CN113737768A - Construction process for improving soil property of side slope - Google Patents
Construction process for improving soil property of side slope Download PDFInfo
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- CN113737768A CN113737768A CN202111072352.4A CN202111072352A CN113737768A CN 113737768 A CN113737768 A CN 113737768A CN 202111072352 A CN202111072352 A CN 202111072352A CN 113737768 A CN113737768 A CN 113737768A
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- 239000002689 soil Substances 0.000 title claims abstract description 82
- 238000010276 construction Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 47
- 230000008569 process Effects 0.000 title claims abstract description 44
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 31
- 238000002347 injection Methods 0.000 claims abstract description 21
- 239000007924 injection Substances 0.000 claims abstract description 21
- 238000004080 punching Methods 0.000 claims abstract description 12
- 238000009966 trimming Methods 0.000 claims abstract description 7
- 230000000414 obstructive effect Effects 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 241000196324 Embryophyta Species 0.000 claims description 6
- 230000035515 penetration Effects 0.000 claims description 5
- 239000008262 pumice Substances 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000005056 compaction Methods 0.000 claims description 2
- 230000006872 improvement Effects 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 4
- 230000008635 plant growth Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental Sciences (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention provides a construction process for improving the soil property of a side slope, which belongs to the technical field of ecological management engineering and comprises the following steps: clearing obstacles on the slope surface, which are obstructive to the construction, and trimming the slope surface; punching on the slope surface according to a preset transverse and longitudinal distance; preparing an improvement reagent, and injecting the improvement reagent into each drill hole respectively; wherein the injection of the modified reagent into each borehole follows the principle of equal, multiple, intermittent injection; backfilling with non-expansive alien soil and tamping. According to the construction process for improving the soil property of the side slope, provided by the invention, the soil property is easier to repair essentially, the mechanical property of the soil is better improved, and the self anti-destruction capability of the slope is fundamentally improved; this construction process consumes with low costsly, compares other bank protection modes, and this technology the later stage that significantly reduces protection intensity to reduce later stage bank protection cost.
Description
Technical Field
The invention belongs to the technical field of ecological management engineering, and particularly relates to a construction process for improving the soil property of a side slope.
Background
The existing side slope protection is usually applied to the direct slope protection of a poor soil side slope by adopting a concrete structure or the slope protection of a facing wall, so that the protection grade is generally higher, the protection cost is increased, and in addition, the ecological effect is lower. Although the greening effect is improved by adopting the modes of grid anchor rod slope protection, herringbone framework slope protection and the like, the greening effect is not obvious because the soil quality is possibly not suitable for plant growth, the slope soil quality still has the possibility of damage along with the gradual development of the bad soil quality in the slope and the influence of external factors, and the greening effect has great influence on the life and property safety of people.
Disclosure of Invention
The invention aims to provide a construction process for improving the soil property of a side slope, and aims to provide a slope protection method which is low in cost and fundamentally improves the slope protection capability.
In order to achieve the purpose, the invention adopts the technical scheme that: the construction process for improving the soil property of the side slope comprises the following steps:
clearing obstacles on the slope surface, which are obstructive to construction, and trimming the slope surface;
secondly, punching on the slope surface according to a preset transverse and longitudinal distance;
step three, preparing an improved reagent, and respectively injecting the improved reagent into each drill hole; wherein the injection of the modified reagent into each borehole follows the principle of equal, multiple, intermittent injection;
and step four, backfilling and tamping by using the non-expansive alien soil.
Preferably, the trimming treatment of the slope surface in the first step comprises: and for the parts with the protruded and easy-to-fall slope surfaces, performing one or more of knocking-down treatment, and manually filling and compacting the slope surfaces with the depressions.
Preferably, the obstacles in step one comprise vegetation junctions, one or more of contact surfaces of original slopes, weeds, fallen leaves and dry branches, and pumice.
Preferably, there is no need to clean the underground rhizomes of vegetation when cleaning the vegetation engaging portion.
Preferably, a vertical punching mode is adopted in the step two; or/and
the horizontal and vertical spacing between adjacent drill holes is 80cm multiplied by 80 cm; or/and
the diameter of the drill hole is 10 cm; or/and
the depth of the drill hole is 80 cm.
Preferably, when the modifying agent is injected into the drill hole in the third step, the mass size of a single injection is 1-3kg, and the interval is not less than 48h, then the injection is carried out again for 1-3kg, and each drill hole is injected with the modifying agent for multiple times.
Preferably, the degree of compaction in step five is not less than 93%.
Preferably, the modifying agent is shaken well before being used in step three.
Preferably, in the second step, holes are sequentially punched from the top of the side slope to the bottom when the punching operation is performed.
