CN205822219U - Soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of open caisson - Google Patents
Soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of open caisson Download PDFInfo
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- CN205822219U CN205822219U CN201620540154.4U CN201620540154U CN205822219U CN 205822219 U CN205822219 U CN 205822219U CN 201620540154 U CN201620540154 U CN 201620540154U CN 205822219 U CN205822219 U CN 205822219U
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- open caisson
- caisson
- cutting shoe
- pilot hole
- wall
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Abstract
The utility model discloses soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of a kind of open caisson, relate to bridge foundation construction technical field, including open caisson, open caisson includes caisson wall, one end of caisson wall is provided with cutting shoe, open caisson is provided with multiple pilot hole, pilot hole runs through top and the cutting shoe of caisson wall, immediately below the cutting shoe of open caisson, soil body underwater demolition drawing out soil equipment also includes blast area, open caisson pressure holding is on blast area, blast area is provided with blast hole, and blast hole is positioned at below cutting shoe and connects with pilot hole, and blast area is additionally provided with the explosion groove inside caisson wall.Immediately below the cutting shoe of the open caisson in this utility model, soil body underwater demolition drawing out soil equipment can avoid diving operation in blasting process, and under water cutting shoe immediately below the soil extracting efficiency of the soil body can be greatly improved.
Description
Technical field
This utility model relates to bridge foundation construction technical field, is specifically related to soil mass water immediately below the cutting shoe of a kind of open caisson
Lower explosion drawing out soil equipment.
Background technology
Open caisson, as bridge foundation structure, has the features such as high, big, the good integrity of rigidity of bearing capacity.Along with China's " band
One tunnel " enforcement of great strategic idea, China will build a collection of coastal or bridge spanning the sea, but coastal area geological conditions is general
Being gumbo layer, its buried depth of bedrock is deep, is not suitable for using multi-column pier foundation to be suitable for using well foundation.
Well foundation is it is generally required to sink in the soil layer of design, and meets resistance suffered by open caisson own wt and open caisson
The ratio i.e. subsidence factor of (including side frictional resistance and the frontal drag) requirement more than 1.15.During well sinking, if
Use drainage sinking construction (i.e. can reach anhydrous working environment in open caisson wellhole), even if running into hard soil layer, it is possible to examine
Consider the soil body below artificial directly removing cutting shoe, or use cutting shoe side artificial drillhole blasting mode, reduce its side and front
Resistance.
But when running into hard soil layer during open caisson cannot use drainage sink and sinking watching, one is cannot to use manually
Directly (or artificial drillhole blasting auxiliary) removes the soil body immediately below caisson cutting edge；Two is owing to caisson wall and cutting shoe are designed with
Certain width, the soil body (being commonly called as " soil body immediately below cutting shoe ") immediately below cutting shoe cannot use conventional subsea vertically to inhale mud equipment
Fetch earth.Above-mentioned reason causes hard soil layer below caisson cutting edge to take out difficulty maybe cannot taking out, and open caisson is at side frictional resistance and just
Under the common effect of face resistance so that well sinking difficulty maybe cannot continue to sink.
Utility model content
For defect present in prior art, the purpose of this utility model is to provide immediately below the cutting shoe of a kind of open caisson
Soil body underwater demolition drawing out soil equipment, this device uses non-drainage subsidence and when running into hard soil layer when the cutting shoe of open caisson, the side of remaining to
Just the soil body immediately below cutting shoe is taken out.
For reaching object above, this utility model adopts the technical scheme that: soil mass water immediately below the cutting shoe of a kind of open caisson
Lower explosion drawing out soil equipment, including open caisson, described open caisson includes caisson wall, and one end of described caisson wall is provided with cutting shoe, described
Open caisson is provided with multiple pilot hole, and described pilot hole runs through top and the cutting shoe of described caisson wall, the cutting shoe of described open caisson just under
Necromancer body underwater demolition drawing out soil equipment also includes blast area, and described open caisson pressure holding is on described blast area, and described blast area is provided with
Blast hole, described blast hole is positioned at below described cutting shoe and connects with described pilot hole, and described blast area is additionally provided with institute
State the explosion groove inside caisson wall.
On the basis of technique scheme, described open caisson is circular open caisson, and described pilot hole is along the circumference of described open caisson
Direction is uniformly distributed, and described pilot hole is perpendicular to the top of described caisson wall, and described explosion groove is annular.
