Milling Mall Method Construction Case: Drainage Main Building Installation Work Around Chijin Town
All-rounder for construction work! A case study of cutting steel sheet piles Type III at two locations!
This document introduces the construction achievements of the water supply main pipe installation project around Hanjin Town in Sasebo City, Nagasaki Prefecture. After approximately 40 meters of advancement, the first obstacle (steel sheet pile type III) was cut, followed by about 7 meters of normal pushing. Subsequently, the second obstacle (steel sheet pile type III) was cut, allowing for the remaining 15 meters to be reached through normal pushing. This project involved the installation of a water pipe, where a φ900 steel pipe was pushed through, followed by the insertion of a φ600mm ductile pipe. The obstacles (steel sheet pile type III) were used during the construction of the embankment for the Hanjin Bridge and were located on both sides of the river. 【Construction Example】 ■ Project Name: Hanjin Town Surrounding Drainage Main Pipe Installation (No. 6) ■ Client: Sasebo City Waterworks Bureau ■ Contractor: Tanimura Construction & Taniyama Construction Joint Venture ■ Pipe Diameter: 800 (φ900 steel pipe) ■ Pushing Length: 62.00m ■ Soil Type: Gravel mixed with sandy silt ■ N Value/Gravel Ratio/Maximum Gravel Diameter: N=2 G=0% φmax=52mm ■ Construction Period: 2013.11.1 to 13.11.18 (0.5 months) ■ Type of Obstacles: Two locations of steel sheet pile type III *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 inside the tunneling machine before and after the obstacle ◎ Cutting: Crushing and discharging metal obstacles ◎ Guidance: Guiding the tunneling machine 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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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.