CN108952728B - A kind of headframe main body construction and self well digging freeze parallel construction system and method - Google Patents
A kind of headframe main body construction and self well digging freeze parallel construction system and method Download PDFInfo
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- CN108952728B CN108952728B CN201810799130.4A CN201810799130A CN108952728B CN 108952728 B CN108952728 B CN 108952728B CN 201810799130 A CN201810799130 A CN 201810799130A CN 108952728 B CN108952728 B CN 108952728B
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D7/00—Shaft equipment, e.g. timbering within the shaft
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/10—Preparation of the ground
- E21D1/12—Preparation of the ground by freezing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/11—Lining shafts; Linings therefor with combinations of different materials, e.g. wood, metal, concrete
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/12—Accessories for making shaft linings, e.g. suspended cradles, shutterings
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Wood Science & Technology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention mentions a kind of headframe main body construction and self well digging, freezes parallel construction system and method, and parallel construction system includes freezing system, headframe construction system and self well digging system；Freezing system is arranged in pit shaft periphery；Freezing system includes freezing pipe, and freezing pipe adjacent well bore is circumferentially arranged, and multiple freezing pipes form round freezing pipe curtain；Headframe construction system is located above self well digging system；Headframe construction system includes headframe frame, and headframe frame is equipped with first layer platform and second layer platform；Self well digging system is located above freezing system；Self well digging system includes pit shaft casting system；Pit shaft casting system is arranged on headframe frame；The present invention can construct to self well digging and to frozen construction while headframe main body construction by the way of headframe construction system, self well digging construction system and frozen construction system parallel arrangement；The construction period is shortened, extremely frigid zones headframe has been filled up, pit shaft freezing, has dug the blank for building cross parallel rapid construction.
Description
Technical field
The invention belongs to mine construction fields, and in particular to a kind of headframe main body construction and self well digging freeze parallel apply
Work system and method.
Background technique
Coal mine shaft lining, which is built, generally uses construction freezing method in topsoil, and rock section uses normal sinking.Outside freeze section
Wall pick is built and rock section pick block is all made of short section pick and builds mixture operation method, and inner wall is constructed using slip-form.At shaft building initial stage, derrick
Or multiple processes such as headframe construction, Freezing stratum as rapid pore-creating, vertical pick block lifting means arrangement concentrate near well head, conventional scheme
Sequence and occupancy duration are as follows: headframe pile foundation construction (no less than 1.5 months) → well head beats Freezing stratum as rapid hole (about 2.5 months) → well
Tower pile foundation support table construction (about 0.5 month) → freeze groove construction (about 0.3 month) → headframe construction (about 6 months) → arrangement
Interim sinking shaft facility (about 1.2 months) → vertical pick is built；Accumulative duration holding time is long, especially extremely frigid zones shaft building, such as north
Reachable -36 DEG C of the minimum temperature in side area, discomfort shares steel structure derrick, needs construction reinforced bar concrete shear wall structure headframe,
It is basic to be designed as large volume reinforced concrete+cast-in-situ bored pile form more, thus cause the duration usually more than December.
The premise of headframe structure safety is headframe ground, and basis must have enough bearing capacitys to resist itself dead load
With external dynamic load.During freezing process shaft building, especially unevenly to be lifted in view of hoist-tower foundation caused by frost heave, thaw collapse
The various forms of destructions of headframe caused by rising, settling, influence mine hoisting and safety in production.Permanent shaft tower environmental suitability compared with
By force, but its most obvious disadvantage is exactly to occupy that time preparatory period is long, and sinking shaft erection of equipment process is more complex, especially freezing engineering
Have a lot of preparation work, freeze groove construction occupy well head nearby the time it is long, if to shorten the construction period, headframe, pit shaft freezing, vertical
Pick, which is built, must realize that cross parallel is constructed.
Accordingly, it is desirable to provide a kind of be directed to the insufficient improved technology scheme of the above-mentioned prior art.
Summary of the invention
The purpose of the present invention is to provide a kind of vertical headframe, pit shaft freezing, picks to build cross parallel construction method, at least
The current existing vertical headframe of solution, pit shaft freezing dig and build multiple processes construction occupancy entirety times duration length, generate and freeze expense
The problem of increase, it is ensured that the safety that cross parallel is constructed is built in headframe, pit shaft freezing, pick, can guarantee safe and efficient shaft building, have
More significant economic benefit.
To achieve the goals above, the invention provides the following technical scheme:
A kind of headframe main body construction and self well digging freeze parallel construction system, parallel construction system include freeze be
System, headframe construction system and self well digging system；
The freezing system is arranged in pit shaft periphery；The freezing system includes freezing pipe, and the freezing pipe is neighbouring
The pit shaft is circumferentially arranged, and multiple freezing pipes form round freezing pipe curtain；
The headframe construction system is located above the self well digging system；The headframe construction system includes headframe frame
Frame, the headframe frame are equipped with first layer platform and second layer platform, and the headframe frame is for providing carrying and support；
The self well digging system is located above the freezing system；The self well digging system includes sinking shaft system and well
Cylinder casting system；The pit shaft casting system is arranged on the headframe frame.
As described above a kind of headframe main body construction and self well digging freeze parallel construction system, it is preferable that the headframe is applied
Work system further includes structural column, and four structural columns are crossed on above the pit shaft, the first layer platform and the second layer
Platform is connected on the structural column, and the second layer platform is located above the first layer platform, on the second layer platform
It is equipped with solid wood, the solid wood is used to close the following space section of second layer platform；The headframe frame surrounding is also set
Have a headframe protective fence, the headframe protective fence be arranged in on the headframe outer side surface at second layer platform sustained height；
Preferably, also match on the headframe protective fence and be arranged with headframe anti-drop net.
