CN210105807U - Outburst prevention and blowout prevention combined water control device for mine advanced water exploration orifice - Google Patents
Outburst prevention and blowout prevention combined water control device for mine advanced water exploration orifice Download PDFInfo
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- CN210105807U CN210105807U CN201920675636.4U CN201920675636U CN210105807U CN 210105807 U CN210105807 U CN 210105807U CN 201920675636 U CN201920675636 U CN 201920675636U CN 210105807 U CN210105807 U CN 210105807U
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Abstract
The utility model discloses a mine advanced water detection orifice outburst prevention and blowout prevention combined water control device, which comprises a pre-buried orifice pipe and a drilling tool, and is characterized in that the upper edge of the orifice pipe is provided with a grouting pipe head, the grouting pipe head is provided with a high-pressure ball valve I, and the upper part of the orifice pipe is sequentially connected with a high-pressure gate valve, a shunt pressure relief conduit, an outburst prevention blowout preventer and a drilling tool slip in series through a flange; pipe heads are respectively arranged on two sides of the flow dividing and pressure releasing guide pipe, and a second high-pressure ball valve is arranged on each pipe head; the drilling tool slips are of a double-claw type structure, and the double claws are centrosymmetric. The utility model discloses a prevent suddenly and prevent spouting joint accuse water installation in case drilling reveals gushing water, no matter the water pressure height, the flow size all can realize 100% accuse water under the condition of not taking out downthehole drilling tool, has effectively increased the water inrush emergency treatment time, alleviates drainage system pressure, ensures personnel's operation safety, avoids because of the loss of property or other serious consequences that the water inrush caused.
Description
Technical Field
The utility model relates to a mining advance water exploration field especially relates to a mine advance water exploration drill way prevents suddenly preventing spouting and unites water control device.
Background
In geological disasters of mines, the hazard of underground water occupies a great proportion, and the hazard of the underground water is very prominent in the construction stage of mines, so that the engineering construction progress is seriously influenced, the engineering investment is increased, the construction cost is increased, and even the great loss of lives and properties is brought. With the development of mining industry, the resources of most shallow deposits in China and even in the world are gradually exhausted. Mine exploitation becomes inevitable trend from shallow to deep, along with the continuous increase of the depth, the hydrogeological conditions of the mine become more and more complex, and the hydrostatic pressure of the aquifer gradually increases. In the production process, when a high-pressure aquifer is faced, particularly during shaft sinking of a vertical shaft, even small-flow water burst has great influence on construction progress and cost, and even causes well flooding. The ability to resist water egress risk is higher than that of a shaft during tunnelling, but when the volume of water burst exceeds the maximum capacity of the drainage system, serious consequences can also occur, and even mine stoppages can result.
At present, in order to solve the problem of underground water hazard, precautionary measures for water exploration are taken in most cases. The general water exploration process comprises the steps of stopping tunneling when an operation surface to be excavated is about to enter an aquifer or enters the aquifer → constructing a certain number of advanced water exploration holes on the operation surface → drilling holes to reveal water burst for grouting operation → determining a next specific scheme according to actual construction conditions → recovering tunneling on the operation surface after the advanced water exploration operation is finished → tunneling to a reserved rock cap position to develop a next section of advanced water exploration, and circulating until the water exploration surface passes through the aquifer and enters a relative aquifer.
When the working face is under construction and the water is explored in advance and is drilled, the water control measure can generally adopt two modes, namely: pre-burying a hole pipe and additionally installing a high-pressure gate valve at the end part of the hole pipe; and in the second mode, the orifice pipe is not embedded in advance, and the water plugging device is installed after water is discharged and is placed in the hole. In comparison, the first mode can be regarded as active water control, namely, the orifice pipe is pre-embedded no matter water burst is exposed in the drilling process, once the water burst is exposed in the drilling process in the construction, the drilling tool in the hole is taken out, and the orifice gate valve is closed to realize water control; the second way can be regarded as passive water control, namely, the drilling hole reveals water gushing, the drilling tool in the hole is taken out, and the water plugging device is arranged at the proper position in the hole to realize water control. The two water control modes can achieve the purpose of water control aiming at low-pressure small-flow water burst, but the methods have the defects. In the second mode, once the water quantity in the hole is too large, the water pressure is too high or no complete surrounding rock exists in the hole, the water inrush is difficult to control. In the first mode, the orifice gate valve can be closed for water control only when the drilling tool in the hole is completely taken out, and whether the drilling tool can be quickly taken out depends on more factors, such as the water quantity in the hole, the water pressure, the capability of a drainage system, emergency time and the like.
