CN101270573A - Large area sawed joint cutting construction method of concrete gravity dam cross joint - Google Patents

Large area sawed joint cutting construction method of concrete gravity dam cross joint Download PDF

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Publication number
CN101270573A
CN101270573A CNA2008100174173A CN200810017417A CN101270573A CN 101270573 A CN101270573 A CN 101270573A CN A2008100174173 A CNA2008100174173 A CN A2008100174173A CN 200810017417 A CN200810017417 A CN 200810017417A CN 101270573 A CN101270573 A CN 101270573A
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drilling
cutting
core
dam
hole
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CN100572676C (en
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李东锋
潘纪良
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Beijing Fayan Engineering Technology Co., Ltd.
Sinohydro Bureau 3 Co Ltd
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SINOHYDRO ENGINEERING BUREAU
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Abstract

The invention discloses a concrete gravity dam transverse joint large area sawing and cutting construction method which consists two parts of drilling and cutting; the construction method is carried out according to the following steps: selecting a full hydraulic drill as a drilling tool; confirming the drilled parameters; drilling and fetching the core; cataloging the fetched rock core; measuring the hole deviation of drilling; selecting a diamond wire saw to sew and cut; the cutting method, selecting horizontal drilling to finish the transverse joint cutting of the dam, selecting a diamond rope and confirming the cutting parameters; the linear speed of cutting should reach 18m/s to 22m/s; the cutting washing liquid pump amount at least reaches 70L/min, then the dam can be under a normal running state; the sawing construction does not affect the dam to run safely, does not damage the dam body structure, does not damage the transverse joint of the dam body to stop water, has a low cost, has a fast construction speed, has a high construction precision and can be broadly applied in the reinforcing and alternation constructions of the old dams and disabled dams in the engineering fields of water conservancy and hydropower.

Description

Large area sawed joint cutting construction method of concrete gravity dam cross joint
Technical field
The present invention relates to the big Ju cutting construction of Hydraulic and Hydro-Power Engineering technology, be specifically related to large area sawed joint cutting construction method of concrete gravity dam cross joint.
Background technology
In industry and the dismounting of civilian construction, rebuilding construction, use high-power circular diamond sawblade or diamond chain saw cutting Concrete Construction much to see, construction technology is comparatively ripe.The object that cuts in the worker China Democratic National Construction Association is generally concrete slab, beam, members such as post, the cutting area is little, difficulty of construction is low, construction environment is more satisfactory, and in Hydraulic and Hydro-Power Engineering, the concrete large tracts of land is cut beyond example still, certain key water control project preparatory works right bank concrete dam turning monolith (being made up of 6 single monoliths) is protruding ogee downstream in the plane, the dam transverse joint is in the milk in the preparatory works, 6 single monoliths are coupled to for an integral body, and under the temperature influence, summer, dam body was extruded distortion downstream, end, dam foundation upstream tension, add the reservoir level effect, draw the district to develop near the curtain line, uplift pressure increases; The extruding in winter disappears, distortion returns to normal.For eliminating the stable and disadvantageous distortion of stress because of the dam body that produced by the temperature cycle variation for a long time of turning monolith, guarantee curtain antiseepage quality, need repair dam body, just to make 6 monoliths by an integral body become can independent deformation individuality, satisfy the (see figure 4) that requires of stress release, thereby reach the purpose of the monolith reversal deformation that reduces to turn.Designing unit determines to adopt eliminates " saw kerf " scheme that connects between the monolith transverse joint, and the seam width of hoping for success is 8~12mm.Largest unit cutting area is 209m 2, the cutting engineering quantity adds up to 710m 2
It is investigated that the concrete gravity dam transverse joint large tracts of land saw kerf cutting construction of this project still belongs to the first time at home and abroad, if adopt available coagulation soil cutting technique not reach the defect repair purpose.
Summary of the invention
The purpose of this invention is to provide a kind of dam at normal operating condition, the saw kerf construction does not influence the dam safety operation, does not damage dam structure, does not destroy dam body transverse joint sealing, the construction precision height, the large area sawed joint cutting construction method of concrete gravity dam cross joint that cost is low.
