CN111308545A - Rock-soil body grouting effect detection device and method - Google Patents
Rock-soil body grouting effect detection device and method Download PDFInfo
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- CN111308545A CN111308545A CN202010168259.2A CN202010168259A CN111308545A CN 111308545 A CN111308545 A CN 111308545A CN 202010168259 A CN202010168259 A CN 202010168259A CN 111308545 A CN111308545 A CN 111308545A
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- 238000001514 detection method Methods 0.000 title claims abstract description 106
- 239000002689 soil Substances 0.000 title claims abstract description 40
- 230000000694 effects Effects 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title description 7
- 238000003780 insertion Methods 0.000 claims abstract description 61
- 230000037431 insertion Effects 0.000 claims abstract description 61
- 239000011435 rock Substances 0.000 claims abstract description 9
- 239000011148 porous material Substances 0.000 claims description 30
- 238000010892 electric spark Methods 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 14
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 238000007569 slipcasting Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 5
- 230000005284 excitation Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000746 body region Anatomy 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000013170 computed tomography imaging Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/02—Generating seismic energy
- G01V1/157—Generating seismic energy using spark discharges; using exploding wires
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/20—Arrangements of receiving elements, e.g. geophone pattern
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
- G01V1/30—Analysis
- G01V1/306—Analysis for determining physical properties of the subsurface, e.g. impedance, porosity or attenuation profiles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
- G01V1/34—Displaying seismic recordings or visualisation of seismic data or attributes
- G01V1/345—Visualisation of seismic data or attributes, e.g. in 3D cubes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/60—Analysis
- G01V2210/62—Physical property of subsurface
- G01V2210/624—Reservoir parameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/70—Other details related to processing
- G01V2210/74—Visualisation of seismic data
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention relates to a rock-soil body grouting effect detection device which comprises a detector string, wherein the detector string comprises detectors and an insertion rod, the insertion rod is detachably connected with a plurality of detectors, the detectors are sequentially connected through a first cable, the insertion rod is rotatably connected with a plurality of supporting arms at each detector, torsional springs for outwards rotating the supporting arms are arranged at the rotating connection positions of the supporting arms and the insertion rod, the insertion rod is sleeved and slidably connected with a first sleeve for abutting against the rotating connection positions of the supporting arms and the insertion rod at each detector, the first sleeves are sequentially connected through a connecting rod, one end of the insertion rod is vertically connected with a guide rod, a second sleeve is sleeved and slidably connected on the guide rod, the second sleeve is connected with one end, close to the guide rod, of the connecting rod through a first inclined rod, and two ends of the first inclined rod are respectively rotatably connected with the second sleeve and the connecting rod. The invention has the effect of facilitating the detection of the grouting effect of the rock and soil mass under various ground conditions.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a device and a method for detecting a grouting effect of a rock-soil body.
Background
At present, rock-soil body grouting generally refers to pressing cement slurry with certain pressure into a rock-soil body through a specific grouting channel by using a high-pressure grouting pump, and the rock-soil strength is enhanced by the functions of permeation, filling, compaction, splitting, consolidation and the like of the slurry on the rock-soil body, so that the long-term safe operation of a building (structure) is effectively ensured.
In the prior art, a chinese patent with an authorization publication number of CN208379652U discloses a device for detecting grouting effect of a rock-soil body, which comprises a detector string, wherein the detector string comprises a plurality of detector units, each detector unit comprises a cylindrical shell, a detector is arranged in the shell, the detectors of the plurality of detector units are sequentially connected through a first cable, the shells of the plurality of detector units are sequentially connected through a connecting rope, and the detector units are also provided with a positioning mechanism and a shrinking mechanism, and the detector string can be coupled with the inner wall of a detection pore passage through the positioning mechanism and the shrinking mechanism, so that the position of each detector unit can be limited, interference is reduced, and accuracy and stability of a detection result are improved; after the detection is finished, the detector string can be directly pulled out from the detection hole channel through the connecting rope.
