CN1234012C - Detector for solibody in-situ hole pressure and affecting depth under wave action - Google Patents
Detector for solibody in-situ hole pressure and affecting depth under wave action Download PDFInfo
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- CN1234012C CN1234012C CN 03112050 CN03112050A CN1234012C CN 1234012 C CN1234012 C CN 1234012C CN 03112050 CN03112050 CN 03112050 CN 03112050 A CN03112050 A CN 03112050A CN 1234012 C CN1234012 C CN 1234012C
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- water pressure
- resistance sensor
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- soil
- hole
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- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The present invention relates to a monitor for the in situ hole pressure of soil bodies and influencing depth under the action of waves, which is provided with a measuring rod and a corresponding data acquisition device, wherein the measuring rod is composed of sleeve barrels, a conical tip resistance sensor, a side frictional resistance sensor and hole space water pressure sensors, the conical tip resistance sensor, the side frictional resistance sensor and the hole space water pressure sensors are arranged at the front end of the measuring rod, and the hole space water pressure sensors are arranged at the back of the side frictional resistance sensor. The present invention is characterized in that the present invention comprises the hole space water pressure sensors arranged on joints and are connected with the sleeve barrel at both ends through the joints to be distributed on the long measuring rod, and one resistivity sensors is also arranged on each joint. The formed the present invention can not only monitor the change of hole pressure in the soil bodies at different depths, but also can monitor the influencing depth of waves of different magnitude, which is convenient for analyzing the stability of the soil bodies. Simultaneously, the resistivity of the soil bodies at different depths is tested by the resistivity sensors, which is convenient for analyzing the corrosion degree to the engineering facilities of submarine pipelines, etc. caused by soil, and the present invention provides scientific bases for the determination of the embedment depth of the engineering facilities.
Description
Technical field
The present invention relates to the measurement mechanism of the physico-mechanical properties of the water-bed soil body, specifically the soil in-situ hole is pressed and is influenced depth monitor under the wave action.
Background technology
The wave period load action produce excess pore water pressure (being called for short the hole presses) in the soil body, but accumulation hole pressure is covered with efficacy above on the soil body, and unstability will take place the soil body, will produce the geologic hazard phenomenon, and marine engineering normal construction and operation are worked the mischief.Existing static sounding and pore pressure gauge equipment, monitoring is pressed in the hole that is widely used in marine soil property classification, layering and dam body, but only limit to the hole, top layer for seafloor soil and press observation, and can not layering observe, therefore also can't detect the degree of depth that influences of different big rips; In addition, also lack the mensuration of on-the-spot soil body resistance parameter, this parameter is to determine an important indicator of soil corrosivity, and is closely related with the mission life of seabed engineering structures (as subsea pipeline).
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide under a kind of wave action of monitoring the excess pore water pressure that wave different depth place in the soil body produces the soil in-situ hole to press and influence depth monitor.
Another object of the present invention is when monitoring soil body endoporus is pressed, can also monitor the degree of depth that influences of the big or small wave of difference, and the resistivity of testing the different depth soil body simultaneously is to determine the corrosivity of soil to pipeline, structure base.
On the basis of prior art, this device comprises measuring staff and the corresponding data acquisition device of being made up of sleeve, static point resistance sensor, side friction sensor and pore water pressure sensor, wherein static point resistance sensor and side friction sensor are positioned at the leading section of measuring staff, it is characterized in that being arranged on a plurality of pore water pressure sensors on the joint, and be laid on the long measuring staff with the joint coupling sleeve.On above-mentioned corresponding each joint, also laid soil body resistivity sensor, so that the resistivity of the while and the in-site measurement soil body.
Description of drawings
Fig. 1 long measuring staff general structure synoptic diagram of the present invention
Fig. 2 multiple signals data set of the present invention electrical schematic diagram
Embodiment
Measuring staff and corresponding data acquisition device that the pore water pressure sensor 3 of the present invention after by static point resistance sensor 1, side friction sensor 2 and the position thereof of sleeve 6 and leading section formed, it is characterized in that it also comprises is arranged on the joint 5, and be laid in a plurality of pore water pressure sensors 3 on the long measuring staff with joint 5 coupling sleeves 6, these are mainly with the pressure transducer 3 of the alternate layout of length sleeve, not only can press by the layering measured hole, also can monitor the degree of depth that influences of the big or small wave of difference.As another embodiment,, a resistivity sensor 4 also can be installed, on joint 5 so that soil body resistance parameter also can be measured simultaneously in the scene except a pore water pressure sensor 3 is installed; Consider drawing of multiway cable, be provided with the end connector 7 in a tape cable hole 8 on the measuring staff top, cable aperture 8 is outlets of multiple signals cable.Above-mentioned pore water pressure sensor can adopt the piezoresistive transducer of band stainless steel isolation diaphragm etc., and guaranteeing that technically drift is little, precision is high and carry out quick kinetic measurement.