In order to overcome the deficiencies in the prior art, technical scheme of the present invention is to solve like this: a kind of large area sawed joint cutting construction method of concrete gravity dam cross joint, to form by boring and cutting two parts, and its job practices is carried out according to the following steps:
1) boring
1. drilling machine configuration
Select all-hydraulic auger for use, adopt thin diamond wall to creep into the technology pore-forming, its vertical drilling bore is selected φ 140mm~φ 150mm, the horizontal drilling bore is selected φ 105mm~φ 110mm, adopt clear water to do cleaning fluid, simplex reciprocating pump supply flushing liquor, auxiliary A font boring tower and other corresponding supporting drilling tool carry out drilling construction;
The drilling tool grating requires: the reamer external diameter is than the big 0.3-0.5mm of drill bit, and the core barrel outside dimension is than the little 3mm of bit size, and drilling rod is selected Φ 50 standard geology tubing for use, and centralizer external diameter and core barrel external diameter equate;
2. drilling parameter is determined: creep into state according to three kinds, creep under the situation at every kind and all should adjust the drilling parameter value, its parameter adjustment scheme sees the following form:
Creep into state The pressure of the drill (kN) Drilling speed (r/min) Pump amount (L/min)
Perforate is crept into ??2~7 ??200~700 ??20~60
Normally creep into ??5~13 ??700~1500 ??25~80
Unusually creep in the hole ??1~5 ??130~450 ??25~70
3. boring and coring
Adopt jump ring to get the core method and carry out taking of core, the boring normal condition, the length of getting core depends on the integrality of core and the length of core barrel, when core is got in decision, stop the supply of flushing liquor earlier, slowly little drilling tool of carrying makes progress, allow jump ring slide from top to down, tightly embrace core, under the powerful torsional interaction of drilling tool slow-speed at bit body inwall with certain taper, twist off core, reintroduce drilling tool, withdraw from core, for the ease of analyzing situation in the hole with opposite program, the core that takes out need be edited and recorded, and conscientiously fills in the borehole log table;
4. the hole deviation of holing is measured
In the whole drilling process, the external diameter of drill bit and drilling tool can wear and tear gradually, needs strict the measurement during use, the use of ranking, by earlier little with internal diameter, external diameter is big, and the back is big with internal diameter, the principle that external diameter is little, whenever creep into 3 meters, carry out hole deviation and measure once, so that the hole scattering track is held in support, when exceeding permissible value, must rectify a deviation immediately;
According to weight deviational survey principle, the boring high precision gradient meter that my unit designs voluntarily, can measure the deflection displacement scale of drilling axis exactly, so that judge whether to satisfy quality requirement, when exceeding permissible value, take satisfactory after correcting immediately, this control device is center at the bottom of being in the hole all the time under the weight position-limiting action, lower end of guaranteeing a straight line, the upper end of line is fixed on one can be on cursory of free floating in the basin, principle by the vertical effect of weight, the aperture is cursory can freely find the equilbrium position, at this moment can measure the horizontal movement value of hole scattering exactly;
2) saw kerf cutting
1. facility configuration
Select diamond-wire saw for use;
2. cutting method
Select horizontal drilling cutting transverse joint method, finish the transverse joint cutting of dam, spacing is 1.8~2.2m between the horizontal drilling, boring is distributed on the saw kerf vertical direction, cleaning requirement after the moulding of bonding crack face, construction is carried out from top to bottom successively, because the cutting area is big, situation is difficult for perusal in the hole, selects diamond-wire, in addition strict monitoring on the length of rope, and the rope great talent of should not wearing and tearing changes, and is the same with the drill bit use principle, the use of should ranking, earlier big with external diameter, the back is little with external diameter;
3. cutting parameter is determined
The diamond cut principle is exactly by grinding at a high speed, cutting speed will reach 18m/s~22m/s, cutting fluid-pump amount reaches 70L/mim at least, outside the rock dust tap that is enough to grinding is got off, flushing liquor is under the high-speed cruising of rope drives, and the air-flow of formation drives the water that flows naturally and forms swiftly flowing water route.
