CN1150210A - Sealing shaft sinking method - Google Patents
Sealing shaft sinking method Download PDFInfo
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- CN1150210A CN1150210A CN 95118168 CN95118168A CN1150210A CN 1150210 A CN1150210 A CN 1150210A CN 95118168 CN95118168 CN 95118168 CN 95118168 A CN95118168 A CN 95118168A CN 1150210 A CN1150210 A CN 1150210A
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- open caisson
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Abstract
A bottom-closed shaft sinking method as a special shaft excavation technique features the bottom of shaft is closed and different main pipes for high-pressure water, dregs discharge, slurry, high-pressure air, balancing, and water make-up are arranged in the shaft. Water distribution pipe is connected to each hydraulic monitor. The hydraulic monitors downward are installed around the lower end of balancing pipe, which has thickened tube with bottom valve in it. The thixotropic slurry device or film clean water device is synchronously and quantitatively filled for decreasing the drag to protecting wall. Its advantages include few auxiliaries, small sinking resistance, high digging speed, good effectiveness of preventing shift, and low cost.
Description
The present invention relates to a kind of sealing shaft sinking method, belong to the special sinking technique of coal industry field.
At present, three kinds of technical methods are used in the special sinking shaft in countries in the world always, i.e. freezing process, and boring method and caisson sinking method in submerged water, the above two are main method, the latter classifies less important method as.But the analysis latter contrasts preceding two kinds multinomial outstanding advantage, and simple as technology, plant equipment power is few, and the duration is short, starts easily, and cost is low etc.; Just owing to have that sinking gravity deficiency, the technology of breaking ground do not pass a test, the side resistance is big and uneven, it is little etc. that pit shaft produces deflection, submergence depth, the performance of restriction drop shaft sinking advantage.
The objective of the invention is to overcome above-mentioned weak point of the prior art, and provide a kind of and reach weightening finish, drag reduction, efficiently break ground, prevent deflection, increase heavy body, realize fast, the sealing shaft sinking method of high-quality, low cost.
The object of the present invention is achieved like this: wellbore bottom is equipped with back cover, the water under high pressure main vertically is installed in the pit shaft, balance pipe, thixotropic slurry main, scum pipe, pressure ventilation pipe, filling pipe: water under high pressure main lower end and distribution pipe are communicated with, distribution pipe is an annular, is installed in the position of back cover top ring by the borehole wall; Upwards pick out tens of hydraulic giant arms along distribution pipe, link to each other with the slotting hydraulic giant that is distributed in back cover and sword underfooting, end opening hydraulic giant and sword pin hydraulic giant respectively, every hydraulic giant arm is near with the distribution pipe junction non retern valve and Electrocontrolled high-pressure penstock being installed; The retaining wall drag reduction adopts and quantitatively injects the thixotropic slurry device synchronously, there are several that mud cylinder body of piston is arranged in floor mounted, steel cable one end is connected with piston rod, one end is connected with the open caisson wall, defeated slurry Jiao Ying on the cylinder body is connected with the mud main in the pit shaft, has been horizontally disposed with annular flow inlet in the pit shaft of top, sword footstool rank, and the mud main is communicated with annular flow inlet, several wall pipe one ends are communicated with annular flow inlet, and an end leads to the mud ring of top, open caisson wall outside footstool rank; Balance pipe vertically is installed in the pit shaft, on the back cover around the balance pipe lower end end opening hydraulic giant is installed, can put into the big and heavy stone tube that valve or movable jaw are arranged at the bottom in the balance pipe.
Purpose of the present invention can also realize by following technical measures: the Electrocontrolled high-pressure penstock on each hydraulic giant arm is connected with the straighforward operation button on ground by cable, the contact box of ground display lamp is installed on the Electrocontrolled high-pressure penstock outlet pipe, and contact box cable is connected with the ground display lamp.Straighforward operation button and ground display lamp are installed on the operation board according to each hydraulic giant opposite position of down-hole.The retaining wall drag reduction also can adopt film clear water device, the bellows of ring sword pin is housed on sword footstool rank, is placed with the checkerwork cell groove in it, checkerwork cell groove invagination stacks and is equipped with tough waterproof film, and the film upper end is fixed on the cover well inwall, on the open caisson wall outside and the cover well inwall annular device for trapping is installed.Between Tu Bi, film and open caisson wall, inject clear water or inject the height ratio heavy water or the mud of soluble chemistry material as required
Compare with prior art, the sealing shaft sinking method major advantage is:
1, sinking gravity can increase more than three times, and it is existing 1/tens that side resistance is reduced to, and guaranteed that deep-well also can sink smoothly.
2, break ground speed, efficient can improve more than ten times, guarantees that the shaft bottom is washed into design shape.
But 3, open caisson wall attenuate does not need to thicken because of weightening finish, and the cover well can subtract shallow, is not required to be drag reduction and deepens, and does not need because of open caisson being strengthened reinforcing, and it is simple and easy accurate to measure, and does not need concrete back cover under water intact man-hour, cements the well and need not replace mud.
4, eliminated the shaft bottom injustice, side hinders unequal multinomial generation deflection factor.
5, developed that open caisson advantage, duration shorten, cost is low.
6, widen the drop shaft sinking scope of application, can be used for deep-well, Da Jing, winding shaft, advanced special sinking shaft technical progress of industry.
Be described in further detail the present invention below in conjunction with drawings and Examples:
Fig. 1 is an open caisson vertical section schematic diagram of the present invention.
Fig. 2 quantitatively injects thixotropic slurry apparatus structure schematic diagram synchronously for retaining wall drag reduction of the present invention.
Fig. 3 is a retaining wall drag reduction films clear water apparatus structure schematic diagram of the present invention.
Among Fig. 1: open caisson wall (2) is in the middle of cover well (1), the steel plate of steel work back cover (10) and girder steel are umbrella pit shaft is divided into two parts up and down on the sword pin of shaft bottom: open caisson wall (2) is fixed with horizontal beam (3), water under high pressure is in pipe (4), scum pipe (18), pressure ventilation pipe (16), balance pipe (15), mud tube, filling pipe, light skew back pipe clamp is solid on horizontal beam (3), water under high pressure main (4) upper end has sebific duct to be connected with high-pressure hydraulic pump, the lower end is connected with annular water distribution pipe (9) (9) along the borehole wall, tens of hydraulic giant arms (8) are by picking out on the distribution pipe (9), lead to sword pin hydraulic giant (11) respectively, slotting hydraulic giant (20), the end opening hydraulic giant (12) of ring balance pipe (15), arrow is represented each hydraulic giant (11), (20), (12) jetting direction; Each hydraulic giant arm (8) all is equipped with the contact box (5) of non retern valve (7), Electrocontrolled high-pressure penstock (6), display lamp, Electrocontrolled high-pressure penstock (6) and contact box (5) respectively have cable to lead to button and display lamp on the terrestrial operation dish, and sword pin hydraulic giant (11) and slotting hydraulic giant (20) break ground and make the shaft bottom work plane be the abcde shape that there is the V-arrangement hole in central authorities.
Hydraulic giant breaks ground and uses on scum pipe (18) row of method for discharging residue through being installed on the well middle part that calm the anger towards the muddy water of pick, mixing chamber (19) seat is on back cover (10), sword pin hydraulic giant (11) and slotting hydraulic giant (20) break ground, and silt particle compiles in the well in the V-arrangement hole, and slotting hydraulic giant (20) makes it to rise and helps casting.When the down-hole sank, the V-arrangement hole can prevent shaft bottom soil layer shutoff scum pipe (18) suction inlet.Suction inlet is equipped with the calculation cover (17) that prevents that bowlder stone from blocking up usually.The jetting total amount that sword pin hydraulic giant (11), slotting hydraulic giant (20) break ground for replenishing the deficiency of water-borne displacement, is equipped with from ground the low pressure filling pipe of amount of makeup water under back cover (10) usually less than scum pipe (18) water-borne displacement in the pit shaft.
