Milling Mall Construction Method Case Study: Onjigawa East Drainage Area Section 14 Sewer Construction
All-rounder in construction work! A case study of cutting H-beams in two locations.
This introduces the construction achievements of the Heisei 24 fiscal year Onjigawa East Drainage District Section 14 sewer construction. At this site, it was believed that an H-beam (H-300) was located approximately 5.5 meters from the start of the thrust pipe section. The H-beam, which was an obstacle, was cut diagonally, and after passing through, a second H-beam was similarly cut diagonally about 4 meters later, after which normal excavation was carried out. As a result, two H-beams (H-300) were cut, and the discharge of metal fragments was confirmed. 【Construction Case】 ■ Project Name: Heisei 24 Fiscal Year Onjigawa East Drainage District Section 14 Sewer Construction ■ Client: Yao City, Osaka Prefecture ■ Contractor: Bun-Iwakumi Co., Ltd. ■ Pipe Diameter: 1000 ■ Thrust Length: 229.25m (45R, 70R, 100R×2, 200R 5 curves) ■ Soil Type: Sandy soil and clayey soil ■ N Value/Gravel Ratio/Maximum Gravel Diameter: N=4-35 G=0% φmax=57mm ■ Construction Period: Daytime construction (6h) for 3 months (2015.01 to 2015.3) ■ Type of Obstacle: H-beam H-300, 2 locations *For more details, please refer to the PDF document or feel free to contact us.
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【Milling Mall Method: Four Special Functions】 ◎ Exploration: Detecting metal obstacles ahead while advancing the excavation ◎ Improvement: Ground improvement from within the excavator before and after the obstacles ◎ Cutting: Crushing and discharging metal obstacles ◎ Guidance: Guiding the excavator to the designated position of the vertical pile *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Yasuda Engineering Co., Ltd. has been a specialized company in public sewer construction, contributing to the environmental development of the local community since its establishment in 1975. We have pursued sound management and advanced technical capabilities, continuing to make steady progress. In 2001, we acquired the international standard "ISO9001" and expanded into the field of general civil engineering. We aim to be a corporate group capable of continuous innovation as a comprehensive construction company, including building construction. "Honing our technology with rich sensibility, we evaluate from a fair perspective to enhance the vitality of the company in order to meet our customers' needs." This is the management policy of Yasuda Engineering Co., Ltd. We, Yasuda Engineering Co., Ltd., are committed to uniting all employees to refine our technical skills and create a new future.
