CN100398751C - Natural river alta-mud sandwich seepage-reducing method - Google Patents
Natural river alta-mud sandwich seepage-reducing method Download PDFInfo
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- CN100398751C CN100398751C CNB2007101233988A CN200710123398A CN100398751C CN 100398751 C CN100398751 C CN 100398751C CN B2007101233988 A CNB2007101233988 A CN B2007101233988A CN 200710123398 A CN200710123398 A CN 200710123398A CN 100398751 C CN100398751 C CN 100398751C
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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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- Y02A20/40—Protecting water resources
- Y02A20/402—River restoration
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Abstract
A method to carry on natural river reducing infiltrates process using the bentonite directly infiltrates. Take the local original condition fresh loam, the natural sodium base bentonite as reduces infiltrates material. The main step includes: lays down a local loam breaker strip first on the excavating cleaning smooth river bed, then compaction, damages;On loam spread bentonite, above the bentonite spreads local loam in addition. After the two layer, vibrates grinds the compaction, forms reduces infiltrates the level; Finally on reduces infiltrates level to distinguish the gravel material inverted filter and the egg broken stone protector the backfill scene excavates. This invention uses using the natural material, and makes use of local materials primarily, the construction cost is low, the effect is good ,connect natural river course as a whole, both can satisfy the rivers ecology repair to reduce infiltrates guarantees the water request. Not only can maintain the rivers ecosystem the healthy development, but also meets uses in projects, has the remarkable economy, the society and the ecological benefit.
Description
One, technical field
The present invention relates to a kind of infiltration method that subtracts, relate in particular to and a kind ofly directly utilize swell soil to carry out natural river to subtract the method for oozing processing.
Two, background technology
Here related river refers to the bigger natural river of drought and water shortage area riverbed water permeability, influenced by Global climate change and socio-economic development, arid area shortage of water resources phenomenon more becomes serious, all obviously enlarged by the time and the spatial dimension of drought impact, a spot of river water source is many because of the bed material water permeability is difficult to form the water surface greatly, and numerous rivers often are in dry state.
The river is the important component part of natural ecosystems, it is the important back-up system of life on earth, for vegeto-animal survival and development provide the foundation, be the guarantee of bio-diversity in the ecosystem, system's continuity, ecologic stability, also be human indispensable lifeline.
At present, river life and health state has obtained the extensive attention of countries in the world, and it is increasing that river ecological is repaired demand.The river water yield what and have or not and then become the key that the arid area river ecological is repaired.Water is the river life and health and the decisive factor of bringing into play its ecological functions.
The most of Urban Drought and Water Shortage of northern China, the river water yield is little even dry, is difficult to satisfy river ecological and repairs demand.At arid area limited water resource amount, in the river ecological reinstatement works river course subtracted to ooze and handle the key link that is absolutely necessary.
At present, the river course subtracts the method for oozing roughly to be had following several: 1. river cure process antiseepage, and also promptly utilize concrete or stone masonry that the river course is carried out hard revetment, 2. lay geomembrane anti-seepage, 3. lay the GCL antiseepage, 4. shop argillic horizon antiseepage.Though the above two can play anti-seepage effect preferably, but there is harmful effect in the river natural ecosystems, diminish connecting each other of water (river), soil phase (riverbed, riverbank), gas phase (the above contact portion of the water surface) and biofacies (plant of inside, river and perimeter zone, animal and microorganism), the river natural ecosystems have been destroyed, river loses self-purification capacity, and water quality deterioration is accelerated; Relatively the above two are smaller to the natural ecosystems influence for third party's case, but increase the foreign matter layer of a difficult degradation in the river course, not too coordinate with natural river course, and the cost height, simultaneously, in case be subjected to the flood erosion may be by glad in flakes; Argillic horizon antiseepage then ecological effect is good, but cost is higher, some areas clay resource shortage.
