Device and method for on-site in-situ detection of segregation degree of tailing bubble light soil

Abstract

The invention relates to the technical field of segregation degree detection, in particular to a device and method for on-site in-situ detection of the segregation degree of tailing bubble light soil, and the device comprises a fixing assembly, a detection assembly, a forward earth pressure cell host and a lateral earth pressure cell host; the forward earth pressure cell host and the lateral earth pressure cell host are electrically connected with the detection assembly. The fixing assembly comprises a sleeve capable of being filled with tailing bubble light soil inwards, the detection assembly comprises an adjusting frame, the adjusting frame is slidably connected to the two sides of the interior of the sleeve in a clamped mode, a forward soil pressure box is installed on the inner bottom face of the adjusting frame, and a lateral soil pressure box is fixed to the inner side face of the adjusting frame. The positive soil pressure and the lateral soil pressure of the tailing bubble light soil at different filling positions are obtained through the detection assembly, the variation amplitudes are calculated respectively, and then the segregation degree of the tailing bubble light soil is evaluated. The method is high in operability, simple and convenient, the position needing to be detected can be freely adjusted according to field requirements, and the method has wide application prospects.

Description

Technical Field

[0001] The invention relates to the field of detection technology, and in particular to a device and method for on-site in-situ detection of the segregation degree of tailings air bubbles and lightweight soil. Background Art

[0002] Tailings bubble lightweight soil uses waste tailings as admixtures. The foaming agent is fully foamed mechanically through the foaming system of the foaming machine, and the foam is evenly mixed with the tailings and cement slurry. Then, it is cast-in-place or molded through the pumping system of the foaming machine. After natural curing, it forms a new type of lightweight building material with a large number of closed pores. It is widely used in roadbed filling. In fact, when filling the roadbed, a layered filling method is adopted, with about one layer every two meters. However, after the tailings bubble lightweight soil is poured, due to gravity, the tailings aggregate will slowly sink, causing segregation and affecting the construction quality. Therefore, after filling, it is necessary to evaluate whether the filling layer is segregated to judge the filling effect.

[0003] A Chinese invention patent (publication number: CN114859024A) has published a C60 high-strength self-compacting concrete high-throw segregation test device, and a Chinese invention patent (publication number: CN217133169U) has published a large-drop free-fall pouring concrete anti-segregation performance detection device. The objects of these two patents are to detect the segregation of concrete, which is not suitable for bubble lightweight soil. For example, a Chinese invention patent (publication number: CN112014276A) has published a filling body stratification segregation degree detection method and model construction method. This method evaluates the segregation degree by drilling and sampling the filling body and analyzing the average particle size of the tailings; in addition, a Chinese invention patent (publication number: CN115015110A) provides a foam lightweight soil stratification detection device and detection method. The principle of this method is to accurately detect whether there is a stratification defect in the foam lightweight soil based on the acceleration curve. However, for the tailings bubble lightweight soil filling project, it is necessary to accurately evaluate the degree of filling segregation on site in real time to facilitate timely adjustment of the proportion and process of the tailings bubble lightweight soil to ensure construction quality. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a device and method for on-site in-situ detection of the segregation degree of tailings bubble lightweight soil, which can perform in-situ detection on-site pouring of tailings bubble lightweight soil and evaluate the segregation of filling.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions.

[0006] The present invention provides a device for on-site in-situ detection of the segregation degree of tailings bubble lightweight soil, comprising a fixing component, a detection component, a forward soil pressure box main unit and a lateral soil pressure box main unit; the forward soil pressure box main unit and the lateral soil pressure box main unit are both electrically connected to the detection component; the fixing component comprises a sleeve capable of filling tailings bubble lightweight soil inwardly, the detection component comprises an adjustment frame, the adjustment frame is slidably clamped on both sides of the inner part of the sleeve, a forward soil pressure box is installed on the inner bottom surface of the adjustment frame, and a lateral soil pressure box is fixed on the inner side surface of the adjustment frame, and the adjustment frames are arranged in an array.

[0007] Furthermore, the forward earth pressure box is installed in the middle of the bottom surface of the adjustment frame, and the lateral earth pressure box is installed in the lower section of the inner side surface of the adjustment frame.

[0008] Furthermore, the horizontal plane of the lateral earth pressure box is located above the forward earth pressure box.

