CN110673221A - Transient electromagnetic coil carrying mechanism for tunnel and using method - Google Patents
Transient electromagnetic coil carrying mechanism for tunnel and using method Download PDFInfo
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- CN110673221A CN110673221A CN201910882133.9A CN201910882133A CN110673221A CN 110673221 A CN110673221 A CN 110673221A CN 201910882133 A CN201910882133 A CN 201910882133A CN 110673221 A CN110673221 A CN 110673221A
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- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
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Abstract
The invention discloses a transient electromagnetic coil carrying mechanism for a tunnel and a using method thereof, wherein the transient electromagnetic coil carrying mechanism comprises a wire frame, a plurality of binding ropes for fixing coils are arranged at the side part of the wire frame, a wire rod clamping cylinder is arranged at the center of the wire frame and is connected with the wire frame through a connecting rod piece, and a plurality of fastening connecting pieces are arranged at the periphery of the wire rod clamping cylinder to fix a wire rod; the wire frame is also connected with a telescopic device, and the plane of the telescopic device is vertical to the plane of the wire frame. The transient electromagnetic coil carrying mechanism has the characteristics of simplicity in operation, convenience, practicability, simplicity in material, high precision, convenience in winding of a coil and a wire frame and the like.
Description
Technical Field
The disclosure belongs to the technical field of tunnel transient electromagnetic detection, and particularly relates to a transient electromagnetic coil carrying mechanism for a tunnel and a using method.
Background
The transient electromagnetic method is a method for detecting the resistivity of a medium by using a primary pulse magnetic field emitted to the underground by an ungrounded return line or a grounded line source and observing a secondary induction eddy current field caused in the underground medium by using a coil during the interval of the primary pulse magnetic field, so as to find out water-bearing geology such as karst caves and channels, coal mine goafs, deep irregular water bodies and the like. The fixing of the transmitting coil and the changing of the placing angle of the wire frame are always the difficulties which restrict the detection efficiency.
The design variety of present transient coil and support is various, utilizes different materials to form circular or square outline generally, then fixes the coil that artifical circle becomes on the frame, and this kind of support generally needs a large amount of manpowers to carry out the binding of frame and the winding of coil fixed, and does not have the device of fixed receiving probe, wastes time and energy, influences the efficiency of construction. In the transient electromagnetic detection of the tunnel, a certain angle and distance between the coil and the tunnel face are required, and in actual operation, operators often put the coils by subjective analysis, so that the detection accuracy is affected, and the later data processing is affected.
Disclosure of Invention
The present disclosure aims to overcome the above-mentioned deficiencies of the prior art, and provides a transient electromagnetic coil carrying mechanism for tunnel and a using method thereof; the transient electromagnetic coil carrying mechanism has the characteristics of simplicity in operation, convenience, practicability, simplicity in material, high precision, convenience in winding of a coil and a wire frame and the like.
The first invention purpose of this disclosure is to propose a transient electromagnetic coil carrying mechanism for tunnel, in order to achieve the above purpose, this disclosure adopts the following technical solutions:
a transient electromagnetic coil carrying mechanism for a tunnel comprises a wire frame, wherein a plurality of binding ropes for fixing a coil are arranged on the side portion of the wire frame, a wire rod clamping barrel is arranged at the center of the wire frame and connected with the wire frame through a connecting rod piece, and a plurality of fastening connecting pieces are arranged on the periphery of the wire rod clamping barrel to fix a wire rod; the wire frame is also connected with a telescopic device, and the plane of the telescopic device is vertical to the plane of the wire frame.
As a further technical scheme, the telescopic device comprises a multi-stage telescopic rod, one end of the multi-stage telescopic rod is fixed on the wire frame, and the other end of the multi-stage telescopic rod is suspended.
As a further technical scheme, the telescopic rods are arc-shaped rods, and the multi-stage telescopic rods are arranged in equal length.
As a further technical scheme, the arc-shaped rod has a set radian, and the radian of the multi-stage telescopic rod is pi/2 when the multi-stage telescopic rod extends to the longest state.
As a further technical scheme, multistage telescopic link includes first order arc pole, and the second level arc pole overlaps inside first order arc pole, and the third level arc pole overlaps inside the second level arc pole, and the junction of first order arc pole and second level arc pole sets up draw-in groove and arch, and the junction of second level arc pole and third level arc pole sets up draw-in groove and arch.
As a further technical scheme, the end part of the first-stage arc-shaped rod is fixedly connected with a wire frame, and the tangent of the end part of the first-stage arc-shaped rod is perpendicular to the wire frame; the end part of the third-stage arc rod is fixedly provided with a block foundation.
