CN102561977A - High-pressure high-flow water burst hole drilling safety system, mounting process thereof and service process - Google Patents
High-pressure high-flow water burst hole drilling safety system, mounting process thereof and service process Download PDFInfo
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- CN102561977A CN102561977A CN2012100189315A CN201210018931A CN102561977A CN 102561977 A CN102561977 A CN 102561977A CN 2012100189315 A CN2012100189315 A CN 2012100189315A CN 201210018931 A CN201210018931 A CN 201210018931A CN 102561977 A CN102561977 A CN 102561977A
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- 238000005553 drilling Methods 0.000 title claims abstract description 91
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000010276 construction Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 37
- 241000239290 Araneae Species 0.000 claims description 23
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000010079 rubber tapping Methods 0.000 claims description 6
- 238000003556 assay Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- 239000004568 cement Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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Abstract
The invention discloses a high-pressure high-flow water burst hole drilling safety system, mounting process thereof and service process. After a high-pressure high-flow water burst aquifer or a water-bearing structure is discovered by drilled holes, water burst can be controlled in time, and outward jetting of a drill stem is prevented, so that construction safety is guaranteed. The high-pressure high-flow water burst hole drilling safety system consists of a high-pressure high-flow water burst control system, drill stem outward jetting prevention safety system and a water pressure and water quantity measuring system. Opening degree of a valve body of a water controlling valve 17 is controlled so as to achieve the purpose of controlling water, and outward jetting of the drill stem is prevented by means of increasing gripping force between slips and the drill stem and by the aid of blockage of a shell 13. The hole drilling water pressure and water quantity measuring system consists of a pressure gauge 5 and a water drainage pipeline 16. Water pressure can be directly measured by the pressure gauge 5 after the hole drilling water burst is controlled, and flow can be measured by a flowmeter at an outlet of the water drainage pipeline.
Description
Technical field
The present invention relates to a kind of high-pressure high-flow water burst boring security system and mounting process thereof, use technology, belong to water damage prevention and cure project fields such as mine, traffic, water conservancy and hydropower.
Background technology
At present in the down-hole, mine, the high pressure Karst Tunnel, after spies such as Hydraulic and Hydro-Power Engineering discharged water or grouting for water blocking boring discloses the high-pressure high-flow aquifer, high-pressure high-flow boring water burst can appear.High artesian head pressure in the aquifer provides bigger active force for the interior drilling tool of boring, causes when dismounting drilling rod, and active force makes drilling tool penetrate boring fast, causes drilling rod to penetrate outward, causes security threat for constructor, construction equipment and construction environment; Can be directly injected on operating personnel and the rig after a large amount of in addition water gushing out with high pressure ejection boring; Make operating personnel handle water burst and to have influence on personnel, device security near boring; Water burst is within a certain period of time if can not get control; Meeting supply and drain water system build-up of pressure, even the phenomenon that getting working face or construction site occur flooding because water burst can't be discharged smoothly cause than large economy and lose.Therefore design a kind of high-pressure high-flow water burst boring security system, in order to disclosing geopressured aquifer in boring, big flow water burst appears and after, can accomplish artificially to control water burst, prevent that drilling rod from penetrating outward, to guarantee the safety of constructor, construction equipment and construction site.
Summary of the invention
The objective of the invention is in order to solve the safety problem in the above-mentioned drilling construction; A kind of high-pressure high-flow water burst boring security system and mounting process thereof, use technology are provided; After can be implemented in boring exposure high-pressure high-flow water burst aquifer or containing permeable structure; Can in time control water burst and prevent that drilling rod from penetrating outward, thereby guarantee construction safety.
For realizing above-mentioned purpose, the present invention adopts following technical proposals:
A kind of high-pressure high-flow water burst boring security system, it comprises the sealing sleeve pipe, and the sealing sleeve pipe is provided with pressure meter, and an end of sealing sleeve pipe links to each other with the pipeline with sluicing chamber through high pressure sluice valve, and the other end of pipeline links to each other with preventing the security system that drilling rod is penetrated outward; The side of pipeline connects discharge pipe line through the water-control valve door; The said security system that prevents that drilling rod from penetrating outward comprises shell; Shell has the column cavity that adapts with drilling rod; Shell is provided with slips, the slip spider that is used to hold tightly drilling rod and the bolt of screwing, and the outside of shell is equipped with seal rubber sleeve, and seal rubber sleeve is rotary with outward installs the gum cover pressure cap.
