CN207017255U - Mechanical pile system in hole - Google Patents

Abstract

Subway piling technology field is the utility model is related to, in particular to mechanical pile system in a kind of hole, including pile foundation aperture bracing means（10）, pile foundation boring device（20）, mechanical pile device in hole（30）, reinforcing bar cage assembly in mechanical displacement device and mounting hole（60）, steel pipe column location and installation and pour the erecting device of conduit（70）With underwater gliders device（80）, the system eliminates the process for installing steel pile casting during pile, without carrying out clearing up stake top mud and abolishing pile crown concrete installation positioner, eliminate the flow chart of operating worker small space in steel pipe column, the generation of security incident is avoided, while shortens the duration, has saved cost.

Description

Mechanical pile system in hole

Technical field

Subway piling technology field is the utility model is related to, in particular to mechanical pile system in a kind of hole.

Background technology

Steel pile casting is generally installed in pile during subway tunnel piling of the prior art, then needs to carry out cleaning stake top Mud and pile crown concrete installation positioner is abolished, it is hidden to bring safety due to narrow space in steel pipe column therefore to operating worker Suffer from, the duration is longer, manufacturing cost increase.

In addition, need to carry out pile foundation construction first during metro tunnel excavation, typically using following methods：1st, it is artificial broken Hole carries out excavation with guide pit, and excavation with guide pit depth is 3.0m；2nd, machinery drilling, pore-forming；3rd, placing of reinforcement cage, sound detecting pipe；4th, irrigate Concrete；5th, grouting behind shaft or drift lining is carried out.Because what is performed in hole lacks experience, completion 25, collapse hole 6, collapse hole rate during experiment 24%；There is collapse hole phenomenon in what stake was different degrees of in follow-up carry out experiment completion again first 3, and collapse hole rate is 100%, And then follow-up to have carried out substantial amounts of experiment again, final test is drawn：Collapse hole position is concentrated under just branch inverted arch at 4-6m, right Boulder bed is according to distribution of strata more.Therefore, pile foundation aperture reinforces most important.

Utility model content

In order to solve above-mentioned technological deficiency existing for prior art, it is an object of the invention to provide machinery in a kind of hole to beat Stake system, solves the problems, such as that installation difficulty, duration are longer by changing mounting means.

Moved according to mechanical pile system in hole of the present utility model, including pile foundation boring device, mechanical pile device, machinery Position device and mounting hole in steel reinforcement cage, steel pipe column location and installation and pour conduit erecting device and underwater gliders dress Put, the location and installation of steel pipe column and pour the erecting device of conduit and be located at the top of steel reinforcement cage；Underwater gliders device with The location and installation of steel pipe column and pour conduit erecting device connection；The system also includes pile foundation aperture bracing means.This is System eliminates the process for installing steel pile casting during pile, without carrying out clearing up stake top mud and abolishing the installation positioning of pile crown concrete Device, the flow chart of operating worker small space in steel pipe column is eliminated, avoid the generation of security incident, shorten simultaneously Duration, cost is saved.

Preferably, the mechanical pile device is from mechanical pile device in hole.

In any of the above-described scheme preferably, pile foundation aperture bracing means is included on pilot tunnel inverted arch and side wall root Set Grouting Pipe, excavation with guide pit device, mud balance device, increase mud off device and pile foundation hole-forming device in measured hole.

In any of the above-described scheme preferably, pile foundation aperture bracing means also includes aperture reinforcing layout structure.

In any of the above-described scheme preferably, the aperture reinforces layout structure and includes being located at the pile foundation below stratum, The aperture surrounding of pile foundation sets injected hole vertically, and Grouting Pipe is inserted in the injected hole, has multiple open on the tube wall of Grouting Pipe Hole, single liquid cement mortar is inoculated with Grouting Pipe.

In any of the above-described scheme preferably, supporting pad is equipped with the top of the stratum, the supporting pad is by more spiral shells The network structure that line steel is spliced.

In any of the above-described scheme preferably, mechanical pile device is bored from track-mounted drill and assembled tubes in the hole Drilled.

In any of the above-described scheme preferably, the assembled tubes, which bore, includes cylinder, and the centre of cylinder is provided with pipe, The pipe is fixedly connected by support with cylinder, and support is made up of set square, and the edge of the set square is provided with multiple drill bits； More steel wire ropes are provided with cylinder.

