阅读说明：本技术 一种盾构机刀盘刀具系统及其磨损警示检测方法 (Shield tunneling machine cutter head and cutter system and abrasion warning and detecting method thereof ) 是由 张魁 刘旺旺 郑学军 周友行 于 2021-08-26 设计创作，主要内容包括：一种盾构机刀盘刀具系统及其磨损警示检测方法,包括：盾构机刀盘刀具系统及与其配合使用的刀盘刀具系统磨损警示检测方法,所述刀盘刀具系统包括刀盘主体、刀座、刀具,所述刀盘主体、刀座、刀具均含有特异性元素,所述与盾构机刀盘刀具系统配合使用的刀盘刀具系统磨损警示检测方法包括：采集盾构机掘进时产生的碴土废液,作为检测样本；检测所述检测样本,若检测样本中含有特异性元素x,则停机检修；若检测样本中不含有特异性元素x,则继续采集所述碴土废液,作为检测样本。使用时,通过在刀盘刀具系统的零部件中加入特异性元素,再检测盾构机隧道工程现场所采集的碴土废液,可高效实现所述零部件的磨损检测,减少了工作人员出仓检测次数。(A shield tunneling machine cutter head and cutter system and a wear warning and detecting method thereof comprise the following steps: the wear warning and detecting method for the cutter head and the cutter system of the shield tunneling machine comprises the following steps of: collecting waste muck liquid generated during the tunneling of the shield tunneling machine as a detection sample; detecting the detection sample, and if the detection sample contains a specific element x, stopping the machine for maintenance; and if the detection sample does not contain the specific element x, continuously collecting the muck waste liquid as the detection sample. When the detection tool is used, specific elements are added into parts of the cutter head cutter system, and then the muck waste liquid collected in the current site of the shield tunneling machine tunnel engineering is detected, so that the abrasion detection of the parts can be efficiently realized, and the number of times of detection for workers going out of a warehouse is reduced.)

1. The utility model provides a shield constructs quick-witted cutter head cutter system, includes blade disc main part, blade holder, cutter, its characterized in that has one item of following characteristic at least:

the method is characterized in that: the cutter, except that the local area on the cutting element for contacting and cutting rock soil does not contain specific elements, other areas contain specific elements;

and (2) feature: the cutter head main body contains specific elements;

and (3) feature: the tool apron contains specific elements.

2. The shield tunneling machine cutter system of claim 1, characterized by at least one of the following features:

in feature 1, only a local region of the cutting element not used for contacting and cutting the rock soil contains a specific element;

in the characteristic 2, the distance from the cutter head main body to the outer surface of the cutter head main body is more than h only on the cutter head main body₁The inner region of (3), containing a specific element;

in the characteristic 3, only the end surface on the tool apron, which is at the same side with the cutter cutting element and at the same direction with the motion track of the cutter cutting element when cutting rock soil, is larger than h₂Contains a specific element.

3. The shield tunneling machine cutter system of claim 1, wherein the specific elements are copper, tin, aluminum, magnesium.

4. The shield tunneling machine cutter head system of claim 3, wherein the specific elements contained in the different regions to be detected are different from each other.

5. The method for detecting the wear warning of the shield tunneling machine cutter head and cutter system used in cooperation with the shield tunneling machine cutter head and cutter system according to claim 1, comprising the steps of:

s1: collecting waste muck liquid generated during the tunneling of the shield tunneling machine as a detection sample;

s2: detecting the detection sample obtained in the step S1, and if the detection sample contains the specific element x, entering the step S3; if the detection sample contains the specific element x, returning to the step S1;

s3: and stopping the shield tunneling machine for maintenance.

