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基建工程为什么选择旋挖钻机施工?

发表日期:2019-12-07 14:18 文章编辑:admin 所属栏目:旋挖钻机新闻

 施工靠底部带有活门的筒式钻头回转破碎岩土并直接将其装入钻斗内提升运至地面无需将岩土搅碎靠泥浆返出孔外平均每分钟进尺可达50cm 左右。施工效率在适合的地层同比钻、冲孔桩机可提高5~6 倍。

( 2) 施工精度比较高。施工过程对桩深度、垂直度、钻压、钻筒内装土容量等均可以通过机身电脑控制。

( 3) 噪声小。施工的噪声主要来自机身发动机的声音其余部件几乎没有摩擦声特别适合在市区或居民区使用。

4 有利于环保。旋挖桩机施工泥浆用量比较少, 施工过程中泥浆的主要作用在于增加孔壁的稳定性, 甚至在土层稳定性比较好的区域可以使用清水代替泥浆钻孔施工, 大大减少了泥浆的排放, 对周围环境的影响比较小, 同时节省了泥浆外运的成本。


( 5) 可自行行走, 移机方便。

只要场地承载力能满足旋挖桩机自重要求其本身靠履带可以自行移动, 无需其他机械配合。

( 6) 机械化程度比较高。施工过程不需要人工进行钻杆的拆除和组装, 无需进行泥浆清渣处理等, 可降低工人的劳动强度, 同时节约人力资源。

( 7) 

无需提供动力电源。

目前市场上使用的都采用机身柴油发动机提供动力对施工场地没有用电情况下, 尤其适用, 同时也省去对电缆的拖运布设和防护安全性相对比较高。

( 8) 同条件下, 单桩承载力比钻孔灌注桩高。由于靠筒底角刃切土成孔, 成孔后孔壁比较粗糙同钻孔桩比较孔壁几乎没有泥浆的涂抹作用, 成桩后桩体与土体的结合程度比较高相对而言单桩承载力要高。

(9)  适用地层广泛。如果在旋挖桩机施工过程进行相应的技术控制, 由于旋挖桩机配置钻头的多样性旋挖桩机可以适用各种地层, 在同一个桩施工过程可以全部由旋挖桩机完成, 不需要选用其他机械配合成孔。

( 10) 易于管理。由于旋挖桩机自身特点, 同比钻、冲孔桩施工过程中所需机械和人大大减少同时用电要求不高, 从管理角度来讲, 易于管理和节省管理成本。

(11)  价格低廉,投资成本低 回报快

由于近年来产品的问世,大大降低了基础施工中钻进设备的购买成本。不超百万的设备纷纷推出,有的甚至投资十几万元,就可以拥有一套属于自己的施工设备,轻松当老板.

During the construction, the barrel bit with valve at the bottom is used to break the rock and soil, which is directly loaded into the drill bucket and lifted to the ground. There is no need to mix the rock and soil and return it to the outside of the hole by mud. The average footage per minute can reach about 50cm. The construction efficiency can be increased 5-6 times compared with that of drilling and punching pile machine in the suitable stratum.

(2) the construction accuracy is relatively high. During the construction process, the pile depth, verticality, WOB and soil capacity in the drill barrel can be controlled by the computer.

(3) low noise. The noise of construction mainly comes from the sound of fuselage engine, and almost no friction sound of other components is particularly suitable for use in urban areas or residential areas.

(4) it is conducive to environmental protection. The amount of mud used in the construction of rotary pile digger is relatively small. The main function of mud in the construction process is to increase the stability of the hole wall. Even in areas with good soil stability, clear water can be used to replace mud drilling construction, which greatly reduces the discharge of mud, has little impact on the surrounding environment, and saves the cost of mud transportation.

(5) it can walk on its own and is convenient to move.

As long as the bearing capacity of the site can meet the self weight requirements of the rotary pile digger, it can move by itself on the track without any other mechanical cooperation.

(6) high degree of mechanization. In the construction process, it is not necessary to dismantle and assemble the drill pipe manually, and it is not necessary to carry out mud slagging treatment, etc., which can reduce the labor intensity of workers and save human resources at the same time.

(7No power supply is required.

At present, the fuselage diesel engine is used in the market to provide power, which is especially suitable for the construction site without electricity. At the same time, the hauling layout and protection of cables are also omitted, so the safety is relatively high.

(8) under the same conditions, the bearing capacity of single pile is higher than that of bored pile. As the hole is formed by cutting the soil at the bottom of the barrel, the hole wall is relatively rough after the hole is formed. Compared with the bored pile, the hole wall has almost no mud coating effect. After the pile is formed, the combination degree of the pile and the soil is relatively high, and the bearing capacity of a single pile is relatively high.

(9) it is applicable to a wide range of strata. If the corresponding technical control is carried out in the construction process of the rotary pile digger, the rotary pile digger can be applied to various strata due to the diversity of bit configuration of the rotary pile digger, and can be completed by the rotary pile digger in the same pile construction process, without the need to use other machines to cooperate to form holes.

(10) easy to manage. Due to the characteristics of the rotary pile digger, the machinery and personnel required in the construction process of drilling and punching piles are greatly reduced compared with the same period of last year, and the requirements for power consumption are not high. From the perspective of management, it is easy to manage and save management costs.

(11) low price, low investment cost and fast return

In recent years, the appearance of products has greatly reduced the purchase cost of drilling equipment in foundation construction. Not more than a million equipment have been launched, some even invest more than 100000 yuan, you can have a set of their own construction equipment, easy to be the boss




文章链接:http://www.ershoubeng.com/a/wajizixun/wajixinwen/20191206/1354.html
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