CN107938650A - The method for filling and treating of underground karst cavity - Google Patents
The method for filling and treating of underground karst cavity Download PDFInfo
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- CN107938650A CN107938650A CN201711405407.2A CN201711405407A CN107938650A CN 107938650 A CN107938650 A CN 107938650A CN 201711405407 A CN201711405407 A CN 201711405407A CN 107938650 A CN107938650 A CN 107938650A
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000005553 drilling Methods 0.000 claims abstract description 60
- 239000004927 clay Substances 0.000 claims abstract description 35
- 238000010276 construction Methods 0.000 claims abstract description 19
- 239000004568 cement Substances 0.000 claims abstract description 15
- 238000004537 pulping Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 16
- 239000000945 filler Substances 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 13
- 239000004567 concrete Substances 0.000 claims description 9
- 230000003020 moisturizing effect Effects 0.000 claims description 9
- 238000004080 punching Methods 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 5
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 4
- 230000006837 decompression Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 6
- 238000013459 approach Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 92
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000012545 processing Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000000368 destabilizing effect Effects 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention relates to a kind of method for filling and treating of underground karst cavity, during drilling construction, judge the type of the solution cavity, corresponding method is selected according to the type of the solution cavity, method for small-sized solution cavity using backfill clay drilling Gu Bi, hole is blocked up using slabstone clay for medium-sized solution cavity and builds wall approach, slabstone soil cement pulping method is used for large-scale solution cavity.The present invention is different for different types of karst cave treatment method, is not only advantageous to save material, and can fast and effectively handle solution cavity, shortens construction period, improves construction efficiency.
Description
Technical field
The present invention relates to the technical field of underground karst cavity processing, a kind of method for filling and treating of underground karst cavity is referred in particular to.
Background technology
Solution cavity is the ground that dissolubility rock stratum is acted on and formed by chemical action and mechanical damage by surface water and groundwater
Lower corrosion phenomenon, the geological sites can influence stability and the mechanics distribution of its peripheral rock.Usual solution cavity is located at karst strata
In, and the upper strata of karst strata is silty clay, basic unit is weak weathering ash rock stratum, therefore is easily formed erodible arch cave.
During pile foundation construction, it is underground concealed engineering to be excavated due to pile foundation, can not avoid meeting solution cavity sometimes, by
Easily there is collapse hole phenomenon in the complexity of Karst Cave Formation and the Unpredictability of underground karst cavity form size, work progress,
Cause the dangerous and destabilizing factor of engineering structure to increase, construction technology is become complicated, directly affects whole engineering
Uncertain and risk.
In order to overcome the above problem, Chinese invention patent（CN104278667A）Disclose at a kind of filling of underground karst cavity
Reason method, its step include：Geological mapping, collapse hole protection, drilling, bore flushing, to prepare bubble composite soil, slip casting operation above-mentioned
Raw material of the utilizing works waste soil as bubble composite soil, slip casting operation are by carrying out filling filling to the borderline drilling of solution cavity
Slurry, then mider hole grouting is carried out, spill-over rear lift tube, although can be filled to solution cavity, since solution cavity is in the big of stratum
There is difference in small, position, if above-mentioned processing method is used to all solution cavities of discovery in drilling process, not only bad for section
Timely handle solution cavity, is likely to result in the waste of slurries, extends construction period, surface subsidence can be directly resulted in when serious,
The accidents such as landslide.
The content of the invention
For this reason, the technical problems to be solved by the invention are to overcome in the prior art to the method for karst cave treatment not science
The problem of so as to provide it is a kind of avoid slurries waste, shorten construction period underground karst cavity method for filling and treating.
In order to solve the above technical problems, a kind of method for filling and treating of underground karst cavity of the present invention, includes the following steps：Step
Rapid S1：During drilling construction, the type of the solution cavity is judged, if the height of single solution cavity is less than the first specified altitude assignment or multiple
The height of solution cavity is respectively less than first specified altitude assignment and spacing distance is also greater than first specified altitude assignment, then enters step
S2；If the height of single solution cavity is between first specified altitude assignment and the second specified altitude assignment or multiple solution cavities add up and reach described
More than first specified altitude assignment, then enter step S3；If the height of single solution cavity is more than second specified altitude assignment or multiple solution cavities
It is cumulative to reach more than second specified altitude assignment, then enter step S4；Step S2：When drilling through at the top of the solution cavity, first mend
Water, then by clay input in the borehole, using the method redrilling of decompression slow-motion, blocks solution cavity by punching and makes again
Slurry；If spillage again, according to the method described above, backfill drilling repeatedly；Step S3：When drilling through at the top of the solution cavity, slurry is first mended
Moisturizing, then filler that slabstone and clay are mixed to composition in proportion squeeze into the solution cavity inner wall in a manner of pressurizeing, until
Mud face in drilling stops declining, and continues pressurization after slowly rising and is crept into, the filler of input is extruded, works as mud
After starching leakage phenomena stopping, continuing to creep into；Step S4：When drilling through at the top of the solution cavity, mud is first mended, at the same setting is heavy
The cement of amount is thrown into, and thick clay and slabstone mixture are then put into hole, drilling is re-started after the stopping of spillage phenomenon；
Step S5：Drilling extremely design stake bottom absolute altitude.
In one embodiment of the invention, in the step S2, when clay is put into the borehole, backfill height is more than
First specified altitude assignment.
In one embodiment of the invention, first specified altitude assignment is 2m, and second specified altitude assignment is 4m.
In one embodiment of the invention, in the step S3, when drilling through at the top of the solution cavity, first mend slurry and mend
Water, and increase the clay quantity in mud, then by slabstone and clay with 3:The filler of 7 composition of proportions squeezes into the solution cavity
Inner wall.
In one embodiment of the invention, it is described when continuing drilling, if collapse hole again after same intake transformation, then put into
Bagged cement is launched while clay in batches, and cement amount is no less than regulation bag number to backfill every meter of depth.
In one embodiment of the invention, in the step S4, the input amount of the thickness clay and slabstone mixture
More than filling to solution cavity top setpoint distance.
In one embodiment of the invention, when re-starting drilling, using pressuring method, make brill hammer crushing cement, stick
Soil and slabstone mixture, and squeeze into the solution cavity inner wall.
In one embodiment of the invention, during the drilling, after Upper Plate of Karst Cave is punctured, mud balance is increased, it is to be drilled
To solution cavity bottom plate, into hole, pouring underwater concrete is to more than setpoint distance at the top of the solution cavity.
In one embodiment of the invention, after the intensity of the concrete reaches prescribed strength, creep into again.
In one embodiment of the invention, in the step S1, during drilling construction, the solution cavity is punctured in drilling
Before top, using the method for slow-motion drilling, gradually hole is pushed up and is punctured.
The above technical solution of the present invention has the following advantages over the prior art：
The method for filling and treating of underground karst cavity of the present invention, solution cavity is divided into：Small-sized solution cavity, medium-sized solution cavity and large-scale molten
Hole, it is different for different types of karst cave treatment method in the construction process, it is not only advantageous to save material, and can be quick
Effective processing solution cavity, shortens construction period, improves construction efficiency.
Brief description of the drawings
In order to make the content of the present invention more clearly understood, the specific embodiment below according to the present invention and combination
Attached drawing, the present invention is described in further detail, wherein
Fig. 1 is the method for filling and treating flow chart of underground karst cavity of the present invention.
Embodiment
As shown in Figure 1, the present embodiment provides a kind of method for filling and treating of underground karst cavity, include the following steps：Step S1：
During drilling construction, the type of the solution cavity is judged, if the height of single solution cavity is less than the first specified altitude assignment or multiple solution cavities
Height be respectively less than first specified altitude assignment and spacing distance is also greater than first specified altitude assignment, then enter step S2；If
The height of single solution cavity is between first specified altitude assignment and the second specified altitude assignment or multiple solution cavities add up and reach described first
More than specified altitude assignment, then enter step S3；If the height of single solution cavity is more than second specified altitude assignment or multiple solution cavities add up
Reach more than second specified altitude assignment, then enter step S4；Step S2：When drilling through at the top of the solution cavity, first moisturizing, so
Afterwards by clay input in the borehole, using the method redrilling of decompression slow-motion, solution cavity and again pulping are blocked by punching；If
Spillage again, according to the method described above, backfill drilling repeatedly；Step S3：When drilling through at the top of the solution cavity, slurry moisturizing is first mended,
Then the filler for slabstone and clay being mixed to composition in proportion squeezes into the solution cavity inner wall in a manner of pressurizeing, until in drilling
Mud face stop declining, continue pressurization after slowly rising and crept into, the filler of input is extruded, when mud is missed
After phenomenon stops, continuing to creep into；Step S4：When drilling through at the top of the solution cavity, mud is first mended, while by the water of setting weight
Mud is thrown into, and thick clay and slabstone mixture are then put into hole, drilling is re-started after the stopping of spillage phenomenon；Step
S5：Drilling extremely design stake bottom absolute altitude.
The method for filling and treating of underground karst cavity described in the present embodiment, in the step S1, during drilling construction, judges institute
The type of solution cavity is stated, if the height of single solution cavity is less than the first specified altitude assignment or the height of multiple solution cavities is respectively less than first finger
Determine height and spacing distance is also greater than first specified altitude assignment, it is small-sized solution cavity to judge the solution cavity, then enters step S2；If
The height of single solution cavity is between first specified altitude assignment and the second specified altitude assignment or multiple solution cavities add up and reach described first
More than specified altitude assignment, judge that the solution cavity for neutral solution cavity, then enters step S3；If the height of single solution cavity is more than described second
Specified altitude assignment or multiple solution cavities, which add up, to be reached more than second specified altitude assignment, and it is large-scale solution cavity to judge the solution cavity, then enters
Step S4；It is first when mud face declines rapidly when drilling through at the top of the solution cavity for small-sized solution cavity in the step S2
Moisturizing, then by clay input in the borehole, using the method redrilling of decompression slow-motion, solution cavity and again is blocked by punching
Pulping, since the solution cavity is smaller, solution cavity, positive effect can be quickly handled by mending slurry；If spillage again, according to above-mentioned side
Method, repeatedly backfill drilling；In the step S3, for medium-sized solution cavity, when drilling through at the top of the solution cavity, under mud is rapid
Drop, since the solution cavity volume is larger at this time, first mends slurry moisturizing, then slabstone and clay is mixed to the filler of composition in proportion
The solution cavity inner wall is squeezed into a manner of pressurization, is conducive to play retaining wall effect, avoids collapse hole, until the mud face in drilling is stopped
Only decline, continue pressurization after slowly rising and crept into, the filler of input is extruded, when mud leakage phenomena stops
Afterwards, continue to creep into；In the step S4, for large-scale solution cavity, when drilling through at the top of the solution cavity, mud is first mended, at the same time will
The cement of setting weight is thrown into, and preliminary treatment is carried out to the solution cavity, and thick clay and slabstone mixture are then put into hole,
Drilling is re-started after the stopping of spillage phenomenon；In the step S5, continue drilling to design stake bottom absolute altitude, due to work progress
In it is different for different types of karst cave treatment method, be not only advantageous to save material, and can fast and effectively handle molten
Hole, shortens construction period, improves construction efficiency.
In the step S2, the processing for small-sized solution cavity, using the solid wall approach of backfill clay drilling.Specifically, by clay
When putting into the borehole, backfill height is more than first specified altitude assignment, so as to advantageously ensure that the quality of construction.Drilling
Cheng Zhong, occurs fermentation product collapse hole or mud quickly flows away, and the former mud face that drills decrease beyond first specified altitude assignment, then shows
The solution cavity that former advance exploration does not disclose is broken up in boring procedure and has formd medium-sized and above solution cavity.
