CN-122014110-A - Directional drilling and soil sample collecting device

CN122014110ACN 122014110 ACN122014110 ACN 122014110ACN-122014110-A

Abstract

The invention provides a directional drilling and soil sampling device which comprises a drilling soil sampling unit, a connecting unit and a control unit which are sequentially connected, wherein the control unit is used for controlling soil sampling operation and the advancing direction of a drill bit of the drilling soil sampling unit, the drilling soil sampling unit comprises the drill bit, an electromagnetic sensor, a soil sampler and a fixing device which are sequentially connected, the rear side of the soil sampler is provided with a guiding device, the fixing device is arranged outside the guiding device, the drill bit, the electromagnetic sensor and the soil sampler are of hollow structures, one end of the electromagnetic sensor is connected with the soil sampler through threads, the other end of the electromagnetic sensor is connected with the drill bit in a rotating mode, the drill bit is driven to rotate, and the advancing direction of the drill bit is adjusted through a telescopic bearing column. The directional drilling and soil sample taking device has strong penetrating capability, controllable track, reduced drilling cost, reduced disturbance to stratum in the drilling process, improved drilling working environment and realization of accurate detection of geological conditions of a target area.

Inventors

ZHANG ZHENMIN
HUANG BEI
GUO YIN
ZHANG YONG
Li Yapo
SUN SHUAIQIN
GAO MEILING
LIN CHENGHAO
TAO TAO
GE YI

Assignees

北京市市政工程设计研究总院有限公司

Dates

Publication Date: 20260512
Application Date: 20260331

Claims (10)

1. The directional drilling and soil sampling device is characterized by comprising a drilling soil sampling unit, a connecting unit and a control unit which are sequentially connected, wherein the control unit is used for controlling the soil sampling operation of the drilling soil sampling unit and the advancing direction of a drill bit, the drilling soil sampling unit comprises the drill bit, an electromagnetic sensor, a soil sampler and a fixing device which are sequentially connected, the rear side of the soil sampler is connected with the fixing device, one end of the fixing device, which is close to the soil sampler, is provided with a guiding device, the drill bit, the electromagnetic sensor and the soil sampler are of hollow structures, one end of the electromagnetic sensor is connected with the soil sampler through threads, the other end of the electromagnetic sensor is connected with the drill bit in a rotating mode, the drill bit is driven to rotate, and the advancing direction of the drill bit is adjusted through a telescopic bearing column.
2. The device for directional drilling and soil sample collection according to claim 1, wherein the drill bit is hollow and cylindrical, and comprises a sawtooth part and a rotating part which are sequentially connected from front to back, wherein the rotating part is provided with a permanent magnet material corresponding to the driving part of the electromagnetic sensor.
3. The device for directional drilling and soil sample collection according to claim 2, wherein a U-shaped concave space is formed in the rear end face of the rotating portion, the U-shaped concave space is connected with the driving portion of the electromagnetic sensor, and a limiting block is arranged in the U-shaped concave space to prevent the electromagnetic sensor from falling off.
4. The directional drilling and soil sampling device according to claim 1, wherein the electromagnetic sensor comprises a driving part and a connecting part which are connected, the driving part is positioned in the U-shaped concave space of the rotating part and is limited by a limiting block, the driving part is provided with a distributed stator winding so as to drive permanent magnet materials of the rotating part, and the connecting part is fixedly connected with the soil sampler through threads.
5. The directional drilling and soil sampling apparatus according to claim 1, wherein the rear portion of the sampler is provided with a pressure valve for evacuating the sampler of gas.
6. The device for directional drilling and soil sample collection according to claim 1, wherein the rear side of the soil sampler is connected with a fixing device, a pushing plate is arranged on the rear side of the soil sampler, a supporting plate is arranged in the fixing device, the guiding device comprises a plurality of telescopic bearing columns which are arranged on the supporting plate, the bearing columns are driven by electric cylinders, the bearing columns apply force to the pushing plate of the soil sampler, and the drill bit is deflected by pushing forces at different positions on the pushing plate.
7. The device for directional drilling and soil sample collection according to claim 6, wherein one end of the pressure-bearing column is fixedly connected with the push plate through a universal joint, the other end of the pressure-bearing column is fixedly connected with the support plate through an electric cylinder, and the plurality of pressure-bearing columns are uniformly arranged on the same circumference.
8. The device for directional drilling and soil sample collection according to claim 7, wherein a center universal joint is arranged at the center of the push plate, the center universal joint is fixedly connected with the center of the support plate through a connecting rod, and the center universal joint is positioned at the center of the same circumference where the plurality of pressure-bearing columns are positioned.
9. The device for directional drilling and soil sample collection according to claim 1, wherein the fixing device comprises a pushing end and a supporting end, the supporting end is telescopically inserted into the pushing end, a supporting plate is arranged in the pushing end, a bearing column is arranged on one side of the supporting plate, facing the soil sampler, of the supporting plate, a plurality of electric telescopic rods connected with the supporting end are arranged on the other side of the supporting plate, and the supporting end is pulled into the pushing end through the electric telescopic rods.
10. The device for directional drilling and soil sample collection according to claim 1, wherein the support end is connected with the connecting pipe of the connecting unit, a plurality of support columns facing to the outer side are arranged on the periphery of the support end, the support columns adopt electric telescopic rods, one ends of the support columns are installed inside the support end through fixing blocks, and support legs for supporting the wall of the hole are arranged on the other ends of the support columns.