Preferably, the method further comprises the steps of preparing a soil sample of the original slope body, analyzing the soil sample, and determining the penetration speed and the penetration depth of the solution; determining the depth and diameter of the drilled hole and the distance between the holes; and selecting the components and the proportion of the improving reagent according to the soil property.
The construction process for improving the soil property of the side slope has the beneficial effects that: compared with the prior art, the construction process for improving the soil property of the side slope is easier to realize the restoration of the soil property essentially, the mechanical property of the soil property is better improved, and the self anti-destruction capability of the slope is fundamentally improved; compared with other slope protection modes, the construction process has the advantages that the cost is low, and the process can greatly reduce the later protection strength by changing the mechanical property of soil, so that the later slope protection cost is reduced; the process can also meet the requirements of plant growth and improve the environment of a slope body, thereby providing a slope protection mode with good ecological property; the process is flexible and changeable, different drilling depths and numbers can be selected for different soil qualities, and suitable improving reagents are prepared so as to improve the soil qualities appropriately.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a three-dimensional structure diagram of a slope drilling hole in a construction process of a construction technology for improving the soil property of a side slope according to an embodiment of the invention;
FIG. 2 is a schematic structural view of a slope surface drilling interval in the construction process of the construction process for improving the soil property of the side slope according to the embodiment of the invention;
fig. 3 is a schematic structural diagram of a diameter of a hole drilled on a slope surface in a construction process of a construction process for improving soil properties of the slope according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a slope drilling depth in a construction process of a construction process for improving soil property of a side slope according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a construction process for improving the soil property of a slope according to an embodiment of the present invention after completion of the construction;
FIG. 6 is a block diagram of a process for improving the soil property of a slope according to an embodiment of the present invention;
fig. 7 is a block diagram of a process of another construction process for improving soil property of a slope according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 6, a construction process for improving the soil property of a slope according to the present invention will now be described. The construction process for improving the soil property of the side slope comprises the following steps:
s1, clearing obstacles on the slope surface, which hinder the construction, and trimming the slope surface;
during construction, firstly obstacles on the slope surface, which obstruct the construction, are removed, specifically, the method comprises the step of removing a joint part of vegetation and the slope surface, namely, the contact surface (surface) of the original slope surface, so as to eradicate plant branches growing on the original slope surface. Also comprises the step of cleaning up weeds, fallen leaves, dead branches, pumice and other sundries on the surface of the original side slope. This step can prevent effectively that the existence of barrier from influencing the construction of later stage drilling operation. The step can effectively avoid personnel falling caused by unstable slope surface of the original side slope, and the safety of construction is ensured. Meanwhile, the accuracy of drilling positioning can be effectively guaranteed.
In this step, when the plant branches are eradicated, there is no need to clean the underground roots of the vegetation.
In this step, the operation process of trimming the slope surface includes: and (4) performing impact treatment on the parts which are protruded on the original slope surface and are easy to fall off. And (5) manually filling the slope surface with the depression. Fill up the domatic and can let drilling machine more steady the operation of punching, guaranteed that the hole depth satisfies and predetermines the requirement. The occurrence of the situation that the hole openings are not flat or/and the positions of all the hole depths are not on the same plane can be prevented. The improvement reagent can be uniformly and consistently diffused in the drilled hole, and the improvement effect of the soil quality of the slope body is improved.
The slope is smooth and clean, and the accuracy of later-stage drilling position positioning is also improved.
S2, punching on the slope surface according to the preset transverse and longitudinal intervals;
the implementation manner of this step may be:
and vertically drilling holes on the slope surface at the transverse and longitudinal intervals of 80cm multiplied by 80cm, wherein the depth of the drilled holes is 80cm, and the diameter of the drilled holes is 10 cm.
Specifically, the position of the drill hole is determined by manually positioning through a measuring tape. And then punching on the slope surface by using a punching machine with the diameter of 10cm, wherein the length of the drill body of the punching machine is one meter, and a mark is made at the position of 80cm, so that the hole depth reaches the mark position. And digging out the broken soil in the drilled hole by using a digging spoon after the drilling is finished.
It should be noted that when the holes are punched, the holes are sequentially punched from the top of the side slope downwards, so that the upper broken soil is prevented from burying the lower holes.
S3, preparing an improvement reagent, and injecting the improvement reagent into each drill hole respectively; wherein the injection of the modified reagent into each borehole follows the principle of equal, multiple, intermittent injection;
in the step, the required improvement reagent is prepared from the prepared materials according to the preset proportion, and the materials are fully shaken up and vibrated after being prepared, so that the solid particles are fully dissolved.
The improvement reagent needs to be prepared by clear water and corresponding solid particles and powder, and is mixed according to a certain proportion, so that the particles and the powder are fully dissolved in water, corresponding chemical substances can be uniformly absorbed by soil, and the improvement effect is better.
