CN110306571A - A kind of cutting excavation construction method - Google Patents
A kind of cutting excavation construction method Download PDFInfo
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- CN110306571A CN110306571A CN201910596495.1A CN201910596495A CN110306571A CN 110306571 A CN110306571 A CN 110306571A CN 201910596495 A CN201910596495 A CN 201910596495A CN 110306571 A CN110306571 A CN 110306571A
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- layer
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- side slope
- excavation
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- 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
- E02D17/20—Securing of slopes or inclines
- E02D17/202—Securing of slopes or inclines with flexible securing means
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
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- Structural Engineering (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)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The present invention relates to a kind of cutting excavation construction methods, which comprises the following steps: step S1: excavating intercepting ditch and gutter；Step S2: clear table；Step S3: surveying and locating；Step S4: cutting excavation and side slope protection construction.The present invention solves the problems, such as that existing excavation construction method is bad by excavation step by step from inside to outside from top to bottom；By using new multistage protection structure, solve the problems, such as that safeguard structure is bad to the protection of falling rocks.
Description
Technical field
The present invention relates to a kind of cutting excavation construction methods.
Background technique
Existing cutting be easy to cause falling rocks in excavation construction, and falling rocks causes dangerous meeting to the runway of lower section.It is existing
Excavation construction method and safeguard structure are bad to the protection of falling rocks.
Summary of the invention
Present invention seek to address that the above problem, provides a kind of cutting excavation construction method, solves existing excavation and apply
The bad problem of the protection of work method and safeguard structure to falling rocks.
A kind of cutting excavation construction method, which comprises the following steps:
Step S1: intercepting ditch and gutter are excavated；
Step S2: clear table: manually cooperating excavator, bull-dozer and loading machine to carry out clear table on roadbed in works scope,
And the surface soil of removing is transported to designated place and concentrated and is stacked, it is used as later period place second ploughing or backfill planting soil；
Step S3: surveying and locating: according to the original ground absolute altitude of repetition measurement, according to the pile No. spacing in cross section on design drawing into
The excavation position on middle stake, skirt piles, stage for heaping debris and cutting top is made in row setting-out, keeps tracking measurement, it is ensured that side slope disposal molding
And meet design and code requirement；
Step S4: cutting excavation and side slope protection construction.
Preferably, step S4 the following steps are included:
Step S41: cutting is divided into first layer, the second layer, third layer and the 4th layer from top to bottom, at first layer side slope
Three-level protection is installed, second level protection is installed at third layer side slope, second level protection is installed at the 4th layer of side slope, in runway
Primary protection is installed on the outside of kerbstone；
Step S42: upper layer and first layer inside lower layer inside first layer, upper layer inside first layer are successively excavated from top to bottom
It is to excavate from inside to outside with lower layer inside first layer, then removes the three-level protection at first layer side slope, three-level is protected and is moved
It moves and is installed at second layer side slope, excavate first layer side slope from outside to inside；
Step S43: upper layer and second layer inside lower layer inside the second layer are successively excavated from top to bottom, then removes the second layer
Three-level protection at side slope, successively excavates side slope and second layer slope on the second layer from top to bottom, upper layer inside the second layer, the
Side slope and second layer slope are to excavate from inside to outside in two layers of internal lower layer, the second layer；
Step S44: upper layer and third layer inside lower layer inside third layer are successively excavated from top to bottom, then removes third layer
Second level protection at side slope, successively excavates side slope and third layer slope in third layer from top to bottom, upper layer inside third layer, the
Side slope and third layer slope are to excavate from inside to outside in three layers of internal lower layer, third layer；
Step S45: the 4th layer of internal upper layer and the 4th layer of internal lower layer are successively excavated from top to bottom, then removes the 4th layer
Second level protection at side slope, successively excavates the 4th layer of upper side slope and the 4th layer of slope from top to bottom, the 4th layer of internal upper layer, the
Four layers of internal lower layer, the 4th layer of upper side slope and the 4th layer of slope are to excavate from inside to outside；
If the height of cutting is higher, new excavation layer can be increased, the sequence of excavation such as step S45 of new excavation layer,
And it is protected using second level.
Step S46: primary protection is removed.
