CN211692312U - Non-excavation underground guiding system - Google Patents
Non-excavation underground guiding system Download PDFInfo
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- CN211692312U CN211692312U CN202020126780.5U CN202020126780U CN211692312U CN 211692312 U CN211692312 U CN 211692312U CN 202020126780 U CN202020126780 U CN 202020126780U CN 211692312 U CN211692312 U CN 211692312U
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Abstract
The invention discloses a non-excavation underground guiding system, which adopts an actively excited artificial magnetic field as a beacon, so that an underground directional probe can receive clear beacon magnetic field signals in an environment with magnetic field interference, the attitude parameters and the relative position coordinates of a drilling tool can be accurately measured through a drill-while probe, and data acquired by the drill-while probe is transmitted to ground information processing equipment for processing through a cable penetrating through a drill rod. The wired signal transmission has strong anti-interference capability and is not interfered by stratum barriers. Finally, the relative position from the drill bit to the signal source is calculated, the temperature of the drilling tool is assisted, the borehole track of the measuring point is drawn, the correction index is provided for the drilling direction, and the target finding precision is extremely high.
Description
Technical Field
The utility model relates to a probing technical field specifically relates to a non-excavation underground guidance system.
Background
Traditional open cut construction causes traffic jams, green lands and garden damages and sometimes does not allow excavation construction due to the existence of river channels, water nets, railways, airports and buildings. The trenchless technology is used for underground well construction by utilizing a directional drilling technology and a geophysical exploration technology under the condition of not excavating the ground surface. In trenchless pipe laying engineering, underground guiding is a key technical link. The current position and the current posture of the underground drill bit can be accurately known only through the guide system, and then the guide drilling is controlled to advance according to a preset track, and finally the target point is reached.
In the guiding drilling process, the space coordinate of the drilling position, the drilling pitch angle and the tool face angle are necessary parameters for controlling the drilling track to enable the drilling to accurately hit a target area in a certain position, and the drilling pitch angle and the tool face angle must be continuously tested. The wireless guide locator commonly used in China at present mainly comprises an underground test unit, a ground handheld positioning tracker and a remote monitoring device (ground driller display), as shown in figure 1. The method has the problems of short measuring distance, shallow depth, poor reliability and the like. In view of this, the present application is specifically made.
SUMMERY OF THE UTILITY MODEL
The utility model provides a non-excavation underground guiding system, a non-development excavation construction method and an algorithm corresponding to the system aiming at the defects of the prior art, thereby solving the problems of the influence of construction crossing depth, length, construction environment, complex operation of a computer system and high algorithm analysis error; the construction efficiency is high under the condition of ensuring the precision, and the ground graphical interface can be tracked in real time; the data transmission is more stable and reliable.
The utility model provides a non-excavation underground guiding system, which comprises an artificial magnetic field generating device, a construction power device and ground special data processing equipment; the construction power device comprises a drilling machine and a non-magnetic drill collar connected with the drilling machine; the non-magnetic drill collar comprises a drill rod connected with a drilling machine, a screw motor connected with the drill rod, a drill bit connected with the screw motor, and a while-drilling probe pipe embedded in the non-magnetic drill collar and connected with special data processing equipment on the ground;
the artificial magnetic field generating device is used for generating a magnetic field with equivalent magnetic moment;
the construction power device is used for drilling towards a preset target position, acquiring magnetic field data, acceleration data and temperature data and sending the data to the ground special data processing equipment;
and the ground special data processing equipment is used for calculating the relative position coordinate and the attitude parameter of the drill bit according to the received magnetic field data, acceleration data and temperature data and providing a correction parameter for the drilling direction according to a preset target position.
