CN210714539U - Dust device suitable for tunnel drilling in advance - Google Patents

Abstract

The utility model discloses a dust device suitable for tunnel probing in advance, including being used for inserting drilling and can dismantle fixed connection's drill way flange with the drilling, set up outside the drilling with drill way flange can dismantle the dust fall box of being connected, set up dust fall box upper end be used for being connected the inlet tube that carries out the water spray dust fall in the dust fall box with outside water source and set up in dust fall box lower extreme and be used for sewage exhaust's liquid outlet, the dust fall box is provided with the closing plate that is used for sealed parcel drilling rod with the opposite side of drill way flange joint side, and the drilling rod passes closing plate, dust fall box and drill way flange in proper order and stretches into and form dust fall. Through the utility model discloses can be under the prerequisite of guaranteeing to creep into, effectively protect health and construction.

Description

Dust device suitable for tunnel drilling in advance

Technical Field

The utility model belongs to tunnel drilling forecast field especially relates to a dust device suitable for tunnel drilling in advance.

Background

Advanced geological prediction is an important part in the construction process of tunnels in mountainous areas. However, under complex geological conditions in mountainous areas, the forecasting precision of forecasting means such as geophysical prospecting is low, and at the moment, the method of advanced drilling forecasting must be adopted to detect the surrounding rock in front. Because part of tunnel surrounding rocks belong to soft rocks and are easy to soften when meeting water, dry drilling is needed for advanced drilling forecast, namely, an air compressor is used for blowing out dust, rock debris or broken stones and the like formed by drilling from a drilled hole. However, the problem of dust fall of the hole in the advance dry drilling prediction operation is not solved effectively. Firstly, dust, rock debris or broken stones and the like generated in the operation have great harm to the personal health of operators, tools such as protective masks and the like cannot completely block the harm of raised dust, and the tools such as the protective masks and the like cannot be matched and taken constantly due to the working requirement; secondly, the visual field of operators is greatly influenced by overlarge dust, and the potential safety hazard of the environment where the operators find out in time is easily influenced due to the uncertainty of the stable condition of tunnel surrounding rocks and the outburst of disasters, so that safety accidents are caused; finally, because the air compressor used in the operation engineering has larger pressure, the range of the influence of the raised dust is also larger, namely the raised dust can also enter the gaps of all the equipment of the drilling machine, and the performance and the safety of the drilling machine are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a dust device suitable for tunnel drilling in advance can be under the prerequisite of guaranteeing to creep into, effectively protect health and construction.

For the realization purpose, the utility model provides a dust device suitable for tunnel drilling in advance, including being used for inserting drilling and can dismantle fixed connection's drill way flange with drilling, set up the dust fall box that can dismantle the connection with the drill way flange outside drilling, set up in dust fall box upper end be used for being connected the inlet tube that carries out the water spray dust fall in the dust fall box with outside water source and set up in dust fall box lower extreme and be used for sewage exhaust's liquid outlet, the dust fall box is provided with the closing plate that is used for sealed parcel drilling rod with the opposite side of drill way flange joint side, and the drilling rod passes closing plate, dust fall box and drill way flange in proper order and stretches into the drilling and.

Preferably, the water inlet pipe extends into the dust fall box body, and a spray head is arranged at one end in the dust fall box body.

Preferably, the spray head is a rotary spray head.

Preferably, the dust fall box is provided with the box flange with drill way flange connection side, the box flange passes through the bolt with drill way flange and can dismantle the connection.

Preferably, the sealing plate is detachably arranged on the inner side of the dust settling box body, and the sealing plate is a rubber plate.

Preferably, the sealing plate is provided with a cutting opening for the drill rod to pass through and wrap the drill rod.

Preferably, the orifice flange is detachably and fixedly connected with the drill hole through a hemp rope which is arranged to be wound on the outer side wall of the orifice flange to increase friction force.

