CN102322067B - Method for treating landslide projects through combining chemical electroosmosis method with micro anti-slide piles - Google Patents
Method for treating landslide projects through combining chemical electroosmosis method with micro anti-slide piles Download PDFInfo
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- CN102322067B CN102322067B CN2011101751644A CN201110175164A CN102322067B CN 102322067 B CN102322067 B CN 102322067B CN 2011101751644 A CN2011101751644 A CN 2011101751644A CN 201110175164 A CN201110175164 A CN 201110175164A CN 102322067 B CN102322067 B CN 102322067B
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- landslide
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000000126 substance Substances 0.000 title claims abstract description 21
- 238000005370 electroosmosis Methods 0.000 title claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 239000002689 soil Substances 0.000 claims abstract description 9
- 239000004567 concrete Substances 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 claims abstract description 5
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000005684 electric field Effects 0.000 abstract description 2
- 238000003908 quality control method Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 abstract 1
- 230000006378 damage Effects 0.000 description 7
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 6
- 239000011435 rock Substances 0.000 description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005685 electric field effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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Classifications
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
一种化学电渗法联合微型抗滑桩治理滑坡工程的方法，通过在钻孔内布置金属电极并灌入不同的化学溶液，在直流电场作用下，形成电渗和化学反应，提高滑动带潜在破坏面的抗剪强度；然后在钻孔内浇筑混凝土，形成微型钢筋混凝土抗滑桩体系，提供滑坡阻滑力。本发明的优点和效果在于：经过化学电渗法对潜在滑坡带软弱土层的电渗加固，显著提高潜在滑坡带的抗剪强度系数，有效减少抗滑桩或其它治理方法的处理费用；微型抗滑桩所需的钻孔孔径较小，且与化学电渗法在同一钻孔内依次施工完成，钻孔难度和费用低；有效提高滑坡滑动带抗剪强度和阻滑力。该方法施工工艺简单、可操作性强，便于质量控制，经济效益明显，治理滑坡效果显著。
A method of chemical electroosmosis combined with miniature anti-slide piles to control landslides. By arranging metal electrodes in boreholes and pouring different chemical solutions, under the action of a direct current electric field, electroosmosis and chemical reactions are formed to improve the potential of sliding zones. The shear strength of the failure surface; then concrete is poured in the borehole to form a micro-reinforced concrete anti-slide pile system to provide landslide resistance. The advantages and effects of the present invention are: the electroosmotic reinforcement of the weak soil layer in the potential landslide zone through the chemical electroosmosis method can significantly improve the shear strength coefficient of the potential landslide zone, and effectively reduce the processing cost of anti-slide piles or other treatment methods; The bore hole required by the anti-slide pile is small, and the construction is completed sequentially in the same bore hole with the chemical electroosmosis method, and the drilling difficulty and cost are low; effectively improving the shear strength and anti-slip force of the landslide sliding zone. The method has the advantages of simple construction technology, strong operability, convenient quality control, obvious economic benefit and remarkable landslide control effect.
Description
Technical field
The invention belongs to rockslide and administer field of engineering technology, a kind of method for the treatment of landslide projects through combining chemical electroosmosis method with micro anti-slide piles.
Background technology
China is a country that landslide disaster is quite serious, and landslide disaster directly affects people's life, property safety, and landslide control is a national disaster prevention and mitigation engineering that technical difficulty is high, investment amount large, construction is dangerous and destructiveness is huge.Along with the running of Three Gorges Projects normal pool level, Landslide Bodies of The Three Gorges Reservoir Region is administered engineering and is seemed particularly outstanding, and the landslide, reservoir area will directly affect shipping and safety of dam body.At present the improvement of sliding mass is mainly concentrated on and cuts slope, lightening and adverse pressure, antiskid retaining wall is set, on antislide pile, anchoring and the several methods such as prestress anchoraging, antiskid key; And relatively less for the technical method of potential sliding zone shear strength processing aspect.