The improved reagent comprises: polyvinyl alcohol, CMA weak acid resin liquid, polyacrylamide and one or more of adhesives. The adhesive comprises lignin liquid, phenol, furfural and urea.
The structural formula of the adhesive is as follows:
in the step, when the modifying agent is injected into the drill holes, the mass size of a single injection is 1-3kg, and the interval is not less than 48h, then the injection is carried out again for 1-3kg, and the modifying agent is injected into each drill hole for multiple times.
More specifically, the modifying agent solution was injected into the borehole in a single 2kg injection per hole, and 2kg per hole was repeated after 48h intervals for a total of three injections. The injected reagent is gradually absorbed by soil body, and because the volume of the drilled hole is fixed, if the injected reagent is too much, the reagent overflows, and if the injected reagent is too little, the space of the drilled hole is wasted, so that 2kg of reagent needs to be injected once. Because the soil body can not meet the improvement requirement by one-time injection, the soil body needs to be injected for many times. In order to ensure that the solution is fully permeated into the soil body each time, the solution is injected into the soil body after a certain time interval.
And S4, backfilling by using the non-expansive alien soil and tamping.
In the embodiment, the compactness needs to reach 93 percent, and the stability of the filled foreign soil is ensured.
And the foreign soil is selected for filling, so that the adverse condition of the original slope soil is avoided. The selected foreign soil is beneficial to the stability of the slope body and is also beneficial to the better implementation of the subsequent slope protection construction.
Compared with the prior art, the construction process for improving the soil property of the side slope is easier to realize the restoration of the soil property essentially, the mechanical property of the soil property is better improved, and the self anti-destruction capability of the slope is fundamentally improved; compared with other slope protection modes, the construction process has the advantages that the cost is low, and the process can greatly reduce the later protection strength by changing the mechanical property of soil, so that the later slope protection cost is reduced; the process can also meet the requirements of plant growth and improve the environment of a slope body, thereby providing a slope protection mode with good ecological property; the process is flexible and changeable, different drilling depths and numbers can be selected for different soil qualities, and suitable improving reagents are prepared so as to improve the soil qualities appropriately.
The soil property improvement is to achieve the purpose of meeting corresponding engineering activities by improving the engineering geological properties of soil. The properties of the engineering geology, to which soil is directly related to the engineering structure, are mainly water permeability and mechanical properties (compressibility and resistance to damage), while they depend on the material composition and structural characteristics of the soil. Therefore, the soil texture improvement is to substantially change the components and structure of soil to achieve the purpose of improving the properties. For some side slopes with poor soil quality, the side slopes can be better protected by improving the soil characteristics, the corresponding mechanical properties of the side slopes are improved, the side slopes are more suitable for plant growth, the environment is beautified, and the corresponding slope protection cost can be reduced.
The invention also provides a construction process for improving the soil property of the side slope, which is shown in fig. 1 to 7 and comprises the following steps:
SS1, preparing soil samples of original slopes in the early stage, determining the speed and depth of solution penetration, and determining the depth and diameter of a drill hole and the distance between holes required in construction operation; determining materials required for preparing the improving reagent according to the soil property characteristics, and matching with a proper improving reagent;
SS2, and clearing all obstacles on the slope surface which are harmful to the construction. Which comprises the following steps: and removing the vegetation combination part and cleaning the contact surface of the original side slope. And removing weeds, fallen leaves, dead branches, pumice and the like on the surface of the slope. Excavation of the underground roots of vegetation is not necessary.
SS3, finishing the slope. And (3) knocking off the parts which obviously have bulges and are easy to fall off, and filling the slope surfaces which obviously sink, so that the slope surfaces are as flat as possible.
SS4, slope set point, and vertical drilling of marked points on the slope. And (3) drawing points on the slope surface at a transverse and longitudinal interval of 80cm multiplied by 80cm, marking points from the top of the slope surface downwards in a fixed point sequence, and marking points which are less than 80cm away from the boundary of the slope surface. When the hole is punched, the depth of the drilled hole is 80cm, and the diameter of the drilled hole is 10 cm.
More specifically, a perforating machine with the diameter of 10cm is used for perforating, the length of a drill body of the perforating machine is one meter, a mark is made at the position of 80cm, the hole depth is guaranteed to reach the mark position, broken soil in the hole is dug out by a digging spoon after perforating is finished, the hole is sequentially perforated from the top of the side slope, and the broken soil on the hole is prevented from burying the hole on the lower portion.
SS5, preparing the required modifying reagent from the prepared material; the modifying reagent solution is then injected into the borehole.
The specific operation is as follows: and mixing the corresponding materials according to a preset proportion, and then fully shaking up and shaking up to ensure that the particles and the powder are fully dissolved in water.
