CN106869953A - Soft lower hard and tunneling boring hard rock balance driving method of calming the anger on earth pressure balanced shield, EPBS - Google Patents
Soft lower hard and tunneling boring hard rock balance driving method of calming the anger on earth pressure balanced shield, EPBS Download PDFInfo
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- CN106869953A CN106869953A CN201710177458.8A CN201710177458A CN106869953A CN 106869953 A CN106869953 A CN 106869953A CN 201710177458 A CN201710177458 A CN 201710177458A CN 106869953 A CN106869953 A CN 106869953A
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- 230000005641 tunneling Effects 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 59
- 239000011435 rock Substances 0.000 title claims abstract description 53
- 230000001914 calming effect Effects 0.000 title claims abstract description 26
- 238000010276 construction Methods 0.000 claims abstract description 126
- 239000002689 soil Substances 0.000 claims abstract description 43
- 230000006641 stabilisation Effects 0.000 claims abstract description 10
- 238000011105 stabilization Methods 0.000 claims abstract description 10
- 238000007493 shaping process Methods 0.000 claims abstract description 7
- 239000000243 solution Substances 0.000 claims description 27
- 239000006260 foam Substances 0.000 claims description 26
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 230000001174 ascending effect Effects 0.000 claims description 20
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 238000005429 filling process Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 238000007569 slipcasting Methods 0.000 claims description 4
- 101100001677 Emericella variicolor andL gene Proteins 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005266 casting Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009435 building construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- 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
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
-
- 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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/124—Helical conveying means therefor
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses soft lower hard and tunneling boring hard rock balance driving method of calming the anger on a kind of earth pressure balanced shield, EPBS, including step：First, gas-adding pipe is installed：Install to the gas-adding pipe that air is injected in native storehouse；2nd, shield driving：Shield Construction Method Used is carried out using balancing earth-pressure shielding machine；During Shield Construction Method Used, native storehouse internal pressure stabilization is kept to air is injected in native storehouse by gas-adding pipe, and by the outside casting of screw conveyor machine, the upper surface of dregs in native storehouse is always 20cm~40cm with the spacing at the top of soil outlet；3rd, shield segment assembling construction：In step 2 during Shield Construction Method Used, shield segment assembling construction is carried out according to conventional pipe sheet assembling lining construction technique, obtain the section of jurisdiction ring of assembled shaping.Reasonable in design, easy to operate and using effect of the invention is good, can effectively solve various problems present in soft lower hard and tunneling boring ground consisting of hard rock shield tunneling process, while driving speed is improved, can effectively reduce construction cost.
Description
Technical field
The invention belongs to subway shield tunnel construction technical field, more particularly, to soft lower hard and complete on a kind of earth pressure balanced shield, EPBS
Section hard rock balance driving method of calming the anger.
Background technology
Tunneling boring hard rock driving is the problem that Subway Tunnel shield tunnel construction is often run into, soft lower hard and complete on carrying out
When section hard rock earth pressure balanced shield, EPBS is tunneled, often occur that temperature in storehouse is high, tool wear fast, gush, grouting quality difference causes
Duct piece float upward the problems such as, cause interval operating expenses to increase, duration and construction quality can not be effectively ensured.With China
Large-scale subway construction is carried out, the upper-soft lower-hard ground and complete in each regional subway construction field interval shield construction
Section ground consisting of hard rock driving is more and more, how to solve to be dug during soft lower hard and tunneling boring ground consisting of hard rock on earth pressure balanced shield, EPBS
Temperature is high in warehouse entry, tool wear is fast, gush, reduce construction cost the problems such as synchronous grouting is of poor quality, it is ensured that the duration and apply
Working medium amount turns into the emphasis of domestic each unit in charge of construction's technology control.Current most domestic unit in charge of construction is in upper-soft lower-hard ground
Middle driving is constructed using earth pressure balance method, and is applied without pressure driving or low soil pressure driving using hole capital after selling all securities in tunneling boring ground consisting of hard rock
Work, often occurs that temperature in storehouse is high, tool wear fast, gushs, the problems such as synchronous grouting is of poor quality in tunneling process.Especially it is being located at
When the tunnel segmental length of upper soft lower hard and tunneling boring ground consisting of hard rock is long, construction problem is more prominent.Such as to Guangzhou Underground 13
When one Shield of number line is constructed, upper soft lower hard and tunneling boring ground consisting of hard rock construction length is 2912.35 meters,
The 84% of tunnel overall length is accounted for, in order to improve the earth pressure balance driving speed of upper soft lower hard and tunneling boring ground consisting of hard rock, it is ensured that construction
While duration, construction cost is reduced, it is necessary to which existing earth pressure balanced shield, EPBS driving method is adjusted.