In the step S3, the processing for medium-sized solution cavity, blocks up hole using slabstone clay and builds wall approach.Specifically, drilling
To before the top of breakdown hole, drilled using slow-motion, gradually hole is pushed up and is punctured, prevent card hammer or inclined hole, once find that mud face is quick
Decline, water level in borehole changes greatly, slip consistency, color change or rate of penetration substantially accelerate again unbiased hole phenomenon when,
Show that having passed through solution cavity jacking enters solution cavity.Slurry moisturizing is quickly mended using High-power Mud Pump at this time, while carries tup in time, is prevented
Hammer is buried, and increases the clay quantity in mud, improves mud density, and the control of mud viscosity is in 19-28s, then by slabstone
With clay with 3:The filler of 7 composition of proportions squeezes into the solution cavity inner wall, is conducive to play retaining wall effect, avoids collapse hole.Together
When input amount by the solution cavity to highly adding more than set a distance, repeatedly launched on a small quantity, to ensure construction quality.In addition,
By the way of pressurization, allow and bore hammer crushing clay and slabstone and squeeze into the effect that solution cavity inner wall plays retaining wall, when the mud in hole
Face stops declining, and when slowly rising, can pressurize drilling, and the filler of input is extruded, it is ensured that the solution cavity is blocked.
It is described when continuing drilling, if collapse hole again after same intake transformation, then put into clay while, launch bagged cement, and water in batches
Mud amount is no less than regulation bag number to backfill every meter of depth, and specifically, every meter of cement amount backfill depth is thrown no less than 3 bags with whole bag
Enter.After mud leakage phenomena all disappears, normal drilling is pierced, so drilling is smoothly passed through solution cavity repeatedly.
In the step S4, the processing for large-scale solution cavity uses slabstone soil cement pulping method.In particular, it was found that spillage
Afterwards, show to have perforated, supplement mud into hole to prevent hole wall collapse using slush pump immediately, meanwhile, bag is thrown into hole immediately
Fill cement 5t or so；Then, 3-5m thickness clay, slabstone mixture are put into hole（Soil-rock ratio 1:1）, with filling to the solution cavity
More than top setpoint distance, specifically, 3m is no less than with filling to solution cavity top；Brill is re-started after the stopping of spillage phenomenon
Into using pressuring method, making brill hammer crushing cement, clay and slabstone mixture, and squeeze into the solution cavity inner wall and play retaining wall and make
With.
For the large-scale solution cavity of emptying aperture, filler to have the large-scale solution cavity such as water burst in stream modeling shape solution cavity, solution cavity, because of its mud
Lateral pressure is larger, self-stability is poor, can use the perfusion secondary pore-forming Drilling Method of concrete dado.Specifically, install above-mentioned large-scale molten
After the punching of hole, after Upper Plate of Karst Cave is punctured, mud balance is increased, water burst is prevented, gushes slurry dilution mud, cause mud off ability
Decline, hole wall collapse occurs；After being drilled into the solution cavity bottom plate, without borehole cleaning, into hole, pouring underwater concrete is to the solution cavity
More than bottom setpoint distance, specifically, into hole, pouring underwater concrete is to more than 1m at the top of the solution cavity；Treat the concrete
Intensity reach prescribed strength after, specifically, after concrete reaches 70% intensity, creep into again.
In the present embodiment, first specified altitude assignment is set as 2m, and second specified altitude assignment is set as 4m.Constructing
Cheng Zhong, hole before drilling punctures the solution cavity top, using the method for slow-motion drilling, gradually pushed up and punctured, prevent card from hammering into shape；And
It is with hammer is bored that the stake holes repairing at Upper Plate of Karst Cave, bottom plate is round and smooth after puncturing Upper Plate of Karst Cave, bottom plate, to prevent bit freezing.
Obviously, the above embodiments are merely examples for clarifying the description, not to the restriction of embodiment.For
For those of ordinary skill in the art, other multi-form changes can also be made on the basis of the above description or are become
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change or change thus extended out
Among moving still in the protection domain of the invention.