As described above a kind of headframe main body construction and self well digging freeze parallel construction system, it is preferable that the headframe is applied
Work system further includes winch lifting system and interim waste stone exhaust system, and the winch lifting system and the interim waste stone exhaust system are located at
On first layer platform, the interim waste stone exhaust system is located at side of the winch lifting system far from the headframe frame；It is described
Winch lifting system includes winch sheave wheel platform, winch head sheave beam, winch hoist(ing) pulley；The winch head sheave beam is arranged described
On winch sheave wheel platform, the winch that mentions dies wheel setting on the winch head sheave beam；The interim waste stone exhaust system includes row
Cash sheave wheel platform, discharge refuse head sheave beam, discharge refuse head sheave and stable car device, the discharge refuse head sheave beam are arranged in the discharge refuse sheave wheel platform
On, the discharge refuse head sheave is arranged on the discharge refuse head sheave beam；The stable car device is arranged in ground base；
Preferably, the stable car device is 25t stable car device.
As described above a kind of headframe main body construction and self well digging freeze parallel construction system, it is preferable that the sinking shaft system
Including interim sinking shaft system, unilateral side slips cash system and pair slips hook cash system；The interim sinking shaft system includes fixed pulley, described fixed
Pulley is suspended on first layer platform lower surface by wirerope herringbone, and the unilateral side slips cash system and is arranged in first layer platform
On, the pair slip hook cash system be arranged in the headframe frame lateral wall, the pair slip hook cash system be located at the first layer put down
At platform and ground intermediate altitude；
Preferably, the fixed pulley is 20t fixed pulley.
As described above a kind of headframe main body construction and self well digging freeze parallel construction system, it is preferable that the pit shaft pours
The system of building includes pressure ventilation pipe suspention head sheave, and the right side at the center of the second layer platform is arranged in the pressure ventilation pipe suspention head sheave,
The pressure ventilation pipe suspention head sheave is connected with pressure ventilation pipe by wirerope and is oriented to head sheave, and the pressure ventilation pipe guiding head sheave is located at described
The right end of two-layer platform；The pressure ventilation pipe suspention head sheave is symmetrically located relative to plane where the center line of the second layer platform
Head sheave is suspended in midair equipped with drainpipe, and the drainpipe suspention head sheave is connected with drainpipe by the wirerope and is oriented to head sheave, described
The left end of the second layer platform is arranged in drainpipe guiding head sheave.
As described above a kind of headframe main body construction and self well digging freeze parallel construction system, it is preferable that the pit shaft pours
The system of building further includes the double-deck hanging scaffold, and through steel wire hang in pit shaft, the shaft in wall is equipped with and hangs the bilayer hanging scaffold
Disk is moved up and down by chute convenient for the double-deck hanging scaffold；The pit shaft upper end is additionally provided with closure plate, the closure plate be with
The pancake disk of through-hole.
As described above a kind of headframe main body construction and self well digging freeze parallel construction system, it is preferable that freezing system is also
Including freezing groove, described to freeze groove annular in shape；The groove periphery of freezing is equipped with along the groove circumferencial direction that freezes
Support column, multiple support columns form support system for freezing groove outer wall supporting to described.
As described above a kind of headframe main body construction and self well digging freeze parallel construction system, it is preferable that the headframe frame
Be additionally provided on frame lateral wall it is safe guarding shed, it is described it is safe guarding shed for open circles it is cyclic annular, it is described it is safe guarding shed be located at it is described
Pair is slipped between hook cash system and the first layer platform, for providing safety curtain to lower layer's working space.
A kind of headframe main body construction and self well digging, the construction method for freezing parallel construction system, it is preferable that the method packet
Include following steps:
Step 1, preparation of construction and duration budget:
Freezing drill bore and freeze groove and equipment installation after carry out frozen construction, the frozen construction budget duration be 60
It prepares to self well digging while freezing groove installation, and equipment is built in installation pick；Pick build equipment installation the budget duration be
31 days, pick, which is built after equipment is installed, started driving and masonry construction；
Step 2, headframe and freezing engineering parallel construction:
After freezing drill bore, when hoist-tower foundation excavates, using layering, piecemeal excavation method, reduce uneven lateral soil
Stress, to staying Core Soil to prevent mechanical damage around freezing pipe；Freeze to freeze complete deep frozen construction scheme using primary, headframe is adopted
With synovial membrane construction technology；While the construction of headframe synovial membrane, Freezing Station is built simultaneously, and starts to be freezed；Freezing Station is set
It sets in the place far from well head, freezing salt water needed for frozen construction can be laid with main freezing pipe to well head, by bigger space
Leave the unit in charge of construction of headframe and pit shaft for；For hoist-tower foundation shear wall in construction, freezing engineering needs uninterrupted construction；Master freezes
Pipe will pass through shear wall, reserve the hole location for freezing pipeline in advance, and need to support main freezing pipe, reinforce；
Step 3, headframe and sinking shaft, freeze parallel construction
2 layers of headframe frame structure of construction in advance are closed by being laid with girder steel and 50mm solid wood tunneling boring, and surrounding is added anti-
Guardrail and anti-drop net are formed safe guarding shed, it is ensured that lower part construction safety；2nd layer or more headframe pricks muscle, formwork, pours coagulation
The processes normal construction such as soil；First layer platform synchronous construction hoisting gear sheave wheel platform, head sheave beam and hoist(ing) pulley are normally pacified
Dress；Before two winch lifting systems are not formed, it is arranged using first layer stage+module head sheave, girder steel and two, ground 25t stable car
It is interim to promote waste stone exhaust system, form self well digging system；Self well digging engineering must be there are three the construction space in direction, and design is steady
Strand system occupies thing both direction, and southern side is used to arrange pick and builds spoil, and north side is used for personnel or more, material beats fortune；It is built in pick quick-fried
When broken, construction personnel stops operation above headframe.
Headframe main body construction and self well digging, the construction method for freezing parallel construction system as described above, it is preferable that described
In step 2, in headframe synovial membrane work progress, other than the protection of the high-altitude working safety of headframe itself, using greater than 5mm thickness
Steel plate will freeze groove and all close, and prevent falling object from high altitude from pounding leakage and freeze to freeze pipeline in groove, cause the stream for freezing salt water
It loses.