[0009] Furthermore, a groove is respectively provided on the left and right sides of the adjustment frame, and the lateral earth pressure box is installed inside the left groove, and the right groove is provided with a groove cover; a first signal line is fixedly installed on the upper left side of the adjustment frame, and the first signal line is electrically connected to the lateral earth pressure box, and a second signal line is fixedly installed on the upper right side of the adjustment frame, and the second signal line is electrically connected to the forward earth pressure box.

[0010] Furthermore, a connecting rod is fixedly installed above the adjusting frame, and a handle is fixedly installed on the upper end of the connecting rod.

[0011] Furthermore, both sides of the sleeve are provided with slide grooves, and the adjustment frame is vertically slidably connected inside the slide grooves, and a limit rod is fixedly installed on the top of the sleeve, and the limit rod crosses the adjustment frame so that the adjustment frame cannot be separated from the sleeve.

[0012] Furthermore, the four corners of the upper end of the sleeve are fixedly installed with lifting rings, and connecting holes are opened on both sides of the sleeve, the side where the connecting holes are located avoids the side of the slide groove, and the connecting holes are connected with the interior of the sleeve.

[0013] Furthermore, limiting screws are provided on both sides of the upper part of the sleeve, one end of the limiting screw extends into the interior of the sleeve to the slide groove, and one end of the limiting screw is tightly pressed against the adjustment frame.

[0014] Furthermore, a mounting ear is fixedly mounted on the outer top side of the adjustment frame, and a laser rangefinder is vertically fixedly mounted on the mounting ear.

[0015] The present invention also provides a method for on-site in-situ detection of the segregation degree of tailings bubble lightweight soil, which is performed according to a device for on-site in-situ detection of the segregation degree of tailings bubble lightweight soil, and the steps are as follows:

[0016] Step 1: Use a laser rangefinder to adjust the depth of the detection components inserted into the casing so that the detection components are vertically equidistantly distributed. There are 5 layers in total, from the top to the bottom, which are the 1st to 5th layers. Each layer is fixed by a limit screw.

[0017] Step 2: vertically place the casing on the testing site, connect the lateral earth pressure box host to the first signal line, and connect the forward earth pressure box host to the second signal line;

[0018] Step 3: Fill the tailings bubble lightweight soil, and the tailings bubble lightweight soil enters the casing through the connecting hole until it is completely filled. At this time, the positive soil pressure of the i-th layer positive soil pressure box at the initial filling time t0 is obtained through the positive soil pressure box host. The lateral earth pressure of the lateral earth pressure box of the i-th layer at the initial filling time t0 is obtained by the lateral earth pressure box host:

[0019] Step 4: When the tailings bubble lightweight soil reaches the initial setting time t, record the positive earth pressure σ of the positive earth pressure box of the i-th layer again vi,t and the lateral earth pressure σ of the lateral earth pressure box of the i-th layer hi,t ;

[0020] Step 5: Calculate the positive earth pressure variation amplitude Δ of the i-th layer of tailings bubble lightweight soil at the initial filling time t0 and the initial setting time t σ,vi and the lateral earth pressure variation Δ σ,hi , the calculation formula is as follows:

[0021]

[0022]

[0023] Step 6: If the positive earth pressure change amplitude of the i-th layer of tailings bubble lightweight soil Δ σ,vi and the lateral earth pressure variation Δ σ,hi If the positive soil pressure variation range Δ σ,vi and the lateral earth pressure variation Δ σ,hi If one or both of them are greater than 10%, it is considered that the tailings bubble lightweight soil has segregated;

[0024] Step 7. After data collection is completed, the fixing assembly and detection assembly are pulled out and cleaned through the lifting ring, and the detection position is refilled with tailings bubble lightweight soil to complete the detection.