6. The method for detecting the wear warning of the shield tunneling machine cutter head system according to claim 5, wherein S2 includes the following steps:

s2-1: calcining the waste residue soil liquid obtained in the step S3 to remove carbon elements in the waste residue soil liquid;

s2-2: adding strong acid into the calcined muck waste liquid obtained in the step S2-1, and dissolving the calcined muck waste liquid to obtain a sample solution X to be detected containing insoluble impurities Y;

s2-3: separating the sample solution X to be detected and the insoluble impurity Y obtained in the S2-2;

s2-4: detecting whether the sample solution X to be detected in the S2-3 contains the specific element X, and if the sample solution X to be detected contains the specific element X, entering the step S3; if the specific element X is not detected in the sample solution X, the process returns to step S1.

7. The method for detecting the wear warning of the shield tunneling machine cutter head cutter system according to claim 6, wherein in S1, waste muck liquid is randomly extracted every half hour to serve as a detection sample.

8. The shield tunneling machine cutter head system and the wear warning detection method thereof according to claim 7, wherein in S2-1, the calcination temperature does not exceed the range of 700 ℃, and the calcination time is 3 hours.

9. The shield tunneling machine cutterhead cutter system and the wear warning detection method thereof according to claim 6, characterized in that in S2-2, a dilute nitric acid solution is added to the calcined waste slag, and the wear state of the parts where the copper element is located is rapidly judged by observing that the solution obtained by the reaction of the dilute nitric acid solution and the copper oxide, which is formed by calcining the copper element according to claim 3, is blue.

10. The shield tunneling machine cutterhead cutter system and the wear warning detection method thereof according to claim 6, wherein in S2-4, whether the sample solution X to be detected contains the specific element X is detected by a polarization zeeman atomic absorption spectrometer, and if the detection result contains the specific element X, the step S3 is performed; if the detection result does not contain the specific element x, the process proceeds to step S1.

Technical Field

The invention relates to the technical field of tunnel boring machines and the technical field of wear detection, in particular to a shield tunneling machine cutter head cutter system and a wear warning detection method thereof.

Background

The shield machine is widely applied to large tunnel construction projects such as subways and the like due to the advantages of safe construction, environmental protection, high tunneling efficiency and the like. The shield tunneling machine cutter head and cutter system comprises a cutter head main body, a cutter seat, a cutter and the like; the cutter comprises a hobbing cutter, a cutting cutter, a pilot cutter and the like. Taking a hob as an example, the hob is an important tool for cutting rock and soil mass, and is easily worn due to direct contact with the rock and soil mass, and is particularly worn seriously when encountering environments such as sand pebbles, composite bottom layers and the like. In addition, the shield machine continuously bears larger pressure around the tunnel in the construction process, particularly the pressure around the tunnel is higher under rivers, lakes and seas, and great difficulty is brought to the replacement of cutters of the shield machine. Therefore, shield cutter changing needs to be planned in advance, and further higher requirements are provided for hob abrasion detection. At present, common hob abrasion detection methods are a warehouse opening detection method and an odor additive method, the warehouse opening detection method can directly and effectively measure the abrasion degree of the hob, but the warehouse opening detection is needed under pressure, so that the construction progress is influenced, and higher safety risk exists; the peculiar smell additive method is suitable for being applied to TBM (full face rock tunnel boring machine), and the application in the shield is influenced by the construction environment, so that the smell of the additive in a muddy water environment is not obvious, and the effect is greatly reduced. How to safely and effectively detect the wear state of the cutter system of the cutter head of the shield machine becomes a difficult problem to be solved urgently in the industry.

Disclosure of Invention

In order to solve the problem, the invention provides a shield tunneling machine cutterhead cutter system, which comprises a cutterhead main body, a cutter seat and a cutter, and is characterized by at least having the following characteristics:

the method is characterized in that: the cutter, except that the local area on the cutting element for contacting and cutting rock soil does not contain specific elements, other areas contain specific elements;

and (2) feature: the cutter head main body contains specific elements;

and (3) feature: the tool apron contains specific elements.

