CN203114232U - Horizontal drilling lossless distance-adjustable type safety blowout preventing device - Google Patents
Horizontal drilling lossless distance-adjustable type safety blowout preventing device Download PDFInfo
- Publication number
- CN203114232U CN203114232U CN 201220742134 CN201220742134U CN203114232U CN 203114232 U CN203114232 U CN 203114232U CN 201220742134 CN201220742134 CN 201220742134 CN 201220742134 U CN201220742134 U CN 201220742134U CN 203114232 U CN203114232 U CN 203114232U
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- horizontal drilling
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Abstract
The utility model discloses a horizontal drilling lossless distance-adjustable type safety blowout preventing device, and belongs to horizontal drilling safety facilities. The horizontal drilling lossless distance-adjustable type safety blowout preventing device comprises a pre-embedded steel pipe which is provided with internal threads in a machining mode and pre-embedded in a lining wall. A distance-adjustable type orifice pipe which is provided with external threads in a machining mode is connected with one end of the pre-embedded steel pipe. A decompression small sluice valve is installed on the rear portion of the distance-adjustable type orifice pipe. A ball valve is connected with the tail end of the distance-adjustable type orifice pipe. A water stop packing device is connected on the rear portion of the ball valve. The water stop packing device comprises a packing box and a packing which is pressed into the packing box and fixed through bolts. The horizontal drilling lossless distance-adjustable type safety blowout preventing device has the advantages that drilling construction can be accomplished under the situation that rebars inside the lining wall are not damaged, larger space is provided for the construction position of the drilling construction, and the horizontal drilling lossless distance-adjustable type safety blowout preventing device is compact in structure, safe, reliable, simple in manufacturing and easy to popularize and use.
Description
Technical field
The utility model relates to a kind of horizontal drilling safety device, but is specifically related to the harmless safe blowout hookup of span-adjustable of a kind of horizontal drilling.Mainly be applicable to protection inwall reinforcing bar and the risk that prevents from sandblasting usefulness when horizontal drilling is drilled in the construction of city underground tunnel portal consolidation by freezing.
Background technology
Shield construction city underground tunnel all needs the soil body at end well portal place is reinforced when starting and receive, and is used for the construction safety that guarantees shield launching and receiving when.The portal soil stabilization generally adopts agitation pile, rotary churning pile or consolidation by freezing at present.Because freeze the soil strength height, water sealing effect is good, in the relatively poor water bearing ground of geological conditions, carry out soil stabilization and generally all adopt freezing process to carry out; Municipal construction building, pipeline etc. are intensive, and often ground does not have the construction plant, adopts the horizontal frozen method to carry out soil stabilization in this case.When fetching water flat freezing hole with rig, can damage reinforcing bar in the inwall, structural safety is impacted; And because geological conditions is poor, the risk that can occur sprays water sandblasts causes soil erosion when serious, and surface collapse causes catastrophic failure to surface structures etc.; And the end well structure is finished during freezing hole construction, and portal top board, beam etc. have hindered the construction of freezing hole, and former treating method all is that top board is removed, and treats to go after frozen construction is finished to recover again, and causes bigger waste to engineering.
Summary of the invention
In order to address the above problem, but the utility model provides a kind of horizontal drilling to can't harm the safe blowout hookup of span-adjustable, has avoided the damage of boring to the inwall structure reinforcing bars, can effectively control the risk that sandblasts when horizontal drilling is drilled in the construction.
The utility model is realized with following technical scheme: but the harmless safe blowout hookup of span-adjustable of a kind of horizontal drilling, comprise the embedded steel tube that is processed with internal thread that is embedded in the inwall, but the span-adjustable orifice tube of silk outside embedded steel tube one end connection one is processed with, but at span-adjustable orifice tube rear portion the little gate valve of pressure release is housed, but the tail end of span-adjustable orifice tube is connected with ball valve; The ball valve rear portion connects the sealing packing unit; Described sealing packing unit comprises packing box, is pressed into the packing of also using bolt in the packing box.
Owing to adopted technique scheme, namely in inwall, shift to an earlier date embedded steel tube, but embedded steel tube and the screwed connection of span-adjustable orifice tube, at the welding slip casting of orifice tube rear portion, the little gate valve of pressure release, afterbody connects a ball valve; The ball valve rear portion connects the sealing packing unit again; But drilling rod creeps at the harmless safe blowout hookup of span-adjustable of horizontal drilling during boring.Because but to shift to an earlier date pre-buried with the span-adjustable orifice tube isometrical and be processed with the steel pipe of internal thread, avoided the damage of drilling construction to the inwall reinforcing bar in inwall, protected structural safety; The little gate valve of pressure release has been installed, if feedwater when creeping into the hole internal pressure too big, can open little gate valve and carry out pressure release, can also also can replenish stratum loss by little gate valve slip casting by closing little gate valve conservation of soil and water amount.When but the ball valve of the harmless safe blowout hookup afterbody of span-adjustable of horizontal drilling sandblasts risk for accident appears in boring, provide safe control device.And the latter linked sealing packing unit of ball valve can guarantee to combine closely with drilling rod in the boring procedure, the soil erosion risk in having prevented from effectively creeping into.
Good effect of the present utility model is: but the harmless safe blowout hookup of span-adjustable of horizontal drilling can be finished drilling construction under the situation of not damaging reinforcing bar in the inwall, make the drilling machine construction position that bigger space arranged.Compact conformation, safe and reliable, make simply, be easy to promote the use of.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the utility model structural representation.