The content of the invention
The technical problems to be solved by the invention are for above-mentioned deficiency of the prior art, there is provided a kind of earth pressure balance
Soft lower hard and tunneling boring hard rock balance driving method of calming the anger in shield, its reasonable in design, easy to operate and using effect is good, energy
Various problems present in soft lower hard and tunneling boring ground consisting of hard rock shield tunneling process are effectively solved, driving speed is being improved
Meanwhile, can effectively reduce construction cost.
In order to solve the above technical problems, the technical solution adopted by the present invention is：On a kind of earth pressure balanced shield, EPBS it is soft lower hard and
Tunneling boring hard rock balance driving method of calming the anger, it is characterised in that the method is comprised the following steps：
Step one, gas-adding pipe are installed：In the shield machine shield body of balancing earth-pressure shielding machine, install and inject air in native storehouse
Gas-adding pipe；
Step 2, shield driving：Institute's construction tunnel is entered from the front to the back using balancing earth-pressure shielding machine described in step one
Row Shield Construction Method Used, institute's construction tunnel is the subway tunnel for hard rock positioned at upper-soft lower-hard ground or full section of tunnel；
Institute's construction tunnel is carried out during Shield Construction Method Used, by gas-adding pipe to air is injected in native storehouse, keep soil
Storehouse internal pressure stabilization；Meanwhile, the dregs in native storehouse is continuously discharged by screw conveyor machine, make the upper of dregs in native storehouse
Surface is all the time than soil outlet top d, wherein d=20cm~40cm high；
The soil outlet is the installing port for installing the screw conveyor machine opened up on native storehouse rear wall；
Step 3, shield segment assembling construction：In step 2 during Shield Construction Method Used, served as a contrast according to conventional pipe sheet assembling
Building construction technology carries out shield segment assembling construction, obtains the section of jurisdiction ring of assembled shaping.
Soft lower hard and tunneling boring hard rock balance driving method of calming the anger on above-mentioned earth pressure balanced shield, EPBS, it is characterized in that：Step
D=40cm described in two.
Soft lower hard and tunneling boring hard rock balance driving method of calming the anger on above-mentioned earth pressure balanced shield, EPBS, it is characterized in that：Step
Gas-adding pipe described in one is the foam solution ascending pipe carried in balancing earth-pressure shielding machine.
Soft lower hard and tunneling boring hard rock balance driving method of calming the anger on above-mentioned earth pressure balanced shield, EPBS, it is characterized in that：It is described
The quantity of the foam solution ascending pipe carried in balancing earth-pressure shielding machine is many；When gas-adding pipe installation is carried out in step one, by soil
The foam solution ascending pipe carried in pressure balance shield machine is used to inject the foam solution, by balancing earth-pressure shielding machine
The remaining foam solution ascending pipe for carrying is connected with gas injection equipment and is used as gas-adding pipe.
Soft lower hard and tunneling boring hard rock balance driving method of calming the anger on above-mentioned earth pressure balanced shield, EPBS, it is characterized in that：Step
Institute's construction tunnel is a tunnel construction sections of subway tunnel to be onstructed in two, and institute's construction tunnel is located at the subway tunnel to be onstructed
Middle part or front side；
Before carrying out Shield Construction Method Used to institute's construction tunnel in step 2, native storehouse gas injection displacement filling, process are first carried out
It is as follows：By gas-adding pipe to injecting air in native storehouse, and the dregs in native storehouse is gradually discharged by the screw conveyor machine, directly
The upper surface of dregs and the spacing at the top of soil outlet are d in native storehouse；
In native storehouse gas injection displacement filling process, monitor in real time is carried out to native storehouse internal pressure, and keep native storehouse internal pressure
Stabilization.
Soft lower hard and tunneling boring hard rock balance driving method of calming the anger on above-mentioned earth pressure balanced shield, EPBS, it is characterized in that：Tu Cang
In gas injection displacement filling process, the balancing earth-pressure shielding machine is in and stops driving state, the knife of the balancing earth-pressure shielding machine
Disk and screw conveyor machine are in working condition.
Soft lower hard and tunneling boring hard rock balance driving method of calming the anger on above-mentioned earth pressure balanced shield, EPBS, it is characterized in that：Step
Before carrying out Shield Construction Method Used to institute's construction tunnel in two, one is installed on the rear wall of Tu Cang is used to judge slag in native storehouse
The valve of the upper level of soil, the valve is d with the spacing at the top of soil outlet.
