CN103466659A - Manufacturing method of salt pan sand pit plate - Google Patents
Manufacturing method of salt pan sand pit plate Download PDFInfo
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- CN103466659A CN103466659A CN2013104376122A CN201310437612A CN103466659A CN 103466659 A CN103466659 A CN 103466659A CN 2013104376122 A CN2013104376122 A CN 2013104376122A CN 201310437612 A CN201310437612 A CN 201310437612A CN 103466659 A CN103466659 A CN 103466659A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a manufacturing method of a salt pan sand pit plate. According to the manufacturing method, a hole is dug in the ground and a cofferdam which is higher than the ground is formed along the edge of the pond, thus forming a salt pan crystallization pond; the inner side wall of the cofferdam and the pit wall form the pond wall of the crystallization pond, and the pit bottom is the bottom of the crystallization pond; the manufacturing method of the sand pit plate comprises the following steps: (1), laying a plastic anti-seeping film on the bottom and the wall of the crystallization pond; (2), filling mortar into the crystallization pond and settling to form a settlement layer, removing the water from the settlement layer, then rolling the settlement layer, so as to form a sand pit plate bottom layer; (3), filling the mortar into the crystallization pond again, settling to form a decomposition layer, removing the water from the decomposition layer, rolling the decomposition layer to form a sand pit plate top plate; and (4), immersing the sand pit plate by saturated brine, discharging brine, and then drying in air, thus finally obtaining the salt pan sand pit plate. The method has the advantages that the raw materials are easily available, the manufacturing process is simple; the sand pit plate is sturdy and durable, is high in compressive strength, low in repairing frequency and good in anti-seeping effect, and the production efficiency and the quality of crude salts are high.
Description
Technical field
The present invention relates to the making method of husky pond, a kind of salt pan plate, belong to the process for preparing salt by working up seawater technical field.
Background technology
Adopt the preparing salt by working up seawater technology to have long history in China, far away from the The Spring and Autumn Period, China just is with in southeastern coast and side, Bohai Sea Gulf one Salt production that certain scale occurs.The famous historian's Ssu-ma Chien in Han dynasty in " this note of Records of the Historian summer ", once had " Hai Dai ties up Qingzhou ... extensively rush down at beach, and halogen is scolded in the field of fainting ... the tribute salt of fainting " record.At the initial stage Zhou Dynasty, Qi is the profit of fishing salt " logical " just, and the developing history of China's salt industry has all been described in the record of " Later Wei Dynasty moves the Ye, an ancient place in Henan Province order and is close to sea and gets salt by evaporation of sea-water, boil the salt off the water, time put salt kitchen range 540 to the north of Qingzhou have a surplus " in Northern and Southern Dynasties periods etc.Especially since reforming and opening up to the outside world after the foundation of new China, fast development along with Chinese national economy, the Salt production of China has marched toward new historical epoch, and the Salt production of China presents quick industrialization, modern production situation, and China becomes world Salt production big country at one stroke.
Traditional Salt production, be that seawater or subsurface brine are poured in salt pond by after the spontaneous evaporation crystallization, separating out crude salt, and it is the effect in salt pond that this process be unable to do without the crude salt crystallizing pond.At the bottom of traditional crude salt crystallizing pond pond, be undertaken simple smooth and roll after compacting and pour into bittern and evaporate brine by the pond by digging out bottom, there are unavoidably the drawbacks such as bittern seepage and outside bittern intrusion at the bottom of the pond, salt pond that this mode is made in the process of evaporating brine, thereby cause the outside bittern of the waste of bittern seepage in salt pond and salt pond to be invaded and to the phenomenons such as the pollution generation of crude salt in pond.In addition, be subject to the restriction of physical geography condition at the bottom of traditional pond, salt pond, need often by manually repairing beach and consolidation process, annual is repaiied the beach frequency more than 2 times, not only waste time and energy, and easily cause the pollution of crude salt, have a strong impact on output and quality that crude salt is produced, therefore, at the bottom of making a kind of firm, durable crystallizing pond pond, salt pan---" Sha Chiban " solves bittern to ooze halogen, reduce and repair the beach frequency, reduce former salt pollution and one of the effective means of raising labour efficiency.
