CN208668408U - The passive type of follow-up synchronous with whirl spraying anchor cable is without structure type umbrella enlarged footing - Google Patents

The passive type of follow-up synchronous with whirl spraying anchor cable is without structure type umbrella enlarged footing Download PDF

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CN208668408U
CN208668408U CN201820999761.6U CN201820999761U CN208668408U CN 208668408 U CN208668408 U CN 208668408U CN 201820999761 U CN201820999761 U CN 201820999761U CN 208668408 U CN208668408 U CN 208668408U
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umbrella
whirl spraying
cable
drilling rod
disk
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刘晓理
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刘晓理
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Abstract

The utility model discloses the passive types of follow-up synchronous with whirl spraying anchor cable without structure type umbrella enlarged footing, expand body device and several steel strand wires including whirl spraying drilling rod, umbrella, it includes the umbrella folding bar group being made of several folding rods that the umbrella, which expands body device, and it is successively movably set in guiding cap, cable quadrant, threading disk and rear supporting plate on whirl spraying drilling rod from front to back, the whirl spraying drilling rod is multi-diameter shaft, cable quadrant is set in the path section of whirl spraying drilling rod, threads disk and rear supporting plate is set in the major diameter section of whirl spraying drilling rod;Bearing is provided between cable quadrant and whirl spraying drilling rod variable diameter step, the bearing is set in whirl spraying drilling rod path section;The front end of each folding rod is connect with cable quadrant, and rear end is connect with threading disk, and activity passes through rear supporting plate, threading disk is connect with cable quadrant from back to front for the front end of the steel strand wires;The steel strand wires and folding rod are uniformly arranged around whirl spraying drilling rod.

Description

The passive type of follow-up synchronous with whirl spraying anchor cable is without structure type umbrella enlarged footing
Technical field
The passive type of the utility model follow-up synchronous with whirl spraying anchor cable is related to geotechnical engineering neck without structure type umbrella enlarged footing Domain, be applied particularly to room build, traffic, railway, water conservancy and hydropower, people's air defense, the provisional pattern foundation pit supporting structure of every profession and trades such as underground engineering, forever Long property slope retaining, anti-float anchor rod anchor cable etc..
Background technique
Anchor cable: the anchor cable that geotechnical engineering field uses refers to that single beam~several beams steel strand wires are combined together as stress Muscle passes through the bored grouting in Rock And Soil and places principal rod formation anchoring body, so that drawing-resistant function is played, commonly used in deep base The unstable Rock And Soil of slope surface is fixed by panel or pile structure in the Harnessing of Landslide of hole or side slope, outer end, the other end It is then anchored in the stabilization Rock And Soil in deep.Anchor cable is divided into drawing according to the internal stress characteristics of anchoring body (i.e. cement slurry induration) Power type anchor cable, pressure anchor wire, tension and compression composite type anchorage cable, pressure dispersing type (segmentation pressure-bearing type) anchor cable etc..
Initial anchor cable is substantially tension type anchor cable, and meaning refers to that anchoring body bears to draw because bonding with steel strand wires and answers Power, tension type anchor cable are the component of the frictional force between the cement slurry being perfused using in the duct that drills and hole wall Rock And Soil as antiskid Resistance makes slip-crack surface in Rock And Soil be in impaction state, to efficiently control the displacement of unstable Rock And Soil, promotes it steady It is fixed, achieve the purpose that Landslide and crag, danger stone.The concept of pressure anchor wire refers to through the jail on the anchor cable in drilling deep Admittedly adhering to some supporting bodies (its diameter is less than bore diameter and is mounted on anchor cable), the external drawing that supporting body bears anchor cable Load passes to cement slurry induration, so that cement slurry induration is not subjected to the tensile stress of steel strand wires, then bears supporting body Compression, the frictional force that can give full play to deep ground hole wall in this way play work together with the frictional force of superficial part ground hole wall With to avoid the progressive failure mode from outside to inside of tension type anchor cable.It is, in general, that the anchor force of tension type anchor cable It is low, and the anchor force of pressure-type is higher.But no matter tension type or pressure anchor wire, they have a common feature, are exactly The geometry of anchoring body is in elongated rod-shaped or oval column, the source of their anchor force be all borehole wall and anchoring body it Between frictional force, that is to say, that the mechanical relationship feature between rock soil medium and anchoring body can be referred to as friction-type Anchor cable, this has been doomed even pressure anchor wire, and when needing higher bearing capacity in engineering practice, designer can not only yet Economically increase anchor hole diameter and length.Meanwhile in soft rock and soil layer, in recent years it is found that this kind of anchor shaft anchor cable tool There is very important creeping characteristic, this makes the design of permanent work and geotechnical engineering design field is controlled to deform under the new era It is made as evolution of objective and puzzlement occurs.
Enlarged footing anchor shaft anchor cable is also known as enlarging anchor rod, expands body anchor cable, is domestic twenty years ago with regard to developed one kind Class, it mainly solves the anchor shaft anchor cable anchor force of elongated rod-shaped or oval column friction-type original in deep basal pit and slope retaining Insufficient problem, it is because the elongated rod-shaped before the geometrical characteristic of its anchoring body is different from is (or oval that this title, which is got, Column), but since it is born, extended stationary periods are in the stage of geometrical concept, not in structure feature, construction method, skill End is risen in art effect, academic theory holds type anchor cable.
It is well known that the anchor force of traditional elongate rod (or oval column) type is lower, and expand the anchor force of head dummy compared with It is high;It is also a kind of enlarged footing anchor cable that type anchor cable is held at end, but its mechanical characteristics is complete with the enlarged footing anchor cable on only geometric meaning It is complete different, before not yet it has been proposed that or implementing really to hold and holding type anchor cable.
Existing enlarged footing anchor cable has four major class currently on the market:
One, tension type enlarged footing anchor cable
I.e. common whirl spraying anchor cable, this anchor cable construct the spindle of a property of cement soil by the method for whirl spraying in advance Then anchor cable is sent into hole by shape, taper, oval column type enlarged footing, the load characteristic of enlarged footing induration is complete tension, Because the tensile strength of soil cement is not high, the adhesion strength between steel strand wires and soil cement is also very low, it is easy to steel strand wires quilt occur It pulls out and the case where soil cement is by drawing crack, failure mode is still that conventional friction type anchor cable has typically from outside to inside gradually It is destroyed into formula, therefore the friction-type anchor cable (i.e. tension type anchor cable) for being difficult acquisition than traditional elongate rod-type (or oval column) is higher by very More bearing capacities, and bearing capacity and unreliable and stabilization, with the critical defect in structure.
Two, pressure-bearing type bellows anchor cable
Preexisting hole first is carried out using whirl spraying as cutting power drilling stratum when construction, increases whirl spraying after reaching predetermined depth Cutting pressure carries out reaming, whirl spraying drilling tool is then log out, then anchor cable and pouch are pushed to reaming position with manpower, later with special The pressure grouting process expansion pouch of door forms cement slurry induration enlarged footing.
It has difference to be substantially with tension type anchor cable: it is mounted with counter-force anchor slab, it will by the extruded sleeve of anchor cable end The pulling force that anchor cable is born is converted into the pressure to cement slurry or soil cement induration, although its bearing capacity expands compared with tension type Head anchor cable has a degree of promotion again, but because also too small for anchor slab size relatively enlarged footing sectional dimension, soil cement or Without corresponding arrangement of reinforcement in cement slurry enlarged footing, when being pressurized, stress concentrates on core, be pressurized centered on the stress characteristic of enlarged footing, Periphery tension, anchor slab pressure can only be partially converted into the pressure to Rock And Soil, and failure mode is still that soil cement or cement slurry expand Major part then anchor slab deformation and is extracted with steel strand wires together by drawing crack, so it is neither pressure anchor wire before, also not It is that type anchor cable is held at real end, a kind of only middle transition form.
In addition in practice, to the three of some special soft fluid-plastic stratums especially Pearl River Delta area high two low weak soils (with And other Recently deposited soils, barged-in fill etc.), or the drift sand formation formed by silt, silty sand, pouch is by from internal grouting pressure It can smoothly overcome the soil cement slurry confining pressure outside pouch to open soil cement slurry exclusion to realize that pouch is expanded when power, and can It opens the soil cement slurry barrier outside the neat slurry of secondary pouring in pouch and pouch to improve steel strand wires and cement to play Starch the effect of adhesion strength between induration;But the stratum of two low weak soil high for non-three, non-drift sand formation, especially interior ground ground Normal consolidation cohesive soil and over-consolidation strata and fine sand, middle sand, coarse sands layer, gravel layer, the sandstone shale layer in area, then often The hole that collapses is encountered, pouch is caused to be difficult to arrive at pre-expansion hole site;Even if reaching, and because being deposited in whirl spraying reaming or mechanical hole reaming metapore Sand group, clod, stone are expired, they not only constitute confining pressure, but also the space of pouch expansion is also tied up by them (unless it Be all easily discharged out of the hole), be difficult to be allowed to expansion according to the perfect condition of design when so that being in the milk inside the pouch to become cylindric Enlarged footing;And grouting pressure standard is not easy to control, and it is broken bag that grouting pressure is slightly higher sometimes, this just can not more form theoretical expansion Substantially.
In terms of comprehensive, such significant deficiency for expanding body anchor cable is exactly: can not provide corresponding stress for cement slurry enlarged footing Tendons skeleton can only form the enlarged footing of a simple cement property, be difficult acquisition specific thrust type enlarged footing anchor cable and be higher by very More bearing capacities, this is still a structural defect.Further more, its economical cost is also excessively high.