Claims (10)
1. a kind of method for filling and treating of underground karst cavity, it is characterised in that include the following steps：
Step S1：During drilling construction, the type of the solution cavity is judged, if the height of single solution cavity is less than the first specified altitude assignment
Or the height of multiple solution cavities is respectively less than first specified altitude assignment and spacing distance is also greater than first specified altitude assignment, then enters
Step S2；If the height of single solution cavity is between first specified altitude assignment and the second specified altitude assignment or multiple solution cavities add up and reach
More than first specified altitude assignment, then enter step S3；If the height of single solution cavity is more than second specified altitude assignment or multiple
Solution cavity, which adds up, to be reached more than second specified altitude assignment, then enters step S4；
Step S2：When drilling through at the top of the solution cavity, first moisturizing, then by clay input in the borehole, using decompression slow-motion
Method redrilling, solution cavity and again pulping are blocked by punching；If spillage again, according to the method described above, backfill repeatedly is bored
Hole；
Step S3：When drilling through at the top of the solution cavity, slurry moisturizing is first mended, slabstone and clay are then mixed into composition in proportion
Filler squeezes into the solution cavity inner wall in a manner of pressurizeing, until the mud face in drilling stops declining, continues after slowly rising
Pressurization is crept into, and the filler of input is extruded, after mud leakage phenomena stops, continuing to creep into；
Step S4：When drilling through at the top of the solution cavity, mud is first mended, while the cement of setting weight is thrown into, then to hole
Middle input thickness clay and slabstone mixture, drilling is re-started after the stopping of spillage phenomenon；
Step S5：Drilling extremely design stake bottom absolute altitude.
2. the method for filling and treating of underground karst cavity according to claim 1, it is characterised in that：In the step S2, by clay
When putting into the borehole, backfill height is more than first specified altitude assignment.
3. the method for filling and treating of underground karst cavity according to claim 1 or claim 2, it is characterised in that：First specified altitude assignment
It is 2m, second specified altitude assignment is 4m.
4. the method for filling and treating of underground karst cavity according to claim 1, it is characterised in that：In the step S3, drilling is worn
When crossing at the top of the solution cavity, slurry moisturizing is first mended, and increases the clay quantity in mud, then by slabstone and clay with 3:7 ratio
The filler that example is formed squeezes into the solution cavity inner wall.
5. according to the method for filling and treating of the underground karst cavity of claim 1 or 4, it is characterised in that：It is described continue drilling when, if
Collapse hole again after same intake transformation, then put into clay while, launch bagged cement in batches, and cement amount is every to backfill depth
Rice is no less than regulation bag number.
6. the method for filling and treating of underground karst cavity according to claim 1, it is characterised in that：In the step S4, the thickness
The input amount of clay and slabstone mixture is more than filling to solution cavity top setpoint distance.
7. the method for filling and treating of underground karst cavity according to claim 1, it is characterised in that：When re-starting drilling, use
Pressuring method, makes brill hammer crushing cement, clay and slabstone mixture, and squeezes into the solution cavity inner wall.
8. according to the method for filling and treating of the underground karst cavity of claim 1 or 7, it is characterised in that：During the drilling, puncturing
After Upper Plate of Karst Cave, mud balance is increased, after solution cavity bottom plate is drilled into, pouring underwater concrete is set to solution cavity top into hole
It is more than set a distance.
9. the method for filling and treating of underground karst cavity according to claim 8, it is characterised in that：The intensity of the concrete reaches
After prescribed strength, creep into again.
10. the method for filling and treating of underground karst cavity according to claim 1, it is characterised in that：In the step S1, drilling is applied
During work, before drilling punctures the solution cavity top, using the method for slow-motion drilling, gradually hole is pushed up and is punctured.
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| CN108789769A (en) * | 2018-04-28 | 2018-11-13 | 中国矿业大学 | A kind of underground cavity intelligence filling system |
| CN109577313A (en) * | 2018-12-11 | 2019-04-05 | 宝钢集团新疆八钢铁有限公司 | A kind of cold region factory built-up areas grouting and reinforcing technology |
| CN109577197A (en) * | 2018-11-05 | 2019-04-05 | 中铁二十二局集团轨道工程有限公司 | A kind of construction method of thick sand bed Pile In Karst Area |
| CN110056326A (en) * | 2019-04-29 | 2019-07-26 | 中铁第四勘察设计院集团有限公司 | Hole sealing structure and implementation method for drilling with bead type solution cavity |
| CN110984120A (en) * | 2019-12-31 | 2020-04-10 | 桂林电子科技大学 | A kind of filling structure of shallow buried non-pressure water-filled karst cave and its construction method |
| CN111574183A (en) * | 2020-06-17 | 2020-08-25 | 贵州大学 | A kind of backfill material suitable for karst area and its backfill method |
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| CN110984120A (en) * | 2019-12-31 | 2020-04-10 | 桂林电子科技大学 | A kind of filling structure of shallow buried non-pressure water-filled karst cave and its construction method |
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