Milling Mall Method Construction Case: Onjigawa East Drainage Area Section 5 Sewer Construction
All-rounder in construction work! A case study of cutting three PC piles with a diameter of 250mm.
This document introduces the construction achievements of the 5th section of the Onjigawa East Drainage Area sewer construction for the fiscal year 2013. It is believed that there are supporting piles (PC piles φ250mm at 3 locations) for the retaining wall of the side road in the push pipe section, and furthermore, the road where the push construction is to be carried out is a major road with heavy traffic, making road regulation difficult. The construction was carried out using the milling mole method, and the PC piles φ250mm at 3 locations were cut. 【Construction Case】 ■ Project Name: Sewer Construction for the 5th Section of the Onjigawa East Drainage Area for Fiscal Year 2013 ■ Client: Yao City, Osaka Prefecture ■ Contractor: Toda Corporation & Bun-Iwa Group Joint Venture ■ Pipe Diameter: 1650 ■ Pushing Length: 325.470m (200R 1 curve) ■ Soil Type: Sandy soil and clayey soil ■ N Value/Gravel Ratio/Maximum Gravel Diameter: N=50 G=0% φmax=19mm ■ Construction Period: Night work (8h) for 5 months (2014.11 to 2015.3) ■ Type of Obstacle: PC piles φ250mm at 3 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 inside the tunneling machine before and after the obstacles ◎ 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.