CN110241837A - A kind of construction method for preventing basement bottom board from cracking under high artesian geological conditions - Google Patents

A kind of construction method for preventing basement bottom board from cracking under high artesian geological conditions Download PDF

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Publication number
CN110241837A
CN110241837A CN201910607970.0A CN201910607970A CN110241837A CN 110241837 A CN110241837 A CN 110241837A CN 201910607970 A CN201910607970 A CN 201910607970A CN 110241837 A CN110241837 A CN 110241837A
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China
Prior art keywords
pressure
water
bottom board
basement bottom
slip casting
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CN201910607970.0A
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Chinese (zh)
Inventor
罗双
熊添祥
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China Construction Fourth Engineering Division Corp Ltd
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China Construction Fourth Engineering Division Corp Ltd
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Priority to CN201910607970.0A priority Critical patent/CN110241837A/en
Publication of CN110241837A publication Critical patent/CN110241837A/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E02D15/04Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/06Restraining of underground water
    • E02D19/12Restraining of underground water by damming or interrupting the passage of underground water
    • E02D19/16Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/10Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
    • E02D31/12Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure

Abstract

The invention discloses the construction methods for preventing basement bottom board from cracking under a kind of high artesian geological conditions, this method uses water mill drilling machine to generate crack and surface infiltration region on basement bottom board first and is drilled with peep hole, the hole depth of peep hole is more than basement bottom board thickness 300mm, the pitch of holes of peep hole is 3~4m, pressure-bearing water area is determined by peep hole, is flowed to, the amount of gushing and pressure condition, determines water-proofing treatment region according to each data cases.The present invention utilizes the construction technology of high-pressure slip-casting, mixing grouting material high pressure is filled to basic earth or rock mass, mixing grouting material can be permeated and be filled to basic earth or rock fissure direction under pressure, column is formed in pressure sphere of action consolidates system, that is, small shape steel tube curtain, to form effective water barrier together below bottom plate permeable areas, it cuts off artesian water directly to permeate the pressure influence of structure and erosion, effective solution high artesian region bottom slab crack leaks ineradicable problem.

