- Видео 62
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Mortaza Pirouz
Добавлен 22 июл 2018
Видео
Rock Mechanics - Conjugate Fractures - P37
Просмотров 7192 года назад
Problem 37. The figure below shows a block of fine-grained limestone that was experimentally shortened by about 1% at room temperature. Four sets of fractures developed. Fractures of sets ‘‘a’’ and ‘‘b’’ are conjugate shear surfaces (the angular relationship between which can be measured directly on the diagram). Fractures of set ‘‘c’’ are extension fractures that formed during loading. Fractur...
Rock Mechanics - Fault slips - Mohr Circle - P41
Просмотров 4852 года назад
Problem 41. The Ithaca area has two well developed sets of vertical fractures (joints) with strikes of 340° and 015°. The rocks have the mechanical properties shown in the table at the right. Assume that σ1 is horizontal, and that the confining pressure is equal the lithostatic load. a) What is the maximum possible magnitude of σ1 that these rocks can support at 1500 m depth? Show your calculat...
Rock Mechanics- Fault slip - Mohr Circle - P40
Просмотров 5042 года назад
Problem 40. Attached map showing the Johnson Valley Fault in southern California. This is a right-lateral strike-slip fault that lies a short distance to the north of the San Andreas Fault zone. On June 28, 1992, one of the largest earthquakes in recent decades occurred on the Johnson Valley Fault, a magnitude 7.5 event named the ‘‘Landers earthquake’’. This large earthquake presumably released...
Rock Mechanics - Pore Pressure - Mohr Circle - P39
Просмотров 1,3 тыс.2 года назад
Problem 39. The figure shows the failure envelope of a ‘‘tight’’ (low-permeability) sandstone, which is a petroleum reservoir rock. If sigma 1= 72MPa and sigma 3 = 42MPa, determine the amount of pore pressure that would be necessary to fracture this reservoir hydraulically.
Rock Mechanics - Failure envelope - Mohr Circle - P38
Просмотров 1,9 тыс.2 года назад
Problem 38. The results of four fracture experiments on samples of Rohan Tuff are recorded in the table below. 1) Draw Mohr circles for each experiment, and draw the failure envelope. 2)Determine the Coulomb coefficient (miu= coulomb coefficient = tan of coulomb failure) of the Rohan Tuff. 3) Determine the angle theta that the fracture plane is predicted to form with the sigma 3 direction when ...
Focal Mechanism Solution - P23 - Stereonet
Просмотров 1,8 тыс.2 года назад
Problem 23. A fault with dip direction = 170°, dip angle = 80°, and slip vector azimuth = 146° is present. a) Reconstruct the corresponding focal mechanism solution “beac-hball diagram” and determine the approximate azimuth and plunge angle of the P, T and N axes. b) Describe the type of fault and its movement sense that produced the earthquake. Based on the focal mechanism solution, construct ...
Basics of focal mechanism solution - P22
Просмотров 1,8 тыс.2 года назад
Some FMS, beach ball diagrams, are presented below. For each one, identify the general type of faults depicted (strike-slip, reverse, normal, oblique normal, oblique reverse), P, T, and N axes. Sketch a map of each of the two possible faults, representing their proper strike and indicating their dip direction if any and sense of displacement. The first one is done for you as an example.
Rotational Fault - P18 - Stereonet
Просмотров 8232 года назад
Problem 18. The figure is a geologic map showing a fault. On the east side of the fault the beds all have an attitude of 335°, 40°E. West of the fault the rocks are poorly exposed, with only two outcrops, which have different attitudes. 1) Plot the attitude in the hanging wall on the equal-area net, and also plot the range of possible attitudes in the footwall that could result from rotation on...
Conjugate fractures and principal stress directions - P14 - Stereonet
Просмотров 1,3 тыс.2 года назад
Problem 14. Plot conjugate joints and obtain three principal stress directions and discuss what type of faults are expected in that regime. Data are provided in right hand rule convention. a) 045/64 & 290/88 b) 113/30 & 310/26 c) 090/90 & 150/85
Slickenside lineation on a fault plane - P15 - Stereonet
Просмотров 2,9 тыс.2 года назад
Problem 15. Slickenside lineations trending 074◦ occur on a fault 120/50N. Determine the plunge of these lineations and their pitch in the plane of the fault.
Principal stress directions - P13
Просмотров 4502 года назад
Problem 13. The following figure at the bottom shows three pairs of conjugate shear surfaces. Sketch the arrows representing the three principal stress directions on each pair of conjugate shear surfaces.
Ore shoot on a fault plane - P12 - Stereonet
Просмотров 9142 года назад
Problem 12. A fault strikes due north and dips 70°E. A limestone bed with an attitude of 325°, 25°SW is cut by the fault. Hydrothermal alteration along the fault has resulted in an ore shoot at the intersection of the two planes. 1) What is the orientation of the ore shoot? 2) What is the pitch of the ore shoot in the plane of the fault? 3) What is the pitch of the ore shoot in the plane of the...
Basics of the Mohr Circle - P16
Просмотров 4522 года назад
Problem 16. Plane 1 has been plotted on the Mohr diagram in. Determine the normal and shear stresses on planes 2 through 5 and plot them on the Mohr diagram. (Recall that trigonometric functions of angles in the second and fourth quadrants are negative, e.g., cos 180= -1)
Angular unconformity - Rotation - P5 - Stereonet
Просмотров 6372 года назад
Problem 5. Bedding attitude below an angular unconformity is N15E/58NW and above the unconformity is N15E/23NW. Obtain the bedding attitude after the first deformation phase.
