CN103352703A - Mud draining construction method of thick muddy water of shield tunneling machine - Google Patents
Mud draining construction method of thick muddy water of shield tunneling machine Download PDFInfo
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- CN103352703A CN103352703A CN2013102850792A CN201310285079A CN103352703A CN 103352703 A CN103352703 A CN 103352703A CN 2013102850792 A CN2013102850792 A CN 2013102850792A CN 201310285079 A CN201310285079 A CN 201310285079A CN 103352703 A CN103352703 A CN 103352703A
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- muddy water
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- shield tunneling
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Abstract
The invention relates to a mud draining construction method of thick muddy water of a shield tunneling machine. According to the mud draining construction method of the thick muddy water of the shield tunneling machine, powder clay and thickening agent are added into a mud generator of the shield tunneling machine to prepare the thick muddy water; the prepared thick muddy water is conveyed to the end face of a cutterhead of the shield tunneling machine from a mud conveying pipeline to be sprayed out; the shield tunneling machine starts to carry forward cutting, and soil sand generated in the tunneling process and the sprayed thick muddy water are stirred to flow in a mixed mode in a stirring area of the shield tunneling machine; the mixed liquor after being stirred enters a mud draining groove of the shield tunneling machine and drains out in an interrupted mode while an excavating face is stable. According to the mud draining construction method of the thick muddy water of the shield tunneling machine, the excavating face and an overexcavation part are pressurized and filled through high-concentration muddy water, and therefore long-distance propelling, sharp-curve propelling and rock layer propelling are facilitated; not only are workloads small and is safety high, but also bad effects on the ground surface such as ground surface depression will not occur easily, constructing accuracy is well improved, and cost is reduced.
Description
Technical field
The present invention relates to a kind of method for tunnel construction, especially a kind of dense muddy water formula spoil disposal engineering method of shield machine.
Background technology
At present, the earth pressure balanced shield, EPBS construction is adopted in the most of city tunnel construction of China, this method comparatively be suitable for take fine grained as main, water permeability is less and disturbance after be easy to form the stratum of Plastic Flow state, comparing cost with Slurry Shield also can cheap about 30%.But when the interval most of paragraph of shield structure is fine grained soil layer and local when having the larger coarse sand of permeability and sand and gravel stratum, the paragraph of the large water permeability of earth pressure balanced shield, EPBS can not well keep the stable of excavation face, is easy to cause the excavation face unstability to cave in and the accident such as surface subsidence.If adopt Slurry Shield between the whole district because local segment drops out now large water permeability stratum, then can cause construction costs significantly to rise.
Summary of the invention
The technical problem to be solved in the present invention is: the dense muddy water formula spoil disposal engineering method that proposes a kind of low cost, shield machine that construction quality is stable.
The technical solution adopted in the present invention is: a kind of dense muddy water formula spoil disposal engineering method of shield machine may further comprise the steps:
1) in the mud generator of shield machine, adds powder clay and tackifier to modulate dense muddy water;
2) from mud conveying pipeline, the above-mentioned dense muddy water that modulates is delivered to the end face ejection of cutter head of shield machine;
3) shield machine begins to advance cutting, and the native sand that produces in the digging process and the dense muddy water of ejection mix mobile in the stirring area of shield machine;
4) mixed liquor after the stirring enters the mud drainage slot of shield machine, intermittently discharges when excavation surface is stable.
Specifically, for the stability that the concentration that increases muddy water is constructed with increase, the dense muddy water in the step 1) of the present invention is take the powder clay as solute, and tackifier are solvent modulation gained, and the proportion of dense muddy water is 1.3～1.5.
The sludge discharge way of step 4) of the present invention is the vacuum transport mode.Can grow distance and carry, frequent forced ventilation in the pipe, safety, cleaning.
For rock can be entered after fragmentation in the pipe, carry rubble by pipeline, reduce workload little, increase safely, the cutter plate driver section of shield machine of the present invention is equipped with cone crusher.
Shield machine of the present invention is equipped with high moment of torsion cutterhead, can excavate rock-soil layer; Simultaneously can be in machine the tool changing head, can advance the long distance of rock-soil layer; And owing to the propelling of long distance, can effectively reduce the quantity of vertical shaft.
