CN1004564B - Explosion treatment method for underwater silt soft foundation - Google Patents
Explosion treatment method for underwater silt soft foundation Download PDFInfo
- Publication number
- CN1004564B CN1004564B CN87106811.7A CN87106811A CN1004564B CN 1004564 B CN1004564 B CN 1004564B CN 87106811 A CN87106811 A CN 87106811A CN 1004564 B CN1004564 B CN 1004564B
- Authority
- CN
- China
- Prior art keywords
- soft
- soil
- under water
- treatment method
- cartridge bag
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004880 explosion Methods 0.000 title abstract description 3
- 239000002689 soil Substances 0.000 claims abstract description 25
- 239000004575 stone Substances 0.000 claims abstract description 12
- 239000002360 explosive Substances 0.000 claims abstract description 6
- 238000010276 construction Methods 0.000 claims abstract description 5
- 238000005422 blasting Methods 0.000 claims abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000004744 fabric Substances 0.000 claims description 3
- 230000000977 initiatory effect Effects 0.000 claims description 2
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A method for treating soft foundation of underwater silt features that the method of land throwing and filling and the method of controlling blasting by burying explosive in soft foundation of underwater silt are used to synchronously remove silt and fill stone. The method can be widely used for treating soft soil foundations of projects such as harbor caissons, docks, revetments, slideways, cofferdams, offshore structures and the like, and particularly relates to the explosion treatment of the soft soil foundations of the breakwaters. The method has the advantages of low construction cost, stable and reliable engineering quality and the like.
Description
The present invention relates to the method that the underwater sludge soft soil foundation is handled.Be useful for the Soft Ground of engineerings such as harbor district caisson wharf, shore protection, slideway, cofferdam and marine structures.Specially refer to the process for explosive treatment of breakwater soft foundation.
On the sludge soft ground, build breakwater, job practices commonly used is: with dredge boat the sludge soft foundation soil is removed earlier, adopted throwing waterborne to fill out for preventing to enclose to become silted up, stone in shop in foundation trench, adopt land throwing to fill out then, form the breakwater that reaches the design section requirement.This job practices mainly exists the desilting section big, and need dredge navigation channel and jackstone waterborne will be with shortcomings such as the main equipments such as dredge boat and the folk prescription cost height of dredging.
The objective of the invention is to adopt explosion method to handle the sludge soft ground, make the breakwater after accomplishing can be steady in a long-term, can reduce construction link simultaneously,, thereby reduce cost greatly without valency high jackstone waterborne and special main equipment.
The present invention is directed to the problem that prior art exists, adopted the explosive treatment method of soft foundation under water, make under water row become silted up and rockfill and finish simultaneously, therefore being known as the blast row method of rockfilling of becoming silted up.
The technology used in the present invention solution is as follows: at first adopt land throwing to fill out at the construction initiating terminal, fill out body when throwing and reach engineering design and throw raising when spending, fill out in the appropriate location of body the place ahead soft foundation soil layer embedding group's cartridge bag in throwing.Make after the blast to throw and fill out body slump forwards, the throwing of slump is filled out body and will be drained by the mud soft soil foundation of blast disturbance, throws and fills out the body slump on hardpan, forms mud blast " stone tongue " down.Can repeat then to construct according to the method described above, when reaching engine request till.
Accompanying drawing is an enforcement schematic diagram of the present invention.
Below in conjunction with accompanying drawing the present invention is introduced in detail.At first adopt land throwing to fill out in this enforcement, make to throw and fill out body and reach design and throw the raising degree, forms to throw before quick-fried as shown in drawings and fill out line (1), fill out in the soft foundation of body the place ahead the appropriate location processing in throwing then and put group cartridge bag (9).Cartridge bag (9) is to the distance (C between the quick-fried preceding mudstone intersection point (a)
1) should equal the thickness (H of 0.4～0.6 times soft foundation soil layer (6)
2); The buried depth (W) of cartridge bag (9) should equal the thickness (H of 0.45～0.55 times soft foundation soil layer (6)
2); The stone riprap width (B) of the embedding width ∑ a of group's cartridge bag (9)≤0.8 times; The embedding of group's cartridge bag (9) adopted singlely, also can adopt double.When adopting single cartridge bag, the line dose q(kilogram/rice of powder charge) should be satisfied with following relation:
Δ S is single big gun stone tonguing dipstick metering in the formula, when adopting double cartridge bag, and interior winding displacement dose q(kilogram/rice) should be satisfied with following relation:
In order to increase the embedding cartridge bag that effluxes of " stone tongue " (4) drilling depth length, in efflux the cartridge bag array pitch and be generally 3～4 meters.Outer cartridge bag line dose is 1/3～1/2 of interior row's cartridge bag line dose.Water layer on the soft foundation soil layer (5) depth of water (H
1) be generally 0.4～0.6 times of soft foundation soil thickness (H
2).
