CN102733366B - Soft soil curing construction method - Google Patents
Soft soil curing construction method Download PDFInfo
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- CN102733366B CN102733366B CN201210234675.3A CN201210234675A CN102733366B CN 102733366 B CN102733366 B CN 102733366B CN 201210234675 A CN201210234675 A CN 201210234675A CN 102733366 B CN102733366 B CN 102733366B
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Abstract
The invention discloses a soft soil curing construction method, comprising the following steps: braking and discharging water on soil surface; sinking by dewatering and draining; preparing dry fixing agents; planting into dry fixing agents; spraying foaming agents, detecting and so on. The soft soil curing construction method provided by the invention has the advantages of convenience in construction, high construction efficiency and good work effects, and a soil structure with low water content, strong degree of density and high bearing force is formed by the method, so that former soft weak soils qualitatively change.
Description
Technical field
The present invention relates to a kind of weak soil and solidify construction method.
Background technology
In recent years, country and Jiangsu Province rise to strategic height coastal economy development, pay much attention to coastal economy development problem, and take series of measures to advance coastal economy development, and China coastline is long, be the longest country in coastline in the world, Jiangsu is in You10Duo Ge counties and cities, riverbank, the Yellow River near seashore, thereby coastal economy development potentiality is very large.But because coastal soil property is alluvial deposit, quality is soft, water content is high, modulus in compression coefficient is large, density is poor, low bearing capacity, this to building engineering, highway engineering construction difficulty is large, cost is high, has restricted coastal economy development.
Summary of the invention
The object of the present invention is to provide a kind of easy construction, the weak soil of good working effect solidifies construction method.
Technical solution of the present invention is:
A kind of weak soil solidifies construction method, it is characterized in that: comprising:
(1) soil table is stopped and is determined draining: according to test report, soil moisture content >=50 o'clock, dispense alum at soil property shallow-layer, and every 100 ㎡ charity 1.2kg alum carry out mix with every 1.2kg alum and 100kg yellow ground when charity even, then adopt artificial charity; Before charity, take 1000 ㎡ regions as one is got a little, the pool of drawing water is set, hand excavation draws water after 48 hours when charity river sulfur acid aluminium potassium.Reduce soil layer moisture content by drawing water;
(2) draining falls in open caisson: through soil table stop determine drainage procedure after or while confirming soil 35%≤moisture content≤50% by test, adopt deep-well precipitation water discharge method to carry out that well point layout, well bucket are made, well bucket is installed, the program of drawing water; Well point is arranged as a well point is set in every 50 ㎡, well bucket designs according to proposed building ground level planned well bucket height, the half that well bucket height is depth of building, well bucket is cylinder, well internal diameter Ф >=1m, and well bucket adopts common brick to make, gap mortar-chalked joint, jointing mortar is pressed sand and cement proportion 3:1 configuration, and sand is medium coarse sand, and cement is 325 ordinary Portland cements; Well bucket is installed and is adopted within mechanicalness mounting shaft casing enters steel drum, then squeezes in soil along thin wall tubular pile machine with vibration, then holds together out steel drum, and so bucket is rear with the draining of drawing water of sunk water pump, and soil moisture in layer is down to below 20%;
(3) solidating agent configuration: carrying out deep-well while falling row, simultaneously carry out the configuration of weak soil solidating agent; Weak soil solidating agent is made up of cement, the sand of 30-60%, the lime of 0-40%, the flyash of 0-40%, the slag of 0-20%, the gypsum of 0-8%, the 0-5% smalls silicon-base oxide of 30-40%, and various materials are stirred;
(4) implant solidating agent: adopt dry spray method to implant, promote powder spraying stirring, the demand height of rising to bores again, rises to demand absolute altitude and shuts down, then carry out in this order second group of implantation.Implantation depth is 50% of depth of building, and diameter is 50cm; Implantation spacing is 1.8m;
(5) spray polyurethane foams: spray with spraying infusion air gun, spraying the degree of depth is 50% of depth of building, and spraying spacing is 1.8m;
(6) expire 25 days when above operation completes, detect, then enter construction-engineering project construction sequence.