Three, summary of the invention
The purpose of this invention is to provide and a kind ofly can effectively reduce the river course seepage, can keep the river course that is suitable for arid area river ecological reparation of natural river ecosystem health development to subtract infiltration method again.For river ecological reparation (or the river view makes up) provides how optional technical scheme.Technical scheme of the present invention may further comprise the steps:
(1) select local uniform soil quality, loam Tu Chang free from foreign meter, the assorted soil of desurfacing, plant roots and stems take off a layer original state loam;
(2) cleaning river course foreign material and mud are excavated to basis, design river course elevation; With excavating out the screening of sandy gravel and ovum gravel, standby;
(3) lay the local loam bed course of one deck on the river course after excavation cleaning is smooth earlier, compacting, compacted density is more than 85%, thick about 10cm, surfacing, hacking;
(4) at the natural sodium bentonite of local loam bed course upper berth one deck, above swell soil, spread the local loam of one deck then in addition, intact back, two-layer shop is with the even compacting of vibrating roller, compactness is not less than 95%, subtract infiltration layer, subtract infiltration layer for the swell soil interlayer of local loam layer up and down for natural sodium bentonite in the middle of forming, wherein, the thickness after the compacting of swell soil interlayer is 1～2cm, and the thickness after the local loam lamination on upper strata is real is 10～15cm; Cal rolling less than the position adopt auxiliary rammer compacting, adopt swell soil joint filling compacting with the works junction;
(5) with sandy gravel standby in the step (2) as the loaded filter backfill subtract infiltration layer above, and then with ovum gravel standby in the step (2) as the topping backfill on the sandy gravel loaded filter, the thickness of described loaded filter and topping is respectively 20cm and 30cm;
(6) described infiltration layer, loaded filter and the topping of subtracting should cover whole river cross-section, and side slope subtracts infiltration layer and should extend above more than the design ordinary water level 30cm, and loaded filter and topping are upwards postponed synchronously and covered fully and subtract infiltration layer.
Forbid rainy day construction, return to work behind the rain and should handle, should guarantee when laying swell soil that ground do not have ponding through airing, the multiple pressure.During the segmentation and slicing construction, the whip stitch of the adjacent scope of operation rolls width and is not less than 10cm, and with swell soil spreading seam.
If bed material is pure ovum gravel, then in the step (3) before laying local loam bed course, should lay one deck sandy gravel transition zone earlier.
If engineering district bed material is sandy gravel or thinner sand material, then only need the sandy gravel of backfill one bed thickness 25～35cm or thinner sand material in the step (5).
River course provided by the invention subtracts infiltration method, what adopt is natural materials entirely, and to gather materials on the spot, cost is low, and reducing infiltration effect is good, with the natural river course one integrated mass, can satisfy the river ecological reparation subtracts and oozes the water conservation requirement, the sound development that can keep river ecosystem again can be applied to engineerings such as river, lake, wetland and subtract and ooze, and has remarkable economical, society and ecological benefits.
Four, description of drawings
Fig. 1 oozes the processing structural representation for the river course subtracts.
Among the figure 1 on cover topping, wherein, 11 is ovum gravel topping, 12 is the sandy gravel loaded filter; 2 for subtracting infiltration layer, and wherein, 21 subtract infiltration layer for local loam, and 22 subtract infiltration layer for natural sodium bentonite, and 23 is local loam bed course; 3 is the basis, river course; 4 are design river bed elevation.
Five, the specific embodiment
Main construction sequence of the present invention is:
(1) select local uniform soil quality, loam Tu Chang free from foreign meter, the assorted soil of desurfacing, plant roots and stems take off a layer original state loam.
