CN101718093B - Static pressure type forming device and method for soil-cement underground water interception curtain - Google Patents

Abstract

The invention belongs to the technical field of building construction methods and construction equipment, and relates to a static pressure type forming device for implementing a cement soil underground water interception curtain with seepage prevention and water interception functions and a method thereof, wherein a full hydraulic static pile press is used as a host machine, two forming devices which are mutually related and independent and have the bottom end and the top end being free, and guide bodies with specific shapes are respectively fixed at the outer edges of the two short edges of the section, the devices are respectively pressed in and lifted by the static pile press, a soil body gradually enters the device body in the pressing process, a stirrer arranged in the device stirs the entering soil body, cement paste is sprayed while the device is lifted and the stirrer is rotated anticlockwise, and a continuous curtain-shaped solid body with higher strength than natural soil, good water stability and a preset shape is formed, the method has the advantages of good environmental protection effect, obvious economic benefit, safety, reliability, wide application range, simple process and short construction period.

Description

Cement-soil underground waterproof of man static pressure type shaped device and method

Technical field:

The invention belongs to builing industry ground foundation engineering job practices and construction equipment technical field, be used for the base pit engineering antiseepage, the employing static pressure type shaped device of the function that intercepts water implements the underground waterproof of man of cement-soil, particularly a kind of cement-soil underground waterproof of man static pressure type shaped device and method thereof.

Background technology:

China is vast in territory, the soft soil layer thickness of the various origin causes of formation is bigger, widely distributed, as the littoral facies sedimentary soil in the East Sea, the Huanghai Sea, the Bohai Sea, the delta facies sedimentary soil of the Changjiang river, the Zhujiang River, Min River middle and lower reaches, the gyittja soil of Dongting Lake, Taihu Lake, Honghu, Dian Chi etc.A large amount of constructions along with the urban skyscraper, certainly will bring intercepting water in a series of excavation of foundation pit extremely complicated technology problem such as only to ooze, directly threaten the safety of foundation ditch and surrounding buildings thing, simultaneously the excavation of foundation ditch will a large amount of groundwater resources of earial drainage, cause the groundwater resources severe exacerbation, excavation of foundation pit and the antiseepage difficulty that intercepts water increases day by day, brings for the sustainable development in city and seriously influences.

At present, use to such an extent that the most general method is cement mixing method (an abbreviation cement earth pile) in the foundation ditch antiseepage aspect intercepting water.The job practices of cement earth pile has two kinds, paddling process pile and jet grounting (also claiming the churning method) pile.The paddling process pile is divided into two kinds of wet type (promptly with the agitation pile of slurries as curing compound) and dry types (with the agitation pile of powder as curing compound) again.Paddling process pile cardinal principle is with the host of cement as curing compound, creep into while stirring in weak soil by the Mixing Machine limit and to spray slurries or vaporific powder, on the spot weak soil and curing compound (slurries or powder) are forced to stir in the ground depths, the curing compound and the weak soil that spray in the weak soil are mixed and stirred together, by producing the series of physicochemical effect between curing compound and the weak soil, form the cement earth pile of the high fixed column of cement of compressive strength rate natural soil intensity, and column is closely arranged formation underground waterproof curtain by root.High-pressure rotary jet grouting pile is first boring (machinery that boring whitewashing one is also arranged); then the Grouting Pipe that has nozzle is implanted the predetermined degree of depth of soil layer; pressure with 20～40Mpa ejects slurries or water from nozzle; form injection stream impact failure soil layer; when speed fast; the dynamic pressure of the injection stream of the big and pulsation shape of energy is during greater than soil layer intensity; soil particle just peels off from soil layer; part fine grained soils is with slurries or the water ground of emerging; all the other grogs are in the impact force of jet; effect such as centrifugal force and gravity down; mix with slurries; and in certain puddled soil ratio and quality size; clocklike rearrange; the part soil particle condensation by mixing that the slurries that inject will sweep away becomes the cement earth pile of fixed column; fixed column is closely arranged, or injection direction is fixed, form fan-shaped body of wall shape; again the mutual interlock of fan-shaped body of wall shape is closely arranged, form the curtain that waterproof is only oozed.Existing cement-soil curtain pile has the following disadvantages: the one, and pile quality is inhomogeneous: when being reinforced soil for multilayer soil, when its compactness (pore size), water content (soft or hard degree), grogs composition, groundwater state (flow regime) or pile body design grow are spent, become volume and be difficult to control, form the irregular fixed column of diameter easily, the stake with between intersection hole, breach can appear, make intercept water or the column intensity effect bad; Existing agitation pile is because of still existing the different soil block shape influence of big small particle diameter after stirring, it is uneven that cement is distributed in the grogs, the chemical physical action timeliness of curing compound and granule soil or the bulky grain soil phenomenon that differs certainly exists, and therefore, the strength of the mixing pile discreteness of agitation pile is bigger; The 2nd, poor operability: high-pressure injection emits the slurry treatment process to need veteran constructor, otherwise occurs the injection molding fault easily; Domestic construction machinery substantially all adopts constant displacement pump transporting water mud at present, and the rotating speed of Mixing Machine is stable, mixes ratio for guaranteeing design, and complete is accurate inadequately by manually controlling by rule of thumb, and pile quality changes greatly because of the difference of human factor; The 3rd, big limitation is arranged: high pressure jet grouting is soft in soil property, coarse grain footpath or contain when constructing in the stratum of an amount of ovum gravel, and the whitewashing amount strengthens, if run into cavity, passage, covered conduit etc., is difficult for finding that in time waste of raw materials is very big that this is very passive; Empty location for rich groundwater or non-filler should not be used; High-pressure injection for collapsible loess, hard cohesive soil, contain a large amount of plant roots and stems soil layers, contain more much particle diameter cobbles (〉=200mm) stratum is not suitable for; The 4th, there are birth defects in pile body: because slurries bleed effect meeting produces contraction, a depression generally occurs at the induration top behind the high pressure jet grouting, pocket depth is different and different with factors such as soil layer property, the slurries property separated out, induration diameter and length; This depression for ground directed reinforce and waterproof only to ooze be totally unfavorable; The 5th, overall economic efficiency is not good enough: paddling process pile unit cement consumption economy, but add solid intensity, uniformity is not good enough, the essential stake quantity that increases in for safety actual the use; It is higher that high-pressure injection method adds solid intensity, and column is shaped radially than greatly, but unit cement consumption is higher, moulding is radially obvious than difference in clay and the sand, first pore-forming grouting behind shaft or drift lining, and technology is loaded down with trivial details, the pile time is longer relatively, and cement consumption is big, economy is also not ideal; The 6th, environment pollution.

