CN108380650A - The points distributing method that Polluted Soil stir in situ uniformity differentiates - Google Patents
The points distributing method that Polluted Soil stir in situ uniformity differentiates Download PDFInfo
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- CN108380650A CN108380650A CN201810088603.XA CN201810088603A CN108380650A CN 108380650 A CN108380650 A CN 108380650A CN 201810088603 A CN201810088603 A CN 201810088603A CN 108380650 A CN108380650 A CN 108380650A
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- situ
- stir
- monitoring unit
- polluted soil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses the points distributing methods that a kind of Polluted Soil stir in situ uniformity differentiates, it is characterised in that the points distributing method is：The division of unit is monitored according to the mode of Polluted Soil stir in situ；Different depth position in the monitoring unit is respectively arranged with a groups of samples, and the groups of samples includes several sampled points in the same plane, and the soil sample acquired from each sampled point is carried out to the test of pH value test and moisture content.It is an advantage of the invention that：It layouts uniformly, different classes of soil layer can be covered in the depth direction, and entire monitoring unit can be covered in the plane, 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
Technical field
The invention belongs to field of environment engineering technology, and in particular to a kind of Polluted Soil stir in situ uniformity differentiation is layouted
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 standard or method 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
The points distributing method of differentiation, the points distributing method is by the way that sampled point to be evenly spaced on and the plane of monitoring unit along depth direction
It is inside uniformly distributed, to cover the different classes of soil layer on depth direction when stir in situ uniformity being enable to differentiate.
The object of the invention realization is completed by following technical scheme：
The points distributing method that a kind of Polluted Soil stir in situ uniformity differentiates, it is characterised in that the points distributing method is：According to pollution
The mode of native stir in situ is monitored the division of unit；Different depth position in the monitoring unit is respectively arranged with one
Groups of samples, the groups of samples include several sampled points in the same plane, will be acquired from each sampled point
Soil sample carry out pH value test and moisture content test.
The mode of the Polluted Soil stir in situ stirs for body formula, and stir in situ region division is to be several in latticed institute
State monitoring unit.
Each sampled point in the groups of samples be arranged in the monitoring unit center and four corner locations.
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.
In the monitoring unit, each groups of samples is 0.5-1.0m in the setting spacing of depth direction.
A groups of samples is at least disposed in each soil layer on the monitoring unit depth direction respectively.
The points distributing method further includes the static sounding point in situ for being arranged in the monitoring unit center position, is used
Static sounding device in situ carries out static sounding in situ to the static sounding point in situ in each monitoring unit successively,
To obtain each monitoring unit static sounding data in the depth direction and specific penetration resistance P S curve, if the monitoring is single
Each specific penetration resistance P S value of member in the depth direction is no more than threshold value P, then shows in the monitoring unit in depth direction
Upper stir in situ is uniform.
It is an advantage of the invention that：It layouts uniformly, different classes of soil layer can be covered in the depth direction, and can be in plane
On cover entire monitoring unit, 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 the cloth that a kind of Polluted Soil stir in situ uniformity differentiates
Point methods are related to the selection of sampled point and static sounding point in situ and the judgement of Polluted Soil stir in situ uniformity, specifically
Include the 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, which is distributed in the center position of grid and four corner locations, center position, to be reflected
Overall condition in monitoring unit 1, and four corner locations are actually also the crosspoint between adjacent monitoring unit 1, it can
The case where reflecting 1 boundary position of monitoring unit；
（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 is obtained by the way of static sounding in situ after the completion of stir in situ, in each monitoring
The center position of unit 1 is respectively arranged a static sounding point in situ, using static sounding device in situ successively in each monitoring
Static sounding in situ is carried out at static sounding point in situ in unit 1, to obtain static sounding data and specific penetration resistance
Ps curves, to be analyzed and be judged；It is illustrated in figure 6 soil before and after the stir in situ in 1 depth bounds 6m of a certain monitoring unit
Body specific penetration resistance P S curve comparison schematic diagram, first by after stir in situ on depth direction specific penetration resistance P S curve with
Original specific penetration resistance P S curve before stir in situ is compared, and the uniform soil body after stir in situ is in medicament injection and external force
Soil strength can significantly reduce in longitudinal depth bounds after disturbance, specific penetration resistance P S curve can from original smoother curve with
Raised " burr " curve is alternate to be changed into smooth continuous curve, and numerically significantly reduces, and curve is moved to the directions 0Mpa
It is dynamic, think that soil body uniformity is preferable at this time；This is the specifically quantization judgement from the apparent determination method on image, the present embodiment
Method is:The static sounding data after stir in situ can be analyzed（A specific penetration resistance P S value can be generated at interval of 10cm）, right
In superficial part pollution soil layer often based on miscellaneous fill and cohesive soil, after stir in situ soil body specific penetration resistance P S value generally 0~
0.3Mpa, it is believed that the soil body in place monitoring unit 1 has stirred evenly in the depth direction；If soil body ratio passes through after stir in situ
It is more than 0.3MPa to enter resistance Ps values, then it is assumed that stir in situ is uneven in the depth direction for the soil body in place monitoring unit 1.
