SU889784A1

SU889784A1 - Method of erecting hydraulically filled structures in water ducts

Info

Publication number: SU889784A1
Application number: SU802946710A
Authority: SU
Inventors: Василий Алексеевич Нешин; Давид Лазаревич Меламут; Николай Константинович Голубев
Priority date: 1980-06-27
Filing date: 1980-06-27
Publication date: 1981-12-15

Description

(54) СПОСОБ ВОЗВЕДЕНИЯ НАМЫВНЫХ СООРУЖЕНИЙ(54) METHOD OF CONSTRUCTION OF CLEARING STRUCTURES

В ВОДОТОКАХIN WATERWAYS

II

Изобретение относитс к способам возведени намывных сооружений в водотоках с помощью землесосных снар дов.The invention relates to methods for erecting alluvial structures in water courses using suction dams.

Известен способ возведени намывных сооружений в водотоках, включающий подачу пульпы по пульпопроводам, расположенным в нескольких створах сооружени 1.There is a known method of erection of alluvial structures in watercourses, including the supply of pulp through slurry pipelines located in several sections of structure 1.

Наиболее близок к предлагаемому способ возведени намывных сооружений, заключающийс в подаче грунта в текущую воду с интенсивностью, превыщающей транспортирующую способность потока 2.Closest to the proposed method of erection of alluvial structures, which consists in supplying soil to the flowing water with an intensity exceeding the transporting capacity of the stream 2.

Существенным недостатком этих способов вл етс унос грунта потоком в особенности при. значительных его глубинах, что снижает эффективность способа и требует необходимости сооружени каменного банкета.A significant disadvantage of these methods is the entrainment of the soil, especially when. its considerable depths, which reduces the efficiency of the method and requires the construction of a stone banquet.

Цель изобретени - повыщение эффективности способа путем уменьшени уноса грунта.The purpose of the invention is to increase the efficiency of the method by reducing the entrainment of the soil.

Поставленна цель достигаетс тем, что подачу грунта осуществл ют в несколько русов по глубине потока, причем нижний рус намывают с опережением последующего на величину не менее величины заложени его торцевого откоса.This goal is achieved by the fact that the soil is supplied in several rushes along the depth of the stream, and the lower river is washed ahead of the next by an amount not less than the amount of laying of its end slope.

На фиг. 1 показана схема способа возведени намывных сооружений, план; на фиг. 2 - то же, разрез А-А на фиг. 1. Способ осуществл етс следующим об разом.FIG. 1 shows a diagram of the method of construction of alluvial structures, plan in fig. 2 is the same, section A-A in FIG. 1. The method is carried out as follows.

Намыв грунта в сооружение производ т раздельно в два руса по глубине потока реки. Нижний подводный рус 1 намывают с опережением намыва верхнего руса 2Alluviation of soil into the structure is carried out separately in two rivers along the depth of the river flow. Lower submarine rus 1 is washed ahead of the washout of the upper rus 2

JJJ на длину i, котора должна быть не менее величины заложени у торцевого подводного откоса. При этом намыв нижнего руса 1 производ т на высоту, обеспечивающую осаждение грунта в пределах проектного профил сооружени . Разработку грунта ществл ют землесосным снар дом 3, например , в резерве 4, и транспортируют его к месту укладки по плавучему пульпопроводу 5, торец которого при достижении заданной высоты намыва периодически перемещают от одного берега к другому.JJJ for the length i, which should be no less than the size of the laying at the end of the underwater slope. At the same time, the inlet of the lower russa 1 is produced to a height that ensures the sedimentation of the soil within the design structure of the structure. The development is dredged with a suction dredger 3, for example, in reserve 4, and transported to the place of laying by a floating slurry pipeline 5, the end of which is periodically moved from one bank to the other when a given height is reached.

Claims

20 Thus, the soil is washed into the lower underwater river not at the full depth of the flow H and at a lower speed than when the structure is cast all the way to the full depth of the flow, thereby reducing soil carry-over outside the structure. The erection of the upper tier 2 is carried out at small depths of the flow h, which are formed after the flushing of the lower underwater trench 1. At the same time, the length of the trajectory of the deposition of particles decreases, and consequently the loss of soil is reduced. Laying of the soil in the upper rus 2 is carried out by end-to-face alluvium across the stream, while filling the distribution slurry pipe 6 over the washed soil. For this, the development of the soil is carried out by suction dredges 7 and transported to the place of laying by the coastal slurry pipe 8. The method can be used in the erection of land structures on large rivers having great depths. The effect is achieved by eliminating the dumping of the banquet and reducing the entrainment of soil beyond the construction profile. The expected economic effect from the implementation of the invention in comparison with the construction of a channel dam with a preliminary blocking of the flow with unbreakable material is more than 500 thousand rubles. The invention of the method of erection of alluvial structures in watercourses, which consists in supplying the soil to the flowing water with an intensity exceeding the transporting capacity of the stream, characterized in that, in order to increase its efficiency by reducing the entrainment of the soil, the soil is fed in Moreover, the lower Rus is washed ahead of the next by an amount not less than the magnitude of the laying of its end slope. Sources of information taken into account during the examination 1. USSR author's certificate No. 156483, cl. E 02 B 7/06, 1961.

2. USSR author's certificate number 97520, cl. E 02 B 7/06, 1952.