Preferably, the orifice flange is inserted into the bore to a depth of no less than two-thirds of the total length of the orifice flange.

Preferably, the water inlet pipe and the liquid outlet are respectively provided with a flow meter for respectively detecting the water inlet amount and the liquid outlet amount.

Compared with the prior art, the utility model, its beneficial effect lies in:

the utility model discloses in surround drilling rod and whole drilling outer end through setting up drill way flange and dust fall box and carry out the dust fall in the drilling outside through the water spray, can guarantee under the prerequisite of creeping into, effectively protect health and construction. In the utility model, the raised dust is cooled and decelerated through the spray head, so that muddy water is finally formed and flows out from the channel at the bottom of the box body, and the impact damage of solid particles in the raised dust to the dust settling box body and the drill rod is reduced; meanwhile, the dust settling box body and the drill rod can be cooled by the spray head, so that the service life of the dust settling box body and the drill rod is prolonged. The utility model discloses in wrap up the drilling rod through setting up the closing plate and can effectively improve the leakproofness, improve the dust fall effect. The utility model discloses well inlet tube and liquid outlet set up the flowmeter respectively and can detect the inside moisture of rock stratum through business turn over water yield.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a front view schematically illustrating the present invention;

fig. 3 is a schematic view of the dust settling box body of the present invention;

fig. 4 is a perspective structural schematic view of the dust-settling box body of the present invention;

fig. 5 is a schematic view of a sealing plate of the present invention;

fig. 6 is a schematic view of the installation and use of the present invention.

Detailed Description

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.

As shown in fig. 1-6, the utility model provides a dust device suitable for tunnel drilling in advance, including being used for inserting drilling and can dismantle fixed connection's drill way flange 5 with drilling, set up dust fall box 1 that can dismantle the connection with drill way flange 5 outside drilling, set up and be used for being connected the inlet tube 2 that carries out the water spray dust fall in dust fall box 1 with outside water source and set up in dust fall box 1 lower extreme and be used for sewage exhaust's liquid outlet 3 in dust fall box 1 upper end, dust fall box 1 is provided with the closing plate 8 that is used for sealed parcel drilling rod 9 with the opposite side of drill way flange 5 connection side, drilling rod 9 passes closing plate 8 in proper order, dust fall box 1 and drill way flange 5 stretch into and form dust fall probing structure in the drilling.

The water inlet pipe 2 extends into the dust fall box body 1, and a spray head 7 is arranged at one end in the dust fall box body 1. The spray head 7 is a rotary spray head. Dust fall box 1 is provided with box flange 4 with 5 connection sides in drill way, and box flange 4 can dismantle with drill way flange 5 through bolt 6 and be connected. Closing plate 8 detachable sets up in dust fall box 1 inboard, and closing plate 8 is the rubber slab. The sealing plate 8 is provided with a cutting opening 81 for the drill rod 9 to pass through and to wrap the drill rod 9.

The orifice flange 5 is detachably and fixedly connected with the drill hole through a hemp rope which is arranged to be wound on the outer side wall of the orifice flange 5 to increase friction force. The depth of insertion of the orifice flange 5 into the bore is not less than two thirds of the total length of the orifice flange 5. The water inlet pipe 2 and the liquid outlet 3 are respectively provided with a flow meter for respectively detecting the water inlet amount and the liquid outlet amount, and the flow meters adopt electromagnetic flow meters.

In this embodiment, the outside water source that inlet tube 2 connects can set up flow control valve to can carry out real-time control to the inflow. Liquid outlet 3 can be external pipeline and arrange liquid away, guarantees that construction department environment is clean and tidy.