Summary of the invention:

The objective of the invention is to overcome the shortcoming that prior art exists, the antiseepage of adopting environment-friendly type static(al) stake machine to carry out foundation ditch as the underground waterproof of man of cement-soil of host implementation static pressure type shaped device intercepts water.

To achieve these goals, the present invention utilizes whole hydraulic static pile pressing machine as main frame, the clamping cross section is a rectangle, bottom and top are empty smooth, by two interrelated again separately independently, its cross section two minor face outer rims are fixed with the shaped device of given shape guide way respectively, to install with static(al) stake machine according to corresponding processing step and to be pressed into successively respectively and to promote, the soil body is progressively in the access to plant body in process of press in, the agitator that is installed in the device is forced to be stirred to evenly to the soil body that enters, and the back lifting appliance, cement paste or the cement flour or the pulverized limestone etc. of 0.2～0.6Mpa pressure are ejected on limit inhour rotating spoon limit, make it with install in soil particle fully combine evenly, by producing the series of physicochemical effect between curing compound and the weak soil, form strength ratio natural soil height, water stability is good, continuity curtain shape induration with reservation shape.

The cross section of apparatus of the present invention comprises rectangle or multiple section forms such as ellipse, pipe circle or the horizontal shaped double tube of ∞, and its structure is divided into main body, guide way, agitator three parts; Described main part is made up of fundamental segment and active section, and the cross section is rectangular-shaped cored steel body; Outside dimension in fundamental segment and the active section, mechanical strength properties are consistent, the length difference, fundamental segment length is fixed, active section length be 2～4 meters etc. multiple, fundamental segment and active section adopt vertical contiguous block and horizontal contiguous block and screw to implement to be connected total length so as to the adjusting device main body, modifier embedded depth; Described guide way part is made up of the corresponding two groups of guide waies of convex concave, at the wherein simultaneously whole long convex guide way that is provided with of device minor face, guide way comprises the butt joint of convex-concave dovetail groove type, forms such as column type butt joint and multi-groove type butt joint, the whole long spill guide way of establishing of corresponding another side minor face, the device of joining two same model specifications during construction is a combination, the mutual wedging of convex-concave guide way also only can slide up and down mutually, the vertical elongated direction of guide way is provided with by the function segmentation, in the lower body part guide way dither is installed, the convex guide way of this length section scope has a cylindrical cavity that can supply to install circular vibrator, respectively being provided with one in two lugs of concave portions can be for the cylindrical cavity that circular vibrator is installed, can lay two vibrators side by side, this section guide way is fixed with screw and main body, cable is by the access vibrator that extends of circular channel in the guide way, Vibration on Start-up device in case of necessity, the amplitude that vibrator causes transfers the soil body to moving adsorbed state to the both quiet adsorbed state of fixed timeliness that device is produced, effectively reduce device and promote resistance, simultaneously cement-soil is played extraordinary vibratory compaction effect, make curtain more closely knit, intensity obviously improves; Joint and the guide way section that is connected the length position, lays the vibrator position that saves all adopt screw and main body affixed, other position guide waies adopt welding, no matter weld with the fixed guide way section of screw and all keep center line vertical consistent, so that guide way slides up and down freely mutually with appearance profile; Described agitator partly comprises agitator, oil-in, oil-out, grouting port, shaft, in-line blade, helical blade, passage and nozzle, and agitator is fixed on the device overhead fixed support, does not hinder the device of two parallel connections to slide up and down; Obtain pressure oil with oil pipe from static(al) stake machine hydraulic system by oil inlet and outlet, supply with the agitator power source; Changing the fuel feeding direction can make agitator produce positive and negative rotation; The stirrer shaft center is provided with cement paste or the unimpeded slip casting passage of dry powder, the grouting port of slip casting passage inserts outer mudjack of machine or blow gun by pipeline, start mudjack or blow gun, curing compound goes out cement paste or cement flour or pulverized limestone or coal powder along pipeline via grouting port, passage, nozzle ejection, fully mix and stir with the soil particle that stirs in advance in the device, produce physics chemical action between curing compound and the soil particle and condense into that intensity height, water stability are good, the curtain shape induration of dimensionally stable.

