JP2012087497A - Boulder stone removal device and boulder stone removal method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a removal device and a removal method capable of safely and surely removing, moving and partially destroying boulder stones.SOLUTION: The removal device includes: a container 10 which is opened at one end; a firing implement 20 of non-gunpowder composition which is disposed inside the container 10; a non-gunpowder gas generator 30 which is disposed inside the container 10; and a blocking body 14 which blocks the open end of the container 10. The open end side of the container 10 is disposed toward the boulder stone on a slope, and a gas pressure generated by the combustion of the non-gunpowder gas generator 30 by ignition by the firing implement 20 of non-gunpowder composition is jetted from the open end of the container 10 toward the boulder stone. When lifting the boulder stone on the slope, arrangement is performed on the downstream side of the boulder stone such that the gas pressure of the boulder stone removal device 1 is jetted upwards through the centroid of the boulder stone, the firing implement 20 of non-gunpowder composition is ignited by a remote ignition device 40 communicated with the boulder stone removal device 1, and the gas pressure generated by the combustion of the non-gunpowder gas generator 30 is jetted from the open end of the container 10 toward the boulder stone.

Description

  The present invention relates to a boulder removing apparatus and a boulder removing method for safely and reliably removing, moving, and partially crushing rocks (rolls) such as rocks (rolls) on a slope and debris tracks.

  In the present invention, the boulder means a stone that moves from a rock production position and is located elsewhere as generally defined by civil engineering terms. Originally, there is a rocky mountain upstream of the river, the rock that collapsed from it flows out and is left behind in the soil, which forms the current terrain. To put it more simply, there are rocks that should have been made of soil because the debris flow and the ruins of ancient rivers have become the present terrain after many years. This rock is called a boulder. All the rocks after the debris flow are stones.

  Dangerous stones are a higher level concept of rolling stones. For example, rocks (rolls) that lie flat in the countryside are an obstacle to agriculture but are not dangerous. However, if there are rocks on a steep slope, it is dangerous if it collapses. Dangerous stones are called dangerous stones. An example of a dangerous stone (rolled stone) is a dangerous stone on the cliff, which is not strange at any time. In this case, it is a natural cliff danger stone.

  Slope means a slope made by humans with a slope below the stable angle. The stable angle is the maximum angle of the slope that does not collapse naturally, and is 30 degrees or less in general soil quality. The slope exceeding the stable angle becomes a cliff. In general civil engineering work, dangerous stones are removed to form a safe slope.

  Conventionally, removal of dangerous stones on slopes, removal of rocks such as debris tracks, moving method of concrete blocks, partial crushing, etc., lifting and removal by heavy equipment such as cranes, combination of crushing and lifting removal by breaker, For example, a method using a heavy machine such as a bucket apparatus or a heavy machine such as a bulldozer using a soil discharge plate apparatus is used (see, for example, Patent Documents 1, 2, and 3).

In invention of patent document 1, the technique which can lift a rock reliably is disclosed only by drilling on the surface of a rock.
In the invention of Patent Document 2, based on the rock lifting technique described in Patent Document 1, even a rock that exceeds the allowable lifting weight is disclosed with a technique of removing it while using crushed rock crushing together.

  In the invention of Patent Document 3, a rock excavation plate, a holding tool, and a rock breaking device are integrally attached to a caterpillar heavy machine, and the crushing stone can be primarily crushed and then moved and transported by a remote-controlled heavy machine. Therefore, it is safe for workers.

JP 2001-59233 A JP 2001-226970 A JP-A-7-186068

However, the invention described in Patent Document 1 is not suitable for dangerous stones or the like on slopes because there is a risk of falling even if a person only gets on them for drilling.
Moreover, in invention of patent document 2, it is necessary for a worker to approach for a rock formation work, and it is dangerous. In addition, brittle materials such as rocks have a unique property that when cracks enter, the cracks grow at once and break instantaneously, and it is difficult to predict and condemn the signs of falling.