Various solutions have also been proposed to address the problems faced by advanced water exploration. For example, CN101749023A discloses a method for advanced water exploration in a submarine tunnel. The method comprises the steps that a service tunnel parallel to two main tunnels is arranged between the two main tunnels to serve as an advanced parallel pilot tunnel of the main tunnels; drilling holes on each circulating face of the main tunnel and the service tunnel by using a drill jumbo simultaneously before blasting to form water detection holes, wherein each face at least comprises one water detection hole; if no water seepage occurs in the water detecting hole, continuing to dig forwards; and if water seepage occurs, grouting into the cracks immediately to block the water seepage, organizing blasting and the like. The utility model provides a submarine tunnel's advance water exploring method crosses the great characteristics of broken area construction risk of fault according to submarine tunnel and sets up an advance parallel service tunnel between two main tunnels, utilizes the groundwater condition in face the place ahead that detects from main tunnel and service tunnel to confirm subsequent construction scheme, just so can avoid the risk to can guarantee submarine tunnel's construction safety. The scheme has obvious high cost and long construction period, and is not suitable for application in ultra-deep mines.
For another example, a device with publication number CN203685288U for drilling and controlling water drainage in a coal mine underground, comprises a drill rod, a sleeve, a connecting pipe, a water delivery pipe and a rubber sleeve, wherein the drill rod sequentially passes through the inner holes of the rubber sleeve, the water delivery pipe, the connecting pipe and the sleeve, the rubber sleeve is in contact with a flange at one end of the water delivery pipe, a flange at the other end of the water delivery pipe is in bolted connection with a flange at one end of the connecting pipe, the flange at the other end of the connecting pipe is in bolted connection with a flange at one end of the sleeve, two drain pipes are arranged on the lower side of the water delivery pipe, drain valves are arranged on the drain pipes, a control valve is arranged. The utility model discloses when the construction, when meetting the water yield when great, utilize the rubber sleeve to control the drilling water yield on the one hand, on the other hand utilizes the drain pipe to directly discharge into the ditch that designs in advance with water through opening the drain valve to can in time survey the information of draining, the emergence of the hidden danger that has significantly reduced guarantees to visit the safe and reliable of water discharge facility. According to the water control device, when the flow is too large, the preset work efficiency cannot be realized, and meanwhile, the emergency treatment time is long.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the not enough that exists among the prior art, bury mounting hole mouth pipe underground in advance when constructing based on the advanced water exploring hole, a mine advanced water exploring hole mouth prevents suddenly and prevents spouting joint accuse water installation, in case drilling reveals gushing water, no matter water pressure height, the flow size all can realize 100% accuse water under the condition of not taking out downthehole drilling tool, effectively increased the emergent treatment time of gushing water, alleviate drainage system pressure, ensure personnel's operation safety, avoid because of loss of property or other serious consequences that the gushing water caused.
The utility model adopts the technical proposal that: a outburst prevention and blowout prevention combined water control device for a mine advanced water detection orifice comprises a pre-buried orifice pipe and a drilling tool, and is characterized in that a grouting pipe head is arranged on the upper edge of the orifice pipe, a high-pressure ball valve I is arranged on the grouting pipe head, and the upper part of the orifice pipe is sequentially connected with a high-pressure gate valve, a shunting pressure relief guide pipe, an outburst prevention blowout preventer and a drilling tool slip in series through a flange; pipe heads are respectively arranged on two sides of the flow dividing and pressure releasing guide pipe, and a second high-pressure ball valve is arranged on each pipe head; the drilling tool slips are of a double-claw type structure, and the double claws are centrosymmetric.
