A hard rock roadway excavation method integrating drilling, water exploration and milling

Abstract

The invention discloses a hard rock roadway tunneling method capable of integrating drilling, water detecting and milling. The hard rock roadway tunneling method capable of integrating the drilling, the water detecting and the milling includes the steps: arranging a milling tunneling machine on a tunneling working face, installing a movable mechanical arm on the milling tunneling machine, and installing an integrated drilling machine at the front end of the movable mechanical arm; before using the milling tunneling machine to mill a hard rock body, using the movable mechanical arm for adjusting space positions and postures of the integrated drilling machine so as to enable the integrated drilling machine to drill several long straight deep holes in a part of the hard rock body for detecting water; on the premise of confirming that no water burst dangerous situation exists, filling the long straight deep holes of the rock body with an appropriate amount of explosive for deep hole blasting, and forming large diameter deep holes so as to enabling disc cutters to conveniently penetrate into a certain depth in the rock body; and finally using the milling tunneling machine for milling and smashing the hard rock body. The hard rock roadway tunneling method capable of integrating the drilling, the water detecting and the milling uses the disc cutters for milling and smashing the hard rock body on the basis of fully utilizing the theory that rock is low in tensile strength, is strong in rock breaking ability and high in efficiency, and has an advanced water detecting function.

Description

technical field [0001] The invention belongs to the technical field of coal mining, and relates to roadway rock mass excavation technology, in particular to a hard rock roadway excavation method integrating drilling, water exploration and milling. Background technique [0002] In 2018, the "BP World Energy Statistical Yearbook" pointed out that China is still the world's largest energy consumer, accounting for 23.2% of global consumption and 33.6% of global net growth; coal resource consumption accounts for 60.4% of total consumption. For a long period of time, it has an irreplaceable position as the main energy source in our country. With the continuous increase of our country's demand for coal energy, the imbalance of mining ratio due to the difficulty of rock roadway excavation has become the main reason restricting my country's coal mining. According to incomplete statistics, my country's coal mines have an average annual excavation roadway of 3,000 kilometers. Due to f...

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Problems solved by technology

[0003] In the current roadway excavation, mechanical cutting, impact and impact-cutting are the three most commonly used methods, but the traditional mechanical cutting tools are severely worn and have a low service life, so they are mainly used for cutting and breaking coal rocks with a Platinum hardness coefficient f≤8 ;Mechanical impact can break most of the coal and rock, but when working in hard coal and rock (f>15), there are problems such as serious wear and shedding of the button teeth, low rock breaking efficiency, and large amount of dust; although the impact-cutting composite rock can be crushed in a certain To a certain extent, it can overcome the problems of high hardness and poor drillability of rock mass in deep and complex formations, but there are still problems such as serious failure of mechanical tools, resulting in poor mechanical rock breaking ability

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