Further, in the invention described in Patent Document 3, even a caterpillar type heavy machine has a limit in climbing ability and safety angle, and it is difficult to work in a place where the inclination exceeds 40 degrees. If the capacity of heavy machinery is greatly exceeded, work will not be realized.
In addition, the problem common to the inventions described in Patent Documents 2 and 3 is that a space where a self-propelled heavy machine can be carried in and operated because a self-propelled heavy machine such as a crane or a caterpillar heavy machine is used. Is that you need.

In addition, since the processing capacity of heavy equipment is proportional to its size, there is an upper limit to the rocks that can be used by heavy equipment that can be operated.
If it cannot be handled with heavy machinery, a blasting method is used to move it after crushing, but there are many restrictions on the blasting method.
In particular, when removing a boulder on a steep slope or the like, there may be a risk of falling due to drilling work or charge work, and the work is difficult.

  The present invention has been made to solve such conventional problems, and an object of the present invention is to provide a removal apparatus and a removal method capable of safely and reliably removing, moving, and partially destroying a calculus. There is.

  The invention according to claim 1 includes a container having one end opened, a non-explosive composition ignition device disposed in the container, and a non-explosive gas generating agent disposed in the container, The open end of the container is arranged toward the boulder on the slope, and the gas pressure generated by the combustion of the non-explosive gas generating agent by ignition with the ignition tool of the non-explosive composition is directed toward the boulder from the open end of the container. It is made to eject.

According to a second aspect of the present invention, in the boulder removing device according to the first aspect, the non-explosive composition igniter is disposed in the center of the container and is subjected to a gas leakage prevention process so that the lead wire is disposed on the side wall of the container. And connected to a remote ignition device via the lead wire.
The invention according to claim 3 is the rolling stone removing device according to claim 1 or 2, wherein the ratio between the length L of the container and the inner diameter D of the container is L / D = 1 to 10, preferably L / D. = 2-6.

According to a fourth aspect of the present invention, when lifting a boulder on a slope, the gas pressure of the boulder removing device according to any one of claims 1 to 3 is jetted upward through the center of gravity of the boulder on the downstream side of the boulder. And igniting the non-explosive composition igniter by a remote igniter that communicates with the boulder removal device, and the gas pressure generated by the combustion of the non-explosive gas generating agent toward the boulder toward the boulder It is characterized by ejecting more.
According to a fifth aspect of the present invention, in the method for removing a boulder according to the fourth aspect, when a plurality of the boulder removing devices according to any one of the first to third aspects are arranged, the direction of gas pressure action of each of the boulder removing devices. The composite vector is arranged so as to pass upward through the center of the boulder.

In the invention according to claim 6, when moving the rock on the slope, the gas pressure of the stone removing device according to any one of claims 1 to 3 is desired to move through the center of the stone. It arranges so that it may spout in the direction, and it ignites the ignition tool of the non-explosive composition by the remote ignition device which communicates with the boulder removing device, and the gas pressure generated by combustion of the non-explosive gas generating agent is directed toward the boulder It is ejected from the open end of the container.
According to a seventh aspect of the present invention, in the method for removing a boulder according to the sixth aspect, when a plurality of the boulder removing devices according to any one of the first to third aspects are disposed, the direction of gas pressure action of each of the boulder removing devices. The composite vector is arranged so as to pass through the center of the boulder and to be moved.

The invention according to claim 8 provides the apparatus for removing a boulder according to any one of claims 1 to 3 with respect to the center of gravity of the boulder so as to take a large rotation moment of the boulder when the boulder on the slope is rotated. A remote ignition device that is disposed at a position away from the boulder and communicates with the boulder removal device ignites the non-explosive composition igniter to direct the gas pressure generated by the combustion of the non-explosive gas generating agent toward the boulder. And ejecting from the open end of the container.
The invention according to claim 9 is the method of removing rock according to claim 8, wherein when a plurality of the stone removing devices according to any one of claims 1 to 3 are arranged, the gas pressure acting direction of each of the stone removing devices is provided. It arrange | positions in the position where the rotational moment of a synthetic | combination vector becomes large.

