KR100740722B1 - Rock splinter removal device of excavation ground - Google Patents

Abstract

The present invention relates to a device for removing an arm piece at the bottom of an excavation hole, and a conventional removal device is difficult to remove only a slurry or a size of an inlet size of more than 10 cm in diameter, using a mechanical pump and a hang grab. As a result, there are many cases where the excavating wall of the excavation hole collapses.

Accordingly, the present invention provides a pressure control chamber 110 for discharging the introduced turbid water to the discharge port 111; Being assembled under the pressure adjusting chamber 110, there is a turbid water pump set 130 for supplying the suctioned turbid water to the pressure adjusting chamber 110 through the suction port 121, the inflow into the turbid water suction pipe 131 A first main body 120 having a primary filter network 132 for filtering foreign matters of the turbid water and a funnel-type distributor 133 which bounces and spreads the female pieces coming from the inhalation of the turbid water; A second main body 140 assembled under the first main body 120, turbid water is introduced through the lower opening 141, and a plurality of collecting nets 143 are formed on the inner wall; A spray hole 150 for spraying the turbid water discharged from the pressure adjusting chamber 110 to the bottom of the excavation hole 200; The arm piece removal apparatus main body 100, and the pressure adjusting chamber 110, the first body 120 and the second body 140 is configured to be assembled by disassembling each other by the usual binding means, pressure adjusting chamber Repeatedly spraying the water sucked into the bottom of the excavation hole while using the turbidity suction force and spraying force to effectively disturb and float rock pieces larger than 10cm in diameter, and then capture and remove them in the collecting network inside the second body. It is safer because there is no fear of collapse of the wall during work, and the work process is very quick and simple, so the effect of manpower, cost reduction and air shortening is great.

Excavators, cast-in-place piles, slurry walls, rock fragments, rock removal units,

Description

Rock splinter removal device of excavation ground

1 is a view showing a state in which the arm piece removal device of the present invention is put into the bottom of the drilling hole hanging on the lifting chain

Figure 2 is a cross-sectional view showing the internal structure of the arm piece removal device is implemented the present invention

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a cross-sectional view taken along the line B-B of FIG.

Explanation of symbols for main parts of the drawings

100: arm piece removal device 110: pressure control room

121: inlet 112: filter

120: first body 130: turbid water pump set

131: turbid water suction pipe 132: primary filter network

133: distributor 140: second body

141: opening 143: collecting network

150: injection hole 160: binding hole

170: lifting chain 200: excavator

The present invention relates to a device for removing a piece of rock at the bottom of an excavation hole, and more specifically, to a rock pile (Cobble sizes) having a diameter of 10 cm or more among the materials deposited on the bottom of a drilling hole after completion of excavation of a site-pouring pile or slurry wall when using excavation The present invention relates to a device for removing a piece of rock at the bottom of an excavation hole that can be quickly and easily removed in large quantities.

In general, when excavating the ground for the construction of cast-in-place piles or for the construction of slurry walls, which are wall structures that play the role of the order walls and the outer walls of the foundation, the ground and ground water and the excavated water flows along with the groundwater or the excavated water. Various substances, such as rock fragments, are deposited.

Many of the large pieces of material deposited on the bottom of the excavation hole causes the following problems. That is, in the case of a cast-in-place pile, the load supported by the initial main surface frictional force gradually transfers the load to the tip portion over time, leading to a decrease in the bearing capacity, and remarkably lowers the ordering effect on wall structures such as slurry walls.

Therefore, to this end, conventionally, when underground excavation is completed by using various removal devices, the slurry or rock fragments deposited on the bottom of the excavation hole is removed before the construction of the site-placement pile or slurry wall, but these have the following problems.

Using Air Lift only removes the slurry, and the Reverse Circulation (RCD) method has a limited inlet size, making it difficult to remove a 10 cm diameter arm piece. In many cases, the negative pressure is formed on the bottom of the excavation hole and the ball wall collapses. The use of Hang Grab is less efficient and there are many cases of collapse of the hollow walls.

In particular, all of the above-mentioned conventional removal apparatuses cannot effectively remove large cobble sizes larger than 10 cm in diameter, and a device capable of rapidly removing a large amount of such cobble sizes larger than 10 cm in diameter can be removed. As it has not been developed to date, conventionally, manpower and time are consumed due to the removal of rock fragments, and thus, there is a problem that the construction cost is increased and the construction date is considerably longer.

The present invention was developed in view of the above-mentioned conventional problems, and an object of the present invention is to excavate a site-pouring pile or slurry wall filled with turbid ground water or excavated water (hereinafter referred to as "muddy water") containing foreign matter. In the bottom of the ball to provide a rock removal device of the bottom of the excavation hole that can quickly and easily remove the concentrated concentrated rock pieces 10cm in diameter using the turbid water.

Hereinafter, described in detail by the accompanying drawings, preferred embodiments of the present invention, which can effectively achieve the above object of the present invention by way of example.

