Soil slope sliding surface detection system of combined bolt electrode and construction and usage methods

Abstract

The invention discloses a detection system for the sliding surface of a soil slope with a combined anchor rod electrode, as well as a construction and use method. The structure includes a combined anchor rod array arranged on the soil slope, a resistance test data processor, and a circuit signal control switch. A number of anchor rods are arranged at equal intervals in one direction on the combined anchor rod array. The anchor rod includes a main anchor rod body, on which a signal box, a nut, a grout stopper, a sealing plug, an electrode ejector, a wire, and a fixing sleeve are successively arranged from top to bottom. The signal box is internally provided with a signal processor, a solar power supply, an electrical measurement sensor, a power switch, and an electrode switch. The inner end of the electrode ejector is embedded in the fixing sleeve and is connected to the signal box through a wire. The structure designed in this solution can accurately locate and prospect the geoelectric characteristics of the sliding ground at different depths of the soil slope, and master the specific position of the most dangerous sliding surface. At the same time, the arrangement method of the combined anchor rod array can play a role in strengthening the soil body during the detection process.

Description

Technical Field

[0001] The present invention relates to the technical field of slope sliding surface exploration, and specifically relates to a slope sliding surface detection system with a combined anchor rod electrode, as well as a construction and use method thereof. Background Art

[0002] China is a country with many natural disasters. Among these natural disasters, landslide disasters account for a certain proportion. The occurrence of landslides is intricately affected by environmental problems such as engineering geology, hydrogeology, and environmental geology. The determination of the sliding surface is the key link in landslide exploration and is also a rather thorny problem in geological exploration engineering. Relevant research shows that there are obvious abnormal fluctuations in the resistance data at the sliding surface, and there is an overall downward trend. Therefore, although the resistivity method is widely used in revealing the geoelectric characteristics and process mechanisms of landslide instability, determining landslide precursor information, etc., it cannot accurately determine the position of its sliding surface. It is only limited to the layout around the landslide perimeter and is difficult to expose the main sliding surface.

[0003] Generally speaking, the existing technologies can only roughly delineate the scope of the landslide body, and cannot perform positioning and fixed-point detection on the sliding surfaces at different positions and depths of the slope soil mass, and accurately determine the position of the main sliding surface. Summary of the Invention

[0004] Object of the Invention: The object of the present invention is to provide a slope sliding surface detection system with a combined anchor rod electrode, as well as a construction and use method thereof, which can accurately locate and explore the geoelectric characteristics of the sliding surfaces at different depths of the soil slope, and master the position of the most dangerous sliding surface.

[0005] Technical Solution: The slope sliding surface detection system with a combined anchor rod electrode of the present invention includes a combined anchor rod array, a resistance test data processor, and a circuit signal control switcher arranged on the slope. A number of anchor rods are arranged at equal intervals in one direction on the combined anchor rod array;

[0006] The anchor rod includes a main anchor rod body. A signal box, a nut, a grout stopper, a sealing plug, an electrode ejector, a wire, and a fixed sleeve are successively arranged on the main anchor rod body from top to bottom. The signal box is internally provided with a signal processor, a solar power supply, an electrical measurement sensor, a power switch, and an electrode switcher. The electrode ejector includes a copper electrode in the shape of an inwardly concave umbrella. An outer fastening sleeve and an inner fastening sleeve are respectively arranged at the inner end and the outer end of the copper electrode. The outer fastening sleeve is connected with a high compression spring, and the high compression spring is connected with the main anchor rod body. The electrode ejector is embedded into the fixed sleeve at the inner end and is connected with the signal box through a wire.

[0007] Preferably, the number of the anchor rods arranged in one direction on the combined anchor rod array is greater than or equal to four.

[0008] Preferably, the signal box is made of acrylic glass material, and the fixed sleeve is made of an insulating material.

[0009] Preferably, the electrode ejectors are arranged bilaterally symmetrically, and a plurality of them are provided at equal intervals according to the depth of the soil.

[0010] Preferably, the outer end of the copper electrode is engraved with sharp teeth.

[0011] Preferably, the outer surface of the copper electrode in contact with the grouting liquid and the surface of the high compression spring are coated with insulating glue.

[0012] Preferably, the circuit signal controls the switch to send instructions to the signal boxes of two of the anchor rods, and controls the click switch to connect the corresponding electrode ejectors to switch the positive and negative poles through the signal processor, and the electrical measurement sensor transmits the electrical measurement signal to the resistance test data processor.

[0013] Preferably, the circuit signal control switch is connected to the combined anchor array via radio signals, and sends instructions to a pair of adjacent or separated anchors in the X and Y directions of the combined anchor array in sequence, and numbers the measured resistances in the X and Y directions respectively.

