CN115354649A - TRD construction method for pebble bed ultra-deep falling-bottom rock - Google Patents
TRD construction method for pebble bed ultra-deep falling-bottom rock Download PDFInfo
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- CN115354649A CN115354649A CN202211034769.6A CN202211034769A CN115354649A CN 115354649 A CN115354649 A CN 115354649A CN 202211034769 A CN202211034769 A CN 202211034769A CN 115354649 A CN115354649 A CN 115354649A
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- machine
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- trd
- point position
- rock stratum
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- 238000010276 construction Methods 0.000 title claims abstract description 66
- 239000011435 rock Substances 0.000 title claims abstract description 55
- 238000005520 cutting process Methods 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims abstract description 8
- 238000005553 drilling Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 15
- 239000002689 soil Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/187—Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
-
- 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
- E02D1/02—Investigation of foundation soil in situ before construction work
- E02D1/022—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil
- E02D1/025—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil combined with sampling
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Soil Sciences (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a TRD construction method for an pebble layer ultra-deep falling-bottom rock, which comprises the following construction steps: (1) Designing a leading hole point position according to a drawing, and locating and inserting a short steel bar to identify the leading hole point position at a fixed point through RTK measurement; (2) Laying a steel plate on the ground near the hole leading point, stopping the rotary excavating machine on the steel plate, guiding a drill bit of the rotary excavating machine to align to the hole leading point, and starting the rotary excavating machine to enable the drill bit of the rotary excavating machine to drill into the rock stratum; (3) After the rotary drilling machine in the step (2) drills into the rock stratum, taking out a rock sample from each point position in the rock stratum, respectively recording the elevations of the pebble layer, the strongly weathered rock stratum and the moderately weathered rock stratum according to the rock sample, and drawing a stratum change curve according to the elevation data; and (4) carrying out TRD construction on the point position of the lead hole by using a TRD construction machine. The invention solves the problem that the TRD construction machine is difficult to enter the rock to perform cutting work when the rock stratum strength is high in the prior art.
Description
Technical Field
The invention relates to the technical field of TRD construction processes, in particular to a TRD construction method for an ultra-deep falling bottom rock of an egg stone layer.
Background
The TRD construction method is a construction process of inserting a cutting box with a cutting chain and a cutter head which meet the design depth into the ground, and injecting cement slurry into the ground while performing longitudinal cutting and transverse propelling to form a groove so as to fully mix and stir the cement slurry with an original ground to form a continuous wall with equal thickness underground. At present, the bottom-falling type rock-entering TRD water-stop curtain construction method applied to the project of building large-scale deep foundation pits in China is less, rock stratum in a foundation pit enclosing area fluctuates and changes, the construction operation of rock-entering guide holes in multiple sections of the TRD is blocked, the wall forming quality and the water-stop effect of the TRD are seriously influenced, in the prior art, rock-entering construction is required, construction processes such as diaphragm walls or triaxial cement stirring or high-pressure jet grouting piles are generally adopted, compared with triaxial cement stirring, the TRD construction method is a continuous wall body with equal thickness, the water-stop effect is good, and compared with diaphragm walls and cast-in-place piles, the TRD construction method is less in slurry discharge amount, high in construction speed and cost-saving; in the prior art, the TRD equipment does not have the capability of rock entering construction, because the pebble bed has more and compact stones, the abrasion consumption is large when a chain cutter of the TRD construction machine rotates and cuts, so that the cutter row is greatly damaged and needs to be maintained frequently, the construction efficiency is further influenced, and the TRD construction machine is difficult to enter the rock stratum for cutting when the rock stratum strength is high.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a TRD construction method for a pebble layer ultra-deep falling bottom rock, which aims to solve the problem that a TRD construction machine in the prior art is difficult to enter a rock to perform cutting work when the rock layer strength is high.