Summary of the invention
The purpose of this invention is to provide a kind of husky pond, simple salt pan board manufacturing method of making.
Technical scheme of the present invention is: comprise the step by digging pit on the ground and piling up the salt pan crystallizing pond that the mode in overhead cofferdam forms along the limit, hole, the inner side-wall in cofferdam and hole wall form the pool wall of crystallizing pond, at the bottom of the end, hole is the crystallizing pond pond, its characteristics are: the mode by perfusion mortar in crystallizing pond forms Ban，Sha pond, husky pond board manufacturing method at the bottom of pond and comprises the following steps:
(1) anti seepage membrane is laid
By repairing smooth and compacting at the bottom of the crystallizing pond pond, then laying plastic leakage-proof film at the bottom of pond and on pool wall, by the bottom of pond and pool wall cover fully with antiseep;
(2) husky pond plate bottom is made
Mortar is poured in crystallizing pond, in grouting time, flows and shakeouts processing so that at the bottom of the settled layer formed after grains of sand sedimentation is covered with pond the mortar poured into, when settled layer thickness reaches 10-20 centimetre, stop grouting, then remove the water above settled layer, then settled layer is rolled compacting and settled layer is carried out to the equating processing, thereby completed the making of husky pond plate bottom;
(3) husky pond plate top layer is made
Again mortar is poured in crystallizing pond, in the time of grouting, the mortar poured into is flowed to shakeout and process so that the settled layer formed after grains of sand sedimentation is covered with husky pond plate bottom surface, when deposit thickness reaches 10-20 centimetre, stop grouting, then remove the water above settled layer, then settled layer is rolled compacting and settled layer is carried out to the equating processing, thereby completed the making of husky pond plate top layer; Then complete the making of the husky pond plate formed by bottom and top layer.
Also comprise the step of husky pond plate being carried out to immersion treatment in described making step, be about to the reach capacity bittern of state of sodium-chlor and pass into crystallizing pond, the husky pond plate consisted of bottom and top layer is carried out to the immersion more than 4 hours, after having soaked, bittern is discharged, then can use after the airing of 1-2 days.
The mortar of using in described step (2) is to be not more than sand and the rear slurries that form of water mixing of 2 millimeters by particle diameter, and in mortar, the volumn concentration of sand is 10-40%.
The mortar of using in described step (3) is to be not more than after bittern that the sand of 2 millimeters and sodium chloride concentration are 18-24% mixes by particle diameter the slurries that form, and in mortar, the volumn concentration of sand is 10-40%.
The compactness rolled in described step (2) and step (3), more than 93%, rolls and can adopt cal rolling, also can adopt artificial stone roller roll extrusion.
In the present invention, anti seepage membrane used is general PVC antiseepage salt film in saltern, and sand can adopt river sand or sea sand.
Effect of the present invention and benefit are: the making raw material of husky pond plate is easy to get, and husky pond plate is made simple, convenient; The husky pond plate of making is sturdy and durable, has obviously improved the ultimate compression strength at the bottom of pond, has reduced frequency of maintenance, saves a large amount of man power and materials; Obviously improve the antiseepage function in salt pond, reduced the infiltration of waste liquid outside the seepage of bittern in the salt pond and salt pond, improved the comprehensive utilization ratio of bittern, reduced the pollution of crude salt, significantly improved production efficiency and the salt quality of crude salt.
The accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
Embodiment 1
With reference to Fig. 1, to dig out at first on the ground hole, pond 1, and be piled into overhead cofferdam 2 along the limit, hole on the ground, cofferdam 2 and hole, pond 1 form crystallizing pond, and the hole wall in the inner side-wall in cofferdam 2 and hole, pond 1 forms the pool wall of crystallizing pond, referring to (a) part in Fig. 1.After forming, crystallizing pond forms Ban，Sha pond, husky pond plate making step by the mode to perfusion mortar in crystallizing pond at the bottom of pond as described below.
(1) anti seepage membrane is laid
Will be at the bottom of the crystallizing pond pond repair smooth and compacting, then laying plastic leakage-proof film 3 at the bottom of pond and on pool wall, by the bottom of pond and pool wall cover fully with antiseep, referring to (a) part in Fig. 1; The edge of anti seepage membrane will prolong and the mid-way of 2 end faces to cofferdam.
