CN205035769U

CN205035769U - Geomembrane core -wall pond on a hill embankment dam

Info

Publication number: CN205035769U
Application number: CN201520800515.XU
Authority: CN
Inventors: 秦鹏; 秦植海; 曹鑫; 张喆瑜; 王海波; 夏日风; 尚晋辉
Original assignee: Zhejiang University of Water Resources and Electric Power
Current assignee: Zhejiang University of Water Resources and Electric Power
Priority date: 2015-10-13
Filing date: 2015-10-13
Publication date: 2016-02-17
Anticipated expiration: 2025-10-13

Abstract

The utility model discloses a geomembrane core -wall pond on a hill embankment dam comprises dam body, geomembrane, residual soil, clinosol, silty clay. The geomembrane is construct in the middle of the dam body, and the width of cloth about geomembrane earth rockfill dam with central core is laid to residual soil, clinosol, the compaction in layers, and silty clay thickness is greater than 20cm, lays about the geomembrane, and the protection geomembrane is not punctureed by residual soil, clinosol edges and corners at embankment dam construction, run duration. The utility model discloses a geomembrane core -wall pond on a hill embankment dam utilizes the geomembrane to replace the precious clay in mountain area to make the core -wall, reduces engineering cost. Because of the geomembrane has good water -resisting property, ductility, durability, use the geomembrane to construct with low costs, the construction convenience of earth rockfill dam with central core, construction speed is fast. Service life increases, and geomembrane water tightness can not reduce.

Description

Geomembrane core-wall pond on a hill earth and rockfill dam

Technical field

The utility model relates to hydraulic engineering technical field, specifically a kind of geomembrane core-wall pond on a hill earth and rockfill dam.

Background technology

Along with the development of science and technology, large and middle reservoirs generally all makes concrete gravity dam or arched concrete dam, and spreads all over the place in the middle-size and small-size pond on a hill in mountain area, because water retention capacity is little, reserve-water-level is low, the harm caused after destruction is little, generally continues to use traditional way, gather materials on the spot, make earth and rockfill dam.First residual soil, clinosol have just become gathers materials on the spot, and occurrence condition determines residual soil, clinosol particle diameter is large, corner angle clearly demarcated, and transmission coefficient is large.In order to reduce dam body seepage, generally make clay earth rockfill dam with central core or clay earth dam with inclined core by code requirement.The Formation rule of soil determines, and the clay made required for core-wall is mainly present in plains region, and mountain area exactly lacks clay.Make to build clay earth rockfill dam with central core cost greatly to improve.And clay earth rockfill dam with central core difficulty of construction is large, construction quality is difficult to control, and increases, again and again occur the problems such as dam body seepage with service life.

Utility model content

In order to solve the above-mentioned technical problem existed in prior art, the utility model provides a kind of geomembrane core-wall pond on a hill earth and rockfill dam, be made up of dam body, geomembrane, residual soil, clinosol, silty clay, described geomembrane is built in the middle of dam body, residual soil, clinosol are laid on geomembrane earth rockfill dam with central core left and right width, compaction in layers.

Further, described silty clay thickness is greater than 20cm, and about being laid on geomembrane, protection geomembrane is not punctured by residual soil, clinosol corner angle at rock fill dam construction, run duration.

Geomembrane core-wall pond on a hill earth and rockfill dam disclosed in the utility model, is utilize geomembrane to replace the clay of mountain area preciousness to make core-wall, reduces engineering cost.Because geomembrane has good water-resisting property, ductility, durability, earth rockfill dam with central core cost is low, easy construction to use geomembrane to build, and speed of application is fast.Service life increases, and geomembrane water isolating can not reduce.

Accompanying drawing explanation

Fig. 1 is geomembrane core-wall pond on a hill earth and rockfill dam sectional schematic diagram;

Fig. 2 is clay earth rockfill dam with central core sectional schematic diagram;

Fig. 3 is width on the right side of geomembrane core-wall pond on a hill earth and rockfill dam, left side width first floor sequence of construction schematic diagram;

Fig. 4 is width second layer sequence of construction schematic diagram on the right side of this earth and rockfill dam.

Detailed description of the invention

Below in conjunction with accompanying drawing, utility model is described further.

As Figure 1-4; geomembrane core-wall pond on a hill earth and rockfill dam of the present utility model is made up of dam body 1, geomembrane 2, residual soil, clinosol 3, silty clay 4; described geomembrane 2 is built in the middle of dam body 1; residual soil, clinosol 3 are laid on geomembrane earth rockfill dam with central core left and right width; compaction in layers; described silty clay 4 thickness is greater than 20cm, is laid on geomembrane about 2, and protection geomembrane 2 is not punctured by residual soil, clinosol 3 corner angle at rock fill dam construction, run duration.

During geomembrane core-wall pond on a hill rock fill dam construction of the present utility model, by specification laying depth, compaction requirement, lay right side width residual soil, clinosol, finishing overlapping part is domatic, laying is greater than 20cm thickness silty clay, is laid on silty clay by geomembrane coiled material, and is rolled to residual soil, the clinosol surface of compacting, lay on geomembrane and be greater than 20cm thickness silty clay (the domatic position of overlapping part), a construction cell completes.By width on the left of the earth and rockfill dam of construction cell construction above, left and right sides width is alternately constructed to dam crest.After geomembrane core-wall pond on a hill earth and rockfill dam main body completes, upstream and downstream Slope Treatment is identical with conventional method.

Claims

1. geomembrane core-wall pond on a hill earth and rockfill dam, be made up of dam body (1), geomembrane (2), residual soil, clinosol (3), silty clay (4), it is characterized in that: described geomembrane (2) is built in the middle of dam body (1), residual soil, clinosol (3) are laid on geomembrane earth rockfill dam with central core left and right width, compaction in layers.

2. geomembrane core-wall pond on a hill earth and rockfill dam as claimed in claim 1; it is characterized in that: described silty clay (4) thickness is greater than 20cm; be laid on geomembrane (2) left and right, protection geomembrane (2) is not punctured by residual soil, clinosol (3) corner angle at rock fill dam construction, run duration.