CN114481967A - Construction method of hydraulic engineering waste slag yard - Google Patents
Construction method of hydraulic engineering waste slag yard Download PDFInfo
- Publication number
- CN114481967A CN114481967A CN202210174342.XA CN202210174342A CN114481967A CN 114481967 A CN114481967 A CN 114481967A CN 202210174342 A CN202210174342 A CN 202210174342A CN 114481967 A CN114481967 A CN 114481967A
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- Prior art keywords
- slag
- dam
- waste
- slope
- downstream
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002893 slag Substances 0.000 title claims abstract description 126
- 239000002699 waste material Substances 0.000 title claims abstract description 88
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 230000000903 blocking effect Effects 0.000 claims abstract description 59
- 239000002689 soil Substances 0.000 claims abstract description 43
- 239000004575 stone Substances 0.000 claims abstract description 26
- 238000009412 basement excavation Methods 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 17
- 238000011144 upstream manufacturing Methods 0.000 claims description 14
- 239000004746 geotextile Substances 0.000 claims description 6
- 239000003864 humus Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 239000011241 protective layer Substances 0.000 claims description 4
- 244000025254 Cannabis sativa Species 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 239000010813 municipal solid waste Substances 0.000 claims 1
- 229920006395 saturated elastomer Polymers 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
-
- 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
- A01G20/00—Cultivation of turf, lawn or the like; Apparatus or methods therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/06—Earth-fill dams; Rock-fill dams
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/12—Technologies relating to agriculture, livestock or agroalimentary industries using renewable energies, e.g. solar water pumping
Abstract
The invention discloses a construction method of a hydraulic engineering waste slag yard. And in the later stage, the waste stone excavation and slag blocking dam is heightened, and the waste soil pile is not adopted to build the side slope outside the waste slag field. The slag blocking dam is heightened gradually along with excavation of waste stone, and the waste soil can be abandoned towards the inner area of the slag dump while the slag blocking dam is heightened. When the slag blocking dam is heightened, the width and the height of the dam body should be extended towards the downstream of the slag blocking dam. And after the waste slag is piled up, planting crops on the surface of the waste soil area in the waste slag field. The side slope outside the waste slag field is the waste stone, so that the side slope stability of the waste slag field is improved, meanwhile, the occupied area of the waste slag field can be effectively reduced, the soil loss of the waste slag field in the construction period is reduced, and the land utilization rate is improved.
Description
Technical Field
The invention relates to the technical field of hydraulic and hydroelectric engineering, in particular to a construction method of a hydraulic engineering waste slag yard.
Background
Buildings such as hydraulic engineering dams and the like generally require that a foundation is located on bedrock, and a large amount of spoil and stones are generated when the building foundation and various tunnels are excavated. According to the twenty-eighth regulation of the water and soil conservation law of the people's republic of China, special storage places are required to be arranged for the waste slag, and measures are taken to ensure that new harm is not generated.
The general waste slag field mainly comprises a blocking project and a slag stacking body. In order to support and protect the slag heaping body and prevent the slag heaping body from being unstable and collapsing, a retaining building needs to be arranged at the slope toe of the slag abandoning field. According to the terrain of the slag disposal site, the retaining engineering mainly comprises a slag retaining wall, a slag retaining dam, a slag enclosing weir and the like. The slag blocking dam is usually a gravity dam and an earth and rockfill dam, is influenced by economy and construction period, and is generally a low dam. The slag piling body is formed by gradually piling up waste soil and waste stones excavated from the building. The safety stability of the side slope of the waste slag field is influenced by the grain composition, physical and mechanical properties and other factors of waste slag soil and stones. In rainy season, after the side slope waste soil of the waste residue field is saturated, the mechanical property of the soil is reduced, the side slope safety of the waste residue field is greatly reduced, and the side slope instability can occur due to the surface waste soil saturation in rainy season in the waste residue field.
In the slag dumping process of the slag dumping field, when vegetation and other erosion-proof layers are not effectively formed on the outer side slope, rainwater erodes the side slope of the slag dumping field, so that water and soil loss of the slope surface of the outer side slope of the slag dumping field is caused.
Therefore, how to improve the safety of the abandoned dreg site, ensure the slope stability of the abandoned dreg site, reduce the occupied area of the abandoned dreg site, reduce the soil loss of the abandoned dreg site in the construction period and improve the land utilization rate is a problem to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a construction method of the hydraulic engineering spoil area, which solves the problems of slope stability of the spoil area and reduction of the soil loss of the spoil area in the construction period on one hand, prevents slope instability after slope spoil of the spoil area is saturated, and reduces the soil loss of the spoil area; on the other hand, after the spoil is piled up, crops are planted in the spoil area, and the land utilization rate is improved.
In order to solve the technical problems, the invention adopts the technical scheme that: a construction method of a hydraulic engineering slag abandoning field comprises the following steps:
(1) firstly, excavating waste stones to construct a low slag blocking dam, and only stacking waste soil in an inner area of a waste slag yard;
(2) increasing a slag blocking dam along with the gradual implementation of waste stone excavation, abandoning soil to the inner area of a slag abandoning field along with the gradual implementation of waste stone excavation, and extending the width and the height of a dam body to the downstream of the slag blocking dam when the slag blocking dam is increased;
(3) and after the waste slag is piled up, planting crops on the surface of the waste soil area in the waste slag field.
And greening the downstream dam slope surface of the slag blocking dam which is heightened at the later stage after the waste slag stacking is finished.
The greening of the downstream dam slope surface of the slag blocking dam with the increased later stage comprises the following steps: firstly spraying 8cm of humus soil on the downstream dam slope surface of the slag blocking dam which is heightened at the later stage, laying a mike cushion layer, and finally spraying a mixture containing 80-100 kg/hm of humus soil on the mike cushion layer2An ecological substrate of grass seeds.
The dam crest width of the low-built slag blocking dam is 4-6 m, the height of the low-built slag blocking dam is 5-8 m, the slope ratio of the upstream dam slope of the dam body is not steeper than 1:1.5, and the slope ratio of the downstream dam slope is not steeper than 1: 2.0.
The dam crest width of the slag blocking dam which is increased in the later period is 5-10 m, the slope ratio of the upstream dam slope of the dam body is not steeper than 1:1.5, the slope ratio of the downstream dam slope is not steeper than 1:2.0, and a platform which is 10-20 m wide is arranged on the downstream dam slope every 10-20 m height difference.
The upstream slope of the low slag blocking dam built in the early stage and the slag blocking dam heightened in the later stage are respectively provided with a layer of 500g/m2Soil ofThe work cloth is used as a reverse filter layer, and gravels with the thickness of 200mm and the thickness of 300mm are respectively used as protective layers on two sides of the geotextile.
The invention has the beneficial effects that: the water permeability and the slope stability of the waste residue field are good, and the slope can not generate safety accidents such as landslide and landslide after the waste soil is saturated in rainy season. The slag blocking dam is formed by piling up excavated waste stones, and compared with the traditional slag abandoning field, the slag abandoning dam reduces the occupied area of the slag abandoning field under the condition that the volume of the abandoned slag is the same. The external side slope of the waste slag field in the construction period is waste stones, and the soil loss is less compared with that under the condition that the external side slope is waste soil. Crops are planted in the spoil area, and the land utilization rate is improved.
Drawings
FIG. 1 is a cross-sectional view of a waste slag yard adopting the construction method of the hydraulic engineering waste slag yard.
FIG. 2 is a structural diagram of a low slag-blocking dam and a later heightened upstream inverted filter layer of the slag-blocking dam adopting the construction method of the hydraulic engineering slag abandoning field.
FIG. 3 is a later-stage heightened greening view of the downstream slope of the slag blocking dam by adopting the construction method of the hydraulic engineering slag abandoning yard.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in figures 1-3, the construction method of the hydraulic engineering slag abandoning field comprises the following steps:
(1) firstly, excavating waste stones to construct a low slag blocking dam 1, and stacking waste soil 2 in an inner area of a waste slag yard;
(2) gradually heightening the slag blocking dam along with excavation of waste stone, spoiling towards the inner area of the slag field, and extending the width and height of a dam body towards the downstream of the slag blocking dam 1 when heightening the slag blocking dam;
(3) and after the waste slag is piled up, planting crops on the surface of the waste soil area in the waste slag field.
Preferably, the method also comprises the step of greening the downstream slope surface of the slag blocking dam 3 which is heightened at the later stage after the stacking of the waste slag is finished. The greening comprises the following steps: firstly spraying 8cm of humus soil 6 on the downstream dam slope surface of the slag blocking dam 3 which is heightened at the later stage, laying a microphone cushion layer 7, and finally spraying a mixture containing 80-100 kg/hm of humus soil on the microphone cushion layer 72An ecological substrate 8 of grass seeds.
The dam crest width of the low-built slag blocking dam 1 is 4-6 m, the height of the low-built slag blocking dam is 5-8 m, the slope ratio of the upstream dam slope of the dam body is not steeper than 1:1.5, and the slope ratio of the downstream dam slope is not steeper than 1: 2.0.
The dam crest width of the slag blocking dam 3 which is raised in the later stage is 5-10 m, the slope ratio of the upstream dam slope of the dam body is not steeper than 1:1.5, the slope ratio of the downstream dam slope is not steeper than 1:2.0, and a platform which is 10-20 m wide is arranged on the downstream dam slope every 10-20 m height difference.
The upstream slope surfaces of the low slag blocking dam 1 built in the early stage and the slag blocking dam 3 built in the later stage are respectively provided with a layer of 500g/m2The geotextile 5 is used as a reverse filter layer, and gravels with the thickness of 200mm and the thickness of 300mm are respectively used as protective layers 4 on two sides of the geotextile.
The method comprises the steps of firstly, excavating waste stones to build a lower slag blocking dam 1, and piling waste soil 2 in an inner area of a waste slag yard. And in the later stage, the waste stone excavation and slag blocking dam is heightened, and the waste soil 2 is not adopted to build the side slope outside the waste slag field. The slag blocking dam 3 which is heightened in the later stage is gradually implemented along with excavation of waste stones, and the effect that the slag blocking dam is heightened while the waste soil 2 is abandoned towards the inner area of the waste slag field can be achieved. When the slag blocking dam is heightened, the width and the height of the dam body should be extended towards the downstream of the slag blocking dam 1. After the waste slag is piled up, crops are planted on the surface of the waste soil 2 area inside the waste slag yard.
In practical application, the slag blocking dam 1 can determine the section size according to the amount of waste stone excavated at the initial construction stage, and in a preferred embodiment, the width of the dam top is 4-6 m, the height of the dam top is 5-8 m, the slope ratio of the upstream dam to the downstream dam is not steeper than 1:1.5, and the slope ratio of the downstream dam is not steeper than 1: 2.0. In the preferable embodiment, the width of the dam crest is 5-10 m, the slope ratio of the upstream dam to the downstream dam is not steeper than 1:1.5, the slope ratio of the downstream dam to the upstream dam is not steeper than 1:2.0, and a platform with the width of 10-20 m is arranged on the downstream dam every 10-20 m of the height difference. The upstream slope of the low slag blocking dam 1 and the later-raised slag blocking dam 3 is provided with a reverse filtering layer 5, and in a preferred embodiment, the reverse filtering layer 5 is a layer of 500g/m2The two sides of the geotextile are respectively provided with gravels with the thickness of 200mm and gravels with the thickness of 300mm as the protective layers 4.
In the embodiment, the low slag blocking dam 1 and the later-period heightened slag blocking dam 3 are formed by piling up excavated waste stones, the water permeability and the slope stability are good, and safety accidents such as landslide and collapse of the slope after the slope is saturated by waste soil in rainy season can be avoided. The downstream dam slope of the slag blocking dam 3 which is heightened in the later stage is used for excavating waste stones, the impact resistance is strong, the soil loss amount of a waste slag field in the construction period is small, and after the waste slag stacking is finished, the downstream dam slope surface of the slag blocking dam 3 which is heightened in the later stage is greened, so that the soil loss amount of the waste slag field is further reduced, and a good landscape effect is formed. Crops are planted in the spoil 2 area in the spoil area, and the land utilization rate is improved.
In this embodiment, a lower slag blocking dam is constructed by using waste stones for excavating the diversion tunnel, and surface waste soil is excavated in buildings such as a dam and the like stacked in an inner area of a waste slag yard. The lower-layer abandoned stones excavated by buildings such as dams are used for heightening the slag blocking dam, the width and the height of the dam body are extended towards the downstream of the slag blocking dam when the dam body is heightened, and the slag blocking dam with the external part being abandoned stones and the internal part being abandoned soil are finally formed along with the stacking of the abandoned stones and the abandoned soil. And after the waste residue stacking is finished, greening the slope surface of the dam slope at the downstream of the residue blocking dam, and planting crops in the waste soil area inside.
The above-mentioned embodiments are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and not to limit the scope of the present invention, and equivalent changes and modifications made without departing from the concept and principle of the present invention still fall within the scope of the present invention.
Claims (6)
1. A construction method of a hydraulic engineering waste slag yard is characterized by comprising the following steps:
(1) firstly, excavating waste stones to construct a low slag blocking dam, and only stacking waste soil in an inner area of a waste slag yard;
(2) increasing a slag blocking dam along with the gradual implementation of waste stone excavation, abandoning soil to the inner area of a slag abandoning field along with the gradual implementation of waste stone excavation, and extending the width and the height of a dam body to the downstream of the slag blocking dam when the slag blocking dam is increased;
(3) and after the waste slag is piled up, planting crops on the surface of the waste soil area in the waste slag field.