According to the present invention, a non-explosive gas generating agent and a non-explosive composition igniter are placed in a container such as a bottomed iron pipe that is open at one end, and placed in close proximity to or in contact with a boulder or the like. However, since gas is generated in an instant and the boulders are moved and partially crushed by the gas pressure, pretreatment such as drilling is unnecessary even in dangerous places such as steep slopes.
In addition, it is light in weight and easy to move by manpower, so it can be used in swamps and mountainous areas where heavy machinery cannot be put.

It is sectional drawing which shows the boulder removal apparatus which concerns on one Embodiment of this invention. It is sectional drawing which shows the ignition tool of the non-explosive composition used for the boulder removal apparatus of FIG. It is a schematic explanatory drawing which shows the state which set the rock removal apparatus of FIG. 1 to the rock (rollstone) lower part on a slope. It is a schematic explanatory drawing which shows a mode that the ignition tool of a non-explosive composition is ignited and the edge part vicinity of a rock is lifted with gas pressure. It is a schematic explanatory drawing which shows the state where the rock once lifted with the gas pressure starts rolling. It is a schematic explanatory drawing which shows the state which set the several rock removal apparatus of FIG. 1 to the rock (rollstone) lower part on a slope.

Hereinafter, the present invention will be described based on embodiments shown in the drawings.
FIG. 1 shows a boulder removal apparatus 1 according to an embodiment of the present invention.
The rolling stone removing apparatus 1 according to the present embodiment, for example, welds a steel plate 12 having a 50 mm square and a thickness of 3.2 mm to one open end 11a of a steel pipe 11 having an outer diameter of 42 mm, an inner diameter of 34 mm, and a total length of 60 mm, and the other The open end 11b has a boulder removing device main body (container) 10 that serves as a gas outlet. The boulder removing device main body (container) 10 is provided with a hole 13 for passing a lead wire (electric wire) 28 of an ignition tool 20 having a non-explosive composition to be described later on a side wall on the steel plate 12 side. The steel plate 12 forms the installation surface of the roll removal device 1.

An igniter 20 having a non-explosive composition is disposed in the center of the boulder removing device main body (container) 10 via a support. The lead wire (electric wire) 28 of the ignition tool 20 having a non-explosive composition is taken out from the hole 13 provided in the boulder removing device main body (container) 10, and the hole 13 is blocked with an epoxy adhesive so that gas does not leak. .
A non-explosive gas generating agent 30 is filled in the boulder removing device main body (container) 10 in which an ignition tool 20 having a non-explosive composition is disposed in the center. Then, after filling the non-explosive gas generating agent 30, the other open end 11 b serving as a gas outlet is covered with the sealing body 14. The blockade 14 is easily provided by the function of preventing the non-explosive gas generating agent 30 from overflowing and the gas pressure generated during combustion of the non-explosive gas generating agent 30 when the boulder removing device 1 is provided at the time of removing the foliage. Any device having a function to be destroyed may be used, and for example, cardboard, aluminum wheels, wraps, various cloths, and the like are attached to the other open end 11b directly by bonding, fixing, or string fastening.

  A lead wire (electric wire) 28 drawn from the boulder removing device main body (container) 10 is connected to the remote ignition device 40. The remote ignition device 40 may be anything that can be carried so that the operator can operate it in a safe place at the time of removing the calculus by adjusting the length of the lead wire (electric wire) 28, for example. is not.

Next, an ignition tool 20 having a non-explosive composition will be described with reference to FIG.
The non-explosive composition igniter 20 includes a bottomed gas generator tube 21 formed of a cylindrical container opened on only one side, a gas generator 22 and an igniter cup 23 filled in the gas generator tube 21. And an igniter holder 24, an igniter 25, a plug 26 with a bridge line, and a lead wire (electric wire) 28.