As a further preferable technical solution, the first-stage arc-shaped rod is connected to the middle of the wire frame.
As a further technical scheme, the wire frame is connected into a frame type structure by a plurality of wire frame rod pieces, and adjacent wire frame rod pieces are fixedly connected through rod piece connecting pieces.
As a further technical scheme, the binding rope is fixed on the wire frame rod piece.
As a further technical scheme, the bar clamping barrel is a cylindrical hollow barrel, and the fastening connecting piece is arranged on the barrel wall of the cylindrical hollow barrel in a penetrating mode; the axial direction of the cylindrical hollow cylinder is vertical to the plane of the wire frame.
As a further technical scheme, the wire frame, the wire rod clamping barrel, the connecting rod piece, the fastening connecting piece and the telescopic device are all made of non-metal materials.
A second inventive object of the present disclosure proposes a method of using a transient solenoid carrying mechanism for a tunnel, comprising the steps of:
assembling the carrying mechanism, and winding and fixing the transmitting coil on the wire frame through the binding rope;
fixing a receiving bar in a bar clamping barrel through a fastening connecting piece;
adjusting the carrying mechanism according to the line measuring direction to enable the point on the plane of the transmitting coil to be equidistant to the tunnel face;
the direction of the wire frame is adjusted by using a telescopic device so as to be arranged along the direction of a set angle;
and connecting the transient electromagnetic instrument with the transmitting coil and the receiving bar, and acquiring secondary magnetic field data.
The use method further comprises the following steps:
and after data acquisition is completed, taking down the transmitting coil and the receiving coil bar, detaching the telescopic device and the wire frame, and arranging for next use.
The problem of traditional line frame carry inconvenience, packaging efficiency low, can not guarantee line frame and face distance and angle is solved in this disclosure, has following beneficial effect:
1. this disclosed carrying mechanism sets up the binding rope at the wire frame side, when using with transmitting coil via binding rope be fixed in the wire frame can, whole device easy operation need not consume a large amount of manpowers and assemble the frame, the winding coil, easily equipment operation.
2. The carrying mechanism is provided with the wire bar clamping barrel, the wire bar clamping barrel is fixed with the wire frame, the wire bar can be effectively guaranteed to be perpendicular to the coil, manpower consumption is not needed, and data accuracy is guaranteed.
3. The carrying mechanism disclosed by the invention can effectively form a certain included angle between the coil and the palm surface through the telescopic device, and the angle is formed without depending on subjective assumption of operators, so that the accuracy is improved.
4. According to the carrying mechanism, the winding bar clamping barrel is connected with the wire frame, so that the stability of the quadrilateral wire frame is improved, and the winding bar clamping barrel is not easy to deform.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic overall configuration diagram of a coil mounting mechanism disclosed in one embodiment;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a side view of FIG. 1;
FIG. 5 is a schematic view showing an operating state of a coil mounting mechanism disclosed in one embodiment;
in the figure, 1 wire frame rod piece, 2 rod piece connecting pieces, 3 binding ropes, 4 connecting rod pieces, 5 bar clamping cylinders, 6 locking bolts, 7 telescopic rods, 8 clamping grooves, 9 block foundations, 10 transmitting coils and 11 receiving bars.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc., indicate orientations or positional relationships based on those shown in the drawings, are relational terms determined for convenience of describing structural relationships of the respective parts or elements of the present invention, do not limit the structure, are only used for convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present disclosure.
In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
As described in the background art, the inventor finds that the conventional transient coil support generally requires a large amount of manpower to bind the frame and wind and fix the coil, and a device for fixing the receiving probe is not provided, so that time and labor are wasted, and the construction efficiency is affected; and in tunnel transient electromagnetic detection, operating personnel often rely on subjective analysis to put the coil, influence the accuracy of surveying, cause the influence to later stage data processing, in order to solve above technical problem, this application has proposed a transient solenoid carries on mechanism and application method for tunnel.
The transient electromagnetic coil carrying mechanism comprises a wire frame, wherein a plurality of binding ropes for fixing coils are arranged on the side part of the wire frame, a wire rod clamping barrel is arranged at the center of the wire frame and is connected with the wire frame through a connecting rod piece, and a plurality of fastening connecting pieces are arranged on the periphery of the wire rod clamping barrel to fix the wire rod; the wire frame is also connected with a telescopic device, and the plane of the telescopic device is vertical to the plane of the wire frame.
