Man-made and natural slopes that are suspected to be unsafe against sliding can be made useable and improved for safe operation. Though various techniques are developed to make slope stable but all method are serving to either weight reduction or improve shear strength of soil mass in suspected failure zone across the cross-section of slope. Mass reduction process reduces the sliding susceptibility of a slope.
The following measures are suggested to improve stability:
a. Providing a flat slope-trimming steeper one reduces weight of soil mass that tend to slide leading slope failure. This measure can be adopted anywhere across the slope.
b. A berm can be constructed to improve resistance against movement. The berm is located below toe of slope and frequently used where failure of base is suspected to be occurred. Dear reader in our upcoming posts we will learn about loading berm to stabilize slope of dam and its foundation.
d. Lowering of subsurface water level by providing efficient drainage which also reduce seepage force and thus helps us to increase stability of slope.
e. Any stabilization technique of soil also helps to increase stability of slope. The stabilization may be mechanical stabilization or chemical stabilization. We have discussed some techniques and some will be published soon.
Dear reader considering economy we have to change stabilization methods. Here we have learned five measures in our next part we will learn rest measures of slope stabilization of soil mass.