CN108920417A - The calculation method of Rock And Soil dehydration quicksand rate on the outside of a kind of shield subway tunnel section of jurisdiction - Google Patents
The calculation method of Rock And Soil dehydration quicksand rate on the outside of a kind of shield subway tunnel section of jurisdiction Download PDFInfo
- Publication number
- CN108920417A CN108920417A CN201810856423.1A CN201810856423A CN108920417A CN 108920417 A CN108920417 A CN 108920417A CN 201810856423 A CN201810856423 A CN 201810856423A CN 108920417 A CN108920417 A CN 108920417A
- Authority
- CN
- China
- Prior art keywords
- quicksand
- tunnel
- section
- jurisdiction
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
Abstract
The invention discloses the calculation methods of Rock And Soil dehydration quicksand rate on the outside of a kind of shield subway tunnel section of jurisdiction, include the following steps：Obtain the average quicksand rate of the quicksand of duct pieces of shield tunnel stitching portion；Measure the maximum length and lateral seepage flow length of shield tunnel genesis analysis；Calculate tunnel unit length cross-section section of jurisdiction and the quicksand storage on the outside of grouting layer, according to quicksand storage acquire per length section corresponding to quicksand stockpile area；Calculate the quicksand volume stockpiled at infiltration quicksand.The present invention provides the calculation method of Rock And Soil dehydration quicksand rate on the outside of a kind of shield subway tunnel section of jurisdiction, Rock And Soil dehydration quicksand rate on the outside of subway tunnel section of jurisdiction can effectively be calculated, when emergency situations generate, it can effectively be taken measures according to Rock And Soil dehydration quicksand rate on the outside of subway tunnel duct piece, effectively preventing is carried out, casualties is reduced.
Description
Technical field
The present invention relates to subway tunnel prospecting technique fields, and in particular to Rock And Soil on the outside of a kind of shield subway tunnel section of jurisdiction
The calculation method of dehydration quicksand rate.
Background technique
With the development of transportation industry, using when being built using shield machine to subway tunnel, due to tradition
The constructing tunnel mode of quick-fried brill hair not only progress is slow, and biggish disturbance is generated to tunnel periphery Rock And Soil and table, in reality
In the engineering of border, in time utilize reasonable supporting means, be also easy will lead to occur around country rock it is biggish deformation and earth's surface generate
Biggish sedimentation；However, shield method, during construction, since speed of application is fast, the continuity of excavation supporting is preferable, right
The disturbance of periphery Rock And Soil is smaller, and the subsidence value of generation has the reduction of dealings amplitude relative to drill bursting construction.But
During using shield construction, since section of jurisdiction is during splicing, the fastness and continuity connected between section of jurisdiction is all
Generate large effect with the overall structure of section of jurisdiction, constructing tunnel quality, section of jurisdiction when seeping water or dehydration quicksand situation occurring,
Influence to shield-tunneling construction is especially great, needs timely to make relevant response.But geology and hydrologic exploration it is insufficient or
On the outside of unknown tunnel under the premise of Rock And Soil sand carrying capacity, it is difficult to make in time correctly response to paroxysmal quicksand, the native phenomenon of stream.
Therefore, those skilled in the art is dedicated to studying Rock And Soil dehydration quicksand on the outside of a kind of shield subway tunnel section of jurisdiction
The calculation method of rate can effectively calculate Rock And Soil dehydration quicksand rate on the outside of subway tunnel section of jurisdiction, can when emergency situations generate
Effectively to take measures according to Rock And Soil dehydration quicksand rate on the outside of subway tunnel duct piece, effectively preventing is carried out, reduces personnel
Injures and deaths.
Summary of the invention
For the defects in the prior art, the present invention provides Rock And Soil dehydration quicksand on the outside of a kind of shield subway tunnel section of jurisdiction
The calculation method of rate can effectively calculate Rock And Soil dehydration quicksand rate on the outside of subway tunnel section of jurisdiction, can when emergency situations generate
Effectively to take measures according to Rock And Soil dehydration quicksand rate on the outside of subway tunnel duct piece, effectively preventing is carried out, reduces personnel
Injures and deaths.
To achieve the above object, the present invention provides Rock And Soil dehydration quicksand rates on the outside of a kind of shield subway tunnel section of jurisdiction
Calculation method includes the following steps：
1) the average quicksand rate of the quicksand of duct pieces of shield tunnel stitching portion is obtained.
2) maximum length and lateral seepage flow length of shield tunnel genesis analysis are measured.