Description

A kind of construction method for preventing basement bottom board from cracking under high artesian geological conditions
Technical field
The present invention relates to the construction methods for preventing basement bottom board from cracking under a kind of high artesian geological conditions, belong to building Basement construction technical field.
Background technique
Guangxi province is located in the Yunnan-Guizhou Plateau southeastern edge in Chinese topography second step, and Guangdong and Guangxi Provinces hills is western, borders on the north in the south Gulf sea, generally mountain and hill basin landforms, wherein karst landform accounts for the Guangxi gross area about 37.8%, growth category Mostly the world is rare.Because crack reaches full growth caused by its characteristic landforms, underground water is extremely abundant and artesian water is more, therefore is building Object bottom plate is mostly influenced by artesian water, according to our company in the multiple project statistics in osmanthus when bottom plate artesian water hydraulic pressure is in 30KPa-100Kpa Building upstream face bottom slab crack, leakage are easily caused, and then influences to use function and structure durability.
For the bottom slab crack under the conditions of 30KPa or more artesian water, leakage problems, if using traditional slip casting method processing, For mend under the long term of water pressure, crack meeting sustainable development forms water transport channel again, causes secondary seepage, it is difficult to protect Demonstrate,prove long-term water-stagnating effect.Although can ensure that ground drying reaches using effect for a long time using the way that ground adds hydrophobic layer, But there is a situation where to influence structure headroom and cost is excessively high, be unfavorable for promoting on a large scale.
Summary of the invention
The object of the present invention is to provide a kind of height simple and practical, easily operated, economic cost is low, plugging effect is good The construction method for preventing basement bottom board from cracking under artesian water geological conditions, to overcome deficiency in the prior art.
Technical solution of the present invention: the construction method for preventing basement bottom board from cracking under a kind of high artesian geological conditions, The following steps are included:
Step 1: generating crack and surface infiltration region on basement bottom board using water mill drilling machine is drilled with peep hole, see The hole depth for examining hole is more than basement bottom board thickness 300mm, and the pitch of holes of peep hole is 3~4m, determines artesian water by peep hole Region flows to, the amount of gushing and pressure condition, determines water-proofing treatment region according to each data cases;
Step 2: bore a circle injected hole along water-proofing treatment area peripheral edge using water mill drilling machine, the center of injected hole away from for Then 800mm installs steel pipe with holes in injected hole, and in the upper end grafting high-pressure rubber pipe of steel pipe with holes, using high-pressure slip-casting Machine is directed at high-pressure rubber pipe and carries out first time injecting treatment, and grouting pressure is not less than 15Mpa;It, can be at waterproof after the completion of slip casting It manages region and forms a closed small-sized water-stop curtain of circle, water pressure around can be held and surrounding water flow is truncated, it is straight to eliminate water pressure Connect the influence to sole plate;
Step 3: after small-sized water-stop curtain intensity reaches after a week, carrying out surface to the cracks on basement bottom board Closing, ties basement underplate concrete internal leak part and naked eyes visible crack using solidified type epoxy resin in water Structure reinforcement waterproof construction solves high artesian and acts on seepage problem caused by the blind crack generated inside lower basement bottom board.
In the above method, for the shearing strength for enhancing small-sized water-stop curtain, when first time slip casting intensity reaches 30%, then It is secondary that second of injecting treatment is carried out by high-pressure rubber pipe.
In the above method, the first time injecting treatment and second of injecting treatment are all made of mixing grouting material, described Mixing grouting material calculate by weight, it is by 50~60 parts of 42.5 portland cement, 3~7 parts of cement reinforcement agent part, rapid hardening It is formulated for 5~9 parts of solidified type epoxy resin in 2~5 parts of agent, 6~10 parts of sealing agent, 8~12 parts of cement binder and water.
In the above method, the structural strengthening waterproof construction the following steps are included:
(1) it punches: then being drilled using electric hammer along basement bottom board (1) surface crack two, make to drill through crack, but Basement bottom board (1) must not be punched, drilling runs through with crack and intersects depth≤1/2 basement bottom board (1) thickness, between drilling 20cm-60cm;
(2) slip casting: will keep slip casting machine pressure between 25~28MPa when slip casting, keep 8~10 after reaching authorized pressure Second;
(3) it buries slip casting syringe needle: slip casting syringe needle is installed in the hole being drilled, make around slip casting syringe needle between drilling without sky Gap, it is water-tight;
