湖南全省可划分为六个地貌区:湘西北山原山地区、湘西山地区、湘南丘山区、湘东山丘区、湘中丘陵区、湘北平原区。地貌按成因可分为:以流水地貌为主,占全省总面的64.76%,岩溶地貌次之,占25.97%;湖成地貌最小,仅占2.88%,水面积占6.39%。按组成物质(不含水域)分沉积岩(包括砂质岩、碳酸盐岩、红岩、第四纪松散堆积物)地貌为主,占全总总面积的57.75%;变质岩类地貌次之,占24.99%;岩浆岩类地貌,仅占8.87%。
本工程的吹填作业由布设在吹砂点的绞吸船实施,绞吸船也属非自航机械式施工设备,清淤机械工作原理是利用离心泵产生真空吸进水下泥浆进入泵体,然后由其产生的排压挤压泥浆在排泥管中流动,通过输泥管将浚挖泥土排至指定的吹填区。
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Hunan province can be divided into six areas: Xiangxi Beishan Mountain landform area, Xiangxi mountain area, hill area, eastern Hunan hilly area, the hilly area of central Hunan, Hunan plain. The landform can be divided into 6.39% parts according to the cause: the water flowing landforms, accounting for 64.76% of the total surface of the province, followed by karst landforms, accounting for 25.97%; the smallest geomorphic features of the lake, accounting for only 2.88%, and the water area accounted for. According to the composition of the material (without water) into sedimentary rocks (including Sandy Rock, carbonate rock, rock, Quaternary sediments) landform, Taiwan accounted for 57.75% of the total area; the landform of metamorphic rocks, accounted for 24.99%; magmatite types of landforms, accounted for only 8.87%.
The filling operation is carried out by the engineering layout in sand point is non self pumping, pumping air mechanical construction equipment, dredging machinery working principle is to produce a vacuum sucked into the water under the mud into the pump body by centrifugal pump, then the pressure in the mud slurry extrusion tube, through the tube the reclamation area to the specified row soil dredging mud.
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