Tunnel construction method for breaking rocks by using high-pressure water

Abstract

The invention provides a tunnel construction method for breaking rocks by using high-pressure water. The tunnel construction method comprises the following steps that 1, a tunnel section is designed, and a movement track of a jet flow assembly and an arrangement position of a vibration impactor are planned according to the shape of the tunnel section; 2, outline excavation is carried out on an actual tunnel according to the shape of the tunnel section; 3, the actual section shape of the tunnel is scanned, and the actual section shape is compared with the section shape of the tunnel for finishing; 4, a water cutting groove with a set shape is formed in the tunnel face of the actual tunnel through the jet flow assembly; and 5, rock crushing operation is carried out on the tunnel face through the vibration impactor. The tunnel construction method for breaking rocks by using the high-pressure water has the beneficial effects that rock breaking is completed through water jet impact and crushing of the vibration impactor, the tunnel excavation purpose is achieved, the metal tool rock breaking mode of a traditional heading machine is abandoned, the problem that abnormal damage is prone to occurring when the metal tool of the heading machine cuts rock is fundamentally solved, and the cutter cost can be saved.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a tunnel construction method using high-pressure water to break rocks. Background technique [0002] The traditional drilling and blasting method is suitable for a wide range of geology, but the construction efficiency is slow, the work intensity of the construction personnel is high, the working environment is harsh, causing serious environmental pollution and other problems, and the construction process is noisy, and it is not suitable for the construction of urban subways; [0003] Shield construction method, TBM construction method and cantilever tunnel boring machine construction method are all tunnel construction methods developed in recent years. Generally, metal tools (hobs, scrapers, picks, etc.) are used for rock breaking work. For rock formations with general strength (within 100MPA) its rock-breaking efficiency is acceptable, but when it encounters boulders and hard...

AI Technical Summary

Problems solved by technology

[0002]The traditional drilling and blasting method is suitable for a wide range of geology, but the construction efficiency is slow, the work intensity of the construction personnel is high, the working environment is harsh, causing serious problems such as environmental pollution, and the construction process is noisy. Bigger is not suitable for the construction of urban subways;

[0003]The shield construction method, the TBM construction method and the cantilever tunnel boring machine construction method are all tunnel construction methods developed in recent years. Metal tools (hobs, scrapers, Picks, etc.) for rock-breaking work, the rock-breaking efficiency is acceptable for rock formations with general strength (within 100MPA), but when encountering boulders and hard rocks during the excavation process, the rock-breaking efficiency will decrease, and the tool will wear abnormally And the increase of frequency of replacement will bring about the reduction of shield tunneling efficiency and the increase of tunneling cost

At the same time, when excavating seriously uneven geology such as softness at the top and hardness at the bottom, uneven hardness and softness, traditional metal tools are prone to abnormal damage;

[0004]The traditional shield construction method has low flexibility and adaptability to the shape of the tunnel section, and the utilization rate of the excavated tunnel is low, resulting in a waste of resources

Moreover, the traditional shield manufacturing cost is high, resulting in a substantial increase in the construction cost of the tunnel

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