The inventive method adopts the combined type shaped device, allow the curing compound and the soil body in a device that preestablishes the shape volume, mix, be the quantitative curing compound and the quantitative soil body (being called for short three decides) in quantitative device in volume, mutually combine and be formed with the impervious strong curtain shape induration (abbreviation one) of good integrity of reservation shape through mixing, utilize the chucking power of whole hydraulic static pile pressing machine, only extract a device of direction of advance back during construction at every turn, to stay that another device leads as benchmark in the soil, circulation is pressed and is pulled out successively, the cement-soil mixture of ot-yet-hardened is mixed mutually, and curtain section mixing in a plurality of unit couples together and forms the underground waterproof of man shape induration that zero-clearance docks; Three principles of deciding one worker method maximum are to gather materials on the spot, utilize the original soil original place in addition small number of curing agents in reservation shape volume device restrained and form a kind of both economy practical the more underground waterproof of man of new type cement soil of environmental protection.Specifically be divided into following several technology:

A, only ooze the underground waterproof of man of cement-soil (abbreviation waterproof of man) of function mainly as waterproof, primary raw material is original soil and low amounts of water mud or dry powder, for thin type enclosure wall equally prolongs silk floss constantly, waterproof of man belongs to the non-compacted type cement-soil underground waterproof curtain of gathering materials on the spot after the moulding;

B, have the native function of certain retaining to have good waterproof again only to ooze the underground curtain curtain of cement-soil of effect (be called for short cut-off wall curtain), certain thickness (thickness than common waterproof of man is big having of just having formed, approximate body of wall shape is so be referred to as the wall curtain) when solidifying as yet fully, cement-soil unit curtain directly is not pressed into skeleton with static(al) stake machine, as the PHC pile tube of≤Φ 250mm wall thickness ≯ 70mm, shaped steel etc., strengthen cement soil wall curtain cross section anti-bending strength greatly, belong to the little compacted type cement-soil the gather materials on the spot retaining wall curtain that intercepts water;

C, with straightway body of wall shape curtain can the synthetic I shape of set of variations, the underground curtains of various ways such as dual wall curtain shape, T-shaped, to satisfy the intercept water needs of retaining soil of different foundation ditches.

