Discussion. Mangla: Part 1 and Part 2. Includes Corrigenda.

Abstract

Because Mangla formed the first keystone of a vast political settlement and was of great importance to the welfare of the 40 million inhabitants of West Pakistan, it received the enthusiastic support of all concerned with it.628. Relatively few engineers have the opportunity to be concerned with a project of so challenging a nature in both size and physical factors as to be well outside the normal range of jobs on which most of us are engaged during our professional lives. For those of us fortunate enough to be concerned with the design of Mangla, the problems associated with its great size continually surprised and occasionally astonished us even after working on the project for several years. I would like to express the gratitude of myself and my partners for the excellent response of the site staff to the many demands made upon them. 629. We hope that the Paper and subsequent discussion will adequately convey the great contributions made by large numbers of persons representing governments, financiers, contractors, manufacturers and engineers from many countries. We are delighted that all these agencies are represented at the discussion. Particularly welcome are the representative of the Pakistan High Commission and Mr Aldewereld, Vice President of the World Bank. Mr J. C. DickinsonThe timely commissioning of the Mangla generators was threatened by tilting of the power house structure. In the event it became clear that these movements were attributable to accumulation and removal of silt in the tailrace and not to fluctuation of reservoir level so that long-term problems did not exist. 631.Proper use of the synchronous bypass facilities has not to date (Nov. 1967) been possible due to difficulties with the cooling water supply and its filtration arising from irrigation valve discharge driving undue quantities of solids and fish back into the draft tubes from which supply is drawn. The Mangla generating capacity is so important to the system that loss of it can cause voltage fluctuations of an order harmful to auxiliaries, so extending the period of any outage. Part II Mr George H. AtkinsonI have always marvelled at the business side of contracting. Mangla was so large and so important that several items on the 'business side' became very large subjects in themselves. To organize the financing of a project like this in itself required the support of seven stalwart partners before we were able to bid for the job. Then there

Simulating the Impact of Climate Change with Different Reservoir Operating Strategies on Sedimentation of the Mangla Reservoir, Northern Pakistan

“…Since then, daily river flow data and occasional SSC measurements at the gauging stations were recorded to ultimately estimate the sediment inflow into the Mangla Reservoir. Furthermore, to account for the unmeasured bed load, the practice followed by the dam designers has been to take it as equal to 10% of the suspended sediment load (SS) and adding it to the latter to get the total sediment load for the Mangla Reservoir [33,34].…”