Submit Paper

Article Processing Fee

Pay Online

           

Crossref logo

  DOI Prefix   10.20431


 

International Journal of Constructive Research in Civil Engineering
Volume 5, Issue 2, 2019, Page No: 27-32

Target Oriented Procedure for Erosion Control in the Nanka/Agulu Axis of Nigeria

Onyeka, J.O.1, Obi, L.E.1*, Uwanugo, R.G.U.2

1. Civil Engineering Department, Imo State University, Owerri, Nigeria.
2. Civil Engineering Department, Chukwuemeka Odumegwu Ojukwu University, Anambra State, Nigeria.

Citation :Onyeka, J.O., Obi, L.E., Target Oriented Procedure for Erosion Control in the Nanka/Agulu Axis of Nigeria International Journal of Constructive Research in Civil Engineering 2019, 5(2) : 27-32.

Abstract

This work addresses the gully erosion problems of the Nanka/Agulu area of Anambra State, Nigeria. Field reconnaissance and observation visits were made to five major erosion sites in the study area to obtain a first-hand and on-the-spot assessment of the degree of erosion menace in these areas and to collect soil samples for laboratory analyses. The collected soil samples were subjected to visual inspection before classification tests. The investigation/field work was carried out and conducted in accordance with the guidelines given in the general specification (erosion control) vol.11 of the Federal Ministry of Works and Housing, and where necessary, the British Code of Practi ce for site investigation (C.P.2089). The representative soil samples were subjected to the Natural Moisture Content, Atterberg Limits, Mechanical Sieve Analysis, Compaction and Triaxial Compression tests to ascertain their nature, texture and erodibility. Data obtained from the sites and from these tests were inserted into mathematical formulations on the management of erosion problems. This enabled the quantification of the soils' erodibility estimation and the recommendations on the management of the erosion problems in the study area. With data obtained at the sites, computations and designs of Revetments along the sides of the Gullies, design of Run-off/Flood Drainage Channels, and, design of Run-off/Flood and Sediment Retarding Structure (Sedimentation Weir) were carried out. Results revealed that proper Soil Conservation Designs, Flow Velocity Control, Reduction of Soil Segregation(Rainfall Erosivity), Soil Conservation Measures, proper Management of Human Activities. Agroforestry control. Ground Cover Establishment and construction of necessary Erosion Control Structures at the proper locations as this will adequately help in checking the erosion problems.


Download Full paper: Click Here