The present invention transports outside the hole by vacuum pressure large native sand that can conveyance under the atmospheric pressure effect, in addition, can not transport by bucket in the hole by the large gravel of vacuum attraction; And transport to the outer native sand in hole, and directly transport processing at storage mud groove by the vacuum tube car, or by using also flow pattern earth separator, common soil and mud-water separation are processed, reduce cost.
The present invention can apply in the daily tunnel construction, comprises shield-tunneling construction, shield structure and propelling construction or propelling construction.
The invention has the beneficial effects as follows: by high concentration muddy water excavation surface and the section's of backbreaking pressurization are full of, are conducive to do long distance propelling, the propelling of anxious curve and lithosphere and advance; Not only workload is little, and is safe; And the impact bad on the earth's surface such as surface subsidence be difficult for to occur, well improved construction precision, cost reduction.
The specific embodiment
The present invention is further detailed explanation in conjunction with the embodiments now.
A kind of dense muddy water formula spoil disposal engineering method of shield machine may further comprise the steps:
1) in the mud generator of shield machine, adds powder clay and tackifier to modulate dense muddy water;
2) from mud conveying pipeline, the above-mentioned dense muddy water that modulates is delivered to the end face ejection of cutter head of shield machine;
3) shield machine begins to advance cutting, and the native sand that produces in the digging process and the dense muddy water of ejection mix mobile in the stirring area of shield machine;
4) mixed liquor after the stirring enters the mud drainage slot of shield machine, intermittently discharges when excavation surface is stable.
5) under the atmospheric pressure effect, large native sand that can conveyance is transported outside the hole by vacuum pressure, in addition, can not in the hole, transport by bucket by the large gravel of vacuum attraction.
6) transport to the outer native sand in hole, directly transport processing at storage mud groove by the vacuum tube car, or by using also flow pattern earth separator, common soil and mud-water separation are processed, reduce cost.
7) stop the jacking of nurse pipe, approximately can cause 1000 meters;
8) shield-tunneling construction, pipe sheet assembling.
9) continue construction.
Specifically, for the stability that the concentration that increases muddy water is constructed with increase, the dense muddy water in the step 1) of the present invention is take the powder clay as solute, and tackifier are solvent modulation gained, and the proportion of dense muddy water is 1.4.
Lithotripsy apparatus is installed by cutter plate driver of the present invention section, i.e. cone crusher, and rock can enter after fragmentation in the pipe, carries rubble by pipeline, and workload is little, and is safe.Excavation surface and the section's high concentration muddy water pressurization of backbreaking are full of, and stability is high, can advance under utmost point low-thrust, therefore, can grow distance and advance; And be difficult for occuring the impacts bad on the earth's surface such as surface subsidence.
Development machine length of the present invention is short, and the stroke of revising jack is long, and angle correction is large, therefore, can anxious curve, the vertical curve propelling.And high moment of torsion cutterhead is installed, can excavate rock-soil layer.
The present invention has also adopted special mud pipe shape, has reduced the obstruction of mud pipe.Adopt simultaneously level detection device, improved construction precision.
Adopt the vacuum handling mode for spoil disposal, can grow distance and carry, the interior often forced ventilation of pipe, safety, cleaning.
Use circulation pattern earth piece-rate system, high concentration muddy water is recycling, cost reduction.And can be in machine the tool changing head, the long distance of rock-soil layer is advanced.Long distance advances, and vertical shaft reduces, and is very economical.
Just the specific embodiment of the present invention of describing in the above manual, various not illustrating is construed as limiting flesh and blood of the present invention, the person of an ordinary skill in the technical field after having read manual can to before the described specific embodiment make an amendment or be out of shape, and do not deviate from essence of an invention and scope.
Claims (4)
1. the dense muddy water formula spoil disposal engineering method of a shield machine is characterized in that may further comprise the steps:
1) in the mud generator of shield machine, adds powder clay and tackifier to modulate dense muddy water;
2) from mud conveying pipeline, the above-mentioned dense muddy water that modulates is delivered to the end face ejection of cutter head of shield machine;
3) shield machine begins to advance cutting, and the native sand that produces in the digging process and the dense muddy water of ejection mix mobile in the stirring area of shield machine;
4) mixed liquor after the stirring enters the mud drainage slot of shield machine, intermittently discharges when excavation surface is stable.
