CN105649641B - The axial line control method of shield anxious curve construction in upper-soft lower-hard ground - Google Patents
The axial line control method of shield anxious curve construction in upper-soft lower-hard ground Download PDFInfo
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- CN105649641B CN105649641B CN201610069704.3A CN201610069704A CN105649641B CN 105649641 B CN105649641 B CN 105649641B CN 201610069704 A CN201610069704 A CN 201610069704A CN 105649641 B CN105649641 B CN 105649641B
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- brim
- hat
- shield
- hard ground
- axial line
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/02—Investigation of foundation soil in situ before construction work
- E02D1/022—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present invention provides a kind of axial line control method of shield anxious curve construction in upper-soft lower-hard ground, including：The first step, along shield route carry out stratum investigation；Second step, the brim of a hat device is installed on shield machine, the brim of a hat device includes at least two sets of fixed cells, at least rotating unit, three sets of synchronization telescope units and the brim of a hat, and fixed cell is installed in the inner side of shield machine housing；The brim of a hat along fixed cell under the drive of rotating unit in shield internal rotating to optional position, and by the brim of a hat release length number come successively adjust turning rectify a deviation；3rd step, shield machine anxious curve construction in upper-soft lower-hard ground is controlled using the brim of a hat device.The axial line control for causing shield and axis correction are become more nimbly and freely, to add axial line control quality by the present invention, reduce the amount of backbreaking caused by anxious curve correction.
Description
Technical field
The present invention relates to a kind of axial line control technology of shield tunnel project technical field of construction, in particular it relates to a kind of
The axial line control method of shield anxious curve construction in upper-soft lower-hard ground.
Background technology
Shield method has the characteristics of driving speed is fast, construction infection is small, labor intensity is low, is the main of big-and-middle-sized tunnel
Form of construction work.In the engineering method, shield body is a linear cylindrical shape rigid body, and the straight line of shield fuselage is difficult and anxious curve
Tangential direction fits like a glove, so bring and backbreak, soil disturbance scope increase, surface subsidence increase the problems such as, especially for upper
Soft lower hard formation, soft or hard soil layer cutting difficulty is different, and surface subsidence Deformation control difficulty is bigger, so, shield machine is upper soft
The axial line control of anxious curve construction is one of difficult point in shield-tunneling construction in lower hard formation.
Find by prior art documents, China Patent No. 200810226716.8, patent publication No. is
101737058A, patent name：Small-radius shield tunnel construction technology, the invention utilize backbreak knife, articulated mounting；Segment selection
And assembly；Shield attitude control in real time and adjustment；And synchronous grouting and secondary supplement slip casting with realizing minor radius shield
The Construction control in structure tunnel, but the invention is using backbreaking as cost and need timely slip casting filling to backbreak hole and to carry out secondary
Slip casting carries out axial line control.However, if the amount of backbreaking is excessive, synchronous grouting not in time or secondary grouting is insufficient will be big
Big increase surface subsidence.And the invention is only applicable under the conditions of simple stratum, do not account under complex geological condition, especially
It is the condition for shield crossing upper-soft lower-hard ground and minor radius urgency curve engineering.Can not be very using the method for the patent of invention
Solve the surface subsidence in upper-soft lower-hard ground around anxious curve well and be difficult to ensure that axis construction quality.So existing skill
Art has that axial line control is undesirable, the amount of backbreaking is big in upper-soft lower-hard ground in anxious curve work progress and what surface subsidence was big lacks
Point.
The content of the invention
For deficiency of the prior art and defect, the purpose of the present invention is to propose to a kind of shield in upper-soft lower-hard ground
The axial line control method of anxious curve construction, this method change prior art after shield machine deflects during anxious curve is constructed
The passive correction mode rectified a deviation again, but employ a kind of shield repacking, i.e., install the brim of a hat device additional on shield housing
Actively rectify a deviation mode, can effectively reduce the thrust ratio in each region of hydraulic jack so that each region thrust is more coordinated, greatly
Amplitude reduces the cross component force of section of jurisdiction, it is ensured that the continuous correction of shield anxious curve construction in upper-soft lower-hard ground, so as to reduce
The amount of backbreaking, it is ensured that axial line control quality.