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 the cloth that a kind of Polluted Soil stir in situ uniformity differentiates
Point methods specifically include 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,
Center position can reflect the overall condition of stirring pile body, and the boundary overlap joint of stirring pile body can be reflected by overlapping cross-point locations then
Situation；
（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：
（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 is obtained by the way of static sounding in situ after the completion of stir in situ, in each monitoring
The center position of unit 1 is respectively arranged a static sounding point in situ, using static sounding device in situ successively in each monitoring
Static sounding in situ is carried out at static sounding point in situ in unit 1, to obtain static sounding data and specific penetration resistance
Ps curves, to be analyzed and be judged；It is illustrated in figure 6 soil before and after the stir in situ in 1 depth bounds 6m of a certain monitoring unit
Body specific penetration resistance P S curve comparison schematic diagram, first by after stir in situ on depth direction specific penetration resistance P S curve with
Original specific penetration resistance P S curve before stir in situ is compared, and the uniform soil body after stir in situ is in medicament injection and external force
Soil strength can significantly reduce in longitudinal depth bounds after disturbance, specific penetration resistance P S curve can from original smoother curve with
Raised " burr " curve is alternate to be changed into smooth continuous curve, and numerically significantly reduces, and curve is moved to the directions 0Mpa
It is dynamic, think that soil body uniformity is preferable at this time；This is the specifically quantization judgement from the apparent determination method on image, the present embodiment
Method is:The static sounding data after stir in situ can be analyzed（A specific penetration resistance P S value can be generated at interval of 10cm）, right
In superficial part pollution soil layer often based on miscellaneous fill and cohesive soil, after stir in situ soil body specific penetration resistance P S value generally 0~
0.3Mpa, it is believed that the soil body in place monitoring unit 1 has stirred evenly in the depth direction；If soil body ratio passes through after stir in situ
It is more than 0.3MPa to enter resistance Ps values, then it is assumed that stir in situ is uneven in the depth direction for the soil body in place monitoring unit 1.
Claims (8)
1. the points distributing method that a kind of Polluted Soil stir in situ uniformity differentiates, it is characterised in that the points distributing method is：According to dirt
The mode of the native stir in situ of dye is monitored the division of unit；Different depth position in the monitoring unit is respectively arranged with
One groups of samples, the groups of samples include several sampled points in the same plane, will be adopted from each sampled point
The soil sample of collection carries out the test of pH value test and moisture content.
2. the points distributing method that a kind of Polluted Soil stir in situ uniformity according to claim 1 differentiates, it is characterised in that institute
It states the mode of Polluted Soil stir in situ to stir for body formula, stir in situ region division is several single in the latticed monitoring
Member.
3. the points distributing method that a kind of Polluted Soil stir in situ uniformity according to claim 2 differentiates, it is characterised in that institute
State each sampled point in groups of samples be arranged in the monitoring unit center and four corner locations.
4. the points distributing method that a kind of Polluted Soil stir in situ uniformity according to claim 1 differentiates, it is characterised in that institute
State the mode of Polluted Soil stir in situ for stake formula stir, stir in situ region by it is several it is adjacent overlapped stirring pile body combine and
At each stirring pile body constitutes a monitoring unit.
5. the points distributing method that a kind of Polluted Soil stir in situ uniformity according to claim 4 differentiates, it is characterised in that institute
Each sampled point in groups of samples is stated to be arranged between the center and the adjacent stirring pile body of the stirring pile body
Crosspoint.
6. the points distributing method that a kind of Polluted Soil stir in situ uniformity according to claim 1 differentiates, it is characterised in that
In the monitoring unit, each groups of samples is 0.5-1.0m in the setting spacing of depth direction.
7. the points distributing method that a kind of Polluted Soil stir in situ uniformity according to claim 1 differentiates, it is characterised in that
A groups of samples is at least disposed in each soil layer on the monitoring unit depth direction respectively.
8. the points distributing method that a kind of Polluted Soil stir in situ uniformity according to claim 1 differentiates, it is characterised in that institute
It further includes the static sounding point in situ for being arranged in the monitoring unit center position to state points distributing method, is touched using static(al) in situ
It visits device and static sounding in situ is carried out to the static sounding point in situ in each monitoring unit successively, to obtain each institute
Monitoring unit static sounding data in the depth direction and specific penetration resistance P S curve are stated, if the monitoring unit is in depth side
Upward each specific penetration resistance P S value is no more than threshold value P, then shows in the monitoring unit stir in situ in the depth direction
Uniformly.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114888069A (en) * | 2022-04-14 | 2022-08-12 | 中交天航环保工程有限公司 | Point location design method for in-situ chemical oxidation remediation of contaminated soil |
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Application publication date: 20180810 |