(2) husky pond plate bottom is made
Mortar is poured in crystallizing pond, in grouting time, flows and shakeouts processing so that at the bottom of the settled layer formed after grains of sand sedimentation is covered with pond the mortar poured into, when settled layer thickness reaches 10 centimetres, stop grouting, then remove the water above settled layer, then settled layer is carried out to artificial stone roller roll extrusion compacting, compaction requirement is more than 93%, after compacting, settled layer is carried out to the equating processing, thereby complete the making of husky pond plate bottom 4, referring to (b) part in Fig. 1; The mortar that this step is used is to be not more than sand and the rear slurries that form of water mixing of 2 millimeters by particle diameter, and in mortar, the volumn concentration of sand is 10%.
(3) husky pond plate top layer is made
Again in crystallizing pond, pour into mortar, in the time of grouting, the mortar poured into is flowed to shakeout and process so that the settled layer formed after grains of sand sedimentation is covered with husky pond plate bottom surface, when deposit thickness reaches 10 centimetres, stop grouting, then remove the water above settled layer, then settled layer is carried out to artificial stone roller roll extrusion compacting, compaction requirement is more than 93%, after compacting, settled layer is carried out to the equating processing, thereby complete the making of husky pond plate top layer 5, then complete the making of the husky pond plate formed by bottom 4 and top layer 5; Referring to (c) part in Fig. 1.The mortar that this step is used is to be not more than after bittern that the sand of 2 millimeters and sodium chloride concentration are 18% mixes by particle diameter the slurries that form, and in mortar, the volumn concentration of sand is 10%.
(4) immersion treatment
The reach capacity bittern of state of sodium-chlor is passed into to crystallizing pond, the husky pond plate consisted of bottom and top layer is carried out to the immersion of 4 hours, after having soaked, bittern is all discharged, then can use after the airing of 1 day.
With reference to Fig. 1, to dig out at first on the ground hole, pond 1, and be piled into overhead cofferdam 2 along the limit, hole on the ground, cofferdam 2 and hole, pond 1 form crystallizing pond, and the hole wall in the inner side-wall in cofferdam 2 and hole, pond 1 forms the pool wall of crystallizing pond, referring to (a) part in Fig. 1.After forming, crystallizing pond forms Ban，Sha pond, husky pond plate making step by the mode to perfusion mortar in crystallizing pond at the bottom of pond as described below.
(1) anti seepage membrane is laid
Will be at the bottom of the crystallizing pond pond repair smooth and compacting, then laying plastic leakage-proof film 3 at the bottom of pond and on pool wall, by the bottom of pond and pool wall cover fully with antiseep, referring to (a) part in Fig. 1; The edge of anti seepage membrane will prolong and the mid-way of 2 end faces to cofferdam.
(2) husky pond plate bottom is made
Mortar is poured in crystallizing pond, in grouting time, flows and shakeouts processing so that at the bottom of the settled layer formed after grains of sand sedimentation is covered with pond the mortar poured into, when settled layer thickness reaches 15 centimetres, stop grouting, then remove the water above settled layer, then settled layer is carried out to artificial stone roller roll extrusion compacting, compaction requirement is more than 93%, after compacting, settled layer is carried out to the equating processing, thereby complete the making of husky pond plate bottom 4, referring to (b) part in Fig. 1; The mortar that this step is used is to be not more than sand and the rear slurries that form of water mixing of 1.5 millimeters by particle diameter, and in mortar, the volumn concentration of sand is 20%.
(3) husky pond plate top layer is made
Again in crystallizing pond, pour into mortar, in the time of grouting, the mortar poured into is flowed to shakeout and process so that the settled layer formed after grains of sand sedimentation is covered with husky pond plate bottom surface, when deposit thickness reaches 15 centimetres, stop grouting, then remove the water above settled layer, then settled layer is carried out to artificial stone roller roll extrusion compacting, compaction requirement is more than 93%, after compacting, settled layer is carried out to the equating processing, thereby complete the making of husky pond plate top layer 5, then complete the making of the husky pond plate formed by bottom 4 and top layer 5; Referring to (c) part in Fig. 1.The mortar that this step is used is to be not more than after bittern that the sand of 1.5 millimeters and sodium chloride concentration are 20% mixes by particle diameter the slurries that form, and in mortar, the volumn concentration of sand is 20%.