Soft lower hard and tunneling boring hard rock balance driving method of calming the anger on above-mentioned earth pressure balanced shield, EPBS, it is characterized in that：Step
When carrying out Shield Construction Method Used to institute's construction tunnel from the front to the back using balancing earth-pressure shielding machine in two, process is as follows：
Step 201, preliminary driving：A ring or two rings are tunneled from the front to the back using balancing earth-pressure shielding machine, in tunneling process
Synchronize monitoring to the upper level of dregs in native storehouse, and make the upper of dregs in native storehouse by controlling the screw conveyor machine
Surface is all the time than soil outlet top d high, while the cutter head torque of balancing earth-pressure shielding machine described in tunneling process is recorded,
Now the cutter head torque of the balancing earth-pressure shielding machine is denoted as T；
Step 202, follow-up driving：Continue to carry out shield pick to institute's construction tunnel from the front to the back using balancing earth-pressure shielding machine
Enter construction；During Shield Construction Method Used, the cutter head torque of the balancing earth-pressure shielding machine is controlled to be always T.
Soft lower hard and tunneling boring hard rock balance driving method of calming the anger on above-mentioned earth pressure balanced shield, EPBS, it is characterized in that：Step
When shield segment assembling construction is carried out in three, after Shield Construction Method Used completes a ring in step 2, according to conventional pipe sheet assembling
Lining construction technique carries out shield segment assembling construction, obtains a section of jurisdiction ring of assembled shaping.
Soft lower hard and tunneling boring hard rock balance driving method of calming the anger on above-mentioned earth pressure balanced shield, EPBS, it is characterized in that：Step
When carrying out Shield Construction Method Used to institute's construction tunnel in two, comprise the following steps：
Step 2-1, preceding N rings driving；Carry out preceding N rings tunneling construction from the front to the back using balancing earth-pressure shielding machine；Wherein, N
For positive integer andL is the length of the shield machine shield body of balancing earth-pressure shielding machine, and D is the width of section of jurisdiction ring,Represent
Round up；
After preceding N rings tunneling construction to be done, in the space between the Tunnel of the shield machine shield body and institute's construction tunnel
Filled by air with pressure；
Step 2-2, next ring driving：Carry out next ring tunneling construction from the front to the back using balancing earth-pressure shielding machine；The ring
After the completion of tunneling construction, filled by air with pressure in the space between abjection ring and the Tunnel, and use filling system pair
The abjection ring synchronizes slip casting behind, by the slurries of synchronous grouting to space between the abjection ring and the Tunnel
Interior enters line replacement by air with pressure；
The abjection ring is a section of jurisdiction ring of abjection balancing earth-pressure shielding machine shield tail when the ring tunneling construction is completed.
The present invention has advantages below compared with prior art：
1st, easy construction and method and step is simple, easy to operate, input cost is low, it is convenient to realize.
2nd, reasonable in design, using effect is good and practical value is high, can effectively solve soft lower hard and tunneling boring ground consisting of hard rock
Various problems present in shield tunneling process, for the current domestic subway work duration is tight, upper soft lower hard and tunneling boring hard rock
Driving is costly and the situation that time-consuming, for solved the upper soft lower hard and tunneling boring hard rock driving time long, inefficiency, tool changing
Frequent risk is big, costly, often occurs temperature in storehouse is high, tool wear is fast, gush, synchronous grouting is of poor quality etc. in work progress
Problem, the present invention is carried out during Shield Construction Method Used, by gas-adding pipe to air is injected in native storehouse, keeps native storehouse internal pressure
Stabilization；Meanwhile, the dregs in native storehouse is continuously discharged by screw conveyor machine, make in native storehouse the upper surface of dregs and be unearthed
Spacing at the top of mouthful is always 20cm~40cm, is so dug in upper soft lower hard and tunneling boring ground consisting of hard rock with balancing earth-pressure shielding machine
Large quantity of air is added in shield machine soil storehouse when entering, is replaced soil pressure to form pressure with the face soil body and crevice water with air pressure and is put down
Weighing apparatus, is analyzed by pressure parameter and the situation of being unearthed judges and ensures that the soil body is located at soil outlet top 20cm~40cm in native storehouse, this
Sample can effectively reduce dregs in native storehouse highly, make in native storehouse and shield body is calmed the anger body filling with ground lamellar spacing by balance, it is ensured that
The drying of environment and shield body efficiently solve soil in soft lower hard tunneling process with the drying of soil body gap internal pore in native storehouse
The soil body same cutterhead high and tool contact area are big in pressure balance bunker, fraction time is long causes temperature in storehouse is high, tool wear is fast etc.