  By using a soft metal material such as aluminum, the gas generator tube 21 can be easily destroyed by the reaction heat and reaction gas pressure of the gas generating agent 22 that is a non-explosive composition. The gas generator tube 21 may be any soft metal material with good workability. However, since the gas generator tube 21 has the same shape as an electric detonator using copper, for example, aluminum (for example, Al-6016-0) is used. By using it, the confusingness is removed. The aluminum gas generator tube 21 is alumite-treated on the inner and outer surfaces.

  The gas generator tube 21 is filled with a gas generating agent 22 in a range of 0.1 g to 1.1 g. The gas generating agent 22 uses a low vibration / low noise crushing chemical gunsizer (trade name, manufactured by Nippon Koki Co., Ltd.). This is a non-explosive crushing composition that crushes rocks and the like without requiring a consumption permit in exactly the same manner as the crushing method using explosives. This non-explosive crushing composition is disclosed, for example, in JP-A-11-029389. The present inventor does not intend to crush the non-explosive crushing composition, but to achieve the purpose of moving the rock by using this gas pressure. It was found that can be reduced. Moreover, the dosage of the gas generating agent 22 can be changed in accordance with the performance of moving the stone.

Next, the gas generating agent 22 will be described.
The ratio of the thermite agent, gas generator, binder and blunting agent constituting the gas generating agent 22 is such that the thermite agent is composed of 33 to 44 parts by weight of cupric oxide and 9 to 17 parts by weight of aluminum, and the gas generating agent is potassium. It comprises 45 to 55 parts by weight of alum or ammonium alum, the binder comprises 1.2 to 1.8 parts by weight of vinyl chloride, and the blunting agent comprises 2.4 to 2.6 layers of calcium stearate.

  In this embodiment, a thermite agent composed of 11.5 parts by weight of aluminum and 38.5 parts by weight of cupric oxide, a gas generating agent composed of 50 parts by weight of potassium alum or ammonium alum, and previously dissolved in acetone. Put 1.5 parts by weight of vinyl chloride powder used as a binder in the same container, add an appropriate amount of acetone and mix well. When acetone is almost volatilized and solidified, it is granulated with an 8-mesh sieve and dried. After drying, 2.5 parts by weight of potassium stearate as a blunting agent and an appropriate amount of acetone are added and mixed slowly. After acetone is vaporized and solidified, granulation is performed and drying is performed to obtain a gas generating agent 22.

As the gas generating agent 22, a sieving product with 24 Tyler mesh passing 42 Tyler mesh stopping is used. That is, the particle size is adjusted in the range of 0.35 mm to 0.71 mm.
In the gas generator tube body 21, a capsule-shaped igniter cup 23 made of a synthetic resin, which serves as a partition wall, is disposed to prevent mixing of the filled gas generant 22 and igniter 25. The igniter cup 23 may be a metal or a non-metal. However, since the metal material has good electric properties, the electric ignition signal does not flow to the bridge line 27 and is expended on the discharge energy. Insulation processing (for example, alumite processing, etc.) needs to be performed because there is a possibility that 25 may not be ignited.

The igniter cup 23 has a shape obtained by half-cutting a capsule formed of a thin film having a thickness of 0.1 μm or less, and is inserted into the igniter holder 24. In the igniter cup 23 and the igniter holder 24, an igniter 25 made of a non-explosive composition and an electric bridge wire (for example, platinum-iridium wire) 27 of a plug 26 with a bridge wire are arranged. As the ignition agent 25, boron / cupric oxide = 10 to 20% by weight / 80 to 90% by weight was used.
After inserting the igniting agent holder 24 into the plugging unit 24 with the electric bridge line, the embedment 24 with electric bridge line is filled with the igniting agent 25 in the range of 0.06 g to 0.13 g, and after the igniter cup 23 is inserted. The gas generator 22 is press-fitted into the gas generator tube 21 filled with the gas generator 22, and crimped portions 29 a and 29 b are formed at two locations from the outside of the gas generator tube 21.

Next, assembly of the ignition tool 20 having a non-explosive composition will be described.
(1) A cylindrical igniter holder 24 is press-fitted into the electric bridge line connecting side of the plug 26 with the electric bridge line, and the igniter 25 measured in a certain amount is filled therein.
(2) The igniter cup 23 for preventing leakage of the igniter 25 to the outside is put on the igniter holder 24 and press-fitted.
(3) The gas generating agent 22 sieved in the gas generator tube 21 is weighed to a certain amount and filled.
(4) A plug 26 with a bridge line is inserted into the open end of the gas generator tube 21 filled with the gas generating agent 22, and caulking portions 29a and 29b on the circumference of the gas generator tube 21 over the entire circumference. Caulking. The caulking portions 29a and 29b are usually two stages, but may be one stage.
Thus, the ignition tool 20 having a non-explosive composition can be obtained.

Next, the non-explosive gas generating agent 30 will be described.
In the present invention, the non-explosive gas generating agent 30 is classified as follows.
1) Major classification Thermite reaction agent + agent with good vaporization The high temperature (exotherm) generated by the thermite reaction instantly vaporizes and expands components that are easily vaporized by heating, and uses the energy.
Thermite reactive agent consists of an oxidant component and a fuel component

2) Middle classification Oxidizer component: Metal oxide such as iron oxide, copper oxide (cupric oxide), manganese dioxide Fuel component: Aluminum, magnesium, magnalium (alloy of aluminum and magnesium), alicium (of aluminum and lithium) Metals such as alloys), boron Gas generators: Magnesium sulfate heptahydrate, nickel sulfate hexahydrate, potassium aluminum sulfate 12 hydrate (generic name: potassium alum), aluminum ammonium sulfate 12 hydrate (Generic name: ammonium alum), sodium sulfate decahydrate, copper sulfate pentahydrate, etc., compounds with water that can be separated by heat, fine powders of hydrocarbons such as polyethylene, sucrose, methaaldehyde, Compounds such as sodium borohydride that decompose easily by heat to generate gases such as hydrogen * This is fine powder each other, mixture * oxidant and fuel large flour body with each other in specific surface area, than the thermite reaction formula, the composition comprising a stoichiometric reaction scheme is good.
* The gas generating agent has a stoichiometric composition in which the vaporized components are completely gasified rather than the heat generated by the thermite reaction.
* As the gas generating agent, substances such as polyethylene fine powder that easily decomposes by heat and generate hydrogen gas can be used.

3) Sub-category Non-explosive gas generant composition is composed of cupric oxide CuO (oxidizer), aluminum Al (fuel), potassium aluminum sulfate 12 hydrate AlK (SO ₄ ) ₂ · 12H ₂ O (gas) Occurrence). Potassium alum is mixed in an external ratio to a mixture of cupric oxide and aluminum. As additive components, potassium stearate and polytetrafluoroethylene are blended.
Table 1 shows the possible range, suitable range, desirable range, and practical composition of the non-explosive gas generant composition.

In the table, the suitable composition and the practical composition of potash lucidity * are indicated by internal division.
Examples of the non-explosive gas generant composition used in a desired range include the following.
(1) Aluminum powder containing 30% or more of fine particles having a particle size of 44 μm or less in a particle size distribution, and containing 15 to 30 weights of a dust scattering inhibitor made of polytetrafluoroethylene and an antioxidant made of stearic acid or aluminum stearate And 100 parts by weight of a thermite agent containing 70 to 80% by weight of cupric oxide containing 95% or more of fine particles having a particle size of 74 μm or less in particle size distribution, and 80 to 120 parts by weight of a cracking gas generating agent. Non-explosive crushing composition.
(2) a thermite agent composed of aluminum and cupric oxide, a gas generating agent composed of potassium alum or ammonium alum, a binder composed of vinyl chloride, and a desensitizing agent for reducing small gas flame ignition sensitivity composed of calcium stearate; A non-explosive crushing composition comprising the desensitizing agent in a range of 0.5 to 5.0% by weight.