Break ground at sword pin hydraulic giant (11), slotting hydraulic giant (20), filling pipe moisturizing and scum pipe (18) go up between waiting, back cover (10) hydraulic pressure down is that constantly height changes, for in the balance well of regulating pressure balance pipe (15) being installed, be near the water surface (30) of in well, pouring water suitable for reading, an open at both ends straight tube under the following logical back cover (10).Back cover (10) down the variation of the hydraulic pressure water yield show as interior the water surface of balance pipe (15) lifting or on emit leakage down, play the balance adjustment effect.Ring balance pipe (15) end opening hydraulic giant (12) only becomes to gather bowlder stone dell (14) drawing to use to dash to dig when getting bowlder stone under balance pipe (15), being convenient to vertically to transfer special tool from balance pipe (15) smashes or transfers the end and have valve to become the big and heavy stone tube of movable jaw to draw to get, back cover (10) is gone up design the pedestrian hole (13) that is no less than two, pressure ventilation pipe (16) lower end is communicated with mixing chamber (19), press wind to enter scum pipe (18) through aperture, be the upwards operation of a large amount of parcel bubbles, suction back cover (10) is the hydraulic giant muddy water that breaks ground down, sword underfooting end is surrounded by steel plate (21), interior and reinforcing bar welds, also be convenient to and back cover (10) affixed, pour water in the open caisson wall (2) (27), the water surface (30), back cover (10) is carried out ballast, also can pour into the sand ballast in case of necessity.The method of observation open caisson deflection can adopt cursory method, promptly in back cover (10) top one of steamboat is installed, and cord is around wheel, going out the rope sheave side is the well center, and end cursory (28) surfaces, and point distance borehole wall range direction is all around floated in observation, promptly know the deflection size and Orientation, end is laid well head for the rope woolding axle in addition.This method is directly perceived, convenient, accurate.Another observation deflection method is directly descend well measurements, promptly in construction midway for facilities such as inspection-pit lower pipeline valve need to get rid of to pour water in the well, personnel's work of going into the well can directly be measured at this moment.The third method is the light deviational survey, and promptly parallel pit shaft is installed the light deviational survey pipe of end opening sealing in the construction, puts into the light deviational survey of pipe by observation at last well head.Mud tube is joined slurry pipe (22) with annular downwards by horizontal beam (3) and is connected, and crosses wall coil (23) through many and passes in the sword footstool rank top belt skirts (24), and belt skirt (24) is fixed on angle on the sword footstool rank; Cross wall coil (23) and extrude mud formation mud ring (25), mud ring (25) is gone up liquid level (29) to overlapping well (1) middle and lower part, mud ring (25) thickness is usually less than 10 centimeters, its inboard is open caisson wall (2), the outside is stratum Tu Bi (26), forms the tubular mud ring (25) that surrounds open caisson wall (2).
Horizontal beam (3) among Fig. 2 in the open caisson wall (2) is gone up to link steel cable (32), and it is walked around fixed pulley (33) and is connected piston rod (36) with movable pulley (35); Chain hoist (31) plays the effect of tightening in the middle of steel cable (32); When open caisson wall (2) sinks, steel cable (32) pulling piston rod (36) moves upward, piston extrudes mud cylinder body (39) top mud and joins slurry pipe (22) through mud tube and annular that sebific duct (34) enters in the pit shaft, injects mud ring (25) through wall coil (23); Because steel cable (32) is tightened, grouting pipeline mud is full of, and the mud injection of wall coil (23) and the sinking of open caisson wall (2) were kept synchronously in time, injects the mud volume and becomes the predetermined ratio amount with the newly-increased volume of mud ring (25); Open caisson wall (2) unclamps steel cable (32) after sinking to stopping, and valve-off (37) is opened valve (38), starts slush pump (40), prepares enough mud in cylinder body (39), recovers to sink SBR again; The effect of movable pulley (35) is to make one times of piston rod (36) speedup; There is valve mud cylinder body (39) lower end, and there is pressure meter the upper end, and a plurality of cylinder bodies (39) and dress and movable pulley (35) speedup reach the plasma discharge amount that needs; This uses thin layer mud ring (25), cylinder body (39) number is subtracted greatly, when adopting no mud open caisson, when untiing tightening device chain hoist (31) and getting final product, adopt little slurry open caisson being connected of the interior horizontal beam of open caisson wall (2) (3), only need to reduce cylinder body (39) quantity and get final product.