Compared with the immediate prior art, technical solution provided by the invention has following excellent effect:
The present invention using headframe construction system, self well digging construction system and frozen construction system parallel arrangement by the way of,
It can construct to self well digging and to frozen construction while headframe main body construction；In addition, well headframe of the invention, pit shaft freeze
Cross parallel construction method is built in knot, pick, is solved existing multiple processes and is being occupied time duration length, expense present on technical requirements
The problem of with increasing, proposes the new method of multiple process cross parallel constructions, it can be achieved that 6 compared with conventional construction method
Start self well digging in month, fills up extremely frigid zones headframe, pit shaft freezing, digs the blank for building cross parallel rapid construction, be coal mine
The important component of safe and efficient shaft building, social and economic benefits are significant.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.Wherein:
Fig. 1 is the arrangement schematic diagram of the freezing hole of the embodiment of the present invention, pile foundation and boring tower；
Construction method structural schematic diagram when the pile foundation and freezing pipe that Fig. 2 is the embodiment of the present invention are overlapped；
Fig. 3 is the arrangement schematic diagram of the headframe of the embodiment of the present invention, pit shaft freezing and self well digging parallel construction；
Fig. 4 is the parallel construction grid planning chart of the embodiment of the present invention.
In figure: 1, pile foundation hole；2, freezing hole；3, mud groove；4, hanging scaffold；5, pit shaft；6, freezing pipe；7, boring tower；8, stake
Datum hole battle array；9, freezing hole battle array；10, headframe pile foundation；11, structural column；12, ground base；13, first layer platform；14, the second layer
Platform；15, pressure ventilation pipe suspends head sheave in midair；16, pressure ventilation pipe is oriented to head sheave；17, drainpipe suspends head sheave in midair；18, drainpipe is oriented to day
Wheel；19, safe guarding shed；20, stable car device；21, winch.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the present invention be can be combined with each other.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the present invention rather than require the present invention that must be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.Term used in the present invention " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected,
It may be a detachable connection；It can be directly connected, can also be indirectly connected by intermediate member, for the common of this field
For technical staff, the concrete meaning of above-mentioned term can be understood as the case may be.
According to a particular embodiment of the invention, as shown in Figures 1 to 3, a kind of vertical headframe, pit shaft freezing, pick are built to intersect and be put down
Row construction system and method, parallel construction system include freezing drill bore system, and freezing drill bore system includes freezing system and freezes
Hole poration schemes.Freezing system is arranged in 5 periphery of pit shaft.Freezing system includes freezing pipe 6, and multiple freezing pipes 6 are adjacent to well
The circumferential setting of cylinder 5.Freezing hole poration schemes include hanging scaffold 4 and boring tower 7, and the lower surface of boring tower 7 is connected to the upper surface of hanging scaffold 4,
Five bench drill towers 7 are uniformly arranged close to the circumferential edge of hanging scaffold 4.
Headframe construction system, headframe construction system include 10 system of headframe pile foundation and headframe frame system, headframe pile foundation 10
System is located on the outside of freezing hole poration schemes.10 system of headframe pile foundation includes slewing drilling machine, and slewing drilling machine is interspersed to be arranged in boring tower 7
Between, slewing drilling machine is used to form pile foundation hole 1, and multiple pile foundation holes 1 form pile foundation hole battle array 8.Headframe frame system includes headframe frame
Frame, headframe frame are equipped with first layer platform 13 and second layer platform 14, and headframe frame is for providing carrying and support.
Pit shaft 5 digs block system, and pit shaft 5 is dug block system and is located above freezing system.It includes sinking shaft system that pit shaft 5, which digs block system,
With 5 casting system of pit shaft.5 casting system of pit shaft is arranged on headframe frame.
According to a particular embodiment of the invention, headframe headframe frame system further includes structural column 11,21 lifting system of winch
With interim waste stone exhaust system.Four structural columns 11 are crossed on above pit shaft 5, and first layer platform 13 and second layer platform 14 connect
On structural column 11, second layer platform 14 is located at 13 top of first layer platform, is equipped with solid wood on second layer platform 14, thick
Plank is used to close 14 or less space section of second layer platform.Headframe frame surrounding is additionally provided with headframe protective fence, headframe protection
Column be arranged in on the headframe outer side surface at 14 sustained height of second layer platform.
21 lifting system of winch and interim waste stone exhaust system are located on first layer platform 13, and interim waste stone exhaust system is located at winch 21
Side of the lifting system far from headframe frame.21 lifting system of winch includes 21 sheave wheel platform of winch, and 21 head sheave beam of winch twists
21 hoist(ing) pulley of vehicle.21 head sheave beam of winch is arranged on 21 sheave wheel platform of winch, mentions winch 21 and dies wheel setting at winch 21 days
It takes turns on beam.Interim waste stone exhaust system includes discharge refuse sheave wheel platform, discharge refuse head sheave beam, discharge refuse head sheave and stable car device 20, discharge refuse head sheave
Beam is arranged on discharge refuse sheave wheel platform, and discharge refuse head sheave is arranged on discharge refuse head sheave beam.Stable car device 20 is arranged in ground base 12
On.Preferably, stable car device 20 is 25t stable car device 20.More preferably, also anti-fall with headframe is arranged on headframe protective fence
Net.
According to a particular embodiment of the invention, freezing system further include refrigeration equipment, inlet tube, isocon, freeze groove,
Collecting fitting and liquid back pipe.Freezing pipe 6 is hollow shape round tube, and freezing pipe 6 is located in freezing hole 2, and freezing pipe 6 is from the top of freezing hole 2
Portion extends along the depth direction of freezing hole 2 to be laid with to 2 bottom of freezing hole.
Multiple freezing holes 2 form freezing hole battle array 9, and multiple freezing pipes 6 form 6 acts of freezing pipe, and the inner wall that 6 acts of freezing pipe leans on
The periphery face of nearly hanging scaffold 4.6 acts of upper ends of freezing pipe, which are equipped with, freezes groove, and it is annular in shape to freeze groove, freezes groove periphery edge
Freeze groove circumferencial direction equipped with support column, multiple support columns form support systems and are used for freezing groove outer wall supporting.
Freeze to be equipped with isocon and collecting fitting in groove, isocon and collecting fitting are in open circles ring-type, and collecting fitting is located at
Below isocon.Isocon lower surface is circumferentially uniformly provided with shunting through-hole, and the upper end of each freezing pipe 6 passes through multiple points
Recirculation hole is connected with isocon, and 2 upper end of freezing hole is equipped with interflow pipe through-hole close to upper end surface, and freezing hole 2 is logical by collecting fitting
Hole is connected to collecting fitting.
