A method for estimating the weight and wear of constant-section disc hobs for hard rock tunnel boring machines
A technology of tunnel boring machine and disc hob, which is applied in the directions of instrument, design optimization/simulation, calculation, etc., can solve problems such as tool wear, construction failure, and reduction of driving efficiency
Active Publication Date: 2019-06-21
MILITARY TRANSPORTATION UNIV PLA
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Problems solved by technology
During the construction process, the high-strength and high-hardness rock makes the problem of tool wear very serious. If it cannot be detected in time, it will cause the wear of the cutter head, resulting in construction failures, greatly reducing the excavation efficiency, increasing the construction cost, and disturbing the construction safety.
However, in the normal tunneling process of hard rock TBM, the harsh underground construction environment makes the rock breaking process of the disc hob extremely complicated and invisible, and there is still a lack of effective technical means to directly detect the wear of the disc hob
Method used
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[0028] Below, the substantive features and advantages of the present invention will be further described in conjunction with examples, but the present invention is not limited to the listed examples.
[0029] Below, combine figure 1 The schematic diagram of the installation of the disc-shaped hob on the TBM cutter head (the radius of the cutter head is R=2885mm) is shown, and how to estimate the weight and wear of the constant-section disc-shaped hob of the hard rock tunnel boring machine in real time according to the present invention is described in detail as follows.
[0030] figure 1 Among them, there are 42 cutter position numbers on the cutter head, which are arranged sequentially from the center of the cutter head to the outer edge of the cutter head. Among them, four double-edged disc-shaped hobs are installed on positions 1 to 8 near the center of the cutter head, and the rest A single-edged disc hob is installed on the knife position; No. 9-29 tool positions are ins...
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The invention relates to a method for estimating the weight abrasion loss of a constant-section disc cutter of a hard-rock tunneling machine. The method comprises the steps of establishing a mutual relation formula among the weight abrasion loss of constant-section disc cutters mounted on different mounting positions of a cutter disc, a rock abrasiveness index CAI, rock material mechanical parameters, a normal thrust load of the disc cutter and the actual motion distance of the disc cutter, and calculating the weight abrasion loss of the constant-section disc cutters according to the mutual relation formula. According to the method, the abrasion conditions of the constant-section disc cutters mounted on the different mounting positions of the cutter disc can be estimated in real time, thereby providing reference to the judgment and control of the abrasion of the disc cutters in hard-rock TBM construction.
Description
technical field [0001] The invention belongs to the technical field of tunneling equipment construction, and in particular relates to a method for estimating the weight and wear amount of a disc-shaped hob with a constant section of a hard rock tunnel boring machine. Background technique [0002] Hard rock tunnel boring machine (TBM) is a large-scale high-tech construction equipment that uses cutters to break rocks and form rock tunnels by rotating the cutter head. The constant section (CCS) disc hob is currently the most widely used tool on hard rock TBMs with the highest rock breaking efficiency, and it is also the most consumed excavation component. During the construction process, the high-strength and high-hardness rock makes the problem of tool wear very serious. If it cannot be detected in time, it will cause the wear of the cutter head, resulting in construction failure, greatly reducing the excavation efficiency, increasing the construction cost, and disturbing the ...
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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 王立辉张茜亢一澜赵祥君侯振德蔡宗熙
Owner MILITARY TRANSPORTATION UNIV PLA