As the sinking in cover well (1) of open caisson wall (2) in 3, the welded steel plate bellows (46) of the step erection loop sword pin of open caisson wall (2) sword pin upper end, be placed with checkerwork cell groove (45) in the bellows (46), folding film (44) is arranged in it, open caisson wall (2) sinks in cover well (1), when bellows (46) top enters cover well (1) when the bottom surface is following, extracting film (44) upper end out is fixed on cover well (1) inwall, on the Tu Bi (26) below the fixed point, the long rubber tile that a segment protect film is housed, pour into clear water to cover well (1) then, form water ring (42), the water surface (41) sinks with open caisson wall (2) in cover well (1) middle and lower part, film (44) is attached on the Tu Bi (26) that newly exposes by hydrostatic pressing after the angle annulus is extracted out from film gold (46) outside automatically immediately; Checkerwork cell groove (45) and the gapped clear water of ganging up of bellows (46) inwall, guarantee that film (44) is state in Free water, unlikely being obstructed during extraction, fall bellows (46) top for preventing ground sandy soil foreign material, on cover well (1) inwall and open caisson wall (2), plastic cement cut-off equipment (43) is housed, or hang floating trough on cover well (1) water surface (41) top, the water pipe (47) that replaces former mud tube is housed on the horizontal beam (3) in open caisson wall (2) pit shaft, following T-Ring shape is joined slurry pipe (22) and the many string water pipes (48) of crossing wall coil (23) and being communicated with bellows (46) bottom, when open caisson construction finishes, by ground through water pipe (47), annular is joined slurry pipe (22), cross wall coil (23) and inject cement paste, hold up the lighter clear water of proportion from bottom to top, realize well cementation.
Claims (7)
1, a kind of sealing shaft sinking method, wellbore bottom is equipped with back cover, and water under high pressure main, balance pipe, thixotropic slurry main, scum pipe, pressure ventilation pipe, filling pipe vertically are installed in the pit shaft, it is characterized in that:
A, water under high pressure main lower end and distribution pipe are communicated with, and distribution pipe is an annular, are installed in the position of back cover top ring by the borehole wall;
B, upwards pick out tens of hydraulic giant arms along distribution pipe, link to each other with the slotting hydraulic giant that is distributed in back cover and sword underfooting, end opening hydraulic giant and sword pin hydraulic giant respectively, every hydraulic giant arm is near with the distribution pipe junction non retern valve and Electrocontrolled high-pressure penstock being installed;
C, retaining wall drag reduction adopt and quantitatively inject the thixotropic slurry device synchronously, there are several that mud cylinder body of piston is arranged in floor mounted, steel cable one end is connected with piston rod, one end is connected with the open caisson wall, mud main in defeated slurry sebific duct on the cylinder body and the pit shaft is connected, and has been horizontally disposed with annular flow inlet in the pit shaft of top, sword footstool rank, and the mud main is communicated with annular flow inlet, several wall pipe one ends are communicated with annular flow inlet, and an end leads to the mud ring of top, open caisson wall outside footstool rank;
Balance pipe vertically is installed in d, the pit shaft, on the back cover around the balance pipe lower end end opening hydraulic giant is installed, can put into the big and heavy stone tube that valve or movable jaw are arranged at the bottom in the balance pipe.