The front end of inlet tube is connected on refrigeration equipment, and the rear end of inlet tube is connected on isocon.The front end of liquid back pipe
It is connected on collecting fitting, the rear end of liquid back pipe is connected with refrigeration equipment, for hypothermic saline to be back to refrigeration equipment.
Refrigeration equipment, inlet tube, isocon, freezing pipe 6, freezing hole 2, collecting fitting and liquid back pipe are formed for hypothermic saline
The successive loops of circulation.Preferably, refrigeration equipment is located at outside pile foundation hole battle array 8.More preferably, freeze diameter of a circle where groove with
The diameter that 6 acts of freezing pipe is identical.
According to a particular embodiment of the invention, 5 casting system of pit shaft includes pressure ventilation pipe suspention head sheave 15 and the double-deck hanging scaffold 4.
The right side at the center of second layer platform 14 is arranged in pressure ventilation pipe suspention head sheave 15, and pressure ventilation pipe suspends head sheave 15 in midair and connected by wirerope
There is pressure ventilation pipe to be oriented to head sheave 16, the right end for the two-layer platform that pressure ventilation pipe guiding head sheave 16 is located at.Pressure ventilation pipe suspends 15 phase of head sheave in midair
Plane where the center line of second layer platform 14 is symmetrically located to be equipped with drainpipe suspention head sheave 17, it is logical that drainpipe suspends head sheave 17 in midair
It crosses wirerope and is connected with drainpipe guiding head sheave 18, the left end of second layer platform 14 is arranged in drainpipe guiding head sheave 18.
For the double-deck hanging scaffold 4 through steel wire hang in pit shaft 5,5 inner wall of pit shaft is equipped with hanging scaffold 4 by chute, convenient for double
Layer hanging scaffold 4 moves up and down.5 upper end of pit shaft is additionally provided with closure plate, and closure plate is the pancake disk with through-hole.
According to a particular embodiment of the invention, sinking shaft system includes interim sinking shaft system, and unilateral side slips cash system, and pair slips hook cash system
Interim sinking shaft system of uniting includes fixed pulley, and fixed pulley is suspended on 13 lower surface of first layer platform by wirerope herringbone, unilateral
It slips cash system to be arranged on first layer platform 13, pair is slipped hook cash system and is arranged in headframe frame lateral wall, and pair slips hook cash system position
At first layer platform 13 and ground intermediate altitude.Preferably, fixed pulley is 20t fixed pulley.
According to a particular embodiment of the invention, 2 poration schemes of freezing hole include mud groove 3 and slurry conduit, mud ditch
The section of slot 3 is in concave shape, and one end of mud groove 3 is connected to the periphery face of hanging scaffold 4, and is close to outside the circumference of hanging scaffold 4
Side is circumferentially extended to joining end to end, and forms ring structure.3 bottom of mud groove is additionally provided with mud through-hole.Multiple slurry conduits
One end airtight connection in multiple mud through-holes, the other end of multiple slurry conduits extends to the upper end of multiple freezing holes 2.
According to a particular embodiment of the invention, perfusion system includes mud pit, perfusion conduit and steel reinforcement cage.Mud pit is nothing
Head space heart rectangular-shape, mud pit lower surface are equipped with universal wheel, provide conveniently for the movement for mud pit.The following table of mud pit
Face is additionally provided with fill orifice.One end of multiple perfusion conduits is sealedly connected in multiple fill orifices, the other end of multiple perfusion conduits
Extend to different 1 bottoms of pile foundation hole.Steel reinforcement cage is located in pile foundation hole 1, is used to form pile foundation.It is also set on headframe frame lateral wall
Have safe guarding shed 19, safe guarding shed 19 for open circles ring-type, safe guarding shed 19, which are located at pair, slips hook cash system and first layer
Between platform 13, for providing safety curtain to lower layer's working space.8 periphery of pile foundation hole battle array has a rectangular shape, and pile foundation hole battle array 8
In 6 acts of outsides of freezing pipe.The road of reserved casting pile foundation concrete is equipped in pile foundation hole battle array 8.Preferably, pile foundation hole 1 has 55~65.
More preferably, it is less than 3m with the spacing of the every two adjacent pile foundation hole 1 of vertical direction in the horizontal direction.
According to a particular embodiment of the invention, it as shown in figure 4, providing parallel construction grid planning chart of the present invention, opens certainly
Work starts, and freezing drill bore and headframe pile foundation 10 are constructed while being carried out, and after freezing drill bore, freezes groove and equipment installation and well
5 pick of cylinder is built preparations and is carried out simultaneously, freezes groove and after equipment is installed, starts frozen construction, preparation is built in the pick of pit shaft 5
It completes to start pick block equipment installation later, after pick block equipment is installed, pick block starts to construct.Simultaneously with above-mentioned construction procedure
The step of progress, has, broken pile head, after broken pile head construction is completed, starts foundation construction, the duration needed for foundation construction is substantially
30 days, quintar main body construction being carried out later and delivers installation, equipment installation is built in completion pick later and pick block starts to construct.
The present invention also provides vertical headframe, pit shafts 5 to freeze, digs the parallel construction method for building cross parallel construction system,
Parallel construction method includes the following steps,
Step 1, headframe pile foundation 10 and freezing drill bore parallel construction:
Close to 4 edge of hanging scaffold, circumferentially five bench drill towers 7 of equal angular setting, 7 bottom of boring tower and hanging scaffold 4 are living on hanging scaffold 4
Dynamic link, so that boring tower 7 is moved to different station construction.After boring tower 7 is set, while five bench drill towers 7 are opened, in the position of design
It sets drilling and forms freezing hole 2.While the formation of freezing hole battle array 9, the automobile slewing drilling machine for pile foundation hole 1 of constructing interts setting
In 7 gap of boring tower, pile foundation hole 1 is drilled out around freezing hole battle array 9, and gradually forms pile foundation hole battle array 8.