In any of the above-described scheme preferably, the steel wire rope is two layers, and two layers of steel wire rope is uniformly interspersed.

In any of the above-described scheme preferably, the front end of the pipe is provided with the connecting plate with drill bit.

Brief description of the drawings

Fig. 1 is the structural representation according to a preferred embodiment of mechanical pile system in hole of the present utility model.

Fig. 2 is the knot reinforced according to a preferred embodiment pile foundation aperture of mechanical pile system in hole of the present utility model Structure schematic diagram.

Fig. 3 is to show according to the structure that drilling pipe is combined in a preferred embodiment of mechanical pile system in hole of the present utility model It is intended to.

Fig. 4 is according to another reality that drilling pipe is combined in a preferred embodiment of mechanical pile system in hole of the present utility model Apply the structural representation of example.

Embodiment

It is that the following description is substantially merely exemplary and be not intended to limit the disclosure, application or purposes.Below The embodiment of mechanical pile system in the utility model hole is further described with reference to Figure of description.

As shown in figure 1, the structural representation according to a preferred embodiment of mechanical pile system in hole of the present utility model.

According to mechanical pile system in hole of the present utility model, including pile foundation boring device 20, mechanical pile device, machinery Steel reinforcement cage 60 in shift unit and mounting hole, steel pipe column location and installation and pour the erecting device 70 and underwater concrete of conduit Device for casting 80, the location and installation of steel pipe column and pours the erecting device 70 of conduit and is located at the top of steel reinforcement cage 60；Underwater coagulation The location and installation of native device for casting 80 and steel pipe column and pour conduit erecting device 70 connection；The system also includes pile foundation hole Mouth bracing means 10.The system eliminates the process for installing steel pile casting during pile, without carrying out clearing up stake top mud and abolishing stake Head concrete installation positioner, eliminates the flow chart of operating worker small space in steel pipe column, avoids security incident Generation, while shorten the duration, saved cost.

In the present embodiment, the mechanical pile device is from mechanical pile device 30 in hole.

In the present embodiment, pile foundation aperture bracing means 10 includes setting Grouting Pipe on pilot tunnel inverted arch and side wall root 11st, excavation with guide pit device 12, mud balance device 13, increase mud off device 14 and pile foundation hole-forming device 15 in measured hole.

The pile foundation construction of mechanical pile system is as follows in hole of the present utility model：

1st, skirt piles, middle stake drilling are carried out downwards in upper pilot tunnel, should be by " boring one " drilling sequences every two to apply for skirt piles Work, and base tunnel is set.

2nd, the quality control of rig pore-forming：Because stratum sandy gravel is more, the retaining wall performance of mud, Yi Mianzao are notably checked Into reaming or collapse hole, it is big to cut workload when in turn resulting in excavation；The degree control of pore-forming is controlled, in case pile body invades base Hole, control method is selected according to different pore-forming techniques；The centering of rig is controlled, in case pile position deviation transfinites and invades limit.

3rd, steel reinforcement cage shaping production quality is controlled：Control upset straight thread processing and quality of connection；Check reinforcement weldering Quality, the welding quality of especially first reinforcement are connect, in order to avoid have big deformation during reinforcing bar cage hoisting.

When steel reinforcement cage is installed the 4th, pay attention to checking the installation situation of supervising device.

5th, steel reinforcement cage location control：Check whether underwater steel reinforcement cage centering is qualified, check whether cage top absolute altitude is correct.

6th, whether preparation meets the requirements before checking perfusion, mainly includes conduit quality, catheter length collocation, conduit gas Close property inspection result, the control of beginning quantity, mud balance, sand factor, hole depth etc..

7th, station work by the management of filling process is carried out.

8th, supervise unit in charge of construction to carry out pile measurement by design requirement, carry out witness work.

9th, station work by the management of pile foundation grouting behind shaft or drift lining is carried out.

Mechanical pile system includes following key procedure in hole of the present utility model：

First, manually digging hole (base tunnel)

1st, the depth 3m of manually digging hole, using C20 reinforced concrete core-tube structures.The minimum diameter of skirt piles dado structure is 1100mm, thickness 100mm, the construction of dado structure merogenesis, often save height 1m, are divided into 3 sections.In the minimum of middle pile wall structure Footpath is 1900mm, thickness 150mm, the construction of dado structure merogenesis, often saves height 1m, is divided into 3 sections.Wherein first segment retaining wall is applied Work should be reinforced with pilot tunnel bottom plate opening and poured simultaneously, be allowed to connect integral, strengthen its steadiness.

2nd, the arrangement of reinforcement of dado structure：Circumferential reinforcement is the@200 of φ 8, and the lap of splice is not less than 31d；Vertical reinforcement spacing is φ 8@200mm, vertical reinforcement end should squeeze into 250~300mm below native face, the connection of vertical reinforcement overlapping splice, and the lap of splice is 31d.The reinforcing bar grades of Φ 14 are HRB400, and the reinforcing bar grades of φ 8 are HPB300.

3rd, the base tunnel of manually digging hole construction uses the sequence construction every a digging one.Excavate using manually successively excavating, often save Retaining wall all should continuously be constructed on the same day and finish, and the dismounting of dado template should be carried out after concrete perfusion 24h, in upper section retaining wall Lower section borehole construction can be carried out after reaching design strength 70%, at most excavates 1 section retaining wall, i.e. 1m daily.

4th, when running into mobility mud or drift sand, hole encircle for protection wall construction should reduce often save retaining wall height it is (desirable 0.3-0.5m), or using steel pile casting construct, when can not still be constructed using the above method, i.e., backfill stake holes to can control with sand rapidly System is collapsed untill hole, and speed reports relevant engineering department's processing；It is that digging is retaining wall to easily landslide section.As borehole is deepened, installation diving Pump drainage, displacement suitable control is to prevent collapse hole.Find that pipeline, foreign matter must stop constructing in digging process, the very first time Relevant departments of project management department, continue to construct after processing to be confirmed.

The drilled pile construction preparation of mechanical pile system should be met the following requirements in hole of the present utility model：

1st, levelling of the land：

It is required that layer construction people carries out smooth, removing earth's surface gurry to bore operation face in advance.The low-lying place in place is available viscous Property earth material, two-ash soil be backfilling and compacted and ensure that foundation bearing capacity meets construction needs.

2nd, surveying setting-out：

On the basis of plane control, vertical control network to whole engineering are checked, the stake position of layer construction people is checked Setting-out, it is desirable to which layer construction people is positioned to each position with timber or reinforcing bar, and deviations cannot be greater than 50mm.

3rd, the setting of slurrying pond, sedimentation basin and mud pit will meet safe and environment-friendly, civilized construction requirement.

4th, shield-tube embedment：

1. checking casing center, stake position center is made in casing top pull cross hairs.Tolerance≤50mm.In casing Footpath should be greater than bit diameter 20cm.Casing top is preferably higher by working water level or level of ground water 2m, and is higher by construction ground 0.5m.It is high Degree should still meet the requirement of mud face height in hole.When surface soft soil, casing is preferably embedded in harder closely knit soil At least 0.5m in layer.Clay, and compaction in layers should be backfilled in casing surrounding.The methods of hammering, pressurization, vibration can be used sinking shield Cylinder.

2. check casing perpendicularity, it is allowed to which deviation will meet code requirement.

3. casing top mark is high and the cylinder s buried depth meets construction needs, shield-tube embedment should be firm, water-tight.

5th, mud controls：

1. mud balance：Before concrete perfusion, the mud balance within bottom hole 500mm should be less than 1.25.

2. viscosity：It cannot be greater than 28s.

3. sand factor：Brand-new mud is not preferably greater than 8%.

4. mud raw material preferably selects high-quality clay, when having ready conditions, bentonite pulping can be preferentially used.In order to improve mud Viscosity and colloidity, can put into appropriate caustic soda or sodium carbonate in mud, and its volume is determined by experiment.

The drilled pile construction control of mechanical pile system is as follows in hole of the present utility model：

1st, rig installation and drilling

1. during rigging up, chassis should be leveled up, keep stable, displacement and depression must not be produced.Apply guy in rig top Rope is symmetrical to be tensed.

After 2. rig is in place, check drilling rod position.Drilling rod requirement is vertical, and its center should overlap with stake position, it is allowed to deviation Within 50mm.Site supervision should require that Quality Inspector checks rotating disk levelness with horizon rule, and chassis should consolidate.

3. mobile jib, drilling rod, the length of the bit and bit diameter are verified and recorded before spudding in, it is desirable to which drilling rod, drill bit are special Machine is special；Check plummet, whether inspection hole device is complete and meets the requirements；Perpendicularity after the airtight performance of inspection conduit and installation Deng.

4. during drill hole of drilling machine, water level in borehole is preferably higher than more than casing footing 0.5m or more than level of ground water above 1.0m.

5. speed is preferably uniform during drilling.It is unearthed, must not be deposited in around drilling in hole.In boring procedure it should be noted that stratum becomes Change, it is desirable to by different geological conditions, strict keyhole penetration rate, adjust mud property in time, it is original to fill in drilling strictly according to the facts Record.

6. one-step pore-creating is answered in drilling, must not pause halfway.Drilling reach projected depth after, reply hole position, aperture, hole depth and Hole shape etc. is checked, and fills in borehole log table by specification.

2nd, drill abnormality processing

It 1. being collapsed in drilling behind hole, should ascertain the reason and position, be analyzed and processed.Collapse hole not severe patient, can increase Mud balance continues to creep into；Severe patient's backfill is redrilled.

2. after there is drift sand phenomenon, mud balance should be increased, improve pressure in hole or be made big clod or adobe with clay Drift sand formation is squeezed into, strengthens retaining wall, blocks drift sand.

3. curved hole is not serious, rig can be readjusted or kelly continues to creep into.Serious curved hole, plum blossom hole, probe occurs Shi Shi, should backfill and repair hole, be repeated several times repair hole if necessary.Ballistic method repaiies hole, should backfill stone of the hard with angle rib and fill out more 0.5m。

4. there is shrinkage cavity, mud face or increasing mud balance in hole can be improved and use up and down the method for cleaning bottom of hole repeatedly, it is extensive Multiple holes footpath.

5. during generation bit freezing, it should not carry by force.Should ascertain the reason and bit location, take rock big rope or drill bit and other Measure, drill bit is set to lift again after loosening.

6. fall to bore, it should in time feel out the situation, ascertain the reason, take measures, handle as early as possible.As drill bit is buried, Silt particle should be removed first, then is salvaged.

The installation of the steel reinforcement cage of mechanical pile system is as follows in hole of the present utility model：

1st, steel reinforcement cage is transferred, and on-site supervision engineer should be checked the joint location of two section steel reinforcement cages.It is required that machinery Quality of connection meets Its Relevant Technology Standards code.Hang steel reinforcement cage and should be noted that its directionality, the length of every section of reinforcing bar and position should Meet design requirement.

2nd, after steel reinforcement cage sinks, elevation of top surface and the center of steel reinforcement cage to be checked.It should consolidate after position adjustment is good Set, quality inspection personnel and site supervision personnel sign and examine record.

3rd, steel reinforcement cage cage bar is all welded with reinforcement stirrup and preferably integral hoisting enters hole.When condition difficulty, sectional enters Hole, two sections should keep straight.

4th, after steel reinforcement cage enters hole, should fixedly positioning.

Conduit installation requirement is as follows in mechanical pile system in hole of the present utility model：

1st, pipe inner wall is answered smooth smoother, and internal diameter is consistent.

2nd, using preceding examination spellings, pressure testing, must not leak, and numbering and indicate yardstick from bottom to top.Conduit misalignment of axe according to Depending on hole depth, steel reinforcement cage internal diameter and flange external diameter difference, no more than the 0.5% of hole depth, 10cm is not also preferably greater than；Assembling When, the nut of connecting bolt is preferably upper；The pressure of pressure testing is preferably equal to 1.5 times of bottom hole hydrostatic pressure.

3rd, catheter length should be able to meet the perfusion of Underwater Concrete, and pipe joint is unable to leak, and after conduit decentralization, lower mouth is apart from hole Bottom hangs height and should be 30~50cm.

Underwater gliders in hole of the present utility model in mechanical pile system are as follows：

1st, the mud property of diverse location in thickness, and hole is precipitated at detection hole bottom, and Testing index value can not meet that design will Second of borehole cleaning must be carried out when asking, after detect again it is qualified after, next procedure construction can be carried out.

2nd, the slump of underwater concrete should use 16~21cm.

3rd, underwater concrete back cover, it is necessary to have water proof bolt, water proof bolt should have good water isolating and can smoothly discharge.

4th, after the storage capacity of concrete should meet that first batch of concrete enters hole, the depth in conduit Transducers Embedded in Concrete cannot be less than 1m；When pile body is longer, the depth in conduit Transducers Embedded in Concrete can be increased suitably.Underwater concrete answers continuous pouring, must not in Pause on way.

5th, underwater gliders face is preferably higher by design of pile top elevation 0.5-1.0m, cuts the stake top concrete mark after laitance Number it must is fulfilled for design requirement.

6th, during filling concrete, special messenger should be set and often measure conduit length of embedment, and made by code requirement easy to remember Record.

7th, in filling process, when because of conduit leak or extracting concrete surface, mechanical breakdown, operational error or other reasonses, When causing fracture accident, it should be redrilled or remedial measure can be studied with units concerned.

8th, the strength grade of concrete of stake has to comply with design requirement, and underwater concrete standardized test sample of maintenance intensity must accord with Close design strength grade 1.15 times.Concrete sample makes, and same match ratio per tour is no less than 1 group, per the disk of mixing 100 and not Same match ratio concrete more than 100 cubes, sampling must not be less than once；Same match ratio concrete per shift's mixing is not During 100 disk of foot, sampling is no less than once；Ready-mixed concrete should sample between the 1/4-3/4 of discharging, and each sample size should meet Concrete quality examines the desired amount of 1.5 times of item, but is no less than 0.2 side.Should at least one group of standard curing examination of indwelling per sub-sampling Part.

Need to carry out pile inspection after the completion of the piling of mechanical pile system in hole of the present utility model, specific examination requirements is such as Under：

1st, construction should meet the design requirements such as long stake, stake footpath, strength grade of concrete, must not have broken pile, concrete disintegration, Phenomena such as pressing from both sides mud occurs.

2nd, pile position deviation≤± 50mm, perpendicularity deviation≤1%, and can not be tilted to cheating.

3rd, single pile vertical resistance pressure bearing capacity all should be determined using static test for middle stake and skirt piles, amount detection is same Under the conditions of should not be less than 3, and should not be less than total amount of pile 1%.When engineering pile sum is when within 50,2 should not be less than.

4th, the sampling observation quantity of the pile integrity detection of concrete-pile should not be less than the 20% of total amount of pile, and must not be less than 10 Root.Within the scope of sampling observation stake number, pile integrity detection, detection are carried out by inspection stake to part from core drilling method or sound wave transmission method Quantity should not be less than the 10% of total amount of pile.

5th, should be according to code requirement indwelling test block.

As shown in Fig. 2 add according to a preferred embodiment pile foundation aperture of mechanical pile system in hole of the present utility model Solid structural representation.

In the present embodiment, pile foundation aperture bracing means 10 also includes aperture reinforcing layout structure.

In the present embodiment, the aperture reinforces layout structure and includes being located at pile foundation 3 of the stratum below 1, the aperture of pile foundation 3 Surrounding sets injected hole vertically, and Grouting Pipe 4 is inserted in the injected hole, has multiple perforates, Grouting Pipe on the tube wall of Grouting Pipe 4 Single liquid cement mortar is inoculated with 4.It effectively prevent the phenomenon of collapse hole before drilling using grouting and reinforcing to pile foundation aperture.

In the present embodiment, the top on the stratum 1 is equipped with supporting pad 2, the supporting pad spliced by more screw-thread steels and Into network structure, avoid the soil of boring surface from producing the phenomenon that collapses.

Choose 5 pile bodies in the present embodiment to be tested, in advance to the pile foundation aperture surrounding formations of construction are noted Slurry is reinforced and performs record, and reinforcing scope is 2m around the side of hole, and reinforcement depth is the lower 4-5m of just branch, and it is 1 to reinforce slurries：1 single liquid Cement mortar.After the pre-reinforcement measure experiment determined using this meeting, summarize again.Testing proves, all pile bodies in hole It is both needed to carry out aperture consolidation grouting before construction.

Referring next to shown in Fig. 3, according to group in a preferred embodiment of mechanical pile system in hole of the present utility model The structural representation of bench drill cylinder.

In the present embodiment, mechanical pile device 30 is bored from track-mounted drill 40 and assembled tubes brill 50 in the hole Hole.

In the present embodiment, the assembled tubes, which bore 50, includes cylinder 51, cylinder 51) centre be provided with pipe 53, this Pipe 53 is fixedly connected by support 52 with cylinder 51, and support 52 is made up of set square 54, is set on the edge of the set square 54 There are multiple drill bits 56；More steel wire ropes 55 are provided with cylinder 51, when the drilling tool encounters the boulder bed of easy plugging, brill is frequently carried, enters Entering to the cobble in cylinder 1 to be raised, and not fall out stake bottom..

In the present embodiment, the steel wire rope 55 is two layers, and two layers of steel wire rope 55 is uniformly interspersed, further It ensure that the cobble entered in cylinder 1 will be raised, do not fall out stake bottom.

In the present embodiment, the front end of the pipe 53 is provided with the connecting plate with drill bit 56.The benefit so designed is The drill bit 6 of the front end of pipe 3 first touches the cobble in rock stratum, is prepared for the work of drill bit 6 on subsequent set square 4, smashes week The rock stratum on side is easier.

It is last as shown in fig.4, being combined in a preferred embodiment according to mechanical pile system in hole of the present utility model The structural representation of another embodiment of drilling pipe.

The centre of cylinder 1 eliminates pipe unlike embodiment illustrated in fig. 3 one；Multiple drill bits 6 are uniformly distributed In the front end of connecting plate；Four big drill bits are uniformly distributed on the edge of cylinder 1.Due to eliminating pipe, the one of two layers of steel wire rope End is welded on the cross connecting plate of the end of cylinder 1, the phenomenon that steel wire rope is easily fallen off in the course of work.

It will be apparent to those skilled in the art that mechanical pile system includes each portion in this specification in hole of the present utility model Any combination divided.As space is limited and in order that specification is concise, these combinations are not discussed in detail one by one herein, but has seen After this specification, the scope of the utility model that any combination for each several part being made up of this specification is formed has not been sayed certainly It is bright.

Claims (10)

1. mechanical pile system in a kind of hole, including pile foundation boring device（20）, mechanical pile device, mechanical displacement device and peace Fill steel reinforcement cage in hole（60）, steel pipe column location and installation and pour the erecting device of conduit（70）With underwater gliders device （80）, it is characterised in that：The location and installation of steel pipe column and the erecting device for pouring conduit（70）Positioned at steel reinforcement cage（60）Top； Underwater gliders device（80）With the location and installation of steel pipe column and pour the erecting device of conduit（70）Connection；The system Also include pile foundation aperture bracing means（10）.

2. mechanical pile system in hole as claimed in claim 1, it is characterised in that：The mechanical pile device is from machine in hole Tool piling equipment（30）.

3. mechanical pile system in hole as claimed in claim 1, it is characterised in that：Pile foundation aperture bracing means（10）Including leading Grouting Pipe is set on hole inverted arch and side wall root（11）, excavation with guide pit device（12）, mud balance device in measured hole（13）, increase Add mud off device（14）With pile foundation hole-forming device（15）.

4. mechanical pile system in hole as claimed in claim 1, it is characterised in that：Pile foundation aperture bracing means（10）Also include Aperture reinforces layout structure.

5. mechanical pile system in hole as claimed in claim 4, it is characterised in that：The aperture, which reinforces layout structure, includes position In stratum（1）Following pile foundation（3）, pile foundation（3）Aperture surrounding set injected hole vertically, insertion Grouting Pipe in the injected hole （4）, Grouting Pipe（4）Tube wall on there is multiple perforates, Grouting Pipe（4）Inside it is inoculated with single liquid cement mortar.

6. mechanical pile system in hole as claimed in claim 5, it is characterised in that：Stratum（1）Top be equipped with supporting pad （2）, network structure that the supporting pad is spliced by more screw-thread steels.

7. mechanical pile system in hole as claimed in claim 2, it is characterised in that：Mechanical pile device in hole（30）From shoe Band churn（40）Bored with assembled tubes（50）Drilled.

8. mechanical pile system in hole as claimed in claim 7, it is characterised in that：Assembled tubes bore（50）Including cylinder（51）, Cylinder（51）Centre be provided with pipe（53）, the pipe（3）Pass through support（52）With cylinder（51）It is fixedly connected, support （52）By set square（54）Composition, the set square（54）Edge be provided with multiple drill bits（56）；Cylinder（51）It is interior be provided with it is more Root steel wire rope（55）.

9. mechanical pile system in hole as claimed in claim 8, it is characterised in that：Steel wire rope（55）For two layers, described two layers Steel wire rope（55）Uniformly it is interspersed.

10. mechanical pile system in hole as claimed in claim 8, it is characterised in that：Pipe（53）Front end be provided with bore Head（56）Connecting plate.