The present invention is achieved by the following technical solutions：
A kind of axial line control method of shield anxious curve construction in upper-soft lower-hard ground, comprises the following steps：
The first step, along shield route carry out stratum investigation：
Row's exploratory hole is respectively arranged in tunnel axis both sides；
The actual measurement SPT blow count N of the soil body in exploration context is obtained by standard penetration test (SPT), if actual measurement SPT blow count N≤
30, weak soil is divided into, if actual measurement SPT blow count N>30, it is divided into pan soil；
Second step, the brim of a hat device is installed on shield machine, the brim of a hat device includes at least two sets of fixed cells, rotates list
Member, at least three sets of synchronization telescope units and the brim of a hat, fixed cell is installed in the inner side of shield machine housing；By rotating unit and fixation
Unit activity connects so that rotating unit can realize 360 degree of rotations around the axis of shield machine；By the rear end of synchronization telescope unit with
The front end of rotating unit is fixedly connected；The front end of every set synchronization telescope unit is fixedly connected with the rear end of the brim of a hat；The brim of a hat along
Fixed cell under the drive of rotating unit in shield internal rotating to optional position, and by the brim of a hat release length number come
Successively regulation, which is turned, rectifies a deviation；
3rd step, shield machine anxious curve construction in upper-soft lower-hard ground is controlled using the brim of a hat device：
(1), in the construction of anxious curve, upper-soft lower-hard ground distribution is obtained using the first step, then according to upper soft lower hard place
Layer is distributed to determine the elongation of the brim of a hat in the brim of a hat device of second step design；
(2), in the brim of a hat device stretching direction of the brim of a hat according to specific construction operating mode：
Shield urgency curve adjusts：When shield when anxious curve is constructed, it is necessary to during to left sharp turn, the brim of a hat device is rotated to
Simultaneously release the brim of a hat in shield body left side；When shield machine bends to right, the brim of a hat device is rotated on the right side of shield body and released
The brim of a hat；
Shield plane is rectified a deviation：When left avertence phenomenon occurs in shield axis, the brim of a hat device is rotated on the right side of shield body simultaneously
Release the brim of a hat；When inclined phenomenon to the right occurs in shield axis, the brim of a hat device is rotated on the left of shield body and releases the brim of a hat；
Shield is vertically rectified a deviation：When new line phenomenon occurs in shield axis, the brim of a hat device is rotated on the downside of shield body simultaneously
Release the brim of a hat；When bowing phenomena occurs in shield axis, the brim of a hat device is rotated on the upside of shield body and releases the brim of a hat.
Preferably, in the first step, in tunnel axis both sides away from one row's exploratory hole of each arrangement, adjacent exploratory hole at axis 3-4m
Interval 40-50m, exploration hole depth be tunnel bottom below 2 times of tunnel diameters.
Preferably, in second step, the fixed cell be arranged in parallel and had between the two neighboring fixed cell between one
Away from；The synchronization telescope unit is arranged in parallel and adjacent spacing is equal.The spacing can be 300-500mm.
It is furthermore preferred that the fixed cell includes base-plate, bearing riser and steel track, wherein：The base-plate
One side with being fixedly connected on the inside of shield machine housing；One end of the bearing riser is welded on the another side of the base-plate
The upper, other end on the inside of the steel track with being fixedly connected.
It is highly preferred that the base-plate both sides are provided with bolt hole, bolt realizes base-plate and shield by bolt hole
Casing body is fixedly connected；Base-plate head and the tail are weldingly connected annular in shape described in polylith, and the center of circle of the ring-type is located at shield machine
Axis on.The base-plate can use thickness 10-12mm steel plate.
