CN108356069A - Polluted Soil stir in situ uniformity computational discrimination method - Google Patents

Polluted Soil stir in situ uniformity computational discrimination method Download PDF

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Publication number
CN108356069A
CN108356069A CN201810088773.8A CN201810088773A CN108356069A CN 108356069 A CN108356069 A CN 108356069A CN 201810088773 A CN201810088773 A CN 201810088773A CN 108356069 A CN108356069 A CN 108356069A
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China
Prior art keywords
situ
soil
stir
uniformity
depth direction
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Pending
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CN201810088773.8A
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Chinese (zh)
Inventor
王蓉
张亚娇
宋晓光
李韬
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Shanghai Geotechnical Investigations and Design Institute Co Ltd
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Shanghai Geotechnical Investigations and Design Institute Co Ltd
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Priority to CN201810088773.8A priority Critical patent/CN108356069A/en
Publication of CN108356069A publication Critical patent/CN108356069A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C1/00Reclamation of contaminated soil
    • B09C1/08Reclamation of contaminated soil chemically
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C2101/00In situ

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  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a kind of Polluted Soil stir in situ uniformity computational discrimination methods, it is characterised in that the computational discrimination method includes the following steps:Test obtains the pH value and moisture content of soil sample at each sampled point in the groups of samples being located in same depth plane, if variance≤0.5 PH and moisture content variance≤0.02 of each sampled point soil sample in the same groups of samples, show that soil body stir in situ is uniform in the depth plane where the groups of samples.It is an advantage of the invention that:The index system judged using pH value, moisture content, specific penetration resistance P S as Polluted Soil stir in situ uniformity, to realize the quick judgement of the uniformity in the plane and on depth direction to stir in situ.

