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Hill slope instability of Nainital City,Kumaun Lesser Himalaya,Uttarakhand,India

Journal of Rock Mechanics and Geotechnical Engineering 2018年第2期10卷 280-289页

作者： Nirvan Sah Mohit Kumar Rajeev Upadhyay som dutt Department of Geology(CAS) Kumaun UniversityNainital263001India Wadia Institute of Himalayan Geology 33 General Mahadeo Singh RoadDehradun248001India

Nainital City of Kumaun Lesser Himalaya is prone to mass wasting processes during monsoon season,which mischievously triggers the hill slope instability in this region. Slate, dolomitic limestone, silty sandstone and rhythmite of the Krol Formation are the main rock types. The present study focuses on the investigation of slope stability in the region in terms of potential seismicity and landslide. Geological and geotechnical mapping indicates that the major portion of the area is characterized by slope wash materials and buildings. The combination of 3-4 joint sets with one random joint is the main structure at *** major geological structures of this area are Nainital lake fault passing from the center of the lake, Main Boundary Thrust at SW, and Khuriya Fault passing from the SE direction of Nainital City. This work finds that different types of discontinuities(e.g. joints and faults), overburden due to unplanned civil structures,and neotectonic activity in the vicinity of this ara affect the stability of the city. The slate forms the base of the city, dipping slightly towards the lake side along the NW direction, thus accelerating the instability of this area. Rock mass rating(RMR), slope mass rating, factor of safety(FOS) and graphical analysis of the discontinuity for slope kinematics indicate that the study area is a landslide-prone zone. This study can facilitate reducing the risk of human life, and contribute to the ongoing construction works in the area.

关键词： Hill slope instability Himalaya region Wedge failure Rock mass rating(RMR) Factor of safety(FOS)

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A New Record on Flowering in Harar (<i>Terminalia chebula</i>Retz.) Seedling

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American Journal of Plant Sciences 2012年第5期3卷 693-695页

作者： Kamal Sharma Sanjeev Thakur Seema Sharma som dutt Sharma Dr. Y.S. Parmar University of Horticulture and Forestry Regional Horticultural and Forestry Research Station Hamirpur India Dr. Y.S. Parmar University of Horticulture and Forestry Regional Horticultural Research Station Kangra India

Harar (Terminalia chebula), a large deciduous tree belongs to family combretaceae. It grows naturally in greater part of India up to 1500 m elevation. Due to several alkaloids present in fruit, it is used as laxative, purgative and astringent for curing a number of ailments. Keeping in view its medicinal and tanning properties, the authors have been working for the last two decades on various aspects like propagation and development of promising strains of harar. Grafting/budding techniques have been standardized to produce true to type precocious plants which bear flower in two to three years. However, flowering has been observed in three months old seedling, which can be ascribed to biochemical and/or cellular changes. Early flowering is a rare incidence in tree seedlings which otherwise could be very useful for breeding and early evaluation of fruit species.

关键词： Terminalia chebula Early Flowering Seedling

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