On the basis of technique scheme, described open caisson is rectangular open caisson, and described pilot hole is equidistantly spaced, institute
State pilot hole and be perpendicular to the top of described caisson wall, and described explosion groove is straight-flanked ring.
On the basis of technique scheme, described open caisson is provided with multi-turn and is uniformly distributed along the circumferencial direction of described open caisson
Pilot hole.
On the basis of technique scheme, described open caisson is provided with multi-turn along described caisson wall end face equidistant intervals
The pilot hole arranged.
On the basis of technique scheme, described pilot hole is pre-buried pvc pipe or steel pipe in described open caisson.
On the basis of technique scheme, described open caisson also includes the partition wall being arranged on inside caisson wall, described every
Wall one end also is provided with described cutting shoe, and described partition wall also is provided with multiple described pilot hole, and the pilot hole on described partition wall runs through described
The top of partition wall and cutting shoe.
Compared with prior art, the utility model has the advantage of:
(1) soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of the open caisson in this utility model, it is in caisson wall
Multiple pilot hole is set, immediately below cutting shoe, bores blast hole by pilot hole, thus conveniently explosive-source explosive post is put by pilot hole
Enter in blast hole, it is to avoid diving operation.
(2) soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of the open caisson in this utility model, it is pressing close to open caisson well
Position inside wall is provided with explosion groove, and explosion groove defines a free free face of explosion.With conventional standing or without from
Being compared by free face explosion, fried for soil body pine, the soil body after fried pine can only be remained in original place, at this method by conventional standing
Reason cutting shoe side and the soil body of underface, poor effect and efficiency are the lowest.Without the explosion of free free face, general after soil body explosion
Form a heatable adobe sleeping platform, exploded the soil body fallen and also can only drop back into again in situ after first upthrow.And this utility model is pressing close to caisson wall
Inner side arranges explosion groove, it is possible to forming a free free face, after explosion, the soil body is not only by fried pine, also can be moved to deep trouth
In, under water cutting shoe immediately below the soil extracting efficiency of the soil body can be greatly improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of open caisson in this utility model；
Fig. 2 is the enlarged drawing in this utility model borehole blasting district；
Fig. 3 is the structural representation arranging multi-turn pilot hole and partition wall in this utility model.
In figure: 1-open caisson, 11-caisson wall, 12-cutting shoe, 13-pilot hole, 2-blast area, 21-blast hole, 22-explosion
Groove, 3-angle-table bracket, 4-geological drilling rig, 5-inhales mud equipment, 6-explosive-source explosive post, 7-partition wall.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
Shown in Figure 1, this utility model provides soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of a kind of open caisson, its
Including open caisson 1 and blast area 2, wherein open caisson 1 pressure holding is on blast area 2.
Open caisson 1 includes that caisson wall 11, one end of caisson wall 11 are provided with cutting shoe 12.Open caisson 1 is additionally provided with multiple pilot hole
13, pilot hole 13 runs through top and the cutting shoe 12 of caisson wall 11.Pilot hole 13 in this utility model is in advance at open caisson well
Pvc pipe pre-buried in wall 11 or steel pipe, it is thus possible to avoid in caisson wall 11 internal drilling.
Referring also to shown in Fig. 2, blast area 2 is provided with blast hole 21, and blast hole 21 passes pilot hole 13 by geological drilling rig 4
It is drilled to downwards, is drilled to rear blast hole 21 and connects with pilot hole 13.So just can be by the blasting charge from caisson wall by pilot hole 13
The top of 11 hangs in blast hole 21, it is not necessary to carry out diving operation.Blast area 2 is additionally provided with the explosion inside caisson wall 11
Groove 22, explosion groove 22 defines a free free face of explosion.I.e. blast area 2 in this utility model includes being positioned at cutting shoe 12 times
The hard soil layer of side and along the explosion groove 22 arranged inside caisson wall 11.After using such special construction, and the pine of routine
Moving explosion or compare without free free face explosion, having an advantage in that, conventional standing can only be by fried for soil body pine, after fried pine
The soil body remains in original place, and this method processes cutting shoe side and the soil body of underface, poor effect and efficiency are the lowest.Without freely facing sky
The explosion in face, generally forms a heatable adobe sleeping platform after soil body explosion, exploded the soil body fallen and also can only drop back in situ after first upthrow again.And this
Utility model is pressing close to arrange explosion groove 22 inside caisson wall 11, thus forms a free free face, and after explosion, the soil body is not
Only by fried pine, also can be moved in deep trouth, under water cutting shoe immediately below the soil extracting efficiency of the soil body can be greatly improved.