In order to achieve the aim, the invention provides a TRD construction method for an ultra-deep falling-bottom rock on an pebble layer, which comprises the following construction steps:
(1) Designing a leading hole point position according to a drawing, and locating and inserting a short steel bar to identify the leading hole point position at a fixed point through RTK measurement;
(2) Laying a steel plate on the ground near the hole leading point, stopping the rotary excavating machine on the steel plate, guiding a drill bit of the rotary excavating machine to align to the hole leading point, and starting the rotary excavating machine to enable the drill bit of the rotary excavating machine to drill into the rock stratum;
(3) After the rotary drilling machine in the step (2) drills into the rock stratum, taking out a rock sample from each point position in the rock stratum, respectively recording the elevations of the pebble layer, the strongly weathered rock stratum and the moderately weathered rock stratum according to the rock sample, and drawing a stratum change curve according to the elevation data;
(4) And carrying out TRD construction on the hole leading point position by a TRD construction machine.
The technical scheme is adopted, and the method has the advantages that: an operator compiles a construction scheme of the waterproof curtain according to the requirement of a design drawing, determines a lead hole point position on the drawing according to the lead hole distance on the design scheme, extracts and records the lead hole coordinate, determines the coordinate position of the lead hole on the external bottom surface by an RTK measuring and point placing method according to the lead hole position, inserts a short steel bar to fix the point mark, lays a steel plate on the bottom surface near the lead hole point position after the lead hole is determined so that the rotary excavating machine stays on the steel plate, drives the rotary excavating machine to enable a drill bit of the rotary excavating machine to be aligned with the lead hole point position, then enables the drill bit of the rotary excavating machine to drill into a rock stratum, records the elevation of each rock stratum according to the extracted rock posture 2242242242242242243 of each rock stratum, namely records the elevation of a pebble layer, a strong rock stratum and a medium weathered rock stratum, draws a stratum change curve according to the elevation data, and operates a TRD construction machine to perform TRD construction on the lead hole point position after the curve drawing is completed; in the technology, an operator firstly carries out rotary excavating operation on the hole leading point by the rotary excavator, when a drill bit of the rotary excavator drills into a rock stratum, the impact force of the rotary excavator per se can disperse the rock stratum layout, namely the rock stratum is relatively loose, the chain cutter of a subsequent TRD construction machine is longitudinally inserted and transversely cut more quickly, and meanwhile, the cobble layer is impacted by the rotary excavator to become loose, so that stones in the cobble layer cannot be densely stacked, and further the problem that the chain cutter of the TRD construction machine is excessively abraded or even damaged by a cutter row is solved; according to the technology, the cutting route of the TRD construction machine can be guided according to the rock stratum change point position according to the stratum change curve drawn according to the rock stratum elevation data, so that the cutting efficiency is accelerated, and the wall forming quality can be improved.
The invention further provides that: the method also comprises a step (S1) between the step (3) and the step (4): (S1) designing a control line according to a drawing and extracting corresponding coordinates, placing a stay wire through RTK measurement, and scattering a white gray line to guide the advancing and cutting route of the TRD construction machine in the step (4).
The technical scheme is adopted, and the method has the advantages that: according to the distance relationship between the TRD positioning and equipment walking path on the drawing and the TRD, a control line is shifted out, coordinates are extracted from the drawing, then an operator adopts RTK measurement to place a point and pull the line, a white gray line is scattered according to the coordinate position, the advancing path and the cutting path of the construction machine are further correctly guided, the cutting process is ensured not to make mistakes, and the wall forming quality can be improved while the cutting efficiency is ensured.
The invention further sets up: in the step (4), the TRD construction machine moves forwards transversely to cut into grooves, the TRD construction machine stops cutting and retreats to cut after cutting for a certain distance, and a chain cutter on the TRD construction machine rotates at a high speed in the cutting process.
The technical scheme is adopted, and the method is beneficial to that: when the TRD construction method machine is operated to cut, injecting cutting fluid to cut when the TRD construction method machine transversely moves forwards in the first step, and stopping cutting after a certain distance; secondly, the main machine reversely returns, namely moves towards the opposite direction, and the chain-shaped cutter rotates in the moving process to further mix and stir the cut soil; and then make the grooving quality higher, can also improve cutting efficiency simultaneously.
The invention further provides that: and after the TRD construction method machine is retracted and cut, the main machine returns to the positive direction and the curing liquid is poured into the chain-shaped cutter.
The technical scheme is adopted, and the method has the advantages that: in the TRD method in the technology, the chain is adopted to rotate along the cutter to drive the cement-soil slurry to be stirred up and down, so that the uniformity of the cement-soil slurry with full depth and full section can be ensured, and the phenomenon of wall body layering is avoided.
The invention further provides that: in the step (4), before construction, the miscellaneous soil near the hole leading point position is cleaned.
The technical scheme is adopted, and the method has the advantages that: the construction efficiency can be effectively improved by cleaning up the miscellaneous soil near the point of the hole leading point before the TRD construction method is used for construction, and meanwhile, the cutting is not influenced.
Detailed Description
The invention provides a TRD construction method for an ultra-deep falling-bottom rock on an pebble layer, which comprises the following construction steps:
(1) Designing a leading hole point position according to a drawing, and locating and inserting a short steel bar to identify the leading hole point position at a fixed point through RTK measurement;
(2) Laying a steel plate on the ground near the point position of the pilot hole, stopping the rotary excavating machine on the steel plate, guiding a drill bit of the rotary excavating machine to align the drill bit with the point position of the pilot hole, and starting the rotary excavating machine to enable the drill bit of the rotary excavating machine to drill into the rock stratum;
(3) After the rotary excavating machine in the step (2) drills into the rock stratum, taking out a rock sample from each point position in the rock stratum, respectively recording the elevations of the pebble layer, the strongly weathered rock stratum and the medium weathered rock stratum according to the rock samples, and drawing a stratum change curve according to the elevation data;
(4) And carrying out TRD construction on the hole leading point position by a TRD construction machine.
Further: the method also comprises a step (S1) between the step (3) and the step (4): (S1) designing a control line according to a drawing, extracting corresponding coordinates, placing a point and pulling a line through RTK measurement, and scattering a white gray line to guide the advancing and cutting route of the TRD construction machine in the step (4); in the step (4), the TRD construction machine moves forwards transversely to cut into grooves, the TRD construction machine stops cutting and performs backward cutting after cutting for a certain distance, and a chain cutter on the TRD construction machine rotates at a high speed in the cutting process; after the TRD construction method machine is withdrawn and cut, the main machine returns to the positive direction and solidified liquid is poured into the chain-shaped cutter; and (4) cleaning up the miscellaneous soil near the point of the pilot hole before construction.
While there have been shown and described what are at present considered to be the fundamental and essential features of the invention and advantages thereof, it will be understood by those skilled in the art that the invention is not limited by the foregoing embodiments, but is described in the foregoing description only for the purpose of illustrating the principles of the invention and is subject to various changes and modifications without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (5)
1. A TRD construction method for an ultra-deep falling-bottom rock on an egg layer is characterized by comprising the following steps: the method comprises the following construction steps:
(1) Designing a leading hole point position according to a drawing, and locating and inserting a short steel bar to identify the leading hole point position at a fixed point through RTK measurement;
(2) Laying a steel plate on the ground near the point position of the pilot hole, stopping the rotary excavating machine on the steel plate, guiding a drill bit of the rotary excavating machine to align the drill bit with the point position of the pilot hole, and starting the rotary excavating machine to enable the drill bit of the rotary excavating machine to drill into the rock stratum;
(3) After the rotary drilling machine in the step (2) drills into the rock stratum, taking out a rock sample from each point position in the rock stratum, respectively recording the elevations of the pebble layer, the strongly weathered rock stratum and the moderately weathered rock stratum according to the rock sample, and drawing a stratum change curve according to the elevation data;
(4) And carrying out TRD construction on the hole leading point position by a TRD construction machine.
2. One of the above-mentioned claims 1, characterized in that: the method is characterized in that a step (S1) is further included between the step (3) and the step (4):
(S1) designing a control line according to a drawing, extracting corresponding coordinates, placing a point and pulling a line through RTK measurement, and scattering a white gray line to guide the advancing and cutting route of the TRD construction machine in the step (4).
3. The device according to claim 1, characterized in that: in the step (4), the TRD construction machine moves forwards transversely to cut into grooves, the TRD construction machine stops cutting and retreats to cut after cutting for a certain distance, and a chain cutter on the TRD construction machine rotates at a high speed in the cutting process.
4. One of the claims 3, characterized in that: and after the TRD construction method machine is withdrawn and cut, the main machine returns to the positive direction and the curing liquid is poured into the chain-shaped cutter.
5. The device according to claim 1, characterized in that: and (4) cleaning up the miscellaneous soil near the point of the pilot hole before construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211034769.6A CN115354649A (en) | 2022-08-26 | 2022-08-26 | TRD construction method for pebble bed ultra-deep falling-bottom rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211034769.6A CN115354649A (en) | 2022-08-26 | 2022-08-26 | TRD construction method for pebble bed ultra-deep falling-bottom rock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115354649A true CN115354649A (en) | 2022-11-18 |
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|---|---|---|---|
| CN202211034769.6A Pending CN115354649A (en) | 2022-08-26 | 2022-08-26 | TRD construction method for pebble bed ultra-deep falling-bottom rock |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008101429A (en) * | 2006-10-20 | 2008-05-01 | Land Creative:Kk | Diaphragm wall construction method |
| JP5133450B1 (en) * | 2011-11-07 | 2013-01-30 | 株式会社不動テトラ | Subsurface continuum creation method using in situ soil |
| CN111636455A (en) * | 2020-05-27 | 2020-09-08 | 上海宝冶集团有限公司 | Comprehensive construction method of TRD (Top gas recovery device) and rotary drilling lead hole depth waterproof curtain |
| CN111749229A (en) * | 2020-07-07 | 2020-10-09 | 江苏高固建设工程有限公司 | Construction method of ultra-deep equal-thickness cement soil wall capable of falling into rock |
| CN113756286A (en) * | 2021-08-09 | 2021-12-07 | 上海市基础工程集团有限公司 | Construction method for implementing underground water soil continuous steel wall by TRD method |
| CN114215070A (en) * | 2021-12-23 | 2022-03-22 | 浙江省建筑设计研究院 | Super-deep TRD (blast furnace direct reduction) wall forming construction method for gravel water-rich stratum based on assembled L-shaped guide wall |
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-
2022
- 2022-08-26 CN CN202211034769.6A patent/CN115354649A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008101429A (en) * | 2006-10-20 | 2008-05-01 | Land Creative:Kk | Diaphragm wall construction method |
| JP5133450B1 (en) * | 2011-11-07 | 2013-01-30 | 株式会社不動テトラ | Subsurface continuum creation method using in situ soil |
| CN111636455A (en) * | 2020-05-27 | 2020-09-08 | 上海宝冶集团有限公司 | Comprehensive construction method of TRD (Top gas recovery device) and rotary drilling lead hole depth waterproof curtain |
| CN111749229A (en) * | 2020-07-07 | 2020-10-09 | 江苏高固建设工程有限公司 | Construction method of ultra-deep equal-thickness cement soil wall capable of falling into rock |
| CN113756286A (en) * | 2021-08-09 | 2021-12-07 | 上海市基础工程集团有限公司 | Construction method for implementing underground water soil continuous steel wall by TRD method |
| CN114320360A (en) * | 2021-12-15 | 2022-04-12 | 山东科技大学 | TRD and surface deep hole half-section grouting combined advanced waterproof curtain construction method |
| CN114215070A (en) * | 2021-12-23 | 2022-03-22 | 浙江省建筑设计研究院 | Super-deep TRD (blast furnace direct reduction) wall forming construction method for gravel water-rich stratum based on assembled L-shaped guide wall |
Non-Patent Citations (2)
| Title |
|---|
| 李瑛;邓以亮;胡琦;张治纯;: "卵砾地层中TRD工法水泥土连续墙施工方法研究", 施工技术, vol. 47, no. 01, pages 28 - 31 * |
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Application publication date: 20221118 |
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