Real-time excavation method of mechanical-hydraulic combined rock breaking tbm based on lithology identification

Abstract

The invention discloses a lithology identification based mechanical-hydraulic combined rock breaking TBM real-time tunneling method. The method comprises the following steps that mechanical-hydrauliccombined rock breaking cutterhead TBM construction prepares are made; construction is started; TBM cutterhead propulsion is carried out; a mechanical cutter pushes and presses the face; a module detection hobbing cutter device applies detection pushing force; cutter laser ranging and timing and sensor lithology index feedback are carried out; a TBM rear end control processor processes information;a TBM cutterhead control center makes responses; a hydraulic cutting hobbing cutter acquires and adjusts parameters; and a TBM cutterhead breaks rock. The method has the advantages of being energy-saving, efficient, high in rock breaking efficiency and small in cutterhead consumption.

Description

technical field [0001] The invention relates to the field of tunnels and underground engineering, in particular to the field of TBM tunnel construction under complex geological conditions. Specifically it is a TBM rock breaking technology. More specifically, it is a mechanical-hydraulic combined rock-breaking TBM real-time tunneling method based on lithology identification. Background technique [0002] With the wide application of full-face rock boring machines in tunnel construction projects such as water conservancy projects, subway projects, and traffic projects, higher requirements are placed on the performance of TBM tunneling devices. In recent years, many scientific researchers have started the research on combined rock breaking TBM on the basis of traditional TBM mechanical rock breaking. [0003] Appropriate penetration should form the largest rock-breaking range with the minimum energy consumption and mechanism wear under the condition of a certain hob spacing. ...

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Problems solved by technology

[0006] Chinese patent number: CN105736006A, the patent name is "High-pressure water jet full-section rock tunneling machine cutter head design method", the inventors Huo Junzhou, Zhu Dong, etc. changed the shape of the traditional circular cutter head and adopted two cross-shaped spoke layouts , through the impact of the water jet on the four spokes and the rotary extrusion of the cutter to break the rock, which reduces the energy consumption of rock breaking; but it changes the overall structure of the cutter head greatly, and the degree of industrial realization is not high

[0007] Although numerous mechanical-hydraulic combined rock-breaking new TBMs have been researched and designed one after another, TBM rock-breaking is still faced with high energy consumption, excessively changing the shape of the existing TBM cutter head is difficult to achieve under complex construction conditions, and the rock-breaking efficiency remains to be seen. The problem of further optimization

At present, the existing TBMs and the TBMs under research all carry out construction operations under a certain working condition, which cannot be adjusted in real time according to the actual mechanical properties of the excavated strata during the construction process. The problem of "big horses and small carts" often occurs, resulting in TBMs that cannot Consumption increases, and the cost of tunnel construction projects increases

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