CN106480870B - A kind of static sounding probe - Google Patents

A kind of static sounding probe Download PDF

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Publication number
CN106480870B
CN106480870B CN201611092442.9A CN201611092442A CN106480870B CN 106480870 B CN106480870 B CN 106480870B CN 201611092442 A CN201611092442 A CN 201611092442A CN 106480870 B CN106480870 B CN 106480870B
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China
Prior art keywords
sensor
mandrel
water pressure
pore water
mounting base
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CN201611092442.9A
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CN106480870A (en
Inventor
张民生
王振豪
季念迎
贾永刚
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Ocean University of China
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Ocean University of China
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D1/00Investigation of foundation soil in situ

Abstract

The invention discloses a kind of static sounding probes, belong to ocean static sounding device technical field, and seawater pressure, which is affected to load cell range, when to solve the problems, such as existing probe test designs.Static sounding probe provided by the invention includes outer housing, the mandrel in outer housing, the sensor for pore water pressure mounting base being connect with mandrel lower end and the static point resistance test suite being set on mandrel, wherein, the first sealing ring is arranged on mandrel, for the sealing between mandrel and outer housing;The second sealing ring is arranged in sensor for pore water pressure mounting base, for the sealing between sensor for pore water pressure mounting base and outer housing;Mandrel is equal to sensor for pore water pressure mounting base in the outer diameter being arranged at the second sealing ring in the outer diameter being arranged at the first sealing ring.The present invention static sounding probe test static point resistance when load cell range with it is sea water advanced unrelated, the range of load cell can be reduced and improve cone measuring accuracy.

Description

A kind of static sounding probe
Technical field
The present invention relates to ocean static sounding device technical fields, and in particular to a kind of static sounding probe.
Background technology
The basic principle of static sounding is with quasi- static(al) (for opposite dynamic sounding, without or seldom impact load) by one A inside equipped with sensor contact probe to be at the uniform velocity pressed into soil, due to the soft or hard difference of various soil in stratum, pop one's head in suffered by Resistance is also different, and this penetration resistance of different sizes is input to by electric signal in recording apparatus and is recorded by sensor, Again by the qualitative relationships and statistical correlation relationship between penetration resistance and the Engineering Geologic Characteristics of soil, to realize that obtaining soil layer cuts open Face such as provides shallow ground bearing capacity, selects bearing course at pile end and estimate bearing capacity of single pile at the engineering geological investigations purpose.Static sounding is A kind of in-situ testing method and a kind of exploration means, it is compared with prospecting schedules such as conventional probing-sampling-laboratory tests, Have many advantages, such as quick, accurate, economical and saves manpower.
Ocean static sounding probe is the essential component of ocean cone penetration test, for testing deposit inner cone Sharp resistance, side friction and pore water pressure etc..Currently, the cone of static sounding probe tests soil by single-ended force way With the total stress of water, it is continuously improved since seawater pressure increases with the depth of water, is often wanted using the range of the probe of this structure Consider the influence of water pressure.When the depth of water is more than 1000m, the range of probe need it is more much higher than actual test soil strength, from And the resolution ratio of probe is caused to reduce;For deep-sea shallow sediment, strength range within the scope of 10kpa-200kpa, but by Larger in the depth of water, probe range will reach megapascal grade.
Therefore, the present invention can eliminate static sounding probe that seawater pressure influences testing range to solve there is an urgent need for a kind of Above-mentioned problem.
Invention content
The range of load cell and sea water advanced nothing when it is an object of the invention to propose a kind of test static point resistance The static sounding probe of pass.
Another object of the present invention is a kind of range that can reduce load cell of proposition and improves cone test essence The static sounding probe of degree.
For this purpose, the present invention uses following technical scheme:
A kind of static sounding probe, including outer housing, the mandrel in the outer housing, connect with the mandrel lower end Sensor for pore water pressure mounting base and the static point resistance test suite that is set on the mandrel, wherein be arranged on the mandrel There is the first sealing ring, for the sealing between the mandrel and the outer housing;It is arranged in the sensor for pore water pressure mounting base Second sealing ring, for the sealing between the sensor for pore water pressure mounting base and the outer housing;The mandrel is described in being arranged Outer diameter at first sealing ring is equal to the sensor for pore water pressure mounting base in the outer diameter being arranged at second sealing ring.
As a preferred solution of the present invention, the static point resistance test suite includes the survey being set on the mandrel Power covers and is fixed on the upper load cell of dynamometry set.
As a preferred solution of the present invention, the outer housing is connected through a screw thread by connector and sleeve and is formed, institute The one end for stating sleeve extends outward to form cone.
As a preferred solution of the present invention, it is fixed with sensor for pore water pressure in the sensor for pore water pressure mounting base, be used for Measure pore water pressure.
As a preferred solution of the present invention, hole is offered in the sensor for pore water pressure mounting base, the hole can make sea Water enters the sensor for pore water pressure.
As a preferred solution of the present invention, the sleeve is equipped with permeable stone in the one end for being formed with the cone.
Further, further include underwater electrical connector, the mandrel is connected with the pore pressure in one end towards the cone Sensor installation seat, the other end are connected with the underwater electrical connector.
As a preferred solution of the present invention, the mandrel and the sensor for pore water pressure mounting base form force-transmitting pole, institute Force-transmitting pole is stated to be an integral structure.
As a preferred solution of the present invention, it is arranged with third sealing ring on the connector, is used for the connector and institute State the sealing between sleeve.
As a preferred solution of the present invention, the data line of the load cell and the sensor for pore water pressure respectively with The underwater electrical connector connection.
Beneficial effects of the present invention are:
The static sounding probe of the present invention includes outer housing, the mandrel in outer housing, the hole being connect with mandrel lower end Pressure sensor mounting base and the static point resistance test suite being set on mandrel are arranged with the first sealing ring, pore pressure on mandrel The second sealing ring is arranged on sensor installation seat, mandrel is installed in the outer diameter being arranged at the first sealing ring equal to sensor for pore water pressure Seat is in the outer diameter being arranged at the second sealing ring;Mandrel and sensor for pore water pressure mounting base form the force-transmitting pole of integral structure, power transmission It is logical with external sea water phase at the underwater electrical connector of top end, the seawater pressure of formation can offset force-transmitting pole bottom end cone tip part it is suffered to On seawater pressure, differential pressure force value inside and outside the probe caused by deep sea hydraulic can be completely eliminated, thus, the static sounding probe Test static point resistance when load cell range with it is sea water advanced unrelated, the range of load cell can be reduced and improve cone Sharp measuring accuracy.
Description of the drawings
Fig. 1 is the sectional view for the static sounding probe that the preferred embodiment of the present invention provides.
In figure label for:
1, mandrel;2, sensor for pore water pressure mounting base;3, sensor for pore water pressure;4, dynamometry set;5, load cell;6, connector; 7, sleeve;8, cone;9, permeable stone;10, underwater electrical connector;11, the first sealing ring;12, the second sealing ring;13, third seals Circle;14, the 4th sealing ring.
Specific implementation mode
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
Preferred embodiment:
This preferred embodiment discloses a kind of static sounding probe.As shown in Figure 1, static sounding probe includes by 6 He of connector Sleeve 7 be connected through a screw thread and formed outer housing, the mandrel 1 in outer housing, connect with mandrel 1 sensor for pore water pressure peace Dress seat 2, the sensor for pore water pressure 3 being fixed in sensor for pore water pressure mounting base 2, the static point resistance test suite being set on mandrel 1 And it is fixed on the underwater electrical connector 10 of 1 upper end of mandrel.The screw thread entirely through connector top of static sounding probe and measurement Feeler lever connects, and measurement feeler lever need to offer hole, makes to lead to external sea water phase at underwater electrical connector 10 inside probe, offsets interior heterodyne Pressure.Static sounding probe is mainly used for accurately testing static point resistance and pore water pressure.
Static point resistance test suite includes the dynamometry set 4 being set on mandrel 1 and the force-measuring sensing being fixed on dynamometry set 4 Device 5, and dynamometry set 4 is connect by screw thread with connector 6.
Hole is offered among sensor for pore water pressure mounting base 2, hole can make seawater enter sensor for pore water pressure 3, and sensor for pore water pressure 3 is used In measurement pore water pressure.
The one end of sleeve 7 extends outward to form cone 8, and sleeve 7 is equipped with permeable stone 9 in the one end for being formed with cone 8, Seawater can enter sensor for pore water pressure 3 by permeable stone 9.
Mandrel 1 and sensor for pore water pressure mounting base 2 form force-transmitting pole, and force-transmitting pole is an integral structure, and mandrel 1 is towards cone 8 one end is connected with sensor for pore water pressure mounting base 2, and the other end is connected with underwater electrical connector 10.Load cell 5 and pore pressure sensing The data line of device 3 is connect with underwater electrical connector 10 respectively.
The first sealing ring 11 is arranged on mandrel 1, for the sealing between mandrel 1 and connector 6;Sensor for pore water pressure mounting base The second sealing ring 12 is arranged on 2, for the sealing between sleeve 7 and sensor for pore water pressure mounting base 2;Mandrel 1 is being arranged first Outer diameter at sealing ring 11 is equal to sensor for pore water pressure mounting base 2 in the outer diameter being arranged at the second sealing ring 12.
Third sealing ring 13 is arranged on connector 6, for the sealing between connector 6 and sleeve 7;Sensor for pore water pressure mounting base 2 are connect by screw thread with sensor for pore water pressure 3, and the 4th sealing ring 14 is also arranged in sensor for pore water pressure mounting base 2.
The installation position of first sealing ring 11 and third sealing ring 13 is above the position of static point resistance test suite.
First sealing ring 11, the second sealing ring 12 and third sealing ring 13 are both preferably O-ring seal.
The static sounding probe of the present embodiment is described as follows when testing static point resistance:
In the seawater, the screw thread entirely through 6 top of connector of static sounding probe is connect with feeler lever is measured, and measures feeler lever Hole is offered, seawater through hole enters at probe inside underwater electrical connector 10, directly acts on power transmission column section, wherein power transmission Column includes mandrel 1 and sensor for pore water pressure mounting base 2, is an integral structure.Due to mandrel 1 be arranged it is outer at the first sealing ring 11 Diameter is equal to sensor for pore water pressure mounting base 2 in the outer diameter being arranged at the second sealing ring 12, thus, the forced area phase popped one's head at two Together, mandrel 1 and force-transmitting pole that pore water pressure mounting base 2 is formed are by the opposite seawater pressure of the size same direction, the pressure Force-transmitting pole inside can be only deformed without forming poor stress, dynamometry is not affected by external force influence at this time.But when cone 8 When contacting deposit, biography column lower part increases because of the resistance of deposit, and upper pressure is then not affected by influence, at this time force-transmitting pole The pressure being subject to not rebalancing, forms the pressure difference generated by deposit resistance, causes differential pressure passing to dynamometry set 4, the measurement of static point resistance is carried out by load cell 5, that is, realize the measurement of deposit penetration resistance.
By above description it is found that static sounding probe test static point resistance when load cell range with it is sea water advanced It is unrelated, the range of load cell can be reduced and improve cone measuring accuracy.
The static sounding probe of the present embodiment is described as follows when testing pore water pressure:
Seawater enters sensor for pore water pressure 3, through hole by the hole opened up among permeable stone 9 and sensor for pore water pressure mounting base 2 Pressure sensor 3 completes pressure measurement.The pore water pressure of static sounding probe test is more accurate, faster.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning Covering non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only that A little elements, but also include other elements that are not explicitly listed, or further include for this process, method, article or The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged Except there is also other identical elements in the process, method, article or apparatus that includes the element.
It is the embodiment provided in conjunction with attached drawing above, is only to realize preferred embodiment of the invention rather than its limitations, it is any It modifies to the specific implementation mode of the present invention or equivalent replacement is carried out to some technical characteristics, without departing from skill of the present invention The spirit of art scheme should all cover within the scope of the technical scheme claimed by the invention.Protection scope of the present invention is also wrapped It includes those skilled in the art and does not make the creative labor the thinkable any alternate embodiments of institute.