[0025] The technical effect of the present invention is as follows: when in use, the forward soil pressure and lateral soil pressure at different positions in the filling layer are detected by adopting the detection component, and then the segregation degree of the tailings bubble lightweight soil is detected and analyzed on site, which is convenient for analysis and convenient for freely adjusting the points to be detected according to needs. It has strong applicability and is convenient for use in the filling of tailings bubble lightweight soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the overall structure of the present invention from another angle;

[0028] Figure 3 It is a schematic diagram of the overall structure of the fixed component after front section in the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the fixed component in the present invention;

[0030] Figure 5 It is a schematic structural diagram of another angle fixing component in the present invention;

[0031] Figure 6 It is a structural schematic diagram of the detection component in the present invention;

[0032] Figure 7 It is a structural schematic diagram of another angle of the detection component in the present invention;

[0033] Figure 8 It is a structural schematic diagram of a part of A in the present invention after being partially enlarged;

[0034] Fig. 9 It is a structural schematic diagram of a part of B in the present invention after being partially enlarged;

[0035] In the figure: 1. fixing component; 101. sleeve; 102. slide groove; 103. limit rod; 104. lifting ring; 105. connecting hole; 106. limit screw; 2. detection component; 201. adjustment frame; 202. mounting frame; 203. forward earth pressure box; 204. lateral earth pressure box; 205. groove cover plate; 206. groove; 207. first signal line; 208. second signal line; 209. connecting rod; 2010. handle; 2011. mounting ear; 2012. laser rangefinder; 3. lateral earth pressure box host; 4. forward earth pressure box host. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1:

[0038] See also Figure 1-9 As shown, a device for in-situ detection of the segregation degree of tailings bubble lightweight soil on site comprises a fixing assembly 1 and a detection assembly 2. The fixing assembly 1 comprises a casing 101 capable of filling tailings bubble lightweight soil inwardly, the detection assembly 2 is slidably clamped inside the casing 101, and the detection assemblies 2 are arranged in an array; the detection assembly 2 comprises an adjustment frame 201, the adjustment frame 201 is slidably clamped inside the casing 101 on both sides, a positive earth pressure box 203 is installed in the middle of the bottom surface of the adjustment frame 201, or the bottom of the adjustment frame is empty, and a mounting frame 202 is installed, and a positive earth pressure box 203 is fixedly installed in the middle position of the mounting frame 202, and a lateral earth pressure box 204 is fixedly installed in the lower left section of the adjustment frame 201. When in use, by adjusting the position of each detection component 2 inside the casing 101, the position of the lateral earth pressure box 204 and the forward earth pressure box 203 is adjusted, which is suitable for detection at different detection points. After the adjustment is completed, the tailings bubble lightweight soil is placed on the construction site to fill the tailings bubble lightweight soil. During the filling, the tailings bubble lightweight soil is filled inside the casing 101. After filling, the filled tailings bubble lightweight soil is detected through the external lateral earth pressure box 3 and the forward earth pressure box main unit 4, and the change range of the detection results is compared to judge the segregation situation. After the detection is completed, when the tailings bubble lightweight soil is in the initial solidification state, the technical device is taken out to complete the detection.

[0039] As a technical optimization solution of the present invention, the horizontal plane of the lateral earth pressure box 204 is located above the forward earth pressure box 203, and a groove 206 is respectively provided on the left and right sides of the lower section of the adjustment frame 201, and the lateral earth pressure box 204 is installed inside the left groove 206, and the right groove 206 is a reserved groove for subsequent addition of detection equipment, and the right groove 206 is provided with a groove cover 205; a first signal line 207 is fixedly installed on the upper left side of the adjustment frame 201, and the first signal line 207 is electrically connected to the lateral earth pressure box 204, a second signal line 208 is fixedly installed on the upper right side of the adjustment frame 201, and the second signal line 208 is electrically connected to the forward earth pressure box 203, and a connecting rod 208 is fixedly installed between the upper and lower parts of the adjustment frame 201 09, and a handle 2010 is fixedly installed on the upper end of the connecting rod 209, a mounting ear 2011 is fixedly installed on one side of the upper end of the adjustment frame 201, and a laser rangefinder 2012 is vertically fixedly installed on the mounting ear 2011. When in use, the handle 2010 is used to facilitate the adjustment of the height of the adjustment frame 201, and the laser rangefinder 2012 is used to facilitate the equidistant distribution of the lateral earth pressure box 204 and the forward earth pressure box 203, so as to adjust the positions of the lateral earth pressure box 204 and the forward earth pressure box 203, and when collecting data, the external lateral earth pressure box host 3 and the forward earth pressure box host 4 are respectively connected to the first signal line 207 and the second signal line 208, so as to facilitate data collection and use.