One circle mud groove 3 of welding, is put into mud, 2 mud of freezing hole in mud groove 3 on 4 outer circumference face of hanging scaffold
Slurry retaining wall uses the mud for freezing and using for PHP-HPAN mud and C-PAN-KHm mud.Mud is in 3 inner recirculation flow of mud groove
Dynamic, the mud in mud groove 3 is imported in freezing hole battle array 9 by slurry conduit, carries out 2 mud off of freezing hole.2 mud of freezing hole
While starching retaining wall, steel reinforcement cage is hung into pile foundation hole battle array 8, is prepared for process below.
Dig a circle in 9 upper end of freezing hole battle array and freeze groove, in each freezing hole 2 under be put into freezing pipe 6, decentralization is frozen
While tying pipe 6, construction site is poured into mud pit and is connected to mud bottom of pond portion from concrete, perfusion conduit is mixed, concrete is introduced into stake
The bottom of steel reinforcement cage in datum hole 1, mud pit are perfused along reserved filling stake path when moving, and form pile foundation.Part pile foundation hole 1
It is adjacent with freezing pipe 6, cause that difficulty of construction is big, when pile foundation hole 1 and 6 neighbor distance of freezing pipe are less than 100mm, it is necessary to first construction stake
Base, rear freezing hole 2 of constructing, avoids freezing pipe 6 from being squeezed and deformed or shift, causes scrapping for freezing pipe 6.Pile foundation and freezing pipe 6
When trace overlap, freezing pipe 6 is deviateed into original position, at least keeps 0.3m distance with pile foundation, when the construction of freezing pipe 6 to pile foundation bottom
Afterwards, freezing pipe 6 is oriented to by former design position using gyro guiding method.
Step 2, headframe and freezing engineering parallel construction:
After freezing drill bore, when hoist-tower foundation excavates, using layering, piecemeal excavation method, reduce uneven lateral soil
Stress, to staying Core Soil to prevent mechanical damage around freezing pipe 6.Freeze to freeze complete deep frozen construction scheme, headframe using primary
Using synovial membrane construction technology.While the construction of headframe synovial membrane, Freezing Station is built simultaneously, and starts to be freezed.By Freezing Station
It is arranged far from the place of well head, freezing salt water needed for frozen construction can be laid with main freezing pipe 6 to well head, by bigger sky
Between leave the unit in charge of construction of headframe and pit shaft 5 for.For hoist-tower foundation shear wall in construction, freezing engineering needs uninterrupted construction.It is main
Freezing pipe 6 will pass through shear wall, reserve the hole location of freezing pipe 6 in advance, and need to support main freezing pipe 6,
It reinforces.In headframe synovial membrane work progress, other than the protection of the high-altitude working safety of headframe itself, using the steel for being greater than 5mm thickness
Plate will freeze groove and all close, and prevent falling object from high altitude from pounding the freezing pipe 6 for leaking and freezing in groove, cause the stream for freezing salt water
It loses.
Step 3, headframe and sinking shaft, freeze parallel construction
2 layers of headframe frame structure of construction in advance are closed by being laid with girder steel and 50mm solid wood tunneling boring, and surrounding is added anti-
Guardrail and anti-drop net form safe guarding shed 19, it is ensured that lower part construction safety.2nd layer or more headframe prick muscle, formwork, pour it is mixed
The processes normal constructions such as solidifying soil.13 sheave wheel platform of synchronous construction hoisting gear 21 of first layer platform, head sheave beam and hoist(ing) pulley
Normal mounting.Before two 21 lifting systems of winch are not formed, head sheave, girder steel and two, ground are installed using first layer platform 13
The setting of 25t stable car is interim to promote waste stone exhaust system, forms pit shaft 5 and digs masonry system.Engineering is built in the pick of pit shaft 5 must applying there are three direction
Work space designs steady strand system and occupies thing both direction, and southern side is used to arrange pick and builds spoil, and north side is used for personnel or more, material
Beat fortune.When explosion is built in pick, construction personnel stops operation above headframe.
Embodiment 1:
The present embodiment for Ordos City, Inner Mongolia Autonomous Region tower so it is high strangle the mining area south lake Bo Jiang coal mine auxiliary shaft into
Row construction, vertical depth 611m, mine formally go into operation in January, 2010, and the end of the year 2012 put into serial production, and the duration 36 months.Pit shaft 5
Using construction freezing method, rock section is constructed using normal sinking, and auxiliary shaft design uses reinforced concrete shear wall structure headframe,
The high 66m of headframe, basic engineering are large volume reinforced concrete structure, and buried depth -6m, the following are cast-in-situ bored pile, mud offs on basis.Stake
Base diameter is Headframe pile foundation 10 height 22m, totally 60.
Planned according to the total construction period of mine construction, critical circuits: freezing-pick block-tunnelling the construction period of pit shaft 5
It has been determined that and compression space very little, in order to not influence mine total construction period, the headframe proposed using this patent with freeze, dig
The parallel construction method of well, particularly may be divided into three phases:
(1) headframe pile foundation 10 and freezing drill bore parallel construction
Auxiliary shaft freezing is punchinged plan time 65 days, and freezing hole 2 totally 44, thermometer hole 3,2, hydrology hole adds up pore-creating
22690m.Progress is arranged using the boring tower 7 of 5 22.5KW as shown in Figure 1 while being constructed, headframe pile foundation 10 totally 60, branch exists
The surrounding of freezing hole 2, pile foundation use reacting cycle either chemical retaining wall, and three wings scraper type drill bit rotary drilling pore-forming, steel reinforcement cage is whole
Section plus hoop positioning molding, the whole section in aperture directly play cage, and the construction technology of concrete pile is mixed in the underwater placing of conduit certainly.
PHP-HPAN the mud and C-PAN-KHm mud that freezing drill bore uses, mud groove 3 are covered with 4 surrounding of hanging scaffold, stake
Base construction uses the homemade mud of bentonite, welds mobile mud pit using steel plate, the method connected with pipeline avoids pile foundation mud
Starch and freeze mud cross-mixing.
Part pile foundation is adjacent with freezing pipe 6 when being less than 100mm, it is necessary to which pile foundation of first constructing, rear freezing hole 2 of constructing avoid
Freezing pipe 6 is squeezed and deformed or displacement, causes scrapping for freezing pipe 6.