(4) immersion treatment
The reach capacity bittern of state of sodium-chlor is passed into to crystallizing pond, the husky pond plate consisted of bottom and top layer is carried out to the immersion of 5 hours, after having soaked, bittern is all discharged, then can use after the airing of 1.5 days.
With reference to Fig. 1, to dig out at first on the ground hole, pond 1, and be piled into overhead cofferdam 2 along the limit, hole on the ground, cofferdam 2 and hole, pond 1 form crystallizing pond, and the hole wall in the inner side-wall in cofferdam 2 and hole, pond 1 forms the pool wall of crystallizing pond, referring to (a) part in Fig. 1.After forming, crystallizing pond forms Ban，Sha pond, husky pond plate making step by the mode to perfusion mortar in crystallizing pond at the bottom of pond as described below.
(1) anti seepage membrane is laid
Will be at the bottom of the crystallizing pond pond repair smooth and compacting, then laying plastic leakage-proof film 3 at the bottom of pond and on pool wall, by the bottom of pond and pool wall cover fully with antiseep, referring to (a) part in Fig. 1; The edge of anti seepage membrane will prolong and the mid-way of 2 end faces to cofferdam.
(2) husky pond plate bottom is made
Mortar is poured in crystallizing pond, in grouting time, flows and shakeouts processing so that at the bottom of the settled layer formed after grains of sand sedimentation is covered with pond the mortar poured into, when settled layer thickness reaches 20 centimetres, stop grouting, then remove the water above settled layer, then settled layer is carried out to artificial stone roller roll extrusion compacting, compaction requirement is more than 93%, after compacting, settled layer is carried out to the equating processing, thereby complete the making of husky pond plate bottom 4, referring to (b) part in Fig. 1; The mortar that this step is used is to be not more than sand and the rear slurries that form of water mixing of 1 millimeter by particle diameter, and in mortar, the volumn concentration of sand is 30%.
(3) husky pond plate top layer is made
Again in crystallizing pond, pour into mortar, in the time of grouting, the mortar poured into is flowed to shakeout and process so that the settled layer formed after grains of sand sedimentation is covered with husky pond plate bottom surface, when deposit thickness reaches 20 centimetres, stop grouting, then remove the water above settled layer, then settled layer is carried out to artificial stone roller roll extrusion compacting, compaction requirement is more than 93%, after compacting, settled layer is carried out to the equating processing, thereby complete the making of husky pond plate top layer 5, then complete the making of the husky pond plate formed by bottom 4 and top layer 5; Referring to (c) part in Fig. 1.The mortar that this step is used is to be not more than after bittern that the sand of 1 millimeter and sodium chloride concentration are 22% mixes by particle diameter the slurries that form, and in mortar, the volumn concentration of sand is 30%.
(4) immersion treatment
The reach capacity bittern of state of sodium-chlor is passed into to crystallizing pond, the husky pond plate consisted of bottom and top layer is carried out to the immersion of 6 hours, after having soaked, bittern is all discharged, then can use after the airing of 2 days.
With reference to Fig. 1, to dig out at first on the ground hole, pond 1, and be piled into overhead cofferdam 2 along the limit, hole on the ground, cofferdam 2 and hole, pond 1 form crystallizing pond, and the hole wall in the inner side-wall in cofferdam 2 and hole, pond 1 forms the pool wall of crystallizing pond, referring to (a) part in Fig. 1.After forming, crystallizing pond forms Ban，Sha pond, husky pond plate making step by the mode to perfusion mortar in crystallizing pond at the bottom of pond as described below.
(1) anti seepage membrane is laid
Will be at the bottom of the crystallizing pond pond repair smooth and compacting, then laying plastic leakage-proof film 3 at the bottom of pond and on pool wall, by the bottom of pond and pool wall cover fully with antiseep, referring to (a) part in Fig. 1; The edge of anti seepage membrane will prolong and the mid-way of 2 end faces to cofferdam.