Angular unconformity - Rotation - P4 - Stereonet
Просмотров 7222 года назад
Angular unconformity - Rotation - P4 - Stereonet
Three drill holes - Bedding attitude - P10 - Stereonet
Просмотров 9642 года назад
Three drill holes - Bedding attitude - P10 - Stereonet
Paleocurrent direction - P8 - Stereonet
Просмотров 2,4 тыс.2 года назад
Paleocurrent direction - P8 - Stereonet
Line rotation in space - P9 - Stereonet
Просмотров 5272 года назад
Line rotation in space - P9 - Stereonet
Intersection of two planes - P6 - Stereonet
Просмотров 5662 года назад
Intersection of two planes - P6 - Stereonet
Apparent and true dip - P7 - Stereonet
Просмотров 4,2 тыс.2 года назад
Apparent and true dip - P7 - Stereonet
3 Petrel -- Covert Borhole Data to Time Domain
Просмотров 6173 года назад
3 Petrel Covert Borhole Data to Time Domain
5 Petrel -- Digitizing Peaks, troughs, or crossings
Просмотров 2473 года назад
5 Petrel Digitizing Peaks, troughs, or crossings
6 Petrel -- Create a Polygon for Study Area
Просмотров 1,7 тыс.3 года назад
6 Petrel Create a Polygon for Study Area
7 Petrel -- Convert Horizon to Time Surface
Просмотров 1,5 тыс.3 года назад
7 Petrel Convert Horizon to Time Surface
8 Petrel -- Covert Time Srface to Structure Map
Просмотров 8 тыс.3 года назад
8 Petrel Covert Time Srface to Structure Map
9 Petrel -- Organize your files in the input box
Просмотров 1583 года назад
9 Petrel Organize your files in the input box
10 Petrel -- Seismic Attribute Variance
Просмотров 6 тыс.3 года назад
10 Petrel Seismic Attribute Variance
i dont understand how the angle of the axial plane between a 55° and a 48° dipping limb can be greater than both of them? shouldn't the axial plane be tilted with (55+48)/2 ?
sick explanation
Do you have any trick for V0k method in Petrel? Thanks
Why you draw phi from the center? Phi degree should count from the perimeter.
That complement doesn’t work
How we stabilizing this For increasing the slope of cut or decreasing The friction is it as The bedding plane as it is
10 20 30 50 60...where is 40?
Thank you very much 🎉
help
An open pit rock slope at your mine is intersected by two fault planes and a set of major joints. The dips, dip directions and friction angles of the faults and joint planes are given in the table below: Plane Dip Dip direction Friction angle Fault 1 60° 114° 23° Fault 2 80° 250° 20° Joint set 1 40° 120° 25° The dip and dip direction of the slope are 40° and 164° respectively. Use the stereonet provided to determine whether there is potential instability in the slope. Then using the wedge stability charts provided, determine the factor of safety of the slope. Comment on the confidence you have in the factor of safety determined considering the advantages and disadvantages of the methodology used.
thnkz 🌻
Hi Sir Kindly refer any software to find out principle stresses with the help of dip and dip direction
3:10 4:20 7:15 9:35 11:05
Thank you, Mortaza
Thank you Mortaza
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بسیار سپاسگزارم عالی بود
Very good
thank you so much this has been very helpful for my undergraduate degree!
very informative and well clearly explained. Thank you Mortaza. Greetings from India.
Hi! Nice tutrial, but i use mac, how can i add the symbols? I cant find the file
Thanks a lot
Thank you!
what is this method called? Equatorial equal method? or pole method? Sir you put strike on 50 instead of 60?
Correct, 50! I should fix the video.
Thank you so much - south korea
Thanks sir I am form india ❤️
Thanks .
Can we know the dipping direction of the last question (Oblique Reverse fault)? Or it cannot be determined with the information provided in this question? Thanks!
You can obtain the dip direction of the fault plane. You should read the strike and dip of the fault plane on the stereonet. Read it in the Right Hand Rule convention, and then add 90 to the strike azimuth, and that will be the dip direction.
awesome video. Thanks Mortaza
You could fold the paper along the lines of the angles, rather than cutting.
great thanks for your very informative tutorial video.
thank you so much!!
How do we calculate the middle point of the stresses sigma A nd sigma C?
Tata??
Thank you a lot
Amazing explanation
Really thanks.
Very helpful for me thank you
Could you pls say why have you put the checkshot data under the well tab. Is this VSP data that has been taken from one drilled well or what? As i know the chekshots should be loaded as seismic lines. Thank you for answering
Thank you
Thank you four your sharing
what a hero
Thank you
Thanks
id love a similar video for toppling and another for wedge failures.
is this only for a plane failure?
From Morocco, thank u for Coulomb faille and Mohr cercle. Please can my students have more applications on this in each 3 situations: Normal faults, strike slip faults and reverse faults. Thank you.
Very informative, well done! I was wondering if i have a oriented core and measured Alpha and beta of a bed, is it possible to determine the strike and dip using stereonet? Thank you.
Hello brother, can i ask u question. If we have many checkshot how we calculate the depth. Because many well. Thank you very much. Nice video
do you have the answer?
A difficult subject explained in an easy way. Even a person newly introduced will understand. Well done