1 is a view showing a state in which the arm piece removing device of the present invention is put into the bottom of the excavation hole hanging on the lifting chain, Figure 2 is a cross-sectional view showing the internal structure of the arm piece removing device according to the present invention, Figure 3 A-A line sectional drawing, FIG. 4 is B-B line sectional drawing of FIG.

As shown in the present invention, in the construction of a rock piece removal device at the bottom of the site-casting pile or slurry wall construction excavation hole 200, turbid water introduced through the inlet 121 through the discharge port 111 in all directions A pressure adjusting chamber 110 discharged;

The turbidity water pump set 130 is installed at the lower portion of the pressure regulation room 110, and supplies the turbid water sucked through the turbidity water suction pipe 131 at the bottom thereof into the pressure regulation room 110 through the inlet 121. On the outer surface of the turbid water suction pipe 131, a primary filter network 132 for filtering foreign matters of the turbid water sucked and a funnel-type distributor 133 that bounces the female pieces that come with the turbid water suction and spreads it to the side are installed together. First body 120;

The second body is assembled to the lower portion of the first body 120, the lower opening 141 is spaced apart from the ground by a support leg 142 a predetermined distance, the second wall having a plurality of collecting nets 143 in a double layer on the inner wall Main body 140;

The injection hole is installed at the distal end of the discharge pipe 151 connected to each discharge port 111 of the pressure adjusting chamber 110 and fixedly installed around the second body 140 downward toward the bottom of the excavation hole 200. 150; The arm piece removal apparatus main body 100 is characterized in that the configuration.

In addition, the pressure adjusting chamber 110 and the first body 120 and the second body 140 constituting the arm piece removing device 100 are detachably assembled to each other by conventional binding means. It is done.

In this case, it is preferable to install a secondary filter 112 at the tip of the discharge port 111 of the pressure adjusting chamber 110 so that foreign matter in the turbid water is filtered through the secondary, which is foreign matter in the water injected into the injection hole 150. If present, it is to prevent the injection force is lowered.

In addition, the multi-stage collecting network 143 installed on the inner wall of the second body 140 is installed in a step shape gradually wider from the top to the bottom so that the female pieces are stepped, and the stepped collecting network ( 143) is preferably installed to be inclined obliquely upward to prevent the arm piece from falling off well.

In addition, the binding means for disassembly and assembly of the pressure adjusting chamber 110, the first body 120 and the second body 140 may use a binding means using a well-known conventional bolt / nut (not shown). Or, as shown in the drawing, if the hook 161 is caught on the latching jaw 162, it may be used to maintain the ruled state, and use the normal binder 160 that is released when the hook 161 is released. In addition, other binding means may be used.

And, the injection hole is preferably installed so as to be inclined toward the inner bottom in the space between the edge of the second body 140 and the bottom of the excavation hole 200, it is located at the bottom of the second body 140 This is because the armpieces having a diameter of 10 cm or more can be easily disturbed and floated with the sprayed water, and the floated arms can be smoothly sucked into the second body 140.

In the drawings, reference numeral 135 is a fixture of the turbid water pump set 130, and 170 is a lifting chain that is attached to the upper end of the pressure adjusting chamber 110 to lift the arm piece removing device of the present invention to the excavation hole 200. to be.

Referring to the process of removing the rock fragments deposited in the bottom of the excavation hole filled with groundwater by the rock piece removal apparatus of the present invention formed as described above are as follows.

Hanging the rock piece removal device of the present invention to the lifting chain 170 to sink into the excavation hole 200 filled with groundwater or excavation water to support the lower support leg 142 to the bottom of the excavation hole 200, the support leg 142 By a predetermined distance is maintained between the bottom of the excavation hole 200 and the lower opening 141 of the second body 140, foreign matter is contained in the second body 140 through the lower opening 141. The turbid turbid water can be introduced.

When the turbid water pump set 130 is operated in this state, turbid water introduced into the second body 140 through the lower opening 141 of the second body 140 is sucked through the myriad suction holes of the turbid water suction pipe 131. After the inlet 121 is filled into the pressure adjusting chamber 110 through the inlet 121, the turbid water filled in the pressure adjusting chamber 110 is sprayed through the injection port 150 of the discharge pipe 151 connected to the discharge port 111 The cycle is repeated continuously.

At this time, the large foreign matter of the turbid water introduced into the first body 120 is filtered to some extent by the primary filter network 132 before being sucked into the turbid water suction pipe 131, it is possible to prevent the failure of the pump thereafter Since the foreign matter is filtered by the secondary filter 112 inside the pressure adjusting chamber 110, the water injected into the injection hole 150 through the discharge pipe 151 connected to the discharge hole 111 is sprayed in a more clear state. .

In addition, since the injection hole 150 is fixedly installed downward to face the bottom of the excavation hole 200 in the circumferential bottom of the second body 140, the sprayed water is always sprayed toward the bottom of the excavation hole 200. Due to this, the rock pieces deposited on the bottom of the excavation hole 200 are easily disturbed by water sprayed even if they are 10 cm or more in diameter and floated up.

