DUE TO INCREASE IN THE WATER CONTENTS OF A VERTICAL CLIFF (SOFT ROCK) THE ANGLE OF REPOSE FAILED TO RESIST THE INTERNAL FRICTION OF GRANULAR SOILS.

Various systems of classifying soils for civil engineering purposes have been devised and the use of different systems has led to much confusion. The course grained soils are usually classified mainly on the basis of their particle size distribution and the fine grained soils on the basis of their plasticity characteristics. The two most widely used systems of soil classification are those of public road administration and of chemical composition. There is wide variation in the characteristics of different soils and the performance of each individual soil is affected by its moisture content and the density . In general the properties of the soils composed largely of course materials are primarily controlled by the characteristics of the particles, but for soils composed largely of clays and colloids the properties are primarily controlled by the moisture content. Behavior of soils containing 30 percent or more clay depends solely on the characteristics of the clay. It is particularly mentioned here that the soft rock existing in the vertical cliff where the bus accident took place in Sukker Khud bridge on 7-10-2025 at about 6 pm and eighteen dead bodies recovered by the administration and the police authorities, so happened because of the increase of water contents in the soil (soft rock) due to unstable position of the angle of repose at that particular place, came down heavily at the moment when that bus was crossing at that particular place and there was no chance to back the bus and have rescue on the tragedy occurred because of the sudden land slide. The site was in person visited by me on 8-10-2025 at 8-30 am and too at the time of evening at 3-30 pm when the road was opened for the vehicular traffic by the HPPWD authorities working day and night at the site for rescue operation along with heavy machinery and infrastructure for the recovery of site to safe vehicular traffic, where said accident took place because of the sudden land slide on the bus body where 18 casualties have been reported by the administration and the entire administration was present at the site of work when the local Minister of the Bilaspur district Shri Rajesh Dharmani visited the place of accident and verify the situation at the site of work, Shri jeet Singh Thakur Superintending Engineer HPPWD Bilaspur issued necessary instructions to the department of HPPWD to improve the entire area of dangerous profile existing slopes and the fractured soft rocks and open it to traffic after the needful under these instructions of the Engineering department the Executive Engineer Jhandutta Division took cognisance and made it fit for the vehicular traffic at about 3-30 pm, in the presence of the local people and the administration, working for the welfare of the society and circle and doing needful since this mis-happening :-- Er Fateh chand Guleria, Director RTI welfare Association registered number HPCD, 3552 , Bilaspur Himachal Pradesh phone number, 9459334377