the secondary filter 1-25 are symmetrical about the vertical plane of the fixed plate. Both the primary collimator 1-23 and the secondary filter 1-25 are installed at a 45° angle to the surface of the fixed plate.

[0043] like Figure 2 As shown, the signal module 1-3 includes a detection signal transmission line 1-31 connected to the X-ray tube 1-21 and a light source receiving and detection signal line 1-32 connected to the light source receiving detector 1-26. The detection signal transmission line 1-31 and the light source receiving and detection signal line 1-32 are respectively connected to the signal module 1-3. The signal module 1-3 is then connected in sequence to the data transmission line 1-33, the control module 1-4 and the power supply module 1-5.

[0044] like Figure 1 As shown, the high-pressure jet grouting system 2 consists of a drill rod nozzle 2-2, a central hole 2-3, a chemical solution channel 2-4, and a data transmission channel 2-5. The drill rod 2-1 is an acid and alkali resistant steel pipe lined with resin; its bottom is connected to a tapered drill bit 1-1, and its top has a drill rod 2-1 connection port. The drill rod nozzle 2-2 is located in the lower part of the drill rod 2-1, and its end is connected to the chemical solution channel 2-4. The central hole 2-3, the chemical solution channel 2-4, and the data transmission channel 2-5 are fixed parallel to each other within the inner cavity of the drill rod 2-1.

[0045] like Figure 1As shown, the automatic dosing and mixing system 3 consists of a dosing and mixing tank 3-1, a clean water tank 3-2, a mixer 3-3, a high-pressure dosing pump 3-4, a dosing hose 3-5, and a data transmission line 3-6. The dosing and mixing tank 3-1 is a PE mixing tank with a liquid outlet pipe and a drain pipe at the bottom, and a dosing port and a tap water inlet pipe at the top. The clean water tank 3-2 has a tap water inlet pipe on top and a clean water outlet pipe at the bottom. The mixer 3-3 is located on top of the dosing and mixing tank 3-1, and a paddle-type agitator is located at the bottom of the mixer 3-3. The high-pressure dosing pump 3-4 is an acid and alkali resistant high-pressure pump. The outlet of the dosing mixing tank 3-1 is equipped with a liquid dispensing pipe electric valve 3-11, which is connected to one inlet of the high-pressure dosing pump 3-4. The outlet of the clear water tank 3-2 is equipped with a clear water dispensing pipe electric valve 3-21, which is connected to one inlet of the high-pressure dosing pump 3-4. The outlet of the high-pressure dosing pump 3-4 is equipped with a dosing hose 3-5, which is connected to the inlet of the liquid channel 2-4. The dispensing pipe electric valve 3-11, the clear water dispensing pipe electric valve 3-21, and the high-pressure dosing pump 3-4 are all connected to the control system 4 via a data transmission line 3-6. The control system 4 is connected to the high-pressure dosing pump 3-4 and the data transmission channel 2-5 on the drill rod 2-1 via the data transmission line 3-6.

[0046] The technical principle of this automatic dosing and mixing system is as follows: The control system analyzes the soil detection signals received, and performs a chemical reaction between the pre-set remediation agent (such as an oxidizing agent or a stabilizing agent) and soil pollutants (heavy metals or organic matter). The dosage of the agent is calculated according to the known pollutant concentration (the concentration of heavy metals or organic matter detected and analyzed) in the chemical reaction formula. The control system achieves accurate dosing of the agent by transmitting signals to the electric valve opening degree on the agent outlet pipe and to the electric valve opening degree on the clean water outlet pipe.

[0047] The automatic supply control system contains two or more PE tanks: a reagent dosing tank and a water tank. The reagent concentration in the PE tank is set to a standard concentration (e.g., ferrous sulfate standard concentration 0.06 mol / L), and the reagent dosing data is controlled by the control system. Tap water is added to the PE water tank. The electric valve of the dosing tank pipeline receives signals from the control system to control the valve opening degree, ensuring that the experimental reagent supply matches the demand.

Claims

1. A soil in-situ detection and jet grouting remediation device, comprising a fluorescence spectral analysis detection system (1), wherein the fluorescence spectral analysis detection system (1) comprises a drill rod (2-1), an optical processing module, a signal module (1-3), a control module (1-4), and a power supply module (1-5) installed in the drill rod (2-1), characterized in that, A high-pressure jet grouting system (2) is installed in the drill pipe (2-1), and the high-pressure jet grouting system (2) is connected to the control module (1-4) and the power module (1-5) respectively; The optical processing module includes a detection port (1-11) installed on the conical surface of the conical drill bit (1-1), an arc-shaped transparent glass (1-12) installed in the detection port (1-11), and an optical module (1-2) installed inside the detection port (1-11).

2. The soil in-situ detection and jet grouting remediation device according to claim 1, characterized in that, The high-pressure rotary jet grouting system (2) includes a liquid channel (2-4) installed in the inner cavity of the drill rod (2-1), a central hole (2-3), a drill rod nozzle (2-2) installed in the lower part of the drill rod (2-1) and connected to the bottom of the liquid channel (2-4) and the central hole (2-3), and a data transmission channel (2-5) connected to the signal module (1-3) and the control module (1-4).

3. The soil in-situ detection and jet grouting remediation device according to claim 1, characterized in that, The drill rod (2-1) includes the tapered drill bit (1-1), and the optical processing module is installed at the drill bit position of the tapered drill bit (1-1).

4. The soil in-situ detection and jet grouting remediation device according to claim 3, characterized in that, The optical module (1-2) includes an X-ray tube (1-21), a primary filter (1-22), and a primary collimator (1-23) connected in sequence, and also includes a light source receiving detector (1-26), a secondary collimator (1-24), and a secondary filter (1-25) connected in sequence. The primary collimator (1-23) and the secondary filter (1-25) are both installed at an angle to the surface of the fixed plate.

5. The soil in-situ detection and jet grouting remediation device according to claim 4, characterized in that, The center lines of the primary collimator (1-23) and the secondary filter (1-25) are symmetrical about the perpendicular plane of the fixed plate.

6. The soil in-situ detection and jet grouting remediation device according to claim 5, characterized in that, The angle between the center lines of the secondary collimator (1-24) and the secondary filter (1-25) and the surface of the fixed plate is 30°-60°.

7. The soil in-situ detection and jet grouting remediation device according to claim 4, characterized in that, The signal module (1-3) includes a detection signal transmission line (1-31) connected to the X-ray tube (1-21) and a light source receiving and detection signal line (1-32) connected to the light source receiving detector (1-26). The detection signal transmission line (1-31) and the light source receiving and detection signal line (1-32) are respectively connected to the signal module (1-3). The signal module (1-3) is then connected in sequence to the data transmission line (1-33), the control module (1-4), and the power supply module (1-5).

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