CN205422728U - Bentonite improvement soil body shield structure machine device of getting rid of poverty - Google Patents
Bentonite improvement soil body shield structure machine device of getting rid of poverty Download PDFInfo
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- CN205422728U CN205422728U CN201620247807.XU CN201620247807U CN205422728U CN 205422728 U CN205422728 U CN 205422728U CN 201620247807 U CN201620247807 U CN 201620247807U CN 205422728 U CN205422728 U CN 205422728U
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Abstract
The utility model belongs to the technical field of the shield tunnel construction, especially relate to a bentonite improvement soil body shield structure machine device of getting rid of poverty, spouting the stake soon including the even number root, spouting the stake soon and for the tee pipe spouts the stake soon, become stake footpath and be 800~1000mm, spout a concrete figure soon and construct quick -witted average cutter diameter according to soil layer parameter and shield and confirm, spout a position soon and construct the machine knife at the shield and coil the place ahead 400~500mm department, spout a thick liquid soon and be especial bentonite thick liquid, its mass ratio is: the bentonite: water: CMC: soda ash = 200: 900: 1: 2, it is closely knit sand bed to spout the suitable stratum of pilework soon. The utility model particularly relates to a during the construction: the first step is spouted a hole site soon and is arranged, the second step, the configuration of bentonite thick liquid, in the third step, the bentonite thick liquid spouts into the stake soon, therefore construction steps is simple, can solve the shield structure machine problem of getting rid of poverty in the closely knit sand bed effectively fast to construction cycle is short, and the cost is low, has good economic benefits.
Description
Technical field
This utility model belongs to shield tunnel construction technology field, particularly relates to a kind of bentonite improvement soil body shield machine escaping apparatus, is particularly suited for shield machine constructing tunnel in dense sand stratum.
Background technology
The beginning of this century, shield tunnel construction has obtained large-scale application in China, but owing to China's each department geological condition is complicated, usually there will be the stranded problem of shield machine during shield-tunneling construction.Especially; when shield machine tunnels in dense sand stratum; make because of long-time shutdown around cutterhead and in soil storehouse, dregs gradually dehydration deposition is fixedly arranged at around cutterhead; increase deposition in time to be gradually increased; layer of sand porosity is gradually reduced, and the binding force of cutterhead is gradually increased by stratum, causes dregs locking cutterhead; starting torque is more than nominal torque, causes cutterhead to rotate.Tradition solves to open the cabin in the stranded method of this kind of shield has hole, ground fluting i.e. digs vertical shaft etc., but these method construction periods are long, and security risk is big.Therefore, how economical, realize shield quickly and safely and get rid of poverty, be that present stage shield tunnel construction technology field is badly in need of solving the technical problem that.
Summary of the invention
Of the present utility model solving the technical problem that overcomes above-mentioned the deficiencies in the prior art exactly, and a kind of bentonite improvement soil body shield machine escaping apparatus is provided, to reduce shield cutter Restraint torsin in stranded stratum, so that stranded shield machine can recover normally to work.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is as follows:
Design a kind of bentonite improvement soil body shield machine escaping apparatus, including being positioned at cutter head of shield machine front, along the many rotary churning piles arranged about cutterhead transverse section.
Preferably, in above-mentioned bentonite improvement soil body shield machine escaping apparatus, described rotary churning pile is positioned at the 400 ~ 500mm of cutter head of shield machine front.
Preferably, in above-mentioned bentonite improvement soil body shield machine escaping apparatus, described rotary churning pile is three pipe rotary churning piles, and pile stake footpath is 600-800mm.
Preferably, in above-mentioned bentonite improvement soil body shield machine escaping apparatus, described rotary churning pile has even number root, uniform along the left and right sides, shield machine center symmetry.
Preferably, in above-mentioned bentonite improvement soil body shield machine escaping apparatus, described rotary churning pile at least four, about inner side, the horizontal range of respective sides when two rotary churning piles and shield machine center cutterhead horizontal level is respectively 200 ~ 500mm, about its outermost, the horizontal range of the edge respective sides of the outward flange of two rotary churning piles and cutter head of shield machine peripheral part is 500 ~ 800mm, and in the rotary churning pile set by the left and right sides, shield machine center, the horizontal centre of adjacent two rotary churning piles of homonymy is away from for 800 ~ 1500mm.
Preferably, in above-mentioned bentonite improvement soil body shield machine escaping apparatus, the lower end of the described rotary churning pile difference in height away from cutterhead bottommost is 500 ~ 800mm, and the upper end of the rotary churning pile difference in height away from cutterhead top is 500 ~ 800mm.