Preferably, in feature 1, only the local region of the cutting element not used to contact and cut the earth contains the specific element;

preferably, in the feature 2, only the cutter head body is arranged at a distance greater than h from the outer surface of the cutter head body₁The inner region of (3), containing a specific element;

preferably, in the feature 3, only the end face of the holder, which is on the same side as the cutter cutting element and is in the same direction as the movement locus of the cutter cutting element when cutting rock and soil, is larger than h₂Contains a specific element.

More preferably, the specific element can be copper, tin, aluminum or magnesium.

More preferably, the detection areas to be warned contain different specific elements.

The abnormal wear warning and detecting method for the shield machine cutter head and cutter system matched with the shield machine cutter head and cutter system is characterized by comprising the following steps of:

s1: and collecting the waste liquid of the muck generated during the tunneling of the shield tunneling machine as a detection sample.

S2: detecting the detection sample obtained in the step S1, if the detection sample contains a specific element x, indicating that critical wear occurs to a cutter head and cutter system of the shield tunneling machine, and entering a step S3; and if the specific element x is not contained in the detected sample, indicating that the shield tunneling machine cutter head cutter system does not reach the critical wear state, and returning to the step S1.

S3: and stopping the shield tunneling machine for maintenance.

Preferably, S2 includes the following substeps:

s2-1: and (4) calcining the waste muck liquid obtained in the step (S3) to remove carbon elements in the waste muck liquid.

S2-2: and (3) adding strong acid into the calcined muck waste liquid obtained in the step (S2-1), and dissolving the calcined muck waste liquid to obtain a sample solution X to be detected containing insoluble impurities Y.

S2-3: the sample solution X to be tested obtained in S2-2 is separated from the insoluble impurity Y.

S2-4: detecting whether the sample solution X to be detected in the step S2-3 contains the specific element X, if so, indicating that the shield tunneling machine cutter head cutter system reaches a critical wear state, and entering a step S3; and if the specific element X is not detected in the sample solution X to be detected, the shield tunneling machine cutter head and cutter system does not reach the critical wear state, and the step S1 is returned.

Preferably, considering that various cutter ring failure behaviors are easy to occur in the shield machine hob tunneling process, in order to prevent failure behaviors such as eccentric wear, edge breakage, fracture and the like of the shield machine hob from being undetected by workers, in S1, the muck waste liquid can be randomly extracted as a detection sample every half an hour.

Preferably, in S2-1, the waste muck liquid obtained in S3 is placed in a crucible and then calcined in a muffle furnace.

More preferably, the calcination temperature is not more than 700 ℃ and the calcination time is 3 hours in order to prevent the components in the rock powder from melting during calcination.

Preferably, in order to react the specific element in the waste calcined muck liquid with the strong acid, a sufficient amount of the strong acid is added to the waste calcined muck liquid obtained in S2-1 in S2-2 to sufficiently dissolve the waste calcined muck liquid.

Preferably, in order to rapidly separate the sample solution X to be tested from the insoluble impurities Y, S2-3, the insoluble impurities Y in the sample solution X to be tested may be removed by filtration.

Preferably, in order to rapidly detect whether the sample solution X to be detected contains the specific element X, the specific element X in S2-4 can be determined by a phenomenon in which the specific element X reacts with a strong acid.

More preferably, in order to enable the accuracy of the detection result to reach the level of mg/L and detect multiple specific elements X in different parts in a cutter head cutter system of the shield tunneling machine, whether the sample solution X to be detected contains the specific elements X or not can be detected through a polarization Zeeman atomic absorption spectrometer, if the detection result contains the specific elements X, the parts where the specific elements X are located are worn, and the step S3 is executed; if the detection result does not contain the specific element x, the process proceeds to step S1.