2. The construction method of the hydraulic engineering waste slag yard according to claim 1, further comprising greening the downstream slope of the dam with an increased height at a later stage after the waste slag is piled up.
3. The construction method of the hydraulic engineering spoil area according to claim 2, wherein greening the slope of the downstream dam slope of the raised trash dam in the later period comprises: firstly spraying 8cm of humus soil on the downstream dam slope surface of the slag blocking dam which is heightened at the later stage, laying a mike cushion layer, and finally spraying a material containing 80-100 kg/hm of humus soil on the mike cushion layer2An ecological substrate of grass seeds.
4. The construction method of the hydraulic engineering slag abandoning field according to claim 1, wherein the dam crest of the constructed low slag blocking dam has a width of 4-6 m and a height of 5-8 m, the slope ratio of the upstream dam to the downstream dam is not steeper than 1:1.5, and the slope ratio of the downstream dam is not steeper than 1: 2.0.
5. The construction method of the hydraulic engineering slag abandoning field according to claim 1, wherein the dam crest width of the slag blocking dam with the height increased at the later stage is 5-10 m, the slope ratio of the upstream dam is not steeper than 1:1.5, the slope ratio of the downstream dam is not steeper than 1:2.0, and a platform with the width of 10-20 m is arranged on the downstream dam slope at intervals of the height difference of 10-20 m.
6. The construction method of the hydraulic engineering slag abandoning field according to claim 1, wherein a layer of 500g/m is arranged on the upstream slope of the low slag blocking dam constructed in the early stage and the slag blocking dam heightened in the later stage2The geotextile as a reverse filter, wherein gravels with the thickness of 200mm and the thickness of 300mm are respectively used as protective layers on two sides of the geotextile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210174342.XA CN114481967A (en) | 2022-02-24 | 2022-02-24 | Construction method of hydraulic engineering waste slag yard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210174342.XA CN114481967A (en) | 2022-02-24 | 2022-02-24 | Construction method of hydraulic engineering waste slag yard |
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| Publication Number | Publication Date |
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| CN114481967A true CN114481967A (en) | 2022-05-13 |
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| CN202210174342.XA Pending CN114481967A (en) | 2022-02-24 | 2022-02-24 | Construction method of hydraulic engineering waste slag yard |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007247201A (en) * | 2006-03-15 | 2007-09-27 | Fujita Corp | Manufacturing method for levee soil and dam body repair method for fill dam |
| CN101632993A (en) * | 2008-07-22 | 2010-01-27 | 鞍钢集团矿业公司 | Method for building tailings dam through adoption of mine dumping |
| CN203096697U (en) * | 2013-03-01 | 2013-07-31 | 中国水电顾问集团北京勘测设计研究院 | Ballast field structure at earth and rockfill dam toe |
| CN103821131A (en) * | 2014-02-25 | 2014-05-28 | 西安理工大学 | Method for restoring water and soil conservation ecology in development and construction project |
| CN111305210A (en) * | 2020-03-05 | 2020-06-19 | 中钢集团马鞍山矿山研究总院股份有限公司 | Ultra-fine grain tailing pond heightening and expanding heap-discharging structure adopting midline method for one-time dam building |
| CN213740900U (en) * | 2020-08-06 | 2021-07-20 | 中国电建集团华东勘测设计研究院有限公司 | Ecological earth and rockfill dam |
-
2022
- 2022-02-24 CN CN202210174342.XA patent/CN114481967A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007247201A (en) * | 2006-03-15 | 2007-09-27 | Fujita Corp | Manufacturing method for levee soil and dam body repair method for fill dam |
| CN101632993A (en) * | 2008-07-22 | 2010-01-27 | 鞍钢集团矿业公司 | Method for building tailings dam through adoption of mine dumping |
| CN203096697U (en) * | 2013-03-01 | 2013-07-31 | 中国水电顾问集团北京勘测设计研究院 | Ballast field structure at earth and rockfill dam toe |
| CN103821131A (en) * | 2014-02-25 | 2014-05-28 | 西安理工大学 | Method for restoring water and soil conservation ecology in development and construction project |
| CN111305210A (en) * | 2020-03-05 | 2020-06-19 | 中钢集团马鞍山矿山研究总院股份有限公司 | Ultra-fine grain tailing pond heightening and expanding heap-discharging structure adopting midline method for one-time dam building |
| CN213740900U (en) * | 2020-08-06 | 2021-07-20 | 中国电建集团华东勘测设计研究院有限公司 | Ecological earth and rockfill dam |
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| 朱文;范永平;王童;焦莹;: "贵州土石山区水利水电工程弃渣场选取及防护措施", 水利水电工程设计, no. 03, pages 1 - 3 * |
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