It is furthermore preferred that bearing riser head and the tail are weldingly connected annularly described in polylith, and branch described in the center of circle of the ring and polylith
The center of circle for the ring that seat bottom plate is formed overlaps.The bearing riser can use thickness 10-12mm steel plate.
It is highly preferred that the cross section of the steel track is rectangle, steel track head and the tail are weldingly connected annular in shape described in polylith, and
The center of circle for the ring-type that the center of circle of the ring-type is formed with base-plate described in polylith overlaps.
Preferably, the rotating unit includes chassis, leading truck, main wheel, side wheel, return pulley and brake clip, wherein：It is described to lead
It is installed in frame, the return pulley, the brake clip on the chassis；The main wheel and the side wheel are installed in the guiding
On frame, and the main wheel is arranged at the inner side of the steel track, and the side wheel is arranged at the arranged on left and right sides of the steel track, institute
The outside that return pulley is arranged at the steel track is stated, the brake clip is arranged at the vertical pivoting angle of the steel track；Pass through control
Whether brake clip contact with the steel track controls the rotation of the rotating unit.
It is highly preferred that the synchronization telescope unit includes hydraulic jack, ring flange and flange gasket, wherein：The hydraulic oil
The rear end of cylinder is fixedly connected with the rotating unit, and the front end of the hydraulic jack is connected with the brim of a hat, and in the hydraulic pressure
The connecting portion of oil cylinder and the brim of a hat sets the ring flange and the flange gasket.
Formed it is highly preferred that the brim of a hat fixes bottom plate by the brim of a hat steel plate and the brim of a hat, wherein：The brim of a hat is fixed on bottom plate
Bolt hole is provided with, bolt realizes the synchronization telescope unit and institute through the bolt hole on the bolt hole and the ring flange
State being connected for the brim of a hat；The brim of a hat steel plate is fixed bottom plate with the brim of a hat and welded together, and the brim of a hat steel plate and institute
State the brim of a hat and fix the connection of bottom plate vertical welding.
It is highly preferred that the brim of a hat steel plate bending is into the circular arc consistent with shield cutter external diameter；Before the brim of a hat steel plate
Hold and fix bottom plate for a basil, rear end with the brim of a hat and be fixedly connected.Preferably, the circular arc is 60 ° of circular arc；The basil
For 45 ° of the basil.
The present invention operation principle be：
When the brim of a hat device is not used by, the brim of a hat device is retracted in shield using the telescopic unit.Work as shield
Structure need turn when, the brim of a hat device can along the fixed cell under the drive of the rotating unit inside shield
360 ° rotate to optional position.When rotating to ideal position, the brim of a hat is shifted onto shield machine is external, the number of length released
Determined according to upper-soft lower-hard ground distribution situation.Shield is in tunneling process, and due to the barrier effect of the brim of a hat, the soil body can be right
The brim of a hat acts power, so that the gap of the side-thrust of shield two increases, turns rapider.The brim of a hat releases length
Bigger, interaction is bigger, and two side-thrust differences are bigger, and the radian that shield is turned is bigger.Therefore when anxious in upper-soft lower-hard ground
When curve is constructed, shield is needed continuously turn to side to rectify a deviation, and the brim of a hat device direction is also released in the side, and
By the brim of a hat release length number come successively adjust turning rectify a deviation.
Compared with prior art and other Patents, the present invention has the advantage that：
The present invention designs the brim of a hat device from the repacking of Suporting structure, overcomes existing construction method in upper-soft lower-hard ground
Middle anxious curve axial line control is of low quality, correction not in time, the amount of backbreaking excessive the shortcomings of causing surface subsidence big and deficiency.It is described
The brim of a hat device is not merely that can be used in the case where tunnel axis is anxious curve, for tunnel axis in shield tunneling process
There is deviation, in the case of need to being rectified a deviation, can also use.The present apparatus becomes the axial line control for causing shield and axis correction
Obtain more nimbly and freely, adds axial line control quality, reduces the amount of backbreaking caused by anxious curve correction.