(2) husky pond plate bottom is made
Mortar is poured in crystallizing pond, in grouting time, flows and shakeouts processing so that at the bottom of the settled layer formed after grains of sand sedimentation is covered with pond the mortar poured into, when settled layer thickness reaches 20 centimetres, stop grouting, then remove the water above settled layer, then settled layer is carried out to artificial stone roller roll extrusion compacting, compaction requirement is more than 93%, after compacting, settled layer is carried out to the equating processing, thereby complete the making of husky pond plate bottom 4, referring to (b) part in Fig. 1; The mortar that this step is used is to be not more than sand and the rear slurries that form of water mixing of 1 millimeter by particle diameter, and in mortar, the volumn concentration of sand is 40%.
(3) husky pond plate top layer is made
Again in crystallizing pond, pour into mortar, in the time of grouting, the mortar poured into is flowed to shakeout and process so that the settled layer formed after grains of sand sedimentation is covered with husky pond plate bottom surface, when deposit thickness reaches 20 centimetres, stop grouting, then remove the water above settled layer, then settled layer is carried out to artificial stone roller roll extrusion compacting, compaction requirement is more than 93%, after compacting, settled layer is carried out to the equating processing, thereby complete the making of husky pond plate top layer 5, then complete the making of the husky pond plate formed by bottom 4 and top layer 5; Referring to (c) part in Fig. 1.The mortar that this step is used is to be not more than after bittern that the sand of 1 millimeter and sodium chloride concentration are 24% mixes by particle diameter the slurries that form, and in mortar, the volumn concentration of sand is 40%.
(4) immersion treatment
The reach capacity bittern of state of sodium-chlor is passed into to crystallizing pond, the husky pond plate consisted of bottom and top layer is carried out to the immersion of 8 hours, after having soaked, bittern is all discharged, then can use after the airing of 2 days.
Adopt the husky pond plate of different thickness, the effect obtained is also different, and the thickness of husky pond plate is more thick better in theory, but husky pond plate is too thick, and the quantities when making is also large, and very uneconomical from the investment angle, it is necessary therefore controlling suitable husky pond plate thickness; Generally speaking, if the crystallizing pond cofferdam is higher, should adopt thicker husky pond plate, but husky pond plate thickness and cofferdam height do not have certain proportionlity.
After the husky pond plate that embodiment 1-4 makes and crystallizing pond thereof come into operation, after aspect frequency of maintenance, saving bittern, volume increase and impurity reduced rate, with traditional crystallizing pond, carrying out long-term simultaneous test, what draw the results are shown in Table 1.As can be seen from the table, frequency of maintenance of the present invention, save bittern, effect of increasing production is good, the impurity reduced rate is high.
Table 1 comparative test result table
Claims (5)
1. the making method of husky pond, salt pan plate, comprise the step by digging pit on the ground and piling up the salt pan crystallizing pond that the mode in overhead cofferdam forms along the limit, hole, the inner side-wall in cofferdam and hole wall form the pool wall of crystallizing pond, at the bottom of the end, hole is the crystallizing pond pond, it is characterized in that: the mode by perfusion mortar in crystallizing pond forms Ban，Sha pond, husky pond board manufacturing method at the bottom of pond and comprises the following steps:
(1) anti seepage membrane is laid
By repairing smooth and compacting at the bottom of the crystallizing pond pond, then laying plastic leakage-proof film at the bottom of pond and on pool wall, by the bottom of pond and pool wall cover fully with antiseep;
(2) husky pond plate bottom is made
Mortar is poured in crystallizing pond, in grouting time, flows and shakeouts processing so that at the bottom of the settled layer formed after grains of sand sedimentation is covered with pond the mortar poured into, when settled layer thickness reaches 10-20 centimetre, stop grouting, then remove the water above settled layer, then settled layer is rolled compacting and settled layer is carried out to the equating processing, thereby completed the making of husky pond plate bottom;
(3) husky pond plate top layer is made
Again mortar is poured in crystallizing pond, in the time of grouting, the mortar poured into is flowed to shakeout and process so that the settled layer formed after grains of sand sedimentation is covered with husky pond plate bottom surface, when deposit thickness reaches 10-20 centimetre, stop grouting, then remove the water above settled layer, then settled layer is rolled compacting and settled layer is carried out to the equating processing, thereby completed the making of husky pond plate top layer, then completed the making of the husky pond plate formed by bottom and top layer.