The shield tunneling machine cutter head and cutter system and the abrasion warning and detecting method thereof have the beneficial effects that: the abrasion state of the cutter head cutter system of the shield machine can be measured efficiently and economically through rock debris collected on the shield machine tunnel engineering site (a muck-containing site and a muck conveying mechanism), compared with the existing abrasion detection method of the cutter head cutter system of the shield machine, the method is closer to the working condition, does not need pressurized cabin opening detection, is easy to organize and implement, and greatly reduces the times of shutdown detection of the shield machine and the danger degree of taking life danger out of a warehouse for workers; the method overcomes the limitation that the effect of detecting the abrasion loss of the hob of the shield machine by the conventional peculiar smell additive method is not obvious in different tunnel construction environments, particularly muddy water construction environments. In addition, the specific elements are added to different parts of different parts such as a hob seat, a cutter shaft, an end cover and the like in a cutter head cutter system, so that the abrasion detection of the parts can be realized.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural diagram of a cutter head main body in a cutter head cutter system of a shield tunneling machine (including a hob seat and a cutter seat);

FIG. 2 is a schematic diagram of the position of a cutter head body with specific elements added after cutting at B-B in FIG. 1;

FIG. 3 is a schematic view of the hob and its hob holder of FIG. 1 in an assembled relationship;

FIG. 4 is a schematic diagram of the position of the hob seat in FIG. 3 where a specific element is added;

FIG. 5 is a schematic view of the hob of FIG. 3;

FIG. 6 is a schematic diagram of the position of adding specific elements to the cutter ring of the hob in FIG. 5;

FIG. 7 is an assembly view of a cutter and its holder of the shield tunneling machine cutter head and cutter system of FIG. 1;

FIG. 8 is a schematic diagram of the position of the cutter and the cutter holder of FIG. 7 where a specific element is added;

fig. 9 is a flowchart of a wear warning detection method for a shield tunneling machine cutter head and cutter system according to a specific embodiment of the present invention.

Description of the main element symbols:

11	cutter head main body
		12	Cutter head opening
11-1	Cutter head panel
		11-2	Outer cylindrical surface of cutter head
13	Mounting groove of hob seat
		31	Hob cutter
32	Rolling cutter seat
		32-1	Inner surface
32-2	Outer end face
		61	Cutter shaft
62	End cap
		63	Knife body
64	Knife ring
		71	Cutter seat
72	Cutting knife
		72-1	Rake face
73	Bolt

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Fig. 1 is a schematic structural diagram of a cutter head main body (including a rolling cutter seat and a cutting cutter seat) in a cutter head cutter system of a shield tunneling machine, and fig. 2 is a schematic position diagram of a specific element added to the cutter head main body after being cut at a position B-B in fig. 1. As shown in fig. 1 and 2, a cutter head body 11 of a shield tunneling machine cutter head cutter system of the present invention includes a cutter head opening 12, a roller seat mounting groove 13, a cutter seat 71, and a cutter head panel 11-1. In fig. 2, although the cutter head body 11 does not directly participate in cutting rock and soil, the cutter head panel 11-1 and the outer cylindrical surface 11-2 of the cutter head inevitably contact with rock and soil on a tunnel face to cause abrasion during the tunneling process of the shield tunneling machine. In FIG. 2, in order to prevent the tool setting plate body 11 from being excessively movedThe abrasion phenomenon is warned, and the distance between the cutter head main body 11 and the outer surface of the cutter head main body 11 is more than h₁Specifically, the distance between the inner area and the outer surface of the cutter head panel 11-1 and the outer cylindrical surface 11-2 of the cutter head is more than h₁Contains a specific element.