Examples of the non-explosive gas generant composition used in a suitable range include the following.
24 Tyler mesh passage 42 Tyler mesh non-explosive gas generating agent consisting of a screened product.

Examples of the non-explosive gas generating composition used for the practical composition include the following.
A thermite agent comprising 38.5 parts by weight of cupric oxide and 11.5 parts by weight of aluminum, a gas generating agent comprising 50 parts by weight of potassium alum or ammonium alum, and a binder comprising 1.5 parts by weight of vinyl chloride powder. And a non-explosive gas generating agent obtained by subjecting a granulated product composed of 2.5 parts by weight of potassium stearate to a sieving process of passing through 24 Tyler mesh and 42 Tyler mesh.
The additives potassium stearate 2.5% and vinyl chloride 1.5% are further added.

In the present invention, the reason for using the non-explosive gas generating agent is as follows.
Withstand long-term storage. There are combustion residues, but the combustion residues do not corrode the equipment. Unlike explosives, there is no regulation by the Explosives Control Law, so handling is easy.

Next, the usage method of the boulder removal apparatus 1 which concerns on this embodiment is demonstrated.
First, a place where the boulder removing device 1 can be stably installed is secured.
Next, considering how to apply gas pressure, digging the ground, stacking sandbags, and making scaffolds.
In order to prevent the boulder removing device 1 from sinking into the installation surface by the reaction force, it may be a metal floor plate that prepares a base with a floor plate, a square member, or the like.
The tumbling stone removing device 1 cures the surroundings with a sandbag or the like in order to prevent movement due to falling or reaction force.
Next, the calculus removing device 1 is firmly fixed with a support metal fitting or the like.

Next, as a specific example of use, a stone removal work on a slope will be described.
1) When the rock is simply moved As shown in FIG. 3, when the rock 51 on the slope 50 is lifted upward, the action direction of the boulder removing device 1 is set to the rock 51 by digging the soil under the rock 51. The installation portion 52 is formed so as to face upward through the center of gravity.
Next, the lead wire (electric wire) 28 drawn from the boulder removing device main body (container) 10 is extended to a place where the operator can operate at a safe place when removing the boulders, and connected to the remote ignition device 40.

Next, as shown in FIG. 4, the remote ignition device 40 ignites the non-explosive composition igniter 20 of the boulder removing device 1, burns the non-explosive gas generating agent 30, and instantaneously generates the gas pressure G generated by the rock 51. The rock 51 is moved upward from the open end. In FIG. 4, the ejection state of the gas pressure G ejected from the boulder removing device 1 is shown enlarged by a one-dot chain line.
The rock 51 moved upward is rolled down the slope 50 as shown in FIG.
In addition, when using the several roll removal apparatus 1, as shown, for example in FIG. 6, it installs so that the synthetic | combination vector of the action direction may pass upwards through the center of a rock.

Next, when moving (shifting) in the horizontal direction or the downward direction of the slope, the slope or scaffolding is used so that the direction of the gas pressure passes through the vicinity of the center of the rock and moves in the desired direction.
Moreover, when using the several roll removal apparatus 1, it installs so that the synthetic | combination vector of the action direction may pass the center of a rock, and may become a direction to move.

2) When the rock is rotated Set the rock as far as possible with respect to the center of gravity of the rock and increase the rotational moment.
Moreover, when using the several roll removal apparatus 1, it installs so that it may become a position where the rotational moment of the synthetic | combination vector of the action direction becomes large.

In addition, although the said embodiment demonstrated the case where the open end 11b of the steel pipe 11 was used as a jet outlet, this invention is not limited to this, Gases, such as a bottomed iron pipe and a square tube, can be jetted in a specific direction. Any container can be used. Moreover, an ejection nozzle can also be used like a rocket. Further, a plurality of ejection holes can be provided so that the gas pressure acts on a wide surface.
Moreover, although the said embodiment demonstrated the case where the one ignition tool 20 of the non-explosive composition in which remote electrical ignition was possible was used, this invention is not limited to this, Two or more ignition tools in which remote electrical ignition is possible are carried out. Can be used.