When pile foundation and 6 trace overlap of freezing pipe, freezing pipe 6 is deviateed into original position as shown in Figure 2, at least keeps 0.3m with pile foundation
Freezing pipe 6 is oriented to former design position using gyro guiding method behind construction to pile foundation bottom by distance.
(2) headframe pile foundation 10 and freezing drill bore parallel construction
Freeze after punchinging, headframe and freeze to start to construct, freezes to freeze complete deep frozen construction scheme using primary, it is low
The freezing method of warm big flow, positive phase brine temp are -32 DEG C, and maintenance phase brine temp is -24~-26 DEG C；Headframe uses
Synovial membrane construction technology, while the construction of headframe synovial membrane, Freezing Station is built simultaneously, and starts to be freezed.
When hoist-tower foundation excavates, since depth of foundation is -6m, it is necessary to freezing pipe 6 is protected, first prevents mechanical damage,
Second, which prevents earthwork collapsing from squeezing, causes freezing pipe 6 to deform.
(3) headframe and sinking shaft, freeze parallel construction
Headframe is constructed to 33m, and after freezing to 1.8 months, pit shaft 5 has requirements for starting construction, starts driving and masonry construction.Pit shaft 5 is applied
The work previous moon be the equipment set-up time as shown in figure 4, at this time headframe suspension of works, downtime be arranged in the winter period of rest, shorten
Total construction period of headframe.Freezing engineering continues to construct during this period, while installing head sheave, surely twisting system, after the winter period of rest, well
Tower continues up construction, and pit shaft 5 downwards build by pick, freezes also to work on.
Embodiment 2:
The present embodiment is constructed for the lake Bo Jiang mine auxiliary shaft using permanent shaft tower sinking shaft, and 82 meters of headframe height, maximum capacity
52709.8m3m3, maximum beam span 26m, maximum support height is 17m, is divided into+15.5m ,+24m ,+32.5m and+44.9m four
A floor.Sinking shaft operation platform utilization+15.5m and two floor of+24m, and 4, center of headframe rectangular arrangement is utilized in+26.2m
Large-scale steel reinforced concrete column self-control hoisting gear 21 uses sheave wheel platform.
Mine major and minor well headframe in the lake Bo Jiang is all made of armored concrete box structure, and using slding form operation, continuous placing is mixed
Solidifying soil, speed of application is fast, and template high recycling rate can substantially reduce project cost.In order to which comprehensive and accurate grasp main shaft is held
Platform internal temperature field development and change rule is evenly arranged No. 1 and No. 2 two string thermometric line, every string 12 along surrounding in the middle part of cushion cap
Measuring point amounts to 24 measuring points.Wherein No. 1 thermometric line is arranged in middle campshed position, and No. 2 thermometric lines are arranged in the interior campshed of cushion cap
Position.The main contents of hoist-tower foundation cushion cap stress characteristic monitoring include the monitoring of cushion cap base pressure, cushion cap inside reinforcement stresses
The content of monitoring and concrete temperature stress monitoring etc., uses finite element method, sunykatuib analysis is outer on this basis
The regularity of distribution of cushion cap stress variation characteristic and mass concrete internal temperature stress under load action.Along basal perimeter
On the side line of the parallel base side of four angle points and nearly north-south, hoist-tower foundation subsidence survey point is arranged.
Analyzed by complex art, in hoist-tower foundation casting process, points 2 layers, four blocks poured, concrete benefit
With hot water stirs, waggon using cotton blanket heat preservation is wrapped up in, mould-entering device is totally-enclosed, at interval of one stove of several meters of placements in headframe,
The thick plastic cloth closing of headframe surrounding, it is ensured that concrete setting condition.
The two floor of+32.6m of permanent shaft tower ,+24.0m is closed by being laid with girder steel and 50mm solid wood tunneling boring, four
Zhou Zengshe protective fence and anti-drop net, it is ensured that the following construction safety of two floors.The above headframe of+32.6m pricks muscle, formwork, pours coagulation
The processes normal construction such as soil.+ 24.0m synchronous construction hoisting gear 21 uses sheave wheel platform (i.e. self-control+26.2m platform), head sheave beam
And hoist(ing) pulley normal mounting.Before two 21 lifting systems of winch are not formed, using+24.0m stage+module head sheave, girder steel and
The 25t stable car setting of two, ground is interim to promote waste stone exhaust system, and synchronous carry out is built in the pick of pit shaft 5.
(1), interim sinking shaft system
A, discharge refuse is promoted
20t fixed pulley, phase are hung by 40mm wirerope " people " font using+24.0m platform N2, N3 steel I-beam
To elevation location+20.5m, two 25t stable cars for promoting center line close to pit shaft 5 are selected in thing stable vehicles, pass through 38mm steel
Cord promotes 5m3 well-bucket, meets head on to stay a bottom tank, underground dislodging hook, tinning is unable to overfill.Cash system discharge refuse is slipped to ground using east side
Face, using artificial, forklift cleaning cash soil.It is perfect that+11.5m is turned over into cash platform with the time simultaneously, auxiliary hook is slipped into cash system and is formed,
People is removed in construction period, underground.
B, pit shaft 5 tunnels
It is cut the earth using 2 PC60 little Song excavators, spade deburring, soil is directly transported to well head, utilizes forklift people by small digging machine
Work is cleared up in time.Using first digging pilot shaft, short section bench excavation, last artificial brushing to design circle diameter, to freezing groove
Wall carries out getting column support ready.Construction is to the left and right deeply 3m, when small digging machine can not directly dish out soil from working face, using temporarily mentioning
Rise the construction of discharge refuse scheme.
C, it pours with template suspension and lower ash system
The high 4m of hydraulic pressure metal integral mold plate, radius 6.05m are arranged outstanding using the sheave wheel platform that+15.5m has been installed
It hangs, selects 2 template suspension head sheaves of the platform, the suspention of a set of pressure ventilation pipe and guiding head sheave, 1 set of drainpipe suspention and guiding head sheave
Totally 4 point of suspension, corresponding 4 stable car synchronization lifting templates build wall use to meet.Casting concrete makes before 20m is built in the pick of pit shaft 5
Directly enter mould with long-distance sand transport pump truck, lower ash system is separately made after 20m, concrete scheme: the double-deck hanging scaffold 4, suspention are first installed
Rope and the high about 9m of hanging scaffold 4, the high 4m of template, 4m height of excavation section of meeting head on can install closure plate by calculating below.Pour coagulation
When native, directly enter mould using chute in lower layer's hanging scaffold 4.