3) the cross-section section of jurisdiction for calculating tunnel unit length and the quicksand storage on the outside of grouting layer, calculation formula.
In formula (1)：Q indicates quicksand storage, unit m3/h；Indicate average quicksand rate, unit m2/h；S indicates horizontal
To seepage flow length, unit m.
4) according to quicksand storage acquire per length section corresponding to quicksand stockpile area.
5) the quicksand volume stockpiled at infiltration quicksand is calculated, calculation formula is as follows：
V=SSand×LIt is vertical (2)
In formula (2)：V indicates the quicksand volume stockpiled at infiltration quicksand, unit m3；SSandIndicate per length section
Corresponding quicksand stockpiles area, unit m2；LIt is verticalFor the maximum length of shield tunnel genesis analysis, unit m.
Preferably, the average quicksand rate packets for obtaining the quicksand of duct pieces of shield tunnel stitching portion are included in the section of jurisdiction of shield tunnel
Stitching portion is collected the quicksand of exudation, and records the time of collection, measures sand carrying capacity, the quicksand of unit of account time quicksand
Amount.
Further, it calculates the cross-section section of jurisdiction of tunnel unit length and the quicksand storage on the outside of grouting layer further includes meter
Effective seepage flow end A is calculated to the infiltration coefficient between the B of section of jurisdiction inner end, the formula of infiltration coefficient is as follows：
In formula (3)：Indicate effective seepage flow end A to the infiltration coefficient between the B of section of jurisdiction inner end；LA is fragrantIndicate effective seepage flow end
A is to the distance between section of jurisdiction inner end B, unit m；I indicates the infiltration number of plies of effective seepage flow end A each soil layer from top to bottom；
KiIndicate the infiltration coefficient of effective seepage flow end A each soil layer from top to bottom；LiIndicate each soil layer it is top-down with section of jurisdiction on the inside of
Hold the distance between B, unit m.
Further, according to Darcy's law：
V=k × i (4)
In formula (4)：V indicates quicksand rate, unit m2/h；K indicates infiltration coefficient, unit m/s；I indicates waterpower slope
Drop, unit h/m；
Rock And Soil dehydration quicksand Mean Speed on the outside of shield subway tunnel section of jurisdiction is calculated, calculation formula is as follows：
In formula (5)：Indicate that Rock And Soil dehydration quicksand is averaged quicksand rate on the outside of shield subway tunnel section of jurisdiction, unit m2/
h；Indicate effective seepage flow end A to the infiltration coefficient between the B of section of jurisdiction inner end；iWaterIndicate effective seepage flow end A to section of jurisdiction inner end B
Between hydraulic slope；I indicates the infiltration number of plies of effective seepage flow end A each soil layer from top to bottom；LA is fragrantIndicate effective seepage flow end A
To the distance between section of jurisdiction inner end B, unit m；KiIndicate the infiltration coefficient of effective seepage flow end A each soil layer from top to bottom；Li
Indicate that each soil layer is top-down the distance between with section of jurisdiction inner end B, unit m；That Δ h is indicated is effective seepage flow end A
To the head difference between the B of section of jurisdiction inner end, unit m.
Further, the lateral seepage flow length including calculating tunnel：
S=d θ × R (6)
In formula (6)：S indicates the lateral seepage flow length in the tunnel calculated, unit m；The lateral seepage flow length in θ expression tunnel
Corresponding angle, unit rad；D θ indicates micro- corner of angle corresponding to the lateral seepage flow length in tunnel；R indicates tunnel
Section of jurisdiction is at a distance from the bottom center of the tunnel hole Luo Dong, unit m.
Seepage discharge corresponding to angle corresponding to the lateral seepage flow length in tunnel is calculated, calculation formula is as follows：
In formula (7)：Q indicates seepage discharge corresponding to angle corresponding to the lateral seepage flow length in tunnel, unit m3/h；Indicate Rock And Soil dehydration quicksand Mean Speed on the outside of shield subway tunnel section of jurisdiction, unit m2/h；D θ indicates that the lateral of tunnel is seeped
Flow micro- corner of angle corresponding to length；R expression tunnel duct piece is at a distance from the bottom center of the tunnel hole Luo Dong, unit m；Δh
What is indicated is effective seepage flow end A to the head difference between the B of section of jurisdiction inner end, unit m；KiIndicate effective seepage flow end A from upper and
Under each soil layer infiltration coefficient, LiIndicate that each soil layer is top-down the distance between with section of jurisdiction inner end B, unit m.