Preferably, the primary protection includes the first earth anchor reinforcing bar, I-steel, the first diagonal brace, the first bamboo springboard and steel plate,
The I-steel two sides are affixed with the first earth anchor reinforcing bar respectively, in the first earth anchor reinforcing bar insertion ground and are fixedly connected with the ground,
The I-steel and the first diagonal brace are affixed, and first diagonal brace is inserted into gutter and contacts with the bottom surface of gutter, the I-shaped
It is fixedly installed with the first bamboo springboard on the outside of steel, is fixedly installed with steel plate on the inside of the I-steel.
Preferably, the second level protection includes pedestal, steel column, ring network, lower supporting rope, upper supporting rope, pull-up anchor line, spiral shell
Revolve ground pile and foundation bolt anchor pole, the foundation bolt anchor pole passes through pedestal and fixes pedestal and concrete layer, the pedestal and
Steel column is hinged, affixed with pull-up anchor line above the steel column, and the other end of the pull-up anchor line is detachably connected with spiral ground pile,
The spiral ground pile is detachably connected with ground, and the top of each steel column is connected by upper supporting rope, and the bottom end of each steel column is logical
Supporting rope connection is crossed down, is laid between the upper supporting rope and lower supporting rope and ring network is installed.
Preferably, three-level protection includes third earth anchor reinforcing bar, steel pipe, third diagonal brace and third bamboo springboard, and described the
In three earth anchor reinforcing bars insertion ground and it is fixedly connected with the ground, the third earth anchor reinforcing bar.
Preferably, it is formed with installation cavity inside the spiral ground pile, the hydraulic cylinder is in installation cavity and and spiral ground pile
It is affixed, piston is installed, the piston is slidably connected with hydraulic cylinder, and the piston and piston rod are affixed, institute in the hydraulic cylinder
Piston rod is stated across hydraulic cylinder and being slidably connected with hydraulic cylinder, the piston rod top end is connected with mounting ring, outside the piston rod
Side is set with spring, and the spring one end is fixed relative to the fixed other end of hydraulic cylinder relative to piston rod, the piston installation
There are the first one-way cock and second one-way valve door, hydraulic oil flows downward from second one-way valve door when the piston upwards,
Hydraulic oil when piston moves downward is flowed up from the first one-way cock.
Preferably, the piston rod is formed with mounting portion, the spring one end and the hydraulic cylinder contact other end and mounting portion
Contact, the hydraulic inside wall of cylinder are formed with retention bead.
Preferably, outermost two steel columns are affixed with layback anchor line respectively, the other end and side anchor of the layback anchor line
Firmware is affixed, and the anchors are fixedly connected with the ground, and the part steel column of inside is reinforced with centre draws anchor line affixed, and the centre adds
Admittedly drawing the other end of anchor line and intermediate anchor part affixed, the intermediate anchor part is fixedly connected with the ground, and the upper supporting rope is equipped with
Pressure-reducing ring, the pull-up anchor line are equipped with pressure-reducing ring.
Preferably, when cutting is Stone Cutting, using static blasting cooperation hydraulic breaking hammer construction.Splitting machine construction
Before, hidden hole drilling jewel hole is first used, jewel hole array pitch is 120cm, pitch-row 120cm, hole depth 150cm, diameter 110mm.To rock stratum
After splitting, breakup is carried out using hydraulic breaking hammer, then be transported to specified region with digging machine entrucking, complete the entire cutting cubic meter of stone and open
Excavation construction；
Every grade of Stone Cutting excavate before surveying setting-out, the excavation line of this grade and every layer of excavation leg wire of slope are released, in construction
Add quartering hammer layering broken using mechanical disintegration machine rock stratum first, sillar is removed in excavator cooperation, according to design grade of side slope,
Step and cutting absolute altitude are crushed, and side slope surface position is reserved 20-30cm and is not crushed, and are repaired using hand fit's digging machine quartering hammer
Whole slope surface.Platform should be noted that the control of absolute altitude, the gradient and width when modifying, be controlled in strict accordance with layout design；
Every 3~the 4m of excavation face height should once be modified in excavator operation altitude range to slope surface is excavated, by setting
Ratio of slope, linear is counted, is manually carried out using mechanical engagement, while excavation slope is checked using total station, to ensure out
It digs slope surface not owe to dig not backbreak, berm width meets design drawing requirement.Site operation technical staff should be equipped with slope than frame, tape measure
Deng checking at any time excavation slope, to instruct mechanical operation member operation.