In addition, when using a plurality of rolling stone removing devices 1, it is possible to move or partially crush a larger object by igniting simultaneously or sequentially with a time difference.
Moreover, although the said embodiment demonstrated the case where the non-explosive gas generating agent 30 and the ignition tool 20 of the non-explosive composition in which remote electric ignition was possible were used, this invention is not limited to this, Non-explosive gas generation | occurrence | production Instead of the agent 30, for example, an explosive such as black explosive or a propellant may be used.
Further, instead of the non-explosive composition igniter 20 capable of remote electric ignition, for example, a light guide tube, a lead wire, or an electric ignition ball may be used. However, if the explosive is packed into a steel pipe and operated, a shock wave is generated earlier than the movement of the gas, and not only gas is ejected but also the steel pipe is scattered, which is not preferable.

As described above, according to the present embodiment, the non-explosive gas generating agent 30 and the ignition tool 20 of the ignitable composition are placed in the boulder removing device body (container) 10 in which one end of the bottomed iron pipe 11 is opened. It is installed in the form of being in close proximity to or in contact with 51, ignited by remote control, gas is generated instantaneously, and the rock 51 can be moved by the gas pressure.
Therefore, ancillary facilities other than the holder of the boulder removing device 1 are unnecessary.
In addition, since it is light in weight and easily moved by human power, even a complicated mechanical device can be used.

Further, the boulder removing device 1 transports the boulder removing device main body (container) 10, the non-explosive gas generating agent 30, and the non-explosive composition ignition tool 20 to different sites, and moves or rotates the rock 51. It is possible to adjust the size and dose according to the situation at the site, such as whether or not.
In addition, it is also possible to destroy a part of the rock 51 by increasing the amount of the non-explosive gas generating agent 30 and adjusting the direction of gas ejection with respect to the rock 51.

A rolling stone removing device 1 shown in FIG. 1 is prepared.
In this embodiment, the boulder removing apparatus 1 welds a steel plate 12 having a 50 mm square and a thickness of 3.2 mm to one open end 11a of a steel pipe 11 having an outer diameter of 42 mm, an inner diameter of 34 mm, and a total length of 60 mm, and the other open end. A boulder removing device body (container) 10 in which 11b is a gas outlet, a non-explosive composition ignition tool 20 disposed in the center of the boulder removal device body (container) 10, and a non-explosive composition ignition device 20 A non-explosive gas generating agent 30 filled in a boulder removing device main body (container) 10 disposed in the center, and lead wires (electric wires) 28 of the non-explosive composition ignition tool 20 from the hole 13 to the outside The hole 13 was closed with an epoxy adhesive so that no gas leaked. The hole 13 is closed with an epoxy adhesive so that gas does not leak.

The following experiments were conducted with the amount of filler of the non-explosive gas generating agent 30 set to 30 g, 40 g, and 50 g.
As shown in FIG. 3, a boulder that is 40 kg of hard sandstone was used, and the boulder removal device 1 was set at the lower part of the boulder so that the stress caused by the gas pressure of the boulder removal device 1 passes upward through its center of gravity. The area around the boulders was supported appropriately.
When 40 g of the non-explosive gas generating agent 30 is 40 kg, 40 g of the non-explosive gas generant 30 flies upward by 1.7 cm gas pressure. The pop-out speed at that time was 0.2 m / s. Similarly, when the non-explosive gas generating agent 30 was 50 g, it flew upward at a gas pressure of 3.2 cm. The jumping speed at that time was 0.6 m / s.

When the non-explosive gas generating agent 30 was 50 g and a 30 kg roll, the flying distance was 3.2 cm and the jumping speed was 0.6 m / s. Similarly, when the non-explosive gas generating agent 30 was 50 g, the flying distance was 20 cm and the jumping speed was 1.6 m / s with a 14 kg roll.
Thus, it was confirmed that the non-explosive gas generating agent 30 of only 50 g was allowed to fly upward even with 40 kg of calculus.

