CN212454335U - Informatization drilling system suitable for advance prediction of unfavorable geological structural surface - Google Patents
Informatization drilling system suitable for advance prediction of unfavorable geological structural surface Download PDFInfo
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- CN212454335U CN212454335U CN202021142352.8U CN202021142352U CN212454335U CN 212454335 U CN212454335 U CN 212454335U CN 202021142352 U CN202021142352 U CN 202021142352U CN 212454335 U CN212454335 U CN 212454335U
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Abstract
The utility model discloses an information-based drilling system suitable for advance prediction of unfavorable geological structure face aims at overcoming weak intermediate layer drilling technique among the prior art and just can discern the weak layer through getting the core appraisal weak point to in time discover the spatial distribution position of unfavorable geologic body or geological structure face among the probing process. The system comprises a computer, a drilling machine, a geological radar, a drill rod and a drill bit, wherein the drill rod is connected with the drilling machine, the drill bit is arranged at the tail end of the drill rod, the interior of the drill rod is of a hollow structure, the geological radar is arranged inside the drill rod and movably connected with the drill rod, and the computer is electrically connected with the geological radar. The method mainly comprises the following steps: drilling is arranged for system erection; when a drill rod is required to be added, the electric wire passes through the bottom of the drill rod and the top of the drill rod to be connected with a computer; the drill bit drills downwards, the geological radar works and communicates with a computer, and the computer interprets and analyzes the received medium information and the received geometric form information to form a radar image.
Description
Technical Field
The utility model relates to a geotechnical engineering and hydraulic and hydroelectric engineering field especially relate to an information-based drilling system suitable for unfavorable geological structure face advanced prediction.
Background
In the hydraulic and hydroelectric engineering, soft structural planes such as fault fracture zones and interlaminar dislocation zones play a decisive role in the stability of large underground caverns, so that whether the exposure positions of the above unfavorable geological structural planes can be accurately predicted before the caverns are excavated becomes a key for designing success or failure. At present, the geological conditions of the underground cavern are mainly detected by drilling and coring, geological logging and taking samples for indoor test, the whole process is complicated, the period is long, manpower and material resources are wasted, and the cost is increased.
In the geotechnical engineering investigation process, the distribution condition of the soft interlayer is the key point of investigation. The weak interlayer is a common poor geologic body, and the sampling of the weak interlayer is often required to carry out physical and mechanical parameter testing. When the drill meets a weak interlayer, the soil sample with small disturbance degree can be obtained only by taking extra caution during sampling, so that the prejudgment on whether the weak layer exists is particularly important, the traditional drilling can only be identified by coring identification when the drill drills to the layer, and at the moment, the weak zone can be lost in the drilling process and cannot obtain an original sample, only the drill holes can be rearranged, and the cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome weak intermediate layer probing technique among the prior art weak layer weak point that can only discern through getting the core appraisal, provide an information-based probing system and method to bad geological structure face advanced prediction to in time discover the spatial distribution position of bad geological body or geological structure face among the probing process.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses an information-based drilling system suitable for advance prediction of unfavorable geological structure face, the system includes computer, rig, geological radar, drilling rod and drill bit, and the rig is connected to the drilling rod, and the drill bit sets up in the end of drilling rod, the inside hollow structure that is of drilling rod, geological radar set up in the drilling rod inside and with drilling rod swing joint, computer electricity connects the geological radar.
Preferably, the inner wall of the hollow structure of the drill rod is provided with an annular positioning groove, a cross beam is arranged in the drill rod, two ends of the cross beam are connected with the positioning groove in a sliding mode, and the top of the geological radar is connected with the cross beam.
Preferably, the geological radar comprises a radar transmitting section and a radar receiving section, and the radar receiving section is positioned below the radar transmitting section.
Preferably, the two ends of the cross beam are provided with balls embedded in the positioning grooves.
Preferably, the geological radar outer cover is provided with a waterproof cover.