Preferably, it when cutting is square cutting, is excavated using digging machine, operation can be completed in dumper truck transport, excavates
Before carry out pumping equipment.
The present invention has the advantage that solving existing excavation by excavation step by step from inside to outside from top to bottom
The bad problem of construction method；By using new multistage protection structure, it is bad to the protection of falling rocks to solve safeguard structure
Problem.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described.It should be evident that the accompanying drawings in the following description is only this
A kind of embodiment of invention for those of ordinary skill in the art without creative efforts, can be with
It is extended according to the attached drawing of offer and obtains other implementation attached drawings.
Fig. 1: structural schematic diagram of the invention；
Fig. 2: the side structure schematic view of primary protection of the present invention；
Fig. 3: the overlooking structure diagram of primary protection of the present invention；
Fig. 4: the schematic view of the front view of second level protection of the present invention；
Fig. 5: the overlooking structure diagram of second level protection of the present invention；
Fig. 6: the side structure schematic view of second level protection of the present invention；
Fig. 7: the structural schematic diagram of spiral ground pile of the present invention；
Fig. 8: partial enlargement structural representation of the invention；
Fig. 9: the side structure schematic view of three-level protection of the present invention；
Figure 10: the schematic view of the front view of three-level protection of the present invention；
Specific embodiment
The invention will be further described with example with reference to the accompanying drawing:
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
It, can also be indirectly connected through an intermediary to be to be connected directly.It for the ordinary skill in the art, can be specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
Embodiment one:
As shown in Fig. 1 to Fig. 5, a kind of cutting excavation construction method is present embodiments provided, which is characterized in that including following
Step:
Step S1: intercepting ditch 21 and gutter are excavated；
Step S2: clear table: manually cooperating excavator, bull-dozer and loading machine to carry out clear table on roadbed in works scope,
And the surface soil of removing is transported to designated place and concentrated and is stacked, it is used as later period place second ploughing or backfill planting soil；
Step S3: surveying and locating: according to the original ground absolute altitude of repetition measurement, according to the pile No. spacing in cross section on design drawing into
The excavation position on middle stake, skirt piles, stage for heaping debris and cutting top is made in row setting-out, keeps tracking measurement, it is ensured that side slope disposal molding
And meet design and code requirement；
Step S4: cutting excavation and side slope protection construction.
Step S5: slope purpose monitoring: side slope protection construction before need setting displacement monitoring stake, side slope deformation, epitope
Shifting is monitored.Monitor stake and 2 sections be set in each construction section, section is longer or side slope crushing rock formation and stratification development at can
Appropriate to increase section, each section is arranged 3 displacement monitoring stakes, is respectively arranged at side slope top of the slope, platform and slope foot.Displacement prison
Pile is concrete prefabricated using C15, having a size of 0.2*0.2*0.8m, the embedded steel nail gauge head in centre.
Preferably, step S4 the following steps are included:
Step S41: cutting is divided into first layer, the second layer, third layer and the 4th layer from top to bottom, at first layer side slope
Three-level protection 33 is installed, second level protection 33 is installed at third layer side slope, second level protection 32 is installed at the 4th layer of side slope, is expert at
Primary protection 31 is installed on the outside of the kerbstone in lane；
Step S42: successively excavating inside first layer lower layer 2 inside upper layer 1 and first layer from top to bottom, on first layer inside
Lower layer 2 is to excavate from inside to outside inside layer 1 and first layer, the three-level protection 33 at first layer side slope is then removed, by three-level
Protection 33 is mobile and is installed at second layer side slope, excavates first layer side slope 3 from outside to inside；
Step S43: upper layer 4 and second layer inside lower layer 5 inside the second layer are successively excavated from top to bottom, then removes second
Three-level protection 33 at layer side slope, successively excavates side slope 6 and second layer slope 7 on the second layer, inside the second layer from top to bottom
Upper layer 4, lower layer 5 inside the second layer, side slope 6 and second layer slope 7 are to excavate from inside to outside on the second layer；
Step S44: upper layer 8 and third layer inside lower layer 9 inside third layer are successively excavated from top to bottom, then removes third
Second level protection 32 at layer side slope, successively excavates side slope 10 and third layer slope 11 in third layer, in third layer from top to bottom
Portion upper layer 8, lower layer 9 inside third layer, side slope 10 and third layer slope 11 are to excavate from inside to outside in third layer；
Step S45: successively excavating the 4th layer of internal upper layer 12 and the 4th layer of internal lower layer 13 from top to bottom, then removes the
Second level protection 32 at four layers of side slope, successively excavates the 4th layer of upper side slope 14 and the 4th layer of slope 15 from top to bottom, and the 4th layer
Internal upper layer 12, the 4th layer of internal lower layer 13, the 4th layer of upper side slope 14 and the 4th layer of slope 15 are to excavate from inside to outside；
Step S46: primary protection 31 is removed.