Before the present invention, Chinese patent " slope body the antislide pile " (patent No.: ZL200410008780.0) disclose a kind of resistance to compression side V-shaped antislide pile on cross section, when the soil body has local distortion, sliding mass can be regional mobile along the antislide pile external surface to the V-arrangement that consists of between antislide pile in twos, sliding mass can be pressed closeer and closeer, so that form arching, thereby guarantee that the landslide is stable; But, drilling construction difficulty special due to the stake type is large, construction cost is higher; Owing to potential slide plane effectively not being processed, the required anti-skid power that applies is larger simultaneously, causes engineering quantity increase, processing cost to increase.Chinese patent " limit landslide destruction face locking body and installation method thereof the " (patent No.: ZL200910103618.X) disclose landslide, a kind of limit destruction face locking body, by fill out the mixture of quicklime and expansion agent in locking body, after squeezing into locking body, can combine closely with hole wall after locking body suction in boring, strengthen the integral rigidity between Sliding Plane top, limit Rock And Soil, sliding bed and locking body; But the stake footpath is relatively large, the drilling construction cost is higher, and the just use of circle of overcoat also impels treatment cost to raise; Locking body is limited to the adsorption capacity of the moisture content in sliding mass.Although these methods are all one of effective ways of administering on the landslide; But the formation of the face of destruction and the key link that perforation is induced landslide, therefore, expansion, the potential sliding zone shear strength parameter of enhancing of containment destruction face are the important technology approach of administering the landslide with potential geology potential safety hazard.But prior art is to improve the work of doing aspect Latent destruction face shear strength parameter less, and do not improve preferably the technical method of Latent destruction face; And only administer the landslide by conventional methods such as antislide pile or anchorinies, the required skid resistance of paying and engineering cost are relatively high.
Summary of the invention
The object of the invention is to overcome defects, unite and improve the sliding zone shear strength and set up two kinds of anti-skid power method system and administer sliding mass, process potential landslide in conjunction with chemical electroosmosis method and destroy face, improve shear strength, and utilize Miniature anti-slide pile to provide the landslide anti-skid power, strengthen resistance to overturning between slide plane top Rock And Soil, sliding bed and antislide pile, thereby a kind of economy, the technical method for the treatment of landslide projects through combining chemical electroosmosis method with micro anti-slide piles efficiently are provided.
A kind of method for the treatment of landslide projects through combining chemical electroosmosis method with micro anti-slide piles, by arranging metal electrode and pour into different chemical solutions in boring, then pass to direct current, under the DC electric field effect, in the sliding zone weak soil, positively charged water and cationic solution are to cathode flow, electronegative anion solutions anode flows, and forms electric osmose and chemical reaction, thereby improves sliding zone Latent destruction face weak soil shear strength; Then concreting in boring, form miniature reinforced concrete anti-slide pile system and administer the landslide resistance to overturning.
Boring aperture of the present invention is between 150-300 mm, and concrete perfusion after chemical electric osmose processing finishes forms the Miniature anti-slide pile of stake footpath between 150-300 mm, plays the effect that strengthens the anti-skid power of sliding mass; Distribution of boreholes and the degree of depth are definite according to geological exploration sliding zone position and tendency result, and the spacing of wells is 2-6 times of bore diameter, and sliding zone 2-5 m is passed through in boring.
Metal electrode of the present invention is reinforcing bar, its diameter between 15-25 mm, length between 5-30 m, in order to facilitate connecting cable, the electrode steel bar 0.2-0.3 m that generally bassets; Electrode passes through potential sliding zone rock-soil layer; Yin, yang electrode interlaced arrangement, and the counter-rotating electrode is set between two electrodes.
The chemical solution of the acceleration electric osmose speed that the present invention adopts is calcium chloride solution and sodium silicate solution; Inject calcium chloride solution by the top in positive electrode place boring, make the on-the-spot solution concentration of boring reach 15-20 % after adding; To the interior Implanted Silicon acid sodium solution of negative electrode place boring, make the on-the-spot solution concentration of boring reach 30-40 % by the top after adding.
