How to calculate the cohesion of rock

2. Although cohesion literally means force, it is actually more accurate to refer to the strength of force, similar to stress, so the unit is not n or kn, but kPa

3. The three reflect the bearing capacity and settlement capacity of the foundation soil. Cohesion is also called cohesion, which refers to the particles of the soil; Cohesion reflects the mutual attraction between soil particles. Soil is composed of molecular particles, water and air. The internal friction angle refers to the shear strength of soil, which reflects the friction performance of soil. I guess you can only ask such a question after completing the task~

5. It depends on your own choice. You can use weighted average (generally, you do it in this way. It's a conservative way, of course, because the rock and soil itself has a large error)

sum × C value of each floor) / total height

6. The severe degree is about 20KN / 65533&# 65533;, The cohesive force is about 10KPA.

generally, it ranges from several to ten, and the internal friction is about 20KPa. The cohesive force of strongly weathered rock is small, after all, it is proced in the process of weathering, and the value of internal friction is not large. The specific value needs to be measured on site

7. It is suggested that in the application of slope / W, it is better to analyze the slope condition and possible failure mode that you want to calculate. If it is a soil slope or a V-Class rock slope, slope / W can be used, because it may be an arc failure mode. If the slope is controlled by good rock or structural plane, slope / W is not suitable. Slide or phase is better. Of course, manual calculation is relatively simple.

8. Cohesion, also known as cohesion, is the mutual attraction between adjacent parts of the same substance, which is the expression of molecular force between molecules of the same substance. It is shown only when the molecules are very close (less than 10-6 cm). Cohesive force can make matter aggregate into liquid or solid. Especially in the liquid adhesion layer in contact with solid, e to the difference of cohesion and adhesion, the liquid infiltrates or does not infiltrate the solid
in rock mechanics and soil mechanics, τ= c+tan φ, That's Moore's shear theory, C is cohesion, φ Is the internal friction angle, τ It's friction.

9. The three reflect the bearing capacity and settlement capacity of the foundation soil. Cohesion is also called cohesion, which refers to the particles of the soil; Cohesion reflects the mutual attraction between soil particles. The internal friction angle refers to the shear strength of soil, which is composed of molecular particles, water and air