The utility model simultaneously provides an information-based drilling method suitable for unfavorable geological structure face advanced prediction, the method includes following step:
step 1, leveling a field, erecting a drilling machine, connecting a drill rod with the drilling machine, connecting a drill bit with the drill rod, and connecting a geological radar with a computer through a wire;
and 4, the computer interprets and analyzes the received medium information and the geometric form information to form a radar image, and carries out geological interpretation on the image formed by the geological radar to determine the distribution space range of the geological structure surface or the isolated abnormal body.
In the traditional geological drilling of the underground cavern, geological conditions can only be determined after core taking is finished and geological record of a drill core is carried out when the final hole is drilled. And the utility model discloses can predict the spatial distribution of lower part geological structure face at any time at the probing in-process for the time limit for a project, practice thrift labour cost.
The geological radar has reliable detection data and can truly position the position of a geological structure surface, a karst cave or an empty surface. In the water conservancy and hydropower engineering, before the underground cavern is excavated, the spatial distribution of the unfavorable geological structural plane can be judged in advance in time, so that the support design work is facilitated; in geotechnical engineering investigation, the position of the soft interlayer can be predicted in advance, the sampling tool can be replaced in time, a soil sample meeting the test requirements can be obtained, and more accurate physical and mechanical parameters of the soil body can be provided for design.
Simple punching can only test the condition of the bad geologic body in the drilling range that bores, and the utility model discloses can survey the distribution development condition of the geological structure face of certain extent outside the drilling periphery.
Drawings
Fig. 1 is the utility model discloses an information-based drilling system schematic diagram suitable for unfavorable geologic structure face advance prediction.
Fig. 2 is a partial structure view of a beam portion of an information-based drilling system suitable for advance prediction of an unfavorable geological structural plane.
Fig. 3 is the utility model discloses a contrast show picture of achievement user state of information-based drilling system suitable for unfavorable geologic structure face advance prediction.
The figure is marked with: 1. a computer; 2. a drilling machine; 3. a cross beam; 301. a radar transmitting section; 302. a radar receiving section; 303. a waterproof cover; 4. a drill stem; 401. positioning a groove; 402. a ball bearing; 5. a drill bit; 6. an interlaminar dislocation zone; 601. inter-layer dislocation band images; 7. fault breaking; 701. a tomographic image; 8. isolating an anomaly; 801. isolating an anomaly image; 9. drilling; 10. an electric wire.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the utility model discloses an information-based drilling system suitable for advance prediction of unfavorable geological structure face, characterized by, the system includes computer 1, rig 2, geological radar, drilling rod 4 and drill bit 5, and the rig is connected to the drilling rod, and the drill bit sets up in the end of drilling rod, the inside hollow structure that is of drilling rod, geological radar set up in the drilling rod inside and with drilling rod swing joint, computer electricity connects the geological radar.
As shown in fig. 2, the inner wall of the hollow structure of the drill rod is provided with an annular positioning groove 401, a cross beam 3 is arranged in the drill rod, two ends of the cross beam are connected with the positioning groove in a sliding manner, and the top of the geological radar is connected with the cross beam. Balls 402 embedded in the positioning grooves are provided at both ends of the beam. The geological radar is covered with a waterproof cover. The geological radar comprises a radar transmitting section 301 and a radar receiving section 302, and the radar receiving section is positioned below the radar transmitting section.
Crossbeam and constant head tank sliding connection, and the ball in the constant head tank reduces the coefficient of friction of crossbeam and constant head tank, guarantees that the drilling rod drills the gyration in-process, and the geological radar does not rotate along with the drilling rod, and the geological radar is outside to be protected with the buckler, avoids receiving the water to erode.
When drilling is carried out, high-frequency electromagnetic wave pulses are transmitted to surrounding strata through a geological radar transmitting node in a geological radar drill rod, when a geological structure surface or a geological body with electrical property difference (dielectric constant and conductivity) is met, the electromagnetic waves are reflected, a receiving node receives electrical property and geometric form information of a stratum medium carried by the electromagnetic waves, a radar image is formed through a computer, and geological explanation is carried out on the radar image according to information such as amplitude, frequency, phase and travel time of the reflected waves in the image, so that geological conditions are predicted in advance. The scheme has obvious advantages in water conservancy and hydropower underground cavern investigation and can predict the position of the geological structure surface.