Fig. 3 is a schematic view of the hob and its hob holder assembly of fig. 1. As shown in fig. 3, the hob 31 is mounted on a hob base 32, the hob base 32 is mounted in the hob base mounting groove 13 of the cutterhead main body 11, and the hob 31 is pivotally movable on the hob base 32 for crushing rock. In fig. 4, during the process of cutting rock and soil by the hob 31, the inner surface 32-1 of the hob seat 32 opposite to the hob 31 and the outer end surface 32-2 of the hob seat opposite to the rock and soil of the tunnel face are easily worn by the sliding and rubbing action of the rock and soil; to alert the hob seat 32 of excessive wear, the distance between the inner surface 32-1 of the hob seat 32 and the outer end surface 32-2 of the hob seat 32 on the hob seat 32 is greater than h₂The inner region of (a), i.e. the shaded region in fig. 4, contains the specificity element.

Fig. 5 is a schematic diagram of the hob in fig. 3, and fig. 6 is a schematic diagram of a position of adding a specific element to a cutter ring of the hob in fig. 5. As shown in fig. 5 and 6, the hob 31 in the shield tunneling machine cutterhead cutter system of the present invention includes a cutter shaft 61, an end cover 62, a cutter body 63, and a cutter ring 64. In fig. 6, the cutter shaft 61 is fixedly supported on the hob base 32; the cutter body 63 is circumferentially movably connected with the cutter shaft 61 through a bearing; the end caps 62 are arranged at two sides of the cutter body 63; the cutter ring 64 is fastened on the periphery of the cutter body 63 in an interference fit manner and rotates along with the cutter body 63; the hob, except for the cutter ring 64, is a non-cutting element, such as the cutter shaft 61, the end cap 62 and the cutter body 63, which, although not directly involved in cutting rock and earth, inevitably has the possibility of contacting with the rock and earth and the risk of being worn by the rock and earth, and in order to warn of the wear of the non-cutting element in the hob, the non-cutting element in the hob contains a specific element.

Cutter ring 64 is a cutting element of a hob, but rather than the cutter ring being used entirely to contact and cut rock, it is located in a partial annular region of the periphery, i.e. not a female portion of the cutter ring as in fig. 6A shadow area; similarly, in order to warn the abnormal behavior of extreme wear of the cutter ring in the hob, the distance between the cutter ring 64 and the outer diameter of the cutter ring 64 is more than h₃I.e. the shaded area of the cutter ring as in fig. 6, contains the specificity element.

Fig. 7 is an assembly schematic diagram of a cutting knife 72 and a cutting knife seat 71 thereof in the shield tunneling machine cutterhead knife system in fig. 1, and fig. 8 is a schematic diagram of positions of specific elements added in the cutting knife 72 and the cutting knife seat 71 in fig. 7. As shown in fig. 7 and 8, the cutter 72 is mounted to the cutter holder 71 by a bolt 73, and the cutter holder 71 is mounted to the cutter head body 11; the cutter seat 71 and bolt 73 are non-cutting elements; although the cutter base 71 does not directly participate in cutting the rock soil, there is inevitably a possibility of contact with the rock soil and a risk of abrasion by the rock soil, and the cutter base 71 contains a specific element in order to warn of an abrasion phenomenon occurring to the cutter base 71. More specifically, as shown in fig. 8, the side surface of the cutter holder 71 on the same side as the rake surface 72-1 of the cutter 72 is spaced apart by a distance greater than h₄The region(s) of (a), i.e., the shaded region on the cutter holder 71 in fig. 8, is added with a specific element; like the cutter ring, the cutter 72 is also a cutting element for cutting rock and soil, but the cutter is not entirely used for contacting and cutting the rock and soil, but is located at a local area near the tip edge portion; similarly, in order to warn the abnormal behavior of extreme wear of the cutter 72, the distance between the cutter 72 and the tip of the cutter 72 is more than h₅The local area of (a), i.e. the shaded area of the cutter 72 as in fig. 8, contains the specificity element.

The following describes a specific embodiment of a shield tunneling machine cutter head and cutter system and a wear warning detection method thereof according to the present invention with reference to the accompanying drawings.