[0040] As a technical optimization solution of the present invention, sliding grooves 102 are provided on both sides of the interior of the sleeve 101, and the adjusting frame 201 is vertically slidably connected to the interior of the sliding groove 102, and a limiting rod 103 is fixedly installed on the top of the sleeve 101, and the limiting rod 103 crosses the adjusting frame 201 so that the adjusting frame 201 cannot be separated from the sleeve, and hanging rings 104 are fixedly installed at the four corners of the upper end of the sleeve 101, and connecting holes 105 are provided on both sides of the sleeve 101, and the side where the connecting hole 105 is located avoids the sliding groove side, and the connecting hole 105 is connected with the interior of the sleeve 101. A plurality of limit screws 106 are evenly distributed on both sides of the upper outside of the sleeve 101. One end of the limit screw 106 extends into the interior of the slide groove 102 to the slide groove, and one end of the limit screw 106 is tightly pressed against the adjustment frame 201. By adopting the limit screw 106, it is convenient to fix and adjust the position of the detection component 2, and when adjusting, the adjustment frame 201 moves inside the slide groove 102, which is convenient to use.

[0041] The present invention also provides a method for on-site in-situ detection of the segregation degree of tailings bubble lightweight soil, which is performed according to a device for on-site in-situ detection of the segregation degree of tailings bubble lightweight soil, and the method is as follows:

[0042] Step 1: First, use the laser rangefinder 2012 to adjust the depth of the detection component 2 inserted into the casing 101, so that the detection components 2 are vertically equidistantly distributed, divided into 5 layers in total, from top to bottom, namely the 1st to 5th layers, and each layer is fixed by a limit screw 106.

[0043] Step 2: Place the casing 101 vertically on the testing site, connect the lateral earth pressure box host 3 to the first signal line 207 , and connect the forward earth pressure box host 4 to the second signal line 208 .

[0044] Step 3: Fill the tailings bubble light soil, the tailings bubble light soil enters the casing 101 through the connecting hole 105 until it is completely filled. At this time, the soil pressure of the i-th layer positive soil pressure box 203 at the initial filling time t0 is obtained through the positive soil pressure box host 4. The lateral earth pressure of the lateral earth pressure box 204 of the i-th layer at the initial filling time t0 is obtained by the lateral earth pressure box host 3.

[0045] Step 4: When the tailings bubble lightweight soil reaches the initial setting time t, the positive soil pressure σ of the i-th layer positive soil pressure box 203 is recorded again vi,t and the lateral earth pressure σ of the lateral earth pressure box 204 of the i-th layer hi,t .

[0046] Step 5: Calculate the positive earth pressure variation amplitude Δ of the i-th layer of tailings bubble lightweight soil at the initial filling time t0 and the initial setting time t σ,vi and the lateral earth pressure variation Δ σ,hi , the calculation formula is as follows:

[0047]

[0048]

[0049] Step 6: If the positive earth pressure change amplitude of the i-th layer of tailings bubble lightweight soil Δ σ,vi and the lateral earth pressure variation Δ σ,hi If the positive soil pressure variation range Δ σ,vi and the lateral earth pressure variation Δ σ,hi If one or both of them are greater than 10%, it is considered that the fill tailings bubble lightweight soil has segregated.

[0050] Step 7: After data collection is completed, the fixing component 1 and the detection component 2 are pulled out and cleaned through the lifting ring 104, and the detection position is refilled with tailings bubble lightweight soil to complete the detection.

[0051] Embodiment 2:

[0052] According to Example 1, when the device of the present invention is actually used, the actual process and data of the measurement are as follows:

[0053] The device is placed in a foundation pit with a height of 2.0m where tailings bubble lightweight soil is to be filled. The distance between the detection components is adjusted by a laser rangefinder so that the distance between them is 0.4m, with a total of 5 layers, from top to bottom, namely the 1st to 5th layers.