The concrete implementing process of the inventive method is: (1), earlier wherein device of same specification model is started agitator and turn clockwise and be pressed into predetermined soil layer gradually (for stating convenience, the device that is pressed into is earlier abbreviated as 1. device, after the device that is pressed into abbreviate 2. device as, down together), the soil body is clamp-oned in the device in succession; (2), will be 2. device spill guide way bottom notch be inserted in and 1. be pressed into predetermined soil layer more gradually in the device convex guide way, start the agitator soil body that turns clockwise when burying simultaneously and clamp-on in the device synchronously; (3), because the restriction of guide way, 1. 2. device is closely arranged side by side in predetermined soil layer depths under the situation that is full of the original state soil body, the interior soil body of device has been stirred into the uniform soil particle; (4), changing 1., device fuel feeding direction makes the rotation of agitator inhour, whitewashing (powder) and upwards slowly promote 1. device simultaneously, cement-soil is carried under the double action in deadweight and agitator screw inclined plane, uninterrupted outflow is filled device in succession and is stayed cavity in the 1. device, and 1. device cement-soil unit curtain section forms; (5), the clamping of static(al) stake machine 1. device advance and be equal to 2. the long back gauge (the 2. released clamping of device when advancing) in device cross section approximately, 1. behind the device alignment fiducials point 2. device clamping is motionless once more by the stake machine in position, then will be 1. during device spill guide way bottom notch cover buries 2. device convex guide way be pressed into predetermined soil layer gradually, process of press in starts agitator simultaneously and turns clockwise, and the soil body is clamp-oned in succession; 2. 1. two devices are closely arranged side by side under the situation that is full of the original state soil body, and the soil body has been stirred into the uniform soil particle in the device; (6), will 2. think highly of multiple the 4th step, 2. device cement-soil unit curtain section shaping; (7), the clamping of static(al) stake machine 2. device advance and be equal to 1. the long back gauge (the 1. released clamping of device when advancing) in device cross section approximately, 2. behind the device alignment fiducials point 1. device clamping is motionless once more by the stake machine in position, will be 2. during device spill guide way notch cover buries 1. device convex guide way be pressed into to predetermined soil depth, starting agitator when burying simultaneously turns clockwise, the soil body is clamp-oned in succession, 1. 2. arranged side by side again under the situation that is full of the original state soil body, and the soil body has been stirred into the uniform soil particle in the device; (8), will 1. think highly of multiple the 4th step, 1. device cement-soil unit curtain section is shaped again; (9), 1. the clamping of static(al) stake machine thinks highly of multiple the 5th step, circulation successively; Get its a kind of enforcement corner sealing according to this worker method corner mode when needing corner, form the good underground waterproof of man of cement-soil of integrally closed that meets the foundation ditch shape; Device promotes the cavity (comprising the cavity that guide way stays) that stays and is carried under the double action at gravity and screw inclined plane by the cement-soil after stirring, the uninterrupted outflow gives immediately fullly in install, and makes mixture reach zero-clearance between unit curtain section and the unit curtain section in the stratum and is connected and forms continuous underground waterproof and only ooze the curtain curtain.

The waterproof enclosure method of the inventive method curtain corner comprises that T type sealing method, dual sealing method and right angle seal three kinds of methods.

The present invention compared with prior art, its environmental protection effect is good, economic benefit is obvious, the curtain moulding is safe and reliable, it is extensive to use the scope of application, construction technology is convenient simple and direct, shortens construction period.

Description of drawings:

Fig. 1 is the structural principle schematic diagram of shaped device of the present invention.

Fig. 2 is Figure 1A-A cross section sectional structure principle schematic.

Fig. 3 is the construction technique principle schematic diagram of the inventive method.

The specific embodiment:

Also be described further in conjunction with the accompanying drawings below by embodiment.

Present embodiment comprises main part, guide way part and three parts of agitator, it comprises fundamental segment 1, active section 2, band vibrator bearing convex guide way 3, band vibrator bearing spill guide way 4, convex guide way 5, spill guide way 6, vertical convex contiguous block 7, vertical spill contiguous block 8, attachment screw 9, horizontal contiguous block 10, oil-in 11, oil-out 12, grouting port 13, agitator 14, agitator fixed support 15, shaft 16, in-line blade 17, slip casting passage 18, helical blade 19, nozzle 20, dither 21 and gripper shoe 22 components of machine.