(4) it is in the milk: solidified type epoxy resin being perfused into grout hole by slip casting syringe needle using high-pressure grouting machine;Facade fills Slurry sequence is from bottom to top;Plane can be since one end, and single hole is carried out continuously, one by one after adjacent holes start pulp, keeps pressure Power 3-5 minutes, the grouting of this hole can be stopped, changing the adjacent grout hole of note;
(5) tear slip casting syringe needle open: grouting finishes, and confirmation grouting is closely knit can to remove or knock out exposed slip casting syringe needle, cleaning The grouting liquid that clean cured spill and leakage goes out;
(6) it seals: repairing and sealing treatment being carried out to grouting mouth with quick hardening cement.
It due to the adoption of the above technical scheme, will the present invention has the advantages that the present invention utilizes the construction technology of high-pressure slip-casting Mixing grouting material high pressure is filled to basic earth or rock mass, and mixing grouting material under pressure can be to basic earth or rock cranny Direction is permeated and is filled, and forms column in pressure sphere of action and consolidates system, that is, small shape steel tube curtain, to permeate in bottom plate Effective water barrier together is formed below region, cutting artesian water directly permeates the pressure influence of structure and erosion, effectively It solves high artesian region bottom slab crack and leaks ineradicable problem, while the anti-floating performance of structure can be increased.Meanwhile because of ground Lower artesian pressure and flow effect and grouting material solidify volume effect of contraction, and the leakiness of filling region easily occurs in grouting for the first time Region, therefore, the present invention make up the water-proofing treatment region of basement bottom board using secondary grouting, to thoroughly solve bottom Plate leakage problems.In addition, having larger frictional force after construction between bored concrete pile and rock stratum, soil layer, the anti-floating of bottom plate can be improved Ability solves bottom plate part On The Floating.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention;
Fig. 2 is middle-size and small-size water-stop curtain hole of the invention arrangement schematic diagram;
Fig. 3 is the middle-size and small-size water-stop curtain high-pressure slip-casting penetration range schematic diagram of the present invention;
Fig. 4 is small-sized water-stop curtain sectional schematic diagram.
Description of symbols: 1- lattice column, 2- concrete inner support beam, 3- are grounded zinc-plated band iron, 4- I-steel, 5- decorative pattern Steel plate, 6- protective fence, 7- limit for tonnage board.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and examples to this hair It is bright to be described in further detail.
The embodiment of the present invention: Fig. 1~4 are participated in, prevent basement bottom board from cracking under a kind of high artesian geological conditions Construction method, comprising the following steps:
Step 1: generating crack on basement bottom board 1 with the water drilling of Φ 80mm drill bit using LU-F1-3 type water mill drilling machine And surface infiltration region is drilled with peep hole 2, the hole depth of peep hole 2 is more than 1 thickness 300mm of basement bottom board, between the hole of peep hole 2 Away from for 4m, pressure-bearing water area is determined by peep hole 2, is flowed to, the amount of gushing and pressure condition, is determined at waterproof according to each data cases Manage region 4;
Step 2: boring a circle along 4 periphery of water-proofing treatment region with Φ 80mm hidden hole drilling using LU-F1-3 type water mill drilling machine Then steel pipe 5 with holes is installed, and in the upper of steel pipe 5 with holes away from for 800mm in injected hole 3, the center of injected hole 3 in injected hole 3 Grafting high-pressure rubber pipe 6 is held, steel pipe 5 with holes is connect with the junction of high-pressure rubber pipe 6 using connector sleeve, and will be under steel pipe 5 with holes End sealing, then by steel pipe 5 with holes binding in steel reinforcement cage, and together with steel reinforcement cage in sinking to injected hole 3;At this point, using High-pressure grout injector is directed at high-pressure rubber pipe 6 and carries out first time injecting treatment, and grouting pressure is not less than 15Mpa;After the completion of slip casting, A closed small-sized water-stop curtain of circle is formed in water-proofing treatment region 4, water pressure around can be held and surrounding water flow is truncated, eliminated Water pressure is directly to the influence of sole plate;When slip casting, the Grouting Pipe on injected hole 3 need to install pressure gauge, then by Grouting Pipe It is connect with high-pressure rubber pipe 6 into slip casting, slip casting initiation pressure is 0.5Mpa, is gradually pressurizeed, and final pressure is used in 2.0-4.0MPa, slip casting Mix grouting material, and the ratio of mud for mixing grouting material controls between 0.45~0.5, after slip casting wouldn't tube drawing, until cement slurry Until flowing out outside pipe, Grouting Pipe is extracted, sealed steel pipe end is pressurizeed several minutes, and outflow is outside steel pipe again to cement slurry Only.Standard is completed in slip casting: grouting pressure is stablized 3-5 minutes, and mud cement mortar is no longer sunk in hole, can terminate this hole slip casting.