Description

Polluted Soil stir in situ uniformity computational discrimination method
Technical field
The invention belongs to field of environment engineering technology, and in particular to a kind of Polluted Soil stir in situ uniformity computational discrimination side Method.
Background technology
With the industrialized fast development in China, soil environment is constantly endangered by various pollutions, meanwhile, contaminated soil The demand of repairing and treating will be increasing.Original position can be divided into according to disposal site for the repairing and treating technology of pollution soil sample at present It repairs and showering, based technique for in-situ remediation is just becoming the following recovery technique and selecting because at low cost, consume energy small, non-secondary pollution Hot spot.In situ remediation technology mainly has heat treatment, chemical oxidization method, multiphase extracting, bioanalysis etc., and chemical oxidation skill Art is quick, cost is controllable, has been widely used in field engineering reparation.Based technique for in-situ remediation is divided into original position according to embodiment Injection and stir in situ.
Stir in situ reparation carries out fixed point stirring frequently with engineering pile-forming equipment or digging machine stir in situ equipment and injects oxygen Chemical drug agent.After stir in situ the uniformity of the soil body for medicament and the soil body come into full contact with and final pollutant removal is imitated Fruit is affected, and differentiates relevant index system not yet for stir in situ soil body uniformity at present.
Invention content
According to the deficiencies of the prior art described above, It is an object of the present invention to provide a kind of Polluted Soil stir in situ uniformities Computational discrimination method, it is uniform which judges stir in situ in the plane by using pH value and moisture content Property, while it is uniform by using static sounding data and specific penetration resistance P S curve to judge stir in situ in the depth direction Property.
The object of the invention realization is completed by following technical scheme:
A kind of Polluted Soil stir in situ uniformity computational discrimination method, it is characterised in that the computational discrimination method includes following step Suddenly:Test obtains the pH value and moisture content of soil sample at each sampled point in the groups of samples being located in same depth plane, if same Variance≤0.5 PH and moisture content variance≤0.02 of each sampled point soil sample in the groups of samples then show described adopt Soil body stir in situ is uniform in depth plane where sampling point group.
The computational discrimination method is further comprising the steps of:Using static sounding device in situ to the soil body after stir in situ Static sounding in situ is carried out, to obtain static sounding data and specific penetration resistance P S curve in the depth direction, if in depth Each specific penetration resistance P S value on direction is no more than threshold value P, then shows that soil in-situ stirs evenly in the depth direction.
Soil layer is polluted for the superficial part being made of miscellaneous fill and cohesive soil, if each specific penetration resistance P S in the depth direction Value is no more than 0.3 MPa, then shows that soil in-situ stirs evenly in the depth direction.
The mode of the Polluted Soil stir in situ stirs for body formula, and it is in latticed prison that stir in situ region division, which is several, Survey unit.
Each sampled point in the groups of samples is arranged in center and four in the latticed monitoring unit Corner location.
The mode of the Polluted Soil stir in situ is the stirring of stake formula, and stir in situ region is by several adjacent overlapped mixing piles Body is composed, and each stirring pile body constitutes a monitoring unit.
Each sampled point in the groups of samples is arranged in the center of the stirring pile body and the adjacent stirring Crosspoint between pile body.
Each groups of samples is 0.5-1.0m in the setting spacing of depth direction.
It is an advantage of the invention that:It is judged using pH value, moisture content, specific penetration resistance P S as Polluted Soil stir in situ uniformity Index system, to realize the quick judgement of the uniformity in the plane and on depth direction to stir in situ.
Description of the drawings
Sampled point arrangement schematic diagram when Fig. 1 is body formula paddling process in the present invention;
Sampled point arrangement schematic diagram when Fig. 2 is stake formula paddling process in the present invention;
Fig. 3 is the sectional view of original position stirring region in the present invention;
Fig. 4 is the pH value and moisture content statistics in the present invention in the 3m depth bounds of monitoring unit 1-1,1-2,2-1,2-2,2-3 Table;
Fig. 5 is the pH value and moisture content statistical form in the 6m depth bounds of monitoring unit Z1, Z2, Z3, Z4 in the present invention;
Fig. 6 is the forward and backward soil body specific penetration resistance P S curve of stir in situ in a certain monitoring unit 6m depth bounds in the present invention Contrast schematic diagram.
Specific implementation mode
The feature of the present invention and other correlated characteristics are described in further detail by embodiment below in conjunction with attached drawing, with Convenient for the understanding of technical staff of the same trade:
Such as Fig. 1-6, respectively label is respectively in figure:Monitoring unit 1, sampled point 2, groups of samples 3, layering boundary line 4.