As shown in fig. 1, 3, 5 and 7, the present invention provides a shield tunneling machine cutterhead and cutter system, which includes a cutterhead main body, a cutter seat and a cutter, and is characterized by at least one of the following features:

the method is characterized in that: the cutter, except that the local area on the cutting element for contacting and cutting rock soil does not contain specific elements, other areas can contain specific elements;

the specific elements are defined as: the element is specific to a detection area to be warned, and the local area on the cutting element for contacting and cutting rock soil does not contain the element, the cut rock soil (containing occurrence environment) does not contain the element, and additives such as foaming agent, slurry modifying agent and the like do not contain the element; in this example, the cutter comprises a roller cutter for cutting rock and a cutter for cutting soil, wherein:

for the hob, i.e. the shaded areas of the arbor 61, end cap 62, body 63, and cutter ring 64 in fig. 6 contain specific elements;

for the cutters, i.e. the shaded area of cutter 72 in fig. 8 contains the specificity element;

and (2) feature: the cutter head main body contains specific elements;

and (3) feature: the tool apron contains specific elements. In this example, the tool seats include a hob seat 32 and a cutter seat 71, respectively.

Preferably, in feature 1, only the local region of the cutting element not used to contact and cut the earth contains the specific element; for hobs, the shaded area of the cutter ring 64 in FIG. 6 contains the specific elements; for the cutters, i.e. the shaded area of cutter 72 in fig. 8 contains the specificity element;

preferably, in the feature 2, only the cutter head body 11 is spaced from the outer surface of the cutter head body 11 by a distance greater than h₁Specifically, the distance between the inner area and the outer surface of the cutter head panel 11-1 and the outer cylindrical surface 11-2 of the cutter head is more than h₁The shaded region of (a), containing a specificity element;

preferably, in feature 3, for the hob seat 32 and the cutter seat 71 respectively:

the distance between the inner surface 32-1 of the hob seat 32 and the outer end surface 32-2 of the hob seat 32 on the hob seat 32 is larger than h₂The inner region of (a), i.e. the shaded region in fig. 4, contains the specificity element;

the distance from the side surface of the cutter seat 71 which is positioned on the same side with the front cutter surface 72-1 of the cutter 72 is more than h₄The region of (a), i.e. the shaded region on the cutter seat 71 in fig. 8, is added with a specificity element.

More preferably, the particularity of the specific elements is comprehensively considered, so that the rock breaking performance of the hob can not be inhibited, and the ecological environment can not be damaged, and therefore, elements harmless to the ecological environment can be selected.

Preferably, the detection areas to be warned are different from each other in the specific elements contained therein.

Preferably, the specific element is selected from copper, tin, aluminum, and magnesium. In this embodiment, more specifically, copper, tin, aluminum, and magnesium are specific elements of the cutter ring, the cutter, the hob seat, and the cutter seat, respectively.

More specifically, in feature 1: for hob cutters, in order to detect the extreme wear state of the cutter ring in time, i.e. h in fig. 6, it is considered that the cutter ring needs to be replaced after the radial wear amount reaches a given value₃Not less than 23 mm; for the cutters, h in FIG. 8₅Not less than 15 mm;

more specifically, in feature 2, h in fig. 2₁Not less than 100 mm;

more specifically, in feature 3: for the hob seat, h in fig. 4₂Not less than 10 mm; for the tool holder, h in FIG. 8₅Not less than 10 mm.

As shown in fig. 8, a method for detecting wear warning of a shield machine cutter head and cutter system used in cooperation with the shield machine cutter head and cutter system of the present invention is characterized by comprising the following steps:

s1: and collecting the waste liquid of the muck generated during the tunneling of the shield tunneling machine as a detection sample.

S2: detecting the detection sample obtained in the step S1, if the detection sample contains a specific element x, indicating that critical wear occurs to a cutter head and cutter system of the shield tunneling machine, and entering a step S3; and if the specific element x is not contained in the detected sample, indicating that the shield tunneling machine cutter head cutter system does not reach the critical wear state, and returning to the step S1.