Step 3: after small-sized water-stop curtain intensity reaches after a week, carrying out surface to the cracks on basement bottom board 1 Closing carries out 1 inside concrete leaky portion of basement bottom board and naked eyes visible crack using solidified type epoxy resin in water Structural strengthening waterproof construction solves infiltration caused by the blind crack generated inside basement bottom board under high artesian acts on and asks Topic.
In the above method, after first time slip casting, the volume that slurries have 1.4% or so during solidification is received Contracting leads under the conditions of high artesian leakiness under basement floor there are also being lost because of slurries.To enhance small-sized water-stop curtain Shearing strength, when first time slip casting intensity reaches 30%, again by high-pressure rubber pipe 6 carry out second of injecting treatment.The Secondary grouting after treatment cuts off high-pressure rubber pipe 6, and blocks injected hole with C40 coagulation scholar.
In the above method, the first time injecting treatment and second of injecting treatment are all made of mixing grouting material, described Mixing grouting material calculate by weight, it be by 55 parts of 42.5 portland cement, 5 parts of cement reinforcement agent part, 3 parts of accelerator, It is formulated for 7 parts of solidified type epoxy resin in 8 parts of sealing agent, 10 parts of cement binder and water.
In the above method, the structural strengthening waterproof construction the following steps are included:
(1) it punches: then being drilled using boring bar tools such as electric hammers along crack two, bit diameter 14mm, bore angle Preferably≤45 °, bit depth≤structural thickness 2/3, drilling has to pass through crack, but must not punch structure, drilling and crack Through intersection depth≤1/2 structural thickness, spacing of wells 40cm;
(2) slip casting: will keep slip casting machine pressure between 25MPa when slip casting, be kept for 8 seconds after reaching authorized pressure;
(3) it buries slip casting syringe needle: slip casting syringe needle is installed in the hole being drilled, band expanded rubber after slip casting syringe needle, and with dedicated Allen wrench is tightened, and the tight between drilling is made around slip casting syringe needle, water-tight;
(4) it is in the milk: solidified type epoxy resin being perfused into grout hole using high-pressure grouting machine;Facade grouting sequence is under Upwards;Plane can be since one end, and single hole is carried out continuously, one by one after adjacent holes start pulp, is kept for pressure 3 minutes Stop the grouting of this hole, changes the adjacent grout hole of note;
(5) tear slip casting syringe needle open: grouting finishes, and confirmation grouting is closely knit can to remove or knock out exposed slip casting syringe needle, cleaning The grouting liquid that clean cured spill and leakage goes out;
(6) it seals: repairing, sealing treatment with quick hardening cement to grouting mouth.
After the completion of structural strengthening waterproof construction, then carry out basal plane cleaning: cleaning basal plane ponding, mud are rushed with giant It washes, is dried up after doing bright water clearly with blower.
Observe basal plane situation: after standing 7 days, after basal plane is dry, whether there is or not leakage scenarios for investigation.Such as occur part seep water and When perforations adding.Such as ne-leakage situation, construction is finished.
In conclusion the present invention utilizes the construction technology of high-pressure slip-casting, will mixing grouting material high pressure fill to basic earth or Rock mass, mixing grouting material under pressure can permeate and fill to basic earth or rock fissure direction, act on model in pressure The interior formation column consolidation i.e. small shape steel tube curtain of system is enclosed, to form effective water proof together below bottom plate permeable areas Layer, cutting artesian water directly to the pressure influence of structure and corrode infiltration, and effective solution high artesian region bottom slab crack seeps Ineradicable problem is leaked, while the anti-floating performance of structure can be increased.Meanwhile because of underground bearing water pressure and flow effect and filling Slurry curing volume contraction influences, and grouting easily the leakiness region of filling region occurs for the first time, and therefore, the present invention is to basement bottom The water-proofing treatment region of plate is made up using secondary grouting, to thoroughly solve the problems, such as base plate leakage.In addition, after construction There is larger frictional force between bored concrete pile and rock stratum, soil layer, the anti-floating ability of bottom plate can be improved, solve bottom plate part On The Floating. Therefore, construction method of the invention be suitable for processing mud, muck soil, stream modeling, it is soft modeling or plastic cohesive soil, silt, sand, Middle Baiyun rock mantle geology under the conditions of loess, plain fill and gravelly soil and karst landform, and artesian water hydraulic pressure 30KPa with Upper basement bottom slab crack, the infiltration situation that floats or floor structure cause self waterproofing ability and entirety strong because of continuous many places cracking Degree reduces the case where not being able to satisfy normal usage function, has wide range of applications.

