CN-114923516-B - Temperature and pressure feedback type temperature control multi-parameter comprehensive probe rod suitable for polar region engineering

CN114923516BCN 114923516 BCN114923516 BCN 114923516BCN-114923516-B

Abstract

The invention relates to the technical field of in-situ exploration, in particular to a temperature and pressure feedback type temperature control multi-parameter comprehensive probe rod suitable for polar region engineering. The outside of the probe rod is coated with a heat preservation coating, the tip of the cone head is provided with a cone tip hole pressure sensor, the cone head is also provided with a cone tip sensor, the inside of the rod body is provided with a cone shoulder hole pressure sensor, a high-precision micro camera, a temperature probe, a side friction resistance sensor, a soil pressure sensor, a multiparameter ground sensor, an acoustic wave sensor, an information comprehensive processing module, a power supply module and a vacuum pump from bottom to top, sealing rings are arranged between the components, the center of the rod body is fixedly penetrated with a control Wen Xinzhu, one end of the control Wen Xinzhu facing the cone tip is provided with a connecting screw, and the control Wen Xinzhu is fixedly connected with the cone tip through external threads at the end part of the control screw. The method can protect ecology in cold regions, improve detection precision and realize in-situ acquisition of physical and mechanical property parameters of the polar frozen geological materials.

Inventors

CUI YUXUE
YANG ZHONGNIAN
LING XIANCHANG
LIU TAO
LIU XUESEN
Cheng Zhaojie
XU ZHENGYI
QIN XIPENG

Assignees

青岛理工大学
中国海洋大学
哈尔滨工业大学
青岛磐垚新材料工程研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20220428

Claims (5)

1. The temperature and pressure feedback type temperature control multi-parameter comprehensive probe rod suitable for polar engineering comprises a conical head and a rod body, wherein the conical head is fixed at the bottom end of the rod body, and the temperature and pressure feedback type temperature control multi-parameter comprehensive probe rod is characterized in that the outer sides of the probe rod are coated with heat preservation coatings (15); The tip of the cone head is provided with a cone tip hole pressure sensor (1), and the cone head is also provided with a cone tip sensor (2); A conical shoulder hole pressure sensor (3), a high-precision micro camera (24), a temperature probe (22), a side friction resistance sensor (5), a soil pressure sensor (9), a multi-parameter type sensor (10), an acoustic wave sensor (17), an information comprehensive processing module (13), a power supply module (14) and a vacuum pump (26) are arranged in the rod body from bottom to top, a sealing ring (18) is arranged between each component, the center of the rod body is fixedly penetrated with a control Wen Xinzhu (29), one end of the control Wen Xinzhu (29) facing the conical tip is provided with a connecting screw (25), the control Wen Xinzhu (29) is fixedly connected with the conical tip through external threads at the end part of the connecting screw, and the conical shoulder hole pressure sensor (3), the side friction resistance sensor (5), the soil pressure sensor (9), the multi-parameter type sensor (10), the acoustic wave sensor (17), the power supply module (14) and the control Wen Xinzhu (29) are respectively and electrically connected with the information comprehensive processing module (13); the cone shoulder hole pressure sensor (3) is fixedly extruded between the cone tip and the high-precision micro camera (24), the high-precision micro camera (24) is fixed on the swivel (4), the swivel (4) rotates 360 degrees along the circumference of the rod, and the swivel (4) is connected with a connecting screw (25) at the end part of the control Wen Xinzhu (29) through threads by internal threads on the inner surface of the swivel; the temperature probes (22) are arranged above the high-definition micro-camera and are uniformly arranged at intervals along the equal height direction of the periphery of the rod, and one end of each temperature probe (22) is fixedly connected with the corresponding control Wen Xinzhu (29); The utility model discloses a pole body, including pole body, baffle, air duct (28) and vent hole (27) are equipped with, pole body is last evenly spaced along its axial to set up several annular storage bin (8), be equipped with the baffle in annular storage bin (8), the baffle is with annular storage bin (8) divide into water collecting chamber (19) and air collecting chamber (7), all be equipped with the opening on the lateral wall of water collecting chamber (19) and air collecting chamber (7), the opening part of water collecting chamber (19) and air collecting chamber (7) all is equipped with sealing door (20), the sealing door inboard of water collecting chamber 19 () is equipped with filter screen membrane (21), the sealing door inboard of air collecting chamber (7) is equipped with waterproof ventilative microporous membrane (6), link to each other through air duct (28) between each annular storage bin (8) on the pole body, air duct (28) set up in the center of accuse Wen Xinzhu (29), and the top of air duct (28) is connected with vacuum pump (26) that are located pole body top.
2. The temperature and pressure feedback type temperature control multi-parameter comprehensive probe rod suitable for polar engineering according to claim 1, wherein the high-definition micro camera (24) comprises a high-definition lens (27 '), a zoom aperture (28') and a light source (23).
3. The temperature and pressure feedback type temperature control multi-parameter comprehensive probe rod suitable for polar engineering according to claim 1 is characterized in that the soil pressure sensors (9) are uniformly arranged at intervals along the equal height direction of the rod circumference.
4. The temperature and pressure feedback type temperature control multi-parameter comprehensive probe rod suitable for polar engineering according to claim 1, wherein the multi-parameter localization sensor (10) adopts a semi-permeable side wall, a plurality of through holes are arranged on the side wall of a rod body outside the multi-parameter localization sensor (10) at intervals, and an ion selective electrode is arranged in the multi-parameter localization sensor.
5. The temperature and pressure feedback type temperature control multi-parameter comprehensive probe rod suitable for polar engineering according to claim 1 is characterized in that a double-frequency piezoelectric transducer is respectively arranged at the upper end and the lower end of the acoustic wave sensor (17), the transducer above the acoustic wave sensor (17) is a double-frequency acoustic wave transmitting end (12), the transducer below the acoustic wave sensor (17) is a double-frequency acoustic wave receiving end (11), in the penetrating process, the double-frequency acoustic wave transmitting end (12) above the acoustic wave sensor (17) alternately transmits high-frequency and low-frequency acoustic waves, and the double-frequency acoustic wave receiving end (11) below the acoustic wave sensor (17) receives signals.