(2), headframe is constructed
Using assembling hydraulic sliding mould construction, floor and centre " well " font support post are adopted for headframe shear wall and load-bearing side column
It is poured with existing branch plank sheathing, every bottom class's steel pipe sets up 30 people of work, 20 people of bar bender, and 10 people of carpenter pours use and is pumped into mould, office
Portion's pump truck large arm can not construct, then enter mould using tower crane suspention ash-pit, it is ensured that molding temperature is not less than 15 DEG C, and strict control is mixed
The solidifying soil presetting period.When headframe+32.6m or more pricks the processes normal constructions such as muscle, formwork, casting concrete, lower layer's sheave wheel platform
Synchronous installation will carry out pendant object protection conscientiously.
(3), 21 hoist(ing) pulley stage+module of winch
+ 26.2m sheave wheel platform is self-control sinking shaft platform, is welded in four among permanent shaft tower using 5 girder steels of H700 × 30
On root post pre-embedded steel slab, platform framework is formed, sets up 5 I 63a and 2 950 × 300 combination welding steel beam thereon as head sheave
Beam.Major-minor, which is promoted, selects the big winch 21 of 2JKZ-4.0m/15 twin-roll, hoist(ing) pulley diameter 3.0m.While headframe is constructed,
In the above east and west sides shear wall of+24m platform respectively there are 8m × 9m (high × wide) head sheave beam and head sheave lifting window, one is utilized
Platform 50t crane is used cooperatively with tower crane, each beam and head sheave is installed in place.
(4), implementation result
To on December 30th, 2009, headframe was constructed to 40.8m, auxiliary shaft be completed permanent locking construction ,+24.0m and+
26.2m sheave wheel platform installs, the big winch 21 of two 4m and 20 stable cars have tested normal operation, the pick block 32m of pit shaft 5,
It is completed at the same time the emphasis works such as hydraulic pressure metal template, double-deck 4 underground of the sinking platform assembling, closure plate installation, the laying of well head two-orbit
Sequence, only used time 24d.
In conclusion well headframe of the invention, pit shaft freezing, pick block cross parallel construction method, solve existing multiple
Process is occupying the problem of time duration is long, expense increases present on technical requirements, propose multiple process cross parallels and apply
The new method of work fills up extremely frigid zones headframe, pit shaft, it can be achieved that starting self well digging in 6 months compared with conventional construction method
Freeze, dig the blank for building cross parallel rapid construction, is the important component of the efficient shaft building of safety of coal mines, society, economic effect
It is beneficial significant.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (12)
1. a kind of headframe main body construction and self well digging freeze parallel construction system, which is characterized in that parallel construction system packet
It includes: freezing system, headframe construction system and self well digging system；
The freezing system is arranged in pit shaft periphery；The freezing system includes freezing pipe, and the freezing pipe is neighbouring described
Pit shaft is circumferentially arranged, and multiple freezing pipes form round freezing pipe curtain；
The headframe construction system is located above the self well digging system；The headframe construction system includes headframe frame, institute
Headframe frame is stated equipped with first layer platform and second layer platform, the headframe frame is for providing carrying and support；
The self well digging system is located above the freezing system；The self well digging system includes that sinking shaft system and pit shaft pour
Build system；The pit shaft casting system is arranged on the headframe frame；
The pit shaft casting system further includes the double-deck hanging scaffold, and the bilayer hanging scaffold passes through steel wire hang in pit shaft, the well
Cylinder inner wall is equipped with hanging scaffold by chute, moves up and down convenient for the double-deck hanging scaffold；The pit shaft upper end is additionally provided with closure plate, institute
Stating closure plate is the pancake disk with through-hole.
2. a kind of headframe main body construction as described in claim 1 and self well digging freeze parallel construction system, feature exists
In the headframe construction system further includes structural column, and four structural columns are crossed on above the pit shaft, the first layer
Platform and second layer platform are connected on the structural column, and the second layer platform is located above the first layer platform, described
Solid wood is equipped on second layer platform, the solid wood is used to close the following space section of second layer platform；The headframe
Frame surrounding is additionally provided with headframe protective fence, the headframe protective fence be arranged in on the outside of the headframe at second layer platform sustained height
On wall surface.
3. a kind of headframe main body construction as claimed in claim 2 and self well digging freeze parallel construction system, feature exists
In also with being arranged with headframe anti-drop net on the headframe protective fence.
4. a kind of headframe main body construction as described in claim 1 and self well digging freeze parallel construction system, feature exists
Further include winch lifting system and interim waste stone exhaust system in, the headframe construction system, the winch lifting system and described faces
When waste stone exhaust system be located on first layer platform, the interim waste stone exhaust system is located at the winch lifting system far from the headframe frame
The side of frame；The winch lifting system includes winch sheave wheel platform, winch head sheave beam, winch hoist(ing) pulley；The winch day
It takes turns beam to be arranged on the winch sheave wheel platform, the winch that mentions dies wheel setting on the winch head sheave beam；
The interim waste stone exhaust system includes discharge refuse sheave wheel platform, discharge refuse head sheave beam, discharge refuse head sheave and stable car device, the discharge refuse day
It takes turns beam to be arranged on the discharge refuse sheave wheel platform, the discharge refuse head sheave is arranged on the discharge refuse head sheave beam；The stable car device
It is arranged in ground base.
5. a kind of headframe main body construction as claimed in claim 4 and self well digging freeze parallel construction system, feature exists
In the stable car device is 25t stable car device.
6. a kind of headframe main body construction as described in claim 1 and self well digging freeze parallel construction system, feature exists
In the sinking shaft system includes interim sinking shaft system, and unilateral side slips cash system and pair slips hook cash system；The interim sinking shaft system packet
Fixed pulley is included, the fixed pulley is suspended on first layer platform lower surface by wirerope herringbone, and the unilateral side slips cash system and sets
It sets on first layer platform, the pair is slipped hook cash system and is arranged in the headframe frame lateral wall, and the pair slips hook cash system position
At the first layer platform and ground intermediate altitude.
