Frequently Asked Questions
Q
What is the daily advance of a hard rock tunnel boring machine (TBM) in complex hard rock geological conditions?
Under working conditions of around F8 and a 4m*4m cross-section, the daily advance can reach approximately 6 meters. The specific amount will depend on the working conditions, operation time, and support time.
Q
If a major malfunction causes a shutdown during equipment operation, how long will it take for your company to dispatch technical personnel to the site?
We have central warehouses in coal-producing areas. In remote areas, we use a one-person-one-machine approach. We also stock some spare parts near the construction site.
Q
Can your company customize a TBM solution for the specific geological conditions of our mine (such as high-hardness rock, steep slopes, and abundant water)?
We can customize a solution. Leveraging our experience maintaining over 2,000 tunneling machines and tens of thousands of troubleshooting data points, our company can tailor our services to the specific geological conditions of your mine (high-hardness rock, steep slopes, abundant water, etc.). We will organize our R&D, technical, and production teams to conduct a joint on-site survey and, based on the mine's production capacity requirements, customize the tunneling machine's structure, performance, and configuration. For example, we can optimize the electrical waterproofing design for waterlogged conditions, enhance the performance of the walking mechanism for steep slopes, and optimize the cutting system for high-hardness rock. Our customized solutions are perfectly suited to your mine's actual conditions, ensuring efficient and stable equipment operation. Furthermore, the customization cycle remains the same as for standard models, without incurring additional customization costs.
Q
Is the equipment difficult to operate? Will the training you provide allow our ordinary workers to quickly learn how to operate and perform basic maintenance?
The equipment requires specialized personnel to operate. Our company conducts on-site training for maintenance technicians every quarter.
Q
How much will your maintenance services cost after the warranty period? Are there long-term maintenance packages available?
Pricing varies depending on the machine model and service life. We have several long-term partner clients for reference.
Q
Does your company have any case studies of cooperation with similar mines (same geology, same production capacity)? Can you provide specific user feedback and data?
We have various case studies of cooperation with both coal and non-coal mines. For interested clients, we will send technical personnel to conduct on-site investigations and provide construction experience and solutions for similar working conditions.
Q
What are the advantages compared to blasting?
Reduced disturbance to surrounding rock, cost savings, reduced probability of geological disasters, and compliance with national initiatives, etc.
Q
What voltage does the tunneling machine use? Can it use 660V?
The standard voltage for tunneling machines is 1140V.
Q
What is your spare parts supply system like? Besides setting up spare parts warehouses on-site, can you urgently dispatch spare parts when there is a shortage in remote mines?
Yes; many of our partner projects have warehouses near the project site.
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