Several of small reservoirs in the main reinforcement technique

Abstract: In this paper, the design of a small reservoir reinforcement analysis of common problems, a small reservoir reinforcement of technical issues relating to small reservoirs in danger elimination and reinforcement gives a brief summary of several technical problems.

Keywords:: small reservoirs, Research, analysis

Embankment dam slope failure for a reinforcement technique
Embankment dam slopes and other forces in the role of gravity has moved downward and outward movements. If the slope of the shear strength of the rock can withstand this trend, this slope is stable, otherwise will be unstable and landslides. Embankment landslide is the result of many factors, is a complex phenomenon of instability and failure. produce the basic factors of landslide dam, in essence, the increase of sliding force and sliding force of less than .

Sliding force and sliding force depends on the reservoir water and rain water infiltration, construction methods, construction speed, eArthquakes and other external conditions caused by the dam or the dam within the pore water pressure and the nature of dam soil, including pore water pressure on shear strength. To this end, we must first landslide exploration, geotechnical testing and observation of work in order to determine the nature of the landslide and the main reason, and set landslide reinforcement design for construction of landslide reinforced with quality inspection.

Dam dam dam fill material is made by hand, while the dam project and the slope is hidden. According to the design standards of Landslide Reinforcement shall be SDJZ13-83 <<rolled eArth dam construction specifications>> do landslide reinforced construction. landslide reinforced construction methods are: foundation and bank clearance, removal and handling of the dam safety cause hidden roots, springs, caves, rock weathering, landslides, etc., riprap solid foot slip resistance , stabilize the landslide, in stabilize the landslide landslide based on the timely processing of cracks, and training in thick, slow slope, downstream slope rubble ballast, do stick sloping filter layer and so on.

2 perfusion clay slurry dam embankment reinforcement technology
Currently, the dam grouting methods can be divided into two kinds of filling and the split type, the former refers to the weight of filling (orifice pressure is zero, which is split by the dam grouting pressure, the formation of a near vertical and continuous curtain of slurry. In fact, both methods are filling pressure grouting, but the pressure used in the size is different.

Both grouting technology, water conservancy workers in our efforts fruitful achievements have been made for the reinforcement of the dangerous dam contributed.

3, the density of the dam and foundation reinforcement technique
Dam is a dam filling the biggest risks the quality of design requirements, and the mishandling of the weak foundation, thereby increasing density of the dam and its foundation is to eliminate the most important issue of dangerous library. Improve the density of the dam and its foundation is the construction of eArth and rock dam of one of the key technologies.

For new dams, the density of the dam and foundation must be strict proof, designed to select the optimal construction reinforcement and construction work. The quality of the dam filling density of the main control, including the choice of dam materials, rolling test, RCC RCC construction method and the parameters should be strictly in accordance with the relevant specifications to ensure that the dam filling quality.


In addition to the new dam with a compacted density of the dam embankment construction method, but does not rule out the use of vibration pressing density filling construction method. The new dam reinforcement of weak foundation There are many ways to choose from, such as vibration punch tantric, drainage sand Well filling stage method, deep mixing, compaction, replacement method and chemical grouting and more.

Have dam, dam and foundation has formed a whole, if the density of the dam and its foundation have a problem, then try to use when the reinforcement method used the same approach. A lot of reinforcement in the above mentioned methods, with vibroflotation good applicability. for the dam gravel, soil material and the weak foundation soil (clay or sandy soil) can be reinforcement. Therefore, the optimum would be a method of vibration of the reinforcement.

Foundation for the clay soil, the deep mixing method is one of alternative reinforcement. Reposted elsewhere in the Research Papers Download http://www.hi138.com 4 geosynthetic reinforcement technology
With the rapid development of polymer chemical industry since the 20th century, there have been a variety of synthetic fibers, such as: poly vinyl grasp fiber, polyethylene drunk, phthalocyanine amine polymer fiber and so on. The ratio of man-made fibers with synthetic fibers superior performance, gradually accepted, practice also shows the geosynthetics is an ideal novel engineering materials.

As a new geotextile materials, geosynthetics very short duration, but the development is quite fast. At present, there have been a number of products. The main products and their main Applications are: �� geotextile is used in all synthetic geotechnical and civil engineering fiber or natural fiber made of permeable fabric, the main role in the drainage, filtration, isolation, reinforcement, erosion control and protection, etc., �� geogrid tension elements connected to the rules by the network structure, and its opening area is much larger than tension components, used in reinforced, �� Geonet as overlapping ribs to form the rules of the dense network structure, used in liquid and gas delivery, �� is relatively impermeable geomembrane polymer sheets, geotechnical and civil engineering for every section in the delivery of liquids and gases, �� geotextile mat fibers bonded into a single three-dimensional porous polymer pads, for erosion control, protection of soil pArticles, foot and the tiny fabric, �� geocell for the use of fabric, Georgia Article film gate or cross-linked into a three-dimensional cellular or spider web-like structure, used in soil erosion control and soil conservation, �� geotextile composite materials for the use of two or more of geosynthetics by artificial combination of complex, for drainage, water and cut reinforced and so on.

In short, the impermeable geomembrane performance with a very prominent, and its water seepage control project can be applied to the following aspects: �� impervious dam or vertical impervious core of the sloping wall, �� the level of pervious foundation seepage on the dam bedding and vertical cutoff wall, �� dam, sewage workers and roller compacted concrete dam dam impervious, �� impermeable lining channels, �� culvert in the blanket seepage, �� pipe tunnels and dams in the seepage, �� impervious construction cofferdam, and many works have shown that it is impervious Record works well, the economy, construction of convenient, value for promotion. Currently SL/T225 a 98 a 98 and GB50290 <<Application of geosynthetics technical specifications>> in the The inclusion of impermeable geomembrane used in the embankment of the provisions indicate that geomembrane dam in China has matured in the Application, which will this new technology and new materials in the Application in the dam to provide a good example.

In recent years, the most impervious geomembrane used in a wide range of Vertical Plastic seepage. The technology has matured and is widely used in dams and rivers, lakes impermeable embankment strengthening works. The basic principle is: first of all washed with water, bucket, or reciprocating saw slot machine in need of soil seepage out of the vertical slot, and mud protection, then the whole with the groove depth equivalent volume into the tank under the geomembrane, roll down the shaft, Expand the geomembrane, with overlapping between two adjacent connected, and finally filling both sides of the membrane, the formation of seepage curtain. backfill, the backfill in the bottom of the clay, the thickness of not less than 1m, purpose sealed to prevent seepage of water from around the lower part, and then backfill with the original earth dam materials, the same material, let it sink stable, compacted fill to the tank to continue until the geomembrane the slot, will be with the building connected impervious system shall not be exposed. in connection with the building, geomembrane should allow sufficient wealth to prevent deformation of the building pulled off geomembrane.

Vertical Plastic seepage control technology is now widely used in various sandy earth structure and foundation seepage. Their Application form can be divided into two types: one is plain reservoirs, rivers, lakes, dams seepage before, two is the foundation of the dam and the seepage conjoined. reposted elsewhere in the Research Papers Download http://www.hi138.com