2, sealing shaft sinking method according to claim 1, it is characterized in that the Electrocontrolled high-pressure penstock on each hydraulic giant arm is connected with the straighforward operation button on ground by cable, the contact box of ground display lamp is installed on the Electrocontrolled high-pressure penstock outlet pipe, and contact box cable is connected with the ground display lamp.
3, sealing shaft sinking method according to claim 2 is characterized in that straighforward operation button and ground display lamp are installed on the operation board according to each hydraulic giant opposite position of down-hole.
4, sealing shaft sinking method according to claim 1 is characterized in that the mud ring thickness is less than 10 centimeters.
5, sealing shaft sinking method according to claim 1, it is characterized in that the retaining wall drag reduction also can adopt film clear water device, the bellows of ring sword pin is housed on sword footstool rank, be placed with the checkerwork cell groove in it, checkerwork cell groove invagination stacks and is equipped with tough waterproof film, the film upper end is fixed on the cover well inwall, on the open caisson wall outside and the cover well inwall annular device for trapping is installed.
6, sealing shaft sinking method according to claim 1 or 5 is characterized in that injecting clear water between Tu Bi, film and open caisson wall.
7, sealing shaft sinking method according to claim 6 is characterized in that also can injecting between Tu Bi, film and open caisson wall the height ratio heavy water or the mud of soluble chemistry material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95118168A CN1049272C (en) | 1995-11-15 | 1995-11-15 | Sealing shaft sinking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95118168A CN1049272C (en) | 1995-11-15 | 1995-11-15 | Sealing shaft sinking method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1150210A true CN1150210A (en) | 1997-05-21 |
| CN1049272C CN1049272C (en) | 2000-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95118168A Expired - Fee Related CN1049272C (en) | 1995-11-15 | 1995-11-15 | Sealing shaft sinking method |
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| Country | Link |
|---|---|
| CN (1) | CN1049272C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060623A (en) * | 2013-03-20 | 2014-09-24 | 中国二十冶集团有限公司 | Open caisson structure provided with resistance reduction mechanism and dry excavation method of open caisson |
| CN105386452A (en) * | 2015-10-16 | 2016-03-09 | 上海市基础工程集团有限公司 | Construction method for assisting in sinking of open caisson through high-pressure water |
| CN107023026A (en) * | 2017-06-02 | 2017-08-08 | 中国矿业大学 | A kind of sealing bottom type caisson wall and construction method |
| CN113846664A (en) * | 2021-08-05 | 2021-12-28 | 上海市基础工程集团有限公司 | Continuous soil-taking and sinking machine for non-drainage open caisson |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4790384A (en) * | 1987-04-24 | 1988-12-13 | Penetrators, Inc. | Hydraulic well penetration apparatus and method |
| CN1043483C (en) * | 1994-07-30 | 1999-05-26 | 海勃湾矿务局基本建设第一工程处 | Open caisson method of inclined shaft |
-
1995
- 1995-11-15 CN CN95118168A patent/CN1049272C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060623A (en) * | 2013-03-20 | 2014-09-24 | 中国二十冶集团有限公司 | Open caisson structure provided with resistance reduction mechanism and dry excavation method of open caisson |
| CN105386452A (en) * | 2015-10-16 | 2016-03-09 | 上海市基础工程集团有限公司 | Construction method for assisting in sinking of open caisson through high-pressure water |
| CN107023026A (en) * | 2017-06-02 | 2017-08-08 | 中国矿业大学 | A kind of sealing bottom type caisson wall and construction method |
| CN113846664A (en) * | 2021-08-05 | 2021-12-28 | 上海市基础工程集团有限公司 | Continuous soil-taking and sinking machine for non-drainage open caisson |
| CN113846664B (en) * | 2021-08-05 | 2023-03-10 | 上海市基础工程集团有限公司 | Continuous soil-taking and sinking machine for non-drainage open caisson |
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| Publication number | Publication date |
|---|---|
| CN1049272C (en) | 2000-02-09 |
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