Lithology identification based mechanical-hydraulic combined rock breaking TBM real-time tunneling method

A technology of lithology identification and machinery, which is applied in the direction of earthwork drilling, mining equipment, tunnels, etc., can solve the problems of TBM energy consumption increase, real-time adjustment, and excessive change is difficult to achieve, and achieve good cooling and anti-wear effects. The effect of solving engineering cost and reducing construction energy consumption

Active Publication Date: 2019-10-11
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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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, T

Method used

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  • Lithology identification based mechanical-hydraulic combined rock breaking TBM real-time tunneling method
  • Lithology identification based mechanical-hydraulic combined rock breaking TBM real-time tunneling method
  • Lithology identification based mechanical-hydraulic combined rock breaking TBM real-time tunneling method

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Example Embodiment

[0186] Example 1

[0187] Now, taking a white sandstone sample with a size of 150mm×150mm×100mm as an example, the penetration test is carried out on the white sandstone sample (TBM hob breaks rock mainly by normal force);

[0188] The penetration test of the white sandstone sample is carried out by using the existing mechanical hob, and the maximum force required to destroy the white sandstone sample reaches 140KN;

[0189] The penetration test of the white sandstone sample is carried out by using the mechanical-hydraulic combined rock breaking TBM real-time excavation method based on lithology identification according to the present invention, and the hob penetration test is carried out after the white sandstone sample is pre-grooved by water jet treatment , the maximum force required to break the white sandstone sample is only 40KN, the rock breaking force is reduced by more than 70%, and the white sandstone sample after the water jet pre-grooving treatment has a shorter ti...

Example Embodiment

[0191] Example 2

[0192] The present invention is now described in detail by taking the application of the present invention to the tunnel construction of Metro Line 2 in a certain place as an example, which also has a guiding role for the application of the present invention to the tunnel construction and underground engineering construction in other regions.

[0193] The construction of a tunnel of a certain section of subway Line 2 in a certain place using the combined rock-breaking TBM complex stratum driving method for realizing three-dimensional force detection according to the present invention includes the following steps (such as Figure 14 shown):

[0194] Firstly, a sampling device is used to obtain the rock samples of the tunnel in the waiting section of Metro Line 2 in a certain place. The waiting section of Metro Line 2 mainly includes three types of rocks (complex strata: rock types A, B, and C, respectively, such as Figure 12 shown);

[0195] According to the...

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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. ...

Claims

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Application Information

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IPC IPC(8): E21D9/087E21D9/093E21D9/11
CPCE21D9/0642E21D9/087E21D9/093E21D9/1066E21D9/108E21D9/11
Inventor 徐福通卢景景周辉张传庆邱浩权程志耀肖建成
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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