Three, whirl spraying is included with beam anchor cable
It include including recyclable whirl spraying anchor cable currently on the market, these whirl spraying anchor cables can not mention for cement slurry enlarged footing For corresponding widened stress tendons skeleton, the enlarged footing that can only form a simple property of cement soil is similar with bellows anchor cable, Although because anchor slab size is smaller, and the size of soil cement induration is very big and intensity is not high, cement there are also installed counter-force anchor slab Native enlarged footing is easy to by drawing crack, is not still really to press for the stress distribution feature and failure mode when from enlarged footing load-bearing Power type anchor cable, let alone type anchor cable is held at end, this anchor cable be similarly difficult to obtain specific thrust type enlarged footing anchor cable be higher by it is very much Bearing capacity, and bearing capacity and unreliable and stabilization, still have the critical defect in structure, are still a kind of transitional form.
Four, the rear plant type with reinforcement cage skeleton expands body anchor cable
Such anchor cable makees preexisting hole, pre- reaming to soil layer in a manner of whirl spraying, to rock stratum then with down-the-hole air hammer make preexisting hole, Make pre- reaming with mechanical reamer, reaming position will be pushed to skeleton expansion body anchor cable with manpower later, then with hydraulic side Formula opens reinforcement cage skeleton, finally applies cement slurry enlarged footing with common grouting way.This enlarged footing has had advanced to will Supporting body pedestal (i.e. counter-force anchor slab) expands, and is turned into heavy in section reinforcement cage skeleton pedestal, this is theoretically substantially increased The bearing capacity of anchor cable, it may be said that already have the blank that type anchor cable is held at end.But it still has three big defects: 1, frequently encountering Collapse hole, and the implantation for expanding body structure relies on manpower push, it is difficult to reach pre-expansion hole site.2, common grouting way is difficult to accomplish cement It is body formed to starch the hope expansion pressed and designed, in fact excavation site also indicates that the filling inside steel reinforcement cage and wraps up reinforcing bar usually It is crumby mud or sand, the high-bearing capacity potentiality for causing steel reinforcement cage to expand body structure itself are difficult to bring into play.This enlarged footing It is equally difficult to obtain the friction-type anchor cable than traditional elongate rod-type (or oval column) and is higher by many bearing capacities.3, with hydraulic drive Flowing mode opens steel reinforcement cage, causes cost to occupy high.
Above-mentioned whirl spraying anchor cable existing in the market, bellows anchor cable can not provide corresponding widened stress for cement slurry enlarged footing Tendons skeleton, leads to that its bearing capacity is high, unstable quality;And the rear plant type band reinforcement cage skeleton of manpower push is used to expand body anchor cable The Chang Yin factors such as hole that collapse cause it to be difficult to attach to position again, and expand body using grouting method and be difficult to form, cause enlarged footing quality without It ensures, high-bearing capacity potentiality cannot play;And this postposition type is expanded body anchor cable and is expanded using hydraulic-driven skeleton, it is caused to make Valence is high.
Utility model content
The utility model aim is to provide the passive type of follow-up synchronous with whirl spraying anchor cable without structure type umbrella enlarged footing, solution Certainly existing all kinds of whirl spraying anchor cables, bellows anchor cable can only form cement slurry enlarged footing, can not provide corresponding widened and water The stress tendons skeleton that mud enlarged footing matches causes its bearing capacity lower and unstable;And rear plant type band reinforcement cage skeleton Expanding the body anchor cable Chang Yin factors such as hole that collapse causes it to be difficult to attach to position, and expands body using grouting method and be difficult to ensure asking for Forming Quality Topic.
The passive type of the utility model follow-up synchronous with whirl spraying anchor cable passes through following technical sides without structure type umbrella enlarged footing Case is realized:
The passive type of follow-up synchronous with whirl spraying anchor cable expands body dress without structure type umbrella enlarged footing, including whirl spraying drilling rod, umbrella It sets and several steel strand wires, it is characterised in that: it includes the umbrella folding being made of several folding rods that the umbrella, which expands body device, Bar group, and the guiding cap, cable quadrant, the threading disk that are successively movably set on whirl spraying drilling rod from front to back, the whirl spraying drilling rod For multi-diameter shaft, cable quadrant is set in the path section of whirl spraying drilling rod, and threading disk is set in the major diameter section of whirl spraying drilling rod;In bracing wire Bearing is provided between disk and whirl spraying drilling rod variable diameter step, the bearing is set in whirl spraying drilling rod path section;
Activity is connect across threading disk with cable quadrant from back to front for the front end of each steel strand wires;
The front end of each folding rod is connect with cable quadrant, and rear end is connect with threading disk;
(front end herein refers to one end close to whirl spraying drilling rod cutting end, direction be whirl spraying drilling rod drilling direction)
Further, the front end of each folding rod is hingedly connect with cable quadrant before passing through, the rear end of folding rod By hingedly being connect afterwards with threading disk.Successively activity passes through threading disk, cable quadrant to the steel strand wires from back to front, and at it Load conversion device is installed in front end end, so that steel strand wires and cable quadrant is formed back and draws connection.
Further, the folding rod includes stock and quarter butt hinged therewith, and the front end of the stock is and bracing wire Disk is hinged, and the rear end of the quarter butt is hinged with threading disk, adjusts cable quadrant and threads the spacing between disk, can make stock and short The axis of the separate or close whirl spraying drilling rod of hinge point between bar.
Further, the umbrella expands body device equipped with grout pipe, and the grout pipe is plugged in umbrella and expands on body device, Grout pipe expands in body device in umbrella and plays the role of grouting, and activity passes through and threads disk or across wearing from back to front for the front end of grout pipe Drum and cable quadrant, and form back in front end end fixing device for installing III and threading disk or cable quadrant and draw connection, in bracing wire The grout outlet of grout pipe is set between disk and threading disk, it is full to guarantee to be in the milk between cable quadrant and threading disk, it is formed ideal Umbrella induration enlarged footing;Grout pipe is connected with external defeated slurry hose in the tail portion of grout pipe, and connector should be located at whirl spraying jet stream Cut coverage except.When not needing to take static pressure grouting mode slip casting, grout pipe cancels installation.
The steel strand wires and folding rod are uniformly arranged around whirl spraying drilling rod.
Further, it drives threading disk mobile to cable quadrant movement or cable quadrant to threading disk, band external screw thread can be passed through The modes such as drilling rod rotation, hydraulic valve open or close, magnet or electromagnet realize, but then more using spring automatic reset device It is effective and economic and practical;And drive cable quadrant mobile to threading disk, can also by fixed with external force threading disk or after While supporting plate, the mode of steel strand wires is pulled out to realize.
Further, it is provided with tension reset spring between the cable quadrant and threading disk, by tensing reset spring Tension reseting elasticity, can make to thread disk mobile to cable quadrant;When whirl spraying drilling rod major diameter section is to the variable diameter step pushing tow of path section When umbrella expansion body device is entered in drilling, umbrella folding bar group is generated by the extruding of borehole wall reduces gathering movement, Pushing threading disk to generate with steel strand wires (2) simultaneously is sliding rail, the movement to steel strand wires (2) extreme direction afterwards, tenses reset spring quilt It stretches;When umbrella, which expands body device, to be entered reaming section and there are enough extending spaces, bullet is resetted in the tension for tensing reset spring Under power effect, threading disk is mobile to cable quadrant, and umbrella folding bar group is generated remote by the extruding force from cable quadrant and threading disk Deformation from whirl spraying drill rod axis, to realize the expansion opening action of umbrella folding bar group.
It is also provided with rear supporting plate behind the threading disk, while being provided between threading disk and the rear supporting plate Reset spring is opened, by opening the opening reseting elasticity of reset spring, can make to thread disk to cable quadrant movement;When whirl spraying drilling rod When major diameter section is entered in drilling to the variable diameter step pushing tow umbrella of path section expansion body device, umbrella folding bar group is by borehole wall Extruding reduce gathering movement to generate, while pushing threading disk to generate with steel strand wires (2) is sliding rail, to after steel strand wires (2) The movement of extreme direction is opened reset spring and is compressed;When umbrella, which expands body device, to be entered reaming section and have enough extending spaces, Under the opening reseting elasticity effect of opening reset spring, threading disk is mobile to cable quadrant, and umbrella folding bar group is by from drawing The extruding force of drum and threading disk, generates the deformation far from whirl spraying drill rod axis, to realize that the expansion of umbrella folding bar group is beaten Start work.
The distance between cable quadrant and rear supporting plate are L0, length L0For fixed value, the distance between cable quadrant and threading disk are L1, threading the distance between disk and rear supporting plate are L2, wherein L0=L1+L2
When original state, that is, the utility model is completed, umbrella folding bar group is in expansion state, between stock and quarter butt Distance of the hinge point apart from whirl spraying drill rod axis it is maximum, L at this time1In minimum value, L2In maximum value.When threading disk to Rear supporting plate is mobile, and the axis of the hinge point between stock and quarter butt towards whirl spraying drilling rod is mobile, until the hinge point is drawn close Whirl spraying drilling rod, i.e., when umbrella folding bar group purse up is around whirl spraying drilling rod, L1In maximum value, L2In minimum value.
