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Boss Ji-Shenyang Metro Line 10 and other projects

  • Categories:Case
  • Time of issue:2021-08-05 09:58

(Summary description)Shenyang is a large central city in Northeast China. Located in the center of the Northeast Asian Economic Circle and the Bohai Rim Economic Circle, it has an important strategic position. With Shenyang as the center and within a radius of 150 kilometers, there are 8 major cities dominated by basic industries and processing industries, forming an urban agglomeration in central Liaoning with abundant resources, strong structural complementarity, and high technological relevance.

Boss Ji-Shenyang Metro Line 10 and other projects

(Summary description)Shenyang is a large central city in Northeast China. Located in the center of the Northeast Asian Economic Circle and the Bohai Rim Economic Circle, it has an important strategic position. With Shenyang as the center and within a radius of 150 kilometers, there are 8 major cities dominated by basic industries and processing industries, forming an urban agglomeration in central Liaoning with abundant resources, strong structural complementarity, and high technological relevance.

  • Categories:Case
  • Time of issue:2021-08-05 09:58
  • Views:
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Shenyang is a large central city in Northeast China. Located in the center of the Northeast Asian Economic Circle and the Bohai Rim Economic Circle, it has an important strategic position. With Shenyang as the center and within a radius of 150 kilometers, there are 8 major cities dominated by basic industries and processing industries, forming an urban agglomeration in central Liaoning with abundant resources, strong structural complementarity, and high technological relevance.

The macroscopic landform of Shenyang urban area is alluvial fan, and the mountain pass is in the northeast. Due to the formation of alluvial fans and the continuous changes of the Hunhe River from north to south, the formation of new geomorphological stratum covers the old stratum, and at the same time, the new stratum erodes and deposits the old stratum. In this way, the Quaternary strata in Shenyang has multiple sedimentary cycles. That is, the stratum is mainly composed of sedimentary rhythms such as silty clay, medium-coarse sand, gravel sand, round gravel, and pebbles. There can be 2-3 sedimentary cycles in different sections. Depending on the sedimentary environment, some stratum lacks a certain layer. On an urban construction site in Shenyang, we saw Ji Yongzhong who was directing the construction of his own Taixin rotary drilling rig.

 

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Ji Yongzhong was born in 1957 and his hometown is Tangshan, Hebei. He has been in his sixties. His voice has always been so loud and his personality has always been so hearty. There are currently two rotary drilling rigs, one Zhonglian 220, and the KR125A of Taixin Machinery. Before he owned his own rotary drilling rig, Boss Ji had been doing engineering-related work. Before using the rotary drilling rig, he had been using vibratory hammers and other equipment. After seeing the construction prospects of the rotary drilling rig, he ordered A Zhonglian 220. After paying off the loan for the purchase of Zhonglian 220, he was looking for a rotary drilling rig corresponding to small piles. After market research and comparison, he learned that Taixin’s rotary drilling rig was flexible in construction. After the advantages of low fuel consumption and small floor space, the contract was signed on March 25, 2013 to purchase KR125A, which was specially used for the construction of small piles in Shenyang. Zhonglian 220 has been working in Sichuan for three years since the purchase, and then went to Wuhan, Shanxi, and Tangshan for one year.

 

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Taixin Machinery's rotary drilling rig has been constructed in many places in Shenyang so far, and the feedback is good. Apart from simple maintenance and repair of wearing parts, there is basically no major maintenance.

 

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Examples of three typical construction sites are as follows:

In April 2013, the expressway set up soundproof sheet piles with a driving depth of 3-4m and a diameter of 800mm. The construction will be completed in a short period of time.

On July 19, 2013, Shenyang No. 5 construction site, piles 800mm in length, 27-33 meters in depth, a total of 220 building piles were completed in just one month. The middle rotary drilling rig repaired the regulator and filtered the oil.

On November 1, 2013, the Eton Center had a diameter of 800mm, a depth of 26.5—35m, and 200 roots. It was completed in about forty days. Five or six steel wire ropes in the middle machine were broken. The regulator had corresponding problems, and the oil was filtered more than ten times.

On April 25, 2014, Metro Line 10 Polytechnic University, 800mm in diameter, 23-29m in depth, and 420 piles were completed in two months, and there was a problem of speed reduction.

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