[0014] The construction method of the soil slope sliding surface detection system according to the above-mentioned combined anchor electrode comprises the following steps:

[0015] (1) Drill and clean the anchor holes on the combined anchor array in a single direction with equal spacing;

[0016] (2) insert the signal box, the electrode ejector and the anchor rod constrained in the ferrule into the anchor hole in sequence, and then pull out the ferrule. The inside of the ferrule is coated with a layer of lubricating oil;

[0017] (3) After the copper electrode built into the electrode ejector is ejected into the soil under the action of the high compression spring, the anchor hole is grouted;

[0018] (4) Insert the stop plug into the tail of the anchor rod and tighten the nut. Then pull out the wire pre-embedded in the outer wall of the main anchor rod to connect to the signal box.

[0019] The method for using the soil slope sliding surface detection system of the combined anchor electrode comprises the following steps:

[0020] (1) Select the detection area, arrange the combined anchor array according to the principle of equal spacing in one direction, and check whether the signal box at the top of each anchor can work normally;

[0021] (2) Arrange the resistance test data processor and circuit signal control switch on the upper part of the selected landslide;

[0022] (3) Activate the circuit signal controller to send instructions to the signal boxes of two of the rock bolts in the X direction respectively. Control the electrode switcher through the signal processor to connect the corresponding electrode ejectors in contact with the soil mass at that depth of the landslide, and perform positive and negative pole switching as needed. Transmit the electrical measurement signals to the resistance test data processor through the electrical measurement sensors;

[0023] (4) Once again, control the electrode switcher through the signal processor to connect the corresponding electrode ejectors in contact with the soil mass at other depths of the landslide, and perform positive and negative pole switching as needed. Transmit the electrical measurement signals to the resistance test data processor through the electrical measurement sensors;

[0024] (5) Repeat steps (3)-(4) to detect the sliding surfaces at other positions in the X direction;

[0025] (6) Repeat steps (3)-(5) to detect the resistance data of the sliding surface in the Y direction;

[0026] (7) Analyze the stability of each sliding surface of the landslide and determine the position of the most dangerous sliding surface based on the characteristic that the greater the degree of sliding of the soil mass sliding surface of the slope, the smaller the resistance.

[0027] Advantages: Compared with the prior art, the present invention has the following advantages:

[0028] 1. The structure designed in this solution can accurately position and prospect the geoelectric characteristics of the sliding ground at different depths of the soil slope, and determine the specific position of the most dangerous sliding surface. At the same time, the arrangement method of the combined rock bolt array can play a role in reinforcing the soil mass during the detection process;

[0029] 2. The signal box, fixed sleeve, and electrode emitter are all made of non-conductive acrylic material, which can avoid the influence of conductive materials on the resistance test results. The umbrella-shaped outer port of the electrode can effectively prevent grout from penetrating into the concave surface where the electrode contacts the soil mass and affecting the test results;

[0030] 3. The symmetrically arranged electrode ejectors on the left and right can be freely arranged according to the soil depth, and the electrode spacing can be adjusted according to the test accuracy, which is beneficial for prospecting the sliding surfaces at different depths;

[0031] 4. The pointed teeth at the outer end of the copper electrode can force the electrode to deeply penetrate into the soil mass under the combined action of the high elastic potential energy released by the high compression spring, ensuring the stability of the overall structure;

[0032] 5. The circuit signal control switcher can alternately send instructions to the signal boxes of any two anchor rods, control the electrode switcher through the signal processor to connect the electrode ejectors in contact with the soil mass at a certain depth of the landslide, and switch the positive and negative poles as needed. The electrical measurement sensor can transmit electrical measurement signals to the resistance test data processor, and infer the position of the main sliding surface based on the change of the resistance data here and the resistance data at different positions and depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of the combined anchor rod array in the present invention;

[0034] Figure 2 is a schematic structural diagram of the anchor rod in the present invention;

[0035] Figure 3 is a schematic structural diagram of the anchor rod under the restraint of the ferrule in the present invention;

[0036] Figure 4 is a schematic structural diagram of the electrode ejector in the present invention;

[0037] Figure 5 is the clothing plane and X, Y azimuth diagram of the combined anchor rod array in the present invention;

[0038] Figure 6 is a flow chart of the sliding surface detection after a pair of electrodes in two anchor rods receive work instructions in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0040] As Figure 1 shown, the soil slope sliding surface detection system of the combined anchor rod electrode includes a combined anchor rod array 1, a resistance test data processor 3, and a circuit signal control switcher 4 arranged on the soil slope.