The above prior art solutions have the following drawbacks: because the casings of a plurality of detector units are connected in sequence through the connecting ropes, when the rock-soil mass grouting effect on the slope or the top of the tunnel hole is required to be detected, the detector units connected through the connecting ropes are not convenient to be placed down to the slope or a detection hole drilled in the top of the tunnel hole.
Disclosure of Invention
The invention aims to provide a device for detecting the grouting effect of a rock-soil body, which has the advantage of being convenient for detecting the grouting effect of the rock-soil body under various ground conditions.
The above object of the present invention is achieved by the following technical solutions:
a device for detecting the grouting effect of a rock-soil body comprises a detector string, wherein the detector string comprises a detector and an insertion rod, the inserting rod is detachably connected with a plurality of detectors which are sequentially connected through a first cable, the insertion rod is rotatably connected with a plurality of supporting arms at each detector, the rotary connection part of the supporting arms and the insertion rod is provided with a torsional spring for the outward rotation of the supporting arms, the insertion rod is sleeved at each detector and is connected with a first sleeve used for abutting against the rotary joint of the supporting arm and the insertion rod in a sliding way, a plurality of first sleeves are connected in sequence through connecting rods, one end of the insertion rod is vertically connected with a guide rod, a second sleeve is sleeved and connected on the guide rod in a sliding way, the second sleeve is connected with one end, close to the guide rod, of the connecting rod through a first inclined rod, and two ends of the first inclined rod are respectively connected with the second sleeve and the connecting rod in a rotating mode.
By adopting the technical scheme, when the grouting effect of the rock-soil mass is detected, particularly on the top of a slope or a tunnel, after a detection hole is drilled in an area to be detected, a plurality of detectors are connected to the insertion rod to form a detector string, the detector string is placed in the detection hole, the first sleeve abuts against the rotary joint of the support arm and the insertion rod, the support arm is contracted, the detector string is placed in the detection hole, the detector string slides in the detection hole to the position to be detected, the second sleeve slides upwards along the length direction of the guide rod, the second sleeve drives the connecting rod to push the first sleeve along the length direction of the insertion rod through the first inclined rod, so that the rotary joint of the first sleeve, the support arm and the insertion rod is separated from abutting, the support arm is expanded, the support arm is abutted against the inner wall of the detection hole, and the insertion rod is coaxial with the detection hole, the inserting rod is fixed in the detection hole, so that the detector is not easy to be disturbed and offset during detection; after the detection is accomplished, when needing to take out the wave detector cluster, the length direction second sleeve that slides downwards along the guide bar again, the second sleeve drives the connecting rod through first down tube and promotes first sleeve along the length direction of grafting rod, first sleeve carries out the butt to the rotation junction of support arm and grafting rod, the support arm shrink, thereby be convenient for take out the wave detector cluster, compare in being connected the wave detector and can only putting into subaerial inspection hole under the action of gravity for connecting the rope, through setting up the wave detector on the grafting rod, can put into the inspection hole on slope and tunnel hole top with the wave detector cluster, have the advantage of being convenient for carry out ground body slip casting effect detection to multiple ground condition.
The present invention in a preferred example may be further configured to: the inserted link includes the multistage inserted link, the inserted link both ends are provided with internal thread section and external screw thread section respectively, many inserted link threaded connection, every all be provided with support arm and first sleeve on the inserted link.
Through adopting above-mentioned technical scheme, the threaded connection that the multistage inserted bar passes through internal thread section and external screw thread section forms the inserted bar for detection personnel can be through increasing the inserted bar or reducing the inserted bar according to the degree of depth in inspection hole, so that adjust the length of inserted bar.
The present invention in a preferred example may be further configured to: the first sleeve is provided with two jacks along the axis direction of the first sleeve, and two ends of the connecting rod are respectively provided with a bolt which is in splicing fit with the jacks.
Through adopting above-mentioned technical scheme, be provided with the jack on the first sleeve, the connecting rod passes through the bolt and pegs graft in the jack of two adjacent inserted bars to connect two adjacent inserted bars.