The present embodiment main part is made up of fundamental segment 1, active section 2, vertical convex contiguous block 7, vertical spill contiguous block 8, attachment screw 9, horizontal contiguous block 10 and gripper shoe 21; Long limit 〉=the 300mm in the cross section of fundamental segment 1 and active section 2, minor face is 〉=many kinds of cross sections of 100mm, cross sectional shape is rectangle or oval or pipe circle or the horizontal shaped double tube of ∞, with the rectangle cross section is commonly used, interior empty, inside and outside consistent size up and down,, the equal open-ended in top and bottom is straight-through, surface, two long limits is straight, two minor face outer edge surfaces are provided with the guide way of given shape, and fundamental segment 1 and active section 2 tops are respectively equipped with for the support bracket fastened screw of agitator is installed, and this screw is consistent with level connection pitch, one hole is dual-purpose, is convenient to spreading or agitator is installed; Fundamental segment 1 length is fixed, and to meet the transportation standard, active section 2 is 2～4 meters plurality of specifications; The basic function of active section 2 is to adopt contract mouth connected mode and fundamental segment 1 any spreading adapting to different engineering foundation depth demands, and contract mouth junction is with vertical convex contiguous block 7, vertically spill contiguous block 8 and horizontal contiguous block 10 are strengthened the rigidity and the intensity of connecting portion; Specific practice is at contract mouth connecting portion up and down in the certain distance scope, main body frame minor face face is made several convex concave notches, and the concave-convex notch of same number, size is also made at vertical convex contiguous block 7, vertical spill contiguous block 8 and the corresponding position of main body frame minor face face, vertical contiguous block concave-convex notch embeds mutually with main body frame minor face face convex concave notch, screw is fastening in addition, is very helpful to the shear strength of intensifier; The cross sectional shape consistent size of convex concave contiguous block 7,8 and corresponding convex concave guide way 5,6 has length and function difference only, connects and the two big functions that lead so vertical contiguous block has; Huge bending moment when burying for opposing is provided with horizontal contiguous block 10 on the long limit in main body frame cross section, contract mouth junction, is connected with main body to strengthen the strength and stiffness of connecting portion with screw 9; In order to make apparatus main body not yielding under complicated applied force situations such as huge chucking power and pressure pull out force, except increasing static(al) stake machine clamping jaw and apparatus main body contact pressure area, establish double-shaft mixers 14 and steel bracing plate 22 in the device of the long edge lengths＞0.70m in main body inside casing cross section, the gripper shoe 22 of not establishing of the long edge lengths ≯ 0.70m in cross section only is provided with the single shaft agitator, spacing is set gripper shoe 22 and stroke of static(al) stake machine piling cylinder just in time coincide, guarantee that each clamping jaw just in time is positioned at gripper shoe 22 places, with the non-deformability of intensifier, thereby the pressure that improves the stake machine is pulled out effect.

The guide way part of present embodiment is made up of components of machine such as band vibrator bearing convex guide way 3, band vibrator bearing spill guide way 4, convex guide way 5, spill guide way 6, convex contiguous block 7, spill contiguous block 8, attachment screw 9 and dithers 21; The cross section of convex guide way 5, spill guide way 6 can be made into dovetail shaped, cylindric or multikeyway shape butt joint guidance mode, convex guide way 5 bottoms are inserted in the dovetail groove orifice and along dovetail groove from spill guide way 6 tops and are slided up and down, or spill guide way bottom notch be inserted in the convex guide way the top and can slide up and down along dovetail groove equally, because the constraint of the given shape of guide way, when cooperating, can only do the convex-concave guide way sliding up and down and can not be to other direction displacements; The whole long face that divides of the two frame minor face faces that two convex concave guide waies are vertical with long limit, device cross section horizontal axis is respectively fixed, the center overlaps, band vibrator bearing convex guide way 3, band vibrator bearing spill guide way 4 and convex contiguous block 7, the cross sectional shape of spill contiguous block 8 is with convex- concave guide way 5,6, respectively with apparatus main body up and down corresponding guide way align and form corresponding and elongated two guide waies that place the main body section minor face respectively of main body, and connect with convenient with attachment screw 9 and to install and maintenance, existing guide way function plays again and connects or the vibrator effect is installed; When being used, the shaped device of two band given shapes can only be that guide way phase fit is done mutually and slided up and down, this cement-soil mixture of just being doomed to be stirred can only form solid shape in composite set, after promoting, one of them device filled and promoted the not set cement earth mixtures that the guide way shape is coincide on every side at the device joint portion guide way that does not promote, the device that does not promote is promoted subsequently, mix by the cement soil phase of ot-yet-hardened with former filled at the guide way periphery for the cement-soil that flows out in install, so the bonding surface between the stream oriented device just becomes the mixing combination of predetermined convex-concave notch-like, two unit curtain sections just connect into one and help the whole curtain of impervious groove shaped, make the water can not be from the joint portion seepage; Vibrator is cylindrical dither, band vibrator bearing convex guide way 3 is provided with for the cylindrical cavity that a vibrator 21 is installed, two ear centers of band vibrator bearing spill guide way 4 respectively are provided with for the cylindrical cavity that a vibrator 21 is installed, two vibrators are installed side by side, band vibrator bearing guide way 3,4 all fix with screw and main body, cable is by the access vibrator that extends of circular channel in the guide way, the amplitude that Vibration on Start-up device 21 causes transfers the soil body to moving adsorbed state to the both quiet adsorbed state of fixed timeliness that device is produced, can effectively reduce device and promote resistance, simultaneously cement-soil is played the vibratory compaction effect, make body of wall more closely knit, intensity obviously improves.