[0054] Fill the pre-mixed tailings bubble lightweight soil, and stop filling when the tailings bubble lightweight soil filling height reaches 2m. At this time, collect the forward earth pressure and lateral earth pressure data of the 1st to 5th layers of tailings bubble lightweight soil in sequence, and the results are as follows:

[0055] Layer 1: Initial time t0, positive earth pressure 2.41 kN / m 2 , lateral earth pressure 0.27kN / m 2 ;

[0056] Layer 2: Initial state t0, positive earth pressure 4.83kN / m 2 , lateral earth pressure 0.54kN / m 2 ;

[0057] Layer 3: Initial state t0, positive earth pressure 7.22 kN / m 2 , lateral earth pressure 0.82kN / m 2 ;

[0058] Layer 4: Initial state t0, positive earth pressure 9.65kN / m 2 , lateral earth pressure 1.22kN / m 2 ;

[0059] Layer 5: Initial state t0, positive earth pressure 12.11 kN / m 2 , lateral earth pressure 1.46kN / m 2 .

[0060] After 2 hours, the initial setting time t of the tailings bubble lightweight soil is reached, and the soil pressure and wave velocity data of the 1st to 5th layers of tailings bubble lightweight soil are collected again. The results are as follows:

[0061] Layer 1: Initial setting time t, positive earth pressure σ v1,t 2.24kN / m 2, lateral earth pressure σ h1,t 0.25kN / m 2 ;

[0062] Layer 2: Initial setting time t, positive earth pressure σ v2,t 4.63kN / m 2 , lateral earth pressure σ h2,t 0.57kN / m 2 ;

[0063] Layer 3: Initial setting time t, positive earth pressure σ v3,t 7.51 kN / m 2 , lateral earth pressure σ h3,t 0.84kN / m 2 ;

[0064] Layer 4: Initial setting time t, positive earth pressure σ v4,t 10.12 kN / m 2 , lateral earth pressure σ h4,t 1.20kN / m 2 ;

[0065] Layer 5: Initial setting time t, positive earth pressure σ v5,t 12.87 kN / m 2 , lateral earth pressure σ h5,t 1.41 kN / m 2 .

[0066] Calculate the positive earth pressure variation amplitude Δ of the 1st to 5th layers of tailings bubble lightweight soil at the initial filling time t0 and the initial setting time t σ,vi and the lateral earth pressure variation Δ σ,hi as follows:

[0067] Layer 1: Variation of positive earth pressure Δ σ,v1 is 7.1%, and the variation range of lateral earth pressure Δ σ,h1 7.4%

[0068] Layer 2: Variation of positive earth pressure Δ σ,v2 is 4.1%, and the lateral earth pressure variation Δ σ,h2 5.6%

[0069] Layer 3: Variation of positive earth pressure Δ σ,v3 is 4.0%, and the lateral earth pressure variation range Δ σ,h3 2.4%;

[0070] Layer 4: Variation of positive earth pressure Δ σ,v4 is 4.9%, and the lateral earth pressure variation range Δ σ,h4 1.6%;

[0071] Layer 5: Variation of positive earth pressure Δ σ,v5 is 6.3%, and the lateral earth pressure variation range Δ σ,h5 It is 3.4%.

[0072] To judge the degree of segregation, the change amplitude of positive soil pressure of each layer of tailings bubble lightweight soil at the initial pouring and after 2h initial setting Δ σ,vi and the lateral earth pressure variation Δ σ,hi All of them are within 10%, indicating that the tailings bubble lightweight soil has good homogeneity and slurry stability, so it is believed that the filled tailings bubble lightweight soil will not segregate.

[0073] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0074] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for on-site in-situ detection of the segregation degree of tailings bubbles and lightweight soil, characterized by: It includes a fixing component, a detection component, a forward earth pressure box main unit and a lateral earth pressure box main unit; the forward earth pressure box main unit and the lateral earth pressure box main unit are both electrically connected to the detection component; the fixing component includes a sleeve that can be filled with tailings bubble lightweight soil inwardly, and the detection component includes an adjustment frame, which is slidably clamped on both sides of the inner side of the sleeve, a forward earth pressure box is installed on the inner bottom surface of the adjustment frame, and a lateral earth pressure box is fixed on the inner side surface of the adjustment frame, and the adjustment frames are arranged in an array.

2. The device for on-site in-situ detection of the segregation degree of tailings bubbles and lightweight soil according to claim 1, characterized in that: The forward earth pressure box is installed in the middle of the bottom surface of the adjustment frame, and the lateral earth pressure box is installed in the lower section of the inner side surface of the adjustment frame.

3. The device for on-site in-situ detection of the segregation degree of tailings bubbles and lightweight soil according to claim 1 is characterized in that: The horizontal plane of the lateral earth pressure box is located above the forward earth pressure box.