(2) cleaning river course foreign material and mud are excavated to basis, design river course elevation, form basis, river course 3; With the sandy gravel and the screening of ovum gravel of excavating out, standby;
(3) lay the local loam bed course 23 of one deck on the riverbed after excavation cleaning is smooth earlier, compacted density is more than 85%, thick about 10cm, surfacing, hacking;
(4) at the natural sodium bentonite of loam bed course upper berth one deck, the swell soil top is spread the local loam of one deck in addition, pursue all over evenly compacting with vibrating roller intact back, two-layer shop, avoid the uneven continuity that influences bentonite bed of actual situation, compactness is not less than 95%, in the middle of forming for natural sodium bentonite subtracts infiltration layer 22, the swell soil interlayer that is respectively local loam layer 21,22 up and down subtracts infiltration layer 2, wherein, the thickness that swell soil subtracts after infiltration layer 22 compactings is 1～2cm, and the thickness that the local loam layer on upper strata subtracts after infiltration layer 21 compactings is 10～15cm; Cal rolling less than the position adopt auxiliary rammer compacting, adopt swell soil joint filling compacting with the works junction;
(5) with sandy gravel standby in the step (2) as the loaded filter backfill subtract infiltration layer above, and then with ovum gravel standby in the step (2) as the topping backfill on the sandy gravel loaded filter, the thickness of described loaded filter and topping is respectively 20cm and 30cm;
(6) in order to reach best reducing infiltration effect; described infiltration layer, loaded filter and the topping of subtracting should cover whole river cross-section; comprise riverbed and side slope; side slope subtracts infiltration layer and should extend above more than the design ordinary water level 30cm; loaded filter and topping are upwards postponed synchronously and are covered fully and subtract infiltration layer, in case current are from the side seepage.
If bed material is pure ovum gravel, then in the step (3) before laying local loam bed course, should lay one deck sandy gravel transition zone earlier, laying depth is determined by field trial according to particle diameter, the grating of ovum gravel.
If engineering district bed material is sandy gravel or thinner sand material, then only need the sandy gravel of backfill one bed thickness 25～35cm or thinner sand material in the step (5), need not re-lay sandy gravel loaded filter and ovum gravel.
The small size construction verification should be carried out earlier before subtracting the infiltration layer large-area construction, construction can be promoted after mixture homogeneity, match ratio, grinding compacting degree, closed-water test etc. are qualified after testing.
Must detect through the sampling closed-water test after subtracting infiltration layer construction and finishing and can descend one working procedure after qualified, transmission coefficient should be less than 2 * 10 after requiring to handle
-5M/s.
Forbid rainy day construction, return to work behind the rain and should handle, should guarantee when laying swell soil that ground do not have ponding through airing, the multiple pressure.During the segmentation and slicing construction, the whip stitch of the adjacent scope of operation rolls width and is not less than 10cm, and with swell soil spreading seam.
Claims (3)
1. a natural river alta-mud sandwich seepage-reducing method is characterized in that, may further comprise the steps:
(1) select local uniform soil quality, loam Tu Chang free from foreign meter, the assorted soil of desurfacing, plant roots and stems take off a layer original state loam;
(2) cleaning river course foreign material and mud are excavated to basis, design river course elevation; With excavating out the screening of sandy gravel and ovum gravel, standby;
(3) lay the local loam bed course of one deck on the river course after excavation cleaning is smooth earlier, compacting, compacted density is more than 85%, thick about 10cm, surfacing, hacking;
(4) at the natural sodium bentonite of local loam bed course upper berth one deck, above swell soil, spread the local loam of one deck then in addition, intact back, two-layer shop is with the even compacting of vibrating roller, compactness is not less than 95%, subtract infiltration layer, subtract infiltration layer for the swell soil interlayer of local loam layer up and down for natural sodium bentonite in the middle of forming, wherein, the thickness after the compacting of swell soil interlayer is 1～2cm, and the thickness after the local loam lamination on upper strata is real is 10～15cm; Cal rolling less than the position adopt auxiliary rammer compacting, adopt swell soil joint filling compacting with the works junction;
(5) with sandy gravel standby in the step (2) as the loaded filter backfill subtract infiltration layer above, and then with ovum gravel standby in the step (2) as the topping backfill on the sandy gravel loaded filter, the thickness of described loaded filter and topping is respectively 20cm and 30cm;
(6) described infiltration layer, loaded filter and the topping of subtracting should cover whole river cross-section, and side slope subtracts infiltration layer and should extend above more than the design ordinary water level 30cm, and loaded filter and topping are upwards postponed synchronously and covered fully and subtract infiltration layer, in case current are from the side seepage;
Forbid rainy day construction, return to work behind the rain and should handle, should guarantee when laying swell soil that ground do not have ponding through airing, the multiple pressure; During the segmentation and slicing construction, the whip stitch of the adjacent scope of operation rolls width and is not less than 10cm, and with swell soil spreading seam.
