水利水电外文翻译.docx

1、水利水电外文翻译Hydromechanical analysis of Placing and protecting fillflow behavior in damAbstract:Primary surface according to the design requirements of excavation and stone processing, to ensure that the dense, with certain strength and stability meet the requirements. Quarry mining, transport in the re

2、pair of the road at the same time, excavator, bulldozer, with clear reclaimer field covering layer, to ensure that no weed roots and soil tillage. Abandon the material piling up in the yard right as obstinate cultivated material, also prepare slope to prevent soil erosiondam filling should be done:

3、regardless of which part of the fill and the final foundation surface exposure time does not exceed 72 hours. Fill method should also prevent the separation of the filling material. If the contract requirements in different lots of different filling packing and contracting business in construction s

4、hould prevent of confusion between the different types of fillers.Key words: Hydromechanical fill permeabilityAny undesirable material accumulated on the fill surface shall be removed before placeing the next layer of fill material shall be placed on a previous layer of that has dried out,become sat

5、urated or in any way deteriorated by exposure or by spilling of other material or disterbance by mechanical transport or by deposition of wind blown particles or by any other means. Before fresh fill material is placed aoo such deteriorated fill or foreign material shall be removed to a depth at whi

6、ch material of an acceptable standard is exposed. The surface of each layer is to be approved by the Engineer before the next layer is placed.Any fill shall be placed in uniform layers not greater than the approved thickness as specified hereafter and in an orderly sequence approximately horizontal

7、along the centreline of the where specified of directed otherwise, no portion of any embankment shall be stepped more than 3 feet higher than any immediately adjacent portion except where permitted by the Engineer and the slope formed by such steps shall not exceed 1V:3H and not less than 1V:4H from

8、 one level to as shown on the Drawings or as otherwise directed, all fill placement surfaces shall be sloped at right angles to the centerline of the embankment in both the upstream and downstream direction from the downstream edge of the core so as to allow run-off and prevent the accumulation of w

9、ater. The drainage slope on the temporary surface of anny zone shall not exceed 1 on 30 and the highest point shall be de downstream edge of the core.Where,due to the specified geometry of the excavation into the top of the existing embankments, the surface slope is towards the downstream edge of th

10、e core, the Contractor shall take such measures an necessary to prevent erosion of fine material being washed into the filter zones downstream of the core. Any surface layer of filter material contaminated by such drainage or other cause shall be removed and replaced with fresh filter material befor

11、e placing the next layer above.Construction of any one embankment shall be carried out over the maximum possible length,mo less than 1500 feet,of that embankment in such a manner that mo temporary construction slope crosses the axis of the embankment except as approved by the Engineer. Where a tempo

12、rary constrction slope crossing the axis of the embankment is permitted by the Engineer it shall be formed at a gradient of 1V：5H. When subsequently placeing material against this slope it shall be cut back in steps equal to the layer thickness to avoid feather edges. The Contractor shall complete e

13、ach layer of fill fully up to the abutment contacts and structures and against sloping foundations and ensure that the fill is compacted an specified throughout. The Contractor shall not allow the fill in those areas to lag behind or to get ahead of the normal fill placing operations and form feathe

14、r edges, except where fill has been placed in advance to cover grouted surface.Should not contain humus soil was used to fill the soil, roots, or other harmful substances, to fill jobs should spread in layers shop, motor grader leveling, each layer of loose paving thickness should be not more than 3

15、0cm. Each filler layer thickness is not less than 50 cm, top earthwork embankment to the pavement surface layer at the end of the compaction thickness should not less than 10cm.Where the Contractor is allowed to use either grvel fill and /or sandstone no intermixing of the two materials in a layer s

16、hall be allowed. The Constractor may place either of the materials in adjacent layers or sections of the embankment.The Constractor shall be responsible for protecting temporary fill surfaces against damage of erosion. At the end of each working day,or if it start to rain ,the surface of the fill shall be made smooth and compacted with a smooth drum roller with a drainage slope to induce runoff from the filled areas and leave no areas that can retain water. Where necessary,