Example 1
The coil mounting mechanism disclosed in the present embodiment will be further described with reference to fig. 1 to 5;
referring to fig. 1-4, the transient electromagnetic coil carrying mechanism for railway tunnel comprises a wire frame, a receiving bar fixing device and a telescopic device.
The wire frame is a frame type structure formed by fixedly connecting wire frame rod pieces 1 through rod piece connecting pieces 2. The wire frame comprises four wire frame members 1, and wire frame members 1 set linear type members, convenient to detach and carry, and 1 tip of every wire frame member sets up the round hole, and accessible member connecting piece 2 connects into overall frame structure. Binding ropes 3 are arranged at two ends and the middle position of the wire frame rod piece 1 to bind and fix the transmitting coil and the wire frame into a whole. The wire frame rod piece 1 is made of high-strength non-metal materials, so that the influence of metal materials on detection results can be avoided, and meanwhile, the interference of excessive wire frame deformation on the detection results is reduced.
The rod connecting piece 2 is made into a small cylinder by adopting a non-metallic material, and two ends of the small cylinder can be fixed to play a role in anchoring.
The bar receiving fixing device comprises four connecting rod pieces 4, a bar clamping barrel 5 and four locking bolts 6. As shown in fig. 2, the receiving bar fixing device is connected with the wire frame into an integral frame through four connecting rod pieces 4, one end of each connecting rod piece 4 is fixedly connected with a corner of the wire frame, the other end of each connecting rod piece 4 is fixedly connected with the end part of the wire frame rod piece 1 of the wire frame through a rod piece connecting piece 2, and the other end of each connecting rod piece 4 is connected with a bar clamping barrel 5. A bar clamping barrel 5 is provided at the centre of the wire frame.
As shown in fig. 1, the bar clamping cylinder 5 is a cylindrical hollow cylinder, a locking bolt 6 (namely, a fastening connecting piece) is arranged on the surface of the cylindrical hollow cylinder wall at intervals of 90 degrees, the locking bolt 6 penetrates through the cylindrical hollow cylinder wall, the axial direction of the cylindrical hollow cylinder is perpendicular to the wire frame plane, and when a receiving bar is inserted, the locking bolt 6 can be screwed or loosened to ensure that the position of the bar is fixed at the center of the coil and perpendicular to the center of the coil. The connecting rod 4, the bar holding barrel 5 and the locking bolt 6 are all made of non-metallic materials. The receiving bar is fixed in the cylindrical hollow cylinder, so that the error caused by the handheld receiving bar in detection is avoided.
The telescoping device comprises isometric circular-arc telescopic link 7 of three-section, is first order arc pole, second level arc pole, third level arc pole respectively, and second level arc pole overlaps inside first order arc pole, and third level arc pole overlaps inside second level arc pole, and 7 member junctions of adjacent telescopic link are equipped with draw-in groove 8 and the arch is fixed, can carry out the control of angle, have avoided the scene to rely on subjective judgement to survey the influence that causes. The telescopic link passes through draw-in groove and arch to be fixed, for adopting current mature technology, no longer gives unnecessary details here. In this embodiment, the angle corresponding to each stage of the telescopic rod is 30 degrees, and the angle corresponding to the three telescopic rods 7 is 90 degrees when the telescopic rod is extended to the longest state, i.e. the corresponding radian is pi/2. The plane of the telescopic rod is vertical to the plane of the wire frame.
As shown in fig. 1, the telescopic rod 7 is connected to the wire frame by a connecting member. The joint of the adjacent telescopic rods is provided with a clamping groove 8 and a bulge for fixing the telescopic rod bracket. First order arc rod tip and wireframe middle part fixed connection, and first order arc rod tip tangent line and wireframe are mutually perpendicular, third level arc rod suspension, and the bottom sets up cubic basis 9, can improve the stability of whole device. The telescopic rod and the block-shaped foundation are both made of non-metal materials.
As shown in fig. 4, the slot 8 with a hollow circular hole is arranged at the bottom of the upper two sections of telescopic rods, and the protrusion is arranged at the upper part of the lower two sections of telescopic rods, which can be engaged. The protrusion can be pressed by fingers, the telescopic rod can be arranged to form an included angle of 30 degrees, 60 degrees and 90 degrees with the palm surface after being stretched, and errors caused by subjective placing of operators can be avoided.
