CN109469086A - A kind of Collapsible Loess District pump house ground Simple treatment method - Google Patents

A kind of Collapsible Loess District pump house ground Simple treatment method Download PDF

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Publication number
CN109469086A
CN109469086A CN201811334781.2A CN201811334781A CN109469086A CN 109469086 A CN109469086 A CN 109469086A CN 201811334781 A CN201811334781 A CN 201811334781A CN 109469086 A CN109469086 A CN 109469086A
Authority
CN
China
Prior art keywords
pump house
basis
stake
soil
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811334781.2A
Other languages
Chinese (zh)
Inventor
魏长吉
朱坤
黄超
许祖伟
任立昌
谢昕翰
张文洪
陈忠辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum Chemical Co Linfen Coalbed Methane Branch
Original Assignee
China Petroleum Chemical Co Linfen Coalbed Methane Branch
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Petroleum Chemical Co Linfen Coalbed Methane Branch filed Critical China Petroleum Chemical Co Linfen Coalbed Methane Branch
Priority to CN201811334781.2A priority Critical patent/CN109469086A/en
Publication of CN109469086A publication Critical patent/CN109469086A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/10Deep foundations
    • E02D27/12Pile foundations
    • E02D27/16Foundations formed of separate piles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/44Foundations for machines, engines or ordnance
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02Improving by compacting
    • E02D3/08Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0004Synthetics
    • E02D2300/0018Cement used as binder
    • E02D2300/002Concrete

Abstract

The invention discloses a kind of Collapsible Loess District pump house ground Simple treatment methods, comprising the following steps: digs foundation pit, lime-soil compaction pile of constructing, does blinding layer and pour basis, be backfilling and compacted;It constructs in foundation pit lime-soil compaction pile, blinding layer is made in an area top, then does basis on blinding layer, and be backfilling and compacted process point three: backfill element soil is simultaneously tamped, backfill grey soil layer and compacting and does concrete hardening layer;By the present invention in that under the premise of meeting facility in carrying pump house, and then Compaction variables Canal in Loess Area is influenced caused by facility above ground after moisture intrusion with this pump house method for processing foundation.

