CN107346669A - A kind of flexible shielding method for high radioactivity foundation ditch - Google Patents
A kind of flexible shielding method for high radioactivity foundation ditch Download PDFInfo
- Publication number
- CN107346669A CN107346669A CN201710595216.0A CN201710595216A CN107346669A CN 107346669 A CN107346669 A CN 107346669A CN 201710595216 A CN201710595216 A CN 201710595216A CN 107346669 A CN107346669 A CN 107346669A
- Authority
- CN
- China
- Prior art keywords
- foundation ditch
- shielding
- shield
- bag
- high radioactivity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F3/00—Shielding characterised by its physical form, e.g. granules, or shape of the material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F1/00—Shielding characterised by the composition of the materials
- G21F1/02—Selection of uniform shielding materials
Abstract
The invention discloses a kind of flexible shielding method for high radioactivity foundation ditch, including step：Step 1) makes, one screen layer to match of processing according to the size of live foundation ditch；Step 2) places screen layer in the foundation ditch for needing to shield above radial objects；Step 3) and then filling shielding material, form it into a bulk shield；Radial objects in foundation ditch are shielded.Successfully solve putting property of height place temporary shield and construct the problems such as middle personnel's exposure dosage high, time-consuming, Master Cost height, the inventive method is feasible, process, safe and efficient, simple to operate, cost-effective, the secondary waste yield of reduction.It ensure that staff's operating area radioactive radiation level reaches acceptable numerical value, so as to smoothly complete the construction operation in the region.
Description
Technical field
The present invention relates to a kind of nuclear radiation field, and in particular to a kind of flexible shielding method for high radioactivity foundation ditch.
Background technology
In the numerous nuclear facilities in China, there are a large amount of service works and need retired facility, equipment, factory building, in operation
Need personnel to enter inside facility in journey closely to operate.Part factory building radioactive dosage is higher, it is necessary to carry out make-up shielding, and
Traditional shielding mode is typically constructed in screen layer or the mobile shield of personnel's entrance using lead brick and operated.Using lead brick structure
It is higher to build screen layer cost, construct still needs close to operation with personnel in demolishing process；Using personnel in mobile shield
Operation, human users are restricted, and can not be from being shielded to active area at all.
The content of the invention
The purpose of the present invention is to be to overcome prior art deficiency, and it is an object of the present invention to provide a kind of for high radioactivity foundation ditch
Flexible shielding method, in storage high radioactivity foundation ditch region job, the high radioactivity material radioactivity of putting in foundation ditch is shielded temporarily
Cover.Solve that to construct screen layer cost using lead brick higher, construct still needs close to operation with personnel in demolishing process；Using
Personnel shield in-vivo procedures mobile, and human users are restricted, and can not be from all to active area progress shielding problem.
The present invention is achieved through the following technical solutions：
A kind of flexible shielding method for high radioactivity foundation ditch, including step：
Step 1) makes, one screen layer to match of processing according to the size of live foundation ditch；
Step 2) places screen layer in the foundation ditch for needing to shield above radial objects；
Step 3) and then filling shielding material, form it into a bulk shield；Radial objects in foundation ditch are entered
Row shielding.
Further, the screen layer uses shielding bag, by into shielding bag air-blowing form screen layer, and to shielding bag
Interior filling shielding material.
Further, the shielding bag is formed from internal layer rubber and the bonding sewing of outer layer canvas.
Further, the shielding material chooses 6-8 mesh model quartz sands, density 2.6t/m3, bulk density 1.6t/m3。
Further, in addition to step 4) constructs shield, completes after carrying out operation in the region；Utilize industrial dust collector
Shielding material is extracted, reclaimed.
Further, in addition to step 5), shielding bag is deflated, utilizes electric block to take out shielding bag, complete shield
Recovery operation.
The present invention compared with prior art, has the following advantages and advantages：
The invention discloses the flexible shielding method in high radioactivity place, and it belongs to military nuclear installation and civilian nuclear facilities moves back
Labour and Radwastes treatment technical field.Creatively propose to construct and remove flexibility the present invention be directed to high radioactivity region
Shield is used to carry out make-up shielding, successfully solve putting property of height place temporary shield construct middle personnel's exposure dosage it is high,
The problems such as time-consuming, Master Cost height, the inventive method is feasible, process, it is safe and efficient, simple to operate, cost-effective, subtract
Few secondary waste yield.It ensure that staff's operating area radioactive radiation level reaches acceptable numerical value, so as to
Smoothly complete the construction operation in the region.