It further, further include by the distance between effective seepage flow end A and the bottom tunnel Luo Dong and effect seepage flow end A and tunnel
Height between naked hole bottom is converted, obtain seepage discharge corresponding to angle corresponding to the lateral seepage flow length in tunnel with
The relationship between height between effective seepage flow end A and the tunnel bottom Luo Dong：
In formula (8)：Q indicates seepage discharge corresponding to angle corresponding to the lateral seepage flow length in tunnel, unit m3/h；Indicate Rock And Soil dehydration quicksand Mean Speed on the outside of shield subway tunnel section of jurisdiction, unit m2/h；D θ indicates that the lateral of tunnel is seeped
Flow micro- corner of angle corresponding to length；θ indicates that the angle of corner corresponding to the lateral seepage flow length in tunnel, unit are
rad；R expression tunnel duct piece is at a distance from the bottom center of the tunnel hole Luo Dong, unit m；What Δ h was indicated is effective seepage flow end A to pipe
Head difference between the B of piece inner end, unit m；KiIndicate the infiltration coefficient of effective seepage flow end A each soil layer from top to bottom, it is single
Position is m/s；LiIndicate that each soil layer is top-down the distance between with section of jurisdiction inner end B, unit m；HiIndicate each soil layer
The top-down height between the B of section of jurisdiction inner end, unit m.
Further, by the way that the distance between effective seepage flow end A and the tunnel bottom Luo Dong and effect seepage flow end A and tunnel is naked
Formula that height between the bottom of hole is converted carries out implicit function and solves to obtain quicksand corresponding to per length section to stockpile
Area SSand。
The beneficial effects of the invention are as follows：The present invention provides Rock And Soil dehydration quicksands on the outside of a kind of shield subway tunnel section of jurisdiction
The calculation method of rate, by the average quicksand rate for collecting duct pieces of shield tunnel stitching portion；Measure shield tunnel genesis analysis
Maximum length and lateral seepage flow length；The cross-section section of jurisdiction for calculating tunnel unit length and the quicksand storage on the outside of grouting layer,
According to quicksand storage acquire per length section corresponding to quicksand stockpile area；Calculate the quicksand body stockpiled at infiltration quicksand
Accumulated amount, to obtain Rock And Soil dehydration quicksand rate on the outside of shield subway tunnel section of jurisdiction.The present invention provides a kind of shield subway tunnel
The calculation method of Rock And Soil dehydration quicksand rate on the outside of section of jurisdiction, can effectively calculate Rock And Soil dehydration quicksand on the outside of subway tunnel section of jurisdiction
Rate can effectively take measures when emergency situations are generated according to Rock And Soil dehydration quicksand rate on the outside of subway tunnel duct piece, into
Row effectively preventing reduces casualties.
Detailed description of the invention
Fig. 1 is the computing block diagram of the embodiment of the invention.
Fig. 2 is that the calculation method of Rock And Soil dehydration quicksand rate on the outside of a kind of shield subway tunnel section of jurisdiction provided by Fig. 1 is seeped
The basic schematic diagram of stream situation.
Fig. 3 is the calculation method of Rock And Soil dehydration quicksand rate on the outside of a kind of shield subway tunnel section of jurisdiction provided by Fig. 1
Dehydration quicksand calculates analysis schematic diagram.
Fig. 4 is on the outside of a kind of shield subway tunnel section of jurisdiction provided by Fig. 1 in the calculation method of Rock And Soil dehydration quicksand rate
The quicksand of selected per length section stockpiles area schematic diagram.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples：
As Figure 1-Figure 4, the present invention provides the meter of Rock And Soil dehydration quicksand rate on the outside of a kind of shield subway tunnel section of jurisdiction
Calculation method, includes the following steps：
1) the average quicksand rate of the quicksand of duct pieces of shield tunnel stitching portion is obtained.
2) maximum length and lateral seepage flow length of shield tunnel genesis analysis are measured.It should be understood that lateral seepage flow
Length refers to arc length of the flow domain along section of jurisdiction internal diameter, polar coordinate system can be established with tunnel center, with tunnel central point
It is horizontally arranged for polar axis with one for pole, it is set as positive direction in a counterclockwise direction.
3) the cross-section section of jurisdiction for calculating tunnel unit length and the quicksand storage on the outside of grouting layer, calculation formula：
In formula (1)：Q indicates quicksand storage, unit m3/h；Indicate average quicksand rate, unit m2/h；S indicates horizontal
To seepage flow length, unit m.
It should be understood that：Tunnel includes section of jurisdiction layer and grouting layer, and grouting layer is uniformly wrapped in the outside of section of jurisdiction layer, pipe
The thickness of lamella and grouting layer is respectively hgAnd hc, infiltration coefficient is respectively K1And K2.1 indicates grouting layer in Fig. 3, and 2 indicate pipe
Lamella, to calculate average infiltration coefficient
4) according to quicksand storage acquire per length section corresponding to quicksand stockpile area.It should be understood that according to
The quicksand that quicksand storage seeks the section of longitudinal unit length in tunnel stockpiles area and refers in the critical of the target soil body
Hydraulic slope icrA determining horizontal plane distance Hcr, height and polar axis shaft institute according to effective seepage flow end A apart from polar axis
The area surrounded.
5) the quicksand volume stockpiled at infiltration quicksand is calculated, calculation formula is as follows：
V=SSand×LIt is vertical (2)
In formula (2)：V indicates the quicksand volume stockpiled at infiltration quicksand, unit m3；SSandIndicate per length section
Corresponding quicksand stockpiles area, unit m2；LIt is verticalFor the maximum length of shield tunnel genesis analysis, unit m.
The average quicksand rate packets for obtaining the quicksand of duct pieces of shield tunnel stitching portion are included in the section of jurisdiction stitching portion of shield tunnel
The quicksand of exudation is collected, and records the time of collection, measures sand carrying capacity, the average quicksand of unit of account time quicksand
Amount.It should be understood that multi-group data can be measured in the average sand carrying capacity of cooling water of units of measurement time quicksand, then by multiple groups
Data carry out average calculating operation, obtain the average sand carrying capacity of unit time quicksand.It in other embodiments can also be by multi-group data
The middle biggish rejecting of deviation value, to improve precision.It, should be by the infiltration of section of jurisdiction junction in the aperture time that multi-group data is collected
Temporary dam is carried out at water flow sand.
The cross-section section of jurisdiction and the quicksand storage on the outside of grouting layer for calculating tunnel unit length further include calculating effective infiltration
End A is flowed to the infiltration coefficient between the B of section of jurisdiction inner end, and the formula of infiltration coefficient is as follows：
In formula (3)：Indicate effective seepage flow end A to the infiltration coefficient between the B of section of jurisdiction inner end；LA is fragrantIndicate effective seepage flow end
A is to the distance between section of jurisdiction inner end B, unit m；I indicates the infiltration number of plies of effective seepage flow end A each soil layer from top to bottom；
KiIndicate the infiltration coefficient of effective seepage flow end A each soil layer from top to bottom；LiIndicate each soil layer it is top-down with section of jurisdiction on the inside of
Hold the distance between B, unit m.
It should be understood that the section of jurisdiction inner end end B refers to effective seepage flow end A and tunnel center O line on the inside of section of jurisdiction
End point.Effective seepage flow end A meets one dimensional seepage model between the B of section of jurisdiction inner end, all more than AB crossing-river tunnel
Soil layer.As shown in Fig. 2, straight line a indicates that ground level, b indicate level of ground water, c indicates the level of ground water after precipitation, under level of ground water
Face is soil layer.
The calculation method that the present invention provides Rock And Soil dehydration quicksand rate on the outside of a kind of shield subway tunnel section of jurisdiction further includes root
According to Darcy's law：
V=k × i (4)
In formula (4)：V indicates quicksand rate, unit m2/h；K indicates infiltration coefficient, unit m/s；I indicates waterpower slope
Drop, unit h/m；
Rock And Soil dehydration quicksand Mean Speed on the outside of shield subway tunnel section of jurisdiction is calculated, calculation formula is as follows：
In formula (5)：Indicate that Rock And Soil dehydration quicksand is averaged quicksand rate on the outside of shield subway tunnel section of jurisdiction, unit m2/
h；Indicate effective seepage flow end A to the infiltration coefficient between the B of section of jurisdiction inner end；iWaterIndicate effective seepage flow end A to section of jurisdiction inner end B
Between hydraulic slope；I indicates the infiltration number of plies of effective seepage flow end A each soil layer from top to bottom；LA is fragrantIndicate effective seepage flow end A
To the distance between section of jurisdiction inner end B, unit m；KiIndicate the infiltration coefficient of effective seepage flow end A each soil layer from top to bottom；Li
Indicate that each soil layer is top-down the distance between with section of jurisdiction inner end B, unit m；That Δ h is indicated is effective seepage flow end A
To the head difference between the B of section of jurisdiction inner end, unit m.
Lateral seepage flow length including calculating tunnel：
S=d θ × R (6)
In formula (6)：S indicates the lateral seepage flow length in the tunnel calculated, unit m；The lateral seepage flow length in θ expression tunnel
Corresponding angle, unit rad；D θ indicates micro- corner of angle corresponding to the lateral seepage flow length in tunnel；R indicates tunnel
Section of jurisdiction is at a distance from the bottom center of the tunnel hole Luo Dong, unit m.
It should be understood that in the present embodiment, the section of jurisdiction in tunnel is in circular arc, therefore R also illustrates that section of jurisdiction apart from tunnel
Distance at the O of center.
Seepage discharge corresponding to angle corresponding to the lateral seepage flow length in tunnel is calculated, calculation formula is as follows：
In formula (7)：Q indicates seepage discharge corresponding to angle corresponding to the lateral seepage flow length in tunnel, unit m3/h；Indicate Rock And Soil dehydration quicksand Mean Speed on the outside of shield subway tunnel section of jurisdiction, unit m2/h；D θ indicates that the lateral of tunnel is seeped
Flow micro- corner of angle corresponding to length；R expression tunnel duct piece is at a distance from the bottom center of the tunnel hole Luo Dong, unit m；Δh
What is indicated is effective seepage flow end A to the head difference between the B of section of jurisdiction inner end, unit m；KiIndicate effective seepage flow end A from upper and
Under each soil layer infiltration coefficient, LiIndicate that each soil layer is top-down the distance between with section of jurisdiction inner end B, unit m.
It will be between the distance between effective seepage flow end A and the tunnel bottom Luo Dong and effect seepage flow end A and the tunnel bottom Luo Dong
Height is converted, obtain seepage discharge corresponding to angle corresponding to the lateral seepage flow length in tunnel and effective seepage flow end A with
The relationship between height between the tunnel bottom Luo Dong：
In formula (8)：Q indicates seepage discharge corresponding to angle corresponding to the lateral seepage flow length in tunnel, unit m3/h；Indicate Rock And Soil dehydration quicksand Mean Speed on the outside of shield subway tunnel section of jurisdiction, unit m2/h；D θ indicates that the lateral of tunnel is seeped
Flow micro- corner of angle corresponding to length；θ indicates that the angle of corner corresponding to the lateral seepage flow length in tunnel, unit are
rad；R expression tunnel duct piece is at a distance from the bottom center of the tunnel hole Luo Dong, unit m；What Δ h was indicated is effective seepage flow end A to pipe
Head difference between the B of piece inner end, unit m；KiIndicate the infiltration coefficient of effective seepage flow end A each soil layer from top to bottom, it is single
Position is m/s；LiIndicate that each soil layer is top-down the distance between with section of jurisdiction inner end B, unit m；HiIndicate each soil layer
The top-down height between the B of section of jurisdiction inner end, unit m.
By by the distance between effective seepage flow end A and the bottom tunnel Luo Dong and effect seepage flow end A and the bottom tunnel Luo Dong it
Between the formula converted of height carry out implicit function and solve to obtain quicksand corresponding to per length section to stockpile area SSand.It answers
When understanding, according to the distance between effective seepage flow end A and the bottom tunnel Luo Dong and effect seepage flow end A and the bottom tunnel Luo Dong it
Between the formula converted of height, H can be obtainedAlwaysThe implicit function of=f (θ), HAlwaysIt can directly measure to obtain, it is possible to directly
The quicksand for calculating unit length stockpiles area.Four streams that the quicksand amount of stockpiling should be calculated as in polar coordinate system in engineering
The sand amount of stockpiling needs to calculate the quicksand amount of stockpiling of four times of first quartile.As shown in figure 4, circle indicates tunnel, quicksand in figure
The amount of stockpiling be to show the quicksand amount of stockpiling of sand, Tu Weizhichu in figure.Since the quicksand amount of stockpiling is what the unit time was acquired, so
The numerical value acquired is exactly Rock And Soil dehydration quicksand rate on the outside of shield subway tunnel section of jurisdiction.
The present invention provides the calculation methods of Rock And Soil dehydration quicksand rate on the outside of a kind of shield subway tunnel section of jurisdiction, pass through receipts
Collect the average quicksand rate of duct pieces of shield tunnel stitching portion；Maximum length and the lateral seepage flow for measuring shield tunnel genesis analysis are long
Degree；The cross-section section of jurisdiction for calculating tunnel unit length and the quicksand storage on the outside of grouting layer, acquire unit according to quicksand storage
Quicksand corresponding to length section stockpiles area；The quicksand volume stockpiled at infiltration quicksand is calculated, thus with obtaining shield
Rock And Soil dehydration quicksand rate on the outside of iron tunnel duct piece.The present invention provides Rock And Soil dehydration stream on the outside of a kind of shield subway tunnel section of jurisdiction
The calculation method of sand coarse aggregate ratio can effectively calculate Rock And Soil dehydration quicksand rate on the outside of subway tunnel section of jurisdiction, when emergency situations generate,
It can effectively be taken measures according to Rock And Soil dehydration quicksand rate on the outside of subway tunnel duct piece, carry out effectively preventing, reduce people
Member's injures and deaths.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (7)
1. the calculation method of Rock And Soil dehydration quicksand rate on the outside of a kind of shield subway tunnel section of jurisdiction, it is characterized in that：Including following step
Suddenly：
1) the average quicksand rate of the quicksand of duct pieces of shield tunnel stitching portion is obtained；
2) maximum length and lateral seepage flow length of shield tunnel genesis analysis are measured；
3) the cross-section section of jurisdiction for calculating tunnel unit length and the quicksand storage on the outside of grouting layer, calculation formula：
In formula (1)：Q indicates quicksand storage, unit m3/h；Indicate average quicksand rate, unit m2/h；S indicates laterally to seep
Flow length, unit m；
4) according to quicksand storage acquire per length section corresponding to quicksand stockpile area；
5) the quicksand volume stockpiled at infiltration quicksand is calculated, calculation formula is as follows：
V=SSand×LIt is vertical (2)
In formula (2)：V indicates the quicksand volume stockpiled at infiltration quicksand, unit m3；SSandIndicate that per length section institute is right
The quicksand answered stockpiles area, unit m2；LIt is verticalFor the maximum length of shield tunnel genesis analysis, unit m.
2. the calculation method of Rock And Soil dehydration quicksand rate, feature on the outside of shield subway tunnel as described in claim 1 section of jurisdiction
It is：
The average quicksand rate packets for obtaining the quicksand of duct pieces of shield tunnel stitching portion include the section of jurisdiction stitching portion in shield tunnel to infiltration
Quicksand out is collected, and records the time of collection, measures sand carrying capacity, the sand carrying capacity of unit of account time quicksand.
3. the calculation method of Rock And Soil dehydration quicksand rate, feature on the outside of shield subway tunnel as described in claim 1 section of jurisdiction
It is：
The cross-section section of jurisdiction and the quicksand storage on the outside of grouting layer for calculating tunnel unit length further include calculating effective seepage flow end A
To the infiltration coefficient between the B of section of jurisdiction inner end, the formula of infiltration coefficient is as follows：
In formula (3)：Indicate effective seepage flow end A to the infiltration coefficient between the B of section of jurisdiction inner end；LABIndicate effective A pairs of seepage flow end
The distance between section of jurisdiction inner end B, unit m；I indicates the infiltration number of plies of effective seepage flow end A each soil layer from top to bottom；KiTable
It is shown with the infiltration coefficient of effect seepage flow end A each soil layer from top to bottom；LiIndicate that each soil layer is top-down with section of jurisdiction inner end B
The distance between, unit m.
4. the calculation method of Rock And Soil dehydration quicksand rate, feature on the outside of shield subway tunnel as claimed in claim 3 section of jurisdiction
It is：Including according to Darcy's law：
V=k × i (4)
In formula (4)：V indicates quicksand rate, unit m2/h；K indicates infiltration coefficient, unit m/s；I indicates hydraulic slope, single
Position is h/m；
It calculates Rock And Soil dehydration quicksand on the outside of shield subway tunnel section of jurisdiction to be averaged quicksand rate, calculation formula is as follows：
In formula (5)：Indicate that Rock And Soil dehydration quicksand is averaged quicksand rate on the outside of shield subway tunnel section of jurisdiction, unit m2/h；
Indicate effective seepage flow end A to the infiltration coefficient between the B of section of jurisdiction inner end；iWaterIndicate effective seepage flow end A between the B of section of jurisdiction inner end
Hydraulic slope；I indicates the infiltration number of plies of effective seepage flow end A each soil layer from top to bottom；LABIndicate effective seepage flow end A to section of jurisdiction
The distance between inner end B, unit m；KiIndicate the infiltration coefficient of effective seepage flow end A each soil layer from top to bottom；LiIndicate each
A soil layer is top-down the distance between with section of jurisdiction inner end B, unit m；What Δ h was indicated is effective seepage flow end A to section of jurisdiction
Head difference between the B of inner end, unit m.
5. the calculation method of Rock And Soil dehydration quicksand rate, feature on the outside of shield subway tunnel as claimed in claim 4 section of jurisdiction
It is：Lateral seepage flow length including calculating tunnel：
S=d θ × R (6)
In formula (6)：S indicates the lateral seepage flow length in the tunnel calculated, unit m；θ indicates that the lateral seepage flow length institute in tunnel is right
The angle answered, unit rad；D θ indicates micro- corner of angle corresponding to the lateral seepage flow length in tunnel；R indicates tunnel duct piece
At a distance from the bottom center of the tunnel hole Luo Dong, unit m；
Seepage discharge corresponding to angle corresponding to the lateral seepage flow length in tunnel is calculated, calculation formula is as follows：
In formula (7)：Q indicates seepage discharge corresponding to angle corresponding to the lateral seepage flow length in tunnel, unit m3/h；Table
Show Rock And Soil dehydration quicksand Mean Speed, unit m on the outside of shield subway tunnel section of jurisdiction2/h；The lateral seepage flow in d θ expression tunnel
Micro- corner of angle corresponding to length；R expression tunnel duct piece is at a distance from the bottom center of the tunnel hole Luo Dong, unit m；Δ h table
What is shown is effective seepage flow end A to the hydraulic slope between the B of section of jurisdiction inner end, unit h/m；KiIndicate effective seepage flow end A from upper
The infiltration coefficient of each soil layer, L under andiIndicate that each soil layer is top-down the distance between with section of jurisdiction inner end B, unit is
m。
6. the calculation method of Rock And Soil dehydration quicksand rate, feature on the outside of shield subway tunnel as claimed in claim 5 section of jurisdiction
It is：Including by the distance between effective seepage flow end A and the tunnel bottom Luo Dong and effect seepage flow end A and the tunnel bottom Luo Dong between height
Degree is converted, and seepage discharge corresponding to angle corresponding to the lateral seepage flow length in tunnel and effective seepage flow end A and tunnel are obtained
The relationship between height between the road bottom Luo Dong：
In formula (8)：Q indicates seepage discharge corresponding to angle corresponding to the lateral seepage flow length in tunnel, unit m3/h；Table
Show Rock And Soil dehydration quicksand Mean Speed, unit m on the outside of shield subway tunnel section of jurisdiction2/h；The lateral seepage flow in d θ expression tunnel
Micro- corner of angle corresponding to length；θ indicates the angle of corner corresponding to the lateral seepage flow length in tunnel, unit rad；
R expression tunnel duct piece is at a distance from the bottom center of the tunnel hole Luo Dong, unit m；What Δ h was indicated is effective seepage flow end A in section of jurisdiction
Hydraulic slope between the B of side, unit h/m；KiIndicate the infiltration coefficient of effective seepage flow end A each soil layer from top to bottom, it is single
Position is m/s；LiIndicate that each soil layer is top-down the distance between with section of jurisdiction inner end B, unit m；HiIndicate each soil layer
The top-down height between the B of section of jurisdiction inner end, unit m.
7. the calculation method of Rock And Soil dehydration quicksand rate, feature on the outside of shield subway tunnel as claimed in claim 6 section of jurisdiction
It is：By by the distance between effective seepage flow end A and the tunnel bottom Luo Dong and effect seepage flow end A and the tunnel bottom Luo Dong between height
The formula converted is spent to carry out implicit function and solve to obtain quicksand corresponding to per length section to stockpile area SSand。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810856423.1A CN108920417B (en) | 2018-07-31 | 2018-07-31 | Method for calculating water flow sand loss rate of rock and soil mass outside shield subway tunnel segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810856423.1A CN108920417B (en) | 2018-07-31 | 2018-07-31 | Method for calculating water flow sand loss rate of rock and soil mass outside shield subway tunnel segment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108920417A true CN108920417A (en) | 2018-11-30 |
| CN108920417B CN108920417B (en) | 2022-03-15 |
Family
ID=64393300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810856423.1A Active CN108920417B (en) | 2018-07-31 | 2018-07-31 | Method for calculating water flow sand loss rate of rock and soil mass outside shield subway tunnel segment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108920417B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991025A (en) * | 2019-04-08 | 2019-07-09 | 中国矿业大学(北京) | A kind of subway segment deviation automatic measurement target and its measurement method |
| CN111832110A (en) * | 2020-07-17 | 2020-10-27 | 中南大学 | Calculation method for karst area circular tunnel seepage field analytic solution |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005282265A (en) * | 2004-03-30 | 2005-10-13 | Ohbayashi Corp | Shield machine |
| CN205977269U (en) * | 2016-07-29 | 2017-02-22 | 中国铁道科学研究院铁道建筑研究所 | Tunnel drainage blind pipe and tunnel drainage system |
-
2018
- 2018-07-31 CN CN201810856423.1A patent/CN108920417B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005282265A (en) * | 2004-03-30 | 2005-10-13 | Ohbayashi Corp | Shield machine |
| CN205977269U (en) * | 2016-07-29 | 2017-02-22 | 中国铁道科学研究院铁道建筑研究所 | Tunnel drainage blind pipe and tunnel drainage system |
Non-Patent Citations (2)
| Title |
|---|
| SHENGBIN HU ET AL.: "Optimization Research on GPR Detecting of Grouting behind Shield Tunnel S in Water-soaked Sand and Pebble Stratum", 《2016 INTERNATIONAL CONFERENCE ON INTELLIGENT TRANSPORTATION, BIG DATA & SMART CITY》 * |
| 王红伟: "砂性土地基超深基坑支护技术研究", 《科学中国人》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991025A (en) * | 2019-04-08 | 2019-07-09 | 中国矿业大学(北京) | A kind of subway segment deviation automatic measurement target and its measurement method |
| CN109991025B (en) * | 2019-04-08 | 2023-11-14 | 中国矿业大学(北京) | Automatic subway segment deviation measuring target and measuring method thereof |
| CN111832110A (en) * | 2020-07-17 | 2020-10-27 | 中南大学 | Calculation method for karst area circular tunnel seepage field analytic solution |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108920417B (en) | 2022-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3220586U (en) | Equipment for measuring the hydraulic conductivity of various types of earth and sand | |
| WO2021174794A1 (en) | Monitoring and verifying system and method for overall failure mode of soil-rock dual-element side slope | |
| CN102445307B (en) | Method for measuring flow rate and flow direction of single-well underground water and leaking point of reservoir, and measuring device thereof | |
| CN108254032A (en) | River ultrasonic wave time difference method method of calculating flux | |
| CN103323887B (en) | The appraisal procedure of a kind of Coal Exploitation Dynamic stability district coal-seam gas reserves and system | |
| WO2019153782A1 (en) | Apparatus and method for quickly measuring multiple sandy soil infiltration coefficients | |
| CN105092798B (en) | Recharge system and test method in one kind simulation varying head permeable ground diving stratum room | |
| CN202494442U (en) | Stratum layering and settlement measuring device | |
| CN104632244B (en) | Method for determining influences of land subsidence on subway tunnel settlement and protecting tunnel structure | |
| CN108920417A (en) | The calculation method of Rock And Soil dehydration quicksand rate on the outside of a kind of shield subway tunnel section of jurisdiction | |
| CN104615820A (en) | Flow field analysis method for earth and rockfill dam seepage flow monitoring and calculation | |
| CN106526125A (en) | Dual-varying-slope erosion groove and interflow determining instrument and determining method thereof | |
| CN110046470A (en) | A kind of shield driving causes ground settlement method for determination of amount after work | |
| CN108038269A (en) | Mountainous Building group's earthworks calculation concocting method based on BIM | |
| CN110376354A (en) | Determine the experimental rig and method of shield tunnel buoyancy | |
| CN102444111A (en) | Underground cave radiography detecting method | |
| CN106939593A (en) | One kind closes on both wired construction of diaphragm wall technique | |
| CN106192865B (en) | A kind of mud-rock flow Blaps femaralis computational methods and its application | |
| CN108106687A (en) | A kind of bedrock underground water drift net containing soft interlayer probes into method and double-capsule water-stop | |
| CN108221842A (en) | Dam flow velocity, method of calculating flux are crossed in mud-rock flow grid dam | |
| CN103471978B (en) | Face dam leakage monitoring of structures on deep covering layer | |
| CN106150481B (en) | Profile-log of water injection measurement method based on natural gamma baseline | |
| CN106053014A (en) | River erosion and deposition depth detection device and detection method | |
| CN116592938A (en) | Multifunctional observation tube for earth and rockfill dam | |
| CN105698853B (en) | The detection method of country rock Effect of Bolt-grouting Support during a kind of working face extraction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |