CN114134910A - Karst collapse flexible treatment method - Google Patents
Karst collapse flexible treatment method Download PDFInfo
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- CN114134910A CN114134910A CN202111536434.XA CN202111536434A CN114134910A CN 114134910 A CN114134910 A CN 114134910A CN 202111536434 A CN202111536434 A CN 202111536434A CN 114134910 A CN114134910 A CN 114134910A
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- Prior art keywords
- collapse
- layer
- treatment method
- collapse pit
- gravel
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- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000004575 stone Substances 0.000 claims abstract description 40
- 239000002689 soil Substances 0.000 claims abstract description 32
- 239000004927 clay Substances 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 10
- 241000196324 Embryophyta Species 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/18—Making embankments, e.g. dikes, dams
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0037—Clays
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Botany (AREA)
- Environmental Sciences (AREA)
- Revetment (AREA)
Abstract
The invention relates to the technical field of geological environment restoration. Discloses a karst collapse flexible treatment method, which comprises the following steps: s1 clear: removing the fractured rock-soil mass around the collapse pit; s2, filling the gabion: filling gabions into the collapse pit in a throwing mode, and enabling the gabions to fall to the narrowest width part of the collapse pit, so that the gabions are deformed and clamped at the narrowest width part of the collapse pit; s3 backfilling crushed stone: backfilling gravel units in the collapse pit to fill the gabion with the gravel units and backfilling the collapse pit upwards; s5 backfilling the overburden soil: covering the surface of the collapse pit with overburden soil; s6 planting: and planting plants on the covering soil. The method mainly solves the problem that the traditional collapse pit treatment method needs manual work to go deep into the collapse pit for operation, and has safety risk to workers.
Description
Technical Field
The invention relates to the technical field of geological environment restoration.
Background
Karst collapse is a karst cave, an overlying sediment and underground water to form a solid, liquid and gas three-phase mechanical balance system, the underground water level changes to a certain extent, balance is destroyed, the overlying loose sediment suddenly collapses to form a deep collapse pit without bottom; the collapse pit is shaped like a column, and the upper and lower width of the collapse pit is larger than the middle width of the collapse pit.
At present, the traditional collapse pit treatment method comprises the following steps: workers need to go deep into the collapse pit, and after the fixed bottom plate is embedded and fixed, covering objects are added on the fixed bottom plate layer by layer; by adopting the mode, the worker needs to go deep into the collapse pit for operation, and safety risks exist for the worker.
Disclosure of Invention
The invention aims to provide a karst collapse flexible treatment method to solve the problem that the traditional collapse pit treatment method needs manual work to go deep into a collapse pit and has safety risk to workers.
In order to achieve the above object, the basic scheme of the invention is as follows: a karst collapse flexible treatment method comprises the following steps:
s1 clear: removing the fractured rock-soil mass around the collapse pit;
s2, filling the gabion: filling gabions into the collapse pit in a throwing mode, and enabling the gabions to fall to the narrowest width part of the collapse pit, so that the gabions are deformed and clamped at the narrowest width part of the collapse pit;
s3 backfilling crushed stone: backfilling gravel units in the collapse pit to fill the gabion with the gravel units and backfilling the collapse pit upwards;
s5 backfilling the overburden soil: covering the surface of the collapse pit with overburden soil;
s6 planting: and planting plants on the covering soil.
The advantages of the basic scheme are:
1. the periphery of the collapse pit is more stable by removing the fractured rock-soil body around the collapse pit, so that the fractured rock-soil body cannot fall off; the gabion falls to the narrowest part of the collapse pit, so that the gabion deforms and is clamped at the narrowest part of the collapse pit, namely, the limiting effect of the gabion at the narrowest part of the collapse pit is better under the action of the falling force of the gabion; backfilling the collapse pit by adopting a stone crushing unit to fill the gabion with the collapse pit and backfilling the collapse pit upwards; covering the surface of the collapse pit with the alien soil, planting plants on the alien soil, and then preventing soil from losing after the plants are rooted so as to play a role in stabilizing the soil; compare in prior art, this scheme has replaced the artifical mode of deepening the interior installation PMKD of collapse pit with its card in the narrowest department of width in collapse pit through the mode of throwing and filling the gabion for the staff need not to deepen the interior operation in collapse pit, has reduced the safety risk.
2. According to the scheme, the gabion is clamped at the narrowest width part of the collapse pit, and then the covering is backfilled; in the prior art, after a worker needs to go deep into a collapse pit to fix a fixing bottom plate, the covering is backfilled, so that the position of the fixing bottom plate is possibly close to the bottom position of the collapse pit, the covering backfilled in the prior art is more than that of the scheme, and therefore the cost can be reduced.
Covering with foreign soil: selecting mellow soil with a soil layer of 0-20cm from the peripheral area of the treatment field, wherein the mellow soil can be directly used for planting plants.
Further, an S4 backfill clay located between S3 and S5 is also included: and backfilling clay into the collapse pit, wherein the clay is positioned between the third layer of crushed stone and the covering soil.
Through the arrangement, a water-resisting layer can be formed through the clay, and water permeation is avoided.
Further, the gravel unit comprises a first layer of gravel, a second layer of gravel and a third layer of gravel which are backfilled in the collapse pit in sequence, the particle size of the first layer of gravel is not smaller than that of the second layer of gravel, and the particle size of the second layer of gravel is not smaller than that of the third layer of gravel.
Through the setting, the collapse pit is backfilled in sequence through the first layer of broken stones, the second layer of broken stones and the third layer of broken stones, so that gaps between the broken stones and the broken stones are filled with the broken stones with different particle sizes, namely, backfilling compaction is realized, gaps can be effectively avoided between the broken stones and the broken stones, further, the occurrence of secondary collapse is avoided, the treatment effect is enhanced, and the treatment stability is also improved.
Further, the backfill thickness of the clay is 0.1-0.3 m.
Through the above setting, the optimum is selected.
Further, the particle size of the first layer of crushed stone is more than 0.5 m.
Through the above setting, the optimum is selected.
Furthermore, the grain diameter of the second layer of broken stone is 0.2-0.5m, and the backfill thickness of the second layer of broken stone is 1-1.5 m.
Through the above setting, the optimum is selected.
Furthermore, the particle size of the third layer of broken stone is 0.1-0.2m, and the backfill thickness of the second layer of broken stone is 0.8-1.2 m.
Through the above setting, the optimum is selected.
Further, the backfill thickness of the overburden soil is 0.4-0.6 m.
Through the above setting, the optimum is selected.
Detailed Description
The following is further detailed by way of specific embodiments:
examples
A karst collapse flexible treatment method comprises the following steps:
s1 clear: removing the unstable fractured rock-soil mass around the collapse pit;
s2, filling the gabion: filling gabions into the collapse pit in a throwing mode, and enabling the gabions to fall to the narrowest width part of the collapse pit, so that the gabions are deformed and clamped at the narrowest width part of the collapse pit;
s3 backfilling crushed stone: sequentially backfilling a first layer of crushed stone, a second layer of crushed stone and a third layer of crushed stone into the collapse pit, namely sequentially backfilling the first layer of crushed stone, the second layer of crushed stone and the third layer of crushed stone from bottom to top in the collapse pit; the particle size of the first layer of crushed stone is more than 0.5m, the particle size of the second layer of crushed stone is 0.2-0.5m, the backfill thickness of the second layer of crushed stone is 1.2m, the particle size of the third layer of crushed stone is 0.1-0.2m, and the backfill thickness of the second layer of crushed stone is 1 m; filling the gabion with the first layer of crushed stones, the second layer of crushed stones and the third layer of crushed stones and backfilling the collapse pit upwards;
s4 backfill clay: and backfilling clay into the collapse pit, wherein the clay covers the surface of the third layer of crushed stone, and the backfilling thickness of the clay is 0.2 m.
S5 backfilling the overburden soil: covering the surface of the collapse pit with the overburden soil, wherein the backfill thickness of the overburden soil is 0.5 m.
S6 planting: plants are planted on the covering soil, and the plants can be selected from native plants for treating the soil.
In the backfilling process, the tamping coefficient of filling, downward leakage in the backfilling process and later-period settlement are considered, so that the backfilling amount is larger than the volume of the collapse pit, and the filling coefficient of 1.3 is selected.