Problem, reduces shield high temperature downtime and tool change time, reduces replacing number of cutters；Meanwhile, efficiently solve soft
Aqueous more between soil particle in earth pressure balance soil storehouse in hard tunneling process down, shield body front end is easily dead by soil particle plug in addition, shield body
Lost with ground lamellar spacing internal pressure power, cause moisture in stratum into shield body with soil body gap, gradually flow into Tu Cang and formation
Gush problem；Cause crevice water in stratum a large amount of in addition, efficiently solving tunneling boring hard rock hole capital after selling all securities no pressure and low-pressure driving
By face and shield body with ground lamellar spacing into forming the problem of gushing in storehouse；Also, solving shield body gap internal water accumulation causes to take off
Go out moisture dilution simultaneous grouting slurry after shield tail, reduce synchronous grouting quality problems；At the same time, shield is improve using the present invention
Structure efficiency of construction, it is ensured that shield tunnel quality, there is preferable social benefit and economy.
Meanwhile, the earth pressure balance driving speed of upper soft lower hard and tunneling boring ground consisting of hard rock can be effectively improved using the present invention,
While the construction period is ensured, construction cost can be effectively reduced.
In sum, reasonable in design, easy to operate and using effect of the invention is good, can effectively solve soft lower hard and complete disconnected
Various problems present in the ground consisting of hard rock shield tunneling process of face, while driving speed is improved, can effectively reduce and be constructed into
This.
Below by drawings and Examples, technical scheme is described in further detail.
Brief description of the drawings
Fig. 1 is method of the present invention FB(flow block).
Fig. 2 is the Construction State schematic diagram before gas injection displacement filling in soil storehouse of the invention.
Fig. 3 is the Construction State schematic diagram after gas injection displacement filling in soil storehouse of the invention.
Fig. 4 is the schematic view of the mounting position of valve of the present invention.
Fig. 5 is the structural representation after the completion of the synchronous grouting of present invention abjection ring behind.
Description of reference numerals:
1-balancing earth-pressure shielding machine；2-institute construction tunnel；3-Tu Cang；
4-gas-adding pipe；5-soil outlet；6-foam solution ascending pipe；
7-dregs；8-section of jurisdiction ring；9-air with pressure；
10-ball valve；11-synchronous grouting layer.
Specific embodiment
Soft lower hard and tunneling boring hard rock balance driving method of calming the anger, bag on a kind of earth pressure balanced shield, EPBS as shown in Figure 1
Include following steps：
Step one, gas-adding pipe are installed：In the shield machine shield body of balancing earth-pressure shielding machine 1, install empty to being injected in native storehouse 3
The gas-adding pipe 4 of gas, refers to Fig. 2；
Step 2, shield driving：Using balancing earth-pressure shielding machine 1 described in step one from the front to the back to institute's construction tunnel 2
Carry out Shield Construction Method Used, it positioned at upper-soft lower-hard ground or full section of tunnel is the subway tunnel of hard rock that institute's construction tunnel 2 is；
Institute's construction tunnel 2 is carried out during Shield Construction Method Used, by gas-adding pipe 4 to air is injected in native storehouse 3, kept
The internal pressure stabilization of native storehouse 3；Meanwhile, the dregs 7 in native storehouse 3 is continuously discharged by screw conveyor machine, make in native storehouse 3
All the time than the top of soil outlet 5 d, wherein d=20cm~40cm high, Fig. 3 is referred in the upper surface of dregs 7；
The soil outlet 5 is the installing port for installing the screw conveyor machine opened up on the rear wall of native storehouse 3；
Step 3, shield segment assembling construction：In step 2 during Shield Construction Method Used, served as a contrast according to conventional pipe sheet assembling
Building construction technology carries out shield segment assembling construction, obtains the section of jurisdiction ring 8 of assembled shaping.
The upper-soft lower-hard ground includes bottom rock stratum and the upper soil horizon above the bottom rock stratum, is located at herein
The subway tunnel of upper-soft lower-hard ground refers to the top of the tunnel cross-section for soil layer and its underpart are rock stratum, and the rock stratum is
Hard formation.
Wherein, the dregs 7 is the mixture of rock slag or rock slag and native slag.
