Hard rock body non-blasting tunneling device

Abstract

The invention discloses a hard rock body non-blasting tunneling device. The device comprises a stepped drill bit, a circular hob, a power cantilever, a lifting oil cylinder, a rotary frame, a machinebody frame, a swing oil cylinder, a hydraulic system, a control console, an electric control box, a scraper machine, a walking mechanism, a shoveling device and U-shaped pins. The device is large in power, simple and compact in structure and convenient to install and detach, and the adaptability of tunneling equipment to geological conditions of a hard rock body is improved. The stepped drill bitis used for drilling in advance so that the strength of the hard rock body can be reduced and a free surface can be formed, and the difficulty of a mechanical cutter in crushing the hard rock body isreduced; high-efficiency extrusion, stretching and crushing of the hard rock body can be achieved by using the circular hob. Drilling is conducted first for pressure relief, and then the circular hobis used for extruding, stretching and crushing the hard rock body, so that the rock breaking capacity and efficiency of the tunneling equipment are greatly improved, and the tunneling device has a promotion function on deep high geostress rock body efficient tunneling in China and even has an important social significance in sustainable development of the coal industry in China.

Description

technical field [0001] The invention relates to a tunneling device, in particular to a gunless tunneling device for hard rock mass. Background technique [0002] In 2015, the "BP World Energy Statistical Yearbook" pointed out that China is still the world's largest energy consumer, accounting for 23% of global consumption and 61% of global net growth; coal resource consumption accounts for 66.03% of total consumption, and in the future For a long period of time, it has an irreplaceable position as the main energy source in our country. The "National Medium- and Long-term Science and Technology Development Program (2006-2020)" clearly states that it is urgent to strengthen research on safe and efficient mining and utilization of coal resources, and clearly requires research on mining technology for deep and complex strata ore bodies. [0003] At present, coal mining has gradually developed into deep and complex strata, which puts forward higher requirements and new challenge...

AI Technical Summary

Problems solved by technology

Although the blasting excavation method has the characteristics of flexibility, convenience, low cost, strong adaptability, and unaffected by changes in geological conditions, it has disadvantages such as many procedures, low safety, and low excavation efficiency.

When mechanically cutting and breaking rocks, the tool wears seriously and consumes a lot. It is mainly used for cutting and breaking coal rocks with Platinum hardness coefficient f≤8; mechanical impact can break most coal rocks, but it works in hard coal rocks (f>15) There are problems such as serious wear and shedding of ball teeth, low rock breaking efficiency and large amount of dust, which greatly reduce the mechanical impact rock breaking ability, efficiency, service life and reliability of equipment. How to achieve safe and efficient crushing of hard coal rock has become a deep, Key issues and difficulties in the efficient development of coal and other ore body resources in complex strata

The circular hob of the TBM roadheader has strong rock-breaking ability and wear resistance, but because the circular hob is used to crush rocks and requires a huge thrust, the use of the TBM roadheader in the hard rock roadway of the coal mine is limited

Images