Abstract:
We take coal seam occurrence conditions and general fully mechanized excavation technology as the research object, and carry out the study of 3-5 m thick coal seam cantilever tunneling machine, roadway support, straddle belt bolt drill car, permanent magnet belt drive and self-moving tail and other current domestic excavating and supporting frontier equipment. The cutting-edge equipment for excavation, support and transportation has completed the integrated design of supporting equipment for single lane rapid excavation technology, key technical parameters and innovative excavation technology. From the root cause, the problem of mutual restriction and mutual influence between ordinary comprehensive excavation and support has been solved, and the continuous parallel operation of excavation and support transportation has been initially realized. It is a revolution to ordinary comprehensive excavation technology and has increased the excavation efficiency by more than 1.5 times. The application results show that the single lane rapid excavation technology guarantees the coordinated operation and continuous excavation of supporting equipment for excavation, support and transportation. From the end of 2019 to the beginning of the second quarter of 2020, the single entry level has been increased from the original 322 m/mon to the present 485 m/mon, the effective is obvious, and it has become an important technical support for mine production succession, creating a precedent for single-lane rapid excavation technology for 10 million-ton mines in northwestern Shanxi Province.