茶筒外文翻译
阴阳师跳跳哥哥
Rapid construction of the earth-rock dam
盆景山
Abstract : In recent decades, the soil core rockfill dam has gradually become the world's construction of the high dam-one of the mainstream, With the new earth and the huge investments in machinery and construction technology of filling a higher level, Meanwhile dams in-depth testing, greatly expanding the earth-rock dam scope of the materials and the u of materials for model for more extensive earth-rock dam will provide favorable conditions to change the long-standing earth-rock dam with a long construction period, Filling the lack of low intensity, and further accelerate the progress of the construction, Filling in ensuring construction quality and safe operation under the premi to explore the rapid construction of earth-rock dams it is very necessary thing.
Key words : earth-rock dam Rapid construction Construction氢氧化钙的俗名
1 Overview
Also known as the earth-rock dam dam local materials, the necessary soil in situ stone mining in general, but can also make full u of the excavated material. having to basic requirements, low deformation bad on the character, filling construction, and can be divided into RCC-grade. Fill-rockfill dam, directional blasting rockfill dam, the hydraulic fill dams, hydro-filled dam and masonry dam in different ways. Parabolic which administered rockfill dam no longer, directional blasting rockfill dam late ttlement exist, not be planted within the dam prototype obrvation equipment shortage, which are rarely ud, hydraulic fill dams, Fill the water main in a special area of the lower dam height of the small and medium projects, the masonry dam strictly speaking belongs masonry dam category, At prent, the extensive u of thin ctions and the hierarchical compaction roller compacted earth-rock dam.
非独立核算蒋碧云2 The need for rapid construction
With the dam construction technology, concrete gravity dam dam the technology continues to improve, while the rubber dam and other new dam-constant u, there is a tr
aditional earth-rock dam filling a large quantity of a long time to build the shortcomings become extremely prominent, how to fully exploit the technology itlf earth-rock dam low, right foundation adaptability, full u of local materials to the traditional advantages to speed up the construction schedule, as Pa-an important option. Filling in ensuring the quality of construction and safe operation of the rapid construction premi is that the parties are concerned.
2.1 Bad on the uncertainty, the need to accelerate the progress of measures
脸颊祛斑With the hydropower development progress in basic bad place to build a large earth-rock dams, In order to meet the capacity and infrastructure foundation impervious to the needs, often bad on the completion of treatment can only be reclaimed after construction, however, foundation of a more complicated, especially in deep-cover construction projects, infrastructure projects are large, unpredictable factors, often need cutoff Vibroflotation, curtain grouting, grouting consolidation of the foundation for the integrated treatment, handling difficult and complex examination, Bad on the number of
projects, foundation treatment completion and handover of face time is often more work plan by the time lag. Filling started causing delay and the next gate or the completion of water storage often not be adjusted, resulting in an effective filling time, Construction units have had to resort to quick construction of measures will be scheduled according to the contract (or even ahead of) completion of the project.
2.2 Hydro-meteorological, filling intensity of the propod new standards
earth-rock dam of the hydro-meteorological factors are extremely nsitive and in the rainy ason, soil moisture greatly influenced, directly restricts dam reclamation, construction intensity will be affected; winter, the soil on the cold, and if it does not take active measures is impossible to filling and filling winter rainy ason, there is a high input, low output of the predicament, Construction units are often reluctant to assume, therefore, take full advantage of filling the "golden ason," try to avoid winter construction of the rainy ason (or reduce the amount of filling winter rainy ason), the construction unit is the first choice of the relative, the "golden ason," filling the quantity
of work is often very substantial. Rapid construction can be avoided winter rainy ason generous amount of filling the most important issue.
2.3 New Construction equipment and materials massive expansion of the scope of application is the basis for rapid construction
With the improvement in the degree of mechanization, large capacity of earth and equipment ud in construction, improved ergonomics, thus laid for the rapid construction of the necessary material foundation for the formation of materials to expand the scope of application. the original dam material unsuitable materials can also be ud as filling material, this rapid filling of the earth-rock dam with a new pillar.
3 Field data mining
Yard of the earth-rock dam importance is lf-evident, it is also most likely to affect the smooth filling of the dam weakness, according to engineering practice. Generally, the material yard depth of geological exploration work is far less dam, especially the largest v
olume filling of rockfills. Several exploratory often alone or topographic survey conducted geological description of the venue, and changes in the tender documents is a great possibility, or geological conditions undergone major changes. tender documents into uful information uless information, or mining area is smaller, to create large-scale mining (or stairs mining), is not conducive to large-scale mining machinery. can directly control dam Regular filling, grading sound, but also can affect the dam fast filling the key In impermeable soil, the water level of the dam could also become the key to rapid filling, therefore, sound and carefully reviewed for yard work and rehabilitation investigation it is particularly important to do a good job yard rechecking and rerve calculation, be aware of. If tho conditions for the best in the dam filling part of the former rerves expected to peak lowering finished Pinggu.
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