In the present embodiment, the d=40cm described in step 2.
During practice of construction, can according to specific needs, the value size to d is adjusted accordingly.
In the present embodiment, gas-adding pipe 4 described in step one is the foam solution ascending pipe 6 carried in balancing earth-pressure shielding machine 1.
Thus, practical operation is easy, and input cost is relatively low, and saving of work and time.
The quantity of the foam solution ascending pipe 6 carried in the balancing earth-pressure shielding machine 1 is many；Aerating is carried out in step one
When pipe is installed, the foam solution ascending pipe 6 carried in balancing earth-pressure shielding machine 1 is used to inject the foam solution, will
The remaining foam solution ascending pipe 6 carried in balancing earth-pressure shielding machine 1 is connected with gas injection equipment and is used as gas-adding pipe 4.Its
In, gas injection equipment is also referred to as supercharging equipment.
In the present embodiment, the quantity of the foam solution ascending pipe 6 carried in the balancing earth-pressure shielding machine 1 is four, step
The three foam solution ascending pipes 6 carried in balancing earth-pressure shielding machine 1 are connected with gas injection equipment and made as gas-adding pipe 4 in one
With.
When actually used, the front end of the every foam solution ascending pipe 6 is installed in the rear wall middle part in native storehouse 3.It is described
Screw conveyor machine is arranged on the bottom in native storehouse 3.
Thus, the present invention injects the liquid injection system of foam solution using the foaming system carried in balancing earth-pressure shielding machine 1,
The foaming system carried in balancing earth-pressure shielding machine 1 includes four road foam solution ascending pipes 6, by adjusting three road foam solution ascending pipes
6, make three road foam solution ascending pipes 6 only to adding air to be added without foam solution and water in native storehouse 3, Shield Construction Method Used with it is described
In cutterhead rotation process, the 4th road foam solution ascending pipe 6 is normally added foam solution carries out cutterhead lubrication.
In the present embodiment, institute's construction tunnel 2 is a tunnel construction sections of subway tunnel to be onstructed, institute's construction tunnel in step 2
2 middle parts or front side for being located at the subway tunnel to be onstructed；
As shown in Figures 2 and 3, before carrying out Shield Construction Method Used to institute's construction tunnel 2 in step 2, Tu Cang notes are first carried out
Gas displacement filling, process is as follows：By gas-adding pipe 4 to injecting air in native storehouse 3, and by the screw conveyor machine by native storehouse 3
Interior dregs 7 is gradually discharged, until the upper surface of dregs 7 is than the top of soil outlet 5 d high in native storehouse 3；
In native storehouse gas injection displacement filling process, monitor in real time is carried out to the internal pressure of native storehouse 3, and keep the inside of native storehouse 3 pressure
Power stabilization.
Wherein, the purpose for keeping native storehouse 3 internal pressure stabilization is air pressure in native storehouse 3 is formed with moisture in stratum and stratum
Balance pressure, enables the internal pressure of native storehouse 3 to consolidate the rock mass on the outside of support shield machine shield body.
In native storehouse gas injection displacement filling process, the balancing earth-pressure shielding machine 1 is in and stops driving state, and the soil pressure is put down
The cutterhead and screw conveyor machine of weighing apparatus shield machine 1 are in working condition.
When actually carrying out native storehouse gas injection displacement filling, when large quantity of air injects native storehouse 3, start rotating cutter-head, and start
The screw conveyor machine is outwards unearthed, and balancing earth-pressure shielding machine 1 is not tunneled forward, and the dregs 7 in native storehouse 3 is replaced using air,
And keep storehouse to press stabilization.
In the present embodiment, when carrying out native storehouse gas injection displacement filling, by gas-adding pipe 4 to injecting air in native storehouse 3, and pass through
The screw conveyor machine gradually discharges the dregs 7 in native storehouse 3, until the top of soil outlet 5 is down in the upper surface of dregs 7 in native storehouse 3
At the 40cm of top.
As shown in figure 4, before carrying out Shield Construction Method Used to institute's construction tunnel 2 in step 2, on the rear wall in native storehouse 3
One valve for being used to judge the upper level of dregs 7 in native storehouse 3 is installed, the valve is with the spacing at the top of soil outlet 5
d。
In the present embodiment, the valve is ball valve 10.
During actual installation, the valve is arranged on the rear wall outside in native storehouse 3.