7. a kind of headframe main body construction as claimed in claim 6 and self well digging freeze parallel construction system, feature exists
In the fixed pulley is 20t fixed pulley.
8. a kind of headframe main body construction as described in claim 1 and self well digging freeze parallel construction system, feature exists
In the pit shaft casting system includes pressure ventilation pipe suspention head sheave, and the pressure ventilation pipe suspention head sheave is arranged in the second layer platform
Center right side, pressure ventilation pipe suspention head sheave is connected with pressure ventilation pipe by wirerope and is oriented to head sheave, and the pressure ventilation pipe is oriented to
Head sheave is located at the right end of the second layer platform；Center of the pressure ventilation pipe suspention head sheave relative to the second layer platform
Plane where line is symmetrically located to be equipped with drainpipe suspention head sheave, and the drainpipe suspention head sheave is connected with draining by the wirerope
Pipe is oriented to head sheave, and the left end of the second layer platform is arranged in the drainpipe guiding head sheave.
9. a kind of headframe main body construction as described in claim 1 and self well digging freeze parallel construction system, feature exists
In freezing system further includes freezing groove, and described to freeze groove annular in shape；It is described to freeze groove periphery and freeze groove along described
Circumferencial direction is equipped with support column, and multiple support columns form support system for freezing groove outer wall supporting to described.
10. a kind of headframe main body construction as described in claim 1 and self well digging freeze parallel construction system, feature exists
In being additionally provided with safe guarding shed on the headframe frame lateral wall, described safe guarding shed cyclic annular for open circles, the safety is anti-
Shield canopy is located at the pair and slips between hook cash system and the first layer platform, for providing safety curtain to lower layer's working space.
11. a kind of headframe main body construction as described in any one of claim 1 to 10 and self well digging freeze parallel construction system
Construction method, which is characterized in that the described method comprises the following steps:
Step 1, preparation of construction and duration budget:
Freezing drill bore and freeze groove and equipment installation after carry out frozen construction, the frozen construction budget duration be 60 days,
It while freezing groove installation, prepares to self well digging, equipment is built in installation pick；The pick block equipment installation budget duration is 31 days,
Pick, which is built after equipment is installed, starts driving and masonry construction；
Step 2, headframe and freezing engineering parallel construction:
After freezing drill bore, when hoist-tower foundation excavates, using layering, piecemeal excavation method, reduce uneven lateral soil stress,
To staying Core Soil to prevent mechanical damage around freezing pipe；Freeze using complete deep frozen construction scheme is once frozen, headframe is using cunning
Film construction technology；While the construction of headframe synovial membrane, Freezing Station is built simultaneously, and starts to be freezed；Freezing Station setting is existed
Place far from well head, freezing salt water needed for frozen construction can be laid with main freezing pipe to well head, and bigger space is left for
The unit in charge of construction of headframe and pit shaft；For hoist-tower foundation shear wall in construction, freezing engineering needs uninterrupted construction；Main freezing pipe is wanted
Shear wall is passed through, to reserve the hole location for freezing pipeline in advance, and needs to support main freezing pipe, is reinforced；
Step 3, headframe and sinking shaft, freeze parallel construction:
2 layers of headframe frame structure of construction in advance are closed by being laid with girder steel and 50mm solid wood tunneling boring, and surrounding adds protective fence
And anti-drop net, it is safe guarding shed to form figure, it is ensured that lower part construction safety；2nd layer or more headframe pricks muscle, formwork, casting concrete
Etc. processes normal construction；First layer platform synchronous construction hoisting gear sheave wheel platform, head sheave beam and hoist(ing) pulley normal mounting；
Before two winch lifting systems are not formed, it is arranged using first layer stage+module head sheave, girder steel and two, ground 25t stable car interim
Waste stone exhaust system is promoted, self well digging system is formed；Self well digging engineering must be there are three the construction space in direction, and designing steady twist is
It unites and occupies thing both direction, southern side is used to arrange pick and builds spoil, and north side is used for personnel or more, material beats fortune；When explosion is built in pick,
Construction personnel stops operation above headframe.
12. headframe main body construction as claimed in claim 11 and self well digging, the construction method for freezing parallel construction system,
It is characterized in that, in the step 2, in headframe synovial membrane work progress, other than the protection of the high-altitude working safety of headframe itself, adopts
It will freeze groove with the steel plate for being greater than 5mm thickness all to close, and prevent falling object from high altitude from pounding leakage and freeze to freeze pipeline in groove, cause
Freeze the loss of salt water.
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| CN110155867A (en) * | 2019-06-25 | 2019-08-23 | 陕西陕煤韩城矿业有限公司 | Milling coal hole winch overtravel protection system |
| CN110566173B (en) * | 2019-09-12 | 2021-11-12 | 杰瑞能源服务有限公司 | Fracturing system with antifreezing performance |
| CN113356859B (en) * | 2021-06-10 | 2024-02-20 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Interlayer pouring and installing construction method for permanent engineering of blind vertical shaft cap |
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|---|---|---|---|---|
| CN102536249A (en) * | 2012-02-23 | 2012-07-04 | 中煤第五建设有限公司 | Fast construction method of headframe lifting system |
| CN106761765A (en) * | 2016-12-24 | 2017-05-31 | 中铁十八局集团有限公司 | One kind is applied to Frozen Shaft and safely and fast excavates by huge thick big expanded clay layer construction method |
| CN108035335A (en) * | 2017-09-30 | 2018-05-15 | 中煤第五建设有限公司 | A kind of construction freezing method well shaft type underground parking garage method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536249A (en) * | 2012-02-23 | 2012-07-04 | 中煤第五建设有限公司 | Fast construction method of headframe lifting system |
| CN106761765A (en) * | 2016-12-24 | 2017-05-31 | 中铁十八局集团有限公司 | One kind is applied to Frozen Shaft and safely and fast excavates by huge thick big expanded clay layer construction method |
| CN108035335A (en) * | 2017-09-30 | 2018-05-15 | 中煤第五建设有限公司 | A kind of construction freezing method well shaft type underground parking garage method |
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