Open caisson 1 in this utility model can be circular open caisson or rectangular open caisson, if open caisson 1 is circular open caisson, now
Pilot hole 13 is uniformly distributed along the circumferencial direction of open caisson 1, and pilot hole 13 is perpendicular to the top of caisson wall 11, facilitates geology to bore
Machine 4 bores downwards blast hole 21.Corresponding with circular open caisson, now explosion groove 22 is annular.If open caisson 1 is rectangular open caisson, this
Time pilot hole 13 be equidistantly spaced along rectangular open caisson surrounding, and pilot hole 13 is also perpendicularly to the top of caisson wall 11,
Corresponding with rectangular open caisson, now explosion groove 22 is straight-flanked ring.
Shown in Figure 3, as a example by circular open caisson, when the thickness of caisson wall 11 is thicker, the most quick-fried in order to obtain
Broken effect, can arrange the multi-turn equally distributed pilot hole of circumferencial direction 13 along open caisson 1, in this utility model on open caisson 1
Being provided with the 2 circles equally distributed pilot hole of circumferencial direction 13 along open caisson 1, its concrete number of turns can be the most true according to practical situation
Fixed.If open caisson is rectangular open caisson, then multi-turn can be set on open caisson 1 and set along the rectangular end face equidistant intervals of caisson wall 11
The pilot hole 13 put.
Shown in Figure 3, if the size of open caisson 1 is very big, partition wall 7 is typically set inside caisson wall 11, it is heavy to increase
The rigidity of well 1.Partition wall 7 one end also is provided with cutting shoe 12, and partition wall 7 is additionally provided with multiple pilot hole 13, and the pilot hole 13 on partition wall 7 passes through
Wear top and the cutting shoe 12 of partition wall 7.Thus also can be bored downwards blast hole 21 by the pilot hole 13 on partition wall 7 and carry out explosion.
When the design thickness of caisson wall 11 or partition wall 7 is relatively thin, geological drilling rig 4 bores downwards blast hole 21 for convenience,
It is additionally provided with angle-table bracket 3 on the top of caisson wall 11 and partition wall 7, can enter with more convenient geological drilling rig 4 after angle-table bracket 3 is set
Row construction operation.
This utility model also provides for soil body underwater demolition drawing out soil equipment immediately below a kind of cutting shoe utilizing above-mentioned open caisson to be carried out
The method fetched earth, the method comprises the following steps:
S1., after open caisson 1 sinks and enters gumbo layer, inside caisson wall 11, explosion groove 22 is dug；
After open caisson 1 sinks and enters gumbo layer, installing and inhale mud equipment 5, the suction mud equipment 5 in this utility model is water
Lower vertical suction mud equipment.Use loop wheel machine as lifting appliance, utilize and inhale mud equipment 5 border excavation one inside caisson wall 11
Width about 2m, the explosion groove 22 of deep about 2m (starting at from cutting shoe 12 end), using as the free free face of explosion.
S2. on the pilot hole 13 blast area 2 below cutting shoe 12, blast hole 21 is bored；
This utility model sets up angle-table bracket 3 on caisson wall 11 top, with geological drilling rig 4 by pre-in caisson wall 11
The pilot hole 13 stayed, below cutting shoe 12, boring forms blast hole 21.Pilot hole 13 in this utility model is for be embedded in advance
Pvc pipe in caisson wall 11 or steel pipe duct, its a diameter of 130-150mm.Blast hole 21 diameter 70～90mm is advisable, hole
Deep preferably 2m (starting at from cutting shoe 12 end), along 11 weeks turn separation about 2m of caisson wall.
S3. explosive-source explosive post is put into blast hole 21；
For improving work efficiency, explosive and yellow ground blockage body can be made finished product explosive-source explosive post 6 in advance, explosive-source explosive post 6 is external diameter
The plastic tube of Φ 50～70mm.After blast hole 21 is formed, the rope made of hemp is fastened in one end of explosive-source explosive post 6, is put into by pilot hole 13
In blast hole 21, the most accurately measure the hole depth before and after explosive-source explosive post 6 is put into, it is to avoid explosive-source explosive post 6 is not transferred and put in place.This practicality
Apogee distance cutting shoe 12 minimum point at least 0.5 of the explosive-source explosive post 6 in novel～1m so that the shock wave that explosion produces is to heavy
The impact of well 1 self structure is the least.