Description

Directional drilling and soil sample collecting device Technical Field The invention relates to a geotechnical engineering investigation device, in particular to a device for directional drilling and soil sampling. Background Drilling and sampling of earth samples is one of the important aspects of geotechnical engineering investigation in order to further ascertain the geological condition of subsurface projects and the geological parameters of each formation. However, the method has the following problems that (1) vertical drilling is adopted at present, and stratum among drilling holes can only be estimated and the stratum characteristics of a investigation site cannot be truly reflected due to the transverse interval distance when the drilling holes are arranged, (2) vertical drilling is difficult to implement and has a longer period and potential safety hazard due to the influence of ground structures and underground pipelines under the condition of complex site environment, (3) the arrangement of vertical drilling causes more ineffective drilling workload at the upper part of a tunnel in the process of investigation of a tunnel in a steep mountain area, and (4) the cost of vertical drilling is higher in the process of investigation of a water area. (5) During the drilling process of the drilling machine, the drill rod and the drill bit rotate together, so that stratum in the drilled hole is greatly disturbed, and the hole is easy to collapse. (6) In the drilling process, the drill rod is required to be frequently disassembled and assembled according to the influence of the drilling times. (7) Frequent equipment transfers are required when drilling due to the scattered placement of the drill sites. Disclosure of Invention The invention provides a device for directional drilling and soil sample collection, which solves the problems of directional control and positioning of the direction of a drill bit in the process of soil sample taking, and the technical scheme is as follows: The directional drilling and soil sampling device comprises a drilling soil sampling unit, a connecting unit and a control unit which are sequentially connected, wherein the control unit is used for controlling the soil sampling operation of the drilling soil sampling unit and the advancing direction of a drill bit, the drilling soil sampling unit comprises the drill bit, an electromagnetic sensor, a soil sampler and a fixing device which are sequentially connected, the rear side of the soil sampler is connected with the fixing device, one end of the fixing device, which is close to the soil sampler, is provided with a guiding device, the drill bit, the electromagnetic sensor and the soil sampler are of hollow structures, one end of the electromagnetic sensor is connected with the soil sampler through threads, the other end of the electromagnetic sensor is connected with the drill bit in a rotating mode, the drill bit is driven to rotate, and the advancing direction of the drill bit is adjusted through a telescopic bearing column. The drill bit is hollow and cylindrical, and comprises a sawtooth part and a rotating part which are sequentially connected from front to back, wherein a permanent magnet material is arranged at the position of the rotating part corresponding to the driving part of the electromagnetic inductor. The rear end face of the rotating part is provided with a U-shaped concave space, the U-shaped concave space is connected with a driving part of the electromagnetic inductor, and a limiting block is arranged in the U-shaped concave space to prevent the electromagnetic inductor from falling off. The electromagnetic inductor comprises a driving part and a connecting part which are connected, wherein the driving part is positioned in a U-shaped concave space of the rotating part and is limited by a limiting block, the driving part is provided with a distributed stator winding so as to drive permanent magnet materials of the rotating part, and the connecting part is fixedly connected with the soil sampler through threads. The rear part of the soil sampler is provided with a pressure valve for evacuating the gas of the soil sampler. The rear side of the soil sampler is connected with a fixing device, a push plate is arranged on the rear side of the soil sampler, a supporting plate is arranged in the fixing device, the guide device comprises a plurality of telescopic bearing columns which are arranged on the supporting plate, the bearing columns are driven by an electric cylinder, the bearing columns apply force to the push plate of the soil sampler, and the drill bit is deflected by the thrust of different positions on the push plate. One end of each bearing column is fixedly connected with the push plate through a universal joint, the other end of each bearing column is fixedly connected with the support plate through an electric cylinder, and the plurality of bearing columns are uniformly arranged on the same circum