DC electric field of the present invention according to the difference of on-the-spot soil nature, moisture content, is determined operating voltage and electric current, and general voltage is between 80-120 V, and electric current is between 60-200 A.
Advantage of the present invention and effect are: through chemical electroosmosis method, potential landslide is reinforced with the electric osmose of soft layer, significantly improve the shear strength coefficient of potential landslide band, effectively reduce the disposal cost of antislide pile or other improvement method; Compare with common antislide pile, the required boring aperture of Miniature anti-slide pile of the present invention is less, boring difficulty and expense relative reduce; Chemical electroosmosis method and Miniature anti-slide pile construction are completed in same boring successively, under the prerequisite that does not increase the boring expense, effectively improve landslide sliding zone shear strength, effectively arrange simultaneously sliding resistance; Calcium chloride solution, sodium silicate solution and the salt and the sediment that occur to generate after chemical reaction do not pollute environment, and the prices of raw and semifnished materials are cheap.The method construction technology is simple, workable, is convenient to quality control, and economic benefit is obvious, administers the landslide effect remarkable.
Description of drawings
Fig. 1 is landslide control longitudinal profile structural representation of the present invention;
Fig. 2 is landslide control cross-sectional structure schematic diagram of the present invention;
Wherein (1) is sliding mass, (2) be sliding zone, (3) for stablizing basement rock, (4) be boring, (5) are metal electrode, and (6) are the counter-rotating metal electrode, (7) be calcium chloride solution or sodium silicate solution, (8) be concrete fill, (9) are Miniature anti-slide pile, and (10) are inclinometer pipe.
The specific embodiment
Be described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.Protection scope of the present invention is not limited only to the description of present embodiment.
As depicted in figs. 1 and 2, during enforcement, inclinometer pipe 10 is set below sliding mass, the Real-Time Monitoring sliding mass is the change in displacement situation before improvement, in governance process and after administering, and plays guiding construction and estimates the effect of regulation effect; Inclinometer pipe 10 will pass through potential sliding zone 2 bottoms between sliding mass 1 and liptinite, and squeezes into basement rock 3, and distance boring 4 spacings are between 2-3 m.Determine potential landslide with 2 particular location and tendency according to the geologic prospect situation, according to designing requirement, determine the degree of depth of boring 4, boring 4 degree of depth will be passed through potential sliding zone 2-5 m, and squeeze into as far as possible basement rock 3; 4 spacings of holing are 2-6 times of bore diameter; Arrange respectively yin, yang metal electrode 5 and counter-rotating metal electrode 6 in respective bore, the metal electrode 0.2-0.3 m that bassets, it is the reinforcing bar of 15-25 mm that yin, yang metal electrode 5 and counter-rotating metal electrode 6 adopt diameters, length is 5-30m; Toward boring interior Implanted Silicon acid sodium solution and the calcium chloride solution 7 respectively at yin, yang electrode place, making both solution concentration ratios is 2:1, injects calcium chloride solution by the top in positive electrode place boring, makes the on-the-spot solution concentration of holing reach 15-20 % after adding; To the interior Implanted Silicon acid sodium solution of negative electrode place boring, make the on-the-spot solution concentration of boring reach 30-40 % by the top after adding; Connect direct current, begin chemical electric osmose and process reinforcing sliding zone soft layer, the interval certain hour connects the counter-rotating metal electrode, the transposing polarity of electrode, improve consolidation effect, when temperature of anode significantly raises or negative electrode place boring water yield when being zero, stop the chemical electroosmosis method construction, withdraw dc source; Toward the interior fluid concrete filler 8 of boring, form Miniature anti-slide pile 9, finally form whole landslide control system.