Preferably, in above-mentioned bentonite improvement soil body shield machine escaping apparatus, described rotary churning pile pile serosity is special bentonite slurry, and in every cubic metre of bentonite slurry, mass ratio is: bentonite: water: CMC: soda=200:900:1:2.
Advantageous Effects of the present utility model is:
1. this utility model is by punching in stranded cutter head of shield machine front, and then by boring under rotary jetting apparatus, injection high pressure bentonite slurry forms pile body, and then improves the stranded shield machine front soil body, reduces cutterhead starting torque, reaches the purpose making shield machine get rid of poverty.Specifically, in its formation of pile, on the one hand the bentonite slurry of churning can effectively cut and be attached on cutter head of shield machine and the sand of periphery, on the other hand the cutter head of shield machine periphery soil body can be filled with improvement, unstressed sand, increase porosity, reduce the soil body binding force to shield machine, and then make shield machine get rid of poverty.
Rotary churning pile structure the most of the present utility model, by ground no-dig technique mode, it is possible to effectively quickly solves shield machine in dense sand stratum and gets rid of poverty problem, and reduce use hole in open the cabin, ground fluting i.e. digs vertical shaft etc. and gets rid of poverty the security risk of mode.
Work progress step the most of the present utility model is simple, has preferable practicality, and short construction period, and cost is low, there is good economic benefit.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described in further detail, wherein:
Fig. 1 is the longitudinal plane structure schematic diagram of this utility model bentonite improvement soil body shield machine escaping apparatus；
Fig. 2 is the A-A sectional structure schematic diagram shown in Fig. 1；
Fig. 3 is the B-B sectional structure schematic diagram shown in Fig. 1；
Sequence number in figure: 1, rotary churning pile, 2, Kong Wei, 3, bentonite slurry, 4, shield machine, 5, shield machine center cutterhead, 6, ground.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model; technical scheme in this utility model embodiment is carried out the most complete description; the most described embodiment is only this utility model schematic part detailed description of the invention; it is not limited to scope of the present utility model; any those skilled in the art, in the equivalent variations conceived without departing from this utility model and made on the premise of principle and amendment, all should belong to the scope of this utility model protection.
With reference to shown in Fig. 1-3, in figure, this utility model one bentonite improvement soil body shield machine escaping apparatus, including being positioned at shield machine 4 cutterhead front, along the many rotary churning piles 1 arranged about cutterhead transverse section.
Specifically, in above-mentioned bentonite improvement soil body shield machine escaping apparatus, described rotary churning pile is positioned at the 400 ~ 500mm of cutter head of shield machine front.
Specifically, in above-mentioned bentonite improvement soil body shield machine escaping apparatus, described rotary churning pile is three pipe rotary churning piles, and pile stake footpath is 600 ~ 800mm.
Specifically, in above-mentioned bentonite improvement soil body shield machine escaping apparatus, described rotary churning pile has even number root, uniform along the left and right sides, shield machine center symmetry.
Specifically, in above-mentioned bentonite improvement soil body shield machine escaping apparatus, described rotary churning pile has the six roots of sensation, about inner side, two rotary churning piles are respectively 200 ~ 500mm with the horizontal range of respective sides during cutterhead 5 horizontal level of shield machine center, about outermost, the horizontal range of the edge respective sides of the outward flange of two rotary churning piles and shield machine periphery cutterhead is 500 ~ 800mm, and in rotary churning pile set by both sides, shield machine center, the horizontal centre of adjacent two rotary churning piles of homonymy is away from for 800 ~ 1500mm.
Specifically, in above-mentioned bentonite improvement soil body shield machine escaping apparatus, the lower end of the described rotary churning pile difference in height away from cutterhead bottommost is 500 ~ 800mm, and the upper end of the rotary churning pile difference in height away from cutterhead top is 500 ~ 800mm.
Specifically, in above-mentioned bentonite improvement soil body shield machine escaping apparatus, described rotary churning pile pile serosity is special bentonite slurry 3, and in every cubic metre of bentonite slurry, mass ratio is: bentonite: water: CMC: soda=200:900:1:2.
Each embodiment above-mentioned uses the mode gone forward one by one to be described, and what each embodiment stressed is the difference with other embodiments, and between each embodiment, identical similar part is cross-referenced.