It when the utility model being placed into predetermined depth position according to construction drawing design, drills, wherein to one As soil layer operating condition, be water to be sprayed directly into stratum with the front of whirl spraying spray head and lateral nozzle or cement slurry jet stream is cut Drilling is advanced with whirl spraying drilling rod major diameter section to the variable diameter step-shaped top of path section push-and-pull drum, while umbrella is rolled over while drilling Folded bar group is shunk due to the extruding by hole wall, so that the synchronous entire umbrella that follows up expands body device, when drilling reaches design reaming When section depth location, then with whirl spraying jet stream reaming, while expanding and opening umbrella folding bar group.Specifically, work progress is as follows:
When drilling: the whirl spraying spray head of whirl spraying drilling rod front end sprays low pressure water or cement from front nozzle and side to nozzle simultaneously Slurry, to cut the soil layer of hole wall, the aperture for shaping it only for guiding cap, cable quadrant, threading disk, rear supporting plate and is in gathering The umbrella folding bar group of state passes through, and draws the synchronous follow-up of steel strand wires by cable quadrant.Folding rod group is by drilling hole at this time The extruding of wall reduces gathering movement to generate, while threading disk being pushed to generate the movement to rear supporting plate.
When reaming: when drilling reaches the initial position of construction drawing design reaming section, whirl spraying drilling rod sprays while drilling High pressure~high-pressure water mud is penetrated, to cut the soil layer of hole wall, the aperture formed it into and umbrella folding bar group are in expansion state When maximum gauge match, until design reaming section terminal location, so that the expansion for umbrella folding bar group provides enough Space.After the completion of reaming section reaming, continues whirl spraying forward and creep into a small distance, expand umbrella folding bar group completely into design Hole fragment position.
Multiple is opened umbrella folding bar group: when reaming section has the expansive space of enough umbrella folding bar groups, threading Disk is moved forward with cable quadrant under the reseting elasticity effect of reset spring close to (i.e. L2Become larger, L1Become smaller) or in artificial outer drawing Steel strand wires effect drop-down drum is moved backward close to threading disk, squeezes umbrella folding bar group by from cable quadrant and threading disk Pressure, to the direction deformation far from whirl spraying drill rod axis, to realize multiple expansion of umbrella folding bar group.
After the shape folding rod group that opens umbrella again, compressed water slurry carries out the hole flushing of reaming section in the injection of whirl spraying drilling rod, deslagging is made Industry.After the completion of cleaning, the injection of whirl spraying drilling rod (or being perfused by pre-buried special grout pipe) ultralow compressed water slurry is further increased It (around include before cable quadrant and threading disk below and except umbrella folding bar group inside and around umbrella enlarged footing Face) the cement content ratio of slurry is then log out whirl spraying drilling rod, and consider to increase the total bearing capacity of umbrella enlarged footing Some cases drop-down drum have a possibility that retrogressing, should gently outer drawing steel stranded wire so that the load conversion device of its front end by straining at Drum.
Further, the folding rod, preceding hinge bar, rear hinge bar material can use reinforcing bar, carbon fiber, glass fibers Dimension etc., at this stage, from the perspective of economical and practical, preferably reinforcing bar or thick walled steel tube.
The guiding cap is movably set in whirl spraying drilling rod path section, positioned at the front side of cable quadrant, uses spiral shell with cable quadrant Line connection or welding or buckle-type connection, guiding cap can be taper, be also possible to the silo shape of cylinder after inner cone, can be using casting The production such as iron, cast steel, steel plate.
Further, the passive type of the utility model follow-up synchronous with whirl spraying anchor cable is without structure type umbrella enlarged footing, in institute If stating and being provided with arterial highway wirerope between cable quadrant and threading disk, several layers positioning ring is accordingly provided on stock, it is described One end of per pass wirerope is connect after sequentially passing through this layer of positioning ring on each stock with the other end, and blocks (every bar one with rope Card or double card) as connection, fixation.
The setting of wirerope and rope card can make to realize that circumferential drawknot, wirerope surround umbrella folding between stock and stock Bar group plays the role of ring-shaped stirrup, forms closed steel reinforcement cage, constitutes about to the bending deformation for expanding stock when body structure is pressurized Beam provides lateral confinement for cement slurry induration, to improve structure total bearing capacity.
The positioning ring is fixedly mounted on the inner or outer side wall of stock, it is preferred to use welding manner, positioning ring can Using the nut blank material of no internal screw thread.
When the length of the quarter butt of design is also longer, accordingly on the inner or outer side wall of every quarter butt be arranged positioning ring and Flexible wire ropes and rope card, i.e., be also provided with circumferential drawknot between quarter butt and quarter butt.
Preferably, when distance maximum when the hinge point between stock and quarter butt apart from whirl spraying drill rod axis, wirerope In exceptionally straight state.
Further, hinge bar before being provided between the stock and cable quadrant, the front end of the preceding hinge bar with The connection of cable quadrant can also be inserted into blind hole using welding using the drilling blind vias in cable quadrant, preceding hinge bar front end Mode is threadedly coupled with cable quadrant to connect, and guarantees construction quality angle from standardization measures, it is preferred to use threaded connection side Formula;The rear end of preceding hinge bar and the front end of stock are hinged.
Further, the quarter butt and threading disk between be provided with after hinge bar, it is described after hinge bar front end with The rear end of quarter butt is hinged, and the rear end of rear hinge bar is connect with threading disk, and welding can be selected in connection type, or using preceding hinged Used plug-in type thread connecting mode between bar and cable quadrant, while can also be used and wear rear hinge bar back end activity Drum simultaneously draws connection type in the back of rear end end fixing device for installing I, is transmitted because of expansion body structure by load conversion device The connecting portion will bear biggish tensile stress when counter-pressure, and when assembling adjustment hinge openings direction be allowed to it is radially consistent Needs, from standardization measures guarantee construction quality angle, it is preferred to use the latter, i.e., after hinge bar activity pass through threading disk after with It threads disk back and draws connection, high-strength nut can be used in the fixation device I of rear hinged rod rear end installation, the rear end with rear hinge bar It is threadedly coupled, the rear end of rear hinge bar can also be welded on using materials such as reinforcing bar, steel loops.
Further, threaded on rear hinge bar disk and it is hinged between, elastic device is also arranged with, for guaranteeing in rear hinge While extension bar is fixed sliding before and after device I is tensed, do not generated, this can be hingedly freely rotated;Elastic device can use Spring adds plain cushion or spring washer to add plain cushion etc..
Further, it is provided with opening reset spring between threading disk and the rear supporting plate, or in cable quadrant and threading It is provided with tension reset spring between disk, when umbrella, which expands body device, enters the reaming section for having enough extending spaces, makes to thread Disk moves back to initial position, and the telescopic direction opened reset spring, tense reset spring is parallel to the axis of whirl spraying drilling rod Line.
When (spring is pressure spring at this time), cable quadrant and butt when threading setting opening reset spring between disk and rear supporting plate An opening reset spring or multiple opening reset springs can be used between plate.When using an opening reset spring, it can incite somebody to action It is set on whirl spraying drilling rod, or is set in the periphery of whirl spraying drilling rod and all steel strand wires;Multiple openings can also be used to reset Spring is arranged an opening reset spring respectively on steel strand wires.
When setting tenses reset spring between cable quadrant and threading disk (spring is tension spring at this time), it can be resetted tensing Spring is set on whirl spraying drilling rod, or is arranged a tension reset spring respectively on steel strand wires, can also drilling rod together with A tension reset spring is arranged in the outside integral coating of all steel strand wires;It but is tension spring, steel because tensing reset spring at this time Silk spacing is closeer, can consume a large amount of whirl spraying ablation energy, to weaken cutting of the whirl spraying jet stream to the wall of a borehole, it is advantageous to Minor diameter tension spring is set on steel strand wires.
When setting tenses reset spring between cable quadrant and threading disk, tense the both ends of reset spring respectively with bracing wire Disk is connected with threading disk, and the corresponding position setting hook fixed ring on cable quadrant and threading disk, tenses reset spring itself The hook at both ends is hung in corresponding hook fixed ring;Annular element such as nut can be used by linking up with fixed ring, can also To use hook shaped component, it is welded to connect or is threadedly coupled with cable quadrant and threading disk respectively.
Further, load conversion device is installed in its end, load turns after cable quadrant in the front end of the steel strand wires The task of changing device is the pressure be converted to anchor cable pulling force to cable quadrant and entire enlarged footing, and load conversion device can use Anchorage and anchoring clamping piece can also use steel extruded sleeve matched with steel strand wires, carry out extruding installation with special extrusion machinery.
Fixed device II is additionally provided on rear side of rear supporting plate, it is preferable that fixed device II is corresponding with reset spring is opened It is arranged, rear supporting plate and fixed device II provide the portion of rear seat supports as to open reset spring performance opening reseting elasticity simultaneously Part;One piece of whole support board structure or muti-piece fission support board structure can be used in rear supporting plate, can be using round or polygon or ring-type The shapes such as bar shaped;According to the installation position for opening reset spring, fixed device II, which is accordingly mounted on to open on steel strand wires, to be resetted The rear of spring;When fixed device II is installed with opening reset spring for non-corresponding, the increase of drilling resistance is brought and to rear The increase of supporting plate rigidity requirement is uneconomic.