The foregoing is merely an example of the present invention and common general knowledge in the art of specific structures and/or features of the invention has not been set forth herein in any way. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. A karst collapse flexible treatment method is characterized by comprising the following steps: the method comprises the following steps:
s1 clear: removing the fractured rock-soil mass around the collapse pit;
s2, filling the gabion: filling gabions into the collapse pit in a throwing mode, and enabling the gabions to fall to the narrowest width part of the collapse pit, so that the gabions are deformed and clamped at the narrowest width part of the collapse pit;
s3 backfilling crushed stone: backfilling gravel units in the collapse pit to fill the gabion with the gravel units and backfilling the collapse pit upwards;
s5 backfilling the overburden soil: covering the surface of the collapse pit with overburden soil;
s6 planting: and planting plants on the covering soil.
2. The karst collapse flexible treatment method according to claim 1, wherein the flexible treatment method comprises the following steps: also included is S4 backfill clay between S3 and S5: and backfilling clay into the collapse pit, wherein the clay is positioned between the third layer of crushed stone and the covering soil.
3. The karst collapse flexible treatment method according to claim 2, wherein the flexible treatment method comprises the following steps: the backfill thickness of the clay is 0.1-0.3 m.
4. The karst collapse flexible treatment method according to claim 3, wherein the flexible treatment method comprises the following steps: the gravel unit comprises a first layer of gravel, a second layer of gravel and a third layer of gravel which are backfilled in the collapse pit in sequence, the particle size of the first layer of gravel is not smaller than that of the second layer of gravel, and the particle size of the second layer of gravel is not smaller than that of the third layer of gravel.
5. The karst collapse flexible treatment method according to claim 4, wherein the flexible treatment method comprises the following steps: the grain diameter of the first layer of broken stones is more than 0.5 m.
6. The karst collapse flexibility treatment method according to any one of claims 4-5, wherein: the grain diameter of the second layer of broken stone is 0.2-0.5m, and the backfill thickness of the second layer of broken stone is 1-1.5 m.
7. The karst collapse flexible treatment method according to claim 6, wherein the flexible treatment method comprises the following steps: the grain diameter of the third layer of broken stone is 0.1-0.2m, and the backfill thickness of the second layer of broken stone is 0.8-1.2 m.
8. The karst collapse flexible treatment method according to claim 1, wherein the flexible treatment method comprises the following steps: the backfill thickness of the overburden soil is 0.4-0.6 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111536434.XA CN114134910A (en) | 2021-12-15 | 2021-12-15 | Karst collapse flexible treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111536434.XA CN114134910A (en) | 2021-12-15 | 2021-12-15 | Karst collapse flexible treatment method |
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| Publication Number | Publication Date |
|---|---|
| CN114134910A true CN114134910A (en) | 2022-03-04 |
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| CN202111536434.XA Pending CN114134910A (en) | 2021-12-15 | 2021-12-15 | Karst collapse flexible treatment method |
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| CN (1) | CN114134910A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2860529A1 (en) * | 2003-10-03 | 2005-04-08 | France Gabion | CIVIL ENGINEERING WORK, INDIVIDUAL BUILDING ELEMENT AND METHOD FOR STRENGTHENING SUCH A WORK |
| CN104863031A (en) * | 2015-05-11 | 2015-08-26 | 长安大学 | Karst region ductile anti-collapse roadbed structure and construction method of Karst region ductile anti-sag roadbed structure |
-
2021
- 2021-12-15 CN CN202111536434.XA patent/CN114134910A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2860529A1 (en) * | 2003-10-03 | 2005-04-08 | France Gabion | CIVIL ENGINEERING WORK, INDIVIDUAL BUILDING ELEMENT AND METHOD FOR STRENGTHENING SUCH A WORK |
| CN104863031A (en) * | 2015-05-11 | 2015-08-26 | 长安大学 | Karst region ductile anti-collapse roadbed structure and construction method of Karst region ductile anti-sag roadbed structure |
Non-Patent Citations (1)
| Title |
|---|
| 管华军: "钢筋石笼在务坪水库主干渠沉陷处理中的应用", 《科技传播》 * |
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Application publication date: 20220304 |