In this embodiment, when drilling is required, the drilling rig starts to enter the field after the face 101 of the surrounding rock 10 is ensured to be stable; preliminarily selecting the position, the aperture and the angle of the hole drilled in advance according to the forecast result of the advance geological radar; pre-slotting on the tunnel face 101 by using a drill bit with the same aperture as the aperture of the aperture flange 5, wherein the aperture is 130mm, and the drilling depth is 2/3 which exceeds the total length of the aperture flange; then the orifice flange 5 is fixed in the drilled hole, and in order to ensure the fixing effect of the flange, hemp ropes are wound on the flange to increase the friction force with the inner wall of the drilled hole. Then, the orifice flange 5 is connected to the dustfall case 1 by the bolt 6. The water inlet pipe 2 at the upper part of the dust-settling box body 1 is connected with an external water source, the spray head 7 is opened, and then the drill rig can enable the drill rod 9 to sequentially penetrate through the sealing plate 8, the dust-settling box body 1 and the orifice flange 5 to extend into a drill hole to start normal drilling. In the drilling process, the water inflow of the water inlet pipe 2 is adjusted according to the vibration amplitude and the frequency of the dustproof box body 1; and (3) observing the flow rates of the inlet liquid and the outlet liquid of the water inlet pipe 2 and the liquid outlet 3, and indicating that the water is contained in the rock stratum if the liquid outlet flow rate is obviously increased and is greater than the water inlet flow rate in the drilling process. And (5) retreating the rods one by one after the drilling reaches the planned hole depth, and dismantling equipment to finish the retreating of the drilling machine.

The foregoing is merely a preferred embodiment of the invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive of other embodiments, and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the invention as expressed in the above teachings or as known to the person skilled in the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (9)

1. The utility model provides a dust device suitable for tunnel drilling ahead, its characterized in that, including be used for inserting the drilling and can dismantle fixed connection's drill way flange (5) with the drilling, set up in the drilling outside can dismantle dust fall box (1) of being connected with drill way flange (5), set up in dust fall box (1) upper end be used for with outside water source be connected carry out water spray dust fall in dust fall box (1) inlet tube (2) and set up in dust fall box (1) lower extreme be used for sewage exhaust liquid outlet (3), the opposite side that dust fall box (1) and drill way flange (5) are connected the side is provided with closing plate (8) that are used for sealed parcel drilling rod (9), and drilling rod (9) pass closing plate (8), dust fall box (1) and drill way flange (5) in proper order and stretch into and form probing dust fall.

2. The dust fall device suitable for tunnel advanced drilling according to claim 1, characterized in that the water inlet pipe (2) extends into the dust fall box body (1) and a spray head (7) is arranged at one end in the dust fall box body (1).

3. Dust fall device suitable for advanced tunnel drilling according to claim 2, characterized in that the spray head (7) is a rotary spray head.

4. The dust settling device suitable for the advanced tunnel drilling is characterized in that a box flange (4) is arranged on the connection side of the dust settling box body (1) and an orifice flange (5), and the box flange (4) is detachably connected with the orifice flange (5) through bolts (6).

5. The dust settling device suitable for the advanced tunnel drilling according to claim 1, wherein the sealing plate (8) is detachably arranged on the inner side of the dust settling box body (1), and the sealing plate (8) is a rubber plate.

6. Dust fall device suitable for advanced tunnel drilling according to claim 1 or 5, characterized in that the sealing plate (8) is provided with cutting openings (81) for the drill rod (9) to pass through and wrap the drill rod (9).

7. The dust fall device suitable for the advanced tunnel drilling according to claim 1, wherein the orifice flange (5) is detachably and fixedly connected with the drill hole through a hemp rope which is arranged to be wound on the outer side wall of the orifice flange (5) to increase friction force.

8. A dust fall device suitable for use in advanced tunnel drilling according to claim 1 or 7, characterised in that the depth of insertion of the orifice flange (5) into the borehole is not less than two thirds of the total length of the orifice flange (5).

9. The dust settling device suitable for advanced tunnel drilling according to claim 1, wherein the water inlet pipe (2) and the water outlet (3) are respectively provided with a flow meter for respectively detecting water inlet quantity and water outlet quantity.

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