Computer · Tunnel Engineering
निम्नलिखित में से कौन सी विधि सुरंग बनाने की विधियों (tunneling methods) की एक मान्यता प्राप्त श्रेणी नहीं है?
- 1रिंग ड्रिलिंग विधि (Ring drilling method)
- 2प्रेशर एंड पंप विधि (Pressure and pump method)✓
- 3साइड ड्रिफ्ट विधि (Side drift method)
- 4ग्रूव विधि (Groove method)
सही उत्तर देखें
प्रेशर एंड पंप विधि (Pressure and pump method)
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