2. natural river alta-mud sandwich seepage-reducing method according to claim 1 is characterized in that, is the natural river of pure ovum gravel for bed material, before laying local loam bed course, should lay one deck sandy gravel transition zone earlier in the step (3).
3. natural river alta-mud sandwich seepage-reducing method according to claim 1 and 2, it is characterized in that, for bed material is the natural river of sandy gravel or thinner sand material, only needs in the step (5) at sandy gravel that subtracts backfill one bed thickness 25～35cm above the infiltration layer or thinner sand material.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007101233988A CN100398751C (en) | 2007-06-28 | 2007-06-28 | Natural river alta-mud sandwich seepage-reducing method |
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| CNB2007101233988A CN100398751C (en) | 2007-06-28 | 2007-06-28 | Natural river alta-mud sandwich seepage-reducing method |
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| CN100398751C true CN100398751C (en) | 2008-07-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106980759A (en) * | 2017-03-24 | 2017-07-25 | 中国矿业大学(北京) | A kind of large-scale mine ecological recovery and the intelligence system and method kept |
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| CN102251499B (en) * | 2011-05-26 | 2013-01-02 | 北京智泽山水生态环境技术有限公司 | Ecological permeability reducing method and ecological permeability reducing soil for river |
| CN102296563B (en) * | 2011-05-26 | 2013-12-18 | 北京智泽山水生态环境技术有限公司 | Ecological permeability-reducing method of sand channel |
| CN102400450B (en) * | 2011-09-23 | 2013-10-09 | 宣化县中冶科技有限公司 | Engineering method for reducing permeability of landscape river soil and sand foundation |
| CN102839629B (en) * | 2012-08-17 | 2015-05-20 | 北京科技大学 | Method and structure for disturbed riverbed seepage-proof governing |
| CN102936884B (en) * | 2012-11-21 | 2014-07-30 | 中国农业大学 | Method for reducing permeability of regenerated water riverway |
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| CN106087854B (en) * | 2016-08-01 | 2019-02-26 | 中建八局第一建设有限公司 | A kind of man-made lake backing layer and its construction method and application |
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| RU1772303C (en) * | 1991-01-08 | 1992-10-30 | Башкирский государственный научно-исследовательский и проектный институт нефтяной промышленности | Hydro-insulation compound |
| AU672261B2 (en) * | 1993-01-25 | 1996-09-26 | American Colloid Company | A plurality of water-sealed concrete sections and methods of waterproofing an area of potential water leakage between concrete sections |
| CN1242126C (en) * | 2003-12-15 | 2006-02-15 | 西北农林科技大学 | Channel joint leakage prevention construction method |
| CN1317458C (en) * | 2005-07-14 | 2007-05-23 | 西北农林科技大学 | Construction method for preventing seepage of channel joints |
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2007
- 2007-06-28 CN CNB2007101233988A patent/CN100398751C/en not_active Expired - Fee Related
Patent Citations (4)
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|---|---|---|---|---|
| RU1772303C (en) * | 1991-01-08 | 1992-10-30 | Башкирский государственный научно-исследовательский и проектный институт нефтяной промышленности | Hydro-insulation compound |
| AU672261B2 (en) * | 1993-01-25 | 1996-09-26 | American Colloid Company | A plurality of water-sealed concrete sections and methods of waterproofing an area of potential water leakage between concrete sections |
| CN1242126C (en) * | 2003-12-15 | 2006-02-15 | 西北农林科技大学 | Channel joint leakage prevention construction method |
| CN1317458C (en) * | 2005-07-14 | 2007-05-23 | 西北农林科技大学 | Construction method for preventing seepage of channel joints |
Non-Patent Citations (1)
| Title |
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| AU672261B B2 1996.09.26 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106980759A (en) * | 2017-03-24 | 2017-07-25 | 中国矿业大学(北京) | A kind of large-scale mine ecological recovery and the intelligence system and method kept |
| CN106980759B (en) * | 2017-03-24 | 2018-04-13 | 中国矿业大学(北京) | A kind of large-scale mine ecological recovery and the intelligence system and method kept |
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