CN106295075A - A kind of hard rock tunnel development machine normal cross section disk cutter weight wear extent predictor method - Google Patents

A kind of hard rock tunnel development machine normal cross section disk cutter weight wear extent predictor method Download PDF

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CN106295075A
CN106295075A CN201610771253.8A CN201610771253A CN106295075A CN 106295075 A CN106295075 A CN 106295075A CN 201610771253 A CN201610771253 A CN 201610771253A CN 106295075 A CN106295075 A CN 106295075A
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disk cutter
cutterhead
wear extent
cutter
hard rock
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CN106295075B (en
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王立辉
张茜
亢澜
亢一澜
赵祥君
侯振德
蔡宗熙
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Army Military Transportation University
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Military Transportation University of PLA
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation

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  • Theoretical Computer Science (AREA)
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Abstract

The present invention relates to a kind of hard rock tunnel development machine normal cross section disk cutter weight wear extent predictor method, by setting up the normal cross section disk cutter weight wear extent in cutterhead difference installation site and the mutual relation formula between rock abrasiveness index CAI, rock material mechanics parameter, disk cutter normal thrust load, disk cutter actual motion distance, then calculate normal cross section disk cutter weight wear extent according to this mutual relation formula.The present invention can realize estimating in real time of cutterhead difference installation site normal cross section disk cutter abrasion condition, thus in constructing for hard rock TBM, the judgement of dish type hob abrasion provides reference with control.

