CN201429486Y - Probe type soil body pore space water pressure measuring meter - Google Patents
Probe type soil body pore space water pressure measuring meter Download PDFInfo
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- CN201429486Y CN201429486Y CN2009200290225U CN200920029022U CN201429486Y CN 201429486 Y CN201429486 Y CN 201429486Y CN 2009200290225 U CN2009200290225 U CN 2009200290225U CN 200920029022 U CN200920029022 U CN 200920029022U CN 201429486 Y CN201429486 Y CN 201429486Y
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- water pressure
- soil body
- probe
- pore water
- measuring staff
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Abstract
The utility model provides a probe type soil body pore space water pressure measuring meter, which belongs to the field of geotechnical tests, and comprises a probe type metal measuring rod, a conicalprobe head, a water inlet, a pore space water pressure sensor and a water injection catheter. The utility model uses the characteristic that the metal measuring rod can be directly inserted into soilsamples, and the pore space water pressure of different depths and different positions of the soil samples in the geotechnical ring shear tests can be accurately measured through the pore space waterpressure sensor arranged at the upper part of the metal measuring rod. The utility model has the advantages of simple structure, convenient installation and use, high economical efficiency and high applicability, and has important research and application values.
Description
Affiliated technical field
The utility model relates to a kind of probe-type soil body pore water pressure force measuring device, in particular for measuring the pore water pressure at soil sample different depth and different parts place in the ground ring shear test process, belongs to Geotechnical Engineering test field.
Background technology
China suffers one of the most serious country of landslide disaster in the world.These landslide disaster generation quantity are many, frequency is high, produce geologic condition and origin mechanism complexity, to local people's production, life and every engineering construction produced direct threat smoothly, seriously hindered China's implementation of sustainable development.
In the middle of research, be one of current critical problem that presses for solution at the research of the mechanical property of the weak slip band place soil that underlies to the landslide phenomenon.By the mechanical property of experimental study soil in shear history is the link of tool control Significance in the middle of the landslide research.Wherein, ring shear apparatus is research soil distortion and the most effective means of Strength Changes characteristic in shear history.The design feature of ring shear apparatus be make soil sample along up and down separately independently the default face at ring-type shear box middle part shear, by the variation of distortion, Strength Changes and the pore water pressure of the soil body in the various sensing equipments monitoring shear histories.At present, monitoring for ring shear test process mesoporosity water pressure mainly is in the shear box inboard near the shear surface place annular permeable stone to be set, and it is linked to each other with the pore water pressure sensor that is arranged on the shear box outside, the pore water pressure value that pore water pressure sensor is monitored is converted to electric signal and is transferred to recording unit at last.This monitoring pore water pressure method can be monitored the pore water pressure of the soil body at the shear surface place.But there is weak point in this monitoring method, comprising: 1. processing technology complexity, and it need be at the inboard fluting of shear box, and buries annular permeable stone underground, causes test parts production cost height; 2. near the pore water pressure of other position inside soil body it can't measure shear surface, therefore can't reflect motion of inside soil body pore water and situation of change in the process of the test, cause to objectively respond actual conditions, even cause deviation and mistake based on the analysis of test findings.
Summary of the invention
Can't measure the deficiency of inside soil body different parts and degree of depth pore water pressure in order to overcome existing ring shear apparatus, the utility model provides a kind of probe-type soil body pore water pressure meter.This probe-type soil body pore water pressure meter not only simple and convenient processing method, produce low but also the accurate situation of change of soil body different parts and degree of depth place pore water pressure in the measurement ring scissor test process.
The technical scheme that its technical matters that solves the utility model adopts is: probe-type soil body pore water pressure meter comprises probe-type metal measuring staff, conical probe, inlet opening, pore water pressure sensor and water filling conduit.Wherein, probe-type metal measuring staff is a hollow metal mini diameter tube, and the one end is tapered, in the middle of probe insertion soil sample.On the measuring staff body of rod scale is set, is used for measuring the degree of depth that measuring staff inserts soil sample.The water in the soil sample near the conical probe place several circular inlet openings is set at the metal measuring staff, so that can be communicated with the water in the measuring staff.Soil particle stops up the inlet opening in order to prevent to test, and ties up parcel one deck filter cloth outside the inlet opening, simultaneously filter cloth outer parcel fine metal mesh and with measuring staff body of rod firm welding.The feeler lever upper end links to each other with pore water pressure sensor, is used to measure pore water pressure.Pore water pressure sensor links to each other with data recorder by lead.Open a water injection hole and link to each other in the feeler lever upper side with the water filling conduit, when being used for testing to the measuring staff water filling.