The agitator of present embodiment is made up of components of machine such as oil-in 11, oil-out 12, grouting port 13, agitator 14, agitator fixed support 15, shaft 16, in-line blade 17, slip casting passage 18, helical blade 19 and nozzles 20; Agitator 14 usefulness attachment screws 9 are fixed on the main body top by agitator fixed support 15 but slide up and down mutually when not hindering stream oriented device arranged side by side, can change at any time as required; The double-shaft mixers of laying of the limit axis length of side＞0.7m is grown in main body inside casing cross section, long limit, the cross section axis length of side ≯ 0.7m device is laid the single shaft agitator, agitator 14 is provided with oil-in 11 and oil-out 12, be connected with static(al) stake machine hydraulic system by oil inlet and outlet 11,12 usefulness oil pipes, change the oily direction of turnover, can make agitator 14 positive and negative rotations; The a bit of distance in shaft 16 bottoms is provided with helical blade 19, this helical blade has the conveying function that creeps into and make progress when clockwise rotating, mainly be being pressed into and the soil body in the access to plant being carried toward top rapidly of servicing unit, then have downward conveying function during the inhour rotation, impel mixture in device, immediately to flow out; Shaft 16 middle and upper parts are provided with the very high in-line blade 17 of multiple tracks intensity, and smashing the soil block in the access to plant also, mandatory stirring makes heterogeneity ground mix even; Character according to ground, design mixing time in advance, emitted dose, after treating that device inner chamber ground is stirred or is broken into particle of uniform size, shaft 16 beginning inhour rotations, grouting port 13 usefulness pipelines are connected with duster with the outer pulp shooting machine of machine, start whitewashing or duster, slurries or powder then eject from the nozzle 20 of end through slip casting passage 18 from grouting port 13, stake machine clamping device slowly promoted simultaneously until breaking away from another device guiding body when nozzle 20 sprayed slurries or dry powder, stopping agitator 14 during built on stilts rotates, slip casting also stops spraying, and the underground curtain section of cement-soil is shaped.

Present embodiment is first with pile-forming machine perching to the step of the underground waterproof of man hydrostatic profile of cement-soil, and leveling is aimed at ground and discharged appropriate curtain axis and unit curtain curtain reference point, and with this as the starting point, a stake machine is advanced along the axis directions of rays, can not fall back; Select the shaped device combination of two same model specifications;

Then, the first step, earlier 1. device alignment fiducials point be pressed into gradually predetermined soil layer (abbreviate the shaped device that is pressed into for the first time as 1. device, after the shaped device that is pressed into abbreviate 2. device as, down together), start agitator when burying and turn clockwise, the soil body is clamp-oned in the device in succession;

Second step, stake machine clamping 2. device advance 1. long limit, device cross section ask to join one equidistant (before advancing 1. device unclamp clamping, be convenient to a machine walking), aim at two unit curtain segment bases on schedule, at this moment with 1. device clamping original position is motionless, will be 2. device spill guide way bottom notch be inserted in 1. that device convex guide way notch is pressed into predetermined soil layer gradually, burying starts the agitator soil body that turns clockwise simultaneously and clamp-ons in the device synchronously;

The 3rd step, because the restriction of convex-concave dove-tail guide way, 1. 2. device be pressed into or withdrawal process in be (down with) closely side by side all the time, the soil body has been stirred into the uniform soil particle in the device when arriving predetermined soil depth;

1. the 4th go on foot, change, and device fuel feeding direction allows the agitator inhour rotate, whitewashing (powder) simultaneously also upwards slowly promotes 1. device, cement-soil is carried under the double action in deadweight and screw inclined plane, uninterrupted outflow is filled shaped device in succession and is stayed cavity in the 1. device, when treating 1. device end built on stilts, agitator stops operating and whitewashes in (powder), and 1. device cement-soil unit curtain section forms;

The 5th step, the clamping of static(al) stake machine 1. device advance be equal to approximately 2. the long back gauge in device cross section (when advancing 2. device unclamp clamping, be convenient to a machine walking), 1. device aim at the 3rd unit curtain segment base on schedule after 2. device clamping is motionless once more by the stake machine, then will be 1. during device spill guide way bottom notch cover buries 2. device convex guide way notch be pressed into predetermined soil layer gradually, start agitator when burying and turn clockwise, the soil body is clamp-oned stirring in succession; 2. 1. two devices are closely arranged side by side under the situation that is full of the original state soil body, and the soil body has been stirred into the uniform soil particle in the device;

2. the 6th go on foot, change, and device fuel feeding direction makes the rotation of agitator inhour, whitewashing (powder) simultaneously also upwards slowly promotes 2. device, cement-soil is carried under the double action in deadweight and screw inclined plane, uninterrupted outflow is filled shaped device in succession and is stayed cavity in the 2. device, when treating 2. device end built on stilts, agitator stops operating and whitewashes in (powder), and 2. device unit cement-soil curtain section is shaped, and combine with 1. device cement-soil unit curtain section and to connect into 1.+2. integral body;