  Next, Table 2 shows an example in which a dangerous stone on a slope is lifted by about several centimeters and dropped.

  In the table, the length L of the apparatus is based on a steel pipe 11 having an outer diameter of 42 mm and an inner diameter of 34 mm, but it can be shortened by increasing the inner diameter D and decreasing L / D. Considering the size and combustion performance of the ignition tool 20 having the explosive composition, L / D is preferably about 1 or more. Considering the handling of the device, L / D is preferably about 2 to 6. L / D can be used up to about 10.

1 Rolling stone removal device 10 Rolling stone removal device body (container)
11 Steel pipe 12 Steel plate 13 Hole 20 Non-explosive composition ignition tool 28 Lead wire (electric wire)
30 Non-explosive gas generating agent 40 Remote ignition device 50 Slope 51 Rock

Claims (9)

A container open at one end;
An ignition tool having a non-explosive composition disposed inside the container;
A non-explosive gas generating agent disposed inside the container,
The open end of the container is arranged toward the boulder on the slope, and the gas pressure generated by the combustion of the non-explosive gas generating agent by the ignition with the non-explosive composition is directed toward the boulder. A boulder removal device characterized in that it is ejected more. The boulder removal apparatus according to claim 1,
The non-explosive composition igniter is disposed at the center of the container, subjected to gas leakage prevention treatment, the lead wire is taken out from the side wall of the container, and connected to the remote ignition device via the lead wire. A boulder removal device characterized by that. In the roll removal device according to claim 1 or 2,
A ratio of the length L of the container to the inner diameter D of the container is L / D = 1 to 10, preferably L / D = 2 to 6. When lifting a boulder on a slope,
The gas pressure of the boulder removing device according to any one of claims 1 to 3 is arranged downstream of the boulder so as to eject upward through the center of gravity of the boulder, and the remote ignition device communicating with the boulder removing device A method for removing a calculus, comprising igniting an ignition tool having a non-explosive composition and ejecting a gas pressure generated by the combustion of the non-explosive gas generating agent toward the calculus from an open end of the container. In the method for removing a boulder according to claim 4,
In the case of arranging a plurality of boulder removing devices according to any one of claims 1 to 3, the combined vector of the action direction of the gas pressure of each of the boulder removing devices is arranged so as to face upward through the center of the boulder. A method for removing tumbles. When moving a boulder on a slope,
The remote ignition which arrange | positions so that the gas pressure of the boulder removal apparatus in any one of Claim 1 thru | or 3 may spout in the direction which wants to move through the center of the boulder, and communicates with the said boulder removal apparatus on the said slope and a scaffold. A calculus removal method, comprising: igniting an igniter having the non-explosive composition by means of an apparatus, and causing gas pressure generated by combustion of the non-explosive gas generating agent to be ejected from the open end of the container toward the calculus. In the method for removing boulders according to claim 6,
When a plurality of boulder removing devices according to any one of claims 1 to 3 are arranged, the combined vector of the gas pressure action directions of each of the boulder removing devices passes through the center of the boulder and is in the direction in which it is desired to move. A method for removing a boulder, characterized in that When rotating the rolling stone on the slope,
4. A remote controller for disposing the boulder removal device according to claim 1 at a position farther from the boulder than the boulder removal device with respect to the center of gravity of the boulder so as to increase the rotation moment of the boulder. A calculus removing method, comprising: igniting an igniter having the non-explosive composition by an igniter and causing gas pressure generated by combustion of the non-explosive gas generating agent to be ejected from an open end of the container toward the calculus. In the method for removing a boulder according to claim 8,
When a plurality of boulder removing devices according to any one of claims 1 to 3 are arranged, the boulder removing devices are arranged at positions where the rotational moment of the combined vector in the gas pressure acting direction of each of the boulder removing devices becomes large. Rolling stone removal method.

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