CN108022027A - A kind of Forecasting Methodology of shield through the amount of being unearthed during country rock contact band - Google Patents
A kind of Forecasting Methodology of shield through the amount of being unearthed during country rock contact band Download PDFInfo
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- CN108022027A CN108022027A CN201810116168.7A CN201810116168A CN108022027A CN 108022027 A CN108022027 A CN 108022027A CN 201810116168 A CN201810116168 A CN 201810116168A CN 108022027 A CN108022027 A CN 108022027A
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- country rock
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- 239000011435 rock Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000009412 basement excavation Methods 0.000 claims abstract description 14
- 230000005641 tunneling Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 11
- 239000002689 soil Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0635—Risk analysis of enterprise or organisation activities
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/08—Construction
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- Quality & Reliability (AREA)
- Mining & Mineral Resources (AREA)
- Development Economics (AREA)
- Game Theory and Decision Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Educational Administration (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Primary Health Care (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Through the Forecasting Methodology of the amount of being unearthed during country rock contact band, it comprises the following steps a kind of shield：First, country rock is contacted using shield driving direction as X-axis by the curve of band by geological prospecting, cutterhead plane vertical direction is fitted to one or several function f for Y-axis（x）；Cutter diameter d, as shown in Figure 1；Secondly, t the time required to cutterhead tunnels a unit distance in soft rock is obtained before shield excavation machine is introduced into country rock contact bandb；3rd, collected in the early period of shield excavation machine contact hard rock or t the time required to cutterhead tunnels same unit distance in hard rock is obtained according to previous experiencesa；4th, total amount C that is unearthed per my into a unit distance is calculated according to the following formula.The unearthed amount for calculating gained is inputted in shield machine in advance can make such as native storehouse push type broach disk rotating speed parameter of shield machine running parameter be in optimum state, be conducive to improve driving speed.
Description
Technical field
The present invention relates to a kind of construction technology, especially a kind of technology that constructing tunnel is carried out using texture machine, specifically
Say the Forecasting Methodology for being a kind of shield through the amount of being unearthed during country rock contact band.
Background technology
Shield machine is a kind of rock tunnel(ling) machine using shield method.The construction method of shield is development machine structure while driving
(laying) tunnel its " shield " (referring to supportive section of jurisdiction) is built, it is different from open type construction method.In the world, broad sense shield machine can also
For lithostratigraphy, the rock tunnel(ling) machine of open type (non-shield method) is simply different from.And in China, it will traditionally be used for weak soil
The rock tunnel(ling) machine on stratum is known as (narrow sense) shield machine, will be known as (narrow sense) TBM for lithostratigraphy.
A part uses shield method in complete-section tunnel boring machine, and a part uses open type construction method, for example, by China
The double shield rock tunnel development machines (TBM) of tunneling boring that iron builds heavy industry independent development carry double shields, it is not necessary to build (laying)
Tunnel its " shield " need not be laid with section of jurisdiction, but integrate excavation, supporting, slag tap, it is possible to achieve the one-pass molding in tunnel.
The basic functional principle of shield machine be exactly a cylinder steel component along canal axes when pushing ahead to soil
Earth is excavated.Housing, that is, shield of the cylinder component, it plays temporary support to the also unlined Tunnel Section excavated
Effect, bear the pressure of soil layer around, sometimes also subject to ground water pressure and by underground water gear outside.Excavation, casting, lining
The operations such as block carry out under the shielding of shield.
When shield machine passes through single country rock, the unearthed amount in cutterhead tunneling process generally compares fixation, because cutterhead is each
The driving speed at place is suitable.And when cutterhead is through country rock contact band, at this time the country rock at cutterhead card because hardness it is different,
Just occur that point that drivage efficiency has height occur in the different directions of same cutterhead, i.e.,：High, the phase with respect to soft rock part drivage efficiency
It is low to hard rock part drivage efficiency, thus cause cutterhead it is overall in rotating speed under the same conditions, soft rock part goes out with hard rock part
Soil amount is different, and cutterhead preferably must be held in designed fixed pan, this may occur fairly large because being unearthed inequality
The soil body sedimentation.
The situation of Change in surrounding rocks is inevitably run into shield tunneling process, and the unearthed amount at Change in surrounding rocks contact band is then
Need issues that need special attention because this is not only related to shield and pose adjustment, while be also relate to synchronous grouting and after
Secondary grouting of phase etc., any of which is a little dealt with improperly may all cause to seriously affect to surrounding enviroment.And estimate in advance
Unearthed amount of the shield in this tunneling process, there is critically important directive function for construction in later period.
The content of the invention
During the purpose of the present invention is for excavating country rock contact band during current shield-tunneling construction, after the shield entrance such as need again
Collection relevant parameter is taken a long time, and since the uncertainty of country rock branch, the collection of parameter equally exist huge be stranded
Difficulty, so in order to obtain being conducive to the accurate parameter of construction in later period, need to undertake bigger cost, can cause debugging cycle
Long, poor accuracy, influences construction efficiency, or even the problem of soil body sedimentation occurs, and invention one kind can obtain construction location in advance and go out
Soil is measured to carry out the shield of relevant parameter setting in advance through the Forecasting Methodology of the amount of being unearthed during country rock contact band.