Embodiment 1:As shown in Figure 1,3, the present embodiment is specifically related to a kind of Polluted Soil stir in situ uniformity computational discrimination Method specifically includes following steps:
(1)As shown in Figure 1, completing the stir in situ to Polluted Soil using body formula stirring means, stir in situ region is constituted;It Afterwards, be several by stir in situ region division it is in latticed monitoring unit 1, grid is advisable with rectangular, and the area of each grid is not Preferably more than 25 ㎡, so-called body formula stirring specifically refers to that the pollution soil body is equally divided into several latticed lists before stirring Member utilizes stirring-head to complete the stirring reparation to each latticed unit later;
(2)As shown in Figure 1,3, different soil layers is distributed in the depth direction of stirring region in situ, and layering boundary line 4 is each soil Line of demarcation between layer;Therefore, in each monitoring unit 1, a groups of samples is arranged at interval of 0.5-1.0m along depth direction 3, it should be ensured that a groups of samples 3 is all disposed in each soil layer, each groups of samples 3 includes several in same level Sampled point 2, each sampled point 2 are distributed in the center position and four corner locations of grid;
(3)As shown in Figure 1,3, soil-like is carried out to each sampled point 2 respectively using fetch earth hand drill or lightweight sample acquisition machine The acquisition of product carries out pH value test, while utilizing baking oven using PH meters to soil sample acquired in same monitoring unit 1 later Method carries out soil sample acquired in same monitoring unit 1 test of moisture content;
(4)Object is judged using each monitoring unit 1 as one, with the sampled point in monitoring unit 1 in same depth plane Each sampled point 2 is one group in group 3, calculates the PH of soil sample and the average value of moisture content and variance, and carry out data comparison, specifically such as Under:
If variance≤0.5 soil sample PH between each sampled point 2 in the groups of samples 3 in same depth plane and moisture content Variance≤0.02, then it is assumed that the soil in-situ stirring in the monitoring unit 1 in corresponding depth plane is uniform, can also be recognized For the soil in-situ stirring of soil layer where the depth plane is also uniform;
In addition, PH variances above-mentioned and moisture content variance are smaller, then stir in situ is more uniform;
It is illustrated in figure 4 the pH value at monitoring unit 1-1,1-2,2-1,2-2,2-3 within the scope of 3m pollution depths in the present embodiment With moisture content statistical table, four corners and center point data of pH value and moisture content data for monitoring unit 1, and pH value is to be added PH value after sodium peroxydisulfate and sodium hydroxide stirring;As it can be seen that in monitoring unit 1-1, it is in situ at 1.0m and 2.0m depth planes It stirs evenly;In monitoring unit 1-2, stir in situ is uneven at 1.0m and 2.0m depth planes;In monitoring unit 2-1, Stir in situ is uneven at 1.0m and 2.0m depth planes;In monitoring unit 2-2, stirred in situ at 1.0m and 2.0m depth planes It mixes uniformly;In monitoring unit 2-3, stir in situ is uniform at 1.0m and 2.0m depth planes;
PH value and moisture content within the scope of 6m pollution depths at monitoring unit Z1, Z2, Z3, Z4 are illustrated in figure 5 in the present embodiment Statistical table, pH value and moisture content data are four corners and the center point data of monitoring unit 1, and pH value is that sodium peroxydisulfate is added PH value after being stirred with sodium hydroxide;As it can be seen that in monitoring unit Z1, stir in situ is uniform at 1.0m and 2.0m depth planes; In monitoring unit Z2, stir in situ is uneven at 1.0m and 2.0m depth planes;In monitoring unit Z3,1.0m and 2.0m are deep It is uniform to spend stir in situ at plane;In monitoring unit Z4, stir in situ is uniform at 1.0m and 2.0m depth planes;
(5)After completing to judge the stir in situ uniformity of monitoring unit 1 in the plane, continue to monitoring unit 1 in depth Stir in situ uniformity on degree direction is judged:
The uniformity of the soil body in the depth direction obtains static sounding by the way of static sounding in situ after the completion of stir in situ Data and specific penetration resistance P S curve, to be analyzed and be judged;It is illustrated in figure 6 in 1 depth bounds 6m of a certain monitoring unit Stir in situ before and after soil body specific penetration resistance P S curve comparison schematic diagram, first by the ratio after stir in situ on depth direction Penetration resistance Ps curves are compared with the original specific penetration resistance P S curve before stir in situ, the uniform soil body after stir in situ Soil strength can significantly reduce in longitudinal depth bounds after medicament injection and outer force-disturbance, and specific penetration resistance P S curve can be from Originally smoother curve is alternate with raised " burr " curve is changed into smooth continuous curve, and numerically significantly reduces, Curve is moved to the directions 0Mpa, thinks that soil body uniformity is preferable at this time;This is from the apparent determination method on image, the present embodiment In specifically quantify determination method and be:The static sounding data after stir in situ can be analyzed(A ratio can be generated at interval of 10cm Penetration resistance Ps values), soil layer is polluted often based on miscellaneous fill and cohesive soil for superficial part, soil body specific penetration resistance after stir in situ Ps values are generally in 0~0.3Mpa, it is believed that the soil body in place monitoring unit 1 has stirred evenly in the depth direction;If in situ Soil body specific penetration resistance P S value is more than 0.3MPa after stirring, then it is assumed that the soil body in place monitoring unit 1 is former in the depth direction Position stirring is uneven.