[0041] On the combined anchor rod array 1, a number of (four in this embodiment) anchor rods 2 are arranged at equal intervals in one direction. The anchor rod 2 includes a main anchor rod body 202, and a signal box 201, a nut 203, a grout stopper 204, a sealing plug 205, an electrode ejector 206, a wire 207, and a fixed sleeve 208 are successively arranged on the main anchor rod body 202 from top to bottom. Among them, the electrode ejectors 206 are arranged symmetrically left and right, and a number of (3 in this embodiment) are arranged at equal intervals according to the soil depth. The fixed sleeve 208 is made of insulating material.

[0042] The signal box 201 is made of acrylic glass material, and it is internally equipped with a signal processor 2011, a solar power supply 2012, an electrical measurement sensor 2013, a power switch 2014, and an electrode switcher 2015. The electrode ejector 206 includes a copper electrode 2061 in the shape of an inwardly concave umbrella. The outer end of the copper electrode 2061 is engraved with sharp teeth. The inner end and the outer end of the copper electrode 2061 are respectively provided with an outer fastening sleeve 2062 and an inner fastening sleeve 2063. The outer fastening sleeve 2062 is connected with a high compression spring 2064, and the high compression spring 2064 is connected with the main bolt body 202. The electrode ejector 206 is embedded in the fixed sleeve 208 at the inner end and is connected with the signal box 201 through a wire 207.

[0043] In addition, an insulating glue is coated on the outer surface of the copper electrode 2061 in contact with the grouting liquid and on the surface of the high compression spring 2064.

[0044] Taking the detection of the sliding surface of a soil slope landslide as an example, the construction method of the soil slope sliding surface detection system of the combined bolt electrode is as follows.

[0045] First, it is necessary to prefabricate a composite bolt 2 as shown in Figure 2 to construct the combined bolt array 1. As shown in Figure 1 and Figure 5 shown, first, it is necessary to lay out the combined bolt array 1 in the selected detection area of the sliding surface of the soil slope landslide, and drill and clean the anchor holes according to the principle of arranging them at equal intervals in a single direction in its layout area. As shown in Figure 3 and Figure 4 shown, an insulating glue is respectively coated on the outer surface of the electrode emitter 206 and the copper electrode 2061 on the prefabricated bolt 2 in contact with the grouting liquid and on the surface of the high compression spring 2064. Subsequently, the bolts 2 with the signal box 201 not installed at the top and the electrode ejector 206 constrained in the ferrule 209 are sequentially inserted into the anchor holes, and the ferrule 209 with lubricating oil coated on its inner wall is pulled out. After the copper electrode 2061 inside the electrode ejector 206 is ejected and inserted into the soil under the action of the high compression spring 2064, the anchor holes are grouted. Finally, a grout stopper 204 is stuffed into the tail of the bolt 2 and the nut 203 is tightened, and the wire 207 pre-embedded in the outer part of the main bolt body 202 is pulled out and connected to the signal box 201.

[0046] The usage method of the soil slope sliding surface detection system of the combined bolt electrode of the present invention is as follows.

[0047] First, check whether the signal box 201 at the top of each bolt 2 can work normally, and select and install a resistance test data processor 3 and a circuit signal control switcher 4 on the upper part of the detected landslide.

[0048] As shown in Figure 6As shown in the figure, taking the detection of a certain sliding surface in the Y direction as an example, the start circuit signal controls the switch 4 to send instructions to the signal boxes 201 of two of the anchor rods 2 in the Y direction respectively. The signal processor 2011 controls the electrode switch 2015 to connect the second ejectors 206 of the second and third electrodes on the left side of the right side of the second anchor rod 2 of the soil slope, and switches them to the positive and negative poles respectively. The electrical measurement sensor 2013 transmits the electrical measurement signal to the resistance test data processor 3 to obtain the change of the resistance data here. At the same time, the signal processor 2011 controls the electrode switch 2015 to connect the corresponding ejectors 206 in contact with the soil at other depths of the soil slope again, and switches the positive and negative poles as needed. The electrical measurement sensor 2013 transmits the electrical measurement signal to the resistance test data processor 3 again to obtain the resistance data of different depths of the soil layer at the same position of the landslide. Then, the ejectors 206 of each depth of the soil layer at other positions in the Y direction are connected to obtain the resistance data, and the resistance data of each depth of the soil layer at each position in the X direction is measured by repeating the electrical measurement steps in the Y direction. According to the characteristic that the more severe the sliding degree of the sliding surface of the slope soil is, the more obvious the abnormal fluctuation of its resistance data is and the overall trend is downward, the stability of each sliding surface of the landslide is analyzed, and the position of the most dangerous sliding surface is inferred.