In the present embodiment, the ball valve 10 is arranged on the top of soil outlet 5 and is higher by the position of 40cm.Shield is carried out in step 2
During structure tunneling construction, when soil outlet 5 begins with air ejection, dregs in soil storehouse 3 easy, quick can be determined by ball valve 10
Whether 7 upper level is higher by the installation site of ball valve 10, when the upper level of dregs 7 in native storehouse 3 is higher by ball valve 10
During installation site, stop driving；Otherwise, when the upper level of dregs 7 in native storehouse 3 is not higher by the installation site of ball valve 10,
Recover driving.
In the present embodiment, shield pick is carried out to institute's construction tunnel 2 using balancing earth-pressure shielding machine 1 from the front to the back in step 2
When entering to construct, process is as follows：
Step 201, preliminary driving：One ring or two rings are tunneled using balancing earth-pressure shielding machine 1 from the front to the back, in tunneling process
Upper level to dregs 7 in native storehouse 3 synchronizes monitoring, and makes dregs 7 in native storehouse 3 by controlling the screw conveyor machine
Upper surface all the time than the top of soil outlet 5 d high, while entering to the cutter head torque of balancing earth-pressure shielding machine 1 described in tunneling process
Row record, now the cutter head torque of the balancing earth-pressure shielding machine 1 is denoted as T；
Step 202, follow-up driving：Continue to carry out shield to institute's construction tunnel 2 from the front to the back using balancing earth-pressure shielding machine 1
Tunneling construction；During Shield Construction Method Used, the cutter head torque of the balancing earth-pressure shielding machine 1 is controlled to be always T.
In the present embodiment, in step 201 in preliminary tunneling process, by the boring parameter for adjusting balancing earth-pressure shielding machine 1
Cutter head torque is referred mainly to, ball valve 10 is iterated through and is determined whether the upper surface of dregs 7 in native storehouse 3 is higher by the installation position of ball valve 10
Put, at the same time, the boring parameter for recording balancing earth-pressure shielding machine 1 refers mainly to cutter head torque；And utilize the earth pressure balanced shield, EPBS
The boring parameter of machine 1 refers mainly to cutter head torque and proceeds driving.
In the present embodiment, also need in the cutter head torque in balancing earth-pressure shielding machine 1 not progradation and progradation
Cutter head torque T is recorded respectively.
In step 202 in follow-up tunneling process, only the cutter head torque of the balancing earth-pressure shielding machine 1 need to be controlled to be always T,
Just the upper surface of dregs 7 and the spacing at the top of soil outlet 5 in native storehouse 3 can be made to be d.
When shield segment assembling construction is carried out in the present embodiment, in step 3, Shield Construction Method Used completes one in step 2
After ring, shield segment assembling construction is carried out according to conventional pipe sheet assembling lining construction technique, obtain an institute of assembled shaping
State section of jurisdiction ring 8.
As shown in figure 5, when carrying out Shield Construction Method Used to institute's construction tunnel 2 in step 2, comprising the following steps：
Step 2-1, preceding N rings driving；Carry out preceding N rings tunneling construction from the front to the back using balancing earth-pressure shielding machine 1；Wherein, N
For positive integer andL is the length of the shield machine shield body of balancing earth-pressure shielding machine 1, and D is the width of section of jurisdiction ring 8,Table
Show and round up；
After preceding N rings tunneling construction to be done, in the space between the Tunnel of the shield machine shield body and institute's construction tunnel 2
Filled by air with pressure 9, play air pressure sealing effect；
Step 2-2, next ring driving：Carry out next ring tunneling construction from the front to the back using balancing earth-pressure shielding machine 1；The ring
After the completion of tunneling construction, filled by air with pressure 9 in the space between abjection ring and the Tunnel, and use filling system pair
The abjection ring synchronizes slip casting behind, by the slurries of synchronous grouting to space between the abjection ring and the Tunnel
Interior enters line replacement by air with pressure 9, simultaneous grouting slurry is diluted without underground water so, it is ensured that simultaneous grouting slurry matter
Amount；
The abjection ring is a section of jurisdiction ring of the abjection shield tail of balancing earth-pressure shielding machine 1 when the ring tunneling construction is completed
8。
In the present embodiment, using filling system to it is described abjection ring synchronize slip casting behind after, it is described abjection ring and
Synchronous grouting layer 11 is formed between the Tunnel.