The design's structure utilizes the metal measuring staff can directly insert the central characteristics of soil sample, by the water in the middle of the measuring staff is communicated with water in the soil sample, and then the pore water pressure in the soil conducted to the pore water pressure sensor on metal measuring staff top, reach the purpose of measuring soil sample internal void water pressure.Simultaneously, can accurately measure measuring staff and insert the degree of depth in the soil body by reading scale on the metal measuring staff, and then judge the pore water pressure at soil sample different depth place.In addition, by a plurality of meters being set, can reach the purpose of the pore water in the soil sample being carried out stereoscopic monitoring at the soil sample different parts.
This probe-type soil body pore water pressure meter, simple in structure, easy to process, measurement effect is good.For the precision that improves ring shear test and reflect that truly soil body mesoporosity water pressure changes and motion has remarkable result, has crucial meaning for the effect of water in the native shear history of research.
Description of drawings
Fig. 1 probe-type soil body pore water pressure meter synoptic diagram
Fig. 2 probe-type soil body pore water pressure meter is implemented illustration
1. metal measuring staffs among the figure, 2. pore water pressure sensor, 3. lead, 4. data recording equipment, 5. water filling conduit, 6. Closing Switch, 7. conical probe, 8. inlet opening, 9. filter cloth, 10. wire gauze, 11. scales.
Embodiment
In Fig. 1, probe-type metal measuring staff (1) upper end links to each other with pore water pressure sensor (2), and pore water pressure sensor then is connected by lead (3) transmission signals and with data recording equipment (4).Metal measuring staff (1) top is located to be connected with water filling conduit (5) near pore water pressure sensor (2), and Closing Switch (6) is set on the conduit.Probe-type metal measuring staff (1) lower end is provided with conical probe (7), is used for making metal measuring staff (1) to insert soil sample.Metal measuring staff (1) lower end is provided with inlet opening (8), is used to be communicated with the inside and outside water of metal measuring staff (1).The outside, inlet opening (8) parcel filter cloth (9) and wire gauze (10)
In example shown in Figure 2, at first metal measuring staff (1) is linked to each other with pore water pressure sensor (2), open water filling conduit (5) to metal measuring staff (1) intracontour waterflooding, be full of water until metal measuring staff (1) inner chamber, close water filling switch (6) then.In the middle of metal measuring staff (1) inserted soil sample from the shear box upper vertical.By contacting of conical probe (7) and soil sample, whether perception metal measuring staff (1) inserts in the soil, and reads insertion depth by the scale (11) on metal measuring staff (1) side.According to the different depth that inserts soil sample, measure corresponding pore water pressure.Also can adopt the method that a plurality of probe-type soil body pore water pressure meters are set in soil sample, measure the pore water pressure situation of change of soil sample different parts.
The utility model is simple in structure, and is easy to install, and economy and applicability are all good, has important research using value.
Claims (6)
1. probe-type soil body pore water pressure meter is characterized in that the situation of change by probe-type metal measuring staff, conical probe, inlet opening, pore water pressure sensor and water filling conduit measurement soil body different parts and degree of depth place pore water pressure.
2. according to the described probe-type soil body of claim 1 pore water pressure meter, it is characterized in that probe-type metal measuring staff is a hollow metal mini diameter tube, the one end is tapered.
3. according to the described probe-type soil body of claim 1 pore water pressure meter, it is characterized in that on the measuring staff body of rod scale being set, be used for measuring the degree of depth that measuring staff inserts soil sample.
4. according to the described probe-type soil body of claim 1 pore water pressure meter, it is characterized in that near the conical probe place several circular inlet openings being set, so that the water in the soil sample can be communicated with the water in the measuring staff at the metal measuring staff.
5. according to the described probe-type soil body of claim 1 pore water pressure meter, it is characterized in that outside the inlet opening, tying up parcel one deck filter cloth, simultaneously at the outer parcel of filter cloth fine metal mesh.