Said sealing outside of sleeve is provided with the principal rod sheet.
Have groove in the said shell, slips that cooperatively interacts and slip spider are installed in the groove, and the bolt of screwing is arranged on the shell and with slip spider and contacts.
The mounting process of above-mentioned high-pressure high-flow water burst boring security system, installation steps are:
Step 1: behind the construction down-hole drilling, in boring, be lowered to the sealing sleeve pipe, the sealing sleeve pipe carried out sealing, and connect pressure meter;
Step 2: on the sealing sleeve pipe, connect tapping pipe through high pressure sluice valve, the water-control valve door that passes through of tapping pipe one side connects discharge pipe line; And guarantee in the fitting operation that high pressure sluice valve and water-control valve door are in full open position;
Step 3: on shell, install earlier slips, slip spider and the bolt of screwing, back seal rubber sleeve and gum cover pressure cap are installed then, at last this security system that prevents that drilling rod from penetrating outward is installed in the other end of tapping pipe;
Step 4: effect is installed in inspection, through the degree of depth that bolt screw-in screw is screwed in adjusting, regulates the gap between slips and the slip spider; Through regulating the compressing degree that the gum cover pressure cap is regulated seal rubber sleeve, to guarantee that drilling rod can pass smoothly; Above-mentioned security system is crept into installing and after the assay was approved, can in boring, being lowered to drilling rod through security system.
The use technology of above-mentioned high-pressure high-flow water burst boring security system comprises the steps:
Step 1: prevent the technological operation that drilling rod is penetrated outward: boring in drilling construction, run into the high-pressure high-flow water burst after, earlier clamp drilling rod with chuck of rig temporarily; Prevent that drilling rod from continuing outer moving, then rapidly through the bolt of screwing, compressing slip spider and slips; Make slips tooth portion compress into drilling rod; Reach the purpose of holding drilling rod tightly, the slip spider of holding drilling rod simultaneously tightly bears the buffer brake of shell, unclamps to prevent chuck of rig that drilling rod outwards moves behind the drilling rod;
Step 2: the control of boring water gushing out with high pressure: above-mentioned steps 1 is slowly closed high pressure sluice valve after preventing that security system that drilling rod is penetrated from playing effect outward, touches the position that drilling rod is obstructed and can't continues to cut out to valve body, with minimizing water burst section; The gum cover pressure cap of screwing simultaneously, the compression seal gum cover to reduce the gap between seal rubber sleeve and the drilling rod, prevents that water burst sprays along drilling rod in the hole; Along with the increase of the pressure of screwing, seal rubber sleeve and drilling rod compress fully, and can bear certain hydraulic pressure and the water burst phenomenon can not occur.
Water burst can only be discharged from through discharge pipe line from the sluicing chamber through the water-control valve door after above-mentioned steps is accomplished in the hole; When not needing draining, close the water-control valve door, water burst is closed in the boring fully; Regulate the flow of boring water burst through the folding degree of regulating water-control valve family of power and influence body, can reach the purpose of keyhole water burst.
The high pressure sluice valve that the present invention relates to use, water-control valve door, flange and the specifications and models that connect two side flanges of water-control valve door require to be complementary with the head pressure that discloses the aquifer, and generally its withstand voltage must not be lower than 1.5 times of the high water head pressure in aquifer.And the nominal diameter of requirement and sealing sleeve pipe is consistent, installs and the safe mass requirement to satisfy.Gap between the internal diameter of the internal diameter of seal rubber sleeve, gum cover pressure cap and the three groups of slips will be complementary according to the diameter of the used drilling rod of construction drill, must not hinder normal rotation of drilling rod and string moving.Wherein seal rubber sleeve, gum cover pressure cap can be installed on the shell after the high-pressure high-flow water burst appears in boring and the gum cover pressure cap of screwing again, and seal rubber sleeve is closely contacted with drilling rod, reach the purpose of seal rubber sleeve sealing.When closing water-control valve fully behind the door, can be through the pressure of water in the pressure meter observation boring.After the water-control valve door is opened fully, can be through the flow of flow meter water burst in the measured hole of discharge pipe line exit.
The invention has the beneficial effects as follows: can reach to be implemented in and prevent under the high-pressure high-flow water burst condition that drilling rod from penetrating and the effect of the water burst ejection of holing outward, and accomplish controlled to bore flooding quantity.Site operation personnel, construction equipment and safety of environment have been guaranteed.Also can satisfy under the water burst condition,, reach the purpose of drilling rod sleeve pipe in the smooth proposition hole through the coordinative role of slips and chuck of rig.
Description of drawings
Fig. 1 is a kind of security system structure chart of penetrating outside the drilling rod of under high-pressure high-flow water burst condition, preventing.
Wherein, 1 sealing cement, 2 principal rod sheets, 3 sealing sleeve pipes, 4 crags, 5 pressure meters; 6 aperture flanges, 7 high pressure sluice valves, 8 flanges, 9 glands, 10, the bolt of screwing; 11 slip spiders, 12 slips, 13 shells, 14 gum cover pressure caps, 15 seal rubber sleeves; 16 discharge pipe lines, 17 water-control valve doors, 18 sluicing chambeies, 19 drilling rods, 20 borings.
The specific embodiment
Through instantiation the present invention is further set forth below, should be noted that following explanation only is in order to explain the present invention, its content not to be limited.
Embodiment:
The present invention in March, 2009 to September is applied to the new giant dragon coal industry Co., Ltd big lane of Annex II and crosses three ash section top board tomography gushing waters.This gushing water aquifer head pressure 3.0MPa; Characteristics with high-pressure high-flow, because it is No. three interior construction environments of chamber are less, relatively poor to the drainage condition of water burst behind the boring water burst to the tunnel; Can draw through pipeline for guaranteeing the boring water burst; So require No. three chamber internal drillings all to use the present invention, designed a kind of high-pressure high-flow water burst boring security system, and the mounting process and use technology of this system are provided according to relevant rules; This system has stoped boring to disclose the phenomenon that drilling rod behind the high-pressure high-flow aquifer is penetrated outside under the water under high pressure effect; And security control the boring water burst, guide to other sluicing chamber to water burst smoothly through discharge pipe line, guaranteed construction safety.
As shown in Figure 1; A kind of high-pressure high-flow water burst boring security system, it comprises sealing sleeve pipe 3, sealing sleeve pipe 3 is provided with pressure meter 5; One end of sealing sleeve pipe 3 links to each other with the pipeline with sluicing chamber 18 through high pressure sluice valve 7, and the other end of pipeline links to each other with preventing the security system that drilling rod is penetrated outward; The side of pipeline connects discharge pipe line 16 through water-control valve door 17; The said security system that prevents that drilling rod from penetrating outward comprises shell 13; Shell 13 has the column cavity that adapts with drilling rod; Shell 13 is provided with slips 12, the slip spider 11 that is used to hold tightly drilling rod and the bolt 10 of screwing; The outside of shell 13 is equipped with seal rubber sleeve 15, and seal rubber sleeve 15 outer being rotary with are installed gum cover pressure cap 16.
Said sealing sleeve pipe 3 outsides are provided with principal rod sheet 2.Have groove in the said shell 13, the slips 12 and the slip spider 11 that cooperatively interact are installed in the groove, and the bolt 10 of screwing is arranged on the shell 13 and with slip spider 11 and contacts.
A kind of mounting process of high-pressure high-flow water burst boring security system, its installation steps are:
Step 1: the down-hole drilling 20 of constructing earlier; According to relevant rules drilling construction after projected depth; Wash boring is lowered to sealing sleeve pipe 3 (welding-on has principal rod sheet 2 on the sealing sleeve pipe 3) then in boring 20, sealing sleeve pipe 3 is carried out sealing; After sealing is qualified, on the sealing sleeve pipe, connect the opening arrangement that has pressure meter and aperture flange 6.