Preferably, the primary protection 31 includes the first earth anchor reinforcing bar 311, I-steel 312, the first diagonal brace 313, the first bamboo
Springboard 314 and steel plate 315,312 two sides of I-steel are affixed with the first earth anchor reinforcing bar 311 respectively, the first earth anchor reinforcing bar
It in 311 insertion ground and is fixedly connected with the ground, the I-steel 312 and the first diagonal brace 313 are affixed, and first diagonal brace 313 is inserted into
It is contacted into gutter 22 and with the bottom surface of gutter 22, the first bamboo springboard 314 is fixedly installed on the outside of the I-steel 312, it is described
Steel plate 315 is fixedly installed on the inside of I-steel 312.
Preferably, second level protection 32 include pedestal 1, steel column 2, ring network 3, lower supporting rope 21, upper supporting rope 22, on
Anchor line 23, spiral ground pile 4 and foundation bolt anchor pole 11 are drawn, the foundation bolt anchor pole 11 passes through pedestal 1 for pedestal 1 and concrete
Layer 12 is fixed, and the pedestal 1 and steel column 2 are hinged, and 2 top of steel column and pull-up anchor line 23 are affixed, the pull-up anchor line 23
The other end is detachably connected with spiral ground pile 4, and the spiral ground pile 4 is detachably connected with ground, and the top of each steel column 2 passes through
Upper supporting rope 22 connects, and the bottom end of each steel column 2 is connected by lower supporting rope 21, the upper supporting rope 22 and lower supporting rope 21 it
Between be laid with ring network 3 is installed.
Preferably, the three-level protection 33 includes third earth anchor reinforcing bar 331, steel pipe 332, third diagonal brace 333 and third bamboo
Springboard 334, the third earth anchor reinforcing bar 331 are inserted into ground and are fixedly connected with the ground, the third earth anchor reinforcing bar 331.
Preferably, installation cavity 3241 is formed with inside the spiral ground pile 324, the hydraulic cylinder 327 is in installation cavity 3241
In and it is affixed with spiral ground pile 324, piston 329 is installed, the piston 329 is slided with hydraulic cylinder 327 in the hydraulic cylinder 327
Connection, the piston 329 and piston rod 328 are affixed, and the piston rod 328, which passes through hydraulic cylinder 327 and slides with hydraulic cylinder 327, to be connected
It connects, 328 top of piston rod is connected with mounting ring 3282, and 328 outer sheath of piston rod is equipped with spring 3210, the spring
3210 one end are fixed relative to piston rod 328 relative to the fixed other end of hydraulic cylinder 327, and it is single that the piston 329 is equipped with first
To valve 3291 and second one-way valve door 3292, when the piston 329 moves upwards hydraulic oil from second one-way valve door 3292 to
Lower flowing, hydraulic oil is flowed up from the first one-way cock 3291 when the piston 329 moves downward.
Preferably, the piston rod 328 is formed with mounting portion 3281, and described 3210 one end of spring is contacted with hydraulic cylinder 327
The other end is contacted with mounting portion 3281, and 327 inner wall of hydraulic cylinder is formed with retention bead 3271.
Preferably, outermost two steel columns 322 are affixed with layback anchor line 3225 respectively, the layback anchor line 3225 it is another
One end and anchors 325 are affixed, and the anchors 325 are fixedly connected with the ground, and the part steel column 322 of inside and intermediate reinforce are drawn
Anchor line 3224 is affixed, and intermediate reinforce draws the other end of anchor line 3224 and intermediate anchor part 326 affixed, the intermediate anchor part
326 are fixedly connected with the ground, and the upper supporting rope 3222 is equipped with pressure-reducing ring, and the pull-up anchor line 3223 is equipped with pressure-reducing ring.