In this state, when the suction force of the turbid water suction pipe 131 acts, the female pieces rise toward the primary filter network 132 surrounding the turbid water suction pipe 131, and the female pieces are the primary filters outside the turbid water suction pipe 131. A plurality of distributors 133 installed in multiple layers on the surface of the network 132 is hit. At this time, since the distributor 133 has a narrow and top-shaped funnel shape, the arm pieces colliding with the distributor 133 are thrown out to the side.

And, the arm pieces hit the distributor 133 and bounced sideways as described above is easy to any one of the multi-stage gathering network 143 installed in a step-wise step of gradually widening round the inner wall of the second body 140 as go down It is caught and caught, the collection net 143 is inclined upwardly obliquely upward from the inner wall of the second body 140, so the female pieces captured in the collection net 143 do not fall to the bottom of the excavation hole (200) collection net ( The state captured in 143) is very stable.

As such, the turbid water pump set 130 is operated by suction pumping and spraying turbid water to disturb and disperse the rock pieces having a diameter of 10 cm or more with the spraying force of the sprayed water, and then capture them in the collecting network 143 for about 3 to 10 minutes. Repeatedly, the collecting network 143 is a state in which a considerable amount of the pieces of the size of more than 10cm in diameter is captured.

Then stop the operation of the turbid water pump set 130 and pull the lifting chain 170 to pull the arm piece removal device to the ground from the excavation hole 200 and then separate the first body 120 and the second body 140 and What is necessary is to pour out and remove the trapped rock pieces to the collection network 143 of the separated second body 140.

Then, assembling the second main body 140 to the first main body 120 again, and then again to pull the arm piece removal device to the chain 170 to the bottom of the excavation hole 200 and repeat the above process to remove the arm piece You can do the job continuously.

As described above, the present invention uses a suction force and a spray force of the turbid water while repeating the process of suctioning the groundwater or the excavated water filled in the excavation hole into the rock fragment removing device and then repeatedly circulating the sucked water to the bottom of the excavation hole. It effectively removes 10cm of sized pieces and traps them in the collection net inside the second body to remove them.Therefore, there is no fear of collapse of the wall during work, so you can work more safely. The effect of savings and shortening of air is great.

In addition, the large diameter cast-in-place pile can support the main stress by the main surface friction force even in the initial construction or the small load state, but the load is gradually transferred to the tip (driller bottom) as time passes or when the additional load is large. The bearing capacity of the tip is an important stability determinant.

Accordingly, the device of the present invention which can effectively remove the rock fragments having a diameter of 10 cm or more, which has not been specially considered in the sediment material of the tip (drilling hole bottom), is used for securing the stability of the large diameter cast-in-place pile, which is gradually increasing in utilization. It will be an important device to increase the reliability.

Claims (5)

In constructing a device for removing rock fragments at the bottom of a site-drained pile or slurry wall construction excavation hole 200, A pressure adjusting chamber 110 for discharging the turbid water introduced through the suction port 121 to the discharge port 111 provided with the secondary filters 112 on all sides; The turbidity water pump set 130 is installed at the lower portion of the pressure regulation room 110, and supplies the turbid water sucked through the turbidity water suction pipe 131 at the bottom thereof into the pressure regulation room 110 through the inlet 121. On the outer surface of the turbid water suction pipe 131, a primary filter network 132 for filtering foreign matters of the turbid water sucked and a funnel-type distributor 133 that bounces the female pieces that come with the turbid water suction and spreads it to the side are installed together. First body 120; The second body is assembled to the lower portion of the first body 120, the lower opening 141 is spaced apart from the ground by a support leg 142 a predetermined distance, the second wall having a plurality of collecting nets 143 in a double layer on the inner wall Main body 140; The injection hole is installed at the distal end of the discharge pipe 151 connected to each discharge port 111 of the pressure adjusting chamber 110 and fixedly installed around the second body 140 downward toward the bottom of the excavation hole 200. 150; Arm piece removal device of the bottom of the excavation hole, characterized in that consisting of. The method of claim 1, The pressure adjusting chamber (110), the first body 120 and the second body 140, the arm piece removal device of the bottom of the excavation hole, characterized in that the detachable assembling each other by a normal binding means. The method of claim 2, Conventional binding means for disassembly and assembly of the pressure adjusting chamber 110, the first body 120 and the second body 140, Binding means using a known bolt / nut; If the hook 161 is caught on the locking jaw 162, the hooking state 161 is maintained, and when the hook 161 is released, the conventional binding hole 160 is released; Arm piece removal device of the bottom of the excavation hole, characterized in that any one of. The method according to claim 1 or 2 or 3, The collecting network 143 of the multi-stage installed on the inner wall of the second body 140, It is installed at an oblique angle upwards, and at the bottom end of the excavation hole bottom piece removal device, characterized in that gradually installed in a wider width. The method of claim 4, wherein The injection hole 150 is fixedly installed around the second body 140, The apparatus for removing a female piece of the bottom of the excavation hole, characterized in that the injection hole is installed to face inwardly in the space between the edge of the second body 140 and the bottom of the excavation hole (200).

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