Load a shielding bag in hole, the air-blowing into shielding bag, it is formed air bag in hole, then filling quartz
Sand, a bulk shield is formed it into, radwaste is shielded, the radiation level of near coal-mine surrounding is less than mesh after shielding
Scale value.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation that a kind of shielding bag for foundation ditch radioactivity flexible shielding of the invention is put；
Mark and corresponding parts title in accompanying drawing：
1- foundation ditches, 2- screen layers, 3- shielding materials, 4- inflatable bag bodies, 5- filling shielding material mouths, 6- inflation inlets, 7- are received
Hold together bracing wire, 8- foundation ditches and bag body closed loop.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment
As shown in figure 1, a kind of flexible shielding method for high radioactivity foundation ditch of the invention, including step：
Step 1) makes, one shielding bag to match of processing according to the size of live foundation ditch 1；Shielding bag selects internal layer
Rubber and the bonding sewing of outer layer canvas form.
Step 2) places shielding bag in the foundation ditch 1 for needing to shield above radial objects；Shielding material 3 chooses 6-8 mesh
Model quartz sand, density 2.6t/m3, bulk density 1.6t/m3。
Step 3) and then the filling shielding material 3 into shielding bag, form it into a bulk shield；To in foundation ditch 1
Radial objects are shielded.When near coal-mine center radioactive dosage is less than 100 μ Sv/h, reach the accumulation screen of shielding material 3
Cover thickness.
Step 4) constructs shield, completes after carrying out operation in the region；Shielding material 3 is carried out using industrial dust collector
Extract, recovery.
Step 5), shielding bag is deflated, take out shielding bag using electric block, complete shield recovery operation.
Shielding bag in embodiment includes inflatable bag body 4, and inflatable bag body 4 is used to contain shielding material 3, and inflatable bag body 4 is
Square body hollow structure, inflatable bag body 4 are formed using hose lining and the bonding sewing of outer cortex canvas, and top surface is set on inflatable bag body 4
There is filling shielding material mouth 5, shielding material 3 is contained into inflatable bag body 4 by loading shielding material mouth 5.Load shielding material
5 sides of mouth are connected with inflation inlet 6, are inflated by inflation inlet 6 to inflatable bag body 4.The inflatable bag body left side, the right side and bottom surface are provided with
More gathering bracing wires 7.Face before inflatable bag body, below with more gathering bracing wires 7 also are provided with bottom surface.The upper top of inflatable bag body 4
Face edge ring is arranged with foundation ditch and bag body closed loop 8.Foundation ditch is also bonded with bag body closed loop 8 using hose lining and outer cortex canvas
Sewing forms.
Specific implementation step：
(1) selecting the bonding of hose lining outer cortex canvas to be sewn into shielding bag 1, (canvas layer and rubber layer pass through irradiation test
Afterwards, two kinds of material appearances, colors do not change, and material tensile strength does not change.Canvas layer and rubber layer are anti-tie, anti-
Run-down effect, sealing property are all relatively better by checking.It is possible to stab bag body in view of waste simultaneously and leaks, the bag of selection
Body material has certain self-repair function after poking, such as MIS sizing materials).
(2) by investigating the quartz sand of 5 kinds of different models, and by shield effectiveness checking test and SHIELDING CALCULATION, select
6-8 mesh quartz sand is as shielding material 3.By outdoor checking test, measure industrial dust collector and extract 6-8 mesh model quartz sands
150 kilograms need 4 minutes, and industrial dust collector weight set is 150 kilograms, are shut down after overweight, it is necessary to which quartz sand in bucket is poured out
Restarting is extracted afterwards.Industrial dust collector continuously do not break down for 2 hours by operation.
(3) staff dressed protection tool by shielding bag rule it is folded neat after, near coal-mine fill in hole by existing
It is interior, shielding bag inflation inlet is stayed in outside hole, by pressing empty machine to be inflated shielding bag.After bag to be shielded is inflated, it will shield
Bag air inlet is fixed on guide cylinder, is directed to cylinder and is put near coal-mine and fixes, is ready for filling quartz sand, whole operation process
The middle air inlet with air purification small car is adjacent near coal-mine, extracts the aerosol of discharge in hole.
(4) funnel is installed on small rail car in advance, hole side is put during then small rail car is moved to and goes out funnel
Mouth aligns with guide cylinder import, adjusts angle, fixes funnel.Outdoor ready quartz sand is passed through on small rail car
Funnel puts hole in being transported near coal-mine, treats that small rail car puts hole side in being moved to, funnel exit aligns with to guide cylinder import
Afterwards, flashboard is opened, quartz sand is flowed into hole in free falling body state.Near coal-mine dosage is detected when filling quartz sand, when
Near coal-mine center dosage is less than 100 μ Sv/h, and a screen layer is finally formed above waste.
(5) after construction operation is completed, extracted with industrial dust collector by inner shield quartz sand is cheated to transferring barrel, pass through rail
Road dolly transports road specified location, and quartz sand radiation level is detected, and is provided according to testing result according to waste management
Handled.
