TBM built in China for Indian project

A TBM built in China will be used for an Indian project.
By MJ Woof April 29, 2020 Read time: 2 mins
CRCHI is supplying a massive TBM for the Mumbai Coastal Road project in India - image © courtesy of CRCHI

A large diameter tunnel boring machine (TBM) has been built in China for a project in India. Manufacturer CRCHI has constructed the TBM at its main facility in Changsha, China. The TBM will be used to help construct a tunnel stretch for the Mumbai Coastal Road Project.

The TBM will be shipped from Shanghai to Mumbai for the coastal road project. Featuring an excavation diameter of 12.2m, this Slurry TBM is 80m long and weighs 2,300tonnes. It has an installed capacity of 7,280kW and a gradeability of 5%. It will be the largest diameter TBM ever used in India. 

The Mumbai Coastal Road Project is a key project for Mumbai and will measure 29.2km in length. The road will connect Marine drive to Kandivli. The CRCHI Slurry TBM will be used to drive a 1.92km tunnel comprising part of the route.

The tunnel construction work will have to deal with complex geological conditions that require excavation in deep overburden. The tunnel drive will pass through a compound stratum of basalt, breccia and shale, with the maximum uniaxial compressive strength up to 200MPa.

To solve the challenges, CRCHI Slurry TBM is designed with a mixed cutter head with eight spokes and eight panels, which will enable the machine to bore in the complicated strata for a long distance. To solve the problems such as mudcakes forming on the cutterhead and slurry discharge blocking, the TBM is fitted with a big-diameter slurry feeding port and several slurry flushing lines to increase the flow rate of slurry. In addition, 508mm diameter disc cutters are fitted to the TBM to improve machine’s rock breaking capacity and prolong its lifespan.  

In addition, this CRCHI Slurry TBM benefits from innovative features, such as a dual-chamber indirect slurry control system, a dual-circuit automatic pressure system, high-torque and retractable main drive, as well as a high-power slurry circulation system.

This is the 5th TBM supplied by CRCHI for projects in India.

Road Structures

For more information on companies in this article

Related Content

  • Advancing asphalt plant technology
    June 9, 2016
    Advances in asphalt plant technology were in major evidence at the bauma 2016 exhibition in Munich - Mike Woof writes One of the most apparent developments at bauma 2016 was the strong focus on asphalt plant technology. The massive physical presence of the asphalt plants could be seen from a distance, right across the showground, particularly the 50m-high machine Benninghoven had opted to exhibit. However, other plant systems from rival firms Ammann, Lintec and Marini, as well as Turkish company E-MAK, c
    Read More
  • The doors open on a record-breaking bauma China 2018
    November 22, 2018
    You can tell a lot from numbers – and this year’s bauma China exhibition is set to be a record-breaker! The exhibitor numbers represent an impressive 11% increase on the 2,958 exhibitors from 41 countries that presented their products and innovations to around 170,000 visitors at the 2016 event.
    Read More
  • India’s US$1.7 billion Mumbai Coastal Highway
    March 18, 2024
    India’s US$1.7 billion Mumbai Coastal Highway inaugurated
    Read More
  • Versatile small construction equipment
    February 9, 2012
    Smaller construction equipment offers versatile options, particularly on highway repair and maintenance projects. Patrick Smith reports. Visitors to any highway construction site across the world will see a sizeable amount of utility equipment in action carrying out a variety of tasks. Indeed, because of its smaller, more compact size, such multi-task equipment is essential when repair and maintenance projects are being carried out, particularly in urban areas where space may be limited.
    Read More

Highlighted Content