Brief description of the drawings
The detailed description made by reading with reference to the following drawings to non-limiting example, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the anxious curve (radius of one embodiment of the present invention：350m) arrangement of prospect hole figure；
Fig. 2 is the shield crossing upper-soft lower-hard ground schematic diagram of one embodiment of the present invention；
Fig. 3 is the brim of a hat device general illustration of one embodiment of the present invention；
Fig. 4 is the fixed cell vertical section schematic diagram of the brim of a hat device of one embodiment of the present invention；
Fig. 5 is the rotating unit schematic diagram of the brim of a hat device of one embodiment of the present invention；
Fig. 6 is the synchronization telescope cell schematics of the brim of a hat device of one embodiment of the present invention；
Fig. 7 is the brim of a hat schematic perspective view of the brim of a hat device of one embodiment of the present invention；
Fig. 8 is the schematic diagram of the brim of a hat device in shield excavation machine of one embodiment of the present invention；
Fig. 9 is working state schematic representation of the brim of a hat device of one embodiment of the present invention in shield；
In figure：
001 it is upper strata weak soil, 002 be lower floor's pan soil, 003 be shield tunnel, 004 be ground, 01 is the brim of a hat device；
1 it is fixed cell, 2 be rotating unit, 3 be synchronization telescope unit, 4 be the brim of a hat, 5 be shield housing, 6 is shield knife
Disk, 7 are thrust；
101 it is base-plate, 102 be bearing riser, 103 be steel track, 104 is bolt；
201 it is chassis, 202 be leading truck, 203 be main wheel, 204 be side wheel, 205 be return pulley, 206 is brake clip；
301 it is hydraulic jack, 302 be ring flange, 303 be flange gasket, 304 is bolt；
401 it is the brim of a hat steel plate, 402 is that the brim of a hat fixes bottom plate, 403 is bolt hole.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
With reference to Fig. 1-Fig. 9, the present invention will be further described with embodiment.
A kind of axial line control method of shield anxious curve construction in upper-soft lower-hard ground, specific implementation step are as follows：
The first step, along shield route carry out stratum investigation
(1) as shown in figure 1, anxious sweep is 350m, in tunnel axis both sides away from exploratory hole is arranged at axis 4m, per side
The interval 50m of exploratory hole, exploration hole depth are 2 times of tunnel diameters below tunnel bottom；
(2) obtain surveying SPT blow count N by standard penetration test (SPT), if actual measurement SPT blow count N≤30, are divided into soft
Soil, if actual measurement SPT blow count N>30, it is divided into pan soil；Soft or hard distribution of strata situation is found out, as shown in Fig. 2 including：On
Layer weak soil 001, lower floor's pan soil 002, shield tunnel 003, ground 004.
Second step, the brim of a hat device 01 is installed on shield machine
As shown in Figure 3：
(1) fixed cell 1 is installed in the inner side of shield housing 5；
(2) rotating unit 2 is flexibly connected with fixed cell 1；
(3) synchronization telescope unit 3 is fixedly connected with rotating unit 2；
(4) the brim of a hat device 4 is fixedly connected with synchronization telescope unit 3；
Wherein：The fixed cell 1 shares 2 sets, and the inner side of shield housing 5 is fixed on bolt 104, and two sets fixed single
Member 1 be arranged in parallel and spacing is 300mm；The rotating unit 2 is flexibly connected with the fixed cell 1 so that the rotating unit
2 can be around 360 degree of rotations of axis of the shield machine；The synchronization telescope unit 3 shares three sets, three sets of phases of synchronization telescope unit 3
Mutually it be arranged in parallel and adjacent spacing is equal；The rear end of the synchronization telescope unit 3 is often covered to weld with the front end of the rotating unit 2
Connect；The front end for often covering the synchronization telescope unit 3 is fixedly connected with the rear end of the brim of a hat 4.