The utility model simultaneously provides an information-based drilling method suitable for unfavorable geological structure face advanced prediction, the method includes following step:
step 1, leveling a field, erecting a drilling machine 2, connecting a drill rod 4 with the drilling machine 2, connecting a drill bit 5 with the drill rod 4, and connecting a geological radar with a computer 1 through a wire 10;
and 4, the computer interprets and analyzes the received medium information and the geometric form information to form a radar image, and carries out geological interpretation on the image formed by the geological radar to determine the distribution space range of the geological structure surface or the isolated abnormal body.
Fig. 3 is a comparison display diagram of the result use state of the information-based drilling system suitable for advance prediction of an unfavorable geological structure surface according to the present embodiment, in which the interbedded dislocation zone 6 located below the borehole 9 corresponds to the interbedded dislocation zone image 601, the fault 7 corresponds to the fault image 701, and the isolated anomaly 8 corresponds to the isolated anomaly image 801.
In the traditional geological drilling of the underground cavern, geological conditions can only be determined after core taking is finished and geological record of a drill core is carried out when the final hole is drilled. And the utility model discloses can predict the spatial distribution of lower part geological structure face at any time at the probing in-process for the time limit for a project, practice thrift labour cost.
The geological radar has reliable detection data and can truly position the position of a geological structure surface, a karst cave or an empty surface. In the water conservancy and hydropower engineering, before the underground cavern is excavated, the spatial distribution of the unfavorable geological structural plane can be judged in advance in time, so that the support design work is facilitated; in geotechnical engineering investigation, the position of the soft interlayer can be predicted in advance, the sampling tool can be replaced in time, a soil sample meeting the test requirements can be obtained, and more accurate physical and mechanical parameters of the soil body can be provided for design.
Simple punching can only test the condition of the bad geologic body in the drilling range that bores, and the utility model discloses can survey the distribution development condition of the geological structure face of certain extent outside the drilling periphery.
Claims (5)
1. The information drilling system is characterized by comprising a computer, a drilling machine, a geological radar, a drill rod and a drill bit, wherein the drill rod is connected with the drilling machine, the drill bit is arranged at the tail end of the drill rod, the inside of the drill rod is of a hollow structure, the geological radar is arranged inside the drill rod and movably connected with the drill rod, and the computer is electrically connected with the geological radar.
2. The informatization drilling system suitable for advanced prediction of the unfavorable geological structure surface according to claim 1, wherein the inner wall of the hollow structure of the drill pipe is provided with an annular positioning groove, a cross beam is arranged in the drill pipe, two ends of the cross beam are slidably connected with the positioning groove, and the top of the geological radar is connected with the cross beam.
3. The system of claim 1, wherein the geological radar comprises a radar transmitting section and a radar receiving section, and the radar receiving section is positioned below the radar transmitting section.
4. The system of claim 1, wherein the cross member has balls at both ends thereof inserted into the positioning grooves.
5. The informatization drilling system suitable for advanced prediction of adverse geological structural surfaces of claim 1, wherein the geological radar exterior is covered with a waterproof cover.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021142352.8U CN212454335U (en) | 2020-06-19 | 2020-06-19 | Informatization drilling system suitable for advance prediction of unfavorable geological structural surface |
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| CN202021142352.8U CN212454335U (en) | 2020-06-19 | 2020-06-19 | Informatization drilling system suitable for advance prediction of unfavorable geological structural surface |
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| CN212454335U true CN212454335U (en) | 2021-02-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622700A (en) * | 2020-06-19 | 2020-09-04 | 中国电建集团华东勘测设计研究院有限公司 | Informatization drilling system and method suitable for advance prediction of unfavorable geological structural surface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622700A (en) * | 2020-06-19 | 2020-09-04 | 中国电建集团华东勘测设计研究院有限公司 | Informatization drilling system and method suitable for advance prediction of unfavorable geological structural surface |
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