As a further improvement, the single-plate locking lead screw or the double-plate locking lead screw is selected for use in the outburst prevention blowout preventer.
As a further improvement, the double-jaw chuck of the drilling tool slip is carbonized.
As a further improvement of the utility model, the high-pressure gate valve and the orifice pipe, the reposition of redundant personnel pressure release pipe and the high-pressure gate valve, the reposition of redundant personnel pressure release pipe and prevent connecting through the screw rod nut that excels in respectively between the abrupt preventer.
The utility model discloses a beneficial effect be: the utility model discloses possess following advantage: 1) after the drilling hole bursts water, the water control can be realized quickly by 100% without taking out the drilling tool, and the situation that the water control can be realized only by taking out the drilling tool in the past is changed; 2) the water control time is short, and is generally 3 to 5 minutes; 3) the flow-dividing pressure-relief conduit is used for a high-pressure aquifer, so that the resistance of water pressure to the outburst-prevention blowout preventer and a drilling tool slip is effectively reduced, and rapid hole water is realized; 4) the method has wide application range, can be used for advanced water exploration in vertical shafts, level roads, stopes and the like, and can be used for low-pressure small-flow water inrush of drilling or high-pressure large-flow water inrush; 5) the requirement on the drainage capacity of the operation surface is low, the pressure of a drainage system can be effectively reduced after water is discharged, the construction operation safety is greatly improved, and the engineering cost investment is reduced.
Drawings
Fig. 1 is a schematic view of the present invention.
Fig. 2 is a flow chart of the water control process of embodiment 1 of the present invention.
Fig. 3 is a schematic view of the drill slip of the present invention.
Shown in the figure: the drilling tool comprises a drilling tool 1, a hole pipe 2, a high-pressure ball valve I3, a high-pressure gate valve 4, a high-pressure ball valve II 5, a flow-dividing pressure-relief guide pipe 6, an outburst-prevention blowout preventer 7 and a drilling tool slip 8.
Detailed Description
The present invention will be further described with reference to the following drawings and examples.
As shown in the figure, the outburst prevention and blowout prevention combined water control device for the mine advanced water detection orifice comprises a pre-buried orifice pipe 2 and a drilling tool 1, wherein a grouting pipe head is arranged on the upper edge of the orifice pipe 2, a high-pressure ball valve I3 is arranged on the grouting pipe head, and the upper part of the orifice pipe 2 is sequentially connected with a high-pressure gate valve 4, a shunting pressure relief guide pipe 6, an outburst prevention blowout preventer 7 and a drilling tool slip 8 in series through a flange; pipe heads are respectively arranged on two sides of the flow dividing and pressure releasing pipe 6, and a high-pressure ball valve II 5 is arranged on each pipe head; the drilling tool slips 8 are of a double-claw type structure, and the double claws are centrosymmetric.
In the embodiment 1, the size of the flange of the high-pressure gate valve is consistent with that of the flange at the end part of the embedded orifice, the nominal pressure grade of the high-pressure gate valve is selected according to the predicted hydrostatic pressure, generally 6.4-16 MPa is selected, more than 16MPa is selected under special conditions, and the high-pressure gate valve and the orifice pipe are connected and fixed by using a high-strength screw and nut. One end of the shunt pressure relief conduit is connected with the high-pressure gate valve by using a high-strength screw nut, and the flange is consistent with the flange of the high-pressure gate valve in size; and the other end of the flange is connected with the outburst prevention blowout preventer by using a high-strength screw rod nut, and the flange is consistent with the flange of the outburst prevention blowout preventer in size. The shunt pressure relief conduit is a Q235 seamless steel pipe with the drift diameter of 100mm and the length of 1.2m to 1.5m, the upper part of the shunt pressure relief conduit is opened and welded with a shunt pressure relief pipe head made of 2 seamless steel pipes, the pipe head is made of the Q235 seamless steel pipe with the drift diameter of 50mm and the length of 0.1m, one end is provided with a flat bottom and one end is provided with a screw thread, and the end of the screw thread is provided with a high-pressure ball valve with the pressure of DN50/PN 6.4-10 MPa. The outburst prevention blowout preventer is produced by salt city Youti petroleum machinery, Inc., the product model is SFZ14-21, the material is alloy steel forgings, the compression rating is 32MPa, and the diameter of a suitable drilling tool is not less than 60 mm. The slips of the drilling tool adopts a two-jaw type movable design, and the chuck is carbonized, so that the diameter of the drilling tool is not less than 60 mm.