(6) after quartz sand extraction finishes, continue to take away air in shielding bag using industrial dust collector, first will shielding
The rope made of hemp inside bag is lifted, and is then lifted out the rope made of hemp outside shielding bag, is gradually collapsed with rope, allows shielding bag to be about to certainly as far as possible
Bottom is wrapped up, and up lifts all ropes finally by electric block, and shielding bag is proposed to cheat.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (7)
- A kind of 1. flexible shielding method for high radioactivity foundation ditch, it is characterised in that including step：Step 1) makes, one screen layer (2) to match of processing according to the size of live foundation ditch (1)；Step 2) places screen layer (2) above foundation ditch (1) the interior radial objects for needing to shield；Step 3) and then filling shielding material (3), form it into a bulk shield；To the radial objects in foundation ditch (1) Shielded.
- A kind of 2. flexible shielding method for high radioactivity foundation ditch according to claim 1, it is characterised in that：The screen Cover layer (2) and use shielding bag, by the air-blowing formation screen layer (2) into shielding bag, and shielding material is loaded into shielding bag (3)。
- A kind of 3. flexible shielding method for high radioactivity foundation ditch according to claim 2, it is characterised in that：The screen Bag is covered to form from internal layer rubber and the bonding sewing of outer layer canvas.
- A kind of 4. flexible shielding method for high radioactivity foundation ditch according to claim 1, it is characterised in that：The screen Cover material (3) and choose 6-8 mesh model quartz sands, density 2.6t/m3, bulk density 1.6t/m3。
- A kind of 5. flexible shielding method for high radioactivity foundation ditch according to claim 4, it is characterised in that：When near coal-mine When center radioactive dosage is less than 100 μ Sv/h, reach shielding material (3) accumulation shielding thickness.
- A kind of 6. flexible shielding method for high radioactivity foundation ditch according to claim 1, it is characterised in that：Also include Step 4) constructs shield, completes after carrying out operation in the region；Shielding material (3) is extracted using industrial dust collector, Recovery.
- A kind of 7. flexible shielding method for high radioactivity foundation ditch according to claim 6, it is characterised in that：Also include Step 5), shielding bag is deflated, take out shielding bag using electric block, complete shield recovery operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595216.0A CN107346669B (en) | 2017-07-20 | 2017-07-20 | A kind of flexible shielding method for high radioactivity foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595216.0A CN107346669B (en) | 2017-07-20 | 2017-07-20 | A kind of flexible shielding method for high radioactivity foundation pit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107346669A true CN107346669A (en) | 2017-11-14 |
| CN107346669B CN107346669B (en) | 2019-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710595216.0A Active CN107346669B (en) | 2017-07-20 | 2017-07-20 | A kind of flexible shielding method for high radioactivity foundation pit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331424A (en) * | 2017-07-21 | 2017-11-07 | 中国核动力研究设计院 | A kind of reactor cavity water filling cooling system and its operating method |
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| CN204966066U (en) * | 2015-06-24 | 2016-01-13 | 深圳中广核工程设计有限公司 | Flat technological wastes material interim storage cask of medium radioactive water |
| JP5882045B2 (en) * | 2011-12-21 | 2016-03-09 | 株式会社サンメック | Radiation shielding bag |
| CN105976882A (en) * | 2016-05-31 | 2016-09-28 | 中国科学院高能物理研究所 | Nuclear radiation shielding device and method |
| CN206134271U (en) * | 2016-09-27 | 2017-04-26 | 江苏中海华核电材料科技有限公司 | Spentnuclear fuel dry -type container with polyethylene post |
-
2017
- 2017-07-20 CN CN201710595216.0A patent/CN107346669B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5882045B2 (en) * | 2011-12-21 | 2016-03-09 | 株式会社サンメック | Radiation shielding bag |
| CN204966066U (en) * | 2015-06-24 | 2016-01-13 | 深圳中广核工程设计有限公司 | Flat technological wastes material interim storage cask of medium radioactive water |
| CN105976882A (en) * | 2016-05-31 | 2016-09-28 | 中国科学院高能物理研究所 | Nuclear radiation shielding device and method |
| CN206134271U (en) * | 2016-09-27 | 2017-04-26 | 江苏中海华核电材料科技有限公司 | Spentnuclear fuel dry -type container with polyethylene post |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331424A (en) * | 2017-07-21 | 2017-11-07 | 中国核动力研究设计院 | A kind of reactor cavity water filling cooling system and its operating method |
| CN107331424B (en) * | 2017-07-21 | 2019-06-14 | 中国核动力研究设计院 | A kind of reactor cavity water filling cooling system and its operating method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107346669B (en) | 2019-06-14 |
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