It should be noted that be above to the evaluation method of the stir in situ uniformity in a certain depth plane and The evaluation method of stir in situ uniformity on depth direction, generally speaking for monitoring unit 1, only when in monitoring unit 1 When stir in situ in each depth plane is judged as stir in situ uniformly and in the depth direction and is also judged as uniform, It can judge and think the monitoring unit 1 stir in situ is uniform on the whole.If conversely, in monitoring unit 1 in any depth plane Stir in situ be judged as stir in situ uneven or in the depth direction be judged as it is uneven, then judge think this Stir in situ is uneven on the whole for monitoring unit 1.
Embodiment 2:As shown in Figure 2,3, the present embodiment is specifically related to a kind of Polluted Soil stir in situ uniformity computational discrimination Method specifically includes following steps:
(1)As shown in Fig. 2, completing the stir in situ to Polluted Soil using stake formula stirring means, stir in situ region is constituted;It It afterwards, will each one monitoring unit 1 of the stereoscopic work of individual mixing pile;So-called stake formula stirring specifically refers to institute's shape after completion of stirring At cylindrical stirring pile body should carry out the overlap joint that intersects between adjacent stirring pile body when carrying out the stirring of stake formula;
(2)As shown in Figure 2,3, different soil layers is distributed in the depth direction of stirring region in situ, and layering boundary line 4 is each soil Line of demarcation between layer;Therefore, in each monitoring unit 1, a groups of samples is arranged at interval of 0.5-1.0m along depth direction 3, it should be ensured that a groups of samples 3 is all disposed in each soil layer, each groups of samples 3 includes several in same level Sampled point 2, each sampled point 2 are distributed in the overlap joint cross-point locations between the central point and adjacent stirring pile body of stirring pile body;
(3)As shown in Figure 2,3, soil-like is carried out to each sampled point 2 respectively using fetch earth hand drill or lightweight sample acquisition machine The acquisition of product carries out pH value test, while utilizing baking oven using PH meters to soil sample acquired in same monitoring unit 1 later Method carries out soil sample acquired in same monitoring unit 1 test of moisture content;
(4)Object is judged using each monitoring unit 1 as one, with the sampled point in monitoring unit 1 in same depth plane Each sampled point 2 is one group in group 3, calculates the PH of soil sample and the average value of moisture content and variance, and carry out data comparison, specifically such as Under:
If variance≤0.5 soil sample PH between each sampled point 2 in the groups of samples 3 in same depth plane and moisture content Variance≤0.02, then it is assumed that the soil in-situ stirring in the monitoring unit 1 in corresponding depth plane is uniform, can also be recognized For the soil in-situ stirring of soil layer where the depth plane is also uniform;
In addition, PH variances above-mentioned and moisture content variance are smaller, then stir in situ is more uniform;
(5)After completing to judge the stir in situ uniformity of monitoring unit 1 in the plane, continue to monitoring unit 1 in depth Stir in situ uniformity on degree direction is judged:
The uniformity of the soil body in the depth direction obtains static sounding by the way of static sounding in situ after the completion of stir in situ Data and specific penetration resistance P S curve, to be analyzed and be judged;It is illustrated in figure 6 in 1 depth bounds 6m of a certain monitoring unit Stir in situ before and after soil body specific penetration resistance P S curve comparison schematic diagram, first by the ratio after stir in situ on depth direction Penetration resistance Ps curves are compared with the original specific penetration resistance P S curve before stir in situ, the uniform soil body after stir in situ Soil strength can significantly reduce in longitudinal depth bounds after medicament injection and outer force-disturbance, and specific penetration resistance P S curve can be from Originally smoother curve is alternate with raised " burr " curve is changed into smooth continuous curve, and numerically significantly reduces, Curve is moved to the directions 0Mpa, thinks that soil body uniformity is preferable at this time;This is from the apparent determination method on image, the present embodiment In specifically quantify determination method and be:The static sounding data after stir in situ can be analyzed(A ratio can be generated at interval of 10cm Penetration resistance Ps values), soil layer is polluted often based on miscellaneous fill and cohesive soil for superficial part, soil body specific penetration resistance after stir in situ Ps values are generally in 0~0.3Mpa, it is believed that the soil body in place monitoring unit 1 has stirred evenly in the depth direction;If in situ Soil body specific penetration resistance P S value is more than 0.3MPa after stirring, then it is assumed that the soil body in place monitoring unit 1 is former in the depth direction Position stirring is uneven.

