CN106049396A - Deep hole and ultra-deep hole static cone penetration test method and apparatus - Google Patents
Deep hole and ultra-deep hole static cone penetration test method and apparatus Download PDFInfo
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- CN106049396A CN106049396A CN201610464325.4A CN201610464325A CN106049396A CN 106049396 A CN106049396 A CN 106049396A CN 201610464325 A CN201610464325 A CN 201610464325A CN 106049396 A CN106049396 A CN 106049396A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
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- Mining & Mineral Resources (AREA)
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to a deep hole and ultra-deep hole static cone penetration test method and apparatus. The apparatus is provided with two to five sleeves with diameters from large to small, and each of all the sleeves is provided with a sleeve connector matched with the corresponding sleeve except the sleeve with the largest diameter. Each sleeve connector is provided with an annular tray, and threads are formed in the upper opening and the lower opening of each sleeve connector. When testing is carried out, a static cone penetration test is carried out by adopting a conventional static cone penetration method, the frictional resistance of the side wall of a feeler lever is too large, transmission cannot be effectively carried out to a cone penetration probe, and the depth of cone penetration is affected, overlaying soil is drilled in advance in a preboring manner, the apparatus is protected additionally, and the diameter ratios, the number of layers of the sleeves and the buried depth are selected according to the depth of cone penetration and the requirements for sleeve reducing. The sleeve with the largest diameter is buried in soil and serves as a fixing sleeve with soil friction, and the other sleeves are lowered one after another and are hung on the sleeve on the outermost layer through the annular trays. Hole cleaning is carried out to the preset depth, the static cone penetration probe and the feeler lever are used for testing through the sleeve with the smallest diameter and an alloy bit. With the deep hole and ultra-deep hole static cone penetration test method and apparatus, the deflection angle of the probe can be decreased, and the test depth can be increased.
Description
Technical field
The present invention relates to a kind of deep hole, superdeep holes static cone penetration test method and equipment, specifically preboring adding protects multiple
Sleeve pipe, to the frictional resistance of feeler inspection feeler lever and provides sidewise restraint releasing the soil body, can be applicable to deep hole, superdeep holes static sounding.
Background technology
Static sounding, as a kind of theory, the in-situ test of technology maturation, has in terms of obtaining every geological parameter
There is great superiority, be widely used.But Rigidity and the counter force system due to static sounding feeler lever itself
Reason, in dense sand stratum, conventional static sounding has once been only capable of the test degree of depth of 25～35m, and super 100m hole depth static(al) is tactile
Visit domestic being rarely reported.In China, In Middle And Lower Reaches of Changjiang River overlying cover layer is deep, soil layer stress state, strength characteristics, deformation
Characteristic, stress history, seepage flow greatly differ from each other with surface layer Rock soil Characteristics with consolidation etc., and conventional static sounding is far from satisfied prospecting
Requirement, even when having gravel layer or thick hard formation, conventional static sounding is the most helpless.For deep hole, superdeep holes static(al)
Feeler inspection, needs to overcome following difficulty:
(1) deep hole, superdeep holes static sounding feeler lever slenderness ratio are excessive, and soil layer cannot provide effective sidewise restraint, especially
Being in having broken ground or weak intercalated layer soil layer, feeler lever easily bends, fractures；
(2) during the exploration of waters, unsettled section of feeler lever is long, swings pressurized, is also easily caused it and fractures；
(3), when soil layer contains boulder and cobble interlayer or hard thick-layer, conehead cannot penetrate stratum；
(4) deep hole, superdeep holes static sounding, no matter ground conehead is installed the most vertical, has certain inclined behind injection stratum
Angle, and increase with the degree of depth and increase, according to a large number of experiments show that, after feeler inspection surpasses 60m, conehead drift angle is more than 15 °；
(5) deep hole, superdeep holes static sounding, feeler lever is excessive with soil body frictional force, and injection equipment easily reaches the injection limit,
Preboring mode need to be taked, reduce the frictional resistance of the soil body；
(6), when taking monolayer sleeve pipe, effective lateral rigidity can not only be provided, and " hoop " effect of sleeve bottom,
Hardening in the stratum making sleeve bottom, rigidity is very big, and conehead is difficult to, through sleeve pipe, enter stratum.
CN102261060 discloses and a kind of arrange the method for deep hole cone penetration test quiet spy pillar at soil layer superficial part and set
Standby, method is to arrange slips in the vertical shaft bottom of static contact-detection machine；By quiet spy pillar through slips；Promote the vertical of static contact-detection machine
Axle；With slips, quiet spy pillar is blocked；Press down the vertical shaft of static contact-detection machine.Equipment includes static contact-detection machine and quiet for blocking
Visiting the slips of pillar, static contact-detection machine has one for the actuating unit to soil layer injection, and actuating unit has transmission vertical shaft, and slips sets
In vertical shaft bottom.It utilizes and presses pillar under static contact-detection machine self power, is sent in soil layer by pillar, so, quiet at deep hole
In power cone penetration test, do not recycle rig and carry out pillar setting, a set of equipment can be transported less to job site, the most no longer need
Want being used alternatingly of two complete equipments, substantially increase efficiency of construction, and saved cost.
Summary of the invention
The present invention seeks to for above-mentioned present situation, it is desirable to provide a kind of cone penetration test adapting to deep hole, superdeep holes
Technique, can greatly reduce feeler lever side friction power and provide effective sidewise restraint, and then improves the deep hole of the feeler inspection degree of depth, ultra-deep
Hole cone penetration test equipment.
The implementation of the object of the invention is, deep hole, superdeep holes cone penetration test equipment, have 2-5 diameter by greatly to
Little sleeve pipe, in addition to the sleeve pipe of maximum gauge, each sleeve pipe has matched casing joint；Ring is had in each casing joint
Shape pallet, has screw thread in upper and lower mouth；Each sleeve pipe is connected in the casing joint of matched therewith by screw thread, and alloy bit passes through
Screw thread is connected on the sleeve pipe of minimum diameter.
The method making cone penetration test with deep hole, superdeep holes cone penetration test equipment, specifically comprises the following steps that
1) upper overburden layer is used conventional static sounding method of testing preboring, then add the multiple sleeve pipe of the equipment of protecting；
2) according to actual condition, the feeler inspection degree of depth and casing diameter variable requirement, equipment casing diameter proportioning and the number of plies are selected, and
The buried depth of each layer sleeve pipe；
3) maximum gauge sleeve pipe is squeezed in soil layer, rely on soil layer frictional resistance to support, as fixed sleeving and cannula system
Bearing tube；
4) in succession transfer each diameter sleeve pipe, the annular pallet of each diameter casing joint is hung on maximum gauge sleeve pipe successively
On；
5) connecing alloy bit, clear hole to desired depth at minimum diameter its lower end, static sounding probe and feeler lever pass through
Minimum diameter sleeve pipe carries out cone penetration test.
Use the present invention can greatly reduce feeler lever side friction power and provide effective sidewise restraint, reduce probe drift angle,
Thus increase the test degree of depth.The present invention adapts to the cone penetration test of deep hole, superdeep holes.
Accompanying drawing explanation
Fig. 1 is the structural representation that equipment uses four casing joints,
Fig. 2 is five sleeve pipe socket mode figures,
Fig. 3 is casing joint enlarged drawing.
Detailed description of the invention
With reference to the accompanying drawings, as a example by five weight sleeve pipes in detail the present invention is described in detail.
With reference to Fig. 1,2,3, deep hole, superdeep holes cone penetration test equipment have the sleeve pipe that 5 diameters are descending, maximum straight
Beyond the sleeve pipe in footpath, each sleeve pipe has matched casing joint, and 5 casing diameters are respectively 180mm sleeve pipe, and (maximum is straight
Footpath), 146mm sleeve pipe, 127mm sleeve pipe, 110mm sleeve pipe, 63.5mm sleeve pipe, matched casing joint is respectively 146mm
Casing joint 1,127mm casing joint 2,110mm casing joint 3,63.5mm casing joint 4.φ 63.5 casing part passes through silk
Snapping alloy bit.
There is annular pallet 6 in each casing joint, in upper and lower mouth, have screw thread 5.Screw thread in upper and lower mouth is square screw thread,
Buckle teeth width 2mm.
A, b, c, d, e, f, g, h, i, j, k of 146mm casing joint be respectively 139mm, 160mm, 190mm, 135mm,
140.5mm、146mm、60mm、60mm、40mm、12mm、180mm。
A, b, c, d, e, f, g, h, i, j, k of 127mm casing joint be respectively 120mm, 140mm, 190mm, 116mm,
121.5mm、127mm、60mm、60mm、40mm、12mm、180mm。
A, b, c, d, e, f, g, h, i, j, k of 110mm casing joint be respectively 101mm, 120mm, 190mm, 95mm,
103mm、110mm、60mm、60mm、40mm、12mm、180mm。
A, b, c, d, e, f, g, h, i, j, k of 63.5mm casing joint be respectively 55mm, 100mm, 150mm, 47.5mm,
56.5mm、80mm、60mm、60mm、40mm、12mm、180mm。
The wherein internal diameter of the inwall of each casing joint of a-, the diameter of b-annular pallet above section, c-annular pallet outer end
Diameter, the internal diameter of screw thread above section under d-, screw thread external diameter under e, f-annular pallet is with the diameter of lower part, and the upper screw thread of g-is long
Screw thread length under degree, h-, i-annular pallet above section is high, j-annular pallet thickness, and k-annular pallet is high with lower part.
The present invention is used to carry out specifically comprising the following steps that of cone penetration test
1) upper overburden layer is used conventional static sounding method of testing preboring, then add the multiple sleeve pipe of the equipment of protecting；
When occurring that feeler lever sidewall resistance is excessive, probe meets hard formation or drift angle is excessive should not continue load condition, by feeler lever and
Probe takes out ground.
When assuming test to 60m, occur that feeler lever sidewall resistance is excessive, excessive should not the continuation of chance hard formation or drift angle of popping one's head in loads
Situation, takes out ground by feeler lever and probe；φ 180mm sleeve pipe is squeezed into stratum, and concrete driving depth is according to stratum conditional decision.
2) according to actual condition, the feeler inspection degree of depth and casing diameter variable requirement, equipment casing diameter proportioning and the number of plies are selected, and
The buried depth of each layer sleeve pipe.
3) squeeze into the φ 180mm sleeve pipe in soil layer, rely on soil layer frictional resistance to support, as fixed sleeving, and play load-bearing work
With.
4) geotechnical boring mode is used to bore by the soil layer in the range of φ 146mm sleeve pipe, it is assumed that 40m；Squeeze into φ 146mm set
Pipe, by φ 146mm casing joint 1 on edgewise wire snapping, the annular pallet of φ 146mm casing joint 1 is suspended on φ 180mm set
On the pipe mouth of pipe.Geotechnical boring mode is used to bore by the soil layer in the range of φ 127mm, φ 110mm successively, it is assumed that 50m,
59.50m；Squeeze into φ 127mm sleeve pipe, φ 110mm sleeve pipe, connect φ 127mm casing joint 2, φ 110mm casing joint 3.
In the case of sleeve pipe sampling is by soil layer locking, sleeve pipe connects the alloy bit of respective diameters, through the expansion of alloy bit
Hole acts on, and can form the aperture of respective diameters.
In the case of in the sampling of φ 110mm sleeve pipe by soil layer locking, φ 110mm sleeve pipe connects φ 91mm alloy bit 7, warp
The reaming effect of alloy bit, can form 110mm aperture.
5) connecing alloy bit 7 at φ 63.5mm its lower end, alloy bit and φ 63.5mm sleeve pipe are transferred at the bottom of prebored hole,
59.50m.Connect drilling equipment, coordinate mud and alloy bit, sediment, scum silica frost at the bottom of hole are carried out.Clean complete, will bore
Spy casing joint is unloaded, and changes φ 63.5mm casing joint 4, is superimposed upon the ring of φ 110 casing joint 3 by annular pallet
On shape pallet.Feeler lever and probe are tested through φ 63.5mm sleeve pipe and φ 63.5mm sleeve pipe alloy bit, continuation static sounding.
The present invention has been successfully applied to the prospecting of Bangladesh's handkerchief moral Maduo purposes Bridge Construction stage, and static sounding hole depth exists
Between 80～120m, maximum hole depth 126m, probe drift angle is less than 5 °, and probe penetrates and is spaced about 20m, thickness respectively may be about 25m,
In the two-layer of 10m, coarse sand folder gravel layer, result of the test is successfully applied to test pile and the construction of main bridge pier, obtained owner and
The consistent favorable comment of management.Being summed up by lot of experiments, it is preliminary to passage marine site, middle mountain section that multiple casing methods also extends to Shenzhen
Prospecting and in detail prospecting, data results is the foundation that design and construction provide abundance.
Claims (10)
1. deep hole, superdeep holes cone penetration test equipment, it is characterised in that: there is the sleeve pipe that 2-5 diameter is descending, except maximum
Beyond the sleeve pipe of diameter, each sleeve pipe has matched casing joint；Annular pallet, upper and lower mouth is had in each casing joint
Inside there is screw thread；Each sleeve pipe is connected in the casing joint of matched therewith by screw thread, and alloy bit is connected on minimum straight by screw thread
On the sleeve pipe in footpath.
Deep hole the most according to claim 1, superdeep holes cone penetration test equipment, it is characterised in that: there are 5 diameters by greatly
To little sleeve pipe, in addition to the sleeve pipe of maximum gauge, each sleeve pipe has matched casing joint；5 casing diameters are respectively
For 180mm, 146mm, 127mm, 110mm, 63.5mm, φ 63.5 casing part passes through threaded engagement gold drill bit.
Deep hole the most according to claim 1, superdeep holes cone penetration test equipment, it is characterised in that: the silk in upper and lower mouth
Button is square screw thread, buckle teeth width 2mm.
Deep hole the most according to claim 1, superdeep holes cone penetration test equipment, it is characterised in that: 146mm casing joint
A, b, c, d, e, f, g, h, i, j, k be respectively 139mm, 160mm, 190mm, 135mm, 140.5mm, 146mm, 60mm, 60mm,
40mm、12mm、180mm；
The wherein internal diameter of the inwall of each casing joint of a-, the diameter of b-annular pallet above section, c-annular pallet outer diameter,
The internal diameter of screw thread above section under d-, screw thread external diameter under e, f-annular pallet is with the diameter of lower part, under g-upper screw thread length, h-
Screw thread length, i-annular pallet above section is high, j-annular pallet thickness, and k-annular pallet is high with lower part.
5. according to the deep hole described in claim 1 or 4, superdeep holes cone penetration test equipment, it is characterised in that: 127mm sleeve pipe
A, b, c, d, e, f, g, h, i, j, k of joint be respectively 120mm, 140mm, 190mm, 116mm, 121.5mm, 127mm, 60mm,
60mm、40mm、12mm、180mm。
6. according to the deep hole described in claim 1 or 4, superdeep holes cone penetration test equipment, it is characterised in that: 110mm sleeve pipe
A, b, c, d, e, f, g, h, i, j, k of joint be respectively 101mm, 120mm, 190mm, 95mm, 103mm, 110mm, 60mm,
60mm、40mm、12mm、180mm。
7. according to the deep hole described in claim 1 or 4, superdeep holes cone penetration test equipment, it is characterised in that: 63.5mm sleeve pipe
A, b, c, d, e, f, g, h, i, j, k of joint be respectively 55mm, 100mm, 150mm, 47.5mm, 56.5mm, 80mm, 60mm,
60mm、40mm、12mm、180mm。
8. the method making cone penetration test with the deep hole described in claim 1, superdeep holes cone penetration test equipment, its feature
It is: specifically comprise the following steps that
1) upper overburden layer is used conventional static sounding method of testing preboring, then add the multiple sleeve pipe of the equipment of protecting；
2) according to actual condition, the feeler inspection degree of depth and casing diameter variable requirement, equipment casing diameter proportioning and the number of plies, and each layer are selected
The buried depth of sleeve pipe；
3) maximum gauge sleeve pipe is squeezed in soil layer, rely on soil layer frictional resistance to support, as fixed sleeving and cannula system load-bearing
Pipe；
4) in succession transfer each diameter sleeve pipe, the annular pallet of each diameter casing joint is hung on maximum gauge sleeve pipe successively；
5) alloy bit, clear hole to desired depth, static sounding probe and feeler lever are connect by minimum at minimum diameter its lower end
Diameter sleeve pipe carries out cone penetration test.
Deep hole the most according to claim 8, superdeep holes static cone penetration test method, it is characterised in that: when feeler lever side occurs
Wall resistance is excessive, probe meets hard formation or drift angle is excessive should not continue load condition, and feeler lever and probe are taken out ground.
Deep hole the most according to claim 8, superdeep holes static cone penetration test method, it is characterised in that: sample quilt at sleeve pipe
In the case of soil layer locking, sleeve pipe connects the alloy bit of respective diameters, through the reaming effect of alloy bit, respective straight can be formed
The aperture in footpath.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610464325.4A CN106049396B (en) | 2016-06-23 | 2016-06-23 | Deep hole, superdeep holes static cone penetration test method and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610464325.4A CN106049396B (en) | 2016-06-23 | 2016-06-23 | Deep hole, superdeep holes static cone penetration test method and equipment |
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| CN106049396A true CN106049396A (en) | 2016-10-26 |
| CN106049396B CN106049396B (en) | 2018-07-06 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106388875A (en) * | 2016-11-30 | 2017-02-15 | 重庆西山科技股份有限公司 | Rotary cutting operation assembly |
| CN106491166A (en) * | 2016-11-30 | 2017-03-15 | 重庆西山科技股份有限公司 | Rotary cutter |
| CN108570978A (en) * | 2018-06-05 | 2018-09-25 | 山西冶金岩土工程勘察有限公司 | Hollow side wall wiring formula static cone penetration equipment |
| CN109695239A (en) * | 2019-02-28 | 2019-04-30 | 中国科学院武汉岩土力学研究所 | A kind of telescopic static pressure feeler lever and application method |
| CN115198716A (en) * | 2022-08-16 | 2022-10-18 | 中铁上海设计院集团有限公司 | Progressive reducing method penetration test method for deep soil penetration test |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106491166B (en) * | 2016-11-30 | 2023-07-04 | 重庆西山科技股份有限公司 | Rotary cutting tool |
| CN108570978A (en) * | 2018-06-05 | 2018-09-25 | 山西冶金岩土工程勘察有限公司 | Hollow side wall wiring formula static cone penetration equipment |
| CN108570978B (en) * | 2018-06-05 | 2024-03-12 | 山西冶金岩土工程勘察有限公司 | Hollow side wall wiring type static cone penetration test equipment |
| CN109695239A (en) * | 2019-02-28 | 2019-04-30 | 中国科学院武汉岩土力学研究所 | A kind of telescopic static pressure feeler lever and application method |
| CN115198716A (en) * | 2022-08-16 | 2022-10-18 | 中铁上海设计院集团有限公司 | Progressive reducing method penetration test method for deep soil penetration test |
| CN115198716B (en) * | 2022-08-16 | 2023-12-26 | 中铁上海设计院集团有限公司 | Progressive reducing method penetration test method for deep soil penetration test |
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