Description

Temperature and pressure feedback type temperature control multi-parameter comprehensive probe rod suitable for polar region engineering Technical Field The invention relates to the technical field of in-situ exploration, in particular to a temperature and pressure feedback type temperature control multi-parameter comprehensive probe rod suitable for polar region engineering. Background The resource detection and development of frozen circle areas have higher and higher requirements on the service performance, stability, bearing capacity and the like of building sites or foundations. Frozen geologic materials are spatially diverse in composition, structure and nature, and thus are difficult to sample, test and classify, and there is a need to find a new in situ test means. Compared to laboratory tests, in situ tests tend to yield more accurate and consistent results than laboratory tests without the need for sampling. Static Cone Penetration Test (CPT) is widely used for in-situ test of geotechnical engineering due to the advantages of economy, rapidness and high efficiency, can directly or indirectly obtain a section of soil property under a certain depth, and carries out theoretical deduction and inversion on soil parameters through a large amount of in-situ test data so as to accurately divide soil layers and judge soil types. CPT technology and sensing technology applied to common soil layers and shallow sea areas are mature at present, and engineering application in polar regions is only in a starting stage, so that a great deal of technical blank still exists. At present, researchers improve conventional CPT equipment, so that the CPT equipment is suitable for geological detection of the environment of a polar region frozen earth ring area, field tests are carried out on antarctic regions, evaluation of avalanche, snowfield environment bearing capacity and the like is tried, and feasibility of application of the penetration detection technology in the frozen earth ring area such as polar region snow, land ice, sea ice and frozen earth is verified. However, the existing CPT probe rod has the problems of single test parameters, shallower detection depth, lower detection intensity, significant influence on the surrounding environment caused by penetrating heat, and the like, only a small amount of in-situ physical and mechanical properties of materials at shallow depth can be obtained, comprehensive exploration and development of sites in frozen circle areas cannot be well met, and the secondary injury caused by in-situ test can be further enhanced due to heat exchange between the penetrating process of the probe rod and ice. Disclosure of Invention The invention aims to overcome the defects in the prior art, and provides a temperature and pressure feedback type temperature control multi-parameter comprehensive probe rod suitable for polar region engineering, which can protect ecology in cold regions, improve detection precision and realize in-situ acquisition of physical and mechanical property parameters of polar frozen geological materials. The technical scheme of the invention is that the temperature and pressure feedback type temperature control multi-parameter comprehensive probe rod suitable for polar engineering comprises a conical head and a rod body, wherein the conical head is fixed at the bottom end of the rod body, and the outer sides of the probe rods are coated with heat preservation coatings; The tip of the cone head is provided with a cone tip hole pressure sensor, and the cone head is also provided with a cone tip sensor; A conical shoulder hole pressure sensor, a high-precision micro camera, a temperature probe, a side friction resistance sensor, a soil pressure sensor, a multiparameter sensor, an acoustic wave sensor, an information comprehensive processing module, a power supply module and a vacuum pump are arranged in the rod body from bottom to top, a sealing ring is arranged between each component, the center of the rod body is fixedly penetrated with a control Wen Xinzhu, one end of the control Wen Xinzhu, which faces towards the conical tip, is provided with a connecting screw, the control Wen Xinzhu is fixedly connected with the conical tip through external threads at the end part of the control Wen Xinzhu, and the conical shoulder hole pressure sensor, the side friction resistance sensor, the soil pressure sensor, the multiparameter sensor, the acoustic wave sensor, the power supply module and the control Wen Xinzhu are respectively and electrically connected with the information comprehensive processing module; the taper shoulder hole pressure sensor is fixedly extruded between the taper tip and the high-precision micro camera, the high-precision micro camera is fixed on the swivel, the swivel rotates 360 degrees along the circumference of the rod, and the swivel is connected with a connecting screw at the end part of the control Wen Xinzhu through threads on the inner surfac