The technical scheme is that：
The Forecasting Methodology for the amount of being unearthed when a kind of shield passes through country rock contact band, it is characterized in that it comprises the following steps：
First, by geological prospecting by country rock contact band curve using shield driving direction as X-axis, cutterhead plane Vertical Square
One or several function f (x) is fitted to for Y-axis；
Secondly, obtain cutterhead before shield excavation machine is introduced into country rock contact band and a unit distance is tunneled in soft rock
Required time tb；
3rd, collect in the early period of shield excavation machine contact hard rock or obtain cutterhead according to previous experiences and dug in hard rock
Into same unit distance required time ta；
4th, total amount C that is unearthed per my into a unit distance is calculated according to the following formula：
C=∫ Sa·dxa+∫Sb·dxa·k
In formula：
K is approximately a constant when two kinds of rock properties are constant, according to shield operation principle and rock property, k
≥1；
Sb=π r2-Sa
R=d/2, d are cutter diameter.
Constant k, the country rock contact tape function function f (x) is adjusted according to pick speed in the construction process；Shield
Development machine needs, and improves drivage efficiency.
After the unearthed amount for calculating gained in advance, parameters when being tunneled to shield machine, such as support pressure, cutterhead rotating speed etc. into
Row is set in advance, to avoid the occurrence of the phenomenon for the feasibility debugging for carrying out relevant parameter after cutterhead is dug to country rock again, is dropped significantly
Cost and risk in low shield tunneling process；And can be adjusted at any time according to actual conditions in tunneling process, with
Tunnel excavation parameter collection forms the effect of reciprocal mutual assistance.
Beneficial effects of the present invention：
Damage method of the present invention, required parameter enters contact with preceding collectable completion in shield machine mostly, and ought count in advance
Calculate the later stage substantially possible unearthed amount when, the adjustment of parameters, such as support pressure, cutterhead rotating speed etc. when being tunneled to shield machine
It can be carried out setting in advance, can thus be largely avoided and occur carrying out relevant parameter after cutterhead is dug to country rock again
The phenomenon of feasibility debugging, greatly reduces the cost and risk in shield tunneling process.And can be at any time in tunneling process
It is adjusted according to actual conditions, the effect of reciprocal mutual assistance is formed with tunnel excavation parameter collection.
Unearthed amount of the present invention as obtained by will calculate inputs in shield machine in advance can make shield machine running parameter such as soil
The parameters such as storehouse push type broach disk rotating speed are in optimum state, are conducive to improve driving speed.
The present invention instructs later stage shield-tunneling construction by arrangement of the early period to data information, from can reduce shield to a certain degree
The cost and risk wherein that may be present paid needed in structure driving.
Brief description of the drawings
Fig. 1 is the country rock contact band vertical profile areal coordinate schematic diagram of the present invention.
The country rock that Fig. 2 is the present invention is contacted with cross-sectional areal coordinate schematic diagram.
Embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in Figs. 1-2.
Through the Forecasting Methodology of the amount of being unearthed during country rock contact band, it comprises the following steps a kind of shield：
First, by geological prospecting by country rock contact band curve using shield driving direction as X-axis, cutterhead plane Vertical Square
One or several function f (x) is fitted to for Y-axis；Cutter diameter d, as shown in Figure 1；
Secondly, obtain cutterhead before shield excavation machine is introduced into country rock contact band and a unit distance is tunneled in soft rock
Required time tb；
3rd, collect in the early period of shield excavation machine contact hard rock or obtain cutterhead according to previous experiences and dug in hard rock
Into same unit distance required time ta；
4th, total amount C that is unearthed per my into a unit distance is calculated according to the following formula.
Details are as follows：
Order：
Wherein：taThe time required to a unit distance being tunneled for cutterhead in hard rock；
tbThe time required to a unit distance being tunneled for cutterhead in soft rock；
K can approximately regard constant as when two kinds of rock properties are basically unchanged, according to shield operation principle and rock property
Understand, k >=1.If it find that when two kinds of rock properties change greatly, k values should be adjusted in real time；
Make SaFor cross section hard rock area, S in front of cutterheadbFor cross section soft rock area in front of cutterhead, then with reference to Fig. 1,2 can
：
Sb=π r2-Sa (1-3)
Wherein：R=d/2
It is C to make cutterhead tunnel total amount of a being unearthed during unit, and wherein be unearthed C for hard rock parta, be unearthed C for soft rock partb, then：
C=Ca+Cb (1-4)
It can be obtained according to Fig. 1,2 and above formula combination integro-differential equation：
Ca=∫ Sa·dxa (1-5)
Ca=∫ Sb·dxb (1-6)
Wherein：dxa=Va·ta
dxb=Vb·tb
VaFor hard rock driving speed, VbFor weak soil driving speed；
Because soft, hard country rock is all at cutterhead, therefore driving speed is identical, i.e. Va=Vb, then：
Therefore：
dxb=dxa·k (1-8)
Therefore：
C=Ca+Cb
=∫ Sa·dxa+∫Sb·dxb
=∫ Sa·dxa+∫Sb·dxa·k (1-9)
More than according to each formula, when shield machine is tunneled to country rock contact band, only t need to be collecteda、tbAnd country rock contact band
Approximate trend relation function f (x), wherein：tbIt can be collected before contact band is introduced into, taCan be in the early period of driving contact band
Collect or obtained according to previous experiences, f (x) can substantially be depicted according to investigation result figure, and wherein these parameters can be rear
Phase is adjusted correspondingly, to adapt to driving needs.