The present invention compared with prior art, dam can be in normal operating condition, the saw kerf construction does not influence the dam safety operation, does not damage dam structure, does not destroy dam body transverse joint sealing, cost is low, speed of application is fast, the construction precision height can be widely used in the old dam in Hydraulic and Hydro-Power Engineering field, sick dam strengthening rebuilding construction.
Description of drawings
Fig. 1 is a saw kerf cutting construction process chart of the present invention;
Fig. 2 is boring cutting schematic diagram;
Fig. 3 is the measured hole ramp;
Fig. 4 is a stress release seaming and cutting face phantom drawing;
The specific embodiment
Accompanying drawing is embodiments of the invention
Below in conjunction with accompanying drawing summary of the invention is described further:
With reference to Fig. 1, shown in Figure 2, a kind of large area sawed joint cutting construction method of concrete gravity dam cross joint is made up of boring and cutting two parts, and its job practices is carried out according to the following steps:
1) boring
1. drilling machine configuration
Select all-hydraulic auger for use, adopt thin diamond wall to creep into the technology pore-forming, its vertical drilling bore is selected φ 140mm~φ 150mm, the horizontal drilling bore is selected φ 105mm~φ 110mm, adopt clear water to do cleaning fluid, simplex reciprocating pump supply flushing liquor, auxiliary A font boring tower and other corresponding supporting drilling tool carry out drilling construction;
The drilling tool grating requires: the reamer external diameter is than the big 0.3-0.5mm of drill bit, and the core barrel outside dimension is than the little 3mm of bit size, and drilling rod is selected Φ 50 standard geology tubing for use, and centralizer external diameter and core barrel external diameter equate;
2. drilling parameter is determined: creep into state according to three kinds, creep under the situation at every kind and all should adjust the drilling parameter value, its parameter adjustment scheme sees the following form:
Creep into state The pressure of the drill (kN) Drilling speed (r/min) Pump amount (L/min)
Perforate is crept into ??2~7 ??200~700 ??20~60
Normally creep into ??5~13 ??700~1500 ??25~80
Unusually creep in the hole ??1~5 ??130~450 ??25~70
3. boring and coring
Adopt jump ring to get the core method and carry out taking of core, the boring normal condition, the length of getting core depends on the integrality of core and the length of core barrel, when core is got in decision, stop the supply of flushing liquor earlier, slowly little drilling tool of carrying makes progress, allow jump ring slide from top to down, tightly embrace core, under the powerful torsional interaction of drilling tool slow-speed at bit body inwall with certain taper, twist off core, reintroduce drilling tool, withdraw from core, for the ease of analyzing situation in the hole with opposite program, the core that takes out need be edited and recorded, and conscientiously fills in the borehole log table;
4. the hole deviation of holing is measured
In the whole drilling process, the external diameter of drill bit and drilling tool can wear and tear gradually, needs strict the measurement during use, the use of ranking, by earlier little with internal diameter, external diameter is big, and the back is big with internal diameter, the principle that external diameter is little, whenever creep into 3 meters, carry out hole deviation and measure once, so that the hole scattering track is held in support, when exceeding permissible value, must rectify a deviation immediately;
According to weight deviational survey principle, the borehole accuracy inclinometer, can measure the deflection displacement scale of drilling axis exactly, so that judge whether to satisfy quality requirement, when exceeding permissible value, take satisfactory after correcting immediately, this control device is center at the bottom of being in the hole all the time under the weight position-limiting action, lower end of guaranteeing a straight line, the upper end of line is fixed on one can be on cursory of free floating in the basin, principle by the vertical effect of weight, the aperture is cursory can freely find the equilbrium position, at this moment can measure the horizontal movement value of hole scattering exactly;
2) saw kerf cutting
1. facility configuration
Select diamond-wire saw for use;
2. cutting method
Select horizontal drilling cutting transverse joint method, finish the transverse joint cutting of dam, spacing is 1.8~2.2m between the horizontal drilling, boring is distributed on the saw kerf vertical direction, cleaning requirement after the moulding of bonding crack face, construction is carried out from top to bottom successively, because the cutting area is big, situation is difficult for perusal in the hole, selects diamond-wire, in addition strict monitoring on the length of rope, and the rope great talent of should not wearing and tearing changes, and is the same with the drill bit use principle, the use of should ranking, earlier big with external diameter, the back is little with external diameter;
3. cutting parameter is determined
The diamond cut principle is exactly by grinding at a high speed, cutting speed will reach 18m/s~22m/s, cutting fluid-pump amount reaches 70L/mim at least, outside the rock dust tap that is enough to grinding is got off, flushing liquor is under the high-speed cruising of rope drives, and the air-flow of formation drives the water that flows naturally and forms swiftly flowing water route.
Fig. 3 is measured hole ramp figure, pulley 1 is fixed on the support, vertical line 8 one ends are connected on the bobbin winder bracket 2, vertical line 8 other ends are around pulley 1, and by dop 3 central authorities, deck disk 4 central authorities, water tank 5 central authorities, water tank seat 6 central authorities, locator 9 in the coordinatograph 7 central and vertical holes 11 is connected, connect weight 10 on the locator 9, its water tank seat 6, coordinatograph 7 is placed on the gaging hole body of wall end face, water tank 5 is placed on the water tank seat 6, place free floating in the water tank 5 cursory 12, cursory 12 of free floating is connected with deck disk 4, and dop 3 is set on the deck disk 4.
Figure 4 shows that stress release seaming and cutting face phantom drawing, represented three stress release seam among the figure on the dam body, the filling solar heat protection shrinkage elastomeric material that rises in the seam.
Embodiment
It is one of important composition project of south water to north center line water source project that certain dam is increased, and is positioned at master stream and the about 800m in concourse downstream, tributary, water catching area 95200km 2Key water control project is made up of buildings such as two sides earth and rockfill dam, concrete dam, ship lift, power stations, and preparatory works built up in 1973, normal pool level 157m, crest elevation 162m.Monolith elevation 100m following dam body in riverbed is increased back normal pool level 170m by dam and is built up.It is flood control, water supply, generating and shipping that dam is increased back reservoir main task.Dam is increased back reservoir normal pool level 170m, crest elevation 176.6m, aggregate storage capacity 339.1 hundred million m 3, the safety in control flood large tracts of land farmland, claimed downstream and big or middle city etc., diversion is striden the basin to North China and is supplied water and this basin irrigation water, power station installation 900MW, the navigation structure can pass through 300t level barge.Dam is increased engineering and is gone into operation on September 26th, 2005, plans completion on April 30th, 2010.
The integral construction scheme
Vertical lacing hole at a φ 146mm of dam dam crest upstream sidetracking, the vertical lacing hole with upstream side of horizontal lacing hole that is 2 meters φ 108mm in 11 vertical intervals of dam downstream facade sidetracking intersects 11 of formation and can satisfy the independent cutter unit that cutting power requires, carry out the cutting of horizontal direction vertical plane, transverse joint that interpenetrates of final formation is seen schematic diagram 1, Fig. 2.
3. concrete job practices
(1) boring
1. drilling machine configuration
In order to reach the purpose of cutting wire rope handling, adopt thin diamond wall to creep into the technology pore-forming, be characterized in the efficiency of construction height, precision is good.Take two kinds of different bores that creep into respectively at the horizontal drilling cutting mode, vertical drilling is selected φ 146mm bore, and horizontal drilling is selected φ 108mm bore, adopts clear water to do cleaning fluid, does not add any chemical treatments, ensures to accomplish the environmental protection construction.All-hydraulic auger of DD-750 and LP32 hydraulic pump that construction selects for use happiness Need Inc. to produce are holed, and this body is long-pending little, in light weight, and output torque is big, and the vertical shaft revolution steadily is equipped with the technical requirements that auxiliary equipment and facility are enough to satisfy construction.According to the technical requirements of boring bore and diamond drilling, select the simplex reciprocating pump supply flushing liquor of BW150/30 type for use, auxiliary A font boring tower and other corresponding supporting drilling tool carry out drilling construction.
For guaranteeing drilling quality, drilling tool is joined the strict design of grade size.The one, guarantee that drilling tool De Hui Nei the hole changes steadily, the 2nd, satisfy the speed that flushing liquor passes in and out inside and outside drilling tool, be enough to the break flour that the drill bit grinding is got off is carried outside outside the hole.
The drilling tool grating requires: the reamer external diameter is than the big 0.3-0.5mm of drill bit, and the core barrel outside dimension is than the little 3mm of bit size, and drilling rod is selected Φ 50 standard geology tubing for use, and centralizer external diameter and core barrel external diameter equate.
2. drilling parameter is determined
Another key factor of drilling efficiency and drilling quality depends on the choose reasonable of drilling parameter, is important steps in the work progress to the reasonable coupling control of the pressure of the drill, drilling speed and three kinds of parameters of pump amount.Creep into state according to three kinds, creep into situation drilling parameter value, see the following form at every kind:
Creep into state The pressure of the drill (kN) Drilling speed (r/min) Pump amount (L/min)
Perforate is crept into ??5 ??400 ??45
Normally creep into ??10 ??1000 ??70
Unusually creep in the hole ??3 ??250 ??45
3. boring and coring
This engineering design employing jump ring is got the core method and is carried out taking of core.The boring normal condition, the length of getting core depends on the integrality of core and the length of core barrel.When core is got in decision, stop the supply of flushing liquor earlier, upwards slowly little drilling tool of carrying, allow jump ring slide from top to down, tightly embrace core, under the powerful torsional interaction of drilling tool slow-speed at bit body inwall with certain taper, twist off core, reintroduce drilling tool, withdraw from core with opposite program.For the ease of analyzing situation in the hole, the core of taking-up need be edited and recorded, and conscientiously fills in " borehole log table ".
4. the hole deviation of holing is measured
In the whole drilling process, the external diameter of drill bit and drilling tool can wear and tear gradually, needs strict the measurement during use, the use of ranking, and by earlier little with internal diameter, external diameter is big, and the back is big with internal diameter, the principle that external diameter is little.Whenever creep into 3 meters, carry out hole deviation and measure once,, when exceeding permissible value, must rectify a deviation immediately so that the hole scattering track is held in support.
According to weight deviational survey principle, the boring high precision gradient meter that my unit designs voluntarily can be measured the deflection displacement scale of drilling axis exactly, so that judge whether to satisfy quality requirement, when exceeding permissible value, takes satisfactory after correcting immediately.This control device is center at the bottom of being in the hole all the time under the weight position-limiting action, lower end of guaranteeing a straight line, and the upper end of line is fixed on one can see schematic diagram 3 on cursory of 5 li free floatings of water tank.
By the principle of weight 10 vertical effects, the aperture is cursory can freely find the equilbrium position, at this moment can measure the horizontal movement value of hole scattering exactly.
(2) saw kerf cutting
1. facility configuration
Mainly select for use Japanese Kang Saike company to produce the WS-15 type diamond-wire saw that DSM-10A type diamond-wire saw and happiness Need Inc. produce, its powerful can satisfy the demand of large tracts of land cutting power.
2. cutting method
According to the result of field trial, select horizontal drilling cutting transverse joint worker method, finish the transverse joint cutting of dam.Spacing is 2m between the horizontal drilling, and boring is distributed on the saw kerf vertical direction, the cleaning requirement after the moulding of bonding crack face, and construction is carried out from top to bottom successively.Because the cutting area is big, situation is difficult for perusal in the hole, select the high-intensity high efficiency diamond-wire of high-quality, in addition strict monitoring on the length of rope, and the rope great talent of should not wearing and tearing changes, and is the same with the drill bit use principle, the use of should ranking, earlier big with external diameter, the back is little with external diameter.
3. cutting parameter is determined
The diamond cut principle is exactly by grinding at a high speed, cutting speed will reach more than the 18m/s, but for safety, speed should be not excessive yet, should be controlled in the 22m/s, cutting fluid-pump amount should reach more than the 70L/mim, outside the rock dust tap that is enough to grinding is got off, flushing liquor is under the high-speed cruising of rope drives, and the air-flow of formation drives the water that flows naturally and forms swiftly flowing water route.
Transverse joint that cutting is finished and weight hole adopt filling pitch flax silk or polysulfide sealant to handle, and the filling degree of depth is identical with depth of cut.

Claims (2)

1, a kind of large area sawed joint cutting construction method of concrete gravity dam cross joint is made up of boring and cutting two parts, and its job practices is carried out according to the following steps:
1) boring
1. drilling machine configuration
Select all-hydraulic auger for use, adopt thin diamond wall to creep into the technology pore-forming, its vertical drilling bore is selected φ 140mm~φ 150mm, the horizontal drilling bore is selected φ 105mm~φ 110mm, adopt clear water to do cleaning fluid, simplex reciprocating pump supply flushing liquor, auxiliary A font boring tower and other corresponding supporting drilling tool carry out drilling construction;
The drilling tool grating requires: the reamer external diameter is than the big 0.3-0.5mm of drill bit, and the core barrel outside dimension is than the little 3mm of bit size, and drilling rod is selected Φ 50 standard geology tubing for use, and centralizer external diameter and core barrel external diameter equate;
2. drilling parameter is determined: creep into state according to three kinds, creep under the situation at every kind and all should adjust the drilling parameter value, its parameter adjustment scheme is: the pressure of the drill that perforate is crept into is: 2~7kN, drilling speed 200~700r/min, pump amount 20~60L/min; The pressure of the drill that normally creeps into is: 5~13kN, drilling speed 700~1500r/min, pump amount 25~80L/min; Unusually the pressure of the drill that creeps in the hole is: 1~5kN, drilling speed 130~450r/min, pump amount 25~70L/min;
3. boring and coring adopts jump ring to get the core method to carry out taking of core, the boring normal condition, the length of getting core depends on the integrality of core and the length of core barrel, when core is got in decision, stop the supply of flushing liquor earlier, slowly little drilling tool of carrying makes progress, allow jump ring slide from top to down, tightly embrace core, under the powerful torsional interaction of drilling tool slow-speed at bit body inwall with certain taper, twist off core, reintroduce drilling tool, withdraw from core, for the ease of analyzing situation in the hole with opposite program, the core that takes out need be edited and recorded, and conscientiously fills in the borehole log table;
4. the hole deviation of holing is measured
In the whole drilling process, the external diameter of drill bit and drilling tool can wear and tear gradually, needs strict the measurement during use, the use of ranking, by earlier little with internal diameter, external diameter is big, and the back is big with internal diameter, the principle that external diameter is little, whenever creep into 3 meters, carry out hole deviation and measure once, so that the hole scattering track is held in support, when exceeding permissible value, must rectify a deviation immediately;
According to weight deviational survey principle, the measured hole ramp, can measure the deflection displacement scale of drilling axis exactly, so that judge whether to satisfy quality requirement, when exceeding permissible value, take satisfactory after correcting immediately, this control device is center at the bottom of being in the hole all the time under the weight position-limiting action, lower end of guaranteeing a straight line, the upper end of line is fixed on one can be on cursory of free floating in the basin, principle by the vertical effect of weight, the aperture is cursory can freely find the equilbrium position, at this moment can measure the horizontal movement value of hole scattering exactly.
2) saw kerf cutting
1. diamond-wire saw is selected in facility configuration for use;
2. cutting method:
Select horizontal drilling cutting transverse joint method, finish the transverse joint cutting of dam, spacing is 1.8~2.2m between the horizontal drilling, boring is distributed on the saw kerf vertical direction, cleaning requirement after the moulding of bonding crack face, construction is carried out from top to bottom successively, because the cutting area is big, situation is difficult for perusal in the hole, selects diamond-wire, in addition strict monitoring on the length of rope, and the rope great talent of should not wearing and tearing changes, and is the same with the drill bit use principle, the use of should ranking, earlier big with external diameter, the back is little with external diameter;
3. cutting parameter is determined
The diamond cut principle is exactly by grinding at a high speed, cutting speed will reach 18m/s~22m/s, cutting fluid-pump amount reaches 70L/mim at least, outside the rock dust tap that is enough to grinding is got off, flushing liquor is under the high-speed cruising of rope drives, and the air-flow of formation drives the water that flows naturally and forms swiftly flowing water route.
2, measured hole ramp in the described large area sawed joint cutting construction method of concrete gravity dam cross joint of a kind of claim 1, it is characterized in that the measured hole ramp comprises that a pulley (1) is fixed on the support, vertical line (8) one ends are connected on the bobbin winder bracket (2), vertical line (8) other end is walked around pulley (1), and by dop (3), deck disk (4), water tank (5), water tank seat (6), locator (9) in coordinatograph (7) and vertical hole (11) is connected, locator (9) is gone up and is connected weight (10), its water tank seat (6), coordinatograph (7) is placed on the gaging hole body of wall end face, water tank (5) is placed on the water tank seat (6), place cursory (12) of free floating in the water tank (5), cursory (12) of free floating are connected with deck disk (4), and dop (3) is set on the deck disk (4).
CNB2008100174173A 2008-01-29 2008-01-29 Large area sawed joint cutting construction method of concrete gravity dam cross joint Active CN100572676C (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102003138A (en) * 2010-11-12 2011-04-06 潘鸿宝 Construction method for carrying out high-precision vertical drilling on concrete and drilling device thereof
CN102226698A (en) * 2011-03-30 2011-10-26 中国水利水电第七工程局成都水电建设工程有限公司 Weight-type inclinometer
CN102277981A (en) * 2011-05-25 2011-12-14 潘鸿宝 Underwater drilling and cutting construction method of reinforced concrete structure
CN103317603A (en) * 2012-03-18 2013-09-25 赵兵 Method for applying wire saw to underground rock engineering through in-hole anchor guiders
CN105089012A (en) * 2015-07-13 2015-11-25 中国电建集团贵阳勘测设计研究院有限公司 Method for building gravity dam on deep and thick cover layer and spandrel concrete gravity dam structure
CN105604540A (en) * 2016-03-24 2016-05-25 中国葛洲坝集团勘测设计有限公司 Suspension type counter weight clinometer and measurement method
CN106284187A (en) * 2016-08-29 2017-01-04 长江勘测规划设计研究有限责任公司 Face Slab of Concrete of Rock-fill Dam destroys the quick method for dismounting in district

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102003138A (en) * 2010-11-12 2011-04-06 潘鸿宝 Construction method for carrying out high-precision vertical drilling on concrete and drilling device thereof
CN102226698A (en) * 2011-03-30 2011-10-26 中国水利水电第七工程局成都水电建设工程有限公司 Weight-type inclinometer
CN102277981A (en) * 2011-05-25 2011-12-14 潘鸿宝 Underwater drilling and cutting construction method of reinforced concrete structure
CN102277981B (en) * 2011-05-25 2013-03-20 潘鸿宝 Underwater drilling and cutting construction method of reinforced concrete structure
CN103317603A (en) * 2012-03-18 2013-09-25 赵兵 Method for applying wire saw to underground rock engineering through in-hole anchor guiders
CN105089012A (en) * 2015-07-13 2015-11-25 中国电建集团贵阳勘测设计研究院有限公司 Method for building gravity dam on deep and thick cover layer and spandrel concrete gravity dam structure
CN105604540A (en) * 2016-03-24 2016-05-25 中国葛洲坝集团勘测设计有限公司 Suspension type counter weight clinometer and measurement method
CN105604540B (en) * 2016-03-24 2018-05-08 中国葛洲坝集团勘测设计有限公司 A kind of floated weight inclinometer and measuring method
CN106284187A (en) * 2016-08-29 2017-01-04 长江勘测规划设计研究有限责任公司 Face Slab of Concrete of Rock-fill Dam destroys the quick method for dismounting in district

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