In second level protection 32, when rock, which falls, strikes ring network 323, steel column 322, which can be hit, generates rotation, thus
Pull pull-up anchor line 3223.It pulls up anchor line 3223 and mounting ring 3282 is fixed, to pull up piston rod 328.Piston rod 328
Stress moves upwards, compressed spring 3210.The hydraulic fluid pressure of 329 top of piston increases, more than second one-way valve door 3292
Cracking pressure, hydraulic oil flow downward and spring 3210 together cushion impact forces.After rock is static or after people cleans up rock,
The pulling force that piston rod 328 is subject to reduces, and spring 3210 pushes piston rod and piston 329 to move downward, hydraulic above piston 329
Oil pressure increases, and more than the cracking pressure of the first one-way cock 3291,329 downlink of piston arrives initial position.
First one-way cock 3291 and second one-way valve door 3292 are that check valve, overflow valve or safety valve etc. only allow liquid
The valve of one way flow.The cracking pressure of second one-way valve door 3292 is higher, hydraulic when simply pulling on the components such as steel column 322
It will not be opened when oil pressure, only encountering the rising of oil pressure caused by impact force can just open.The unlatching of first one-way cock 3291
Pressure is smaller, can be opened by the hydraulic oil of the compression of spring 3210 downside.
Pull-up anchor line 3223 can install pressure-reducing ring, remaining draws anchor line that can also install pressure-reducing ring.Anchors 325
Spiral ground pile 324 also can be used with intermediate anchor part 326.Existing technology installation hydraulic cushion member on pull-up anchor line 3223
Part is divided into two anchor line 3223 is pulled up, and the both ends of hydraulic cushion element require to connect with anchor line is drawn, and it is more to need to install fixation
Secondary drawing anchor line.The weight for drawing anchor line to carry simultaneously is also limited, and the weight of hydraulic cushion element and the hydraulic oil of inside can be all limited,
Buffer capacity is weak.It can be used repeatedly for spiral ground pile 324, and installation pull-up 3223 needs of anchor line are installed twice, while spirally
324 pairs of hydraulic cylinders 327 of stake play the role of support and accommodate, and can contain hydraulic oil more greatly with installation volume in spiral ground pile 324
More hydraulic damping devices.Simultaneously because more preferably and the hydraulic damping device of more weight increases the whole weight of spiral ground pile 324,
Spiral ground pile 324 is set to bear bigger pulling force.
Preferably, when cutting is Stone Cutting, using static blasting cooperation hydraulic breaking hammer construction.Splitting machine construction
Before, hidden hole drilling jewel hole is first used, jewel hole array pitch is 120cm, pitch-row 120cm, hole depth 150cm, diameter 110mm.To rock stratum
After splitting, breakup is carried out using hydraulic breaking hammer, then be transported to specified region with digging machine entrucking, complete the entire cutting cubic meter of stone and open
Excavation construction；
Every grade of Stone Cutting excavate before surveying setting-out, the excavation line of this grade and every layer of excavation leg wire of slope are released, in construction
Add quartering hammer layering broken using mechanical disintegration machine rock stratum first, sillar is removed in excavator cooperation, according to design grade of side slope,
Step and cutting absolute altitude are crushed, and side slope surface position is reserved 20-30cm and is not crushed, and are repaired using hand fit's digging machine quartering hammer
Whole slope surface.Platform should be noted that the control of absolute altitude, the gradient and width when modifying, be controlled in strict accordance with layout design；
Every 3~the 4m of excavation face height should once be modified in excavator operation altitude range to slope surface is excavated, by setting
Ratio of slope, linear is counted, is manually carried out using mechanical engagement, while excavation slope is checked using total station, to ensure out
It digs slope surface not owe to dig not backbreak, berm width meets design drawing requirement.Site operation technical staff should be equipped with slope than frame, tape measure
Deng checking at any time excavation slope, to instruct mechanical operation member operation.
Preferably, it when cutting is square cutting, is excavated using digging machine, operation can be completed in dumper truck transport, excavates
Before carry out pumping equipment.