Particle diameter >=the 1mm of described alum.
Easy construction of the present invention, efficiency of construction is high, and good working effect, by this technical finesse, forms the soil structures that water content is low, compactness is strong, bearing capacity is high, makes former weak soil that the variation of matter occur.
Below in conjunction with embodiment, the invention will be further described.
The specific embodiment
Embodiment 1:
A kind of weak soil solidifies construction method, comprising:
(1) soil table is stopped and is determined draining: according to test report, soil moisture content >=50 o'clock, dispense alum at soil property shallow-layer (the soil property degree of depth 20 ~ 50cm position), every 100 ㎡ charity 1.2kg alum, when charity, carry out mix with every 1.2kg alum and 100kg yellow ground even, then adopt artificial charity; Before charity, take 1000 ㎡ regions as one is got a little, the pool of drawing water is set, hand excavation draws water after 48 hours when charity river sulfur acid aluminium potassium.Reduce soil layer moisture content by drawing water;
(2) draining falls in open caisson: through soil table stop determine drainage procedure after or while confirming soil 35%≤moisture content≤50% by test, adopt deep-well precipitation water discharge method to carry out that well point layout, well bucket are made, well bucket is installed, the program of drawing water; Well point is arranged as a well point is set in every 50 ㎡, well bucket designs according to proposed building ground level planned well bucket height, the half that well bucket height is depth of building, well bucket is cylinder, well internal diameter Ф >=1m, and well bucket adopts common brick to make, gap mortar-chalked joint, jointing mortar is pressed sand and cement proportion 3:1 configuration, and sand is medium coarse sand, and cement is 325 ordinary Portland cements; Well bucket is installed and is adopted within mechanicalness mounting shaft casing enters steel drum, then squeezes in soil along thin wall tubular pile machine with vibration, then holds together out steel drum, and so bucket is rear with the draining of drawing water of sunk water pump, and soil moisture in layer is down to below 20%;
(3) solidating agent configuration: carrying out deep-well while falling row, simultaneously carry out the configuration of weak soil solidating agent; Weak soil solidating agent is made up of 30% cement, 40% sand, 10% lime, 10% flyash, 5% slag, 3% gypsum, 2% smalls silicon-base oxide, and various materials are stirred;
(4) implant solidating agent: adopt dry spray method to implant, promote powder spraying stirring, the demand height of rising to bores again, rises to demand absolute altitude and shuts down, then carry out in this order second group of implantation.Implantation depth is 50% of depth of building, and diameter is 50cm; Implantation spacing is 1.8m;
(5) spray polyurethane foams: spray with spraying infusion air gun, spraying the degree of depth is 50% of depth of building, and spraying spacing is 1.8m;
(6) expire 25 days when above operation completes, detect, then enter construction-engineering project construction sequence.
Particle diameter >=the 1mm of described alum.
Embodiment 2:
Weak soil solidating agent is made up of 40% cement, 50% sand, 5% lime, 2% flyash, 1% slag, 1% gypsum, 1% smalls silicon-base oxide.All the other are with embodiment 1.
Embodiment 3:
Weak soil solidating agent is made up of 35% cement, 55% sand, 0% lime, 0% flyash, 5% slag, 1% gypsum, 4% smalls silicon-base oxide.All the other are with embodiment 1.
Embodiment 4:
Weak soil solidating agent is made up of 30% cement, 30% sand, 20% lime, 20% flyash.All the other are with embodiment 1.