Claims (5)

1. a kind of static sounding probe, which is characterized in that mandrel (1) including outer housing, in the outer housing, with it is described The sensor for pore water pressure mounting base (2) of mandrel (1) lower end connection and the static point resistance test group being set on the mandrel (1) Part, wherein
It is arranged with the first sealing ring (11) on the mandrel (1), for the sealing between the mandrel (1) and the outer housing; It is arranged with the second sealing ring (12) on the sensor for pore water pressure mounting base (2), is used for the sensor for pore water pressure mounting base (2) and institute State the sealing between outer housing;
The mandrel (1) exists in the outer diameter being arranged at first sealing ring (11) equal to the sensor for pore water pressure mounting base (2) The outer diameter being arranged at second sealing ring (12);
The static point resistance test suite includes the dynamometry set (4) being set on the mandrel (1) and is fixed on the dynamometry set (4) load cell (5) on;
The outer housing is connected through a screw thread by connector (6) and sleeve (7) and is formed, and the one end of the sleeve (7) is to extension It stretches to form cone (8);
It is fixed with sensor for pore water pressure (3) on the sensor for pore water pressure mounting base (2), for measuring pore water pressure;
Hole is offered on the sensor for pore water pressure mounting base (2), the hole can make seawater enter the sensor for pore water pressure (3);
The sleeve (7) is equipped with permeable stone (9) in the one end for being formed with the cone (8).
2. a kind of static sounding probe according to claim 1, which is characterized in that further include underwater electrical connector (10), institute It states mandrel (1) and is connected with the sensor for pore water pressure mounting base (2) in one end towards the cone (8), the other end connects State underwater electrical connector (10).
3. a kind of static sounding probe according to claim 1 or 2, which is characterized in that the mandrel (1) and the pore pressure Sensor installation seat (2) forms force-transmitting pole, and the force-transmitting pole is an integral structure.
4. a kind of static sounding probe according to claim 1 or 2, which is characterized in that be arranged on the connector (6) Three sealing rings (13), for the sealing between the connector (6) and the sleeve (7).
5. a kind of static sounding probe according to claim 2, which is characterized in that the load cell (5) and described The data line of sensor for pore water pressure (3) is connect with the underwater electrical connector (10) respectively.
CN201611092442.9A 2016-12-01 2016-12-01 A kind of static sounding probe Active CN106480870B (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109541180A (en) * 2018-12-06 2019-03-29 青岛海洋地质研究所 A kind of dedicated static sounding probe of hydrate reservoir
WO2020217113A1 (en) * 2019-04-26 2020-10-29 King Abdullah University Of Science And Technology Hydrostatically compensated device for ground penetration resistance measurements

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CN107153038B (en) * 2017-06-08 2021-05-07 铁道第三勘察设计院集团有限公司 Rapid formation permeability coefficient measuring probe and using method thereof
CN108330941B (en) * 2018-01-29 2020-03-13 中国海洋大学 Pressure compensation type sounding probe and ocean static sounding equipment
CN110607790B (en) * 2019-10-23 2021-12-10 中国海洋大学 Deep sea static sounding probe
CN110735428B (en) * 2019-10-23 2021-11-12 中国海洋大学 Deep sea spherical sounding probe
CN110765628A (en) * 2019-10-30 2020-02-07 中国海洋大学 Indoor penetration multipurpose test system and method
CN112301994B (en) * 2020-09-18 2022-03-29 广州中勘工程科技有限公司 Multi-parameter static sounding probe calibration device and method
CN114874025A (en) * 2022-03-28 2022-08-09 广州德百顺蓝钻科技有限公司 Diamond water filtering ring and preparation method thereof
CN115790939B (en) * 2022-12-12 2024-04-23 中南大学 Measuring rod for measuring penetration resistance of deep sea bottom sediment
CN116873170B (en) * 2023-09-08 2023-11-28 山东科技大学 Portable submarine hydrate exploration static sounding aircraft

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JP2010071672A (en) * 2008-09-16 2010-04-02 Shimizu Corp Device for measuring hydraulic pressure of groundwater
CN102174808B (en) * 2011-02-24 2012-12-19 中国地质大学(武汉) Piezocone penetration test (CPTU) prober of dual-deformed column
CN202543881U (en) * 2012-04-28 2012-11-21 铁道第三勘察设计院集团有限公司 Sealing structure of static sounding electrical measuring probe
CN206428688U (en) * 2016-12-01 2017-08-22 中国海洋大学 A kind of static sounding probe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109541180A (en) * 2018-12-06 2019-03-29 青岛海洋地质研究所 A kind of dedicated static sounding probe of hydrate reservoir
WO2020217113A1 (en) * 2019-04-26 2020-10-29 King Abdullah University Of Science And Technology Hydrostatically compensated device for ground penetration resistance measurements

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