The present invention in a preferred example may be further configured to: the utility model discloses a fixing device for fixing a plug rod, including the guide bar, the plug rod is close to the guide bar's one end is provided with positioning mechanism, positioning mechanism includes third sleeve, horizontal pole and slide bar, the third sleeve cover establish and sliding connection in on the plug rod, two horizontal pole symmetry and set up perpendicularly in the both sides of plug rod, the inside cavity of horizontal pole, the slide bar is worn to establish and sliding connection in the horizontal pole, the horizontal pole is provided with rather than the fluting of inside intercommunication along its length direction, the third sleeve passes through the second down tube the fluting with the slide bar is close to the one end of plug rod links to each other, the second down tube respectively with the third sleeve with the slide bar rotates to be connected, wear to establish and threaded connection have be used for with on the third sleeve first fastening screw rod of plug rod looks butt.
Through adopting above-mentioned technical scheme, after transferring the wave detector cluster to the position that the inspection hole needs to detect, along the length direction slip third sleeve of peg graft, the third sleeve drives the slide bar through the second down tube and outwards slides along the length direction of crossbeam, make slide bar and inspection hole entrance to a cave position carry out the butt, thereby the extension bar is fixed, when avoiding sliding the second sleeve on the guide bar, cause the peg graft removal, thereby make the wave detector skew the position that the inspection hole needs to detect.
The present invention in a preferred example may be further configured to: and a second fastening screw rod used for being abutted against the guide rod is arranged on the second sleeve in a penetrating manner and is in threaded connection.
Through adopting above-mentioned technical scheme, slide along the length direction of guide bar when the second sleeve to make first sleeve rotate the junction to the support arm and peg graft pole under the drive of connecting rod and carry out the butt, for avoiding the bracing piece to promote first sleeve under the effect of torsional spring, fix the position of second sleeve on the guide bar through second fastening screw, thereby avoid the bracing piece to promote first telescopic emergence under the effect of torsional spring.
The present invention in a preferred example may be further configured to: and butterfly nuts are arranged on the first fastening screw and the second fastening screw.
By adopting the technical scheme, the butterfly nuts are respectively arranged on the first fastening screw and the second fastening screw, so that the first fastening screw and the second fastening screw can be conveniently screwed through the butterfly nuts respectively.
The present invention in a preferred example may be further configured to: the second sleeve is provided with a handle.
Through adopting above-mentioned technical scheme, through being provided with the handle, be convenient for slide the length direction of second sleeve along the guide bar through the handle.
The invention also aims to provide a method for detecting the grouting effect of the rock-soil mass, which has the advantage of facilitating the detection of the grouting effect of the rock-soil mass on various ground conditions.
The second purpose of the invention is realized by the following technical scheme:
a method for detecting grouting effect of rock and soil mass comprises the following steps:
step one, arranging detection pore channels in a rock-soil body grouting area, wherein a plurality of groups of detection pore channels are arranged in the prediction diffusion area, each group of detection pore channels is three, a triangular layout is formed by taking the grouting area as the center, the distances from the groups of detection pore channels to the center of the grouting area are sequentially increased, and the detection pore channels take PVC pipelines as retaining walls;
placing the electric spark seismic source in any detection pore channel, connecting a plurality of inserted rods in a threaded manner according to the length of the detection pore channel to form inserted rods to adapt to the length of the detection pore channel, arranging detectors on each inserted rod to form a detector string, sequentially connecting first sleeves through a plurality of connecting rods, placing the detector string in any other detection pore channel and sliding to the detection position of a detection pipeline, and coupling the detectors with the inner wall of the detection pore channel one by one through a supporting arm;
thirdly, positioning the detector string at the opening of the detection hole channel through a positioning mechanism, and connecting the electric spark seismic source and the detector string with a detection and analysis system through a second cable;
step four, exciting elastic waves through an electric spark seismic source before and after grouting respectively, transmitting signals acquired by the detector string to a detection analysis system, and forming a two-dimensional CT image through an inversion algorithm by the detection analysis system;
and fifthly, judging the grouting area and the grouting effect by comparing the two-dimensional CT images of the rock and soil mass before and after grouting, thereby completing detection of the grouting effect of the rock and soil mass.