The injection of the modified reagent solution into the borehole requires attention: the single injection was 2kg for a single well, and the single injection was repeated for 2kg after 48h intervals for a total of three injections.
SS6, backfilling with non-expansive alien soil and tamping, and ensuring that the compactness is not less than 93%.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A construction process for improving the soil property of a side slope is characterized by comprising the following steps:
clearing obstacles on the slope surface, which are obstructive to construction, and trimming the slope surface;
secondly, punching on the slope surface according to a preset transverse and longitudinal distance;
step three, preparing an improved reagent, and respectively injecting the improved reagent into each drill hole; wherein the injection of the modified reagent into each borehole follows the principle of equal, multiple, intermittent injection;
and step four, backfilling and tamping by using the non-expansive alien soil.
2. The construction process for improving the soil property of the side slope as claimed in claim 1, wherein: the trimming treatment of the slope surface in the first step comprises the following steps: and for the parts with the protruded and easy-to-fall slope surfaces, performing one or more of knocking-down treatment, and manually filling and compacting the slope surfaces with the depressions.
3. The construction process for improving the soil property of the side slope as claimed in claim 1, wherein: the barrier in the first step comprises a vegetation combination part, one or more of a contact surface of an original side slope, weeds, fallen leaves and dry branches and pumice.
4. The construction process for improving the soil property of the side slope as claimed in claim 3, wherein: when the vegetation joint is cleaned, underground rhizomes of vegetation do not need to be cleaned.
5. The construction process for improving the soil property of the side slope as claimed in claim 1, wherein: in the second step, a vertical punching mode is adopted; or/and
the horizontal and vertical spacing between adjacent drill holes is 80cm multiplied by 80 cm; or/and
the diameter of the drill hole is 10 cm; or/and
the depth of the drill hole is 80 cm.
6. The construction process for improving the soil property of the side slope as claimed in claim 5, wherein: when the modifying agent is injected into the drill holes in the third step, the mass size of a single injection is 1-3kg, and the interval is not less than 48h, then the injection is carried out again for 1-3kg, and the modifying agent is injected into each drill hole for multiple times.
7. The construction process for improving the soil property of the side slope as claimed in claim 1, wherein: and the degree of compaction in the step five is not less than 93%.
8. The construction process for improving the soil property of the side slope as claimed in claim 1, wherein: the modifying reagent is shaken well before being used in step three.
9. The construction process for improving the soil property of the side slope as claimed in claim 1, wherein: and in the second step, holes are sequentially punched from the top of the side slope downwards during punching operation.
10. The construction process for improving the soil property of the side slope as claimed in claim 1, wherein: preparing a soil sample of an original slope body, analyzing the soil sample, and determining the penetration speed and the penetration depth of the solution; determining the depth and diameter of the drilled hole and the distance between the holes; and selecting the components and the proportion of the improving reagent according to the soil property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111072352.4A CN113737768A (en) | 2021-09-14 | 2021-09-14 | Construction process for improving soil property of side slope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111072352.4A CN113737768A (en) | 2021-09-14 | 2021-09-14 | Construction process for improving soil property of side slope |
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| CN113737768A true CN113737768A (en) | 2021-12-03 |
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| CN202111072352.4A Pending CN113737768A (en) | 2021-09-14 | 2021-09-14 | Construction process for improving soil property of side slope |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100842372B1 (en) * | 2007-03-09 | 2008-06-30 | 극동엔지니어링(주) | Pretension soil nail method of top-down |
| CN105887801A (en) * | 2016-05-16 | 2016-08-24 | 浙江工业大学 | Method for improving expansive soil foundation through ardealite and waste tire rubber powder |
| CN113373951A (en) * | 2021-05-20 | 2021-09-10 | 杭州交投建设工程有限公司 | Silt slope stability control method for slope stabilization by using chemical improvement reagent |
-
2021
- 2021-09-14 CN CN202111072352.4A patent/CN113737768A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100842372B1 (en) * | 2007-03-09 | 2008-06-30 | 극동엔지니어링(주) | Pretension soil nail method of top-down |
| CN105887801A (en) * | 2016-05-16 | 2016-08-24 | 浙江工业大学 | Method for improving expansive soil foundation through ardealite and waste tire rubber powder |
| CN113373951A (en) * | 2021-05-20 | 2021-09-10 | 杭州交投建设工程有限公司 | Silt slope stability control method for slope stabilization by using chemical improvement reagent |
Non-Patent Citations (2)
| Title |
|---|
| 毛久海等: "化学试剂改良在膨胀土地区公路边坡防护中的应用", 《工程技术研究》 * |
| 王丹等: "高分子材料在化学固沙中的应用", 《生物质化学工程》 * |
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