4. The device for on-site in-situ detection of the segregation degree of tailings bubble lightweight soil according to claim 1 is characterized in that: A groove is respectively provided on the left and right sides of the adjustment frame, and the lateral earth pressure box is installed inside the left groove, and the right groove is provided with a groove cover; a first signal line is fixedly installed on the upper left side of the adjustment frame, and the first signal line is electrically connected to the lateral earth pressure box, and a second signal line is fixedly installed on the upper right side of the adjustment frame, and the second signal line is electrically connected to the forward earth pressure box.

5. The device for on-site in-situ detection of the segregation degree of tailings bubbles and lightweight soil according to claim 1 is characterized by: A connecting rod is fixedly installed between the upper parts of the adjusting frame, and a handle is fixedly installed on the upper end of the connecting rod.

6. The device for on-site in-situ detection of the segregation degree of tailings bubbles and lightweight soil according to claim 5, characterized in that: Slide grooves are provided on both sides of the sleeve, and the adjustment frame is vertically slidably connected inside the slide grooves, and a limit rod is fixedly installed on the top of the sleeve, and the limit rod crosses the adjustment frame so that the adjustment frame cannot be separated from the sleeve.

7. The device for on-site in-situ detection of the segregation degree of tailings bubbles and lightweight soil according to claim 1 is characterized by: The four corners of the upper end of the sleeve are fixedly installed with lifting rings, and the two sides of the sleeve are opened with connecting holes, the side where the connecting holes are located avoids the side of the slide groove, and the connecting holes are connected with the interior of the sleeve.

8. The device for on-site in-situ detection of the segregation degree of tailings bubble lightweight soil according to claim 7, characterized in that: Limit screws are arranged on both sides of the upper part of the sleeve, one end of the limit screw extends into the interior of the sleeve to the slide groove, and one end of the limit screw is tightly pressed against the adjustment frame.

9. The device for on-site in-situ detection of the segregation degree of tailings bubble lightweight soil according to claim 1, characterized in that: A mounting ear is fixedly mounted on the top side of the adjusting frame, and a laser rangefinder is vertically fixedly mounted on the mounting ear.

10. A method for on-site in-situ detection of the degree of segregation of tailings bubble lightweight soil, characterized in that: According to the device for on-site in-situ detection of the degree of segregation of tailings bubbles and lightweight soil according to claims 1 to 9, the method is as follows: Step 1: Use a laser rangefinder to adjust the depth of the detection components inserted into the casing so that the detection components are vertically equidistantly distributed. There are 5 layers in total, from the top to the bottom, which are the 1st to 5th layers. Each layer is fixed by a limit screw. Step 2: vertically place the casing on the testing site, connect the lateral earth pressure box host to the first signal line, and connect the forward earth pressure box host to the second signal line; Step 3: Fill the tailings bubble lightweight soil. The tailings bubble lightweight soil enters the casing through the connecting hole until it is completely filled. At this time, the positive soil pressure of the i-th layer positive soil pressure box at the initial filling time t0 is obtained through the positive soil pressure box host. The lateral earth pressure of the lateral earth pressure box of the i-th layer at the initial filling time t0 is obtained by the lateral earth pressure box host: Step 4: When the tailings bubble lightweight soil reaches the initial setting time t, record the positive earth pressure σ of the positive earth pressure box of the i-th layer again vi,t and the lateral earth pressure σ of the lateral earth pressure box of the i-th layer hi,t ; Step 5: Calculate the positive earth pressure variation amplitude Δ of the i-th layer of tailings bubble lightweight soil at the initial filling time t0 and the initial setting time t σ,vi and the lateral earth pressure variation Δ σ,hi , the calculation formula is as follows: Step 6: If the positive earth pressure change amplitude of the i-th layer of tailings bubble lightweight soil Δ σ,vi and the lateral earth pressure variation Δ σ,hi If the positive soil pressure variation range Δ σ,vi and the lateral earth pressure variation Δ σ,hi If one or both of them are greater than 10%, it is considered that the tailings bubble lightweight soil has segregated; Step 7. After data collection is completed, the fixing assembly and detection assembly are pulled out and cleaned through the lifting ring, and the detection position is refilled with tailings bubble lightweight soil to complete the detection.

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