Claims (2)
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| CN2011101751644A CN102322067B (en) | 2011-06-27 | 2011-06-27 | Method for treating landslide projects through combining chemical electroosmosis method with micro anti-slide piles |
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| CN2011101751644A CN102322067B (en) | 2011-06-27 | 2011-06-27 | Method for treating landslide projects through combining chemical electroosmosis method with micro anti-slide piles |
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| CN102322067A CN102322067A (en) | 2012-01-18 |
| CN102322067B true CN102322067B (en) | 2013-05-08 |
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| CN102910938B (en) * | 2012-10-15 | 2015-04-08 | 河海大学 | Method of preparing dense concrete through silicate electromigration method |
| CN105421327B (en) * | 2015-12-11 | 2018-05-25 | 青岛理工大学 | Method for measuring anti-slip treatment parameters of high cutting slope |
| CN108150199B (en) * | 2017-12-01 | 2019-06-11 | 长安大学 | A method for improving the stability of temporary support in the construction of tunnel upper step CD method |
| CN109914386B (en) * | 2019-03-29 | 2020-08-11 | 温州大学 | Small-diameter plastic sleeve-metal sleeve precast pile, manufacturing method and application |
| CN109914443B (en) * | 2019-03-29 | 2020-07-31 | 温州大学 | A method of making an anti-slide pile and a construction method for using the anti-slide pile to prevent and control landslides |
| CN109914442B (en) * | 2019-03-29 | 2020-07-17 | 温州大学 | Integrative stake of electroosmosis drainage |
| CN110144908B (en) * | 2019-05-09 | 2024-03-22 | 中铁二院工程集团有限责任公司 | Construction method of deep grouting reinforcement landslide structure |
| CN111088807A (en) * | 2020-01-16 | 2020-05-01 | 天津城建大学 | Be applied to reinforced (rfd) electrode stake of rubble side slope prevention of seepage and bank protection system |
| CN111218944A (en) * | 2020-02-26 | 2020-06-02 | 中铁二院工程集团有限责任公司 | Landslide combined long and short anti-skidding reinforcing pile structure and design method |
| CN111894014B (en) * | 2020-07-30 | 2021-08-17 | 宁波市天莱园林建设工程有限公司 | Electroosmosis ecological slope protection maintenance method |
| CN113106989A (en) * | 2021-03-26 | 2021-07-13 | 中煤科工集团沈阳研究院有限公司 | Electrochemical reinforcing system and method for opencast coal mine slope |
| CN113106963A (en) * | 2021-03-26 | 2021-07-13 | 中煤科工集团沈阳研究院有限公司 | Electrochemical grouting treatment method for side slope based on pile forming effect |
| CN113418831B (en) * | 2021-06-30 | 2022-08-26 | 中国地质科学院水文地质环境地质研究所 | Resistivity tomography-based landslide revival simulation device and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660312A (en) * | 2009-09-11 | 2010-03-03 | 朱奎 | Reinforced cement mixing pile composite foundation treatment and construction method |
| CN101775814A (en) * | 2009-02-20 | 2010-07-14 | 上海强劲基础工程有限公司 | Anti-slip cement soil pile soil blocking structure and construction method thereof |
Family Cites Families (3)
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| JP2587949B2 (en) * | 1987-08-25 | 1997-03-05 | 山▲崎▼ 珍彦 | Manufacturing method of piles on site using electrochemical injection method |
| JPH1052917A (en) * | 1996-08-09 | 1998-02-24 | Sharp Corp | Static attraction type recording device |
| JPH1121871A (en) * | 1997-06-30 | 1999-01-26 | Taiyo Gijutsu Kaihatsu Kk | Electro-osmosis draining method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101775814A (en) * | 2009-02-20 | 2010-07-14 | 上海强劲基础工程有限公司 | Anti-slip cement soil pile soil blocking structure and construction method thereof |
| CN101660312A (en) * | 2009-09-11 | 2010-03-03 | 朱奎 | Reinforced cement mixing pile composite foundation treatment and construction method |
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