CN101586470A - Advance drilling method for high-pressure water-rich filling cavity - Google Patents
Advance drilling method for high-pressure water-rich filling cavity Download PDFInfo
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- CN101586470A CN101586470A CNA2009100231950A CN200910023195A CN101586470A CN 101586470 A CN101586470 A CN 101586470A CN A2009100231950 A CNA2009100231950 A CN A2009100231950A CN 200910023195 A CN200910023195 A CN 200910023195A CN 101586470 A CN101586470 A CN 101586470A
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Abstract
The invention discloses an advance drilling method for a high-pressure water-rich filling cavity, which comprises the following steps: firstly, inwards drilling by adopting a drilling machine of which drill bit diameter is 15 to 30 millimeters more than the preset borehole diameter to obtain a borehole I with the depth of 2 to 3 meters, and then withdrawing the drilling and arranging an orifice pipe in the borehole I; secondly, arranging a T-shaped drainage-proof pipe at the outer end part of the orifice pipe; and thirdly, drilling holes in the high-pressure water-rich filling cavity by adopting the drilling machine, namely during drilling, when an impacter used by the drilling machine is blocked by sand or a drill stem is exchanged, keeping the impacter smooth by adopting a mode of introducing high-pressure water into the borehole to flush the sand in the impacter. The method has the advantages of simple drilling steps, convenient operation, low construction cost and good drilling effect, and can effectively solve various actual problems in the drilling process of the prior advance drilling method for the high-pressure water-rich filling cavity.
Description
Technical field
The invention belongs to Karst Tunnel advanced detection technology field, especially relate to a kind of advance drilling method for high-pressure water-rich filling cavity.
Background technology
When Karst Tunnel was carried out forward probe, it was a kind of accurate means the most directly perceived, the most effective, that advance borehole is surveyed.But when traditional advance borehole method was holed in the molten chamber to high-pressure water-enriched filling, usually because the prominent mud of boring gushing water causes boring to carry out, perhaps charges obstruction impactor caused boring to be forced to end in the molten chamber of high-pressure water-enriched filling.
During the Karst Tunnel advance borehole was surveyed, the high-pressure blast that high blast air compressor machine produces in normal the employing drove the colliery and holes with hydraulic drill rig (as MKD-5S) or large hydraulic rig (the careless CANSSAGRAND6 rig of complying with one's wishes).As shown in Figure 1, when Karst Tunnel is carried out the advance borehole detection, for preventing the prominent mud gushing water of holing, all need before boring, to install orifice tube 4 and high pressure sealing gate valve 3, when dashing forward the mud gushing water in the boring, can move back to bore and close high pressure sealing gate valve 3, stop prominent mud gushing water to be proceeded, prevent that prominent mud gushing water from injuring other installations and facilities such as construction operation personnel, breaking-up boring, also will prevent the well accident of flooding during the counter-slope construction.
In the work progress, the sequence of construction that orifice tube 4 and high pressure sealing gate valve 3 are installed is: adopt the drill bit than the big 15～30mm of design bore diameter to creep into 2～3m earlier; Move back brill then, orifice tube 4 and high pressure sealing gate valve 3 are installed; Afterwards, using and design the suitable drill bit of bore diameter again instead creeps into forward.For example: it is that 30m, diameter are the hole of φ 90mm that advance borehole need be bored a degree of depth, then earlier with φ 120mm bit bore 3m, moves back brill then, and internal diameter φ 108mm orifice tube and high pressure sealing gate valve are installed; Use φ 90mm drill bit then instead and continue to bore forward residue 27m.
When adopting existing advance borehole method to hole, there are following defective and deficiency: the first, when creeping into molten chamber of high-pressure water-enriched filling or Fu Shui stratum, if the prominent mud of boring gushing water, though can carry out sealing by closing the high pressure sealing gate valve 3 that is contained on the orifice tube 4, but close high pressure sealing gate valve 3 must wait to hole in water can be carried out after become silted up being annotated by charges in the molten chamber, otherwise operating personnel still can not be near face, thereby the drill bit drilling rod still can not withdraw from the boring.The second, after by high pressure sealing gate valve 3 water being stopped, boring still can not be carried out, otherwise will face the prominent mud of gushing water once more.Three, because charges stop up impactor, cause in molten chamber, can not creeping into, thereby bore and do not wear molten chamber at drill bit.