As Fig. 2, multi-path data collecting device is a core with the AT89C52 single chip microcomputer, handle traffic pilot and static point resistance sensor 1 respectively from a plurality of pore water pressure sensors 3, three road converters of side friction sensor 2 and resistivity sensing 4, (if the above two are only arranged, then be two road converters) respectively each road signal is taken turns to switch, be only existing circuit-switched data harvester less to be improved to multi-path data collecting device and to sketch.
The present invention who constructs thus can not only monitor under the wave action different depth soil body endoporus and press, and can also monitor the degree of depth that influences of different big rips, with and soil body resistivity.
Claims (2)
- The soil in-situ hole is pressed and is influenced depth monitor under 1 wave action, comprise measuring staff and the corresponding data acquisition device formed by sleeve (6), static point resistance sensor (1), side friction sensor (2) and pore water pressure sensor (3), wherein static point resistance sensor (1) and side friction sensor (2) are positioned at the leading section of measuring staff, it is characterized in that being arranged on a plurality of pore water pressure sensors (3) on the joint (5), be laid on the long measuring staff with joint (5) coupling sleeve (6).
- The soil in-situ hole is pressed and is influenced depth monitor under 2 wave actions as claimed in claim 1, it is characterized in that also installing on each joint (5) resistivity sensor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03112050 CN1234012C (en) | 2003-03-25 | 2003-03-25 | Detector for solibody in-situ hole pressure and affecting depth under wave action |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03112050 CN1234012C (en) | 2003-03-25 | 2003-03-25 | Detector for solibody in-situ hole pressure and affecting depth under wave action |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1532547A CN1532547A (en) | 2004-09-29 |
| CN1234012C true CN1234012C (en) | 2005-12-28 |
Family
ID=34283604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03112050 Expired - Fee Related CN1234012C (en) | 2003-03-25 | 2003-03-25 | Detector for solibody in-situ hole pressure and affecting depth under wave action |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1234012C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1790017B (en) * | 2005-12-12 | 2011-10-12 | 国家海洋局第一海洋研究所 | Multifunctional multi-channel detection rod for monitoring pore water pressure of seabed soil |
| CN100516872C (en) * | 2005-12-12 | 2009-07-22 | 中国石化集团胜利石油管理局钻井工艺研究院 | In-situ monitoring device for liquefaction of seabed soil |
| CN102680168B (en) * | 2012-06-13 | 2013-11-06 | 水利部交通运输部国家能源局南京水利科学研究院 | Method for recording pore water pressure mutation process during disaster and monitoring device thereof |
| CN103174122B (en) * | 2012-08-27 | 2015-07-15 | 东南大学 | Lateral stress pore pressure probe used for testing soil static lateral pressure coefficient |
| CN103088850B (en) * | 2013-01-17 | 2014-09-10 | 东南大学 | Cycle friction sleeve barrel device for evaluating periodic load pile side friction |
| CN103233453B (en) * | 2013-04-18 | 2015-08-19 | 天津大学 | A kind of original position soil body surveying method |
| CN104880973A (en) * | 2015-06-08 | 2015-09-02 | 成都欧迅海洋工程装备科技有限公司 | Intelligent operation control system of in-situ pore water collection column |
| CN105424760A (en) * | 2015-11-23 | 2016-03-23 | 西南林业大学 | Calibration method for soil resistivity and soil water content of rocky mountainous area |
| CN106223305B (en) * | 2016-07-28 | 2018-03-20 | 东南大学 | A kind of automatic dynamic driving instrument for considering energy correction and dynamic response |
| CN109827702A (en) * | 2018-10-12 | 2019-05-31 | 上海港湾工程质量检测有限公司 | Pore pressure gauge and pore water pressure force test device |
| CN114235247B (en) * | 2021-11-19 | 2024-04-09 | 温州大学 | Amphibious soil body physical and mechanical parameter acquisition fixing equipment with different depths and use method thereof |
-
2003
- 2003-03-25 CN CN 03112050 patent/CN1234012C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1532547A (en) | 2004-09-29 |
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