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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- 238000011065 in-situ storage Methods 0.000 title claims abstract description 6
- 239000011148 porous material Substances 0.000 claims abstract description 27
- 239000002689 soil Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000012806 monitoring device Methods 0.000 claims abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
波浪作用下土体原位孔压和影响深度监测装置，有套筒与前端部的锥尖阻力传感器、侧摩阻力传感器及其位置后的孔隙水压力传感器组成的测杆和相应的数据采集装置，其特征是它包括设置在接头上，并以接头连接两端的套筒而布设在长测杆上的多个孔隙水压力传感器，在接头上还安装一只电阻率传感器。由此构筑的本发明不仅能监测波浪作用下不同深度土体内孔压变化，还能监测不同大小波浪的影响深度，以便分析土体稳定性。同时利用电阻率传感器测试不同深度土体的电阻率，以便分析土壤对海底管线等工程设施的腐蚀程度，为其埋置深度的确定提供科学依据。
Under the action of waves, the in-situ pore pressure and impact depth monitoring device of the soil has a measuring rod composed of a sleeve, a cone tip resistance sensor at the front end, a side friction resistance sensor and a pore water pressure sensor behind its position, and a corresponding data acquisition device. The utility model is characterized in that it includes a plurality of pore water pressure sensors arranged on the joint and arranged on the long measuring rod by connecting sleeves at both ends with the joint, and a resistivity sensor is also installed on the joint. The invention thus constructed can not only monitor the variation of pore pressure in soil at different depths under the action of waves, but also monitor the impact depth of waves of different sizes, so as to analyze the stability of the soil. At the same time, the resistivity sensor is used to test the resistivity of soil at different depths, so as to analyze the corrosion degree of soil to submarine pipelines and other engineering facilities, and provide a scientific basis for the determination of its embedding depth.
Description
技术领域technical field
本发明涉及水底土体的物理力学性质的测量装置，具体地说是波浪作用下土体原位孔压和影响深度监测装置。The invention relates to a measuring device for the physical and mechanical properties of underwater soil, in particular to a monitoring device for in-situ pore pressure and impact depth of soil under the action of waves.
背景技术Background technique
波浪周期性荷载作用，在土体中产生超孔隙水压力(简称孔压)，但累积孔压超过土体上覆有效应力，土体就会发生失稳，就会产生地质灾害现象，对海上工程正常施工和运行造成危害。已有的静力触探和孔隙水压力计设备，广泛应用于海上土质分类、分层和坝体的孔压监测，但对于海底土仅限于表层孔压观测，而不能分层观测，因此也无法检测不同大小波浪的影响深度；另外，也缺少现场土体电阻率参数的测定，该参数是确定土壤腐蚀性的一个重要指标，与海底工程构筑物(如海底管线)的工作寿命密切相关。Wave periodic loads generate excess pore water pressure (referred to as pore pressure) in the soil, but the cumulative pore pressure exceeds the effective stress on the soil, and the soil will become unstable and geological disasters will occur. Hazards caused by normal construction and operation of the project. The existing static penetrating sounding and pore water piezometer equipment are widely used in offshore soil classification, stratification and pore pressure monitoring of dams, but for seabed soil, it is only limited to surface pore pressure observation and cannot be layered. It is impossible to detect the impact depth of waves of different sizes; in addition, there is also a lack of on-site soil resistivity parameter determination, which is an important indicator for determining soil corrosion and is closely related to the working life of submarine engineering structures (such as submarine pipelines).
发明内容Contents of the invention
本发明的目的在于克服已有技术的不足，提供一种监测波浪在土体内不同深度处产生的超孔隙水压力的波浪作用下土体原位孔压和影响深度监测装置。The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a monitoring device for monitoring the in-situ pore pressure and impact depth of the soil under the action of waves to monitor the excess pore water pressure generated by waves at different depths in the soil.
