Questions tagged [geotechnical-engineering]
Geotechnical Engineering is a branch of Civil Engineering focused on the engineering properties and behavior of natural and engineered geomaterials (soils and rocks), as well as the design and construction of foundations, earth dams and levees, retaining walls, embankments, underground structures and tunnels.
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about shear strength of soil
A direct shear test on specimens of fine sand gave the following results Normal stress (lb/ft2 ) 2100 , 3700 , 4500 Shearing stress (lb/ft2 ) 970 , 1700 , 2080 Determine: (i) the angle of internal ...
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Brainstorming - Is it practically possible to modify Air Earth Tunnel and Geothermal Heating & Cooling Sytem
What I want to know is a simple setup that can heat/cool a house using hdpe or pex pipes coiled deep underground (depth of approx 13 feet or 3.9 metres) through which air is circulated and thus, ...
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If drilling to the mantle is too hot for drills and too hard for millimeter waves, why not use positrons?
Would it be possible to make a millimeter sized hole which extends down to the mantle, and fill it in with a heat sink, to draw the heat upwards to a mine for steam production and then power?
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How does the maintain load test work?
A project site in my company is currently working on testing the settlement of our piles using the maintain load test, so my boss is asking me to find out some information on this. In particular, he ...
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why are horizontal and vertical stresses on an element in soil mass considered as principal stresses?
Despite the fact that there are shear stresses also involved while considering deformations in soil why are the horizontal and vertical stresses on an element as shown in below figure considered as ...
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Geotechnical engineering: The $\phi=0$ concept
I am reading B.M. Das' book: Principles of Geotechnical Engineering, 6th edn. In the chapter concerning shear strength of soil the $\phi =0$-concept is introduced.$\phi=0$-concept" /> In an ...
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Is internal friction angle isotropic in soil?
I am studying geotechnical engineering and specifically the chapter in B.M. Das book of the same name, 6th edition. On the topic of shear forces, reference to internal friction angle, $\phi$ is made. ...
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Relationship between inclination of failure plane and angle of internal friction in soil
I am reading Geotechnical engineering by B.M. Das, 6th edition. In the chapter on shear strength of soil this is stated: "It can be shown that $2\theta = 90 + \phi' $ " where $\theta$ is the ...
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What is the largest diameter a vertical mine shaft may have in bedrock?
What are the design constraints to the diameter of a mine shaft in bedrock, considering the pressure of the ambient rock, its compression strength, the width of the liner, and its compression strength?...
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What is the best way to disrupt rock slope landslides?
From my understanding, landslides and other erosion occurs along various natural formations in the geologic bed, such that all the organic material above some geologic strong point fails, and all the ...
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Would it be possible to generate electricity from continental drift?
It definitely wouldn't be practical compared to other sources of energy, but given currently plausible technology, would it be theoretically possible to use the movement of tectonic plates (as in ...
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what kind of expert can analyze drought effect on rock fall risk?
I'm discussing safety with a team doing endangered plant conservation work in a small very narrow gulch with walls hundreds of feet high. We see evidence that rocks fall often, and would like to ...
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What is this geotechnical mechanical drop device and what does it measure?
I encounter this device from youtube. The engineer drops a weight on the device to measure something. After they doing some earthmoving. https://youtu.be/r5Kj4-VqGVs?t=474
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Soil movement due to open cut excavation
When I model an open up excavation in the computer model, I found that when the surcharge applied on slope is long enough , the soil movement (downwards under the surcharge region) is lower. When I ...
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Water flow near dam geomechanics
I have basic Geomechanics question , one of the drawing is true and the others are wrong , which one ? , explain why the others are wrong . First one wrong because the number of squares are not equal ...
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