Step 2: high-pressure high-flow water burst control section device is installed.Be connected high pressure sluice valve 7 on the aperture flange 6, the sluicing chamber that has both sides flange 8 is connected on the high pressure sluice valve 7, is connected water-control valve door 17 on the delivery port flange in sluicing chamber, is passing through discharge pipe line in the flange connection on the control water law blue 17 then.Guarantee that high pressure sluice valve 7 and water-control valve door 17 are in full open position.
Step 3: assembling is installed and is prevented the security system that drilling rod is penetrated outward.Be connected slips 12 on the slip spider 11 earlier; Put into shell 13 to three groups of slips that connect and slip spider; And the bolt 10 of screwing is installed simultaneously, and buckle gland 9, put into seal rubber sleeve 15 at the opposite side of shell; Screw in gum cover pressure cap 14 (seal rubber sleeve 15 is sealed waterproof devices with gum cover pressure cap 14, also can behind the boring water burst, install) is installed.
Step 4: be connected through the screw on the shell security system that assembles in the step 3 with flange 8.
So far, high-pressure high-flow water burst boring security system installs.Effect is installed in inspection, through the degree of depth that bolt 10 screw-in screws are screwed in adjusting, regulates the gap between slips and the slip spider; Through regulating the compressing degree that the gum cover pressure cap is regulated seal rubber sleeve, to guarantee that drilling rod can pass smoothly.Above-mentioned security system is crept into installing and after the assay was approved, can in boring, being lowered to drilling rod through security system.
A kind of operating procedure of high-pressure high-flow water burst boring security system, its step is:
Step 1: prevent the technological operation that drilling rod is penetrated outward.Boring in drilling construction, run into the high-pressure high-flow aquifer after, water gushing out with high pressure through hole 20 with sealing sleeve pipe 3 pour into the aperture.Under the effect of water gushing out with high pressure, drilling rod also can outwards move rapidly.At this moment, clamp drilling rod with chuck of rig earlier temporarily, prevent that drilling rod from continuing outer moving; Then rapidly through the bolt 10 of screwing; Compressing slip spider and slips make slips tooth portion compress into drilling rod, reach the purpose of holding drilling rod tightly; The slip spider of holding drilling rod simultaneously tightly bears the buffer brake of shell 13, unclamps to prevent chuck of rig that drilling rod outwards moves behind the drilling rod.Shell 13 stops that the active force that drilling rod is penetrated comes from sealing sleeve pipe 3 through flange 8, sluicing cavity, high pressure sluice valve 7, aperture flange 6 respectively outward.The outer pulling force of penetrating drilling rod that sealing sleeve pipe 3 bears relies on frictional force and the welding-on of sealing sleeve pipe 3 and sealing cement material in principal rod sheet 2 on the sealing sleeve pipe 3 and the frictional force between the sealing cement fully.
Step 2: the control of boring water gushing out with high pressure.Above-mentioned steps 1 is slowly closed high pressure sluice valve 7 after preventing that security system that drilling rod is penetrated from playing effect outward, touches the position that drilling rod can't cut out to valve body, to reduce the water burst section.The gum cover pressure cap 14 of screwing simultaneously, compression seal gum cover 15 to reduce the gap between seal rubber sleeve 15 and the drilling rod, prevents that water burst sprays along drilling rod in the hole.Along with the increase of the pressure of screwing, seal rubber sleeve and drilling rod compress fully, and can bear certain hydraulic pressure and the water burst phenomenon can not occur.
When closing water-control valve door 17; Through gum cover pressure cap 14 seal rubber sleeve 15 compress make it to combine closely with drilling rod after; Hydraulic pressure can be brought under control the back at the boring water burst and directly measure through pressure meter 5, and flow can be measured by flow meter through discharge pipe line through opening water-control valve door 17 backs.
Following table is to use part grouting for water blocking boring basic data of the present invention
Claims (5)
1. high-pressure high-flow water burst boring security system; It is characterized in that it comprises the sealing sleeve pipe, the sealing sleeve pipe is provided with pressure meter; One end of sealing sleeve pipe links to each other with the pipeline with sluicing chamber through high pressure sluice valve, and the other end of pipeline links to each other with preventing the security system that drilling rod is penetrated outward; The side of pipeline connects discharge pipe line through the water-control valve door; The said security system that prevents that drilling rod from penetrating outward comprises shell; Shell has the column cavity that adapts with drilling rod; Shell is provided with slips, the slip spider that is used to hold tightly drilling rod and the bolt of screwing, and the outside of shell is equipped with seal rubber sleeve, and seal rubber sleeve is rotary with outward installs the gum cover pressure cap.
2. high-pressure high-flow water burst boring security system as claimed in claim 1 is characterized in that said sealing outside of sleeve is provided with the principal rod sheet.
3. high-pressure high-flow water burst boring security system as claimed in claim 1 is characterized in that having groove in the said shell, and slips that cooperatively interacts and slip spider are installed in the groove, and the bolt of screwing is arranged on the shell and with slip spider and contacts.
4. like the mounting process of each described high-pressure high-flow water burst boring security system of claim 1-3, it is characterized in that installation steps are:
Step 1: behind the construction down-hole drilling, in boring, be lowered to the sealing sleeve pipe, the sealing sleeve pipe carried out sealing, and connect pressure meter;
Step 2: on the sealing sleeve pipe, connect tapping pipe through high pressure sluice valve, the water-control valve door that passes through of tapping pipe one side connects discharge pipe line; And guarantee in the fitting operation that high pressure sluice valve and water-control valve door are in full open position;
Step 3: on shell, install earlier slips, slip spider and the bolt of screwing, back seal rubber sleeve and gum cover pressure cap are installed then, at last this security system that prevents that drilling rod from penetrating outward is installed in the other end of tapping pipe;
Step 4: effect is installed in inspection, through the degree of depth that bolt screw-in screw is screwed in adjusting, regulates the gap between slips and the slip spider; Through regulating the compressing degree that the gum cover pressure cap is regulated seal rubber sleeve, to guarantee that drilling rod can pass smoothly; Above-mentioned security system is crept into installing and after the assay was approved, can in boring, being lowered to drilling rod through security system.
5. like the method for using of each described high-pressure high-flow water burst boring security system of claim 1-3, it is characterized in that, comprise the steps:
Step 1: prevent the technological operation that drilling rod is penetrated outward: boring in drilling construction, run into the high-pressure high-flow water burst after, earlier clamp drilling rod with chuck of rig temporarily; Prevent that drilling rod from continuing outer moving, then rapidly through the bolt of screwing, compressing slip spider and slips; Make slips tooth portion compress into drilling rod; Reach the purpose of holding drilling rod tightly, the slip spider of holding drilling rod simultaneously tightly bears the buffer brake of shell, unclamps to prevent chuck of rig that drilling rod outwards moves behind the drilling rod;
Step 2: the control of boring water gushing out with high pressure: after step 1 works, slowly close high pressure sluice valve, touch the position that drilling rod is obstructed and can't continues to cut out, to reduce the water burst section to valve body; The gum cover pressure cap of screwing simultaneously, the compression seal gum cover to reduce the gap between seal rubber sleeve and the drilling rod, prevents that water burst sprays along drilling rod in the hole; Along with the increase of the pressure of screwing, seal rubber sleeve and drilling rod compress fully, and can bear certain hydraulic pressure and the water burst phenomenon can not occur;
After above-mentioned steps is accomplished, discharge through discharge pipe line from the sluicing chamber through the water-control valve door; When not needing draining, close the water-control valve door, water burst is closed in the boring fully; Regulate the flow of boring water burst through the folding degree of regulating water-control valve family of power and influence body, reach the purpose of keyhole water burst.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210018931.5A CN102561977B (en) | 2012-01-20 | 2012-01-20 | High-pressure high-flow water burst hole drilling safety system, mounting process thereof and service process |
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| CN201210018931.5A CN102561977B (en) | 2012-01-20 | 2012-01-20 | High-pressure high-flow water burst hole drilling safety system, mounting process thereof and service process |
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| CN102561977A true CN102561977A (en) | 2012-07-11 |
| CN102561977B CN102561977B (en) | 2015-01-07 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103670322A (en) * | 2013-12-19 | 2014-03-26 | 山东华宁矿业集团有限公司 | Gate valve tubular blowout preventer |
| CN103924935A (en) * | 2014-05-04 | 2014-07-16 | 南通金牛机械制造有限公司 | Slip insert tooth plate for drill stem |
| CN105041341A (en) * | 2015-08-18 | 2015-11-11 | 山东大学 | Hole opening sealing device used for static pressure permeating rotary grouting of drill hole and using method thereof |
| CN107642378A (en) * | 2017-10-31 | 2018-01-30 | 河南锦源建设有限公司 | A kind of pre grouting from the working face protrusion-dispelling water installations |
| CN109184565A (en) * | 2018-11-15 | 2019-01-11 | 淮南矿业(集团)有限责任公司 | A kind of limestone drilling and sealing that discharges water consolidates pipe method |
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| CN110374540A (en) * | 2019-05-13 | 2019-10-25 | 铜陵有色金属集团铜冠矿山建设股份有限公司 | Water control device and control hydraulic art are combined in a kind of protrusion-dispelling blowout prevention of mine detecting water by pilot hole aperture |
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| CN103670322A (en) * | 2013-12-19 | 2014-03-26 | 山东华宁矿业集团有限公司 | Gate valve tubular blowout preventer |
| CN103924935A (en) * | 2014-05-04 | 2014-07-16 | 南通金牛机械制造有限公司 | Slip insert tooth plate for drill stem |
| CN105041341A (en) * | 2015-08-18 | 2015-11-11 | 山东大学 | Hole opening sealing device used for static pressure permeating rotary grouting of drill hole and using method thereof |
| CN107642378A (en) * | 2017-10-31 | 2018-01-30 | 河南锦源建设有限公司 | A kind of pre grouting from the working face protrusion-dispelling water installations |
| CN109184618A (en) * | 2018-11-05 | 2019-01-11 | 中国矿业大学 | Device and method for drill grouting for water blocking and the routed slurry of the routed sand of prevention gushing water |
| CN109184618B (en) * | 2018-11-05 | 2020-03-31 | 中国矿业大学 | Device and method for drilling, grouting, water plugging and preventing water burst, sand burst and slurry break |
| CN109184565A (en) * | 2018-11-15 | 2019-01-11 | 淮南矿业(集团)有限责任公司 | A kind of limestone drilling and sealing that discharges water consolidates pipe method |
| CN109763860A (en) * | 2019-03-20 | 2019-05-17 | 中蓝长化工程科技有限公司 | Advanced low level controllably sluiced water conductive fault construction method |
| CN110374540A (en) * | 2019-05-13 | 2019-10-25 | 铜陵有色金属集团铜冠矿山建设股份有限公司 | Water control device and control hydraulic art are combined in a kind of protrusion-dispelling blowout prevention of mine detecting water by pilot hole aperture |
| CN110374540B (en) * | 2019-05-13 | 2024-04-05 | 铜陵有色金属集团铜冠矿山建设股份有限公司 | Mine advanced water detection orifice anti-bursting and anti-blowout combined water control device and water control process |
| CN110260922A (en) * | 2019-07-08 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | Water burst drilling holes close monitoring of structures |
| CN110260922B (en) * | 2019-07-08 | 2021-06-08 | 中国电建集团成都勘测设计研究院有限公司 | Gush water drilling and seal monitoring structure |
| CN114382491A (en) * | 2022-01-26 | 2022-04-22 | 中国有色金属工业昆明勘察设计研究院有限公司 | Drilling system for preventing water burst and mud burst of tunnel and construction method |
| CN115898367A (en) * | 2022-11-08 | 2023-04-04 | 四川省金钻地质矿产勘探工程有限责任公司 | Measuring device for advanced geological forecast drilling of tunnel and using method thereof |
| CN115898367B (en) * | 2022-11-08 | 2023-10-03 | 四川省金钻地质矿产勘探工程有限责任公司 | Measurement device for advanced geological forecast drilling of tunnel and application method thereof |
| CN116464407A (en) * | 2023-06-19 | 2023-07-21 | 太原理工智能钻进研究院有限公司 | Automatic replacing device for drill rod of drilling machine |
| CN116464407B (en) * | 2023-06-19 | 2023-08-29 | 太原理工智能钻进研究院有限公司 | Automatic replacing device for drill rod of drilling machine |
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| CN102561977B (en) | 2015-01-07 |
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