When opening reset spring is sheathed on respectively on every steel strand wires, rear supporting plate is that muti-piece fission support board structure is worn respectively It is located at the rear side for opening reset spring on every steel strand wires, or is threaded through whirl spraying drilling rod and institute for one piece of whole support board structure activity There is the rear side that reset spring is opened on steel strand wires;Fixed device II is then respectively and fixedly installed on every steel strand wires after rear supporting plate Side;
When opening reset spring integral coating is set in the outside of whirl spraying drilling rod and all steel strand wires, rear supporting plate is one piece Whole support board structure activity is threaded through the rear side that reset spring is opened on whirl spraying drilling rod and all steel strand wires;Fixed device II then divides It is not fixedly mounted on the rear side of rear supporting plate on every steel strand wires;
In the case where expanding opening umbrella folding bar group using artificial outer drawing steel stranded wire mode, opens reset spring, draws Tight reset spring and rear supporting plate cancel installation.
While will open reset spring and be set on steel strand wires, need simultaneously also to pacify rear supporting plate and fixed device II The rear side of reset spring is opened on steel strand wires with seat supports after providing, fixed device II can use matched with steel strand wires Extruded sleeve or special anchorage etc.;
In the case where not configuring opening reset spring, rear supporting plate and fixed device II also cancel installation.
Further, it is additionally provided with limiting device between cable quadrant and threading disk, for adjusting cable quadrant and threading disk Between spacing;And the geometry of the umbrella folding bar group after being opened before cement slurry sets to expansion by limiting device It carries out shaping;
When limiting device is an integrated support structure, front end is located on rear side of cable quadrant, before its rear end is located at threading disk Side, limiting device can be set on steel strand wires, can also individually be fixedly mounted (welding or be threadedly coupled etc.) in cable quadrant and It threads on disk;The adjusting of distance between cable quadrant and threading disk is realized by the length of regulation limiting device;
When limiting device is broken up into two independent individuals i.e. front limit device provided and rear limiting device, front limit device provided It must be fixedly mounted in couples on same root steel strand wires with rear limiting device, installation site on rear side of cable quadrant and is worn respectively On front side of drum;The anteroposterior position that adjusting front limit device provided and rear limiting device is passed through to the adjusting of distance between cable quadrant and threading disk It sets to realize.
When limiting device is an integrated support structure, each steel between cable quadrant and threading disk is can be used in limiting device The tubing such as steel pipe that are slidingly connected on twisted wire production, can ensure that external loads are all passed to load conversion device by steel strand wires, There is some strength again, the geometry of the umbrella folding bar group after opening before cement slurry sets to expansion can play sizing Effect, can also bear the cutting of high-pressure rotary-spray.
When limiting device is allocated as front limit device provided and rear limiting device is disposed on steel strand wires, rear limiting device can With use semi-rigid material extruded sleeve matched with steel strand wires, installed with special extrusion machinery, when after limiting device adopt When with common steel extruded sleeve, it should be also set with semi-rigid material isolation ring between threading disk, to ensure that steel strand wires can incite somebody to action External loads all pass to the load conversion device of front end end.
Further, bearing is arranged in the path section of the whirl spraying drilling rod, the bearing is located at cable quadrant and whirl spraying Between the major diameter section of drilling rod.The setting of bearing is so that whirl spraying drilling rod reduces the friction system of variable diameter step contact surface in rotation Number, so that umbrella, which expands body device, to rotate or distort therewith;The bearing preferably uses pressure bearing.
In the utility model in use, being formed for preexisting hole, pre- reaming operating condition, such as with mechanical reamer Hard shape argillic horizon, the foundation pit in lithosphere or slope retaining anchor cable, the high inclination-angle pattern foundation pit supporting structure anchor cable in general soil layer, erect Histogram to anti-float anchor rod anchor cable etc., can directly with whirl spraying drilling rod by the utility model jacking to the reaming position, still use In such a way that reset spring automatically resets, or disk or rear supporting plate will be threaded using external force factors such as the closing in positions of reaming section and will be fixed It is outer in a manner of manually pulling out steel strand wires in drilling in the case where firmly, so that umbrella folding bar group is opened expansion again, then repeatedly Whirl spraying cleaning deslagging simultaneously answers water-spray type slurry or is in the milk by pre-buried grout pipe.It is opened umbrella again when using with artificial span wire system When shape folding rod group, tenses reset spring, opening reset spring, rear supporting plate, fixed device II and cancel installation.
The utility model is provided silt inclusion enclave or agglomerate generally existing, that constitute hidden danger of quality original in drilling Eradication, exclusion condition, the enlarged footing position that makes to drill solidifies full of the pure cement slurry of ingredient and to form high-intensitive water Sludge consolidating body, it and umbrella steel reinforcement cage together form essential two aspects of expansion body structure truly, shape At qualified umbrella steel reinforced concrete expanding head anchor cable structure, the design and construction for expanding body anchor cable can be doubled up Reliability.
The utility model can also be together in series use, and then undertake a greater amount of grades of high-bearing capacity.It simultaneously can also be with The technical compatibilities such as Recyclable anchor rope combine, so that the resistance to plucking of the various anchor cables including being significantly increased containing Recyclable anchor rope is held Carry power.
Umbrella expands body structure, including cable quadrant, threading disk, load conversion device, umbrella folding bar group, cement-grouting consolidation body five A important document is narrowly said including cable quadrant, threading disk, four load conversion device, umbrella folding bar group important documents.Umbrella herein Shape expands body structure and referred to as expands body structure;It should include two aspects of reinforcing bar and concrete as the expansion body structure of engineering mechanics meaning.
The utility model compared with prior art, has the following advantages and benefits:
1, the passive type of the utility model follow-up synchronous with whirl spraying anchor cable is without structure type umbrella enlarged footing, construct it is convenient, can It leans on, while whirl spraying drilling, can either synchronize with rope, and carrying umbrella expansion body device can be synchronized and enter predetermined depth position It sets, so that low pressure rotary-spraying drilling, synchronous carrying anchor cable, the synchronous umbrella that carries expand body device, synchronous carrying grout pipe, high-pressure rotary-spray Reaming, middle pressure rotary-spraying hole flushing deslagging, ultralow pressure rotary-spraying or grout injection or composite material, molding cement slurry induration expand Head, umbrella folding bar group, which open expansion again and become these targets of umbrella steel reinforcement cage enlarged footing, focuses on a bench drill machine, a set of It accomplishs without any letup on drilling tool, phase can not be provided for cement slurry enlarged footing by both having solved previous whirl spraying anchor cable, bellows anchor cable in this way The problem of expansion stress tendons skeleton matched, and solve previous " band skeleton expands body anchor cable " because the hole that collapses causes to be difficult to be pushed to Position, grouting method expand body and are difficult to the problem of forming.
2, for the passive type of the utility model follow-up synchronous with whirl spraying anchor cable without structure type umbrella enlarged footing, structure is simple, grasps Facilitate, the gathering and expansion movement again of umbrella folding bar group can be completed by being moved forward and backward cable quadrant or threading disk, and Solve the problems, such as that original expansion body anchor cable costs various in the market are high by simplifying structure and optimization technique.
3, the passive type of the utility model follow-up synchronous with whirl spraying anchor cable is without structure type umbrella enlarged footing, wirerope and rope card Setting wirerope and umbrella folding bar group can be made to surround to form closed steel reinforcement cage, to expanding stock or short when body structure is pressurized The bending deformation of bar constitutes constraint, and provides certain lateral confinement for cement slurry induration resistance to compression, to improve structure total bearing capacity.
4, due to cement slurry induration its Compressive Bearing Capacity using umbrella steel reinforcement cage as skeleton be significantly larger than enlarged footing without The bearing capacity of tendon shape state, by the utility model and matched construction method, the armored concrete of an available high quality Enlarged footing supporting body, so that outer drawing load suffered by anchor cable is completely transferred to anchor cable end, this expands the bottom surface of body structure and all turns The pressure to rock soil medium is turned to, the source of anchor cable withdrawal resistance is no longer dependent on the frictional force of borehole wall offer, and comes completely From in build-in force, that is, end Rock And Soil Compressive Bearing Capacity, the bearing capacity being achieved in that relatively before all kinds of anchor cables obtained greatly Raising, and the creep of friction-type anchor cable can be avoided completely, here it is ends to hold type anchor cable, this with can only at most transfer deep before Hole wall frictional force avoids the pressure anchor wire of progressive failure mode from outside to inside from comparing, and has occurred that qualitative change.This is practical new Type and active umbrella enlarged footing, film pouch-type umbrella enlarged footing together, indicate that the height of this new concept of type anchor cable is held at end jointly Bearing capacity anchor cable formally occurs.
5, the passive type of the utility model follow-up synchronous with whirl spraying anchor cable has component disassembly without structure type umbrella enlarged footing It is easy for installation with connecting, it occupies little space, convenient for the miniaturization of inventory and logistics, the standardization journey of plant produced and user's assembling Degree is high, standardization, convenience conducive to construction, is conducive to the characteristics of ensureing construction quality.
Detailed description of the invention
Attached drawing herein, explanation can provide and further understand to the utility model embodiment, belong to one of the application Point, but do not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is that the passive type of present invention follow-up synchronous with whirl spraying anchor cable shows without 5 structure of structure type umbrella enlarged footing embodiment It is intended to;
Fig. 2 is that the passive type of present invention follow-up synchronous with whirl spraying anchor cable shows without 1 structure of structure type umbrella enlarged footing embodiment It is intended to;
Fig. 3 is that the passive type of present invention follow-up synchronous with whirl spraying anchor cable shows without 1 structure of structure type umbrella enlarged footing embodiment It is intended to;
Fig. 4 is that the passive type of present invention follow-up synchronous with whirl spraying anchor cable shows without 1 structure of structure type umbrella enlarged footing embodiment It is intended to;
Label and corresponding parts title in attached drawing:
1- whirl spraying drilling rod, 2- steel strand wires, 3- cable quadrant, 4- threading disk, 5- rear supporting plate, 6- grout pipe, 7- stock, 8- are short Bar, 9- wirerope, 10- positioning ring, hinge bar before 11-, hinge bar after 12-, the fixed device I of 13-, 14- load conversion device, 15- limiting device, 16- fix device II, and limiting device after 17-, the fixed device III of 18-, 19- bearing, 20-, which is tensed, resets bullet Spring, 21- guiding cap, 22- link up with fixed ring, and 23- opens reset spring, 24- front limit device provided.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached drawing, The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this Utility model is not intended to limit the scope of the present invention.