2. the dense muddy water formula spoil disposal engineering method of a kind of shield machine as claimed in claim 1 is characterized in that: the dense muddy water in the described step 1) is take the powder clay as solute, and tackifier are solvent modulation gained, and the proportion of dense muddy water is 1.3～1.5.
3. the dense muddy water formula spoil disposal engineering method of a kind of shield machine as claimed in claim 1, it is characterized in that: the sludge discharge way of described step 4) is the vacuum transport mode.
4. the dense muddy water formula spoil disposal engineering method of a kind of shield machine as claimed in claim 1, it is characterized in that: the cutter plate driver section of described shield machine is equipped with cone crusher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102850792A CN103352703A (en) | 2013-07-08 | 2013-07-08 | Mud draining construction method of thick muddy water of shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102850792A CN103352703A (en) | 2013-07-08 | 2013-07-08 | Mud draining construction method of thick muddy water of shield tunneling machine |
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| Publication Number | Publication Date |
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| CN103352703A true CN103352703A (en) | 2013-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013102850792A Pending CN103352703A (en) | 2013-07-08 | 2013-07-08 | Mud draining construction method of thick muddy water of shield tunneling machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179507A (en) * | 2014-08-04 | 2014-12-03 | 江苏锐成机械有限公司 | Vacuum sludge discharge shield system |
| CN104695970A (en) * | 2014-08-04 | 2015-06-10 | 江苏锐成机械有限公司 | Mud concentration type shield tunneling construction method for shield tunneling machine |
| CN105134228A (en) * | 2015-08-31 | 2015-12-09 | 江苏锐成机械有限公司 | Improved thick mud type tunneling construction method for shield tunneling machine |
| CN111119914A (en) * | 2019-12-09 | 2020-05-08 | 中交天和机械设备制造有限公司 | Working mode conversion method of shield machine with adjustable density |
Citations (4)
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| CN102230384A (en) * | 2011-07-01 | 2011-11-02 | 河海大学 | Earth pressure balance/ muddy water pressurization continuously-switching shield construction method |
| CN102278119A (en) * | 2011-07-01 | 2011-12-14 | 河海大学 | Construction method for muddy water pressurization shield of grid knife flywheel and construction equipment thereof |
| JP2012154107A (en) * | 2011-01-26 | 2012-08-16 | Ohbayashi Corp | Mud pressure shield method and mud pressure shield system |
| CN202970722U (en) * | 2012-11-14 | 2013-06-05 | 广东华隧建设股份有限公司 | Double-mode shield tunneling machine |
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2013
- 2013-07-08 CN CN2013102850792A patent/CN103352703A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2012154107A (en) * | 2011-01-26 | 2012-08-16 | Ohbayashi Corp | Mud pressure shield method and mud pressure shield system |
| CN102230384A (en) * | 2011-07-01 | 2011-11-02 | 河海大学 | Earth pressure balance/ muddy water pressurization continuously-switching shield construction method |
| CN102278119A (en) * | 2011-07-01 | 2011-12-14 | 河海大学 | Construction method for muddy water pressurization shield of grid knife flywheel and construction equipment thereof |
| CN202970722U (en) * | 2012-11-14 | 2013-06-05 | 广东华隧建设股份有限公司 | Double-mode shield tunneling machine |
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| 袁大军等: "北京地下直径线泥水盾构泥浆特性参数确定", 《建筑技术》 * |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179507A (en) * | 2014-08-04 | 2014-12-03 | 江苏锐成机械有限公司 | Vacuum sludge discharge shield system |
| CN104695970A (en) * | 2014-08-04 | 2015-06-10 | 江苏锐成机械有限公司 | Mud concentration type shield tunneling construction method for shield tunneling machine |
| CN105134228A (en) * | 2015-08-31 | 2015-12-09 | 江苏锐成机械有限公司 | Improved thick mud type tunneling construction method for shield tunneling machine |
| CN105134228B (en) * | 2015-08-31 | 2018-09-11 | 江苏锐成机械有限公司 | A kind of dense mud formula driving engineering method of the modified form of shield machine |
| CN111119914A (en) * | 2019-12-09 | 2020-05-08 | 中交天和机械设备制造有限公司 | Working mode conversion method of shield machine with adjustable density |
| CN111119914B (en) * | 2019-12-09 | 2022-02-18 | 中交天和机械设备制造有限公司 | Working mode conversion method of shield machine with adjustable density |
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Application publication date: 20131016 |