The above, is only presently preferred embodiments of the present invention, and not the present invention is imposed any restrictions, every according to the present invention
Any simple modification, change and equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (10)
1. a kind of soft lower hard and tunneling boring hard rock balance driving method of calming the anger on earth pressure balanced shield, EPBS, it is characterised in that the party
Method is comprised the following steps：
Step one, gas-adding pipe are installed：In the shield machine shield body of balancing earth-pressure shielding machine (1), install empty to injection in Tu Cang (3)
The gas-adding pipe (4) of gas；
Step 2, shield driving：Using balancing earth-pressure shielding machine described in step one (1) from the front to the back to institute's construction tunnel (2)
Carry out Shield Construction Method Used, it positioned at upper-soft lower-hard ground or full section of tunnel is the subway tunnel of hard rock that institute's construction tunnel (2) is；
Institute's construction tunnel (2) is carried out during Shield Construction Method Used, by injection air in gas-adding pipe (4) Xiang Tucang (3), protected
Hold Tu Cang (3) internal pressure stabilization；Meanwhile, the dregs (7) in Tu Cang (3) is continuously discharged by screw conveyor machine, make
The upper surface of Tu Cang (3) interior dregs (7) is all the time than soil outlet (5) top d, wherein d=20cm~40cm high；
The soil outlet (5) is the installing port for installing the screw conveyor machine opened up on Tu Cang (3) rear wall；
Step 3, shield segment assembling construction：In step 2 during Shield Construction Method Used, applied according to conventional pipe sheet assembling lining cutting
Work technique carries out shield segment assembling construction, obtains the section of jurisdiction ring (8) of assembled shaping.
2. according to soft lower hard and tunneling boring hard rock balance driving method of calming the anger on the earth pressure balanced shield, EPBS described in claim 1,
It is characterized in that：D=40cm described in step 2.
3. according to soft lower hard and tunneling boring hard rock balance driving side of calming the anger on the earth pressure balanced shield, EPBS described in claim 1 or 2
Method, it is characterised in that：Gas-adding pipe described in step one (4) is the foam solution ascending pipe carried in balancing earth-pressure shielding machine (1)
(6)。
4. according to soft lower hard and tunneling boring hard rock balance driving method of calming the anger on the earth pressure balanced shield, EPBS described in claim 3,
It is characterized in that：The quantity of the foam solution ascending pipe (6) carried in the balancing earth-pressure shielding machine (1) is many；In step
When carrying out gas-adding pipe and installing, the foam solution ascending pipe (6) that will be carried in balancing earth-pressure shielding machine (1) is for injecting
State foam solution, the remaining foam solution ascending pipe (6) carried in balancing earth-pressure shielding machine (1) be connected with gas injection equipment simultaneously as
Gas-adding pipe (4) is used.
5. according to soft lower hard and tunneling boring hard rock balance driving side of calming the anger on the earth pressure balanced shield, EPBS described in claim 1 or 2
Method, it is characterised in that：Institute's construction tunnel (2) is a tunnel construction sections of subway tunnel to be onstructed, institute's construction tunnel (2) in step 2
Positioned at the middle part or front side of the subway tunnel to be onstructed；
Before carrying out Shield Construction Method Used to institute's construction tunnel (2) in step 2, native storehouse gas injection displacement filling is first carried out, process is such as
Under：By injection air in gas-adding pipe (4) Xiang Tucang (3), and by the screw conveyor machine by the dregs (7) in Tu Cang (3)
Gradually discharge, until the upper surface of Tu Cang (3) interior dregs (7) is than soil outlet (5) top d high；
In native storehouse gas injection displacement filling process, monitor in real time is carried out to Tu Cang (3) internal pressure, and keep pressure inside Tu Cang (3)
Power stabilization.
6. according to soft lower hard and tunneling boring hard rock balance driving method of calming the anger on the earth pressure balanced shield, EPBS described in claim 5,
It is characterized in that：In native storehouse gas injection displacement filling process, the balancing earth-pressure shielding machine (1) is described in driving state is stopped
The cutterhead and screw conveyor machine of balancing earth-pressure shielding machine (1) are in working condition.
7. according to soft lower hard and tunneling boring hard rock balance driving side of calming the anger on the earth pressure balanced shield, EPBS described in claim 1 or 2
Method, it is characterised in that：Before carrying out Shield Construction Method Used to institute's construction tunnel (2) in step 2, on the rear wall of Tu Cang (3)
The valve of one upper level for judging Tu Cang (3) interior dregs (7) is installed, at the top of the valve and soil outlet (5)
Spacing is d.
