Permeability test is necessary on terrain where are predicted soakaways which store water after big rainfall and provide efficient soil infiltration. A Lugeon is a unit devised to quantify the water permeability of bedrock and the hydraulic conductivity resulting from fractures; it is named after Maurice Lugeon, a Swiss geologist who first formulated the method in More specifically, the Lugeon test is used to measure the amount of water. Steady flow and its applications. ▫. Theim equation. ▫ Specific Capacity. ▫. Falling Head Test. ▫. Packer test. ▫ Wire line packer. ▫. Lugeon Test. ▫. Flow Log. ▫.
|Genre:||Health and Food|
|Published (Last):||12 January 2018|
|PDF File Size:||19.9 Mb|
|ePub File Size:||5.12 Mb|
|Price:||Free* [*Free Regsitration Required]|
Permeability test is necessary on terrain where are predicted soakaways which store water after big rainfall and provide efficient soil infiltration. Usually they are used in areas where surface run-off cannot be disposed into existing sewers or watercourses. If we want to infiltrate rainfall water at certain location, it is very important to know tesg much is the soil permeable.
Data obtained on ljgeon samples in the laboratory may give insufficient reliable data of average soil permeability. And in rock mass the situation is even more complex.
Although there are data on the permeability coefficient for certain types of terrain sandy, gravely or clayeyexperience has shown that this value may vary even in terrain with the same type of substrate, so it is necessary to do testing on location. Table of porosity and water permeability of certain rocks and soil. The waterflow which passing through the rock mass depends of some parameters such as: The Lugeon test is an in- situ testing method widely used to estimate the average hydraulic conductivity in rock mass.
Usually, on a certain section of borehole, there are installed packers through which a special pipe brings water under pressure. In the enterence of the borehole pressure is measured with the pressure gauge, and the flow is measured with the watermeter. Deployment using borehole transducer to measure pressure data.
Test is typically conducted in five steps. At each step, a constant water pressure is applied for a duration of 10 minutes.
Lugeon test, complete online calculator
Using the average values of water pressure and flow rate measured in each stage, the average hydraulic conductivity of the rock mass is expressed in terms of Lugeon unit. Lugeon value could also represent the rock jointing conditions, considering a big influence of rock discontinuities condition on value of hydraulic condutivity.
Typical range of Lugeon values and the corresponding rock lugeob is indicated in the table below. Range of Lugeon values and the corresponding rock condition. Permeability test can be done in rocks and in the ground, which is the theme for one of the next blogs…. If you tesst any questions, bee free to contact us!
Permeability test — Lugeon test. Typical borehole soakaway design.
Lugeon test –
Lugeon test — stage. Permeability test — the results. Coefficient of permeability of the rock mass.
Open pit protection — Roxanich Heritage Wine Hotel and wine cellar How to build on unstable terrains and avoid landslides? Reconstruction and conversion of a former Croatian post office building in Rijeka Gabion walls Georadar How to determine number and depth of exploration boreholes? Open pit lugepn for Hotel Sensatori in Dubrovnik — reinforced concrete piles and strand anchors Why the Tower of Pisa commence to lean? And how the inclination was stabilised?