Description

A kind of hard rock tunnel development machine normal cross section disk cutter weight wear extent predictor method
Technical field
The invention belongs to tunnel piercing equipment technical field of construction, be specifically related to a kind of hard rock tunnel development machine normal cross section dish Shape hobboing cutter weight wear extent predictor method.
Background technology
Hard rock tunnel development machine (TBM) is to be rotated by cutterhead, utilizes cutter fractured rock, forms the large-scale of rock tunnel High-tech construction equipment.Often cross section (CCS) disk cutter is to use the cutter the most extensive, efficiency of breaking rock is the highest on current hard rock TBM Tool, meanwhile, is also the most driving parts of consumption.In work progress, the rock of the big hardness of high intensity makes tool wear Problem is extremely serious, if can not detect in time, cutterhead will be caused to wear and tear, cause construction failure, significantly reduce drivage efficiency, Improve construction cost, annoying construction safety.But, in the normal tunneling process of hard rock TBM, severe underground construction environment Make disk cutter rock break-off process extremely complex and invisible, the most still lack the effective technology of directly detection disk cutter abrasion Means.Estimate dish type hob abrasion situation in normal tunneling process the most in real time, improve construction speed scientifically and rationally, it is to avoid execute Work fault, saves construction cost, becomes the crucial problem that hard rock TBM construction field is urgently to be resolved hurrily.
Summary of the invention
It is an object of the invention to provide a kind of hard rock tunnel development machine normal cross section dish for solving above-mentioned technical problem Shape hobboing cutter weight wear extent predictor method, it can realize the reality of cutterhead difference installation site normal cross section disk cutter abrasion condition Time estimate, thus for hard rock TBM construct in dish type hob abrasion judgement with control provide reference.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of hard rock tunnel development machine normal cross section disk cutter weight wear extent predictor method, employing following methods:
Set up normal cross section disk cutter weight wear extent in cutterhead difference installation site and rock abrasiveness index CAI, Mutual relation formula between rock material mechanics parameter, disk cutter normal thrust load, disk cutter actual motion distance, and Normal cross section disk cutter weight wear extent is calculated according to this mutual relation formula；
The statement of this mutual relation is as follows:
Vi=k2·CAIα·(k3Fn)β·ξLi
In formula, ViFor the weight wear extent of i-th disk cutter on TBM cutterhead；k2, α and β be constant, pass through wear simulation Test obtains；k3For constant, the mechanics parameter of disk cutter material with rock material determine；FnFor acting on disk cutter Normal thrust load；LiFor on cutterhead i-th disk cutter actual motion distance；ξ is disk cutter skidding ratio.
I-th disk cutter actual motion distance L on described cutterheadiDetermined by below equation:
Li=2n π rit
In formula, n is cutterhead rotating speed；T is the actual driving time；riInstallation radius on cutterhead i-th disk cutter.
Described disk cutter normal thrust load FnWith constant k3Calculating formula respectively as follows:
F n = T h N
k 3 = E 1 E 2 π b R [ E 2 ( 1 - υ 1 2 ) + E 1 ( 1 - υ 2 2 ) ]
In formula, Th is cutterhead gross thrust；N is the disk cutter quantity being arranged on cutterhead；E1For disk cutter material Elastic modelling quantity；υ1Poisson's ratio for disk cutter material；E2For rock material elastic modelling quantity；υ2Poisson's ratio for rock material；b For disk cutter blade width；R is disk cutter radius.
The described skidding computing formula than ξ is as follows:
ξ ≈ 1 2 k 1 · p 0.5 · 0.11 CC 1.2
In formula, p is cutting-in；k1For data fitting constant；CC is disk cutter cutting coefficient, by the cutterhead of Real-time Collection Total torque, cutterhead gross thrust are calculated with installation radius and the disk cutter quantity of disk cutter on cutterhead, computing formula As follows:
C C = T o r · Σ i = 1 N r i T h · N
In formula, Tor is cutterhead total torque；Th is cutterhead gross thrust, riInstallation half on cutterhead i-th disk cutter Footpath；N is the disk cutter quantity being arranged on cutterhead.
Described data fitting constant k1It is according to disk cutter and hard rock contact arc length corresponding angleWith cutting-in p, dish type rolling Geometrical relationship between cutter radius R utilizes data matching to obtain, and described geometrical relationship is as follows:
Described disk cutter and hard rock contact arc length corresponding angleAnd the relation between cutting-in p is:P exists (0,20mm] in the range of change.
The present invention be mechanical analysis based on disk cutter in the normal tunneling process of hard rock TBM and hard rock action by contact and The theory analysis of cutter ring surfacing abrasion mechanism, utilizes boring parameter that hard rock TBM work progress gathers automatically to propose A kind of estimate the computational methods of normal cross section disk cutter weight wear extent, side of the present invention in the normal tunneling process of hard rock TBM in real time Method for improve hard rock TBM drivage efficiency, optimize boring parameter, extend cutter life significant.
Accompanying drawing explanation
Fig. 1 illustrates in the present embodiment disk cutter scheme of installation on TBM cutterhead；
Fig. 2 illustrates in the present embodiment on TBM cutterhead the actual value of No. 11 to No. 25 disk cutter weight wear extenies with pre- Measured value contrasts.
Detailed description of the invention
Below, substantive distinguishing features and advantage to the present invention are further described in conjunction with the embodiments, but the present invention is not It is confined to listed embodiment.
Below, in conjunction with the upper disk cutter scheme of installation of the TBM cutterhead (cutter radius is R=2885mm) shown in Fig. 1, right The present invention estimates hard rock tunnel development machine normal cross section disk cutter weight wear extent the most in real time and carries out following detailed description.