Claims

1. Detection system for soil slope sliding surface of combined bolt electrode, characterized in that, Comprising a combined anchor rod array arranged on a soil slope, a resistance test data processor, and a circuit signal control switcher. A number of anchor rods are arranged at equal intervals in one direction on the combined anchor rod array; The anchor rod includes a main anchor rod body, on which a signal box, a nut, a grout stopper, a sealing plug, an electrode ejector, a wire, and a fixed sleeve are successively arranged from top to bottom. The signal box is internally provided with a signal processor, a solar power supply, an electrical measurement sensor, a power switch, and an electrode switcher. The electrode ejector includes a copper electrode in the shape of an inwardly concave umbrella. The inner end and the outer end of the copper electrode are respectively provided with an outer fastening sleeve and an inner fastening sleeve. The outer fastening sleeve is connected with a high compression spring, and the high compression spring is connected with the main anchor rod body. The electrode ejector is embedded into the fixed sleeve at the inner end and is connected with the signal box through the wire; The circuit signal control switcher sends an instruction to the signal boxes of two of the anchor rods, and controls the electrode switcher to connect the corresponding electrode ejectors through the signal processor to perform the positive and negative pole switching. The electrical measurement sensor transmits an electrical measurement signal to the resistance test data processor; The electrode ejectors are arranged symmetrically left and right, and a plurality of them are arranged at equal intervals according to the soil depth; The circuit signal control switcher is connected with the combined anchor rod array through a radio signal, and successively sends instructions to a pair of adjacent or separated anchor rods in the X direction and the Y direction of the combined anchor rod array, and numbers the measured resistances in the X direction and the Y direction respectively.

2. The landslide surface detection system of the combined anchor electrode according to claim 1, characterized in that, The number of the anchor rods arranged in one direction on the combined anchor rod array is greater than or equal to four.

3. The landslide surface detection system of the combined anchor electrode according to claim 1, characterized in that The signal box is made of acrylic glass material, and the fixed sleeve is made of insulating material.

4. The landslide surface detection system of the combined anchor electrode according to claim 1, characterized in that, The outer end of the copper electrode is engraved with sharp teeth.

5. The soil slope sliding surface detection system of the combined anchor electrode according to claim 1, characterized in that, An insulating glue is coated on the outer surface of the copper electrode in contact with the grouting liquid and the surface of the high compression spring.

6. A construction method of a landslide surface detection system for a combined anchor electrode according to any one of claims 1-5, characterized in that, Including the following steps: (1) Drill and clean the anchor holes at equal intervals in one direction on the combined anchor rod array; (2) Insert the signal box, the electrode ejector, and the anchor rod constrained in the bushing into the anchor holes in sequence, and then pull out the bushing. A layer of lubricating oil is coated inside the bushing; (3) After the copper electrode built in the electrode ejector is ejected and inserted into the soil under the action of the high compression spring, grout the anchor holes; (4) Plug a grout stopper at the tail of the anchor rod and tighten the nut, and then pull out the wire pre-embedded in the outer wall of the main anchor rod body to connect the signal box.

7. A method for using a landslide surface detection system of a combined bolt electrode according to any one of claims 1-5, characterized in that, Including the following steps: (1) Select a detection area, arrange the combined anchor rod array according to the principle of equal intervals in one direction, and check that the signal boxes at the tops of each anchor rod can work normally; (2) Arrange the resistance test data processor and the circuit signal control switcher well at the upper part of the selected landslide to be detected; (3) Activate the circuit signal control switcher, and make it send instructions to the signal boxes of two of the bolts in the X direction respectively. Control the electrode switcher through the signal processor to connect the electrode ejectors corresponding to the main bolt bodies of the bolts at a certain same height position respectively, and perform positive and negative pole switching as needed. Transmit the electrical measurement signals to the resistance test data processor through the electrical measurement sensors; (4) Again, control the electrode switcher through the signal processor to connect the electrode ejectors corresponding to other same height positions of the main bolt bodies of the bolts, and perform positive and negative pole switching as needed. Transmit the electrical measurement signals to the resistance test data processor through the electrical measurement sensors; (5) Repeat steps (3)-(4) to detect the sliding surfaces at other positions in the X direction; (6) Repeat steps (3)-(5) to detect the resistance data of the sliding surfaces in the Y direction; (7) Analyze the stability of each sliding surface of the landslide and determine the position of the most dangerous sliding surface based on the characteristic that the more severe the sliding degree of the slope soil sliding surface, the smaller the resistance.

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