The dredge boat method that adopts in the present invention and the present construction is compared, and rockfills because of having adopted blast row to become silted up, and has both guaranteed stability of foundation, cost is reduced more than (30～60%), cancelled throwing waterborne simultaneously and filled out, filled out the expense reduction thereby make to throw, job practices is simple and easy to do.
Now introduce the embodiment that the present invention is used to groyne in conjunction with the accompanying drawings: field condition depth of water H
1=3.5, thickness of soft soil H
2=7.0 meters, the engine request dike is wide to be 9.6 meters, adopts double cloth medicine in the enforcement, cartridge bag (9) buried depth W=4.5 rice, cartridge bag (9) is 4 meters to the distance of mudstone intersection point (a), interior row's cartridge bag line dose q=49.2 kilogram/rice, in efflux 3.5 meters of cartridge bag array pitch.Executing quick-fried back " stone tongue " drilling depth amount is 3.0 meters.(2) are quick-fried back slump lines in the accompanying drawing, and (3) are to throw before quick-fried next time to fill out line, and (7) are hardpans, and (10) are the embedding points of cartridge bag next time, and (11) are that dike is vertical, and (12) are last big gun stone tongue.
Claims (9)
1, a kind of soft-soil foundation treatment method under water, at first adopt land throwing to fill out at the construction initiating terminal, when throwing is filled out body and is reached design height, fill out in the appropriate location of body the place ahead soft foundation soil layer in throwing, embedding group's cartridge bag is ignited above-mentioned cartridge bag, causes stone riprap slump forwards after the blast, weak soil is arranged, and forms the mud blast " stone tongue " down that falls within compacted layer.
2, soft-soil foundation treatment method under water according to claim 1 is characterized in that the distance (C of the embedding point of cartridge bag to stone riprap and soft foundation soil layer interface
1) equal 0.4～0.6 times soft foundation soil thickness (H
2).
3, soft-soil foundation treatment method under water according to claim 1 is characterized in that the embedding degree of depth of the blasting charge (W) equals 0.45～0.55 times soft foundation soil thickness (H
2).
4, soft-soil foundation treatment method under water according to claim 1 is characterized in that the embedding width ∑ a≤0.8B(B of the blasting charge is the stone riprap width).
5, according to claim 1 or 2,3,4 described soft-soil foundation treatment methods under water, when it is characterized in that double cloth explosive in row's cartridge bag line dose (q) should satisfy following relation:
6, according to claim 1 or 2 or 3 or 4 described soft-soil foundation treatment methods under water, cartridge bag line dose (q) should satisfy following relation when it is characterized in that single cloth explosive:
7, soft-soil foundation treatment method under water according to claim 1 is characterized in that soft subgrade soil layer (6) headwater depth (H
1) be 0.4～0.6 times soft subgrade soil layer (6) thickness (H
2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87106811.7A CN1004564B (en) | 1987-10-14 | 1987-10-14 | Explosion treatment method for underwater silt soft foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87106811.7A CN1004564B (en) | 1987-10-14 | 1987-10-14 | Explosion treatment method for underwater silt soft foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1033302A CN1033302A (en) | 1989-06-07 |
| CN1004564B true CN1004564B (en) | 1989-06-21 |
Family
ID=4815854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87106811.7A Expired CN1004564B (en) | 1987-10-14 | 1987-10-14 | Explosion treatment method for underwater silt soft foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1004564B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116006B (en) * | 2011-03-23 | 2012-08-29 | 大连市市政设计研究院有限责任公司 | Method for building sea filling embankment |
| CN102605742B (en) * | 2012-04-17 | 2014-12-10 | 北京中科力爆炸技术工程有限公司 | Method for building vertical breakwater |
| CN102635108A (en) * | 2012-05-02 | 2012-08-15 | 天津大学 | Process for treating valley silt soft foundation in mountain area by explosion method |
| CN103114558B (en) * | 2013-02-18 | 2015-06-03 | 宁波高新区围海工程技术开发有限公司 | Steep slope zone blast slit squeezing embanking method |
| CN103697774B (en) * | 2013-12-26 | 2016-08-17 | 北京中科力爆炸技术工程有限公司 | A kind of method strengthening liquefaction explosive replacement process in stress wave superimposition region |
| CN104631249B (en) * | 2015-01-05 | 2016-06-08 | 陈绍文 | Horizontal compacting mud by explosion fills out sea method of constructing roadway |
-
1987
- 1987-10-14 CN CN87106811.7A patent/CN1004564B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1033302A (en) | 1989-06-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| C13 | Decision | ||
| C14 | Grant of patent or utility model | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| C17 | Cessation of patent right |