To quantify the strength of the rock mass, among many mathematical formula, RMR approach uses six parameters RMR=RQD/Jn*jr/Ja*Jw/SRF?

Mulusew Minuyelet Zewdie @Mulusew-Zewdie

11 February 2022 0 781 Report

my question is the formula is used to quantify the rock quality but parameters "Jw/SRF" creates a confusion because Jw=water pressure in the joint, this reduces rock strength but formulated as a nominator and SRF=stress reduction factor is formulated as denominator. how it could be? is there any one who clarify this please?

Badges
Science topic

More Mulusew Minuyelet Zewdie's questions See All

Is there any one who help me, how to process Hydrology soil group (HSG) from digital soil map of the world in ArcGIS software?

There is no HSG column in the attribute table . So from where could I drive the HSG please?

03 July 2022 8,711 1 View

One question related to geotechnics: what is the relationship of porosity and permeability of soils?

obviously the porosity percentage of clay soil is relatively more than sand, but clay is impermeable /seal. what I know is the porous the geologic material the is higher its porosity will be. so...

03 November 2021 9,877 7 View

What is rule of thumb mean in sample size estimation? Is there a book that clearly describes the rule of thumb?

While determining sample size, it is usually recommended to include 20 to 30% of the population as a sample size in the form of a rule of thumb. If you take this much sample, it is usually...

21 April 2020 4,932 12 View

What are the mechanisms of managing the heterogeneity effect during meta-analysis process rather than subgroup analysis?

These days, meta-analysis becomes an important technique to generate pool evidence to support decision making. However, the heterogeneity effect is affecting the quality of meta-analysis findings....

13 February 2020 4,954 3 View

I have found more papers with higher adjusted odds ratio than crude odds ratio from logistic regression analysis, do you have valid evidence on it?

These days, papers are published with higher adjusted odds ratios than the crude odds ratio. Although I consider the reality on the action of the confounders (changing the direction, lowering or...

13 February 2020 6,492 4 View

Any bias associated with under extraction of factors during EFA? How could we adjust for unexplained variance during multiple regression analysis?

Suppose the independent variable is food insecurity and dependent is mental health is dependent. while I do EFA for food insecurity the first factor only explain small percentatage like less than...

10 October 2016 4,352 0 View

Do you think can be any Uranium bearing rocks in Eastern part of Iran and western part of Afghanistan?

I want to know more about Uranium ore deposits in world.

11 August 2024 6,720 0 View

What may be the reasons for failures of Tube toi Tube Sheet Joints in Boiler Drum ?

We have observed that tube to tube sheet joint leaked in our boiler and needs to overcome same by knowing the root cause.

08 August 2024 3,161 0 View

In routine core analysis why we take whole rock samples, although we are taking plugs every foot?

Thanks

03 August 2024 3,567 2 View

What can i do to find the right topic for my thesis?

i am facing the difficulty to find the right and latest topic for my thesis. i searched and read hundreds of articles but i couldn't find the right one. what can i do I'm really confused.

02 August 2024 1,323 8 View

Do you think can be any diamond bearing rocks in Eastern part of Iran near to Birjand city?

I want to know more about diamond ore deposits in Iran.

02 August 2024 7,399 0 View

I ask Chinese seismologists to inform me: who should I contact to create a joint Forecast Center?

I ask Chinese seismologists to inform me: who should I contact to create a joint Forecast Center? I do not hide that the beginning of my work was connected with the successful forecast of the...

22 July 2024 2,276 1 View

Sample size for qualitative study?

I am working on scale development in behavioral finance by undertaking a mixed-method approach using the exploratory sequential design. The phenomenon has diverse meanings in existing literature...

20 July 2024 9,153 11 View

Do you think how can be cu bearing rocks with grade 10 in next to a granite body?

I want to know more about Cu deposits.

18 July 2024 8,834 0 View

Do you know best uranium bearing rocks except of alkali granites and their related sedimentary rocks?

I want to know more about U deposits.

10 July 2024 5,042 1 View

How to disperse silverparticles in water?

I synthesize silver nanoparticles ，and reserve it in water. Then, when I sonicate it some minutes or longer ,it couldn't be dispersed, most of them aggregate .Otherwise ,when I sonicate several...

09 July 2024 7,335 0 View