Rock blasting construction principle is as follows:
(1) to guarantee the balanced continuity and fragmentation quality of production, while being conducive to the control of shotfiring safety, rock blasting
It is carried out without exception using drillhole blasting method.Medium-length hole bench blasting is used digging the deep main body blast area greater than 5m；Digging depth 2m~
5m section implements shallow blasting；It digs the deep region less than 2m and uses slim hole bench blasting；The second-time breakage of large rock mass
Use slim hole explosion.
(2) from the angle of advantageous shovel dress and operation safety, the main body step height of medium-length hole bench blasting is chosen to be 5
~8m.
(3) the bore diameter d=76mm of medium-length hole bench blasting, the bore diameter of shallow blasting are determined as d=76mm, greatly
Block rock second-time breakage blasting boreholes diameter selects Φ=42mm.
(4) rock excavation divides step to carry out from top to bottom, and vertical direction is from top to bottom, longitudinal by two sides to centre, same
On section from high to low.
(5) adjust the distance building and road closer section explosion when using protection framed bent, nearby protection and blast area table
The safety prevention measures such as face covered protection, when explosion, must implement stringent Security alert.Specific blast working paragraph such as following table.
1, blasting construction process
The inspection of the scene of a crime, data collection → proposition, selection blast working scheme → blast working design → explosion formality examination & approval
Site inspection and processing → effect analysis and record after → blast working → detonation → explosion
2, blast working scheme
Rock excavation is real using the blasting method that medium-length hole blasting, shallow blasting, buffer shooting and presplit blasting combine
Apply explosion.Require explosion that multiple steps can be divided to carry out according to landform, roadbed side slope uses presplit blasting method to carry out explosion to protect
Demonstrate,prove the stabilization of side slope and complete.
3, blast working designs
According to this section construction geographical environment and massif geological conditions, explosive selects No. 2 rock emulsion explosives.In the mistake of powder charge
Cheng Zhong changes demolition effect, reduces boulder yield, can use broken charges spaced loading structure to improve blasting quality.
All medium-length hole blastings are all made of millisecond detonating method, while V is respectively adopted depending on work surface situation, environmental condition and cutting depth
A variety of detonation modes such as shape, trapezoidal, waveform, small oblique line and linear.
3.1 blasting parameter
3.1.1 medium-length hole standing parameter
(1) bore diameter Φ=76mm, blasthole are vertically laid, and horizontal layout squarely or quincunx, blasting parameter is pressed
Various calculating below:
The present invention is described by way of example above, but the present invention is not limited to above-mentioned specific embodiment, all to be based on
Any changes or modifications that the present invention is done are fallen within the scope of the claimed invention.
Claims (10)
1. a kind of cutting excavation construction method, which comprises the following steps:
Step S1: it excavates intercepting ditch (21)；
Step S2: clear table；
Step S3: surveying and locating；
Step S4: cutting excavation and side slope protection construction.
2. a kind of cutting excavation construction method as described in claim 1, it is characterised in that: step S4 the following steps are included:
Cutting: being divided into first layer, the second layer, third layer and the 4th layer by step S41 from top to bottom, is installed at first layer side slope
Three-level protects (33), and second level protection (33) is installed at third layer side slope, and second level protection (32) is installed at the 4th layer of side slope,
Primary protection (31) are installed on the outside of the kerbstone of runway；
Step S42: upper layer (1) and first layer inside lower layer (2) inside first layer are successively excavated from top to bottom, on first layer inside
Lower layer (2) is to excavate from inside to outside inside layer (1) and first layer, then removes the three-level at first layer side slope and protects (33),
It by three-level protection (33) movement and is installed at second layer side slope, excavates first layer side slope (3) from outside to inside；
Step S43: upper layer (4) and second layer inside lower layer (5) inside the second layer are successively excavated from top to bottom, then removes second
Layer side slope at three-level protect (33), from top to bottom successively excavate the second layer on side slope (6) and second layer slope (7), second
Lower layer (5) inside the internal upper layer (4) of layer, the second layer, side slope (6) and second layer slope (7) are from inside to outside on the second layer
It excavates；
Step S44: upper layer (8) and third layer inside lower layer (9) inside third layer are successively excavated from top to bottom, then removes third
Second level at layer side slope protects (32), successively excavates side slope (10) and third layer slope (11) in third layer from top to bottom, the
Lower layer (9) inside three layers of internal upper layer (8), third layer, side slope (10) and third layer slope (11) are from interior in third layer
It excavates outward；
Step S45: successively excavating lower layer (13) inside the 4th layer of internal upper layer (12) and the 4th layer from top to bottom, then removes the
Second level at four layers of side slope protects (32), successively excavates the 4th layer of upper side slope (14) and the 4th layer of slope (15) from top to bottom,
4th layer of internal upper layer (12), the 4th layer of internal lower layer (13), the 4th layer upper side slope (14) and the 4th layer of slope (15) are
It excavates from inside to outside；
Step S46: it removes primary protection (31).
3. a kind of cutting excavation construction method as described in claim 1, it is characterised in that: the primary protection (31) includes the
One earth anchor reinforcing bar (311), I-steel (312), the first diagonal brace (313), the first bamboo springboard (314) and steel plate (315), the I-shaped
Steel (312) two sides are affixed with the first earth anchor reinforcing bar (311) respectively, in the first earth anchor reinforcing bar (311) insertion ground and with ground
Face is affixed, and the I-steel (312) and the first diagonal brace (313) are affixed, and first diagonal brace (313) is inserted into gutter (22) simultaneously
It is contacted with the bottom surface of gutter (22), is fixedly installed with the first bamboo springboard (314), the I-steel on the outside of the I-steel (312)
(312) inside is fixedly installed with steel plate (315).
4. a kind of cutting excavation construction method as described in claim 1, it is characterised in that: the second level protection (32) includes base
Seat (1), steel column (2), ring network (3), lower supporting rope (21), upper supporting rope (22), pull-up anchor line (23), spiral ground pile (4) and
Foundation bolt anchor pole (11), the foundation bolt anchor pole (11) pass through pedestal (1) and fix pedestal (1) and concrete layer (12),
The pedestal (1) and steel column (2) are hingedly, affixed with pull-up anchor line (23) above the steel column (2), pull-up anchor line (23)
The other end is detachably connected with spiral ground pile (4), and the spiral ground pile (4) is detachably connected with ground, the top of each steel column (2)
End is connected by upper supporting rope (22), and the bottom end of each steel column (2) is connected by lower supporting rope (21), the upper supporting rope (22)
It is laid between lower supporting rope (21) and ring network (3) is installed.
5. a kind of cutting excavation construction method as described in claim 1, it is characterised in that: the three-level protection (33) includes the
Three earth anchor reinforcing bars (331), steel pipe (332), third diagonal brace (333) and third bamboo springboard (334), the third earth anchor reinforcing bar
(331) it is inserted into ground and is fixedly connected with the ground, the third earth anchor reinforcing bar (331).
6. a kind of cutting excavation construction method as claimed in claim 4, it is characterised in that: the spiral ground pile (324) is internal
It is formed with installation cavity (3241), the hydraulic cylinder (327) is in installation cavity (3241) and affixed with spiral ground pile (324), described
It is equipped with piston (329) in hydraulic cylinder (327), the piston (329) is slidably connected with hydraulic cylinder (327), the piston (329)
Affixed with piston rod (328), the piston rod (328) passes through hydraulic cylinder (327) and is slidably connected with hydraulic cylinder (327), described
Piston rod (328) top is connected with mounting ring (3282), and piston rod (328) outer sheath is equipped with spring (3210), the bullet
Spring (3210) one end is fixed relative to piston rod (328) relative to hydraulic cylinder (327) the fixed other end, piston (329) peace
Equipped with the first one-way cock (3291) and second one-way valve door (3292), hydraulic oil is from when the piston (329) moves upwards
Two one-way cocks (3292) flow downward, when the piston (329) moves downward hydraulic oil from the first one-way cock (3291) to
Upper flowing.
7. a kind of cutting excavation construction method as claimed in claim 6, it is characterised in that: the piston rod (328) is formed with
Mounting portion (3281), described spring (3210) one end and hydraulic cylinder (327) contact other end are contacted with mounting portion (3281), described
Hydraulic cylinder (327) inner wall is formed with retention bead (3271).