Among the figure: but 1 span-adjustable orifice tube, 2, ball valve, 3, the sealing packing unit, 3-1, packing, 3-2, packing box, 4, the little gate valve of slip casting pressure release, 5, embedded steel tube, 6, inside and outside silk, 8, inwall, 9, ground-connecting-wall, 10, drill bit, 11, connecting bolt.
The specific embodiment
As shown in Figure 1, but the harmless safe blowout hookup of span-adjustable of horizontal drilling comprises and is embedded in isometrical and be processed with the embedded steel tube 5 of internal thread with orifice tube in the inwall 8, but the span-adjustable orifice tube 1 that is connected with embedded steel tube 5, but slip casting, pressure release are housed with little gate valve 4 at roll adjustment orifice tube rear portion, if the hole internal pressure is too big when feedwater is crept into, can open little gate valve 4 and carry out pressure release, can also also can carry out slip casting by little gate valve 4 and replenish the stratum loss by closing little gate valve 4 conservation of soil and water amounts.But the tail end of span-adjustable orifice tube 1 is connected with ball valve 2; When boring appearance accident sandblasts risk, can close ball valve 2.Ball valve 2 rear portions connect sealing packing unit 3; Described sealing packing unit 3 comprises packing box 3-2, be pressed in the packing box and with bolt 11 fixing packing 3-1.
According to each hole site of design pre-buried good steel pipe 5 on inwall 8.But the span-adjustable orifice tube 1 that an end is processed with outer silk is connected with embedded steel tube 5, after connecting, loads onto ball valve 2, again ball valve 2 is opened,, ground-connecting-wall 9 is opened always and worn from ball valve 2 open interiors with Tapper, at this moment, big as the water sand flow amount in the stratum, just in time shut gate.
Adjust the rig position by concrete condition, and fix, drill bit is packed in the opening arrangement, and packing 3-1 gently is pressed in the packing box 3-2, fixing with connecting bolt 11.At first adopt dry type to creep into, when creeping into difficultly not drilling depth, carry out water filling from rig and creep into, open slip casting, pressure release simultaneously with little gate valve 4, observe water outlet, the situation of shaking out, utilize the switch of the little gate valve of pressure release to control out husky amount, guarantee ground safety, sedimentation do not occur.As occur unexpectedly when sandblasting in a large number, and in time drilling rod 10 is extracted, ball valve 2 is closed, take to continue again to creep into after the measure such as slip casting.
Boring is finished the back and has been sealed bottom the hole with plug, and concrete grammar is, utilize extension bar with on the plug to the bottom in hole, utilize left-hand thread in shackle, plug is tightened.Suppress leak test by designing requirement then.
Claims (4)
1. but a horizontal drilling can't harm the safe blowout hookup of span-adjustable, it is characterized in that: comprise the embedded steel tube that is processed with internal thread (5) that is embedded in the inwall (8), but the span-adjustable orifice tube (1) of silk outside embedded steel tube one end connection one is processed with, but at span-adjustable orifice tube (1) rear portion the little gate valve of pressure release (4) is housed, but the tail end of span-adjustable orifice tube (1) is connected with ball valve (2); Ball valve (2) rear portion connects sealing packing unit (3); Described sealing packing unit (3) comprises packing box (3-2), is pressed in the packing box and the packing (3-1) of using bolt (11) to fix.
2. but the harmless safe blowout hookup of span-adjustable of horizontal drilling according to claim 1 is characterized in that: described embedded steel tube (5) but isometrical and be processed with internal thread with span-adjustable orifice tube (1).
3. but the harmless safe blowout hookup of span-adjustable of horizontal drilling according to claim 1 is characterized in that: described ball valve (2) but be connected with span-adjustable orifice tube (1) employing bolt.
4. but horizontal drilling according to claim 1 can't harm the safe blowout hookup of span-adjustable, it is characterized in that: described sealing packing unit (3) adopts bolt to be connected with ball valve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220742134 CN203114232U (en) | 2012-12-28 | 2012-12-28 | Horizontal drilling lossless distance-adjustable type safety blowout preventing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220742134 CN203114232U (en) | 2012-12-28 | 2012-12-28 | Horizontal drilling lossless distance-adjustable type safety blowout preventing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203114232U true CN203114232U (en) | 2013-08-07 |
Family
ID=48894592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220742134 Expired - Fee Related CN203114232U (en) | 2012-12-28 | 2012-12-28 | Horizontal drilling lossless distance-adjustable type safety blowout preventing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203114232U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863605A (en) * | 2015-04-20 | 2015-08-26 | 北京中煤矿山工程有限公司 | Once-through drilling method capable of cutting barriers in water-rich sand layer |
| CN112878909A (en) * | 2020-12-24 | 2021-06-01 | 南昌轨道交通集团有限公司 | Anti-gushing method for drilling horizontal freezing hole of foundation pit |
-
2012
- 2012-12-28 CN CN 201220742134 patent/CN203114232U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863605A (en) * | 2015-04-20 | 2015-08-26 | 北京中煤矿山工程有限公司 | Once-through drilling method capable of cutting barriers in water-rich sand layer |
| CN112878909A (en) * | 2020-12-24 | 2021-06-01 | 南昌轨道交通集团有限公司 | Anti-gushing method for drilling horizontal freezing hole of foundation pit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20161228 |