After the construction preparation work is done, firstly, positioning and perforating are carried out on the drill hole, and a reinforcing orifice pipe is buried and installed at the drill hole. After the orifice pipe is buried, carrying out a pressure test on the orifice pipe, and if the orifice pipe is unqualified, performing injection reinforcement; if qualified, the end part of the orifice pipe is additionally provided with the anti-outburst blowout prevention combined water control device. After the device is installed, testing each part of the outburst prevention and blowout prevention combined water control device to determine whether the requirement is met, and if the requirement is not met, checking and maintaining the device; if the requirements are met, the drilling operation is ready to be carried out.
When water does not flow out in normal drilling, the first high-pressure ball valve 3 is closed, the valve core of the high-pressure gate valve 4 is opened to the maximum, the second high-pressure ball valve 5 is opened, the rubber sealing locking screw rod of the outburst prevention blowout preventer 7 is opened to the maximum, and the double-jaw chuck of the drilling tool slip 8 is opened to the maximum.
When water gushing is revealed in a drill hole, firstly judging whether the water quantity exceeds the capability of a drainage system, if not, taking out a drilling tool, firstly opening a first high-pressure ball valve, then closing a high-pressure gate valve, then closing the first high-pressure ball valve to realize water control, then dismantling a shunt pressure relief pipe and the above components, and carrying out grouting and water plugging work through the first high-pressure ball valve 3;
if the water discharge capacity is higher than the preset water discharge capacity, the slips of the drilling tool are closed firstly, so that the double-jaw chuck tightly locks the drilling tool, and the drilling tool is prevented from being flushed out by high-pressure water. And then closing the outburst prevention blowout preventer to enable the locking screw rod to be tightly meshed with the drilling tool. And then closing the high-pressure ball valve on the shunting pressure relief pipe, thereby realizing rapid water control. And when the water level is reduced to a safe height, the outburst prevention blowout preventer and the drilling tool slip are opened, and the drilling tool is taken out. And observing whether the water level continuously rises to the warning height, and repeating the above steps if the water level continuously rises. If the pressure does not rise, the high-pressure gate valve and the high-pressure ball valve are closed. And then grouting work is carried out.
If the water volume on site is large or the drilling tool can not be taken out under other emergency conditions, grouting operation can be directly carried out through the drilling tool 1 or the high-pressure ball valve 5 of the shunt pressure relief pipe to realize water plugging.
In the above example 1, the closing time is generally 3min to 5min after a plurality of tests, which also means that the 100% water control time is 3min to 5min without taking out the drilling tool.
In summary, the conventional water control method has the following disadvantages: 1) the requirement on the drainage system capacity of the working face is high, the drainage capacity must be larger than the water inflow revealed by drilling holes in most cases, however, the hydrogeological conditions of mines often have the characteristics of complexity, variability and difficulty in accurate prediction, the investment cost is increased due to the fact that the drainage capacity is too large, the safety risk is high due to the fact that the drainage capacity is too small, casualties and property loss are caused, and the production stop of the working face is caused in severe cases. 2) The drilling tool is long in taking out time, the water control efficiency is low, and the situation that the drilling tool rushes out to hurt people is very easy to occur in the drilling taking process when the water pressure in the hole is too high.
Use the utility model discloses possess following advantage: 1) the requirement on the drainage system capacity of the working face is low, and even if the drainage capacity is far smaller than the water quantity of the drilled hole, the rapid water control can be realized. If the well depth of a certain well is 908m and the water exploration operation is advanced, the net diameter of the well is 5.5m, and the water drainage capacity is only 50m3H is used as the reference value. Water burst is disclosed at the position of the hole depth of No. 11 drill hole of 38m, and the water burst amount is up to 250m3The water level rose at a rate of 8.42 meters per hour (i.e., 0.14m/min per minute) based on the wellbore profile specification. If the traditional water control method is adopted to lift all drilling tools in a hole for at least 40min, and the water burst of the operation surface worsens the operation environment, the drill lifting time is longer, the water level rises by 5.6m at the moment according to the calculation of 40min, the operation surface is flooded, personnel need to evacuate urgently, and the water control cannot be realized, so that the well is flooded. By using the combined water control device, a drilling tool does not need to be taken out, the water level is only raised by 0.7m at the moment and is at a safe water level height within 100 percent of water control time according to 5min, personnel can operate according to a normal program, the operation safety is effectively ensured, and the loss is avoided. 2) Even if high-pressure water inrush occurs after the slips of the drilling tool are additionally arranged, the drilling tool can be prevented from being flushed out, and the safety of operating personnel is ensured.
The utility model discloses a bury mounting hole mouth pipe underground in advance during construction based on advance water exploring hole to install additional at the drill way pipe end the utility model discloses a prevent suddenly and prevent spouting joint accuse water installation in case drilling reveals gushing water, no matter water pressure height, flow size all can realize 100% accuse water under the condition of not taking out downthehole drilling tool, has effectively increased gushing water emergency treatment time, alleviates drainage system pressure, ensures personnel's operation safety, avoids loss of property or other serious consequences because of gushing water causes.
It should be known to those skilled in the art that the protection scheme of the present invention is not limited to the above-mentioned embodiments, and various permutations, combinations and transformations can be performed on the basis of the above-mentioned embodiments, without violating the spirit of the present invention, all the transformations performed by the present invention fall within the protection scope of the present invention.
Claims (4)
1. A mine advanced water detection orifice outburst prevention and blowout prevention combined water control device comprises a pre-buried orifice pipe (2) and a drilling tool (1), and is characterized in that a grouting pipe head is arranged on the upper edge of the orifice pipe (2), a high-pressure ball valve I (3) is arranged on the grouting pipe head, and the upper part of the orifice pipe (2) is sequentially connected with a high-pressure gate valve (4), a shunt pressure relief guide pipe (6), an outburst prevention blowout preventer (7) and a drilling tool slip (8) in series through a flange; pipe heads are respectively arranged on two sides of the flow dividing and pressure releasing guide pipe (6), and a high-pressure ball valve II (5) is arranged on each pipe head; the drilling tool slips (8) are of a double-claw structure, and the double claws are centrosymmetric.
2. The mine advanced water exploration orifice outburst prevention and blowout prevention combined water control device according to claim 1, wherein the outburst prevention blowout preventer (7) is a single-plate locking screw or a double-plate locking screw.
3. The mine advanced water exploration orifice outburst prevention and blowout prevention combined water control device as claimed in claim 1 or 2, wherein the double-jaw chuck of the drilling tool slip (8) is carbonized.
4. The mine advanced water detection orifice outburst prevention and blowout prevention combined water control device as claimed in claim 1 or 2, wherein the high-pressure gate valve (4) and the orifice pipe (2), the shunt pressure relief conduit (6) and the high-pressure gate valve (4), and the shunt pressure relief conduit (6) and the outburst prevention blowout preventer (7) are respectively connected through high-strength screw nuts.
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| CN201920675636.4U CN210105807U (en) | 2019-05-13 | 2019-05-13 | Outburst prevention and blowout prevention combined water control device for mine advanced water exploration orifice |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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2019
- 2019-05-13 CN CN201920675636.4U patent/CN210105807U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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