Embodiment 1
As shown in Figs 1-4, the passive type of follow-up synchronous with whirl spraying anchor cable is without structure type umbrella enlarged footing, including whirl spraying drilling rod 1, umbrella expands body device and several steel strand wires 2, it is characterised in that: it includes by several folding rod groups that the umbrella, which expands body device, At umbrella folding bar group, and be successively movably set on whirl spraying drilling rod from front to back guiding cap 21, cable quadrant 3, threading Disk 4, the whirl spraying drilling rod are multi-diameter shaft, and cable quadrant is set in the path section of whirl spraying drilling rod, and threading disk is set in whirl spraying drilling rod Major diameter section on;It is provided with bearing 19 between cable quadrant and whirl spraying drilling rod variable diameter step, the bearing is set in whirl spraying drilling rod In path section;
Activity is connect across threading disk with cable quadrant from back to front for the front end of each steel strand wires;The steel strand wires Front end after the cable quadrant, load conversion device 14 is installed in its end, the task of load conversion device is by anchor cable pulling force The pressure to cable quadrant and entire enlarged footing is converted to, load conversion device can use anchorage and anchoring clamping piece, can also use Steel extruded sleeve matched with steel strand wires carries out extruding installation with special extrusion machinery.
The front end of each folding rod is connect with cable quadrant, and rear end is connect with threading disk;The each folding The front end of folded bar is hingedly connect with cable quadrant before passing through, and the rear end of folding rod is hingedly connect with threading disk after passing through.It is described Successively activity passes through threading disk, cable quadrant to steel strand wires from back to front, and installs load conversion device in its front end end, makes steel Twisted wire and cable quadrant form back and draw connection.
The folding rod includes stock 7 and quarter butt 8 hinged therewith, and the front end of the stock is hinged with cable quadrant, The rear end of the quarter butt is hinged with threading disk, adjusts cable quadrant and threads the spacing between disk, can make between stock and quarter butt Hinge point far from or close to whirl spraying drilling rod axis.
The grout pipe is plugged in umbrella and expands on body device, and grout pipe expands in body device in umbrella and plays the role of grouting, fills The front end for starching pipe is movable across threading disk or across threading disk and cable quadrant from back to front, and dress is fixed in installation in front end end It sets III 18 and forms back drawing connection with threading disk or cable quadrant, the grout outlet of grout pipe is set between cable quadrant and threading disk, with Guarantee to be in the milk between cable quadrant and threading disk full, forms ideal umbrella induration enlarged footing;Grout pipe and external defeated slurry Hose is connected in the tail portion of grout pipe, and connector should be located at except the cut coverage of whirl spraying jet stream.When not needing to take static pressure grouting When mode slip casting, grout pipe cancels installation.
The steel strand wires, folding rod are uniformly arranged around whirl spraying drilling rod.
It drives threading disk mobile to cable quadrant movement or cable quadrant to threading disk, is more had using spring automatic reset device It imitates and economic and practical;And drive cable quadrant mobile to threading disk, it can also be by fixing threading disk or rear supporting plate 5 with external force While, the mode of steel strand wires is pulled out to realize.
It is provided between the cable quadrant and threading disk and tenses reset spring 20, it is multiple by the tension for tensing reset spring Position elastic force can make to thread disk to cable quadrant movement;When whirl spraying drilling rod major diameter section expands body to the variable diameter step pushing tow umbrella of path section When device is entered in drilling, umbrella folding bar group is generated by the extruding of borehole wall reduces gathering movement, pushes simultaneously It threads disk to generate using steel strand wires as sliding rail, the movement to extreme direction after steel strand wires, tenses reset spring and be stretched;When umbrella expands When body device enters reaming section and has enough extending spaces, in the case where tensing the tension reseting elasticity effect of reset spring, threading Disk is mobile to cable quadrant, and umbrella folding bar group is generated by the extruding force from cable quadrant and threading disk far from whirl spraying drilling rod axis The deformation of line, to realize the expansion opening action of umbrella folding bar group.
Rear supporting plate is additionally provided with behind the threading disk, while setting is opened again between threading disk and the rear supporting plate Position spring 23 can make to thread disk to cable quadrant movement by opening the opening reseting elasticity of reset spring;When whirl spraying drilling rod is big When diameter section is entered in drilling to the variable diameter step pushing tow umbrella of path section expansion body device, umbrella folding bar group is by borehole wall It squeezes to generate and reduces gathering movement, while threading disk being pushed to generate using steel strand wires as sliding rail, to extreme direction after steel strand wires It is mobile, it opens reset spring and is compressed;It is multiple opening when umbrella, which expands body device, to be entered reaming section and have enough extending spaces Under the opening reseting elasticity effect of position spring, threading disk is mobile to cable quadrant, and umbrella folding bar group is by from cable quadrant and wearing The extruding force of drum generates the deformation far from whirl spraying drill rod axis, to realize the expansion opening action of umbrella folding bar group.
In the case where expanding opening umbrella folding bar group using artificial outer drawing steel stranded wire mode, opens reset spring, draws Tight reset spring and rear supporting plate cancel installation.
The distance between cable quadrant and rear supporting plate are L0, length L0For fixed value, the distance between cable quadrant and threading disk are L1, threading the distance between disk and rear supporting plate are L2, wherein L0=L1+L2
When original state, that is, the utility model is completed, umbrella folding bar group is in expansion state, between stock and quarter butt Distance of the hinge point apart from whirl spraying drill rod axis it is maximum, L at this time1In minimum value, L2In maximum value.When threading disk to Rear supporting plate is mobile, and the axis of the hinge point between stock and quarter butt towards whirl spraying drilling rod is mobile, until the hinge point is drawn close Whirl spraying drilling rod, i.e., when umbrella folding bar group purse up is around whirl spraying drilling rod, L1In maximum value, L2In minimum value.
It when the utility model being placed into predetermined depth position according to construction drawing design, drills, wherein to one As soil layer operating condition, be water to be sprayed directly into stratum with the front of whirl spraying spray head and lateral nozzle or cement slurry jet stream is cut Drilling is advanced with whirl spraying drilling rod major diameter section to the variable diameter step-shaped top of path section push-and-pull drum, while umbrella is rolled over while drilling Folded bar group is shunk due to the extruding by hole wall, so that the synchronous entire umbrella that follows up expands body device, when drilling reaches design reaming When section depth location, then with whirl spraying jet stream reaming, while expanding and opening umbrella folding bar group.Specifically, work progress is as follows:
When drilling: the whirl spraying spray head of whirl spraying drilling rod front end sprays low pressure water or cement from front nozzle and side to nozzle simultaneously Slurry, to cut the soil layer of hole wall, the aperture for shaping it only for guiding cap, cable quadrant, threading disk, rear supporting plate and is in gathering The umbrella folding bar group of state passes through, and draws the synchronous follow-up of steel strand wires by cable quadrant.Folding rod group is by drilling hole at this time The extruding of wall reduces gathering movement to generate, while threading disk being pushed to generate the movement to rear supporting plate.
When reaming: when drilling reaches the initial position of construction drawing design reaming section, whirl spraying drilling rod sprays while drilling High pressure~high-pressure water mud is penetrated, to cut the soil layer of hole wall, the aperture formed it into and umbrella folding bar group are in expansion state When maximum gauge match, until design reaming section terminal location, so that the expansion for umbrella folding bar group provides enough Space.After the completion of reaming section reaming, continues whirl spraying forward and creep into a small distance, expand umbrella folding bar group completely into design Hole fragment position.
Multiple is opened umbrella folding bar group: when reaming section has the expansive space of enough umbrella folding bar groups, threading Disk is moved forward with cable quadrant under the reseting elasticity effect of reset spring close to (i.e. L2Become larger, L1Become smaller) or in artificial outer drawing Steel strand wires effect drop-down drum is moved backward close to threading disk, squeezes umbrella folding bar group by from cable quadrant and threading disk Pressure, to the direction deformation far from whirl spraying drill rod axis, to realize multiple expansion of umbrella folding bar group.
After the shape folding rod group that opens umbrella again, compressed water slurry carries out the hole flushing of reaming section in the injection of whirl spraying drilling rod, deslagging is made Industry.After the completion of cleaning, the injection of whirl spraying drilling rod (or being perfused by grout pipe) ultralow compressed water slurry further increases umbrella enlarged footing Inside and around (around include cable quadrant before and threading disk back and umbrella folding bar group outside) slurry water Cement content ratio is then log out whirl spraying drilling rod, and in view of some cases pull down to increase the total bearing capacity of umbrella enlarged footing Drum has a possibility that retrogressing, should gently outer drawing steel stranded wire so that the load conversion device of its front end is close to cable quadrant.
The folding rod, preceding hinge bar, rear hinge bar material can be using reinforcing bar, carbon fiber, glass fibre etc., in mesh Last stage, from the perspective of economical and practical, preferably reinforcing bar or thick walled steel tube.
The guiding cap is movably set in whirl spraying drilling rod path section, positioned at the front side of cable quadrant, uses spiral shell with cable quadrant Line connection or welding or buckle-type connection, guiding cap can be taper, be also possible to the silo shape of cylinder after inner cone, can be using casting The production such as iron, cast steel, steel plate.
The passive type of the utility model follow-up synchronous with whirl spraying anchor cable without structure type umbrella enlarged footing, in the cable quadrant and If being provided with arterial highway wirerope 9 between threading disk, several layers positioning ring accordingly is provided on the inner or outer side wall of stock 10, one end of the per pass wirerope is connect after sequentially passing through this layer of positioning ring on each stock with the other end, and with card of restricting (every card of bar one or double card) is as connection, fixation.
The setting of wirerope and rope card can make to realize that circumferential drawknot, wirerope surround umbrella folding between stock and stock Bar group plays the role of ring-shaped stirrup, forms closed steel reinforcement cage, constitutes about to the bending deformation for expanding stock when body structure is pressurized Beam provides lateral confinement for cement slurry induration, to improve structure total bearing capacity.
The positioning ring is fixedly mounted on the inner or outer side wall of stock, it is preferred to use welding manner, positioning ring can Using the nut blank material of no internal screw thread.
When the length of the quarter butt of design is also longer, accordingly on the inner or outer side wall of every quarter butt be arranged positioning ring and Flexible wire ropes and rope card, i.e., be also provided with circumferential drawknot between quarter butt and quarter butt.
Preferably, when distance maximum when the hinge point between stock and quarter butt apart from whirl spraying drill rod axis, wirerope In exceptionally straight state.
Hinge bar 11 before being provided between the stock and cable quadrant, the front end of the preceding hinge bar and cable quadrant Connection can also be inserted into blind hole and cable quadrant using welding using the drilling blind vias in cable quadrant, preceding hinge bar front end The mode of being threadedly coupled connects, and guarantees construction quality angle from standardization measures, it is preferred to use thread connecting mode;It is preceding hinged The rear end of bar and the front end of stock are hinged.
The quarter butt and threading disk between be provided with after hinge bar 12, it is described after hinge bar front end and quarter butt after End is hinged, and the rear end of rear hinge bar is connect with threading disk, and welding can be selected in connection type, or uses preceding hinge bar and bracing wire Used plug-in type thread connecting mode between disk, at the same can also be used by rear hinge bar back end activity through threading disk and The back of rear end end fixing device for installing I 13 draws connection type, the counter-pressure transmitted because expanding body structure by load conversion device When the connecting portion will bear biggish tensile stress, and adjustment hinge openings direction is allowed to and radially consistent need when assembling Want, from standardization measures guarantee construction quality angle, it is preferred to use the latter, i.e., after hinge bar activity pass through threading disk after with threading Disk back draws connection, can use high-strength nut in the fixation device I of rear hinged rod rear end installation, the rear end screw thread with rear hinge bar Connection can also be welded on the rear end of rear hinge bar using materials such as reinforcing bar, steel loops.
Threaded on rear hinge bar disk and it is hinged between, be also arranged with elastic device, consolidated for guaranteeing in rear hinge bar While determining sliding before and after device I is tensed, do not generated, this can be hingedly freely rotated;Elastic device can be added flat using spring Pad or spring washer add plain cushion etc..
It is provided with opening reset spring between threading disk and the rear supporting plate, or is arranged between cable quadrant and threading disk There is tension reset spring, when umbrella, which expands body device, enters the reaming section for having enough extending spaces, moves back to threading disk Initial position, the telescopic direction opened reset spring, tense reset spring are parallel to the axis of whirl spraying drilling rod.
When (spring is pressure spring at this time), cable quadrant and butt when threading setting opening reset spring between disk and rear supporting plate An opening reset spring or multiple opening reset springs can be used between plate.When using an opening reset spring, it can incite somebody to action It is set on whirl spraying drilling rod, or is set in the periphery of whirl spraying drilling rod and all steel strand wires;Multiple openings can also be used to reset Spring is arranged the covered methods such as an opening reset spring respectively on steel strand wires.
When setting tenses reset spring between cable quadrant and threading disk (spring is tension spring at this time), it can be resetted tensing Spring is set on whirl spraying drilling rod, or is arranged a tension reset spring respectively on steel strand wires, can also drilling rod together with The covered methods such as a tension reset spring are arranged in the outside integral coating of all steel strand wires;But it is because tensing reset spring at this time Tension spring, steel wire spacing is closeer, can consume a large amount of whirl spraying ablation energy, thus weaken cutting of the whirl spraying jet stream to the wall of a borehole, It is advantageous to minor diameter tension spring is arranged on steel strand wires.
When setting tenses reset spring between cable quadrant and threading disk, tense the both ends of reset spring respectively with bracing wire Disk is connected with threading disk, and in cable quadrant and setting hook fixed ring 22 in position corresponding on threading disk, tenses reset spring certainly The hook at body both ends is hung in corresponding hook fixed ring;Annular element such as nut can be used by linking up with fixed ring, Hook shaped component can be used, is welded to connect or is threadedly coupled with cable quadrant and threading disk respectively.
Fixed device II 16 is additionally provided on rear side of rear supporting plate, it is preferable that fixed device II and opening reset spring pair It should be arranged, rear supporting plate and fixed device II provide rear seat supports as to open reset spring performance opening reseting elasticity simultaneously Component;One piece of whole support board structure or muti-piece fission support board structure can be used in rear supporting plate, can be using round or polygon ring The shapes such as shape bar shaped;According to the installation position for opening reset spring, fixed device II, which is accordingly mounted on steel strand wires, to be opened again The rear of position spring;When fixed device II is with opening reset spring and installing for non-corresponding, the increase of drilling resistance and right is brought The increase of rear supporting plate rigidity requirement is uneconomic.
When opening reset spring is sheathed on respectively on every steel strand wires, rear supporting plate is that muti-piece fission support board structure is worn respectively It is located at the rear side for opening reset spring on every steel strand wires, or is threaded through whirl spraying drilling rod and institute for one piece of whole support board structure activity There is the rear side that reset spring is opened on steel strand wires;Fixed device II is then respectively and fixedly installed on every steel strand wires after rear supporting plate Side;
When opening reset spring integral coating is set in the outside of whirl spraying drilling rod and all steel strand wires, rear supporting plate is one piece Whole support board structure activity is threaded through the rear side that reset spring is opened on whirl spraying drilling rod and all steel strand wires;Fixed device II then divides It is not fixedly mounted on the rear side of rear supporting plate on every steel strand wires;
In the case where expanding opening umbrella folding bar group using artificial outer drawing steel stranded wire mode, opens reset spring, draws Tight reset spring and rear supporting plate cancel installation.
While will open reset spring and be set on steel strand wires, need simultaneously also to pacify rear supporting plate and fixed device II The rear side of reset spring is opened on steel strand wires with seat supports after providing, fixed device II can use matched with steel strand wires Extruded sleeve or special anchorage etc.;
In the case where not configuring opening reset spring, rear supporting plate and fixed device II also cancel installation.
It is additionally provided with limiting device 15 between cable quadrant and threading disk, between adjusting between cable quadrant and threading disk Away from;And the geometry of the umbrella folding bar group after being opened before cement slurry sets to expansion by limiting device is determined Type;
When limiting device is an integrated support structure, front end is located on rear side of cable quadrant, before its rear end is located at threading disk Side, limiting device can be set on steel strand wires, can also individually be fixedly mounted (welding or be threadedly coupled etc.) in cable quadrant and It threads on disk;The adjusting of distance between cable quadrant and threading disk is realized by the length of regulation limiting device;
When limiting device is broken up into two independent individuals i.e. front limit device provided 24 and rear limiting device 17, front limit Device and rear limiting device must be fixedly mounted in couples on same root steel strand wires, and installation site is respectively on rear side of cable quadrant On front side of threading disk;The adjusting of distance between cable quadrant and threading disk is passed through before adjusting front limit device provided and rear limiting device Position is realized afterwards.
When limiting device is an integrated support structure, can be used living on each steel strand wires between cable quadrant and threading disk It is dynamic to be arranged the tubing such as steel pipe as limiting device, it can ensure that external loads are all passed to load conversion device by steel strand wires, There is some strength again, the geometry of the umbrella folding bar group after opening before cement slurry sets to expansion can play sizing Effect, can also bear the cutting of high-pressure rotary-spray.
When limiting device is allocated as front limit device provided and rear limiting device is disposed on steel strand wires, rear limiting device can With use semi-rigid material extruded sleeve matched with steel strand wires, installed with special extrusion machinery, when after limiting device adopt When with common steel extruded sleeve, it should be also set with semi-rigid material isolation ring between threading disk, to ensure that steel strand wires can incite somebody to action External loads all pass to the load conversion device of front end end.
Bearing is arranged in the path section of the whirl spraying drilling rod, the bearing is located at the major diameter of cable quadrant and whirl spraying drilling rod Between section.The setting of bearing is so that whirl spraying drilling rod reduces the coefficient of friction of variable diameter step contact surface, thus umbrella in rotation Expanding body device will not rotate or distort therewith;The bearing preferably uses pressure bearing.
In the utility model in use, being formed for preexisting hole, pre- reaming operating condition, such as with mechanical reamer Hard shape argillic horizon, the foundation pit in lithosphere or slope retaining anchor cable, the high inclination-angle pattern foundation pit supporting structure anchor cable in general soil layer, erect Histogram to anti-float anchor rod anchor cable etc., can directly with whirl spraying drilling rod by the utility model jacking to the reaming position, still use In such a way that reset spring automatically resets, or disk or rear supporting plate will be threaded using external force factors such as the closing in positions of reaming section and will be fixed It is outer in a manner of manually pulling out steel strand wires in drilling in the case where firmly, so that umbrella folding bar group is opened expansion again, then repeatedly Whirl spraying cleaning deslagging simultaneously answers water-spray type slurry or pre-embedment grouting pipe grouting.Umbrella folding is opened again with artificial span wire system when using When bar group, tenses reset spring, opening reset spring, rear supporting plate, fixed device II and cancel installation.
Embodiment 2
The present embodiment is on the basis of embodiment 1, to make to two kinds of embodiments of control umbrella folding bar dimension It further illustrates out.
To make umbrella folding bar group when expanding for multiple, the hinge point between stock and quarter butt can be bored only to far from whirl spraying The direction of rod axis is mobile, when assembling umbrella and expanding body device, can by adjusting limiting device length or front limit device provided, The front-rear position of limiting device adjusts cable quadrant and threading the distance between disk afterwards, make its be less than stock and quarter butt length it With realize, i.e. guarantee umbrella folding bar group stock quarter butt when collapsing to minimum diameter state cannot be straightened into one directly completely Line, umbrella folding bar group still have to keep slight expansion state;It is of course also possible to select using the hinged (living of angled limitation Dynamic range is hinged within 180 degree), or when processing and fabricating is hinged, setting corner is limited, and expands body dress in assembling umbrella Pay attention to keeping installation direction correct when setting.
Embodiment 3
The lesser situation of formation resistance is met, the guiding cap in front of first godet can cancel installation.
Embodiment 4
The present embodiment is on the basis of embodiment 1, to open reset spring or tension reset spring as umbrella to using Folding rod group is opened the case where mode again and is further illustrated.
As in Figure 2-4, it is provided with opening reset spring between threading disk and the rear supporting plate, in cable quadrant and threading Tension reset spring is provided between disk, the telescopic direction of the reset spring is parallel to the axis of whirl spraying drilling rod.
Opening reset spring and tensing the covered method of reset spring includes but is not limited to following numerous embodiments, application When can according to engineering practice choose one or more be applied in combination.
Open the first embodiment of reset spring: one opening of setting resets bullet between threading disk and rear supporting plate Spring, by all steel strand wires, whirl spraying drilling rod integral coating in a reset spring.
Open second of embodiment of reset spring: one opening of setting resets bullet between threading disk and rear supporting plate Spring is set on whirl spraying drilling rod.
It opens the third embodiment of reset spring: multiple openings being set between threading disk and rear supporting plate and reset bullet Spring is respectively sleeved on each steel strand wires, as shown in Figure 2.
In the embodiment of above-mentioned opening reset spring, the type for opening reset spring is pressure spring, the behaviour of the utility model It is as follows to make process: the umbrella that whirl spraying drilling rod carries expands body device drilling or while is placed into drilling, umbrella folding bar group by It is squeezed to borehole wall and generates radial gathering, longitudinal stretching, threading disk is pushed backward by the rear end of umbrella folding bar group, makes to open Reset spring is in compressive state;When umbrella folding bar group reaches design reaming section and has extending space, opens and reset bullet Spring, which plays reseting elasticity, will thread disk pushed home forward, and umbrella folding bar group is by the extruding from cable quadrant and threading disk Power realizes longitudinal compression, radial dilatation.
It tenses the first embodiment of reset spring: multiple tensions being set between cable quadrant and threading disk and reset bullet Spring is respectively sleeved on each steel strand wires, as shown in Figure 3.
Tense second of embodiment of reset spring: one tension of setting resets bullet between cable quadrant and threading disk Spring is set on whirl spraying drilling rod.
Tense the third embodiment of reset spring: one tension of setting resets bullet between cable quadrant and threading disk All steel strand wires and whirl spraying drilling rod are coated in a reset spring by spring.
In the embodiment of above-mentioned tension reset spring, the type for tensing reset spring is tension spring, the behaviour of the utility model It is as follows to make process: the umbrella that whirl spraying drilling rod carries expands body device drilling or while is placed into drilling, umbrella folding bar group by It is squeezed to borehole wall and generates radial gathering, longitudinal stretching, threading disk is pushed backward by the rear end of umbrella folding bar group, makes to tense Reset spring is in tensional state;When umbrella folding bar group reaches design reaming section and has extending space, tenses and reset bullet Spring plays reseting elasticity and threading disk is retracted forward original position, and umbrella folding bar group is by the extruding from cable quadrant and threading disk Power realizes longitudinal compression, radial dilatation.
In the various embodiments of above-mentioned tension reset spring, tense the both ends of reset spring respectively with cable quadrant and threading Disk connection, and in the corresponding position setting hook fixed ring of cable quadrant and threading disk, tense the hook at reset spring itself both ends It is hung in corresponding hook fixed ring.
Link up with fixed ring can use annular element such as nut, can also use hook shaped component, respectively with cable quadrant and Disk 4 is threaded to be welded to connect or be threadedly coupled.
The embodiment of reset spring is various, both can only choose a kind of use, can also choose two or more It is combined use (as shown in Figure 4).
Embodiment 5
The present embodiment is on the basis of embodiment 1, to open mode again as umbrella folding bar group to using artificial drag-line Situation further illustrates.
The utility model only need to select less component to assemble the operating condition, as shown in Figure 1, the construction of the present embodiment Operating process is as follows: while the umbrella that whirl spraying drilling rod carries expands body device drilling or is placed into prebored hole, umbrella folding bar Group is squeezed by borehole wall generates radial gathering, longitudinal stretching, and threading disk is pushed backward by the rear end of umbrella folding bar group;When When umbrella folding bar group reaches design reaming section and has extending space, whirl spraying drilling rod is exited, the closing in position of reaming section is utilized Rear supporting plate or threading disk are tangled, manually to pull out steel strand wires outside drilling, cable quadrant is drawn and retreats, until limit dress Styling can be played by setting, to make umbrella folding bar group by the extruding force from cable quadrant and threading disk, be realized longitudinal Compression, radial dilatation.
But because in such a way that manpower drawing steel strand wires open umbrella shape folding rod group again, there is entire umbrellas to expand body device Pulled out the risk of reaming section simultaneously, thus it is this be more suitble in such a way that manpower pulls the opening again of steel strand wires backward lithosphere, The pre- reaming operating condition of hard shape argillic horizon or inclination angle biggish soil layer anchor hole situation (for example foundation pit anchor at 45 degree of inclination angles Rope) and the anti-float anchor rod anchor cable of vertical direction etc., other situations are then used with caution;And it is noted that drawing row outside review anchor cable when drawing outside Whether rated travel, the every steel strand wires whether journey is more than cable quadrant tense, and must also take and face outside drilling orifice after multiple When fixation, anchor cable outer end must not hold and retracted, otherwise steel bar stress cage will undergauge, can be removed after slurries final set It is fixed temporarily.
Embodiment 6
The present embodiment is on the basis of embodiment 1, to make reality to the grouting mode and pre-embedment grouting pipe of umbrella enlarged footing Apply explanation.
As shown in Fig. 2, the active umbrella enlarged footing of the utility model follow-up synchronous with whirl spraying anchor cable, drilled, The umbrella that follows up expands after body device, reaming and hole flushing deslagging operation, can directly adopt whirl spraying drilling rod and carry out ultralow pressure rotary jet grouting Operation can also be set using static pressure grouting mode according to the difference of different engineerings with final molding cement slurry induration enlarged footing Meter requires to carry out personalized grouting.Static pressure grouting mode can achieve extra high load bearing capacity, rapid hardening, anti-shrink, waterproof anti-corrosion etc. Various engineering target.
When using static pressure grouting mode, needing while drilling, the synchronous pre-buried dedicated grout pipe of follow-up realizes slip casting, Grout pipe is plugged in umbrella and expands on body device, i.e., is drawn with fixing the back of device III onto cable quadrant or threading disk, revolved in cable quadrant While the variable diameter step-shaped top of spray drilling rod is advanced into drilling, grout pipe also enters umbrella by cable quadrant or threading disk traction and expands body Pre-buried in device, the grout outlet of grout pipe is arranged in cable quadrant and threads any position between disk.
Embodiment 7
In engineer operation, the passive type of follow-up synchronous with whirl spraying anchor cable with the utility model is without structure type umbrella enlarged footing Matched general construction technology process is as follows:
1, prepare, check work:
In advance in plant produced standard parts and components, after transporting building-site, voluntarily assembled according to drawing practical It is novel;
Limiting device is adjusted, and measures and record the rated travel of cable quadrant;After ready, before drilling, umbrella folding Bar group has been expanded to the maximum rating of setting, umbrella is presented, as shown in Figs 1-4;
Check whether there is the work certificate of license producer;
The sampling observation report of load conversion device installation is checked whether there is, whether sampling observation is qualified.
2, whirl spraying drilling, synchronous follow-up umbrella expand body device, steel strand wires:
While whirl spraying drilling rod starts to creep into stratum, the variable diameter step of whirl spraying drilling rod passes through bearing pushing tow cable quadrant It advances forward, cable quadrant carries steel strand wires and synchronizes forward, the low pressure water or cement slurry of whirl spraying drilling rod injection at this time;
While cable quadrant advances, umbrella folding bar group is longitudinally stretched, radial direction collapses, and is taken to be synchronized by cable quadrant Band enters in drilling, is also drawn and is carried along by threading disk or cable quadrant back at the same time if you need to pre-embedment grouting pipe;
Cable quadrant advances simultaneously, and threading disk advances under the pulling of folding rod or tension reset spring or resets bullet opening Advance under the promotion of spring, rear supporting plate, which is fixed device II and pushes, advances.
3, reaming:
After being bored into design reaming position, whirl spraying drilling rod sprays high pressure~high-pressure water mud and carries out reaming.
4, open umbrella shape folding rod group again:
Reaming is completed, and umbrella folding bar group is made to have the space of expansion, is being opened reset spring or is being tensed reset spring Reseting elasticity effect or it is artificial outer draw anchor cable under the action of, threading disk is mobile to cable quadrant or cable quadrant is mobile to threading disk, Umbrella folding bar group is squeezed, is allowed to be slightly compressed longitudinally, radial dilatation, umbrella is reverted to again, to play in enlarged footing Steel bar stress skeleton function.
5, hole flushing deslagging:
Compressed water slurry carries out hole flushing and returns slurry deslagging in the injection of whirl spraying drilling rod.
6, it is in the milk:
After the completion of hole flushing, ultralow compressed water slurry is sprayed with whirl spraying drilling rod or is in the milk by pre-embedment grouting pipe, in whirl spraying While slip casting or grouting, it is contemplated that some cases drop-down drum has the possibility of retrogressing, should be manually according to the specified of cable quadrant Stroke gently by drawing steel stranded wire outside root, makes the load conversion device of its front end retreat and be close to cable quadrant, thus external loads energy Umbrella enlarged footing is immediately passed to by extruded sleeve.
7, brill is moved back:
After the completion of grouting, exit outside whirl spraying drilling rod to hole, construction terminates.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model Determine protection scope of the present invention, within the spirit and principle of the utility model, any modification for being made, changes equivalent replacement Into etc., it should be included within the scope of protection of this utility model.

Claims (9)

1. the passive type of follow-up synchronous with whirl spraying anchor cable expands body dress without structure type umbrella enlarged footing, including whirl spraying drilling rod (1), umbrella It sets and several steel strand wires (2), it is characterised in that: it includes the umbrella folding being made of several folding rods that the umbrella, which expands body device, Folded bar group, and the guiding cap (21), cable quadrant (3), the threading disk that are successively movably set on whirl spraying drilling rod (1) from front to back (4), the whirl spraying drilling rod (1) is multi-diameter shaft, and cable quadrant (3) is set in the path section of whirl spraying drilling rod (1), threading disk (4) set It is located in the major diameter section of whirl spraying drilling rod (1);Bearing (19) are provided between cable quadrant (3) and whirl spraying drilling rod (1) variable diameter step, The bearing (19) is set in whirl spraying drilling rod (1) path section;
Activity is connect across threading disk (4) with cable quadrant (3) from back to front for the front end of each steel strand wires (2);
The front end of each folding rod is connect with cable quadrant (3), and rear end is connect with threading disk (4);
The steel strand wires (2) and folding rod are uniformly arranged around whirl spraying drilling rod (1).
2. the passive type of follow-up synchronous with whirl spraying anchor cable according to claim 1 is without structure type umbrella enlarged footing, feature Be: each folding rod includes stock (7) and the quarter butt (8) being articulated and connected therewith, and the front end of the stock (7) is equal Hingedly by preceding hinge bar (11) and cable quadrant (3), the rear end of the quarter butt (8) passes through rear hinge bar (12) and threading disk (4) hingedly, cable quadrant (3) are adjusted and thread the spacing between disk (4), the hinge point between stock (7) and quarter butt (8) can be made Axis far from or close to whirl spraying drilling rod (1).
3. the passive type of follow-up synchronous with whirl spraying anchor cable according to claim 2 is without structure type umbrella enlarged footing, feature It is: is correspondingly arranged on multilayer positioning ring (10) on the every stock (7) or quarter butt (8), every layer of positioning ring (10) is logical Wirerope (9) series connection is crossed, the stock (7) or quarter butt (8) by positioning ring (10), wirerope (9) and connection and are fixed The rope card of wirerope (9) realizes circumferential drawknot.
4. the passive type of follow-up synchronous with whirl spraying anchor cable according to claim 1 is without structure type umbrella enlarged footing, feature Be: successively activity runs through threading disk (4), cable quadrant (3) to the steel strand wires (2) from back to front, and before steel strand wires (2) End installation load conversion device (14) is held, so that steel strand wires (2) and cable quadrant (3) is formed back by load conversion device (14) and draws Connection.
5. the passive type of follow-up synchronous with whirl spraying anchor cable according to claim 1 is without structure type umbrella enlarged footing, feature Be: the umbrella expands body device and is equipped with grout pipe (6), and the grout pipe (6) is plugged in umbrella and expands on body device, grout pipe (6) grout outlet setting is between cable quadrant (3) and threading disk (4).
6. the passive type of follow-up synchronous with whirl spraying anchor cable according to claim 1 is without structure type umbrella enlarged footing, feature It is: is provided between the cable quadrant (3) and threading disk (4) and tenses reset spring (20), by tensing reset spring (20) tension reseting elasticity can make to thread disk (4) to cable quadrant (3) movement;When whirl spraying drilling rod (1) major diameter section is to path section When variable diameter step pushing tow umbrella expansion body device is entered in drilling, umbrella folding bar group is generated contracting by the extruding of borehole wall Small gathering movement, while pushing threading disk (4) with steel strand wires (2) is that sliding rail generates movement to steel strand wires (2) extreme direction afterwards, is drawn Tight reset spring (20) is stretched;When umbrella, which expands body device, to be entered reaming section and there are enough extending spaces, resetted tensing Under the tension reseting elasticity effect of spring (20), threading disk (4) is mobile to cable quadrant (3), and umbrella folding bar group is by from drawing Drum (3) and the extruding force for threading disk (4) generate the deformation far from whirl spraying drilling rod (1) axis, to realize umbrella folding bar group Expansion opening action;
In the case where expanding opening umbrella folding bar group using artificial outer drawing steel stranded wire (2) mode, tense reset spring (20) Cancel installation.
7. the passive type of follow-up synchronous with whirl spraying anchor cable according to claim 1 or 6 is without structure type umbrella enlarged footing, special Sign is: be additionally provided with rear supporting plate (5) below in the threading disk (4), while the threading disk (4) and rear supporting plate (5) it Between be provided with and open reset spring (23), by opening the opening reseting elasticity of reset spring (23), can make to thread disk (4) to drawing Drum (3) is mobile;Enter in drilling when whirl spraying drilling rod (1) major diameter section expands body device to the variable diameter step pushing tow umbrella of path section When, umbrella folding bar group is generated by the extruding of borehole wall reduces gathering movement, while threading disk (4) being pushed to twist with steel Line (2) is that sliding rail generates movement to steel strand wires (2) extreme direction afterwards, opens reset spring (23) and is compressed;When umbrella expands body dress When setting into reaming section and having enough extending spaces, in the case where opening the opening reseting elasticity effect of reset spring (23), threading Disk (4) is mobile to cable quadrant (3), and umbrella folding bar group is generated remote by the extruding force from cable quadrant (3) and threading disk (4) Deformation from whirl spraying drilling rod (1) axis, to realize the expansion opening action of umbrella folding bar group;
In the case where expanding opening umbrella folding bar group using artificial outer drawing steel stranded wire (2) mode, open reset spring (23) Cancel with rear supporting plate (5) and installing.
8. the passive type of follow-up synchronous with whirl spraying anchor cable according to claim 7 is without structure type umbrella enlarged footing, feature It is: is additionally provided with fixed device II (16) on rear side of rear supporting plate (5), fixed device II (16) is and opens reset spring pair It should be arranged, the two is simultaneously as the component to open seat supports after reset spring (23) performance opening reseting elasticity provides.
9. the passive type of follow-up synchronous with whirl spraying anchor cable according to claim 1 or 2 is without structure type umbrella enlarged footing, special Sign is, limiting device (15) is additionally provided between cable quadrant (3) and threading disk (4), for adjusting cable quadrant (3) and threading Spacing between disk (4);And the umbrella folding bar group after being opened before cement slurry sets to expansion by limiting device (15) Geometry carry out shaping.
CN201820999761.6U 2018-06-27 2018-06-27 The passive type of follow-up synchronous with whirl spraying anchor cable is without structure type umbrella enlarged footing Active CN208668408U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110439005A (en) * 2019-06-24 2019-11-12 中国地质大学(武汉) One kind being used for interbedding of soft and hard rocks rock mass stream line structure and its construction method
CN111395313A (en) * 2020-03-09 2020-07-10 张�林 Concrete embedded pile for reinforcing soft foundation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110439005A (en) * 2019-06-24 2019-11-12 中国地质大学(武汉) One kind being used for interbedding of soft and hard rocks rock mass stream line structure and its construction method
CN110439005B (en) * 2019-06-24 2020-05-01 中国地质大学(武汉) Anchor cable structure used in soft and hard interbedded rock mass and construction method thereof
CN111395313A (en) * 2020-03-09 2020-07-10 张�林 Concrete embedded pile for reinforcing soft foundation
CN111395313B (en) * 2020-03-09 2021-08-10 福建金鼎建筑发展有限公司 Concrete embedded pile for reinforcing soft foundation

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