By adopting the technical scheme, the utility model discloses can gain following technological effect: the utility model discloses an artificial magnetic field of initiative excitation is as the beacon for the directional probe in pit can receive clear beacon magnetic field signal under the environment that has magnetic field interference, and through following posture parameter and the relative position coordinate that the probe can the accurate measurement drilling tool along with the drilling, the data of following the drilling and exploring the collection are through running through the cable in the drilling rod, transmit ground information processing equipment and handle. The wired signal transmission has strong anti-interference capability and is not interfered by stratum barriers. Finally, the relative position from the drill bit to the target point is calculated, the temperature of the drilling tool is assisted, the borehole track of the measuring point is drawn, the correction index is provided for the drilling direction, and the target finding precision is extremely high.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a measurement device according to the prior art according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a trenchless downhole guiding system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of the orthogonal magnetic target scheme in fig. 2 according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of the rotating magnetic joint solution in fig. 2 according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram illustrating a polygonal wire frame scheme in fig. 2 according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram illustrating a single-wire enameled wire scheme according to the embodiment of the present invention in fig. 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 2, an embodiment of the present invention provides a trenchless underground guiding system, which includes an artificial magnetic field generating device, a construction power device and a ground dedicated data processing device; the construction power device comprises a drilling machine 1 and a non-magnetic drill collar 14 connected with the drilling machine through a cable 2; the non-magnetic drill collar 14 comprises a drill rod 4 connected with the drilling machine 1, a screw motor 9 connected with the drill rod 4, a drill bit 5 connected with the screw motor 9, and a drill-following probe pipe 3 embedded in the non-magnetic drill collar 14 and connected with ground special data processing equipment.
The artificial magnetic field generating device is used for generating a magnetic field 6 with equivalent magnetic moment;
the construction power device is used for drilling to a preset target position, acquiring magnetic field 6 data, acceleration data and temperature data and sending the data to the ground special data processing equipment;
and the ground special data processing equipment is used for calculating the relative position coordinate and the attitude parameter of the drill bit 5 according to the received data of the magnetic field 6, the acceleration data and the temperature data and providing a correction parameter for the drilling direction according to a preset target position.
Specifically, the drill-following probe 3 comprises a triaxial fluxgate vector magnetometer, a triaxial accelerometer and a temperature sensor which are all fixed in the nonmagnetic drill collar 14, the triaxial fluxgate vector magnetometer can acquire magnetic field data, the triaxial accelerometer can acquire acceleration data, and the temperature sensor can acquire temperature data.
In order to enable the detection data of the probe while drilling pipe 3 to be more accurate, the probe while drilling pipe 3 further comprises centralizers 10, and the centralizers 10 can be arranged above and below the probe while drilling pipe, as shown in fig. 2.
Further, as shown in fig. 2, the surface-dedicated processing equipment includes a dedicated data processor 11 and a corresponding dedicated construction computer 12, the dedicated data processor 11 and the drill-following probe 3 are connected by a cable 2, and the dedicated data processor 11 and the dedicated construction computer 12 can be connected by a USB232 serial port line 13.
In actual operation, the drill pipe 3 is connected with the centralizer 10 through a thread buckle, the center of the drill pipe 3 is connected with a probe, and all data are transmitted to the ground special data processor 11 from the probe through a cable penetrating through a drill rod. The utility model discloses an artificial magnetic field is as the beacon to for different work condition designs four kinds of different excitation magnetic sources, including the unilateral wire of circular telegram (being short for "single line"), the polygon wire frame of circular telegram (being short for "rectangular wire frame"), the orthogonal double solenoid A and solenoid B of circular telegram (being short for "orthogonal magnetic target") and rotatory magnet steel (being short for "rotatory magnetic joint"), the existing direct current of exciting current also has an exchange, and the magnetic field that the magnetic source sent is detected by the exploring tube along with the drilling in far field department.
The utility model contains four kinds of artificial magnetic field excitation sources, which can pass through the radio control power switch.
First, as shown in fig. 3, the artificial magnetic field generating device includes two axially vertical solenoids a and B with an inserted iron core and tightly wound by enameled wires, and a control device for controlling the on and off of the solenoids a and B, which is called a cross magnetic target for short.
In actual operation, the direction is measured by a GPS or a laser, so that the direction of the solenoid A is parallel to the direction of a base line (the theoretical central line of the construction track). When the device works, the solenoid A and the solenoid B are electrified with alternating currents with different frequencies to generate beacon magnetic fields with different frequencies. The magnetic target is powered by a battery, has high flexibility, and is very concise to place and use and easy to operate.