2. the making method of husky pond, salt pan as claimed in claim 1 plate, it is characterized in that: also comprise the step of husky pond plate being carried out to immersion treatment in described making step, be about to the reach capacity bittern of state of sodium-chlor and pass into crystallizing pond, the husky pond plate consisted of bottom and top layer is carried out to the immersion more than 4 hours, after having soaked, bittern is discharged, then can use after the airing of 1-2 days.
3. the making method of husky pond, salt pan as claimed in claim 1 plate is characterized in that: the mortar of using in described step (2) is to be not more than after the sand of 2 millimeters and water mix by particle diameter the slurries that form, and in mortar, the volumn concentration of sand is 10-40%.
4. the making method of husky pond, salt pan as claimed in claim 1 plate, it is characterized in that: the mortar of using in described step (3) is to be not more than after bittern that the sand of 2 millimeters and sodium chloride concentration are 18-24% mixes by particle diameter the slurries that form, and in mortar, the volumn concentration of sand is 10-40%.
5. the making method of husky pond, salt pan as claimed in claim 1 plate, it is characterized in that: the compactness rolled in described step (2) and step (3) is more than 93%.
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| CN2013104376122A CN103466659A (en) | 2013-09-24 | 2013-09-24 | Manufacturing method of salt pan sand pit plate |
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| CN2013104376122A CN103466659A (en) | 2013-09-24 | 2013-09-24 | Manufacturing method of salt pan sand pit plate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882871A (en) * | 2014-01-26 | 2014-06-25 | 化工部长沙设计研究院 | Rapid construction method for seepage-proof dam of salt pan |
| CN106564915A (en) * | 2016-10-26 | 2017-04-19 | 化工部长沙设计研究院 | Film laying anti-seepage salt pan and building method thereof |
| CN108569709A (en) * | 2018-07-27 | 2018-09-25 | 茫崖兴元钾肥有限责任公司 | A kind of novel isolation salt pan building method |
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| KR20110035685A (en) * | 2009-09-30 | 2011-04-06 | 진양화학 주식회사 | Floor article for salt pan |
| CN102167361A (en) * | 2011-04-26 | 2011-08-31 | 江苏省东泰盐业有限公司 | Salt manufacturing crystallization pond |
| CN102745722A (en) * | 2012-07-20 | 2012-10-24 | 中蓝连海设计研究院 | Novel three-proofing salt field and construction method thereof |
| CN102992356A (en) * | 2012-12-18 | 2013-03-27 | 莱州诚源盐化有限公司 | Method for rapidly building anti-seepage salt pond |
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2013
- 2013-09-24 CN CN2013104376122A patent/CN103466659A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110035685A (en) * | 2009-09-30 | 2011-04-06 | 진양화학 주식회사 | Floor article for salt pan |
| CN102167361A (en) * | 2011-04-26 | 2011-08-31 | 江苏省东泰盐业有限公司 | Salt manufacturing crystallization pond |
| CN102745722A (en) * | 2012-07-20 | 2012-10-24 | 中蓝连海设计研究院 | Novel three-proofing salt field and construction method thereof |
| CN102992356A (en) * | 2012-12-18 | 2013-03-27 | 莱州诚源盐化有限公司 | Method for rapidly building anti-seepage salt pond |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882871A (en) * | 2014-01-26 | 2014-06-25 | 化工部长沙设计研究院 | Rapid construction method for seepage-proof dam of salt pan |
| CN103882871B (en) * | 2014-01-26 | 2015-08-19 | 化工部长沙设计研究院 | A kind of antiseepage dam, salt pan fast construction method |
| CN106564915A (en) * | 2016-10-26 | 2017-04-19 | 化工部长沙设计研究院 | Film laying anti-seepage salt pan and building method thereof |
| CN106564915B (en) * | 2016-10-26 | 2018-02-13 | 化工部长沙设计研究院 | A kind of plastic film mulch antiseepage salt pan and its construction method |
| CN108569709A (en) * | 2018-07-27 | 2018-09-25 | 茫崖兴元钾肥有限责任公司 | A kind of novel isolation salt pan building method |
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Application publication date: 20131225 |