The work progress of above-mentioned bentonite improvement soil body shield machine escaping apparatus, comprises the following steps that:
The first step, the layout of churning stake holes position 2:
At shield machine 4 cutterhead front 400 ~ 500mm, along position, cutterhead optimal crosssection hole, churning stake holes position 2 quantity is determined according to soil parameters and shield machine 4 cutter diameter, concrete grammar is: during cutterhead 5 horizontal level of shield machine center, both sides 200mm respectively arranges position, a hole 2, then position, a hole 2 is arranged toward both sides every 1000mm, until position, hole 2 pile outward flange and the most left or the rightest horizontal range of cutterhead are 500 ~ 800mm on limit, position, hole 2 deploys.
Second step, bentonite slurry 3 configures:
Configuration bentonite slurry 3, its configuration standard is: mass ratio in every cubic metre of bentonite slurry, bentonite: water: CMC: soda=200:900:1:2.Bentonite needs after having prepared to make serosity the most expanded, and specific practice is toward serosity in be passed through air constantly, and make it expanded more than 12 hours.
3rd step, bentonite slurry 3 churning pile:
According to the position, hole 2 arranged in advance at ground setting-out, then rig pore-forming in place, drilling depth is advisable to cutterhead bottommost 500 ~ 800mm.Creeping into and start to promote and spray the bentonite slurry 3 prepared after putting in place, lifting speed controlling, at 10 ~ 12cm/min, is promoted to, at distance cutterhead top 500 ~ 800mm, stop the injection of bentonite slurry 3, and pile completes.
Described above to disclosed embodiment, makes those skilled in the art be capable of or uses this utility model.Revising apparent to those skilled in the art to the many places of these embodiments, generic principles defined herein can realize on the premise of without departing from the spirit or scope of utility model in other embodiments.Therefore, this utility model will be not restricted to these embodiments illustrated herein, and be to fit to the widest range consistent with principles disclosed herein and features of novelty.
Claims (7)
1. a bentonite improvement soil body shield machine escaping apparatus, is characterized in that: include being positioned at cutter head of shield machine front, along the many rotary churning piles arranged about cutterhead transverse section.
Bentonite the most according to claim 1 improvement soil body shield machine escaping apparatus, is characterized in that: described rotary churning pile is positioned at the 400 ~ 500mm of cutter head of shield machine front.
Bentonite the most according to claim 1 improvement soil body shield machine escaping apparatus, is characterized in that: described rotary churning pile is three pipe rotary churning piles, pile stake footpath is 600 ~ 800mm.
Bentonite the most according to claim 1 improvement soil body shield machine escaping apparatus, is characterized in that: described rotary churning pile has even number root, uniform along the left and right sides, shield machine center symmetry.
Bentonite the most according to claim 4 improvement soil body shield machine escaping apparatus, it is characterized in that: described rotary churning pile at least four, about inner side, the horizontal range of respective sides when two rotary churning piles and shield machine center cutterhead horizontal level is respectively 200 ~ 500mm, about its outermost, the horizontal range of the edge respective sides of the outward flange of two rotary churning piles and shield machine periphery cutterhead is 500 ~ 800mm, and in the rotary churning pile set by the left and right sides, shield machine center, the horizontal centre of adjacent two rotary churning piles of homonymy is away from for 800 ~ 1500mm.
Bentonite the most according to claim 1 improvement soil body shield machine escaping apparatus, is characterized in that: the lower end of the described rotary churning pile difference in height away from cutterhead bottommost is 500 ~ 800mm, the upper end of the rotary churning pile difference in height away from cutterhead top is 500 ~ 800mm.
Bentonite the most according to claim 1 improvement soil body shield machine escaping apparatus, it is characterized in that: described rotary churning pile pile serosity is special bentonite slurry, and in every cubic metre of bentonite slurry, mass ratio is: bentonite: water: CMC: soda=200:900:1:2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620247807.XU CN205422728U (en) | 2016-03-29 | 2016-03-29 | Bentonite improvement soil body shield structure machine device of getting rid of poverty |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620247807.XU CN205422728U (en) | 2016-03-29 | 2016-03-29 | Bentonite improvement soil body shield structure machine device of getting rid of poverty |
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| CN205422728U true CN205422728U (en) | 2016-08-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697025A (en) * | 2016-03-29 | 2016-06-22 | 中铁隧道股份有限公司 | Escape device of bentonite improving shield tunneling machine and construction method thereof |
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2016
- 2016-03-29 CN CN201620247807.XU patent/CN205422728U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697025A (en) * | 2016-03-29 | 2016-06-22 | 中铁隧道股份有限公司 | Escape device of bentonite improving shield tunneling machine and construction method thereof |
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