What Are The Advantages of Rotary Drilling RIGS?

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  Multi-function machine, to achieve a variety of drilling methods. In foreign countries, the design of large pile holes and basic drilling RIGS makes full use of hydraulic transmission technology, adopts modular combination design method, and realizes multi-purpose of one machine under the condition of constant host, which meets the different construction methods of large adaptable construction machinery. In China, the equipment that uses a short shaft bit or drill bit for dry drilling or non-circulating mud drilling technology to drill the pile hole is called a rotary drilling rig. In fact, it is a large engineering drill that can adapt to different construction methods, in addition to rotary drilling can also be used for casing or full casing drilling, underground diaphragm wall grab construction underground diaphragm wall, double power head cutting pile wall construction, long auger (CFA method) and many other machines.

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  The equipment has advanced performance, high degree of automation, low labor intensity. Rotary drilling rig is a crawler type fully hydraulic self-propelled drilling rig, equipped with a fully hydraulic system, some equipped with advanced computer operating system. In order to ensure the excellent performance of rotary drilling RIGS, most rotary drilling rig manufacturers purchase parts worldwide, such as Caterpillar (CAT) chassis, German hydraulic system 0. 01776 Japanese electric appliances, etc., which can extend the overall life of the rotary drilling rig, does not affect the use of components caused by damage to the rotary drilling rig machine, electric, liquid integration is highly concentrated, compact structure, flexible operation, mechanization, high degree of automation, automatic movement in the construction site, self-supporting mast, mobile, to the hole location convenient, fast. The use of telescopic drill pipe saves manpower and time, increases the drill pipe, has short auxiliary time and high time utilization rate.

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  High drilling efficiency, rotary drilling rig can be equipped with different drill bits according to formation conditions, long drill can be used for clay layer, speed up drilling; For sandstone with large sandstone content, short drilling with mud retaining wall can be used to control drilling rate; Individual stones, boulders and hard rock formations can be replaced with long or short auger bits, loosened, and then replaced with drill tubes to continue drilling. Compared with conventional drilling RIGS, rotary drilling RIGS have large torque and can be automatically adjusted according to the formation. High pressure drill bit, easy to control. At the same time, because the rotary drilling bit extracts the rock directly from the hole, the drilling speed is very high. Under normal circumstances, the drilling rate of sand and clay can reach 10m/h, and the drilling rate of clay can reach 4-6m/h, which is 3-5 times that of ordinary rotary drilling, and L23 is even higher.

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  The pile quality is good, the rotary drilling hole is small to the ground, the mud wall is thin, the hole wall is rough L23, which is conducive to increasing the side friction resistance of the pile and ensuring the bearing capacity of the pile foundation. With less sediment at the bottom of the hole, it is easy to clean the hole and improve the bearing capacity of pile end.

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  Low environmental pollution, rotary drilling rig dry or no circulation mud drilling, the mud used is only l / 10-1/20t31 positive and negative circulation drilling. Therefore, the construction site is clean and tidy, causing little pollution to the environment. At the same time, the rotary drilling rig has low vibration and low noise.

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