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Factors encouraging the rock slope instability |
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by Ganga Timilsina | 28-03-2020 16:55
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Factors encouraging the rock slope instability Slope stability refers to the condition of inclined soil or rock slopes to withstand or undergo movement. a. Surface Water: Surface water is that water which is found available either through heavy rainfall or from other water resources traversing from one place to another through the ground surface. Such water may be sailed or filtered from surface to underground causing shallow failure. b. Ground water: Ground water is that water which is being under the surface of the ground. It increases pore water pressure at depth causing the plane failure. c. Lithology Development of weak rocks such as fractured slates, phyllites and schists are highly susceptible to instability. Even presence pf calcareous interlayer in these rock increases porosity and vios formation owing to leaching and dissolution. Furthermore inter bedding and alteration of hard and soft rocks are other causative factors. D. Rock structure Intense folding, faulting and thrusting rock are highly vulnerable to sliding. Presence of many joint sets and fractures on rocks also lead to failure. Randomly oriented and stress relief also lead to failure, e. Weathering: Himalayan rock belongs to warm temperate and subtropical climatic zone. These climates are susceptible to disintegrate and decompose rocks in short time . Deep weathered rocks could not stand properly and any one agent such as rain, wind, glacier,etc. may wash away these rocks to low land. Nepal Himalaya constitutes phyllites and schists predominately. For example: when phyllites come in contact with water, sericite minerals present in it decompose vary fast and become hazardous in the point of view from instability. Other factors are slopes, bank undercutting, precipitation, seism and added weight . |
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Previous : Natural Disaster in Nepal
17 Comments
thank you
Posted 18-08-2020 18:29
Greetings
I do hope everything is going well..
Thank you so much for sharing your report..
It was awesome to go through it ..
Was really interesting and informative..
Keep writing and sharing your!!
Green cheers
Regards
Jasmine karki
Posted 29-03-2020 22:48
Hello
I hope you are doing well
Thank you so much for this report
Green cheers
Warm regards
Susmita
Posted 29-03-2020 01:24
Hello Ganga!!
Nice report on rock slope instability.
Keep on writing!!
GREEN CHEERS!!
Regards,
Sonika
Posted 28-03-2020 22:00
Thanks for sweet compliment meena
Posted 28-03-2020 20:43
Welcome @rachu
Posted 28-03-2020 20:42
Welcoem @rijina
Posted 28-03-2020 20:42
Okey @Swesha
Posted 28-03-2020 20:42
Thanks for the report.
Keep writing and shining.
Hope to know more from you.
Warm regards,
Meena
GREEN CHEERS
Posted 28-03-2020 20:10
Great report.
keep writing !!!
Posted 28-03-2020 20:09
Thank you for your report.
Posted 28-03-2020 19:23
Surface water and ground water is also the reason behind instability of rock.
Yours,
Soyam
Posted 28-03-2020 17:05
Hello Ganga!!
Rock slope instability is really a new topic for me.
Keep writing.
Yours,
Swesha
Posted 28-03-2020 17:03
Welcome@apsara
Posted 28-03-2020 17:01
Welcome @ramesh
Posted 28-03-2020 17:01
Nice report, green cheers!!
Posted 28-03-2020 17:00
New topic to me.. Thanks for your report.
Keep writing
Posted 28-03-2020 17:00