6. according to the described probe-type soil body of claim 1 pore water pressure meter, it is characterized in that the feeler lever upper side leaves a water injection hole and link to each other with the water filling conduit, when being used for testing to the measuring staff water filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200290225U CN201429486Y (en) | 2009-07-06 | 2009-07-06 | Probe type soil body pore space water pressure measuring meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200290225U CN201429486Y (en) | 2009-07-06 | 2009-07-06 | Probe type soil body pore space water pressure measuring meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201429486Y true CN201429486Y (en) | 2010-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200290225U Expired - Fee Related CN201429486Y (en) | 2009-07-06 | 2009-07-06 | Probe type soil body pore space water pressure measuring meter |
Country Status (1)
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| CN (1) | CN201429486Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435176A (en) * | 2011-11-14 | 2012-05-02 | 上海交通大学 | Device and method for measuring response to fluctuating pressure of wind generated wave lakebed of shallow lake |
| CN102564676A (en) * | 2012-02-12 | 2012-07-11 | 吉林大学 | Penetrating-stretching type pore water pressure measurement device and measurement method thereof |
| CN102636631A (en) * | 2012-04-19 | 2012-08-15 | 兰州大学 | Test device and method for judging soil layer collapsibility |
| CN102900063A (en) * | 2012-10-30 | 2013-01-30 | 东南大学 | Dynamic pore-pressure static sounding probe for detecting sludge |
| CN103512699A (en) * | 2012-06-21 | 2014-01-15 | 中国科学院寒区旱区环境与工程研究所 | Device for measuring pore water pressure in frozen soil |
| CN104422555A (en) * | 2013-08-23 | 2015-03-18 | 青岛理工大学 | Probe type soil body pore space water pressure measuring meter |
| CN106759221A (en) * | 2016-12-27 | 2017-05-31 | 河海大学 | Erecting device and method based on the pore pressure of the rock mass underground space |
| CN117647443A (en) * | 2024-01-19 | 2024-03-05 | 中国电建集团西北勘测设计研究院有限公司 | Loess hole inner collapse coefficient testing device and method |
-
2009
- 2009-07-06 CN CN2009200290225U patent/CN201429486Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435176A (en) * | 2011-11-14 | 2012-05-02 | 上海交通大学 | Device and method for measuring response to fluctuating pressure of wind generated wave lakebed of shallow lake |
| CN102435176B (en) * | 2011-11-14 | 2013-06-19 | 上海交通大学 | Device and method for measuring response to fluctuating pressure of wind generated wave lakebed of shallow lake |
| CN102564676B (en) * | 2012-02-12 | 2014-08-13 | 吉林大学 | Penetrating-stretching type pore water pressure measurement device and measurement method thereof |
| CN102564676A (en) * | 2012-02-12 | 2012-07-11 | 吉林大学 | Penetrating-stretching type pore water pressure measurement device and measurement method thereof |
| CN102636631A (en) * | 2012-04-19 | 2012-08-15 | 兰州大学 | Test device and method for judging soil layer collapsibility |
| CN103512699A (en) * | 2012-06-21 | 2014-01-15 | 中国科学院寒区旱区环境与工程研究所 | Device for measuring pore water pressure in frozen soil |
| CN102900063A (en) * | 2012-10-30 | 2013-01-30 | 东南大学 | Dynamic pore-pressure static sounding probe for detecting sludge |
| CN102900063B (en) * | 2012-10-30 | 2014-12-17 | 东南大学 | Dynamic pore-pressure static sounding probe for detecting sludge |
| CN104422555A (en) * | 2013-08-23 | 2015-03-18 | 青岛理工大学 | Probe type soil body pore space water pressure measuring meter |
| CN106759221A (en) * | 2016-12-27 | 2017-05-31 | 河海大学 | Erecting device and method based on the pore pressure of the rock mass underground space |
| CN106759221B (en) * | 2016-12-27 | 2019-01-11 | 河海大学 | Mounting device and method based on the pore pressure of the rock mass underground space |
| CN117647443A (en) * | 2024-01-19 | 2024-03-05 | 中国电建集团西北勘测设计研究院有限公司 | Loess hole inner collapse coefficient testing device and method |
| CN117647443B (en) * | 2024-01-19 | 2024-04-12 | 中国电建集团西北勘测设计研究院有限公司 | Loess hole inner collapse coefficient testing device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20100706 |