Secondly, as shown in fig. 4, the artificial magnetic field generating device includes a permanent magnet 7 disposed between the drill bit and the screw motor 9, the drill bit 5 and the screw motor 9 are in a non-magnetic short circuit, both the screw motor 9 and the permanent magnet 7 are disposed in a second drill pipe 8, the permanent magnet 7 emits an alternating magnetic field, referred to as a rotary magnetic joint for short, in the process of rotating the drill bit 5, the rotary magnetic joint is placed into a target well without drilling of a drill collar, and magnetic field data generated by the rotary magnetic joint is received by the opposite drill pipe 3 in the target well, so as to calculate the relative position between the drill pipe 3 and the rotary magnetic joint. The advantage of using the rotary magnetic joint for guiding the penetration is that the detection precision of the three-axis fluxgate vector magnetometer is higher and higher along with the drilling, the penetration 5 operation is finally and accurately completed, and the method is suitable for trenchless long-distance butt joint penetration.
Thirdly, as shown in fig. 5, the artificial magnetic field generating device includes a closed polygonal wire frame 51 surrounded by the enamel wire on the ground and a signal power source connected to both ends of the wire frame. Specifically, for magnetic field signal stabilization, the polygonal wire frame encloses an area of 4 square meters or more.
If the target area is flat, the target area is suitable for wiring, a rectangular wire frame is preferably built, and a polygon is allowed. The size of the wire frame wiring depends on the specific construction depth. The wire frame can be connected with a direct current power supply or an alternating current power supply, and on the premise that the saturation of the three-axis fluxgate vector magnetometer is not exceeded, the larger the current is, the better the current is. The coordinates of the vertices of the wireframe are measured using a total station or GPS. The magnetic source has the advantages of light weight, low cost and low energy consumption.
Fourthly, as shown in fig. 6, the artificial magnetic field generating device includes a single-wire enameled wire 52 and a signal generating source, the single-wire enameled wire is arranged on the ground, one end of the single-wire enameled wire is inserted into the ground, and the other end of the single-wire enameled wire is connected to a signal power supply.
The wire is pulled to the target area along the upper ground of the preset crossing track, direct current or alternating current can be conducted, and the larger the current is, the better the current is on the premise that the saturation of the three-axis fluxgate vector magnetometer is not exceeded. And measuring the included angle between the position of the drill bit into the earth and the direction of the lead and the base line by using a total station or a GPS. The magnetic source has the advantages of simple structure and flexible erection.
Further, the ground special processing device is specifically configured to calculate and determine the relative position coordinates and attitude parameters of the drill bit 5 according to the magnetic field data, acceleration data and temperature data acquired by the drill-following probe 3, and provide correction parameters for the drilling direction according to a preset target position;
wherein the relative position coordinates and attitude parameters of the drill bit 5 include a borehole inclination angle, an azimuth angle, a tool face angle, a vertical depth coordinate, a north coordinate, and an east coordinate.
In actual operation, the artificial magnetic field generating device is installed on the ground and is connected with a corresponding power supply.
The power supply is provided with a remote control switch, and a field engineer controls the excitation and the closing of the artificial magnetic field. The rectangular wire frame needs to be wired according to the specific condition of construction depth, the magnetic target needs to be horizontally placed, and the single wire needs to be pulled according to a preset direction. The position coordinates of the soil point of the drilling machine 1 and the position coordinates of the artificial magnetic field generating device are measured by a total station or a GPS.
The special data processor 11 is provided with a binding post connected with the probe while drilling 3, which can not only supply power to the probe while drilling 6 3, but also receive data signals transmitted by the probe while drilling 3.
The data signal transmitted by the cable is processed 11 by the special data processor, and then is input into the special construction computer 12 from the RS232 interface switching USB interface on the special data processor 11. During data acquisition, the drill bit 5 is in a slow rotation or stop rotation state, the well depth H corresponds to the acquired data magnetic field three-component data Mx, My and Mz, the acceleration three-component data Gx, Gy and Gz and the temperature data T, and then the well inclination angle, the azimuth angle, the tool face angle, the vertical depth coordinate, the north coordinate and the east coordinate of the well drilling are calculated by data analysis software according to a model and an algorithm of magnetic field positioning. And then giving out a well deviation correction angle, an azimuth correction angle, a tool face compensation angle and a borehole trajectory diagram according to a preset drilling machine trajectory for a drilling engineer to refer to on site. Finally, the target area is accurately hit or the through-penetration is completed.
The utility model provides a whole set of non-excavation underground guidance system towards complicated operating mode can accurate determination drilling tool well skew angle, azimuth, instrument face angle, vertical depth coordinate, north coordinate and east coordinate parameter, for the direction of drilling provides the correction index, has the extremely high target precision of seeing.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (9)
1. A non-excavation underground guiding system is characterized by comprising an artificial magnetic field generating device, a construction power device and ground special data processing equipment; the construction power device comprises a drilling machine and a non-magnetic drill collar connected with the drilling machine; the non-magnetic drill collar comprises a drill rod connected with a drilling machine, a screw motor connected with the drill rod, a drill bit connected with the screw motor, and a while-drilling probe pipe embedded in the non-magnetic drill collar and connected with special data processing equipment on the ground;
the artificial magnetic field generating device is used for generating a magnetic field with equivalent magnetic moment;
the construction power device is used for drilling towards a preset target position, acquiring magnetic field data, acceleration data and temperature data and sending the data to the ground special data processing equipment;
and the ground special data processing equipment is used for calculating the relative position coordinate and the attitude parameter of the drill bit according to the received magnetic field data, acceleration data and temperature data and providing a correction parameter for the drilling direction according to a preset target position.
2. The system of claim 1, wherein said artificial magnetic field generating means comprises two axially perpendicular, ironed, solenoids a and B tightly wound with enameled wire, and control means to control the energization and de-energization of the solenoids a and B.
3. The system of claim 1, wherein the artificial magnetic field generating means comprises a permanent magnet disposed between the drill bit and the progressive cavity motor.
4. The system according to claim 1, wherein the artificial magnetic field generating device comprises a closed polygonal wire frame formed by enclosing enameled wires on the ground and a signal power supply connected with two ends of the wire frame.
5. The system according to claim 1, wherein the artificial magnetic field generating device comprises a single-wire enameled wire arranged on the ground and a signal generating source, wherein one end of the single-wire enameled wire is inserted into the ground, and the other end of the single-wire enameled wire is connected with the signal power supply.
6. The system of claim 1, wherein the while drilling probe comprises a three-axis fluxgate vector magnetometer, a three-axis accelerometer, and a temperature sensor, all secured within the nonmagnetic drill collar.
7. The system of claim 6, wherein the while drilling probe further comprises a centralizer.
8. The system of claim 1, wherein the ground-specific processing equipment comprises a dedicated data processor and a corresponding dedicated construction computer;
the special data processor is connected with the while-drilling probe by a cable;
the special data processor is connected with the special construction computer through a USB232 serial port line.
9. The system as claimed in claim 8, wherein the surface-dedicated processing device is specifically configured to calculate and determine the relative position coordinates and attitude parameters of the drill bit according to the magnetic field data, acceleration data and temperature data acquired by the drill-while-drilling probe, and provide correction parameters for the drilling direction according to preset target positions;
wherein the relative position coordinates and attitude parameters of the drill bit include a borehole inclination angle, an azimuth angle, a tool face angle, a vertical depth coordinate, a north coordinate, and an east coordinate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020126780.5U CN211692312U (en) | 2020-01-19 | 2020-01-19 | Non-excavation underground guiding system |
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| CN202020126780.5U CN211692312U (en) | 2020-01-19 | 2020-01-19 | Non-excavation underground guiding system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111173451A (en) * | 2020-01-19 | 2020-05-19 | 河北韶通翱达科技有限公司 | Non-excavation underground guiding system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173451A (en) * | 2020-01-19 | 2020-05-19 | 河北韶通翱达科技有限公司 | Non-excavation underground guiding system |
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