Through adopting above-mentioned technical scheme, on ground, the detection pore is laid in the geotechnical body region that slope or tunnel roof need detect, length according to detection pore is with many inserted bar threaded connection formation inserted bar with the adaptation length that detects the pore, and set up the radiodetector in order to form the radiodetector cluster on every inserted bar, the rethread a plurality of connecting rods link to each other first sleeve in proper order, then place the radiodetector cluster in other arbitrary detection pore and slide to the detection position that detects the pipeline, and fix the inserted bar in entrance to a cave department through positioning mechanism, the rethread support arm is with the radiodetector and the inner wall one-to-one coupling that detects the pore, have the advantage that is convenient for carry out geotechnical body slip casting effect to multiple ground condition.
In summary, the invention includes at least one of the following beneficial technical effects:
1. when the grouting effect of the rock-soil mass is detected, particularly on the top of a slope or a tunnel, after a detection hole is drilled in an area to be detected, a plurality of detectors are connected to an insertion rod to form a detector string, the detector string is placed in front of the detection hole, the first sleeve abuts against the rotary joint of the support arm and the insertion rod, the support arm is contracted, the detector string is placed in the detection hole, the detector string slides in the detection hole to the position to be detected, the second sleeve slides upwards along the length direction of the guide rod, the second sleeve drives the connecting rod to push the first sleeve along the length direction of the insertion rod through the first inclined rod, so that the first sleeve is separated from the abutting joint with the rotary joint of the support arm and the insertion rod, the support arm is opened, the support arm is abutted against the inner wall of the detection hole, and the insertion rod is coaxial with the detection hole, the inserting rod is fixed in the detection hole, so that the detector is not easy to be disturbed and shifted during detection, compared with the method that the detector is connected with a connecting rope and can only be placed in the detection hole under the ground under the action of gravity, the detector can be serially placed in the detection holes on the top of a slope and a tunnel hole by arranging the detector on the inserting rod, and the method has the advantage of facilitating rock and soil body grouting effect detection on various ground conditions;
2. the multi-section inserted bars are connected through the threads of the internal thread section and the external thread section to form the inserted bars, so that a detector can conveniently adjust the length of the inserted bars by increasing or decreasing the inserted bars according to the depth of the detection hole;
3. after the detector string is placed to the position that the inspection hole needs to detect, the third sleeve slides along the length direction of the inserting rod, the third sleeve drives the slide bar to outwards slide along the length direction of the cross bar through the second inclined rod, so that the slide bar is abutted against the position of the opening of the inspection hole, the inserting rod is fixed, the movement of the inserting rod is avoided when the second sleeve slides on the guide rod, and the detector deviates from the position that the inspection hole needs to detect.
Drawings
FIG. 1 is a schematic structural diagram of a rock-soil mass grouting effect detection device according to an embodiment of the invention;
FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;
FIG. 3 is an enlarged partial schematic view of portion B of FIG. 1;
fig. 4 is an exploded view of a bayonet rod in accordance with an embodiment of the present invention.