S4. explosive-source explosive post 6 is ignited；
This utility model uses the mode that msdelayed light emission detonates, and destroys the soil body under cutting shoe 12 and throws to wellhole.In addition
Blasting circuit of the present utility model in addition to need to considering accurate quick-fried property, also need consider explosion moment open caisson 1 stress sink uniformity and
Symmetry.Therefore this utility model borehole blasting blasting circuit is with open caisson 1 wellhole center as axle, and both sides are full symmetric detonates.
S5. suction mud equipment 5 is utilized to clear up the soil in explosion back open caisson 1 wellhole.
After explosion, utilization suction mud equipment 5 is by hard plastic clay sucking-off near well downhole explosion groove 22, thus decreases cutting shoe
Reaction of bearing under 12, reaches the purpose that open caisson 1 sinks smoothly.
This utility model is not limited to above-mentioned embodiment, for those skilled in the art, not
On the premise of departing from this utility model principle, it is also possible to making some improvements and modifications, these improvements and modifications are also considered as this reality
Within novel protection domain.The content not being described in detail in this specification belongs to known to professional and technical personnel in the field
Prior art.
Claims (7)
1. a soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of open caisson, including open caisson (1), described open caisson (1) includes sinking
The well borehole wall (11), one end of described caisson wall (11) is provided with cutting shoe (12), it is characterised in that: described open caisson (1) is provided with multiple
Pilot hole (13), described pilot hole (13) runs through top and cutting shoe (12), the cutting shoe of described open caisson of described caisson wall (11)
Immediately below soil body underwater demolition drawing out soil equipment also include blast area (2), described open caisson (1) pressure holding on described blast area (2), institute
State blast area (2) and be provided with blast hole (21), described blast hole (21) be positioned at described cutting shoe (12) lower section and with described pilot hole
(13) connect, and described blast area (2) are additionally provided with the explosion groove (22) of described caisson wall (11) inner side.
2. soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of open caisson as claimed in claim 1, it is characterised in that: described heavy
Well (1) is circular open caisson, and described pilot hole (13) is uniformly distributed along the circumferencial direction of described open caisson (1), described pilot hole (13)
It is perpendicular to the top of described caisson wall (11), and described explosion groove (22) is annular.
3. soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of open caisson as claimed in claim 1, it is characterised in that: described heavy
Well (1) is rectangular open caisson, and described pilot hole (13) is equidistantly spaced along described caisson wall (11) end face, described pilot hole
(13) it is perpendicular to the top of described caisson wall (11), and described explosion groove (22) is straight-flanked ring.
4. soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of open caisson as claimed in claim 2, it is characterised in that: described heavy
Well (1) is provided with the multi-turn equally distributed pilot hole of the circumferencial direction (13) along described open caisson (1).
5. soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of open caisson as claimed in claim 3, it is characterised in that: described heavy
Well (1) is provided with the pilot hole (13) that multi-turn is equidistantly spaced along described caisson wall (11) end face.
6. soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of open caisson as claimed in claim 1, it is characterised in that lead described in:
It is pre-buried pvc pipe or steel pipe in described open caisson (1) to hole (13).
7. soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of open caisson as claimed in claim 1, it is characterised in that: described heavy
Well (1) also includes the partition wall (7) being arranged on caisson wall (11) inner side, and described partition wall (7) one end also is provided with described cutting shoe (12),
Described partition wall (7) also is provided with multiple described pilot hole (13), and the pilot hole (13) on described partition wall (7) runs through described partition wall (7)
Top and cutting shoe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620540154.4U CN205822219U (en) | 2016-06-06 | 2016-06-06 | Soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of open caisson |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620540154.4U CN205822219U (en) | 2016-06-06 | 2016-06-06 | Soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of open caisson |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205822219U true CN205822219U (en) | 2016-12-21 |
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ID=57569191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620540154.4U Active CN205822219U (en) | 2016-06-06 | 2016-06-06 | Soil body underwater demolition drawing out soil equipment immediately below the cutting shoe of open caisson |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205822219U (en) |
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2016
- 2016-06-06 CN CN201620540154.4U patent/CN205822219U/en active Active
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| GR01 | Patent grant |