As shown in figure 4, in a preferred embodiment, the fixed cell 1 includes base-plate 101, the and of bearing riser 102
Steel track 103, wherein, the one side of the base-plate 101 is fixedly connected with the inner side of the shield housing 5；The bearing erects
One end of plate 102 is welded on the another side of the base-plate 101, the other end and the rail of the bearing riser 102
The inner side in road 103 is fixedly connected；
Specifically：
The base-plate 101 is the steel plate that thickness is 12mm, and both sides are provided with bolt hole；The head and the tail of polylith base-plate 101
It is weldingly connected annular in shape, the center of circle of the ring is located on the axis of shield machine；
The bearing riser 102 is the steel plate that thickness is 10mm, and the head and the tail of polylith bearing riser 102 are weldingly connected annularly,
And the center of circle of ring-type that the center of circle of the ring is formed with base-plate described in polylith 101 overlaps；
The cross section of the steel track 103 is rectangle, and the head and the tail of polylith steel track 103 are weldingly connected annularly, and the ring
The center of circle for the ring-type that the center of circle is also formed with base-plate described in polylith 101 overlaps；
The base-plate 101, the bearing riser 102, the steel track 103 use fillet weld seam, weld bead height
8mm；The bolt 104 is M20 bolts.
As shown in figure 5, in a preferred embodiment, the rotating unit 2 includes chassis 201, leading truck 202, main wheel
203rd, side wheel 204, return pulley 205 and brake clip 206, wherein：The leading truck 202, the return pulley 205, the brake clip 206 are equal
On the chassis 201, the main wheel 203 and the side wheel 204 are arranged on the leading truck 202, and the main wheel
203 are located at positioned at the inner side of steel track 103, the side wheel 204 positioned at the left and right sides of steel track 103, the return pulley 205
The outside of steel track 103, the brake clip 206 are located at the vertical pivoting angle of steel track 103；By controlling the brake clip
Whether 206 contacts with the steel track 103 can control the rotation of the rotating unit 2；
Specifically：
The main wheel 203 is made up of polyurethane or nylon, its diameter 50mm, the wide 45mm of wheel；
The side wheel 204 is made up of polyurethane or nylon, its diameter 60mm, the wide 25mm of wheel；
The return pulley 205 is made up of polyurethane or nylon, its diameter 25mm, the wide 45mm of wheel；
The clip 206 is made up of specialty fibers material.
As shown in fig. 6, in a preferred embodiment, the synchronization telescope unit 3 includes hydraulic jack 301, ring flange 302
With flange gasket 303, wherein：The rear end of hydraulic jack 301 is fixedly connected with the rotating unit 2, the hydraulic jack 301
Front end is connected by ring flange 302 and flange gasket 303 with the brim of a hat 4 using bolt 304；
Specifically：
A diameter of 100mm of the hydraulic jack 301, a length of 600mm；
The external diameter of the ring flange 302 is 220mm, inside nominal diameter 100mm, thickness 22mm, material 20#；It is described
Bolt 304 is 4 M18 bolts.
As shown in fig. 7, in a preferred embodiment, the brim of a hat 4 fixes 402 groups of bottom plate by the brim of a hat steel plate 401 and the brim of a hat
Into, wherein：The brim of a hat steel plate 401 is fixed bottom plate 402 with the brim of a hat and welded together, high using fillet weld seam, weld seam
Spend 8mm；
Specifically：
The brim of a hat steel plate 401 be one piece of thickness be 30mm, 1/6th that width 300mm, length are shield circumference
Steel plate, for steel plate bending into the 60 ° circular arcs consistent with the external diameter of shield cutter 6, the front end of the brim of a hat steel plate 401 processes sword at 45 °
Angle, rear end are fixed bottom plate 402 with the brim of a hat and welded；
The front end of the brim of a hat fixation bottom plate 402 is welded with the brim of a hat steel plate 401, rear end is by being arranged on the brim of a hat
Bolt hole 403 on fixed bottom plate 402 is connected with the ring flange 301 by bolt 304, wherein the brim of a hat steel plate 401 and
The brim of a hat fixes bottom plate vertical 402.