The 7th step, the clamping of static(al) stake machine 2. device advance be equal to approximately 1. the long back gauge in device cross section (before advancing 1. device unclamp clamping, so that stake machine walking), 2. device aim at the 4th unit curtain segment base on schedule after 1. device clamping is motionless once more by the stake machine, at this moment will be 2. device spill guide way bottom notch overlap again bury in 1. device convex guide way notch be pressed into to predetermined soil depth, starting agitator simultaneously turns clockwise, the soil body is clamp-oned stirring in succession, 1. 2. device is arranged side by side again in predetermined soil depth under the situation that is full of the original state soil body, and the soil body has been stirred into the uniform soil particle in the device;

1. the 8th go on foot, change, and device fuel feeding direction makes the rotation of agitator inhour, whitewashing (powder) simultaneously also upwards slowly promotes 1. device, cement-soil is carried under the double action in deadweight and screw inclined plane, uninterrupted outflow is filled shaped device in succession and is stayed cavity in the 1. device, when treating 1. device end built on stilts, agitator stops operating and whitewashes in (powder), and 1. device the 3rd elementary section cement-soil curtain is shaped again, so underground curtain is for 1.+2.+1.=three an elementary section connection is whole;

The 9th step, the clamping of static(al) stake machine 1. device advance be equal to approximately 2. the long back gauge in device cross section (before advancing 2. device unclamp clamping, walking with convenient stake machine), 1. device aim at behind the 5th elementary section curtain reference point 2. device by the stake machine once more clamping keep original state in the soil, will be 1. device spill guide way bottom notch be inserted in 2. that device convex guide way notch is pressed into to predetermined soil depth again, starting agitator when burying simultaneously turns clockwise, the soil body is clamp-oned stirring in succession, so 2. 1. device will be arranged side by side once more under the situation that is full of the original state soil body, and the soil body has been stirred into the uniform soil particle in the device, successively circulation.

When the underground curtain corner of present embodiment sealed, shaped device must all be extracted and can implement; For making the corner closure intact, after the stake machine moves predetermined angular, readjust and aim at another curtain section axis and unit curtain segment base on schedule the time, and inspection and in type curtain distance must meet sealing and requires distance, the spill guide way part of first shaped device being pressed into behind the corner is clamp-oned by force in the unit curtain section of combined ot-yet-hardened or before straightway last location curtain Duan Wei solidifies with overlapping by force its convex guide way part in a close face length limit, overlapping consciously guide way part before both first shaped device behind the corner and former curtain Duan Zaiwei having been solidified, to strengthen sealing, the different requirements of waterproof only being oozed according to engineering, select T shape corner sealing method or dual sealing method or right angle sealing method to implement the corner sealing, after the corner sealing, with this as the starting point, the stake machine is advanced along new curtain axis directions of rays, repeat two～nine steps of above-mentioned steps, so circulation just forms the underground continuous curtain curtain of closed cement-soil that adapts to the foundation ditch shape reliably to the foundation ditch periphery; Shaped device promote the cavity (comprising the cavity that guide way stays) stay by the cement-soil after stirring under double action, in the shaped device uninterrupted flow out give immediately full, just between elementary section and elementary section notch, reach mixing before the mixture that flows out does not solidify and combine, help impervious good integrity, curtain shape induration that intensity is high so just formed.

Claims (3)