In sum, have the problem that is essential and solves below the existence of advance borehole method now: 1, when boring generation gushing water is dashed forward mud, the water water conservancy diversion can be gone out face, solve mud mixture and spray to the rig problem and close the high pressure sealing gate valve 3 preceding problems that the drill bit drilling rod is withdrawed from; 2, the water water conservancy diversion is gone out face after, solve the problem that rig still can be holed; 3, solve charges and stop up impactor, bore the molten chamber problem of not wearing.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned deficiency of the prior art, a kind of advance drilling method for high-pressure water-rich filling cavity is provided, its boring step is simple, easy to operate and construction cost is lower, boring is effective, can effectively solve existing multiple practical problem in the existing advance drilling method for high-pressure water-rich filling cavity boring procedure.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of advance drilling method for high-pressure water-rich filling cavity is characterized in that this method may further comprise the steps:
Step 1, according to the molten chamber advance borehole of conventional high-pressure water-enriched filling technology, on the pending face in molten chamber of high-pressure water-enriched filling to be detected or Fu Shui stratum, adopt bit diameter Φ that rig inwardly creeps into 2～3m and described rig than in advance more designed bore diameter Φ
0Big 15～30mm, obtaining a degree of depth is that 2～3m and diameter are the boring one of Φ; Again rig is withdrawed from from described boring one, an external diameter is installed is Φ and length greater than the orifice tube of boring one length and orifice tube is stretched to the inside bottom of described boring one in described boring one;
Rig described in the above-mentioned steps three is a hydraulic drill rig.
Described hydraulic drill rig is for being the impact drill of power with the high-pressure blast, when using described impact drill to hole, after at first the drilling rod of described impact drill being inserted and is inserted to the inside bottom of orifice tube gradually from the front port of anti-gutter, in described impact drill, feed high-pressure blast again and use high-pressure blast to continue boring, promptly obtain the boring that is shaped until the hole depth place that is drilled into designed boring described in the step 1.
In the boring procedure described in the above-mentioned steps three, after the impactor of described impact drill is stopped up by silt, close the employed high-pressure blast of impact drill earlier; Adopt the water pump that joins with described drilling rod outer end or high-pressure injection pump and the endoporus by this drilling rod inside to feed water under high pressure again in impactor, the impact device washes the silt that stops up and rinses out in impactor; After then turning off water under high pressure and in described impact drill, feeding high-pressure blast, proceed boring.
Before in the boring procedure described in the above-mentioned steps three drilling rod being changed, close the used high-pressure blast of described impact drill earlier, change drilling rod afterwards; Adopt the water pump that joins with the outer end of changing the back drilling rod or high-pressure injection pump and the endoporus by this drilling rod inside to feed water under high pressure again in impactor, the impact device washes the silt that stops up and rinses out in impactor; After turning off water under high pressure at last and in described impact drill, feeding high-pressure blast, proceed boring.
Orifice tube described in the above-mentioned steps one is positioned on the sections in described boring one outside high pressure sealing gate valve is installed.
The sidepiece interface of anti-gutter described in the above-mentioned steps two and its front and back interface are perpendicular.
Orifice tube described in the above-mentioned steps two is positioned at installs the pressure meter that the orifice tube internal pressure is detected on the sections in described boring one outside.
In the boring procedure described in the above-mentioned steps three, need to guarantee that described drilling rod is coaxial all the time with orifice tube.
The present invention compared with prior art has the following advantages:
1, the boring step is simple, easy to operate and construction cost is lower.
2, the anti-drain structure that is adopted is simple, reasonable in design and result of use is good, it is by connecing the anti-gutter of " fourth " font on the former orifice tube, and the front end (promptly positive) at " the anti-gutter of T-shaped " is adorned a high voltage bearing rubber seal plate, and reserve a boring on the rubber seal plate, only can pass borer drill rod, simultaneously adorn a mozzle, with other gutter the gutter of presetting in mozzle and the hole is linked to each other again during boring in the lower end (being the side) of the anti-gutter of " fourth " font.Particularly: the present invention at first seals the front of orifice tube by the rubber seal plate, and the prominent mud of boring gushing water can not be sprayed from the front; Secondly the mozzle by joining with anti-gutter sidepiece interface, the prominent mud of pilot bore hole gushing water flows out from the side.
2, can effectively prevent the prominent mud phenomenon of the gushing water that is occurred in the molten chamber advance borehole of the high-pressure water-enriched filling process, injure operating personnel and damage rig thereby avoid the prominent mud of gushing water to go out from the front, even the practical problem of flooding well.
2, can keep boring to carry out continuously, thereby improve drilling efficiency greatly.
3, successfully solved the molten chamber of high-pressure water-enriched filling when creeping into, charges stop up impactor and cause holing and be forced to the difficult problem of ending, can't continue to creep into forward in the molten chamber, particularly the invention solves in the detection process of molten chamber, after creeping into molten chamber, when existing gushing water to dash forward mud, operating personnel can't operate, the problem that stops to creep into and because the maintenance of equipment such as drilling rod, impactor, maintenance are improper, and cause drilling rod maybe can't creep into problem.
In sum, the present invention hole step simple, easy to operate and construction cost is lower, boring effective, can effectively solve existing multiple practical problem in the existing advance drilling method for high-pressure water-rich filling cavity boring procedure, use the present invention can successfully drill the high-pressure water-enriched filling die cavity and quick detection arrives border, molten chamber, has finally established good basis for the formulation of molten chamber processing scheme.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Construction view when Fig. 1 carries out advance borehole for adopting existing advance borehole method.
Construction view when Fig. 2 carries out advance borehole for adopting the present invention.
Fig. 3 is a flow chart of the present invention.
Description of reference numerals:
1-rubber seal plate; The 2-mozzle; 3-high pressure sealing gate valve;
The 4-orifice tube; 5-flange one; 6-flange two;
7-flange three; 8-vault line; 9-tunnel bottom line;
10-prevents gutter.
The specific embodiment
As Fig. 2, shown in Figure 3, advance drilling method for high-pressure water-rich filling cavity of the present invention may further comprise the steps:
Step 1, according to the molten chamber advance borehole of conventional high-pressure water-enriched filling technology, on the pending face in molten chamber of high-pressure water-enriched filling to be detected or Fu Shui stratum, adopt bit diameter Φ that rig inwardly creeps into 2～3m and described rig than in advance more designed bore diameter Φ
0Big 15～30mm, obtaining a degree of depth is that 2～3m and diameter are the boring one of Φ; Again rig is withdrawed from from described boring one, it is that Φ and length stretch to the inside bottom of described boring one greater than the orifice tube 4 of boring one length and with orifice tube 4 that one external diameter is installed in described boring one, and is positioned at orifice tube 4 on the sections in described boring one outside high pressure sealing gate valve 3 is installed.In the present embodiment, described pending face is to be in the vault line 8 in the molten chamber of high-pressure water-enriched filling to be detected and the face between the tunnel bottom line 9, and used rig is a hydraulic drill rig in this step.
In the boring procedure described in the step 3, after the impactor of described impact drill is stopped up by silt, close the employed high-pressure blast of impact drill earlier; Adopt the water pump that joins with described drilling rod outer end or high-pressure injection pump and the endoporus by this drilling rod inside to feed water under high pressure again in impactor, the impact device washes the silt that stops up and rinses out in impactor; After then turning off water under high pressure and in described impact drill, feeding high-pressure blast, proceed boring.And before in the boring procedure described drilling rod being changed, close the used high-pressure blast of described impact drill earlier, change drilling rod afterwards; Adopt the water pump that joins with the outer end of changing the back drilling rod or high-pressure injection pump and the endoporus by this drilling rod inside to feed water under high pressure again in impactor, the impact device washes the silt that stops up and rinses out in impactor; After turning off water under high pressure at last and in described impact drill, feeding high-pressure blast, proceed boring.In the actual mechanical process, described is that the impact drill of power also can replace with other rig with the high-pressure blast.
In the present embodiment, in the boring procedure described in the step 3, need to guarantee that described drilling rod is coaxial all the time with orifice tube 4.In the actual use, the effect of high pressure sealing gate valve 3 is: during counter-slope boring, after discharge pipe line breaks down in the flow guide system of being made up of mozzle 2 and gutter, can earlier drilling rod be withdrawed from, after close high pressure sealing gate valve 3, reach the purpose that prevents in the handling failure process the prominent watered-out well of prominent mud.
In sum, when adopting the present invention to carry out advance borehole, open high pressure sealing gate valve 3 earlier, make in the boring procedure after the prominent mud gushing water ejection in the boring, enter anti-gutter 10 and directly go through high pressure sealing gate valve 3 to the spray of the front of anti-gutter 10, meeting rubber seal plate 1 afterwards stops and (has prevented that prominent mud gushing water from directly spraying from the front, injure operating personnel and device security, keep bore operation can continue to carry out) after return, mozzle 2 rows that flow to anti-gutter 10 bottoms are in the hole in the default drainage pipe.In the boring procedure, when impactor is stopped up by silt or changes drilling rod, all adopt in boring, to feed the mode that silt washes in the water under high pressure impact device, keep impactor unimpeded.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, everyly any simple modification that above embodiment did, change and equivalent structure changed, all still belong in the protection domain of technical solution of the present invention according to the technology of the present invention essence.
Claims (9)
1. advance drilling method for high-pressure water-rich filling cavity is characterized in that this method may further comprise the steps:
Step 1, according to the molten chamber advance borehole of conventional high-pressure water-enriched filling technology, on the pending face in molten chamber of high-pressure water-enriched filling to be detected or Fu Shui stratum, adopt bit diameter Φ that rig inwardly creeps into 2～3m and described rig than in advance more designed bore diameter Φ
0Big 15～30mm, obtaining a degree of depth is that 2～3m and diameter are the boring one of Φ; Again rig is withdrawed from from described boring one, an external diameter is installed is Φ and length greater than the orifice tube (4) of boring one length and orifice tube (4) is stretched to the inside bottom of described boring one in described boring one;
Step 2, the anti-gutter (10) of one " fourth " font is installed in the outer end of orifice tube (4); Described anti-gutter (10) for have two over against the front and back interface and the tee piece of a downward opening sidepiece interface, the rear port of wherein anti-gutter (10) with orifice tube (4) joins and its front port on prevent the rubber seal plate (1) that prominent mud gushing water is gone out from the front when boring is installed, will dash forward when the sidepiece interface of anti-gutter (10) is holed with one the mud gushing water from the side water conservancy diversion walk and the mud gushing water that reduces to dash forward joins to the mozzle (2) of rubber seal plate (1) impact force; The front and back interface of described anti-gutter (10) and orifice tube (4) are located along the same line;
Step 3, employing rig are holed: at first, after the drilling rod of described rig inserted and be inserted to the inside bottom of orifice tube (4) gradually from the front port of anti-gutter (10), begin to continue boring until the hole depth place that is drilled into designed boring described in the step 1, promptly obtain the boring that is shaped; In this step, the bit diameter of described rig is Φ
0Rubber seal plate (1) described in the step 2 is provided with the through hole that the drilling rod for described rig passes.
2. according to the described advance drilling method for high-pressure water-rich filling cavity of claim 1, it is characterized in that: the rig described in the step 3 is a hydraulic drill rig.
3. according to the described advance drilling method for high-pressure water-rich filling cavity of claim 2, it is characterized in that: described hydraulic drill rig is for being the impact drill of power with the high-pressure blast, when using described impact drill to hole, after at first the drilling rod of described impact drill being inserted and is inserted to the inside bottom of orifice tube (4) gradually from the front port of anti-gutter (10), in described impact drill, feed high-pressure blast again and use high-pressure blast to continue boring, promptly obtain the boring that is shaped until the hole depth place that is drilled into designed boring described in the step 1.
4. according to the described advance drilling method for high-pressure water-rich filling cavity of claim 3, it is characterized in that: in the boring procedure described in the step 3, after the impactor of described impact drill is stopped up by silt, close the employed high-pressure blast of impact drill earlier; Adopt the water pump that joins with described drilling rod outer end or high-pressure injection pump and the endoporus by this drilling rod inside to feed water under high pressure again in impactor, the impact device washes the silt that stops up and rinses out in impactor; After then turning off water under high pressure and in described impact drill, feeding high-pressure blast, proceed boring.
5. according to claim 3 or 4 described advance drilling method for high-pressure water-rich filling cavity, it is characterized in that: before in the boring procedure described in the step 3 drilling rod being changed, close the used high-pressure blast of described impact drill earlier, change drilling rod afterwards; Adopt the water pump that joins with the outer end of changing the back drilling rod or high-pressure injection pump and the endoporus by this drilling rod inside to feed water under high pressure again in impactor, the impact device washes the silt that stops up and rinses out in impactor; After turning off water under high pressure at last and in described impact drill, feeding high-pressure blast, proceed boring.
6. according to claim 1,2 or 3 described advance drilling method for high-pressure water-rich filling cavity, it is characterized in that: orifice tube described in the step 1 (4) is positioned on the sections in described boring one outside high pressure sealing gate valve (3) is installed.
7. according to claim 1,2 or 3 described advance drilling method for high-pressure water-rich filling cavity, it is characterized in that: the sidepiece interface of anti-gutter (10) described in the step 2 and its front and back interface are perpendicular.
8. according to claim 1,2 or 3 described advance drilling method for high-pressure water-rich filling cavity, it is characterized in that: orifice tube described in the step 2 (4) is positioned at installs the pressure meter that orifice tube (4) internal pressure is detected on the sections in described boring one outside.
9. according to claim 1,2 or 3 described advance drilling method for high-pressure water-rich filling cavity, it is characterized in that: in the boring procedure described in the step 3, need to guarantee that described drilling rod is coaxial all the time with orifice tube (4).
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| CN102322773A (en) * | 2011-09-07 | 2012-01-18 | 中铁第四勘察设计院集团有限公司 | Ultra long blast hole detection method |
| CN102322773B (en) * | 2011-09-07 | 2013-08-21 | 中铁第四勘察设计院集团有限公司 | Ultra long blast hole detection method |
| CN102392661A (en) * | 2011-10-13 | 2012-03-28 | 北京中铁瑞威基础工程有限公司 | Grouting construction method for high pressure and rich water zone of tunnel and orifice pipe component |
| CN102733851A (en) * | 2012-07-05 | 2012-10-17 | 大同煤矿集团有限责任公司 | Control method for water-containing collapse columns in mining affected areas of combined reconstructed mines |
| CN102817619A (en) * | 2012-09-03 | 2012-12-12 | 中铁第四勘察设计院集团有限公司 | Combined advanced drilling exploration method for detecting water-free dissolving cavity and water dissolving cavity in tunnel |
| CN102817619B (en) * | 2012-09-03 | 2014-12-10 | 中铁第四勘察设计院集团有限公司 | Combined advanced drilling exploration method for detecting water-free dissolving cavity and water dissolving cavity in tunnel |
| CN102995647A (en) * | 2012-12-15 | 2013-03-27 | 天津大学 | Underground water control method used for grouting and seepage insulation of pile hole |
| CN102995647B (en) * | 2012-12-15 | 2014-12-17 | 天津大学 | Underground water control method used for grouting and seepage insulation of pile hole |
| CN105041325A (en) * | 2015-07-13 | 2015-11-11 | 长沙理工大学 | Construction method of high-tension water-rich extra-large-section weak breccia tunnel |
| CN105041325B (en) * | 2015-07-13 | 2017-03-22 | 长沙理工大学 | Construction method of high-tension water-rich extra-large-section weak breccia tunnel |
| CN108316948A (en) * | 2018-02-01 | 2018-07-24 | 山东交通学院 | A kind of rich water soft stratum gushing water is dashed forward the Grouting method after mud |
| CN113153307A (en) * | 2020-11-26 | 2021-07-23 | 西南交通大学 | Tunnel construction method suitable for water-rich fractured rock mass |
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Effective date of registration: 20180503 Address after: 710054 North Yanta Road, Xi'an, Shaanxi Province, No. 1 Co-patentee after: Engineering Co., Ltd of Zhong Tieyiju group the 5th Patentee after: Zhongtie No.1 Bureau Group Co., Ltd. Address before: 710054 North Yanta Road, Xi'an, Shaanxi Province, No. 1 Patentee before: Zhongtie No.1 Bureau Group Co., Ltd. |