Description

A kind of Collapsible Loess District pump house ground Simple treatment method
Technical field
The invention belongs to engineering construction fields, and in particular to a kind of Collapsible Loess District pump house ground simply and easy treat side Method.
Background technique
There are capillary porosity between collapsible loess particle, particle is cemented together by capillary tension.In capillary porosity It is suspended with loess little particle, capillary water meniscus can shrink back between particle when moisture evaporation is summarized in gap, in loess particle Surrounding generates flocculation, to particle with supporting role.But when water enters in soil, attachment force is greatly reduced, and rest can also divide It dissipates, connection effect is obviously reduced between loess particle, generates saturated yielding effect.
Collapsible loess belongs to the clayed soil of weak connection, the intensity with higher when water content is lower, rushes in rainwater Soil erosion is easily caused under the conditions of brush, permeability is very poor, and rainwater, which is difficult to penetrate under soil layer, to be accumulated, even if lesser rainfall Biggish erosion disaster can also be formed.Loess has very strong power wall and water imbibition in the dry state.
Due to Collapsible Loess District severe water and soil erosion, after rainwater or surface water intrusion loess formation, pipeline, equipment are corroded It bankets around basic, causes erosion, pipeline hanging.If there is " run, drip, leak " phenomenon in pump house process flow, it is easy to Jeopardize equipment and pipeline safety.Coal bed gas production belongs to inexpensive exploitation in itself, to meet production requirement, and reduces and is produced into This, it is necessary to form the Collapsible Loess District pump house ground Simple treatment method of complete set.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of Collapsible Loess District pump house ground simply and easy treat sides Method.
The technical solution of the present invention is as follows: a kind of Collapsible Loess District pump house ground Simple treatment method, specifically includes Following steps:
S101, it digs foundation pit: digging foundation pit in pump house region, foundation pit is dug to hardening terrace absolute altitude in pump house region 1.7 rice.
S102, construction lime-soil compaction pile: due to becoming when the soil of Collapsible Loess District is invaded by rainwater or surface water It is not hard enough, it dies down to the enabling capabilities of top building, beats after compacted stake holes and backfill dirt in stake holes and tamp, dirt squeezes Close stake and inter-pile soil collectively constitute composite foundation to bear upper load.It drives piles to hardening lower 1.7 meters of terrace absolute altitude in pump house Dirt is backfilled behind hole;1.2 meters of stake holes depth, stake diameter 10cm.It is 30cm, the stake of non-basic region that stake stake spacing is passed through in Equipment Foundations region Spacing is 45cm.
S103, do blinding layer and pour basis: the heat exchange tank in pump house is the equipment of heavier-weight, and recycles Pump, water return tank lighter in weight;When basic top device is heat exchange tank: being put with the heat exchange tank foundation bottom design size Big 200mm does the C25 concrete cushion of high 500mm, then marks by the whole heat exchange tank basis to the original of pouring of design drawing formwork erection It is high;Concrete cushion can protect the heat exchange tank basis of top, and play levelling, isolation and transitional function;On the basis of heat exchange tank Part is cylindrical body, and the following are cubes for hardening terrace absolute altitude, not only the installation of heat exchange tank can be facilitated to fix in this way, but also can be improved Stability in the hardening following heat exchange tank basis of terrace absolute altitude;When basic top device is circulating pump, return water tank base: It is described pour circulating pump, return water tank base takes turns doing 30cm thickness 3:7 cushion lime and 20cm thickness C15 concrete cushion, and do ash Soil padding layered is tamped and does compactness inspection;Circulating pump, return water tank base to original are poured described in pouring again by original image paper formwork erection is whole Absolute altitude.The 3:7 cushion lime and C15 concrete cushion can protect top circulating pump, return water tank base, and rise it is levelling, Isolation and transitional function.
S104, be backfilling and compacted: pump house Equipment Foundations are with exterior domain: the position -40cm under terrace is extremely hardened with plain earthen backfill, Compaction in layers simultaneously does compactness inspection, is laid with geotextiles after qualified;Then it is backfilled to the position -10cm under terrace with 3:7 dirt, point Layer is tamped and does compactness inspection;C25 concrete hardening is done after qualification to original place level ground absolute altitude.
In pump house foundation treatment engineering, one layer is in addition laid under 30cm ash soil layer under all bases, gutter, pipe trench Geotextiles;Geotextiles can enhance the tensile strength and non-deformability of the soil body, can also form drainage channel in inside soil body, will Surplus liquid and gas discharging in soil structures.
The invention has the advantages that foundation pit, which beats lime-soil compaction pile, enhances foundation capability, and foundation soil can be eliminated Collapsibility, by being effectively protected basis to the specially treated backfilled around blinding layer and basis, and then guarantee pump house The stable operation of interior equipment, Compaction variables Canal in Loess Area are influenced caused by facility above ground after moisture intrusion.
Detailed description of the invention
Fig. 1 is implementation steps schematic diagram of the invention.
Fig. 2 is lime-soil compaction pile schematic diagram.
Fig. 3 is the construction schematic diagram that basis is heat exchange tank.
Fig. 4 is the construction schematic diagram that basis is circulating pump, return water tank base.
In figure: 1, lime-soil compaction pile;2,3:7 cushion lime;3, C15 concrete cushion;4, circulating pump, water return tank base are poured Plinth;5, element soil;6,3:7 dirt;7, C25 concrete;8, C25 concrete cushion;9, heat exchange tank basis.
Specific embodiment
The contents of the present invention are further elaborated below with reference to specific embodiment, but embodiment is only of the invention Better embodiment, therefore all equivalence changes done according to feature described in present patent application range and principle, are included in Within the scope of present patent application.
Construction processing is carried out to a pump house ground in Collapsible Loess District, processing method divides following steps:
S101, foundation pit is dug in pump house region, foundation pit is dug to lower 1.7 meters of terrace absolute altitude of hardening in pump house region.
S102, construction lime-soil compaction pile.If Fig. 3 is to dirt is backfilled after the pile hole of bottom of foundation ditch region, lime-soil compaction is formed Stake 1;1.2 meters of stake holes depth, stake diameter 10cm.If Fig. 2 stake holes is laid by equilateral triangle, Equipment Foundations area pilespacing is 30cm, non- Base area pilespacing is 45cm.
S103, it does blinding layer and pours basis.If the basis Fig. 4 top device is heat exchange tank: with the heat exchange tank Basic 9 bottom design sizes amplify 200mm, do the C25 concrete cushion 8 of high 500mm, then by design drawing formwork erection it is whole pour it is described Heat exchange tank basis 9 is to former absolute altitude;9 tops of heat exchange tank basis are divided into cylindrical body, hardening terrace absolute altitude the following are cube, this Sample not only can facilitate the installation of heat exchange tank to fix, but also the stabilization in the hardening following heat exchange tank basis 9 of terrace absolute altitude can be improved Property;If the basis Fig. 3 top device is circulating pump, water return tank: pouring circulating pump, return water tank base 4 takes turns doing 30cm thickness 3:7 dirt pad Layer 2 and 20cm thickness C15 concrete cushion 3, and do 2 layered of cushion lime and tamp and do compactness inspection;Original image paper is pressed again Formwork erection is whole to be poured and described pours circulating pump, return water tank base 4 to former absolute altitude.
S104, it is backfilling and compacted.If Fig. 3 pump house Equipment Foundations are with exterior domain: be backfilled under hardening terrace with plain soil 5- The position 40cm, compaction in layers simultaneously do compactness inspection, are laid with geotextiles after qualified;Then be backfilled under terrace with 3:7 dirt 6- The position 10cm, compaction in layers simultaneously do compactness inspection;C25 concrete seven is done after qualification is hardened to original place level ground absolute altitude.
In pump house foundation treatment engineering, one layer is in addition laid under 30cm ash soil layer under all bases, gutter, pipe trench Geotextiles;
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not limited to this hair It is bright, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still It is possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equally replaced It changes.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention Protection scope within.

