GB1189421A - Measurement of Ground Slippage - Google Patents
Measurement of Ground SlippageInfo
- Publication number
- GB1189421A GB1189421A GB550168A GB550168A GB1189421A GB 1189421 A GB1189421 A GB 1189421A GB 550168 A GB550168 A GB 550168A GB 550168 A GB550168 A GB 550168A GB 1189421 A GB1189421 A GB 1189421A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rod
- bore
- measuring
- layer
- tiltmeter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005259 measurement Methods 0.000 title 1
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 239000003792 electrolyte Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
- E21F17/185—Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Food Science & Technology (AREA)
- Remote Sensing (AREA)
- Medicinal Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
1,189,421. Measuring ground slippage. SOIL MECHANICS (EQUIPMENT) Ltd. Jan. 24, 1969 [Feb. 2, 1968], No. 5501/68. Headings G1N and G1S. A method of measuring the movement of an upper layer 2 of ground which may be subject to slipping over a lower layer 3 comprises placing a bendable rod 7 so that it extends downwards through the upper layer and has its lower end firmly fixed with respect to the lower layer and measuring the angular deflection of the upper end of the rod after a period of time in which the rod has bent as its upper end moves with the moving layer A bore 5 is sunk through the layers 2, 3 and a slip region 4 and a plastics casing 6 is inserted in the bore. The lower end of the rod 7, which may be of steel or a narrow concrete pile, is firmly embedded in the bottom of the bore and the rod extends upwards to a shallow concrete wall 8 at the surface. A steel collar 9 at the top of the casing has a diametral bar 10 which is biased by a spring 11 towards the rod 7. An inclinometer or tiltmeter 12 such as a bubble level containing an electrolyte in which a number of electrodes are immersed is mounted on the upper end of the rod. The electrodes are coupled in a bridge circuit and a cover 13 is provided with a connecter 14 to which cables can be attached for conducting a signal from the tiltmeter to any convenient location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB550168A GB1189421A (en) | 1968-02-02 | 1968-02-02 | Measurement of Ground Slippage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB550168A GB1189421A (en) | 1968-02-02 | 1968-02-02 | Measurement of Ground Slippage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1189421A true GB1189421A (en) | 1970-04-29 |
Family
ID=9797407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB550168A Expired GB1189421A (en) | 1968-02-02 | 1968-02-02 | Measurement of Ground Slippage |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1189421A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519411A (en) * | 2011-10-28 | 2012-06-27 | 中国矿业大学(北京) | Roadway roof displacement precise detecting device and detecting method |
-
1968
- 1968-02-02 GB GB550168A patent/GB1189421A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519411A (en) * | 2011-10-28 | 2012-06-27 | 中国矿业大学(北京) | Roadway roof displacement precise detecting device and detecting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |