CN102230357A - Method for forming ultra-deep anchor hole in loose accumulation body and breakage rock layer - Google Patents
Method for forming ultra-deep anchor hole in loose accumulation body and breakage rock layer Download PDFInfo
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- CN102230357A CN102230357A CN2011101432846A CN201110143284A CN102230357A CN 102230357 A CN102230357 A CN 102230357A CN 2011101432846 A CN2011101432846 A CN 2011101432846A CN 201110143284 A CN201110143284 A CN 201110143284A CN 102230357 A CN102230357 A CN 102230357A
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Abstract
The invention relates to a method for forming an ultra-deep anchor hole in a loose accumulation body and a breakage rock layer. The method comprises the following steps of: 1, selecting hole forming equipment; 2, preparing before drilling; 3, guiding a hole; and 4, drilling to form the hole. The method has the advantages that: difficulty in drilling to form the hole under various complicated conditions is overcome, namely 1, a treatment method after drilling stuck; 2, a treatment method in case of boulder; and 3, an operation method under the condition of abundant underground water. According to practical conditions in projects such as treatment for a third landslide of Yangchun New Steel Co., Ltd, a manual unloading slot of Yangchun New Steel Co., Ltd and deep foundation pit bracing of a dual-roll-over system, the average elapsed time of each drilling hole per meter is shortened by about 0.28 hour, the average loss of each drilling hole per meter is reduced by 20 yuan, and the average consumed working hour of each drilling hole per meter is reduced by about 2.06 hours.
Description
Technical field
The present invention relates to field of engineering technology, a kind of specifically super dark anchor cable hole forming method in loose accumulation body and kata-rocks soil layer.
Background technology
The major influence factors of drilling and forming hole efficient is: the physico mechanical characteristic on depth of pore forming, stratum, underground water.Main difficult point in the drilling and forming hole process is: drilling rod passes the interface of two kinds of Different Strata, there are bigger difference in the physico-mechanical properties of Different Strata, geological characteristics, drilling rod is entered into the process on another stratum by a kind of stratum, drilling rod the pressure of the drill, feed blast, all can take place to change in various degree with index such as pipe bit pressure, if control and bad accidents such as bit freezing, drill bit fracture will take place, have a strong impact on drilling efficiency.This just requires in work progress, can judge the formation properties at drill bit place according to meter reading accurately, and adjustment feeds blast, pump pressure according to actual conditions, guarantees that drilling rod normally creeps into.
Summary of the invention
The objective of the invention is to develop and a kind ofly increase work efficiency, reduce cost, be not limited to landslide engineering, the super dark anchor cable hole forming method in loose accumulation body and kata-rocks soil layer that can both extensive use in engineerings such as foundation ditch, earth anchor, tunnel.
The super dark anchor cable hole forming method of the present invention in loose accumulation body and kata-rocks soil layer, its step is as follows:
1. pore-forming equipment is selected and prepared: before formal construction, the base area is surveyed the situation of creeping into of report, designing requirement, test hole and is selected suitable pneumatics power, rig and supporting drilling tool thereof;
2. first bore hole guide hole up to returning the little or hole of collapsing of air quantity, is used instead with pipe bit and is advanced technology;
3. in the drilling process, the air pressure at expulsion will be stablized, and feeds blast 0.83～0.95MPa, drilling tool the pressure of the drill 2.5～3.5MPa, pump pressure control 3.5～5.0 MPa in soil layer, crushed stone soil layer;
Feed blast when 4. running into obstruction such as boulder and will reduce by 0.3～0.5 MPa, pump pressure reduces by 0.1～0.3 MPa, prevents that drill bit is damaged under suppressing;
5. rate of penetration is difficult for the too fast 3.0m/t of being controlled to be during rich groundwater, wants when closing wind slowly, prevent that impactor from sucking silt particle;
Answer high wind (blast is heightened 1.5MPa) deslagging when 6. whenever creeping into 0.3～0.5m once; For the situation that wet soil be difficult for to be discharged, about 0.2m left and right sides deslagging is once, and is unobstructed in the retaining hole, during deslagging with drilling tool lifting from aperture 50cm, forbid that in drilling process (with pipe time) upwards promotes drilling tool or counter-rotating repeatedly, easy stuck drilling tool or cause drilling rod to change liter;
7. carry when boring, off-balance bit can not return if blocked by stone, should promote blast work by the eccentric drilling device short time after again examination carry, when off-balance bit is wrapped can not return the time by earth, should promote blast 1～2 circle that creeps into, reverses and promote once more;
8. repeat 3.～7. step, creep into to the design hole depth.
The advantage of the super dark anchor cable hole forming method of the present invention in loose accumulation body and kata-rocks soil layer is: solved the difficult problem at drilling and forming hole under the various complex conditions: the processing method behind (1) bit freezing; (2) run into the boulder processing method; (3) method of operating under the rich groundwater condition.According to practice situation in spring new iron and steel 3# landslide control engineering, spring engineering such as new iron and steel manual discharging groove and two overturning systems deep foundation pit support, after this technology adopts, average minimizing service time of each every linear meter(lin.m.) of holing is about 0.28 hour, each 20 yuan of every linear meter(lin.m.) loss decreased average of holing, each every linear meter(lin.m.) mean consumption less 2.06 man-hour in man-hour of holing.
The specific embodiment
Embodiment one
Spring, case was put into practice in new iron and steel 3# landslide control engineering MSP7P8-22 hole
The super dark anchor cable hole forming method of the present invention in loose accumulation body and kata-rocks soil layer, its step is as follows:
The base area is surveyed the situation of creeping into of report, designing requirement, test hole and is selected 21.7m
3The empty forcing press of/min, YG-60 jumbolter and supporting drilling tool thereof.
The preceding preparation of spudding in: (1) air compressor machine is arranged in smooth, safe position as far as possible, and can satisfy the construction requirement of each platform; (2) air supply duct adopts zinc-plated aluminum pipe; (3) before the perforate rig is debugged the location, about 6cm is risen in the pylon front, be adjusted to the angle of requirement; (4) whether the hole pin wearing and tearing at inspection impactor lower interface place are serious, and whether little perpendicular pin spring return performance is good, and whether impactor is normal, and whether the lower interface internal spline damages; (5) check the whether heavy wear of drill bit spline, firm welding is sold in hole on the off-balance bit drilling tool whether, whether the drill bit return is smooth, whether the guider wearing and tearing are serious, if seriously will be with the sander polishing to consistent with the radian of contact surface in the shoe, otherwise in drilling process, can destroy shoe, cause bit freezing; (6) check whether serious wear of shoe,, in time change if can not meet the demands.Check whether guider, drill bit and shoe be supporting.
Guide hole: first bore hole pore-forming, up to returning the little or hole of collapsing of air quantity, use instead with pipe bit and advance technology (sleeve pipe will be screwed into the position).
The air pressure at expulsion is stabilized in 1.4MPa in the drilling process, feeds in soil layer, crushed stone soil layer that blast is controlled at about 0.85Mpa, drilling tool the pressure of the drill is controlled at 2.0～3.0Mpa, moment of torsion pressure is controlled at 3～7MPa.Feed ventilation pressure loss when [0019] running into obstruction such as boulder and be low to moderate about 0.80 MPa, pump pressure reduces (pump pressure reduces by 0.1～0.3 MPa) slightly, prevents that drill bit is damaged under suppressing.
Answer high wind (blast is brought up to 1.5MPa) deslagging when whenever creeping into 0.3～0.5m once, the situation that is difficult for discharge for wet soil, about 0.2m left and right sides deslagging once, unobstructed in the retaining hole, during deslagging with drilling tool lifting from aperture 50cm, forbid that in drilling process (with pipe time) upwards promotes drilling tool or counter-rotating repeatedly, easy stuck drilling tool or cause drilling rod to change rising.
Rate of penetration is difficult for the too fast 3.0m/t of being controlled to be during rich groundwater, wants when closing wind slowly, prevents that impactor from sucking silt particle;
When drilling rod bit freezing drilling tool can not rotate, halt as far as possible, prevent that drill bit is stuck.
Carry when boring, off-balance bit can not return if blocked by stone, should promote blast to 1.0MPa, allow the eccentric drilling device short time work after again examination carry, when off-balance bit is protected can not return the time by earth, should promote blast to 1.2MPa 1～2 circle that creeps into, reverses and promote once more.
Embodiment two
Spring, case was put into practice in new iron and steel 3# landslide control engineering MSP5P6-25 hole
The super dark anchor cable hole forming method of the present invention in loose accumulation body and kata-rocks soil layer, its step is as follows:
The base area is surveyed the situation of creeping into of report, designing requirement, test hole and is selected 21.7m
3The empty forcing press of/min, YG-60 jumbolter and supporting drilling tool thereof.
The preceding preparation of spudding in: (1) air compressor machine is arranged in smooth, safe position as far as possible, and can satisfy the construction requirement of each platform; (2) air supply duct adopts zinc-plated aluminum pipe; (3) before the perforate rig is debugged the location, about 6cm is risen in the pylon front, be adjusted to the angle of requirement; (4) whether the hole pin wearing and tearing at inspection impactor lower interface place are serious, and whether little perpendicular pin spring return performance is good, and whether impactor is normal, and whether the lower interface internal spline damages; (5) check the whether heavy wear of drill bit spline, firm welding is sold in hole on the off-balance bit drilling tool whether, whether the drill bit return is smooth, whether the guider wearing and tearing are serious, if seriously will be with the sander polishing to consistent with the radian of contact surface in the shoe, otherwise in drilling process, can destroy shoe, cause bit freezing; (6) check whether serious wear of shoe,, in time change if can not meet the demands.Check whether guider, drill bit and shoe be supporting.
Guide hole: use and overlap the drill bit identical size of external diameter of pipe or big slightly and supporting impactor bore hole and creep into, to return air quantity little or when collapsing the hole (hard as the stratum, can promote repeatedly, creep into bored hard formation as far as possible after) use instead with pipe bit.
The air pressure at expulsion is stabilized in 1.4MPa in the drilling process, feeds in soil layer, crushed stone soil layer that blast is controlled at about 0.85Mpa, drilling tool the pressure of the drill is controlled at 1.5～2.5Mpa, moment of torsion pressure is controlled at 3～7MPa.Feed ventilation pressure loss when [0019] running into obstruction such as boulder and be low to moderate about 0.75 MPa, pump pressure reduces (pump pressure reduces by 0.1～0.3 MPa) slightly, prevents that drill bit is damaged under suppressing.
Answer high wind (blast is brought up to 1.5MPa) deslagging when whenever creeping into 0.3～0.5m once, the situation that is difficult for discharge for wet soil, about 0.2m left and right sides deslagging once, unobstructed in the retaining hole, during deslagging with drilling tool lifting from aperture 50cm, forbid that in drilling process (with pipe time) upwards promotes drilling tool or counter-rotating repeatedly, easy stuck drilling tool or cause drilling rod to change rising.
Rate of penetration is difficult for the too fast 3.0m/t of being controlled to be during rich groundwater, wants when closing wind slowly, prevents that impactor from sucking silt particle;
When drilling rod bit freezing drilling tool can not rotate, halt as far as possible, prevent that drill bit is stuck.
Carry when boring, off-balance bit can not return if blocked by stone, should promote blast to 1.0MPa, allow the eccentric drilling device short time work after again examination carry, when off-balance bit is protected can not return the time by earth, should promote blast to 1.2MPa 1～2 circle that creeps into, reverses and promote once more.
The invention is not restricted to the foregoing description, according to the requirement of different geology, parameter, can form a plurality of embodiment, and all fall within the scope of protection of present invention.
Claims (1)
1. super dark anchor cable hole forming method in loose accumulation body and kata-rocks soil layer, it is characterized in that: its step is as follows:
1. pore-forming equipment is selected and prepared: before formal construction, the base area is surveyed the situation of creeping into of report, designing requirement, test hole and is selected suitable pneumatics power, rig and supporting drilling tool thereof;
2. first bore hole guide hole up to returning the little or hole of collapsing of air quantity, is used instead with pipe bit and is advanced technology;
3. in the drilling process, the air pressure at expulsion will be stablized, and feeds blast 0.83～0.95MPa, drilling tool the pressure of the drill 2.5～3.5MPa, pump pressure control 3.5～5.0 MPa;
Feed blast when 4. running into obstruction such as boulder and will reduce by 0.3～0.5 MPa, pump pressure reduces by 0.1～0.3 MPa, prevents that drill bit is damaged under suppressing;
5. rate of penetration is difficult for the too fast 3.0m/t of being controlled to be during rich groundwater, wants when closing wind slowly, prevent that impactor from sucking silt particle;
Answer the high wind deslagging when 6. whenever creeping into 0.3～0.5m once, described high wind is meant that blast heightens 1.5MPa; For the situation that wet soil be difficult for to be discharged, about 0.2m left and right sides deslagging is once, and is unobstructed in the retaining hole, during deslagging with drilling tool lifting from aperture 50cm, upwards promote drilling tool or counter-rotating repeatedly when forbidding in drilling process, easy stuck drilling tool or cause drilling rod to change liter with pipe;
7. carry when boring, off-balance bit can not return if blocked by stone, should promote blast work by the eccentric drilling device short time after again examination carry, when off-balance bit is wrapped can not return the time by earth, should promote blast 1～2 circle that creeps into, reverses and promote once more;
8. repeat 3.～7. step, creep into to the design hole depth.
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Cited By (10)
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| CN102518442A (en) * | 2011-12-14 | 2012-06-27 | 中铁十二局集团第二工程有限公司 | Method for processing isolated stone groups in shield excavation karren section |
| CN102535462A (en) * | 2012-03-16 | 2012-07-04 | 广州中煤江南基础工程公司 | Method for constructing anchor cable on sand layer |
| CN102704909A (en) * | 2012-06-28 | 2012-10-03 | 中国水利水电第七工程局成都水电建设工程有限公司 | Hole-deflection control construction method for deep hole drilling |
| CN104895573A (en) * | 2015-04-20 | 2015-09-09 | 中铁二十五局集团第一工程有限公司 | Tunnel loose block fracture zone building method |
| CN105952374A (en) * | 2016-05-06 | 2016-09-21 | 中国水利水电第十工程局有限公司 | Complex soil layer anchor cable hole drill pore-forming method |
| CN107503681A (en) * | 2017-09-21 | 2017-12-22 | 中建五局土木工程有限公司 | Karst area is grown up anchor cable forming hole method |
| CN109372520A (en) * | 2018-11-08 | 2019-02-22 | 大成工程建设集团有限公司 | One kind passing through Debris Flow Deposition area tunnel support structure and its construction method |
| CN113073968A (en) * | 2021-04-14 | 2021-07-06 | 中煤科工集团重庆研究院有限公司 | Self-adaptive adjustment method and system for drilling parameters |
| CN118167195A (en) * | 2024-05-08 | 2024-06-11 | 中石化西南石油工程有限公司 | Drilling method for entering and penetrating complex gas reservoir |
| CN118167195B (en) * | 2024-05-08 | 2024-07-16 | 中石化西南石油工程有限公司 | Drilling method for entering and penetrating complex gas reservoir |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518442A (en) * | 2011-12-14 | 2012-06-27 | 中铁十二局集团第二工程有限公司 | Method for processing isolated stone groups in shield excavation karren section |
| CN102518442B (en) * | 2011-12-14 | 2014-04-23 | 中铁十二局集团第二工程有限公司 | Method for processing isolated stone groups in shield excavation karren section |
| CN102535462A (en) * | 2012-03-16 | 2012-07-04 | 广州中煤江南基础工程公司 | Method for constructing anchor cable on sand layer |
| CN102704909A (en) * | 2012-06-28 | 2012-10-03 | 中国水利水电第七工程局成都水电建设工程有限公司 | Hole-deflection control construction method for deep hole drilling |
| CN102704909B (en) * | 2012-06-28 | 2015-03-11 | 中国水利水电第七工程局成都水电建设工程有限公司 | Hole-deflection control construction method for deep hole drilling |
| CN104895573A (en) * | 2015-04-20 | 2015-09-09 | 中铁二十五局集团第一工程有限公司 | Tunnel loose block fracture zone building method |
| CN105952374A (en) * | 2016-05-06 | 2016-09-21 | 中国水利水电第十工程局有限公司 | Complex soil layer anchor cable hole drill pore-forming method |
| CN105952374B (en) * | 2016-05-06 | 2019-02-05 | 中国水利水电第十一工程局有限公司 | A kind of complex random systems prestressed anchor cable borehole forming hole method |
| CN107503681A (en) * | 2017-09-21 | 2017-12-22 | 中建五局土木工程有限公司 | Karst area is grown up anchor cable forming hole method |
| CN109372520A (en) * | 2018-11-08 | 2019-02-22 | 大成工程建设集团有限公司 | One kind passing through Debris Flow Deposition area tunnel support structure and its construction method |
| CN113073968A (en) * | 2021-04-14 | 2021-07-06 | 中煤科工集团重庆研究院有限公司 | Self-adaptive adjustment method and system for drilling parameters |
| CN118167195A (en) * | 2024-05-08 | 2024-06-11 | 中石化西南石油工程有限公司 | Drilling method for entering and penetrating complex gas reservoir |
| CN118167195B (en) * | 2024-05-08 | 2024-07-16 | 中石化西南石油工程有限公司 | Drilling method for entering and penetrating complex gas reservoir |
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Application publication date: 20111102 |