Claims (2)
1. weak soil solidifies a construction method, it is characterized in that: comprising:
(1) soil table is stopped and is determined draining: according to test report, when soil moisture content>=50%, dispense alum at soil property shallow-layer, every 100m
2charity 1.2kg alum, carries out mix with every 1.2kg alum and 100kg yellow ground when charity even, then adopts artificial charity; Before charity with 1000m
2region is one gets a little, and the pool of drawing water is set, and hand excavation, when charity river sulfur acid aluminium potassium drew water after 48 hours; Reduce soil layer moisture content by drawing water;
(2) draining falls in open caisson: through soil table stop determine drainage procedure after or while confirming soil 35%≤moisture content≤50% by test, adopt deep-well precipitation water discharge method to carry out that well point layout, well bucket are made, well bucket is installed, the program of drawing water; Well point is arranged as every 50m
2a well point is inside set, well bucket designs according to proposed building ground level planned well bucket height, the half that well bucket height is depth of building, well bucket is cylinder, well internal diameter Ф>=1m, and well bucket adopts common brick to make, gap mortar-chalked joint, jointing mortar is pressed sand and cement proportion 3:1 configuration, and sand is medium coarse sand, and cement is 325 ordinary Portland cements; Well bucket is installed and is adopted within mechanicalness mounting shaft casing enters steel drum, then squeezes in soil along thin wall tubular pile machine with vibrating, and then holds together out steel drum, then, with the draining of drawing water of sunk water pump, soil moisture in layer is down to below 20%;
(3) solidating agent configuration: carrying out deep-well while falling row, simultaneously carry out the configuration of weak soil solidating agent; Weak soil solidating agent is made up of cement, the sand of 30-60%, the lime of 0-40%, the flyash of 0-40%, the slag of 0-20%, the gypsum of 0-8%, the 0-5% smalls silicon-base oxide of 30-40%, and various materials are stirred;
(4) implant solidating agent: adopt dry spray method to implant, promote powder spraying stirring, the demand height of rising to bores again, rises to demand absolute altitude and shuts down, then carry out in this order second group of implantation; Implantation depth is 50% of depth of building, and diameter is 50cm; Implantation spacing is 1.8m;
(5) spray polyurethane foams: spray with spraying infusion air gun, spraying the degree of depth is 50% of depth of building, and spraying spacing is 1.8m;
(6) expire 25 days when above operation completes, detect, then enter construction-engineering project construction sequence.
2. weak soil according to claim 1 solidifies construction method, it is characterized in that: the particle diameter >=1mm of described alum.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210234675.3A CN102733366B (en) | 2012-07-09 | 2012-07-09 | Soft soil curing construction method |
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| CN201210234675.3A CN102733366B (en) | 2012-07-09 | 2012-07-09 | Soft soil curing construction method |
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| CN102733366B true CN102733366B (en) | 2014-06-04 |
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| CN103992799B (en) * | 2013-09-06 | 2017-10-10 | 宁波万土环保科技有限公司 | Ooze curing agent and its production method |
| CN105780764A (en) * | 2016-03-30 | 2016-07-20 | 东南大学 | Light cemented soil composite mixing pile |
| CN108729436A (en) * | 2017-04-19 | 2018-11-02 | 连云港港口工程设计研究院有限公司 | A kind of quick consolidation method suitable for silt soft foundation |
| CN108221529A (en) * | 2018-01-15 | 2018-06-29 | 赤峰诚联市政工程有限责任公司 | Urban road mud base squeezes curing construction method |
| CN108330950A (en) * | 2018-02-08 | 2018-07-27 | 沙焕焕 | In-situ soil is modified the method for manufacturing artificial mud stone |
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| JP4066340B2 (en) * | 2002-12-16 | 2008-03-26 | 鹿島建設株式会社 | Ground improvement method |
| CN101215141B (en) * | 2008-01-02 | 2010-06-16 | 邓亚光 | Soft soil curing agent |
| KR20120001856A (en) * | 2010-06-30 | 2012-01-05 | 어영자 | Method for reinforcing soft ground using geosynthetics and open channel |
| CN101949148A (en) * | 2010-09-25 | 2011-01-19 | 中国十九冶集团有限公司武汉分公司 | Method for constructing artificial dug pile at reduced well point ground water level |
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Denomination of invention: Soft soil solidification construction method Effective date of registration: 20220427 Granted publication date: 20140604 Pledgee: China Construction Bank Corporation Rudong sub branch Pledgor: JIANGSU SHUNTONG CONSTRUCTION GROUP Co.,Ltd. Registration number: Y2022980004919 |
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