Claims (3)

1. a kind of Polluted Soil stir in situ uniformity computational discrimination method, it is characterised in that the computational discrimination method includes following Step:Test obtains the pH value and moisture content of soil sample at each sampled point in the groups of samples being located in same depth plane, if together Variance≤0.5 PH and moisture content variance≤0.02 of each sampled point soil sample in one groups of samples then show described Soil body stir in situ is uniform in depth plane where groups of samples.
2. a kind of Polluted Soil stir in situ uniformity computational discrimination method according to claim 1, it is characterised in that described Computational discrimination method is further comprising the steps of:Static(al) in situ is carried out to the soil body after stir in situ using static sounding device in situ Feeler inspection, to obtain static sounding data and specific penetration resistance P S curve in the depth direction, if each ratio in the depth direction Penetration resistance Ps values are no more than threshold value P, then show that soil in-situ stirs evenly in the depth direction.
3. a kind of Polluted Soil stir in situ uniformity computational discrimination method according to claim 2, it is characterised in that for Soil layer is polluted by the superficial part that miscellaneous fill and cohesive soil are constituted, if each specific penetration resistance P S value in the depth direction is no more than 0.3 MPa then shows that soil in-situ stirs evenly in the depth direction.
CN201810088773.8A 2018-01-30 2018-01-30 Polluted Soil stir in situ uniformity computational discrimination method Pending CN108356069A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102061687A (en) * 2010-12-09 2011-05-18 东南大学 Analytical method for determining soil body intensity parameter by in-situ static penetration test
CN102806228A (en) * 2012-08-08 2012-12-05 重庆大学 Contaminated soil ex-situ electrokinetic remediation device and method thereof
CN102980919A (en) * 2012-10-30 2013-03-20 上海交通大学 Determination method for uniformity of soil-cement admixture based on joint test of pH value and conductivity
CN103302091A (en) * 2013-06-09 2013-09-18 江苏大学 Sequencing-batch polluted soil remediation method and device
CN103624076A (en) * 2013-11-07 2014-03-12 江苏大学 Remediation method of soil polluted by polybrominated diphenyl ethers
CN104117529A (en) * 2014-07-09 2014-10-29 华南师范大学 In-situ remediation method of acidic soil containing heavy metals
CN104624632A (en) * 2015-01-26 2015-05-20 东南大学 Remediation method for hexavalent chromium polluted soil and underground water
CN105478464A (en) * 2016-01-26 2016-04-13 南京大学 Method for removing heavy metal in bottom mud
CN105694894A (en) * 2016-03-18 2016-06-22 济南大学 Preparation method and application of hexavalent chromium contaminated soil conditioner

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102061687A (en) * 2010-12-09 2011-05-18 东南大学 Analytical method for determining soil body intensity parameter by in-situ static penetration test
CN102806228A (en) * 2012-08-08 2012-12-05 重庆大学 Contaminated soil ex-situ electrokinetic remediation device and method thereof
CN102980919A (en) * 2012-10-30 2013-03-20 上海交通大学 Determination method for uniformity of soil-cement admixture based on joint test of pH value and conductivity
CN103302091A (en) * 2013-06-09 2013-09-18 江苏大学 Sequencing-batch polluted soil remediation method and device
CN103624076A (en) * 2013-11-07 2014-03-12 江苏大学 Remediation method of soil polluted by polybrominated diphenyl ethers
CN104117529A (en) * 2014-07-09 2014-10-29 华南师范大学 In-situ remediation method of acidic soil containing heavy metals
CN104624632A (en) * 2015-01-26 2015-05-20 东南大学 Remediation method for hexavalent chromium polluted soil and underground water
CN105478464A (en) * 2016-01-26 2016-04-13 南京大学 Method for removing heavy metal in bottom mud
CN105694894A (en) * 2016-03-18 2016-06-22 济南大学 Preparation method and application of hexavalent chromium contaminated soil conditioner

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
刘浩等: "宝钢COREX煤压块技术分析", 《钢铁》 *
唐冬梅: "静力触探在水泥搅拌桩桩身均匀性检测中的应用", 《城市建设理论研究》 *
陈辉: "客运专线基床底层改良土施工工艺及单价分析", 《铁路工程造价管理》 *

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Application publication date: 20180803