As shown in fig. 5, the present embodiment also discloses a method for using a transient electromagnetic coil mounting mechanism for a tunnel, which includes the following steps:
splicing the wire frame rod pieces 1 into a bottom framework through rod piece connecting pieces 2 to form a wire frame;
the transmitting coil 10 is wound to a wire frame by a binding rope 3;
connecting a connecting rod piece 4 of the receiving bar fixing device with the wire frame through a rod piece connecting piece 2;
fixing a receiving bar 11 in a bar clamping barrel 5 through a locking bolt 6;
adjusting the wire frame according to the wire measuring direction to ensure that the points on the coil plane are equidistant to the tunnel face;
the telescopic rod of the telescopic device is extended to a required angle (such as 30 degrees, 60 degrees or 90 degrees) by pressing the protrusion, and the direction of the wire frame is adjusted to be in accordance with the specified angle direction;
and connecting the transient electromagnetic instrument with the transmitting coil and the receiving bar, and acquiring secondary magnetic field data.
And after data acquisition is completed, taking down the transmitting coil 10 and the receiving coil bar 11, detaching the telescopic device and the wire frame, and arranging for next use.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A transient electromagnetic coil carrying mechanism for a tunnel is characterized by comprising a wire frame, wherein a plurality of binding ropes for fixing coils are arranged on the side part of the wire frame, a wire rod clamping cylinder is arranged at the center of the wire frame and connected with the wire frame through a connecting rod piece, and a plurality of fastening connecting pieces are arranged on the periphery of the wire rod clamping cylinder to fix a wire rod; the wire frame is also connected with a telescopic device, and the plane of the telescopic device is vertical to the plane of the wire frame.
2. The transient solenoid carrying mechanism of claim 1, wherein said telescoping device comprises a multi-stage telescoping rod having one end fixed to the wire frame and the other end suspended.
3. The transient solenoid carrying mechanism of claim 2, wherein said telescoping rods are arcuate rods, and wherein the multiple telescoping rods are of equal length.
4. The transient solenoid carrying mechanism of claim 3, wherein said arc-shaped rod has a set arc, and wherein said multi-stage telescopic rod has an arc of pi/2 when extended to a longest state.
5. The transient solenoid carrying mechanism as claimed in claim 3, wherein said multi-stage telescopic rod comprises a first stage arc rod, a second stage arc rod is sleeved inside said first stage arc rod, a third stage arc rod is sleeved inside said second stage arc rod, a slot and a protrusion are provided at the junction of said first stage arc rod and said second stage arc rod, and a slot and a protrusion are provided at the junction of said second stage arc rod and said third stage arc rod.
6. The transient solenoid carrying mechanism of claim 5, wherein said first stage arc bar end is fixedly attached to said frame and wherein a tangent to said first stage arc bar end is perpendicular to said frame; the end part of the third-stage arc-shaped rod is fixedly provided with a block foundation; the first-stage arc-shaped rod is connected to the middle of the wire frame.
7. The transient solenoid carrying mechanism of claim 1, wherein said wireframe is connected in a frame-like configuration by a plurality of wireframe members, adjacent wireframe members being fixedly connected by member connectors; the binding rope is fixed on the wire frame rod piece.
8. The transient solenoid carrying mechanism of claim 1, wherein said bar holding barrel is a cylindrical hollow barrel and said fastening connector is inserted through the wall of said cylindrical hollow barrel; the axial direction of the cylindrical hollow cylinder is vertical to the plane of the wire frame; the wire frame, the wire rod clamping barrel, the connecting rod piece, the fastening connecting piece and the telescopic device are all made of non-metal materials.
9. The method of using a transient solenoid coil carrying mechanism as claimed in any of claims 1 to 8, comprising the steps of:
assembling the carrying mechanism, and winding and fixing the transmitting coil on the wire frame through the binding rope;
fixing a receiving bar in a bar clamping barrel through a fastening connecting piece;
adjusting the carrying mechanism according to the line measuring direction to enable the point on the plane of the transmitting coil to be equidistant to the tunnel face;
the direction of the wire frame is adjusted by using a telescopic device so as to be arranged along the direction of a set angle;
and connecting the transient electromagnetic instrument with the transmitting coil and the receiving bar, and acquiring secondary magnetic field data.
10. The method of use of claim 9, further comprising the steps of:
and after data acquisition is completed, taking down the transmitting coil and the receiving coil bar, detaching the telescopic device and the wire frame, and arranging for next use.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910882133.9A CN110673221B (en) | 2019-09-18 | 2019-09-18 | Transient electromagnetic coil carrying mechanism for tunnel and using method |
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| CN201910882133.9A CN110673221B (en) | 2019-09-18 | 2019-09-18 | Transient electromagnetic coil carrying mechanism for tunnel and using method |
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| CN110673221B CN110673221B (en) | 2020-11-06 |
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