CN106013178A - Filling method for karst surface collapse of shallow-buried karst area - Google Patents
Filling method for karst surface collapse of shallow-buried karst area Download PDFInfo
- Publication number
- CN106013178A CN106013178A CN201610354147.XA CN201610354147A CN106013178A CN 106013178 A CN106013178 A CN 106013178A CN 201610354147 A CN201610354147 A CN 201610354147A CN 106013178 A CN106013178 A CN 106013178A
- Authority
- CN
- China
- Prior art keywords
- gravel
- karst
- filling
- slope
- excavation
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a filling treatment method for surface collapse of shallow-buried karst caves of a karst area. According to the method, the excavation earthing gradient is designed according to distribution and development situations of the shallow-buried karst caves detected out through exploration; the karst caves are filled with gravel to corresponding cave openings after excavation, and the gravel filling the caves is 200-800 mm in diameter; then geotechnical cloth is laid on a slope to the ground and outwards extends by the length not smaller than 1.5 times the pit depth; after laying is completed, the cave openings are filled with graded gravel to the ground and tamping in layers is conducted; and nutrient soil is laid on the surface layer backfilled with the gravel and vegetation is planted. Disadvantages of a conventional filling method are avoided; and not only is the anti-collapse and water guide treatment effect guaranteed, but also certain durability is achieved. Engineering practice proves that the filling method has relatively good practicability and can be used for treatment for the karst surface collapse. The filling treatment method for the surface collapse of the shallow-buried karst caves of the karst area has a relatively good environmental protection effect, materials are easy to obtain, and the cost is low.
Description
Technical field
The present invention relates to the placement method of a kind of karst ground subsidence, particularly shallow buried type karst area surface collapse hole
Environment-friendly type method for filling and treating, belongs to foundation treatment technology field.
Technical background
Karst ground subsidence refers in karst area, the solution cavity in solvable rock stratum, bottom or the soil cave in upper overburden layer, top
Plate unstability produces slump or the general designation of depression.Since the 1950's, due to the fast development of engineering activity, karst collapse
Geological disaster is the most increased.Particularly Jin10Nian Lai China Urbanization Construction progress faster, to karst region water resource and soil
The exploitation of resource strengthen day by day, and frequency, intensity and harm that karst ground subsidence occurs are the most increasing.Therefore, karst
The governing problem of surface collapse is always karst area engineering construction to be needed in the face of one of major issue with solution.Shallow buried type rock
Molten district surface collapse is the karst collapse problem often occurred, shallow buried type karst region surface collapse is administered by prior art, typically
Element soil, dirt, gravel, rubble, concrete material filling method is used to process, but all Shortcomings.Wherein element soil, dirt from
Poor stability, easily causes secondary and subsides, only as auxiliary filler；Concrete filling is effective, but manufacture process is deposited
In high energy consumption, maximum discharge, the problem of high pollution, and Concrete Filled thing changes the circulation path of subsoil water at pitfall, makes
Become its elsewhere water level to go up, form again new subsiding；The material such as gravel, rubble is easily obtained, and filling effect is preferable, but exists
Owing to material gravel footpath and grating select improper, cause fine grained or soil layer to be washed and cause secondary to subside problem, at present, in filling
Gravel gradation design aspect there is no guidance foundation, also has no the document report of karst ground subsidence filling method.To this end, find one
Both can guarantee that backfilling material Stability Analysis of Structures, and effective filling construction method that infiltration is washed away can have been prevented and treated again, become field of foundation treatment
The common problem paid close attention to.
Summary of the invention
It is an object of the invention to provide the placement method of a kind of shallow buried type Karst surface collapse, solve at present
Conventional karst is filled in administering method, and the subsoil water channel blockage caused due to inserts problem or sidewall wash away and cause continuing
The technical problem subsided.
The present invention solves its technical problem and adopts the technical scheme that such.A kind of shallow buried type Karst ground
The placement method subsided, comprises the following steps:
(1) selection of pack gravel
Selecting unweathered non-solvable class rock gravel, stone, remove lamellar gravel, filler is first chosen sample and is carried out indoor sulfur resistive
Hydrochlorate erosion test, and its mass decrement ratio not can exceed that 12% after sulfate attack；
(2) gradation design of filling graded gravel
Pack gravel should meet following grating and require:
Maximum particle diameter is less than 800mm, and uniform particle sizes is distributed in the gravel accounting of 200mm ~ 500mm and is not less than 50%, and particle diameter is less than
Gravel accounting equal to 50mm is less than 10%；
(3) filling work progress
The first step: find out distribution and the scale of karst soil cave, and design excavation and put slope ratio of slope；
Second step: excavation scope will be drawn by putting slope ratio of slope at karst collapse, slope excavation is put in classification, until soil rock interface, and
Ensureing that the solution cavity entrance shape in basement rock is oval, greatest diametrical dimension is 800～1200mm；
3rd step: filling particle diameter is the bulk gravel of 200mm ~ 800mm in solution cavity, the end face being backfilled to gravel is slightly above Tu Yan
Interface；
4th step: set anti-seepage geotextile on the upper berth, slope of excavation, it is desirable to geotextiles paving is pushed up to slope and has the extension of certain distance,
Extension distance is not less than 1.5～2.0 times of soil thickness, and is not less than 5.0m；Geotextiles seam uses hot weld to connect.
5th step: filling meets the building stones of gradation design requirement, lift height 400mm～600mm backfills, and uses flat board
Tamper is tamped, and from middle to the rounded compacting of peripheral direction during compacting, is backfilled to top, slope design altitude；
6th step: backfill soil end face is built 200mm～300mm thickness by laying bricks or stones and grouted cobblestone protection, and mortar strength is M15, and thickness is
200mm。
7th step: grout the excavation spoir in cobblestone layer above filling second step, until original ground, battalion is laid on top layer
Support soil 200～300mm, and plant the green vegetation being suitable for local environment.
The ultimate principle of the present invention is:
1, gravel grating requires to sum up draw with reference to by loaded filter principle foundation engineering experience；
2, filling bulk gravel in solution cavity, the principle refilling middle small particle gravel afterwards is: karst region
Face mechanic analysis of cave-in shows, under groundwater effect, solution cavity constantly expands and punctures Upper Plate of Karst Cave and then the 4th is
Forming soil cave in soil layer, soil cave continues to expand arrival ground and is formed for subsiding.In this process, the 4th is the soil of cover layer
Why grain can be taken away by current is because the result that the footpath circulation road that solution cavity exists communicates with basement rock, therefore for preventing small particle
Gravel brought into the footpath circulation road in solution cavity by water and form secondary surface collapse, so there being this to design.
3, the water being disposed to avoid or reduce in environment of geotextiles enters solution cavity, prevents pitfall week
The soil enclosed is brought into the pitfall administered and solution cavity by current, causes solution cavity secondary to cave in or crosses aquaporin blocking；
4, grouting cobblestone layer is to prevent upper strata filling soil generation submarine erosion action.
The present invention obtains and provides the benefit that:
The present invention is for the improvement of shallow buried type karst soil cave, by executing in pack gravel selection, pack gravel gradation design, filling
The aspect such as work engineering method proposes specific requirement so that filling method design more rationally accurately, is more easy to reach management goal, it is to avoid tradition
The general drawback estimating way, both ensure that regulation effect, had had again certain durability.Concrete do not selected by filler, can
Reducing cement and cause environmental pollution and the adverse effect to surrounding, have positive effect to environmental conservation, material is easy to get,
Engineering cost is relatively low.
Accompanying drawing explanation
Fig. 1 is the filling method schematic diagram of the present invention.
In figure, label represents and is meant that:
1, vegetation 2, backfill soil 3, cobblestone course the 4, the 4th are cover layer 5, graded broken stone 6, geotextiles 7, basement rock.
Detailed description of the invention
Following example are used for the present invention is described.
Embodiment
Guangxi China karst region administration project, place is typical karst features, and the groove formed is corroded in place corrosion,
Having the stone tooth of prominent distribution between groove, place is distributed uvala, locally Surface mulch admaic earth.Due to place basement rock rock
Molten growth, all have employed pile foundation for the buildings or structures of project and processes, but in the range of plant area green belt, in order to anti-
Only subside further, karst need to be taked treatment measures, use the method for the present invention to carry out filling treatment.
The karst collapse filling procedure utilizing the present invention is:
The first step: find out distribution and the scale of karst soil cave, and to design excavation and put slope ratio of slope be 1:1.
Second step: mark excavation scope by putting slope ratio of slope at karst collapse, use mini-excavator to press the slope ratio of 1:1,
Slope excavation is put in classification, cutting depth 3.5 meters to soil rock interface, and the solution cavity entrance in excavation basement rock is sub-circular, maximum straight
Footpath a size of 1000mm；
3rd step: the cobble of uniform pack 200mm～800mm in solution cavity, uniform particle sizes is distributed as: shared by 500mm～800mm
Ratio 25%, the gravel accounting example 68% of 200mm ~ 500mm；More than the particle diameter gravel accounting 7% less than or equal to 50mm.Make filling broken
In the tapered distribution of stone and solution cavity, and appropriate compacting is filled to solution cavity aperture.
4th step: lay geotextiles on the slope body of excavation, geotextile laying extends above 5.3m, such as figure to top, excavation slope
In 1 shown in label 6.Geotextiles seam uses hot weld to connect.
5th step: by graded broken stone back-filling in layers, every layer of backfill thickness 500mm, and use flat board tamper to tamp.Compacting
Time by from centre to four sides direction carry out.Graded broken stone is backfilled to push up 300mm higher than slope, and its section landfill becomes ladder
Shape.
6th step: end face uses and grouts cobblestone protection, and mortar strength is M15, and thickness is 200mm.Such as label 3 in Fig. 1
Shown in.
7th step: at cobblestone top backfill element soil, and use flat board tamper to tamp.Backfill soil top covers 200mm
Thick Nutrition Soil the afforestation vegetation that gushs, such as label 1 in Fig. 1.
By above-mentioned process, preferably resolve the problem that the process of karst region solution cavity is coordinated mutually with environmental greening, obtain
Well effect.
Claims (1)
1. the placement method of a shallow buried type Karst surface collapse, it is characterised in that comprise the following steps:
(1) selection of pack gravel
Selecting unweathered non-solvable class rock gravel, stone, remove lamellar gravel, filler is first chosen sample and is carried out indoor sulfur resistive
Hydrochlorate erosion test, and its mass decrement ratio not can exceed that 12% after sulfate attack；
(2) gradation design of filling graded gravel
Pack gravel should meet following grating and require:
Maximum particle diameter is less than 800mm, and uniform particle sizes is distributed in the gravel accounting of 200mm ~ 500mm and is not less than 50%, and particle diameter is less than
Gravel accounting equal to 50mm is less than 10%；
(3) filling work progress
The first step: find out distribution and the scale of karst soil cave, and design excavation and put slope ratio of slope；
Second step: excavation scope will be drawn by putting slope ratio of slope at karst collapse, slope excavation is put in classification, until soil rock interface, and
Ensureing that the solution cavity entrance shape in basement rock is oval, greatest diametrical dimension is 800～1200mm；
3rd step: filling particle diameter is the bulk gravel of 200mm ~ 800mm in solution cavity, the end face being backfilled to gravel is slightly above Tu Yan
Interface；
4th step: set anti-seepage geotextile on the upper berth, slope of excavation, it is desirable to geotextiles paving is pushed up to slope and has the extension of certain distance,
Extension distance is not less than 1.5～2.0 times of soil thickness, and is not less than 5.0m；Geotextiles seam uses hot weld to connect；
5th step: filling meets the building stones of gradation design requirement, lift height 400mm～600mm backfills, and uses flat board to tamp
Device is tamped, and from middle to the rounded compacting of peripheral direction during compacting, is backfilled to top, slope design altitude；
6th step: backfill soil end face is built 200mm～300mm thickness by laying bricks or stones and grouted cobblestone protection, and mortar strength is M15, and thickness is
200mm；
7th step: grout the excavation spoir in cobblestone layer above filling second step, until original ground, Nutrition Soil is laid on top layer
200～300mm, and plant the green vegetation being suitable for local environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610354147.XA CN106013178B (en) | 2016-05-25 | 2016-05-25 | A kind of placement method of shallow buried type Karst surface collapse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610354147.XA CN106013178B (en) | 2016-05-25 | 2016-05-25 | A kind of placement method of shallow buried type Karst surface collapse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106013178A true CN106013178A (en) | 2016-10-12 |
| CN106013178B CN106013178B (en) | 2019-01-04 |
Family
ID=57093932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610354147.XA Active CN106013178B (en) | 2016-05-25 | 2016-05-25 | A kind of placement method of shallow buried type Karst surface collapse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106013178B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469042A (en) * | 2018-12-10 | 2019-03-15 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of antiseepage stockyard place karst cave treatment structure |
| CN109778825A (en) * | 2019-01-09 | 2019-05-21 | 中国矿业大学 | Re-scheduling structure water barrier boundary sewing method in a kind of opencut |
| CN111119197A (en) * | 2020-01-12 | 2020-05-08 | 桂林电子科技大学 | Geotextile-based covering type karst area ground collapse treatment method |
| CN114483171A (en) * | 2022-01-06 | 2022-05-13 | 紫金矿业集团股份有限公司 | Buried pipe backfill bottom sealing grouting method for karst collapse treatment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19724785A1 (en) * | 1997-06-05 | 1998-12-17 | Felix Kunzewitsch | Method for laying transport rail tracks on compressed bed of sand and gravel |
| CN2908612Y (en) * | 2006-01-18 | 2007-06-06 | 贵阳铝镁设计研究院 | Level anti-leakage structure for red mud field of karst ared |
| WO2010131330A1 (en) * | 2009-05-12 | 2010-11-18 | オフィチネ マッカフェリ エス・ピー・エー | Method of suppressing deformation of embankment |
| CN203546702U (en) * | 2013-09-18 | 2014-04-16 | 中国水电顾问集团贵阳勘测设计研究院 | Foundation treatment structure for karst areas |
-
2016
- 2016-05-25 CN CN201610354147.XA patent/CN106013178B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19724785A1 (en) * | 1997-06-05 | 1998-12-17 | Felix Kunzewitsch | Method for laying transport rail tracks on compressed bed of sand and gravel |
| CN2908612Y (en) * | 2006-01-18 | 2007-06-06 | 贵阳铝镁设计研究院 | Level anti-leakage structure for red mud field of karst ared |
| WO2010131330A1 (en) * | 2009-05-12 | 2010-11-18 | オフィチネ マッカフェリ エス・ピー・エー | Method of suppressing deformation of embankment |
| CN203546702U (en) * | 2013-09-18 | 2014-04-16 | 中国水电顾问集团贵阳勘测设计研究院 | Foundation treatment structure for karst areas |
Non-Patent Citations (1)
| Title |
|---|
| 邓家喜: "广西典型岩溶发育区路基基底勘察及处治技术的研究", 《中国优秀硕士学位论文全文数据库（电子期刊）》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469042A (en) * | 2018-12-10 | 2019-03-15 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of antiseepage stockyard place karst cave treatment structure |
| CN109469042B (en) * | 2018-12-10 | 2024-03-26 | 中国电建集团贵阳勘测设计研究院有限公司 | Anti-seepage storage yard field karst cave processing structure |
| CN109778825A (en) * | 2019-01-09 | 2019-05-21 | 中国矿业大学 | Re-scheduling structure water barrier boundary sewing method in a kind of opencut |
| CN109778825B (en) * | 2019-01-09 | 2020-09-18 | 中国矿业大学 | Strip mine inner drainage reconstruction water-resisting layer boundary stitching method |
| CN111119197A (en) * | 2020-01-12 | 2020-05-08 | 桂林电子科技大学 | Geotextile-based covering type karst area ground collapse treatment method |
| CN114483171A (en) * | 2022-01-06 | 2022-05-13 | 紫金矿业集团股份有限公司 | Buried pipe backfill bottom sealing grouting method for karst collapse treatment |
| CN114483171B (en) * | 2022-01-06 | 2022-12-09 | 紫金矿业集团股份有限公司 | Buried pipe backfill bottom sealing grouting method for karst collapse treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106013178B (en) | 2019-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106703050A (en) | Expansive soil road cutting side slope reinforced soil back-pressure seepage-preventive supporting structure and construction method thereof | |
| CN108560542B (en) | Waste tire coated building slag bidirectional reinforcement and construction method thereof | |
| CN101634143A (en) | Method for treating spiral oil-extruding filling pile composite foundation in stratum containing soft clay | |
| CN106013178B (en) | A kind of placement method of shallow buried type Karst surface collapse | |
| CN108978385A (en) | A kind of roadbed construction method on the road Tong Cun | |
| CN110241695A (en) | A kind of gravelly soil superelevation fill foundation reinforcement means | |
| CN108330764A (en) | Shallow-layer cures Piled Embankments and construction method | |
| CN111322087A (en) | Construction method for soft soil highway tunnel entrance semi-open semi-hidden tunnel in mountainous area | |
| CN109594575A (en) | A kind of open caisson periphery grouting and reinforcing soil body construction method | |
| CN111608174A (en) | Karst area karst cave treatment method based on punched cast-in-place pile | |
| CN108824412B (en) | Soft foundation treatment method based on gabion wall reinforced soil and dynamic compaction combination | |
| CN106320368A (en) | Construction method applicable to open-excavation pipeline at compound stratum | |
| CN110080232A (en) | A kind of deep basal pit earth-filling method of underground high water level | |
| CN109610429A (en) | Sedimentation treatment method under a kind of Collapsible Loess District prevention gas collection station ground and terrace | |
| CN103276717B (en) | The method of composite earthwork synthetic materials reinforcement cushion soft soil foundation | |
| CN107881987A (en) | Deep covering layer top panel Rockfill Dam based moisture barrier structure | |
| CN107700513A (en) | A kind of anti-excavation construction method of pile cover | |
| CN116377780A (en) | Mountain highway high-fill roadbed filling construction method | |
| CN215976663U (en) | Excavation area composite foundation treatment structure crossing under high-voltage line | |
| CN206873466U (en) | One kind is used for footrill flume section safeguard structure | |
| CN206220108U (en) | Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction | |
| CN109056441A (en) | The soft soil roadbed three-dimensional reinforced structure of convolution and construction method are knitted in stake- | |
| CN108316077A (en) | One kind underlies shallow embedding cave dwelling roadbed treatment structures and method | |
| CN209907365U (en) | Treatment structure of stepped easily-weathered soft sandstone layer foundation | |
| CN103774698B (en) | Soil engineering drainage-free construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 050000 No. 555 Huai'an West Road, Luquan District, Shijiazhuang City, Hebei Province Patentee after: China Hebei Jiankan Group Co.,Ltd. Address before: 050031 No. 58 Southern China Avenue, Shijiazhuang, Hebei Patentee before: HEBEI CONSTRUCTION AND INVESTIGATION RESEARCH INSTITUTE Co.,Ltd. |