Part that the present invention does not relate to is same as the prior art or can be realized using the prior art.
Claims (3)
1. a kind of shield is through the Forecasting Methodology of the amount of being unearthed during country rock contact band, it is characterized in that it comprises the following steps：
First, by geological prospecting by country rock contact band curve using shield driving direction as X-axis, cutterhead plane vertical direction is
Y-axis is fitted to one or several function f (x)；
Secondly, cutterhead is obtained before shield excavation machine is introduced into country rock contact band to tunnel in soft rock needed for a unit distance
Time tb；
3rd, collect in the early period of shield excavation machine contact hard rock or obtain cutterhead according to previous experiences and tunneled in hard rock together
T the time required to one unit distancea；
4th, total amount C that is unearthed per my into a unit distance is calculated according to the following formula：
C=∫ Sa·dxa+∫Sb·dxa·k
In formula：
K is approximately a constant when two kinds of rock properties are constant, according to shield operation principle and rock property, k >=1；
<mrow>
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<mi>S</mi>
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Sb=π r2-Sa
R=d/2, d are cutter diameter.
2. according to the method described in claim 1, it is characterized in that the constant k, country rock contact tape function function f (x) are being applied
It is adjusted during work according to pick speed；Shield excavation machine needs, and improves drivage efficiency.
3. according to the method described in claim 1, it is characterized in that in advance calculate gained unearthed amount after, it is each when being tunneled to shield machine
Item parameter, such as support pressure, cutterhead rotating speed etc. are set in advance, and correlation is carried out after cutterhead is dug to country rock again to avoid the occurrence of
The phenomenon of the feasibility debugging of parameter, greatly reduces the cost and risk in shield tunneling process；And in tunneling process
It can be adjusted at any time according to actual conditions, the effect of reciprocal mutual assistance is formed with tunnel excavation parameter collection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810116168.7A CN108022027B (en) | 2018-02-06 | 2018-02-06 | Prediction method for soil output when shield passes through surrounding rock contact zone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810116168.7A CN108022027B (en) | 2018-02-06 | 2018-02-06 | Prediction method for soil output when shield passes through surrounding rock contact zone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108022027A true CN108022027A (en) | 2018-05-11 |
| CN108022027B CN108022027B (en) | 2021-06-25 |
Family
ID=62075246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810116168.7A Expired - Fee Related CN108022027B (en) | 2018-02-06 | 2018-02-06 | Prediction method for soil output when shield passes through surrounding rock contact zone |
Country Status (1)
| Country | Link |
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| CN (1) | CN108022027B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810100A (en) * | 2022-06-28 | 2022-07-29 | 中铁工程服务有限公司 | Shield tunneling attitude prediction method based on deep neural network |
Citations (3)
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|---|---|---|---|---|
| CN101131090A (en) * | 2007-10-09 | 2008-02-27 | 中铁二局股份有限公司 | Construction method for shallow soil-covered river bed under shield tunnel |
| CN102707081A (en) * | 2012-06-19 | 2012-10-03 | 上海地铁盾构设备工程有限公司 | On-line measurement device for residue soil discharge volume in shield construction based on laser velocity measurement |
| CN106121662A (en) * | 2016-05-06 | 2016-11-16 | 同济大学 | Backbreak region synchronous grouting dynamic compensation of shield digging local fills control method |
-
2018
- 2018-02-06 CN CN201810116168.7A patent/CN108022027B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101131090A (en) * | 2007-10-09 | 2008-02-27 | 中铁二局股份有限公司 | Construction method for shallow soil-covered river bed under shield tunnel |
| CN102707081A (en) * | 2012-06-19 | 2012-10-03 | 上海地铁盾构设备工程有限公司 | On-line measurement device for residue soil discharge volume in shield construction based on laser velocity measurement |
| CN106121662A (en) * | 2016-05-06 | 2016-11-16 | 同济大学 | Backbreak region synchronous grouting dynamic compensation of shield digging local fills control method |
Non-Patent Citations (2)
| Title |
|---|
| 刘新科: "盾构掘进中软土地层地表沉降与出土量关系研究", 《上海建设科技》 * |
| 吴庆红: "复合地层盾构近距离下穿既有成型隧道风险控制研究", 《隧道/地下工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810100A (en) * | 2022-06-28 | 2022-07-29 | 中铁工程服务有限公司 | Shield tunneling attitude prediction method based on deep neural network |
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| CN108022027B (en) | 2021-06-25 |
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