3rd step, shield machine anxious curve construction in upper-soft lower-hard ground is controlled using the brim of a hat device 01：
1st, in the construction of anxious curve, upper-soft lower-hard ground distribution is obtained and then according to upper-soft lower-hard ground point using the first step
Cloth come determine second step design the brim of a hat device 01 in the brim of a hat 4 elongation；
2nd, the stretching direction of the brim of a hat 4 is needed according to specific construction operating mode in the brim of a hat device 01, specific as follows：
(1) shield urgency curve adjusts
When shield when anxious curve is constructed, it is necessary to when to left sharp turn, the brim of a hat device 01 is rotated into shield body
Simultaneously release the brim of a hat 4 in left side；It can similarly obtain, when shield machine bends to right, the brim of a hat device 01 is rotated on the right side of shield body
And release the brim of a hat 4；
(2) shield plane is rectified a deviation
If left avertence phenomenon occurs in shield axis, the brim of a hat device 01 is rotated on the right side of shield body and releases the brim of a hat 4；Together
Li Ke get, if inclined phenomenon to the right occurs in shield axis, the brim of a hat device 01 is rotated on the left of shield body and releases the brim of a hat 4；
(3) shield is vertically rectified a deviation
If new line phenomenon occurs in shield axis, the brim of a hat device 01 is rotated on the downside of shield body and releases the brim of a hat 4；Together
Li Ke get, if bowing phenomena occurs in shield axis, the brim of a hat device 01 is rotated on the upside of shield body and releases the brim of a hat 4.
The operation principle of the above method：When the brim of a hat device 01 is not used by, the brim of a hat device 01 utilizes the liquid
Compressing cylinder 3 is retracted in shield.When shield needs to turn, the brim of a hat device 01 can be along the fixed cell 1 in institute
State under the drive of rotating unit 2 inside shield 360 ° and rotate to optional position.When rotating to ideal position, by controlling liquid
Compressing cylinder 3 shifts the brim of a hat 4 onto that shield machine is external, release length number determined according to upper-soft lower-hard ground distribution situation.
Shield is in tunneling process, and due to the barrier effect of the brim of a hat 4, the soil body can act power to the brim of a hat 4, so that shield
The gap of the side-thrust of structure two increases, and turns rapider, as shown in Figure 9.The release of the brim of a hat 4 length is bigger, and interaction is got over
Greatly, two side-thrust differences are bigger, and the radian that shield is turned is bigger.Therefore when the anxious curve construction in upper-soft lower-hard ground, shield
Need continuously turn to side to rectify a deviation, and the brim of a hat device 01 is also released in the side, and length is released by the brim of a hat 4
Number come successively adjust correction.
The present invention designs the brim of a hat device from the repacking of Suporting structure, overcomes existing construction method in upper-soft lower-hard ground
Middle anxious curve axial line control is of low quality, correction not in time, the amount of backbreaking excessive the shortcomings of causing surface subsidence big and deficiency.It is described
The brim of a hat device is not merely that can be used in the case where tunnel axis is anxious curve, for tunnel axis in shield tunneling process
There is deviation, in the case of need to being rectified a deviation, can also use.The brim of a hat device causes the axial line control of shield and axis to entangle
Become more nimbly and freely, to add axial line control quality partially, reduce the amount of backbreaking caused by anxious curve correction.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (10)
1. the axial line control method of a kind of shield anxious curve construction in upper-soft lower-hard ground, it is characterised in that including following step
Suddenly：
The first step, along shield route carry out stratum investigation：
Row's exploratory hole is respectively arranged in tunnel axis both sides；
The actual measurement SPT blow count N of the soil body in exploration context is obtained by standard penetration test (SPT), if actual measurement SPT blow count N≤30,
Weak soil is divided into, if actual measurement SPT blow count N>30, it is divided into pan soil；
Second step, on shield machine install the brim of a hat device, the brim of a hat device include at least two sets of fixed cells, rotating unit,
At least three sets of synchronization telescope units and the brim of a hat, fixed cell is installed in the inner side of shield machine housing；By rotating unit and fixed list
Member is flexibly connected so that rotating unit can realize 360 degree of rotations around the axis of shield machine；By the rear end of synchronization telescope unit with turning
The front end of moving cell is fixedly connected；The front end of every set synchronization telescope unit is fixedly connected with the rear end of the brim of a hat；The brim of a hat is along admittedly
Order member under the drive of rotating unit in shield internal rotating to optional position, and by the brim of a hat release length number connect
Continuous constantly regulate, which is turned, rectifies a deviation；
3rd step, shield machine anxious curve construction in upper-soft lower-hard ground is controlled using the brim of a hat device：
(1), in the construction of anxious curve, upper-soft lower-hard ground distribution is obtained using the first step, then according to upper-soft lower-hard ground point
Cloth come determine second step design the brim of a hat device in the brim of a hat elongation；
(2), in the brim of a hat device stretching direction of the brim of a hat according to specific construction operating mode：
Shield urgency curve adjusts：When shield when anxious curve is constructed, it is necessary to during to left sharp turn, the brim of a hat device is rotated into shield
Simultaneously release the brim of a hat in body left side；When shield machine bends to right, the brim of a hat device is rotated on the right side of shield body and releases the brim of a hat；
Shield plane is rectified a deviation：When left avertence phenomenon occurs in shield axis, the brim of a hat device is rotated on the right side of shield body and released
The brim of a hat；When inclined phenomenon to the right occurs in shield axis, the brim of a hat device is rotated on the left of shield body and releases the brim of a hat；
Shield is vertically rectified a deviation：When new line phenomenon occurs in shield axis, the brim of a hat device is rotated on the downside of shield body and released
The brim of a hat；When bowing phenomena occurs in shield axis, the brim of a hat device is rotated on the upside of shield body and releases the brim of a hat.
2. a kind of axial line control method of shield according to claim 1 anxious curve construction in upper-soft lower-hard ground, its
It is characterised by, in second step, the fixed cell be arranged in parallel and has a spacing between the two neighboring fixed cell；It is described
Synchronization telescope unit is arranged in parallel and adjacent spacing is equal.
3. a kind of axial line control method of shield according to claim 1 anxious curve construction in upper-soft lower-hard ground, its
It is characterised by, the fixed cell includes base-plate, bearing riser and steel track, wherein：The one side of the base-plate with
It is fixedly connected on the inside of shield machine housing；One end of the bearing riser is welded on the another side of the base-plate, is another
End on the inside of the steel track with being fixedly connected.
4. a kind of axial line control method of shield according to claim 3 anxious curve construction in upper-soft lower-hard ground, its
It is characterised by, the base-plate both sides are provided with bolt hole, and bolt realizes base-plate and shield machine housing by bolt hole
It is fixedly connected；Base-plate head and the tail are weldingly connected annular in shape described in polylith, and the center of circle of the ring-type is located on the axis of shield machine.
5. a kind of axial line control method of shield according to claim 4 anxious curve construction in upper-soft lower-hard ground, its
It is characterised by, bearing riser head and the tail are weldingly connected annular in shape described in polylith, and base-plate described in the center of circle of the ring-type and polylith
The center of circle of the ring-type of formation overlaps.
6. a kind of axial line control method of shield according to claim 4 anxious curve construction in upper-soft lower-hard ground, its
It is characterised by, the cross section of the steel track is rectangle, and steel track head and the tail are weldingly connected annular in shape described in polylith, and the ring-type
The center of circle for the ring-type that the center of circle is formed with base-plate described in polylith overlaps.
A kind of 7. axial line control of the anxious curve construction in upper-soft lower-hard ground of shield according to claim any one of 3-6
Method, it is characterised in that the rotating unit includes chassis, leading truck, main wheel, side wheel, return pulley and brake clip, wherein：It is described
Leading truck, the return pulley, the brake clip are installed on the chassis；The main wheel and the side wheel are installed in described lead
To on frame, and the main wheel is arranged at the inner side of the steel track, and the side wheel is arranged at the arranged on left and right sides of the steel track,
The return pulley is arranged at the outside of the steel track, and the brake clip is arranged at the vertical pivoting angle of the steel track；Pass through control
Make whether brake clip contact with the steel track controls the rotation of the rotating unit.
A kind of 8. axial line control of the anxious curve construction in upper-soft lower-hard ground of shield according to claim any one of 1-6
Method, it is characterised in that the synchronization telescope unit includes hydraulic jack, ring flange and flange gasket, wherein：The hydraulic jack
Rear end be fixedly connected with the rotating unit, the front end of the hydraulic jack is connected with the brim of a hat, and in the hydraulic oil
The connecting portion of cylinder and the brim of a hat sets the ring flange and the flange gasket.
9. a kind of axial line control method of shield according to claim 8 anxious curve construction in upper-soft lower-hard ground, its
It is characterised by, the brim of a hat is fixed bottom plate by the brim of a hat steel plate and the brim of a hat and formed, wherein：The brim of a hat is fixed on bottom plate and is provided with spiral shell
Keyhole, bolt realize the synchronization telescope unit and the brim of a hat through the bolt hole on the bolt hole and the ring flange
It is connected；The brim of a hat steel plate is fixed bottom plate with the brim of a hat and welded together, and the brim of a hat steel plate is consolidated with the brim of a hat
Determine the connection of bottom plate vertical welding.
10. a kind of axial line control method of shield according to claim 9 anxious curve construction in upper-soft lower-hard ground, its
It is characterised by, the brim of a hat steel plate bending is into the circular arc consistent with shield cutter external diameter；The front end of the brim of a hat steel plate is a sword
Angle, rear end are fixed bottom plate with the brim of a hat and are fixedly connected.
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| CN201610069704.3A CN105649641B (en) | 2016-02-01 | 2016-02-01 | The axial line control method of shield anxious curve construction in upper-soft lower-hard ground |
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| CN201610069704.3A CN105649641B (en) | 2016-02-01 | 2016-02-01 | The axial line control method of shield anxious curve construction in upper-soft lower-hard ground |
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| CN105649641B true CN105649641B (en) | 2017-12-08 |
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Families Citing this family (5)
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| CN107269276B (en) * | 2017-06-19 | 2019-09-06 | 中国矿业大学 | A kind of driving positioning system and method for bend construction |
| CN107859029B (en) * | 2017-10-30 | 2019-08-13 | 中交疏浚技术装备国家工程研究中心有限公司 | It is a kind of sea deep cement soil mixer ship processor bottom out judgment method |
| CN109973101A (en) * | 2017-12-27 | 2019-07-05 | 苏州唐锟辰新能源科技有限公司 | A kind of regulating device of cutter head of shield machine |
| CN111852487A (en) * | 2020-06-09 | 2020-10-30 | 中铁工程装备集团有限公司 | Stratum instability prevention type tunneling device and construction method thereof |
| CN112726440B (en) * | 2020-12-31 | 2022-01-18 | 四川省交通勘察设计研究院有限公司 | Shed tunnel structure suitable for turning zone and construction method thereof |
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