In the figure, 1, a detector string; 101. a detector; 102. a plug rod; 1021. inserting a rod; 2. a first cable; 3. a support arm; 4. a torsion spring; 5. a first sleeve; 6. a connecting rod; 7. a guide bar; 8. a second sleeve; 9. a first diagonal member; 10. a jack; 11. a bolt; 12. a positioning mechanism; 1201. a third sleeve; 1202. a cross bar; 1203. a slide bar; 13. grooving; 14. a second diagonal member; 15. a first fastening screw; 16. a second fastening screw; 17. a butterfly nut; 18. and (4) a handle.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
With reference to fig. 1 and 4, the rock-soil grouting effect detection device disclosed by the invention comprises a geophone string 1, wherein the geophone string 1 comprises a geophone 101 and an insertion rod 102. The insertion rod 102 comprises a plurality of sections of insertion rods 1021, wherein an internal thread section and an external thread section are respectively arranged at two ends of each insertion rod 1021, and the plurality of insertion rods 1021 are in threaded connection. Two adjacent inserted bars 1021 link to each other through connecting rod 6, and every inserted bar 1021 all overlaps and establishes and sliding connection has first sleeve 5, and first sleeve 5 is provided with two jacks 10 along its axis direction, the both ends of connecting rod 6 be provided with respectively with jack 10 complex bolt 11 of pegging graft mutually. Each inserted link 1021 is adhered with a detector 101, and the detectors 101 on each inserted link 1021 are sequentially connected through a first cable 2. The inserted link 102 one end is connected with guide bar 7 perpendicularly, and the cover is established and sliding connection has second sleeve 8 on the guide bar 7, and second sleeve 8 links to each other through the one end that first down tube 9 is close to guide bar 7 with connecting rod 6, and the both ends of first down tube 9 rotate with second sleeve 8 and connecting rod 6 respectively and are connected. A second fastening screw 16 used for abutting against the guide rod 7 is connected to the second sleeve 8 in a penetrating and threaded mode, a butterfly nut 17 is welded at one end of the second fastening screw 16, and a handle 18 convenient for sliding the second sleeve 8 is further welded on the second sleeve.
Referring to fig. 1 and 2, the insertion rod 1021 is hinged to two symmetrical support arms 3 at each detector 101, a torsion spring 4 for outward rotation of the support arm 3 is disposed at the hinge joint of the support arm 3 and the insertion rod 102, and the first sleeve 5 is used for abutting against the hinge joint of the support arm 3 and the insertion rod 102 so that the support arm 3 contracts when the insertion rod 102 is inserted into the detection hole.
With reference to fig. 1 and 3, one end of the plugging rod 102 close to the guide rod 7 is provided with a positioning mechanism 12, and the positioning mechanism 12 includes a third sleeve 1201, a cross rod 1202 and a sliding rod 1203. The third sleeve 1201 is sleeved and slidably connected to the insertion rod 102, the two cross rods 1202 are symmetrically and vertically arranged on two sides of the insertion rod 102, the cross rods 1202 are hollow, the sliding rod 1203 penetrates through and is slidably connected to the cross rods 1202, and a tip is arranged at one end, far away from the insertion rod 1021, of the sliding rod 1203. The crossbar 1202 is provided with a slot 13 along its length communicating with its interior, the slot 13 not opening outwardly along the length of the crossbar 1202. The third sleeve 1201 is connected with one end, close to the insertion rod 102, of the sliding rod 1203 through the second inclined rod 14 penetrating through the slot 13, the second inclined rod 14 is respectively connected with the third sleeve 1201 and the sliding rod 1203 in a hinged mode, the third sleeve 1201 penetrates through the first fastening screw 15 and is in threaded connection with the first fastening screw 15, the first fastening screw 15 is used for being abutted to the insertion rod 102, and the butterfly nut 17 is welded at one end of the first fastening screw 15.
