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company news about Tysim KR80A Small rotary drilling rig to assist Haikou underground integrated pipe corridor construction

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Tysim KR80A Small rotary drilling rig to assist Haikou underground integrated pipe corridor construction
Latest company news about Tysim KR80A Small rotary drilling rig to assist Haikou underground integrated pipe corridor construction

Tysim KR80A small rotary drilling rig Construction has been for 7 months in HaiNan . Customers are very satisfied with its efficient construction, stable performance and flexible manipulation. At Haikou underground integrated pipe corridor site, there are many large and medium rotary drilling rig of other companies. Our KR80A is with them on the same platform. In the construction efficiency, our KR80A is comparable to them. But in the fuel economy, control flexibility and mobility KR80A is better than theirs. At this site, the construction strata are mainly clay and sandy soil. In addition, the groundwater level is a little high. The pile diameter is 800mm, and the pile depth is 21.5m. The average finished hole time about 1 hour.

 

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KR80A small rotary drilling rig is under construction

 

The construction method uses the static mud retaining wall to drill. In order to prevent collapse hole from the pile foundation, please clear the hole before pouring concrete. For this, the construction efficiency is high, and finishing the hole fast. The mud pool is set up in the site (sedimentation tank and mud storage pool with slurry), the mud pool is 1.5~2.0 times of borehole volume, and the ability of seepage prevention is better. The slag area is arranged beside the sedimentation tank, and the sediment adopts the excavator to be cleaned and then placed in the dregs area to ensure the circulation and storage space of the mud. The ratio of cellulose and water to the test chamber to determine the reasonable coordination ratio, high-quality mud can make drilling slag in the non-dispersed flocculation state, easy to clear, so as to maintain the mud non-dispersion, low-solid, low specific gravity, high viscosity performance, in the borehole to protect the hole wall, carry slag, cooling lubrication drill bits, improve drilling rig speed, prolong drilling rig life, ensure the quality of holes, dense concrete and other functions.

 

 

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KR80A small rotary drilling rig is under construction

 

 

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Large and medium rotary drilling rig of many other brands at the site

 

 

The drilling process of rotary drilling rig ensures that the soil slag is filled with the whole drill bucket, and one is to reduce the intangible loss of mud, the other one is improving the efficiency of the slag removal. The speed of drilling bucket in the hole must be controlled, accelerate or slow down the speed of the drill bucket are not allowed. To prevent the mud slurry result the hole wall collapse caused by the hole wall erosion and negative pressure. The drilling process should also be based on the formation, pore depth changes, reasonable choice of drilling parameters, timely adjustment of mud, ensure the quality of the hole, in the case of quality assurance that drilling 21.5 meters required for about 1 hour.

 

 

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Finished Piles

 

 

 

It is reported that the Haikou underground integrated pipe corridor project is the first public hanging network bidding for the city underground integrated corridor engineering. The Urban underground integrated pipe corridor is the practical exploration to promote green development, which is a important measure to make full use of underground space, improve the comprehensive carrying capacity of the city and improve the habitat environment. The construction content relates to the new underground integrated pipe corridor, the monitoring center and the supporting construction of power supply system, monitoring and alarm systems, equipment monitoring system, security system, ventilation system, lighting system, fire system, drainage system and marking system and other ancillary projects.

Pub Time : 2017-08-22 14:27:12 >> News list
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