本发明的另一目的是在监测土体内孔压的同时，还能监测不同大小的波浪的影响深度，同时测试不同深度土体的电阻率，以确定土壤对管道、构筑物基础的腐蚀性。Another object of the present invention is to monitor the impact depth of waves of different sizes while monitoring the pore pressure in the soil, and simultaneously test the resistivity of the soil at different depths to determine the corrosion of the soil to the foundation of pipelines and structures.
在已有技术的基础上，本装置包括由套筒、锥尖阻力传感器、侧摩阻力传感器和孔隙水压力传感器组成的测杆和相应的数据采集装置，其中锥尖阻力传感器和侧摩阻力传感器位于测杆的前端部，其特征是设置在接头上的多个孔隙水压力传感器，并以接头连接套筒而布设在长测杆上。在上述相应的每个接头上也布设了土体电阻率传感器，以便同时和现场测量土体的电阻率。On the basis of the existing technology, the device includes a measuring rod composed of a sleeve, a cone-point resistance sensor, a side friction resistance sensor and a pore water pressure sensor and a corresponding data acquisition device, wherein the cone-point resistance sensor and the side friction resistance sensor Located at the front end of the measuring rod, it is characterized by a plurality of pore water pressure sensors arranged on the joint, and is arranged on the long measuring rod by connecting the sleeve with the joint. A soil resistivity sensor is also arranged on each of the above corresponding joints so as to measure the resistivity of the soil simultaneously and on site.
附图说明Description of drawings
图1本发明的长测杆总体结构示意图Fig. 1 overall structure schematic diagram of long measuring rod of the present invention
图2本发明的多路信号数据装置电原理图Fig. 2 electrical schematic diagram of multi-channel signal data device of the present invention
具体实施方式Detailed ways
本发明有套筒6与前端部的锥尖阻力传感器1、侧摩阻力传感器2及其位置后的孔隙水压力传感器3组成的测杆和相应的数据采集装置，其特征是它还包括设置在接头5上，并以接头5连接套筒6而布设在长测杆上的多个孔隙水压力传感器3，这些主要以套筒长度相间布置的压力传感器3，不但能分层测量孔压，还可监测不同大小的波浪的影响深度。作为另一实施例，除了在接头5上安装一只孔隙水压力传感器3，也可安装一只电阻率传感器4，以便现场还可同时测量土体电阻率参数；考虑多路电缆的引出，在测杆顶端设有一带电缆孔8的端接头7，电缆孔8是多路信号电缆的出口。上述孔隙水压力传感器可采用带不锈钢隔离膜片的压阻式传感器等，以在技术上保证漂移小，精度高和进行快速动态测量。The present invention has sleeve 6 and the cone point resistance sensor 1 of front end portion, the side
如图2，多路数据采集装置以AT89C52单片微机为核心，分别处理来自多个孔隙水压力传感器3的多路转换器以及锥尖阻力传感器1，侧摩阻力传感器2和电阻率传感4的三路转换器，(若仅有前两者，则是二路转换器)分别对各路信号进行轮流切换，是仅将已有的少路数据采集装置改进为多路数据采集装置而简述。As shown in Figure 2, the multi-channel data acquisition device uses the AT89C52 single-chip microcomputer as the core to process multiplexers from multiple pore
由此构筑的本发明不仅能监测波浪作用下不同深度土体内孔压，还能监测不同大小波浪的影响深度，以及其土体电阻率。The invention constructed in this way can not only monitor the pore pressure in soil at different depths under the action of waves, but also monitor the impact depth of waves of different sizes and the resistivity of the soil.
Claims (2)
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 |
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| Publication Number | Publication Date |
|---|---|
| CN1532547A CN1532547A (en) | 2004-09-29 |
| CN1234012C true CN1234012C (en) | 2005-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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 |
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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 | On-site monitoring equipment for seabed soil liquefaction |
| 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 |
| CN109827702B (en) * | 2018-10-12 | 2024-08-16 | 上海港湾工程质量检测有限公司 | Pore water pressure gauge and pore water pressure testing 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 |
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- 2003-03-25 CN CN 03112050 patent/CN1234012C/en not_active Expired - Fee Related
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