Claims (3)

1. a kind of Collapsible Loess District pump house ground Simple treatment method, it is characterised in that include the following steps:
S101, it digs foundation pit: digging foundation pit in pump house region, foundation pit is dug to hardening terrace absolute altitude in pump house region 1.7 rice;
S102, construction lime-soil compaction pile: it beats after compacted stake holes and backfills dirt in stake holes and tamp;1.2 meters of a depth are passed through, stake diameter 10cm;
S103, it does blinding layer and pours basis: (1) when basic top device is heat exchange tank: with the heat exchange tank basis Bottom design size amplifies 200mm, does the C25 concrete cushion of high 500mm, then pour the heat exchange by design drawing formwork erection is whole Tank base is to former absolute altitude;(2) when basic top device is circulating pump, return water tank base: it is described pour circulating pump, return water tank base according to It is secondary to do 30cm thickness 3:7 cushion lime and 20cm thickness C15 concrete cushion, and do cushion lime layered and tamp and do compactness Detection;Circulating pump, return water tank base to former absolute altitude are poured described in pouring again by original image paper formwork erection is whole;
S104, be backfilling and compacted: pump house Equipment Foundations are with exterior domain: with the position -40cm, layering under plain earthen backfill to hardening terrace Compactness inspection is tamped and done, is laid with geotextiles after qualified;Then it is backfilled to the position -10cm under terrace with 3:7 dirt, layering is rammed Reality simultaneously does compactness inspection;C25 concrete hardening is done after qualification to original place level ground absolute altitude.
2. pump house ground Simple treatment method in Collapsible Loess District according to claim 1, it is characterised in that: equipment It is 30cm that base area, which passes through stake stake spacing, and non-basic region stake spacing is 45cm.
3. pump house ground Simple treatment method in Collapsible Loess District according to claim 1, it is characterised in that: all In addition one layer of geotextiles are laid under basis, gutter, pipe trench under 30cm ash soil layer.
CN201811334781.2A 2018-11-10 2018-11-10 A kind of Collapsible Loess District pump house ground Simple treatment method Pending CN109469086A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811334781.2A CN109469086A (en) 2018-11-10 2018-11-10 A kind of Collapsible Loess District pump house ground Simple treatment method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811334781.2A CN109469086A (en) 2018-11-10 2018-11-10 A kind of Collapsible Loess District pump house ground Simple treatment method

Publications (1)

Publication Number Publication Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111608195A (en) * 2020-06-01 2020-09-01 中国二十冶集团有限公司 Construction method for foundation of frame-structured water pump house

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101255687A (en) * 2008-04-11 2008-09-03 河南红旗渠建设集团有限公司 Method for processing steady hydraulic permeability concrete basal layer soil body
CN101597897A (en) * 2008-06-06 2009-12-09 贵阳铝镁设计研究院 A kind of secondary treatment method of Collapsible Loess District ground and composite foundation structure
CN202380454U (en) * 2011-12-13 2012-08-15 河南省电力勘测设计院 Combined treating collapsible loess foundation of factory building by adopting plain concrete pile and branch filling pile
CN106088684A (en) * 2016-08-08 2016-11-09 陕西昊然海绵城市建设技术有限公司 The sunk type square of a kind of rainwater-collecting recycling and construction method thereof
CN106320313A (en) * 2016-08-19 2017-01-11 西北大学 Composite reinforced loess foundation and construction method thereof
CN207934028U (en) * 2018-01-30 2018-10-02 中信建筑设计研究总院有限公司 The foundation structure of serious Collapsible Loess District basement process
CN108661039A (en) * 2018-04-28 2018-10-16 中交航局第工程有限公司 A kind for the treatment of process of large caterpillar operation platform ground

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101255687A (en) * 2008-04-11 2008-09-03 河南红旗渠建设集团有限公司 Method for processing steady hydraulic permeability concrete basal layer soil body
CN101597897A (en) * 2008-06-06 2009-12-09 贵阳铝镁设计研究院 A kind of secondary treatment method of Collapsible Loess District ground and composite foundation structure
CN202380454U (en) * 2011-12-13 2012-08-15 河南省电力勘测设计院 Combined treating collapsible loess foundation of factory building by adopting plain concrete pile and branch filling pile
CN106088684A (en) * 2016-08-08 2016-11-09 陕西昊然海绵城市建设技术有限公司 The sunk type square of a kind of rainwater-collecting recycling and construction method thereof
CN106320313A (en) * 2016-08-19 2017-01-11 西北大学 Composite reinforced loess foundation and construction method thereof
CN207934028U (en) * 2018-01-30 2018-10-02 中信建筑设计研究总院有限公司 The foundation structure of serious Collapsible Loess District basement process
CN108661039A (en) * 2018-04-28 2018-10-16 中交航局第工程有限公司 A kind for the treatment of process of large caterpillar operation platform ground

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111608195A (en) * 2020-06-01 2020-09-01 中国二十冶集团有限公司 Construction method for foundation of frame-structured water pump house

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Application publication date: 20190315