In Fig. 1, cutterhead has 42 cutter spacing number, is sequentially arranged to cutterhead outer rim from cutter head center, wherein, in nearly cutterhead Being mounted with 4 twolip disk cutters in 1～No. 8 cutter spacing of the heart, what remaining cutter spacing was installed is single-blade disk cutter；9～No. 29 Cutter spacing is arranged in the middle part of cutter head panel；30～No. 42 cutter spacing are arranged on cutterhead outer rim；The installation radius 90mm of No. 1 cutter spacing, remaining Numeral between adjacent cutter spacing represents that adjacent cutter spacing installs the difference of radius, and the adjacent cutter spacing between 9～No. 16 installs radius Difference is 85mm, and the difference of No. 8 cutter spacing and No. 16 cutter spacing installation radiuses is 680mm, the adjacent cutter spacing peace between 16～No. 29 The difference of dress radius is 84mm, and the difference of No. 16 cutter spacing and No. 29 cutter spacing installation radiuses is 1092mm；36 and 37 dialer shape rollings Cutter is arranged on cutterhead same installation radius, and 38 and No. 39 disk cutters are arranged on cutterhead same installation radius, and 40,41 and 42 Number disk cutter is arranged on cutterhead same installation radius.
Shown in Figure 1, when cross section normal to hard rock tunnel development machine disk cutter weight wear extent is estimated, use such as Lower step is carried out:
(1) according to the actually used disk cutter radius of TBM in embodiment, matching disk cutter is corresponding with hard rock contact arc length AngleAnd mutual relation between cutting-in p,P (0,20mm] in the range of change；
In the present embodiment, using cutter is that a diameter of 432mm (radius is 216mm) approximates normal cross section disk cutter, logical Cross data Fitting Analysis to obtain, in the range of disk cutter normal wear 20mm, k1≈ 0.098, disk cutter contacts with hard rock Arc length corresponding angleAnd mutual relation is then as follows between cutting-in p:
According to above-mentioned formula, disk cutter and hard rock contact arc length corresponding angle can be calculated by cutting-in pWherein, Cutting-in p is directly by the boring parameter of hard rock TBM data collecting system Real-time Collection.
(2) there is mutual relation formula according to disk cutter skidding than between ξ and cutting-in p, cutting coefficient CCCalculate cutting coefficient CC, and calculate disk cutter according to this cutting coefficient CC and skid ratio:
In the present embodiment in a certain P. drechsleri, by the cutterhead gross thrust of TBM data collecting system Real-time Collection it is 11535.928KN, cutterhead total torque is 10237.248KN m, and cutting-in is 11mm；Disk cutter quantity 42 is installed on cutterhead, On cutterhead, radius always installed by all disk cutters is 72.979m, then the cutting coefficient CC of this P. drechsleri is:
Therefore, disk cutter skids and than ξ is:
ξ≈0.049p0.5·CC1.2=0.049 × 110.5×0.11×0.5111.2=0.007986
(3) skidding distance in disk cutter actual motion is determined；In the present embodiment, cutterhead rotating speed is 6.65rpm, upper Stating the actual driving time 11min in P. drechsleri, on cutterhead, the installation radius of the 25th disk cutter is 2.118m, and cutterhead Upper i-th disk cutter actual motion distance LiComputing formula Gongwei Li=2n π riT, then in No. 25 cutter spacing of this P. drechsleri Skidding distance in disk cutter actual motion is:
l25=ξ L25=0.007986 × 2 × 6.65 × π × 2.118 × 11=7.774m
(4) according to the normal cross section disk cutter weight wear extent in cutterhead difference installation site and rock abrasiveness index Mutual relation formula meter between CAI, rock mechanics parameters, disk cutter normal thrust load, disk cutter actual motion distance Calculate normal cross section disk cutter weight wear extent；
Vi=k2·CAIα·(k3Fn)β·ξLi
In formula, k2, α and β be constant, can be obtained by Wearing Simulated Test method.Utilize in the present embodiment engineering Disk cutter material makes cutter sample, utilizes the rock material of this engineering typical geology to make rock specimens, according to simulation system Unite similar with real system geometrical configuration, material character is consistent, contact stress is close and the principle of relative motion similar in form, Carry out the ring block Wearing Simulated Test of 180 groups of standards at M-2000 abrasion tester, measure weight wear extent and rock index CAI, normal thrust load and the mutual relation of operating distance, record index α=2.23, β=1.15, coefficient k2=2.6 × 10-10(coefficient k2Also can revise further according to the project data of Real-time Collection)；In the above-mentioned P. drechsleri of the present embodiment, make The normal thrust load being used on disk cutter is:
In the present embodiment, the elastic modulus E of disk cutter material1=206Gpa, Poisson's ratio υ1=0.3；Driving geology rock The elastic modulus E of material2=7.5Gpa, Poisson's ratio υ2=0.23；Disk cutter blade width b=0.012m；Disk cutter radius R=0.216m.Then constant k3For:
In this P. drechsleri, tunnel formation rock abrasion index CAI=1.26, then disk cutter in No. 25 cutter spacing Weight wear extent is:
V25=k2·CAIα·(k3Fn)β·ξL25
=2.6 × 10-10×1.262.23×(939.611×274.665)1.15×7.774
=0.00566 (kg)
According to the present embodiment engineering TBM knife disc tool scheme of installation 1, calculate the peace that each cutter spacing number is fixed a cutting tool on cutterhead Dress radius, utilizes the said method of the present invention can calculate the move distance of disk cutter in cutterhead difference installation site；So The move distance of the rear disk cutter utilizing this to calculate, and then (the prediction of each cutter spacing disk cutter weight wear extent can be calculated Value)；Wherein, No. 11 to No. 25 are installed in the middle part of cutter head panel, and the actual value of their weight wear extent contrasts with predictive value See Fig. 2.In Fig. 2, abscissa represents that radius installed by cutterhead, and unit is mm；Vertical coordinate represents weight wear extent, and unit is kg； " " represents the actual value of weight wear extent in the present embodiment；" ☆ " represents the predictive value of weight wear extent in the present embodiment.
In the present embodiment engineering the 7681st ring to 7696 ring tunneling processes, No. 25 cutter spacing calculated according to the inventive method Disk cutter weight wear extent value of calculation (predictive value), is shown in Table 1.
Table 1
As can be seen from the above Table 1, the tool abrasion value of calculation that the tool wear monitoring method of the present invention calculates, i.e. Predictive value 0.2086kg and actual weight wear extent 0.1829kg substantially close to, illustrate the present invention tool wear monitoring Method is practical, can be effective to prediction and the detection of tool weight wear extent.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (5)

1. a hard rock tunnel development machine normal cross section disk cutter weight wear extent predictor method, it is characterised in that below employing Method:
Set up the normal cross section disk cutter weight wear extent in cutterhead difference installation site and rock abrasiveness index CAI, rock Mutual relation formula between mechanical parameters, disk cutter normal thrust load, disk cutter actual motion distance, and according to This mutual relation formula calculates normal cross section disk cutter weight wear extent；
The statement of this mutual relation is as follows:
Vi=k2·CAIα·(k3Fn)β·ξLi
In formula, ViFor the weight wear extent of i-th disk cutter on TBM cutterhead；k2, α and β be constant, pass through Wearing Simulated Test Obtain；k3For constant, the mechanics parameter of disk cutter material with rock material determine；FnFor acting on the normal direction of disk cutter Thrust load；LiFor on cutterhead i-th disk cutter actual motion distance；ξ is disk cutter skidding ratio.
Hard rock tunnel development machine normal cross section disk cutter weight wear extent predictor method, its feature the most according to claim 1 It is, i-th disk cutter actual motion distance L on described cutterheadiDetermined by below equation:
Li=2n π rit
In formula, n is cutterhead rotating speed；T is the actual driving time；riInstallation radius on cutterhead i-th disk cutter.
Hard rock tunnel development machine normal cross section disk cutter weight wear extent predictor method, its feature the most according to claim 1 It is, described disk cutter normal thrust load FnWith constant k3Calculating formula respectively as follows:
F n = T h N
k 3 = E 1 E 2 π b R [ E 2 ( 1 - υ 1 2 ) + E 1 ( 1 - υ 2 2 ) ]
In formula, Th is cutterhead gross thrust；N is the disk cutter quantity being arranged on cutterhead；E1Springform for disk cutter material Amount；υ1Poisson's ratio for disk cutter material；E2For rock material elastic modelling quantity；υ2Poisson's ratio for rock material；B is dish type Hobboing cutter blade width；R is disk cutter radius.
Hard rock tunnel development machine normal cross section disk cutter weight wear extent predictor method, its feature the most according to claim 1 Being, the described skidding computing formula than ξ is as follows:
ξ ≈ 1 2 k 1 · p 0.5 · 0.11 CC 1.2
In formula, p is cutting-in；k1For data fitting constant；CC is disk cutter cutting coefficient, is always turned round by the cutterhead of Real-time Collection Square, cutterhead gross thrust are calculated with installation radius and the disk cutter quantity of disk cutter on cutterhead, and computing formula is as follows:
C C = T o r · Σ i = 1 N r i T h · N
In formula, Tor is cutterhead total torque；Th is cutterhead gross thrust；riInstallation radius on cutterhead i-th disk cutter；N is The disk cutter quantity being arranged on cutterhead.
Hard rock tunnel development machine normal cross section disk cutter weight wear extent predictor method, its feature the most according to claim 1 It is, described data fitting constant k1It is according to disk cutter and hard rock contact arc length corresponding angleWith cutting-in p, disk cutter Geometrical relationship between radius R utilizes data matching to obtain, and described geometrical relationship is as follows:
Described disk cutter and hard rock contact arc length corresponding angleAnd the relation between cutting-in p is:P (0, 20mm] in the range of change.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107545124A (en) * 2017-09-29 2018-01-05 天津大学 The Forecasting Methodology of the normal section disk cutter wear condition of rock tunnel development machine
CN107885899A (en) * 2017-06-06 2018-04-06 中铁隧道集团有限公司 A kind of shield TBM unnelling performancet integrated evaluating methods
CN108387473A (en) * 2018-02-02 2018-08-10 中铁隧道局集团有限公司 The wear test and prediction technique of a kind of heading equipment cutter under weak soil environment
CN109236311A (en) * 2018-11-28 2019-01-18 中铁隧道局集团有限公司 Super-large diameter cutterhead and its tooling setup method
CN109307493A (en) * 2018-09-12 2019-02-05 天津大学 The real-time detection method of the normal section disk cutter wear condition of hard rock tunnel development machine
CN111582564A (en) * 2020-04-26 2020-08-25 盾构及掘进技术国家重点实验室 Method for predicting TBM rock mass condition-related utilization rate
CN112855193A (en) * 2021-02-24 2021-05-28 中铁工程装备集团隧道设备制造有限公司 Method for accurately evaluating wear resistance of TBM hob ring