8. according to soft lower hard and tunneling boring hard rock balance driving side of calming the anger on the earth pressure balanced shield, EPBS described in claim 1 or 2
Method, it is characterised in that：Shield pick is carried out to institute's construction tunnel (2) using balancing earth-pressure shielding machine (1) from the front to the back in step 2
When entering to construct, process is as follows：
Step 201, preliminary driving：One ring or two rings are tunneled using balancing earth-pressure shielding machine (1) from the front to the back, it is right in tunneling process
The upper level of Tu Cang (3) interior dregs (7) synchronizes monitoring, and is made in Tu Cang (3) by controlling the screw conveyor machine
The upper surface of dregs (7) all the time than soil outlet (5) top d high, while to balancing earth-pressure shielding machine described in tunneling process (1)
Cutter head torque is recorded, and now the cutter head torque of the balancing earth-pressure shielding machine (1) is denoted as T；
Step 202, follow-up driving：Continue to carry out shield to institute's construction tunnel (2) from the front to the back using balancing earth-pressure shielding machine (1)
Tunneling construction；During Shield Construction Method Used, the cutter head torque of the balancing earth-pressure shielding machine (1) is controlled to be always T.
9. according to soft lower hard and tunneling boring hard rock balance driving side of calming the anger on the earth pressure balanced shield, EPBS described in claim 1 or 2
Method, it is characterised in that：When shield segment assembling construction is carried out in step 3, after Shield Construction Method Used completes a ring in step 2,
Shield segment assembling construction is carried out according to conventional pipe sheet assembling lining construction technique, a section of jurisdiction of assembled shaping is obtained
Ring (8).
10. soft lower hard and tunneling boring hard rock balance driving method of calming the anger on the earth pressure balanced shield, EPBS stated according to claim 9, it is special
Levy and be：When carrying out Shield Construction Method Used to institute's construction tunnel (2) in step 2, comprise the following steps：
Step 2-1, preceding N rings driving；Preceding N rings tunneling construction is carried out using balancing earth-pressure shielding machine (1) from the front to the back；Wherein, N is
Positive integer andL is the length of the shield machine shield body of balancing earth-pressure shielding machine (1), and D is the width of section of jurisdiction ring (8),
Expression rounds up；
After preceding N rings tunneling construction to be done, quilt in the space between the Tunnel of the shield machine shield body and institute's construction tunnel (2)
Air with pressure (9) is filled；
Step 2-2, next ring driving：Next ring tunneling construction is carried out using balancing earth-pressure shielding machine (1) from the front to the back；The ring is dug
Enter after the completion of construction, by air with pressure (9) filling in the space between abjection ring and the Tunnel, and use filling system pair
The abjection ring synchronizes slip casting behind, by the slurries of synchronous grouting to space between the abjection ring and the Tunnel
Interior enters line replacement by air with pressure (9)；
The abjection ring is the section of jurisdiction ring of abjection balancing earth-pressure shielding machine (1) shield tail when the ring tunneling construction is completed
(8)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710177458.8A CN106869953A (en) | 2017-03-23 | 2017-03-23 | Soft lower hard and tunneling boring hard rock balance driving method of calming the anger on earth pressure balanced shield, EPBS |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710177458.8A CN106869953A (en) | 2017-03-23 | 2017-03-23 | Soft lower hard and tunneling boring hard rock balance driving method of calming the anger on earth pressure balanced shield, EPBS |
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| CN108756918A (en) * | 2018-07-19 | 2018-11-06 | 中国铁建重工集团有限公司 | A kind of no pipe sheet assembling device and shield machine |
| CN112901186A (en) * | 2021-02-23 | 2021-06-04 | 中铁十九局集团轨道交通工程有限公司 | Tunneling equipment and tunneling mode conversion method |
| CN113202486A (en) * | 2021-04-29 | 2021-08-03 | 中铁十二局集团有限公司 | Auxiliary pressure maintaining propulsion method for water-rich rock stratum SAMSON system |
| CN114837680A (en) * | 2022-05-10 | 2022-08-02 | 济南城建集团有限公司 | Filling type starting method of earth pressure balance shield machine |
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| CN108425681A (en) * | 2017-10-27 | 2018-08-21 | 宏润建设集团股份有限公司 | A kind of gas soil joint balance shield machine and its face balance control method |
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| CN113202486A (en) * | 2021-04-29 | 2021-08-03 | 中铁十二局集团有限公司 | Auxiliary pressure maintaining propulsion method for water-rich rock stratum SAMSON system |
| CN114837680A (en) * | 2022-05-10 | 2022-08-02 | 济南城建集团有限公司 | Filling type starting method of earth pressure balance shield machine |
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Application publication date: 20170620 |