S3: and stopping the shield tunneling machine for maintenance.

Preferably, S2 includes the following substeps:

s2-1: and (4) calcining the waste muck liquid obtained in the step (S3) to remove carbon elements in the waste muck liquid.

S2-2: and (3) adding strong acid into the calcined muck waste liquid obtained in the step (S2-1), and dissolving the calcined muck waste liquid to obtain a sample solution X to be detected containing insoluble impurities Y.

S2-3: the sample solution X to be tested obtained in S2-2 is separated from the insoluble impurity Y.

S2-4: detecting whether the sample solution X to be detected in the step S2-3 contains the specific element X, if so, indicating that the shield tunneling machine cutter head cutter system reaches a critical wear state, and entering a step S3; and if the specific element X is not detected in the sample solution X to be detected, the shield tunneling machine cutter head and cutter system does not reach the critical wear state, and the step S1 is returned.

Preferably, in S1, the muck waste liquid samples may be randomly extracted every half hour in consideration of various cutter ring failure behaviors which are easily caused during the shield machine hob excavation process, and in order to prevent the shield machine hob from generating special failure behaviors such as eccentric wear, tipping, and breakage without being noticed by the worker.

Preferably, in S2-1, the waste muck liquid obtained in S3 is placed in a crucible and then calcined in a muffle furnace.

More preferably, to prevent the components of the rock dust from melting during calcination, the calcination temperature may be controlled to a range close to, but not more than, 700 ℃ for 3 hours.

Preferably, in S2-2, a sufficient amount of strong acid is added to the calcined waste residue solution obtained in S2-1 to dissolve the specific elements in the calcined waste residue solution smoothly.

More specifically, in this embodiment, a sufficient amount of dilute nitric acid solution is added to the calcined waste residue solution to sufficiently dissolve the calcined waste residue solution.

Preferably, in order to rapidly separate the sample solution X to be tested from the insoluble impurities Y, S2-3, the insoluble impurities Y in the sample solution X to be tested may be removed by filtration.

Preferably, in order to rapidly detect whether the sample solution X to be detected contains the specific element X, the specific element X in S2-4 can be determined by a phenomenon in which the specific element X reacts with a strong acid.

More specifically, in this embodiment, copper nitrate is generated after copper oxide formed by calcining copper element in the hob ring reacts with a dilute nitric acid solution, which is blue, so that it can be quickly determined that the hob ring has reached the critical wear state, and the process proceeds to step S3.

In order to ensure that the accuracy of the detection result reaches the level of mg/L, a plurality of specific elements x in different parts in the cutter head cutter system are detected simultaneously. In S2-4, whether the sample solution X to be detected contains the specific element X can be detected simultaneously through a polarized Zeeman atomic absorption spectrometer. For example, the detection result contains specific elements of copper and tin, and does not contain specific elements of aluminum and magnesium, so that the condition that the hob ring and the cutter blade of the shield machine reach the extreme wear state and the condition that the cutter head and the cutter seat do not reach the extreme wear state can be judged, the step S3 is entered, and the shield machine is stopped for cutter replacement.

In summary, the shield tunneling machine cutter head cutter system and the wear warning detection method thereof of the present invention can implement wear detection of parts by adding specific elements to the parts of the cutter head cutter system, for example, adding different specific elements to different parts such as a hob seat, a hob ring, a cutter seat, a cutter, and the like. When the detection device is used, the abrasion detection of parts can be quickly realized according to the reaction phenomenon of specific elements added into the parts and strong acid, for example, the specific element copper element in the hob ring is calcined to become copper oxide which reacts with dilute nitric acid solution to generate copper nitrate, and the solution is blue, so that the condition that the hob ring reaches the critical abrasion state can be quickly judged; the number of times of shutdown inspection of the shield machine and the danger degree of life danger born by workers during warehouse-out inspection can be greatly reduced.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.