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Publication number Priority date Publication date Assignee Title
CN102278961A (en) * 2011-03-21 2011-12-14 天津大学 Heading machine disc cutter wear extent pre-estimate calculating method
WO2015188356A1 (en) * 2014-06-12 2015-12-17 中国铁建重工集团有限公司 Hard rock tunnel boring machine
CN105260513A (en) * 2015-09-23 2016-01-20 中国人民解放军军事交通学院 Judging method of boring state of hard rock TMB
CN105352463A (en) * 2015-09-23 2016-02-24 中国人民解放军军事交通学院 Real-time calculation method of abrasion loss of disc cutter of hard rock tunnelling boring machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102278961A (en) * 2011-03-21 2011-12-14 天津大学 Heading machine disc cutter wear extent pre-estimate calculating method
WO2015188356A1 (en) * 2014-06-12 2015-12-17 中国铁建重工集团有限公司 Hard rock tunnel boring machine
CN105260513A (en) * 2015-09-23 2016-01-20 中国人民解放军军事交通学院 Judging method of boring state of hard rock TMB
CN105352463A (en) * 2015-09-23 2016-02-24 中国人民解放军军事交通学院 Real-time calculation method of abrasion loss of disc cutter of hard rock tunnelling boring machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107885899A (en) * 2017-06-06 2018-04-06 中铁隧道集团有限公司 A kind of shield TBM unnelling performancet integrated evaluating methods
CN107545124A (en) * 2017-09-29 2018-01-05 天津大学 The Forecasting Methodology of the normal section disk cutter wear condition of rock tunnel development machine
CN107545124B (en) * 2017-09-29 2019-11-12 天津大学 The prediction technique of the normal section disk cutter wear condition of rock tunnel development machine
CN108387473A (en) * 2018-02-02 2018-08-10 中铁隧道局集团有限公司 The wear test and prediction technique of a kind of heading equipment cutter under weak soil environment
CN108387473B (en) * 2018-02-02 2020-09-11 中铁隧道局集团有限公司 Wear test and prediction method of tunneling equipment cutter in soft soil environment
CN109307493A (en) * 2018-09-12 2019-02-05 天津大学 The real-time detection method of the normal section disk cutter wear condition of hard rock tunnel development machine
CN109236311A (en) * 2018-11-28 2019-01-18 中铁隧道局集团有限公司 Super-large diameter cutterhead and its tooling setup method
CN111582564A (en) * 2020-04-26 2020-08-25 盾构及掘进技术国家重点实验室 Method for predicting TBM rock mass condition-related utilization rate
CN112855193A (en) * 2021-02-24 2021-05-28 中铁工程装备集团隧道设备制造有限公司 Method for accurately evaluating wear resistance of TBM hob ring

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