Claims (4)

1. the construction method for preventing basement bottom board from cracking under a kind of high artesian geological conditions, it is characterised in that including following step It is rapid:
Step 1: generating crack and surface infiltration region on basement bottom board (1) using water mill drilling machine is drilled with peep hole (2), The hole depth of peep hole (2) is more than basement bottom board (1) thickness 300mm, and the pitch of holes of peep hole (2) is 3~4m, passes through peep hole (2) it determines pressure-bearing water area, flow to, the amount of gushing and pressure condition, determine water-proofing treatment region (4) according to each data cases;
Step 2: boring circle injected hole (3), the center of injected hole (3) along water-proofing treatment region (4) periphery using water mill drilling machine Away from for 800mm, then steel pipe (5) with holes is installed in injected hole (3), and in the upper end grafting high-pressure rubber pipe of steel pipe with holes (5) (6), first time injecting treatment is carried out using high-pressure grout injector alignment high-pressure rubber pipe (6), grouting pressure is not less than 15Mpa;Slip casting After the completion, a closed small-sized water-stop curtain of circle can be formed in water-proofing treatment region (4), water pressure around can be held and be truncated Surrounding water flow eliminates water pressure directly to the influence of sole plate;
Step 3: after small-sized water-stop curtain intensity reaches after a week, carrying out surface envelope to the cracks on basement bottom board (1) It closes, basement bottom board (1) inside concrete leaky portion and naked eyes visible crack is carried out using solidified type epoxy resin in water Structural strengthening waterproof construction solves infiltration caused by the blind crack generated inside basement bottom board under high artesian acts on and asks Topic.
2. the construction method for preventing basement bottom board from cracking under high artesian geological conditions according to claim 1, special Sign is: for the shearing strength for enhancing small-sized water-stop curtain, when first time slip casting intensity reaches 30%, again by high-pressure glue It manages (6) and carries out second of injecting treatment.
3. the construction method for preventing basement bottom board from cracking under high artesian geological conditions according to claim 1 or 2, Be characterized in that: the first time injecting treatment and second of injecting treatment is all made of mixing grouting material, the mixing grouting Material calculate by weight, it be by 50~60 parts of 42.5 portland cement, 3~7 parts of cement reinforcement agent part, 2~5 parts of accelerator, It is formulated for 5~9 parts of solidified type epoxy resin in 6~10 parts of sealing agent, 8~12 parts of cement binder and water.
4. the construction method for preventing basement bottom board from cracking under high artesian geological conditions according to claim 1, special Sign is: the structural strengthening waterproof construction the following steps are included:
(1) it punches: then being drilled using electric hammer along basement bottom board (1) surface crack two, make to drill through crack, but must not Basement bottom board (1) is punched, drilling runs through with crack and intersects depth≤1/2 basement bottom board (1) thickness, between drilling 20cm-60cm;
(2) slip casting: will keep slip casting machine pressure between 25~28MPa when slip casting, be kept for 8~10 seconds after reaching authorized pressure;
(3) it buries slip casting syringe needle: slip casting syringe needle is installed in the hole being drilled, make around slip casting syringe needle the tight between drilling, no Leak;
(4) it is in the milk: solidified type epoxy resin being perfused into grout hole by slip casting syringe needle using high-pressure grouting machine;Facade grouting is suitable Sequence is from bottom to top;Plane can be since one end, and single hole is carried out continuously, one by one after adjacent holes start pulp, keeps pressure 3-5 Minute, the grouting of this hole can be stopped, changing the adjacent grout hole of note;
(5) tear slip casting syringe needle open: grouting finishes, and confirmation grouting is closely knit can to remove or knock out exposed slip casting syringe needle, cleans out The grouting liquid that cured spill and leakage goes out;
(6) it seals: repairing and sealing treatment being carried out to grouting mouth with quick hardening cement.
CN201910607970.0A 2019-07-08 2019-07-08 A kind of construction method for preventing basement bottom board from cracking under high artesian geological conditions Pending CN110241837A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110607921A (en) * 2019-09-23 2019-12-24 周伟 Automatic repairing leakage stoppage treatment method and waterproof leakage stoppage structure
CN114426425A (en) * 2021-12-27 2022-05-03 河南中煤矿业科技发展有限公司 Double-liquid rapid-hardening grouting reinforcement inorganic material and construction process
CN115233742A (en) * 2022-08-02 2022-10-25 中铁十四局集团有限公司 Construction method for preventing seepage and stopping leakage by multiple composite seepage in deep, medium and shallow

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CN103113841A (en) * 2012-12-07 2013-05-22 北京航天试验技术研究所 Preparation method of strong-acid-resistant epoxy resin quick plugging agent
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CN109537925A (en) * 2018-11-18 2019-03-29 大连高马文化产业发展有限公司 Basement bottom board crack restorative procedure
CN109779287A (en) * 2019-03-06 2019-05-21 青岛海川建设集团有限公司 Microdilatancy water-proof emulsion construction technology
CN109853633A (en) * 2018-12-29 2019-06-07 中建四局第六建筑工程有限公司 A kind of external sealing treatment process of basement bottom board leakage

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CN103113841A (en) * 2012-12-07 2013-05-22 北京航天试验技术研究所 Preparation method of strong-acid-resistant epoxy resin quick plugging agent
CN104234090A (en) * 2014-09-04 2014-12-24 江苏南通三建集团有限公司 Method for treating crack water seepage of concrete floor and wall body
CN107201753A (en) * 2017-06-16 2017-09-26 潍坊学院 It is a kind of to be used for the high-pressure slip-casting blocking method of basement or top plate of underground parking garage
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CN109537925A (en) * 2018-11-18 2019-03-29 大连高马文化产业发展有限公司 Basement bottom board crack restorative procedure
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110607921A (en) * 2019-09-23 2019-12-24 周伟 Automatic repairing leakage stoppage treatment method and waterproof leakage stoppage structure
CN114426425A (en) * 2021-12-27 2022-05-03 河南中煤矿业科技发展有限公司 Double-liquid rapid-hardening grouting reinforcement inorganic material and construction process
CN115233742A (en) * 2022-08-02 2022-10-25 中铁十四局集团有限公司 Construction method for preventing seepage and stopping leakage by multiple composite seepage in deep, medium and shallow
CN115233742B (en) * 2022-08-02 2023-11-03 中铁十四局集团有限公司 Deep-middle-shallow multiple composite seepage-proofing and leakage-stopping construction method

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