1. the underground waterproof of man static pressure type of a cement-soil shaped device is characterized in that the cross section comprises interior empty rectangle or oval or pipe circle or the horizontal shaped double tube of ∞, and its structure is divided into main body, guide way, agitator three parts; Described main part is made up of fundamental segment and active section; Outside dimension in fundamental segment and the active section, mechanical strength properties are consistent, the length difference, fundamental segment length is fixed, active section length is 2～4 meters, fundamental segment adopts the contract mouth to dock with active section, and implement to be connected total length with the adjusting device main body, modifier embedded depth with vertical contiguous block and horizontal contiguous block and screw; Described guide way part is made up of the corresponding two groups of guide waies of convex concave, at the wherein simultaneously whole long convex guide way that is provided with of device minor face, guide way comprises the butt joint of convex-concave dovetail groove type, column type butt joint and multi-groove type butt joint, the whole long spill guide way of establishing of corresponding another side minor face, the device of joining two same model specifications during construction is a combination, the mutual wedging of convex-concave guide way also only can slide up and down mutually, the vertical elongated direction of guide way is provided with by the function segmentation, in the lower body part guide way dither is installed, the convex guide way of this length section scope has a cylindrical cavity that can supply to install circular vibrator, respectively being provided with one in two lugs of concave portions can be for the cylindrical cavity that circular vibrator is installed, can lay two vibrators side by side, this section guide way is fixed with screw and main body, cable is by the access vibrator that extends of circular channel in the guide way, the amplitude that vibrator causes is that quiet adsorbed state transfers moving adsorbed state to the soil body to the fixed timeliness that device is produced, effectively reduce device and promote resistance, simultaneously cement-soil is played the vibratory compaction effect and make curtain closely knit; Joint and the guide way section that is connected the length position, lays the vibrator position that saves all adopt screw and main body affixed, other position guide waies adopt welding, welding all keeps center line vertical consistent with appearance profile with the affixed guide way section of screw, so that guide way slides up and down freely mutually; Described agitator partly comprises agitator, oil-in, oil-out, grouting port, shaft, in-line blade, helical blade, passage and nozzle, and agitator is fixed on the device overhead fixed support, does not hinder the device of two parallel connections to slide up and down; By obtaining pressure oil with oil pipe from static(al) stake machine hydraulic system, supply with the agitator power source into and out of hydraulic fluid port; Changing the fuel feeding direction makes agitator produce positive and negative rotation; The stirrer shaft center is provided with cement paste or the unimpeded slip casting passage of dry powder, the grouting port of slip casting passage inserts outer mudjack of machine or blow gun by pipeline, curing compound goes out cement paste or water-setting powder or pulverized limestone or coal powder along pipeline via grouting port, passage, nozzle ejection, fully mix and stir with the soil particle that stirs in advance in the device, produce physics chemical action between curing compound and the soil particle and condense into curtain shape induration.

2. the underground waterproof of man static pressure type of cement-soil forming method, it is characterized in that implementing process is: (1), earlier wherein device of same specification model is started agitator and turn clockwise and be pressed into the device that predetermined soil layer is pressed into earlier gradually and be called 1. device, after the device that is pressed into be called 2. device, the soil body is clamp-oned in the device in succession; (2), will be 2. device spill guide way bottom notch be inserted in and 1. be pressed into predetermined soil layer more gradually in the device convex guide way, start the agitator soil body that turns clockwise when burying simultaneously and clamp-on in the device synchronously; (3), because the restriction of guide way, 1. and 2. device is closely arranged side by side in predetermined soil layer depths under the situation that is full of the original state soil body, the interior soil body of device is stirred into the uniform soil particle; (4), changing 1., device fuel feeding direction makes the rotation of agitator inhour, whitewash simultaneously and make progress and slowly promote 1. device, cement-soil is carried under the double action in deadweight and agitator screw inclined plane, and uninterrupted outflow is filled device in succession and stayed cavity, 1. device cement-soil unit curtain section formation in the 1. device; (5), the clamping of static(al) stake machine 1. device advance and be equal to 2. the long back gauge in device cross section, 2. the released clamping of device when advancing, 1. behind the device alignment fiducials point 2. device clamping is motionless once more by the stake machine in position, then will be 1. during device spill guide way bottom notch cover buries 2. device convex guide way be pressed into predetermined soil layer gradually, process of press in starts agitator simultaneously and turns clockwise, and the soil body is clamp-oned in succession; 2. and 1. two devices are closely arranged side by side under the situation that is full of the original state soil body, and the soil body is stirred into the uniform soil particle in the device; (6), will 2. think highly of multiple (4) step, 2. device cement-soil unit curtain section shaping; (7), the clamping of static(al) stake machine 2. device advance and be equal to 1. the long back gauge in device cross section, 1. the released clamping of device when advancing, 2. behind the device alignment fiducials point 1. device clamping is motionless once more by the stake machine in position, will be 2. during device spill guide way notch cover buries 1. device convex guide way be pressed into to predetermined soil depth, starting agitator when burying simultaneously turns clockwise, the soil body is clamp-oned in succession, 1. device and 2. device is arranged side by side again under the situation that is full of the original state soil body, and the soil body is stirred into the uniform soil particle in the device; (8), will 1. think highly of multiple (4) step, 1. device cement-soil unit curtain section shaping; (9), 1. the clamping of static(al) stake machine thinks highly of multiple (5) step, circulation successively; Get its a kind of enforcement corner sealing according to common corner mode during corner, form the underground waterproof of man of cement-soil of the sealing that meets the foundation ditch shape; Device promotes the cavity that stays, comprise the cavity that guide way stays, carry under the double action at gravity and screw inclined plane by the cement-soil after stirring, the uninterrupted outflow gives immediately fullly in install, and makes mixture reach zero-clearance between unit curtain section and the unit curtain section in the stratum and is connected to form continuous underground waterproof and only oozes curtain.

3. the underground waterproof of man static pressure type of cement-soil according to claim 2 forming method is characterized in that the waterproof enclosure method of curtain corner comprises T type sealing method, dual sealing method and right angle sealing method.

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