The embodiment also discloses a rock-soil grouting effect detection method, which comprises the following steps:
step one, laying detection channels in a grouting area of a rock-soil body, wherein a plurality of groups of detection channels are laid in the range of a predicted diffusion area, each group of detection channels is three, a triangular layout is formed by taking the grouting area as a center, the distance between each detection channel and the grouting area can be gradually increased, such as 1.5m, 2.0m, 3.0m and the like, preferably, the depth of each hole exceeds the height of a pile by about 1.0m, certain verticality is ensured, a PVC sleeve is additionally arranged to prevent the detection channels from collapsing and storing water, and the inside of a drill hole is cleaned at the same time, so that the detector string 1 and an electric spark seismic source can be lowered to the required depth, a precondition is provided for detection, wherein cost is saved and detection efficiency is improved;
placing the electric spark seismic source in any detection channel, ensuring that the electric spark seismic source can freely move up and down in the detection channel, and placing the detector string 1 in any other detection channel, wherein the vertical distance between the detector 101 units meets the design requirement; then, a plurality of insertion rods 1021 are connected in a threaded manner to form insertion rods 102 according to the length of the detection pore channel to adapt to the length of the detection pore channel, a detector 101 is bonded on each insertion rod 1021 to form a detector string 1, a plurality of connecting rods 6 are used for connecting first sleeves 5 in sequence through the matching of bolts 11 and insertion holes 10, then the detector string 1 is placed in any other detection pore channel and slides to the detection position of the detection pipeline, then a third sleeve 1201 slides along the length direction of the insertion rods 102, the third sleeve 1201 drives a sliding rod 1203 to slide outwards along the length direction of a cross rod 1202 through a second diagonal rod 14, so that the sliding rod 1203 is abutted against the position of the detection pore opening, the insertion rods 102 are fixed, the second sleeve 8 slides upwards along the length direction of a guide rod 7 through a pull handle 18, the second sleeve 8 drives the connecting rods 6 to push the first sleeves 5 along the length direction of the guide rods 102 through the first diagonal rods 9, so that the first sleeve 5 is separated from the rotary connection part of the support arm 3 and the insertion rod 102, the support arm 3 is opened, the support arm 3 is abutted against the inner wall of the detection hole, the insertion rod 102 is coaxial with the detection hole, and the insertion rod 102 is fixed in the detection hole, so that the detectors 101 are coupled with the inner wall of the detection hole channel one by one;
step three, connecting an electric spark seismic source and a detector string 1 with a detection and analysis system, wherein the detection and analysis system comprises a high-precision wave velocity acquisition instrument and a computer, the detector string 1 is in signal connection with the high-precision wave velocity acquisition instrument through a second cable, the electric spark seismic source is also in signal connection with the high-precision wave velocity acquisition instrument through a third cable, the high-precision wave velocity acquisition instrument is in signal connection with the computer through a fourth cable, the electric spark seismic source is also connected with an excitation control system, a trigger switch is arranged in the excitation control system, the trigger switch signals are connected with the high-precision wave velocity acquisition instrument through the second cable, the electric signal of the trigger switch is transmitted to the high-precision wave velocity acquisition instrument while the excitation control system controls the electric spark seismic source to vibrate, the high-precision wave velocity acquisition instrument picks up and records the sound wave signals acquired by the detector string 1 through, then the high-precision wave speed acquisition instrument transmits the recorded sound wave signals to a computer through a fourth cable;
respectively exciting elastic waves by an electric spark seismic source before and after grouting, transmitting signals acquired by the detector string 1 to a high-precision wave velocity acquisition instrument, transmitting the signals to a computer by the high-precision wave velocity acquisition instrument, and forming a two-dimensional CT image by the computer through an inversion algorithm;
and step five, finding out a color abnormal area through CT imaging comparison of rock and soil mass around the pile foundation before and after grouting, and judging the color change area as a grouting area when the color change of the area and the rock and soil mass around the area before and after grouting is obvious and has an obvious limit, thereby judging the grouting area and the grouting effect.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The utility model provides a ground body slip casting effect detection device, includes wave detector cluster (1), its characterized in that: the detector string (1) comprises detectors (101) and an insertion rod (102), the insertion rod (102) is detachably connected with a plurality of detectors (101), the detectors (101) are sequentially connected through a first cable (2), the insertion rod (102) is rotatably connected with a plurality of supporting arms (3) at each detector (101), a torsional spring (4) for enabling the supporting arms (3) to rotate outwards is arranged at the rotating connection position of the supporting arms (3) and the insertion rod (102), the insertion rod (102) is sleeved and slidably connected with first sleeves (5) for abutting against the rotating connection position of the supporting arms (3) and the insertion rod (102), the first sleeves (5) are sequentially connected through connecting rods (6), one end of the insertion rod (102) is vertically connected with a guide rod (7), and the guide rod (7) is sleeved and slidably connected with a second sleeve (8), the second sleeve (8) is connected with one end, close to the guide rod (7), of the connecting rod (6) through a first inclined rod (9), and two ends of the first inclined rod (9) are respectively connected with the second sleeve (8) and the connecting rod (6) in a rotating mode.
2. The rock-soil mass grouting effect detection device according to claim 1, characterized in that: the inserting rod (102) comprises a plurality of sections of inserting rods (1021), wherein an internal thread section and an external thread section are respectively arranged at two ends of each inserting rod (1021), the inserting rods (1021) are in threaded connection, and each inserting rod (1021) is provided with a supporting arm (3) and a first sleeve (5).
3. The rock-soil mass grouting effect detection device according to claim 2, characterized in that: the first sleeve (5) is provided with two jacks (10) along the axis direction, and the two ends of the connecting rod (6) are respectively provided with a bolt (11) which is in plug-in fit with the jacks (10).
4. The rock-soil mass grouting effect detection device according to claim 1, characterized in that: a positioning mechanism (12) is arranged at one end, close to the guide rod (7), of the insertion rod (102), the positioning mechanism (12) comprises a third sleeve (1201), a cross rod (1202) and a sliding rod (1203), the third sleeve (1201) is sleeved and slidably connected to the insertion rod (102), the two cross rods (1202) are symmetrically and vertically arranged at two sides of the insertion rod (102), the cross rod (1202) is hollow, the sliding rod (1203) penetrates through and is slidably connected into the cross rod (1202), a slot (13) communicated with the interior of the cross rod (1202) is formed in the length direction of the cross rod (1202), the third sleeve (1201) penetrates through the slot (13) through a second inclined rod (14) to be connected with one end, close to the insertion rod (102), of the sliding rod (1203), of the second inclined rod (14) is respectively connected with the third sleeve (1201) and the sliding rod (1203) in a rotating mode, the third sleeve (1201) is provided with a first fastening screw (15) which is used for being abutted against the insertion rod (102) in a penetrating manner and in threaded connection.
5. The rock-soil mass grouting effect detection device according to claim 4, characterized in that: the second sleeve (8) is provided with a second fastening screw (16) which is used for being abutted against the guide rod (7) in a penetrating and threaded connection mode.
6. The rock-soil mass grouting effect detection device according to claim 5, characterized in that: and butterfly nuts (17) are arranged on the first fastening screw (15) and the second fastening screw (16).
7. The rock-soil mass grouting effect detection device according to claim 1, characterized in that: a handle (18) is arranged on the second sleeve (8).
8. A rock-soil mass grouting effect detection method, which adopts the rock-soil mass grouting effect detection device according to any one of claims 1 to 7, and is characterized by comprising the following steps:
step one, arranging detection pore channels in a rock-soil body grouting area, wherein a plurality of groups of detection pore channels are arranged in the prediction diffusion area, each group of detection pore channels is three, a triangular layout is formed by taking the grouting area as the center, the distances from the groups of detection pore channels to the center of the grouting area are sequentially increased, and the detection pore channels take PVC pipelines as retaining walls;
placing the electric spark seismic source in any detection pore channel, connecting a plurality of insertion rods (1021) in a threaded manner according to the length of the detection pore channel to form insertion rods (102) to be matched with the length of the detection pore channel, arranging detectors (101) on each insertion rod (1021) to form a detector string (1), sequentially connecting first sleeves (5) through a plurality of connecting rods (6), then placing the detector string (1) in any other detection pore channel and sliding to the detection position of a detection pipeline, and coupling the detectors (101) with the inner wall of the detection pore channel one by one through supporting arms (3);
thirdly, positioning the detector string (1) at the position of the detection hole through a positioning mechanism (12), and connecting the electric spark seismic source and the detector string (1) with a detection analysis system through a second cable;
step four, exciting elastic waves through an electric spark seismic source before and after grouting respectively, transmitting signals acquired by the detector string (1) to a detection analysis system, and forming a two-dimensional CT image through an inversion algorithm by the detection analysis system;
and fifthly, judging the grouting area and the grouting effect by comparing the two-dimensional CT images of the rock and soil mass before and after grouting, thereby completing detection of the grouting effect of the rock and soil mass.
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