8. a kind of cutting excavation construction method as claimed in claim 4, it is characterised in that: outermost two steel columns (322)
Affixed with layback anchor line (3225) respectively, the other end and anchors (325) of the layback anchor line (3225) are affixed, the side
Anchoring piece (325) is fixedly connected with the ground, and the part steel column (322) of inside is reinforced with centre draws anchor line (3224) affixed, the centre
It reinforces and draws the other end of anchor line (3224) and intermediate anchor part (326) affixed, the intermediate anchor part (326) is fixedly connected with the ground,
The upper supporting rope (3222) is equipped with pressure-reducing ring, and the pull-up anchor line (3223) is equipped with pressure-reducing ring.
9. a kind of cutting excavation construction method as described in claim 1, it is characterised in that: when cutting is Stone Cutting, adopt
With static blasting cooperation hydraulic breaking hammer construction.Before splitting machine construction, hidden hole drilling jewel hole is first used, jewel hole array pitch is 120cm, pitch-row
For 120cm, hole depth 150cm, diameter 110mm.After the splitting of rock stratum, breakup is carried out using hydraulic breaking hammer, then use
Digging machine entrucking is transported to specified region, completes entire cutting rock excavation construction；
Every grade of Stone Cutting excavate before surveying setting-out, release the excavation line of this grade and every layer of excavation leg wire of slope, in construction first
Add quartering hammer layering broken using mechanical disintegration machine rock stratum, sillar is removed in excavator cooperation, according to design grade of side slope, step
And cutting absolute altitude is crushed, side slope surface position is reserved 20-30cm and is not crushed, and modifies slope using hand fit's digging machine quartering hammer
Face.Platform should be noted that the control of absolute altitude, the gradient and width when modifying, be controlled in strict accordance with layout design；
Every 3~the 4m of excavation face height should once be modified in excavator operation altitude range to slope surface is excavated, by design slope
It is rate, linear, it is manually carried out using mechanical engagement, while excavation slope is checked using total station, to ensure to excavate slope
Face does not owe to dig not backbreak, and berm width meets design drawing requirement.Site operation technical staff should be equipped with slope than frame, tape measure etc. with
When excavation slope is checked, to instruct mechanical operation member operation.
10. a kind of cutting excavation construction method as described in claim 1, it is characterised in that: when cutting is square cutting, use
Digging machine excavates, and operation can be completed in dumper truck transport, carries out pumping equipment before excavation.
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| CN110864593A (en) * | 2019-11-21 | 2020-03-06 | 上海市基础工程集团有限公司 | Earth-rock combined foundation pit and stone blasting excavation construction method |
| CN111155539A (en) * | 2020-02-13 | 2020-05-15 | 中铁二十三局集团有限公司 | Existing road side high cutting excavation construction method |
| CN112268490A (en) * | 2020-10-28 | 2021-01-26 | 中国安全生产科学研究院 | Blasting construction method for high-pressure gas transmission pipeline |
| CN113417299A (en) * | 2021-07-06 | 2021-09-21 | 中铁二十局集团第六工程有限公司 | Excavation method for adjacent existing railway subgrade |
| CN113431575A (en) * | 2021-06-11 | 2021-09-24 | 中铁六局集团有限公司 | Construction method for assisting excavation of stone cutting by plunger type rock hydraulic splitter |
| CN113624083A (en) * | 2021-07-12 | 2021-11-09 | 中国化学工程重型机械化有限公司 | Cutting earthwork construction method |
| CN113756313A (en) * | 2021-09-01 | 2021-12-07 | 华能江西清洁能源有限责任公司 | Construction method of embedded road in steep mountain land |
| CN113882289A (en) * | 2021-11-18 | 2022-01-04 | 中铁二院重庆勘察设计研究院有限责任公司 | Construction method for cutting close to existing line side slope |
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| CN113417299A (en) * | 2021-07-06 | 2021-09-21 | 中铁二十局集团第六工程有限公司 | Excavation method for adjacent existing railway subgrade |
| CN113624083A (en) * | 2021-07-12 | 2021-11-09 | 中国化学工程重型机械化有限公司 | Cutting earthwork construction method |
| CN113756313A (en) * | 2021-09-01 | 2021-12-07 | 华能江西清洁能源有限责任公司 | Construction method of embedded road in steep mountain land |
| CN113882289A (en) * | 2021-11-18 | 2022-01-04 | 中铁二院重庆勘察设计研究院有限责任公司 | Construction method for cutting close to existing line side slope |
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