Burning rock bench blasting drilling and cement paste injection wall protection device

Abstract

The utility model relates to a burning rock bench blasting drilling and cement paste injection wall protecting device which comprises a water storage device, a high-pressure cleaning machine water pump and a high-pressure cleaning machine water pump control system. The water storage device comprises a water tank, a water level oil pointer, a water filling nozzle, a water filling nozzle filter screen, a dustproof cover, a water outlet, a water drain valve, a water storage device water return pipeline and a water tank and drilling machine connecting device; the high-pressure cleaning machine water pump comprises a high-pressure cleaning machine water pump main machine, a high-pressure cleaning machine placing platform, a water inlet pipeline, a water outlet pipeline, a hydraulic pipeline, a high-pressure cleaning machine water return pipeline and a hydraulic control module. According to the device, in the drilling process of a drilling machine, clean and non-corrosive water in a water storage device is pressurized and injected into high-pressure air discharged by an air compressor of the drilling machine through a high-pressure cleaning machine, the water is atomized into water mist in the high-pressure air, and the water mist is fully combined with rock dust during drilling and deslagging, so that the rock dust is condensed into slurry to be attached to the hole wall, and a slurry protection wall layer of a blast hole is formed; and hole wall collapse and drill jamming can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the open pit mine blasting construction field, specifically disclose a kind of burnt and altered rock step blasting drilling cement slurry wall protection device. BACKGROUND

[0002] At present, open pit coal mining method is mainly step drilling and blasting, but due to spontaneous combustion of some coal seam, the overlying rock system and surrounding rock of coal seam are burnt and altered, which makes the originally plastic rock become brittle and easy to break, the rock mass presents a fragmented structure, and the structure presents a sheet, plate, fragment, wedge and rhombic body, etc., causing the rock mass to be broken, brittle and unstable, which makes the drilling process difficult, and a horn hole is easily formed, the hole wall is easy to collapse during drilling, the drill is stuck, the hole diameter is enlarged, the drilling efficiency is low, the depth is insufficient, and normal blast hole cannot be formed for charging and blasting, which makes it easy to have "hard side" and "bottom pull" phenomenon after blasting, and the large block rate is high, so secondary blasting or secondary small solution is needed, thus the drilling cost and blasting cost are generally increased. The better solution to the above technical problems is to add mud protection liquid to form a mud wall during drilling. Therefore, ZL2023103142319 discloses an open pit coal burnt and altered rock blast hole protection slurry and its preparation method and application. Although this method can solve the above problems to some extent, it needs to prepare the hole protection slurry in advance and the preparation process is complex, which increases the construction difficulty and cost to some extent. Therefore, under the condition of not increasing the construction difficulty and cost, how to solve the problem of difficult drilling in open pit coal burnt and altered rock step blasting has become one of the technical problems to be solved. SUMMARY

[0003] The utility model discloses a kind of burnt and altered rock step blasting drilling cement slurry wall protection device, which is designed to solve the problem of difficult drilling in burnt and altered rock step blasting. The device is installed on the drilling machine, and clean water without corrosion effect in the water storage device is injected into the drilling machine drill stand outlet pipeline through the high-pressure cleaning machine water pump. During drilling, water and high-pressure gas mist discharged by the drilling machine air compressor are atomized to form water mist. When the drilling machine impactor discharges slag, water mist and rock dust are fully combined to make rock dust coagulate into mud and stick to the hole wall, forming a "mud" wall protection layer.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions.

[0005] A cement slurry injection and wall protection device for blasting boreholes in sintered rock steps is characterized by comprising a water storage device, a high-pressure washer pump, and a high-pressure washer pump control system; the water storage device includes a water tank, a water level indicator, a water inlet, a water inlet filter, a dust cover, a water outlet, a drain valve, a water storage device return pipe, and a connection device between the water tank and the drilling rig; the high-pressure washer pump includes a high-pressure washer pump main unit, a high-pressure washer placement platform, an inlet pipe, an outlet pipe, hydraulic lines, a high-pressure washer return pipe, and a hydraulic control module; the high-pressure washer pump control system includes a high-pressure washer pump button, water inlet and outlet regulating valves, water return regulating valves, a drilling rig drill frame outlet pipe, a drilling rig drill frame return pipe, and a drilling rig drill frame.

[0006] Preferably, the water tank in the water storage device is a cylindrical hollow tank welded from stainless steel, with a volume of 1000L to 1500L, a tank thickness of 1cm to 1.5cm, an inner diameter of 1m to 1.2m, and a tank height of 1.3m to 1.9m. The stainless steel material used is 304 or 316 stainless steel, but is not limited to similar materials.

[0007] Preferably, a water tank is welded to the rear of the drilling rig and connected to the drilling rig, and the water tank and the drilling rig are fixed together by reinforced screws and nuts.

[0008] Preferably, the diameter of the water tank inlet is 5cm to 7cm.

[0009] Preferably, the bottom diameter of the filter screen at the water tank inlet is 4cm to 6cm, and the top diameter is 6cm to 8cm.

[0010] The top of the filter screen at the water inlet is connected to the dust cover at the water inlet of the water storage device by a thread.

[0011] Preferably, a water level indicator is installed on the outer wall of the water tank at a depth of 100L, and water should be added in time when the water level is less than 100L.

[0012] Preferably, a high-pressure washer water mounting platform is welded to the bottom of the outer wall of the water tank, and the high-pressure washer water pump chassis is connected and fixed to the mounting platform using reinforced screws and nuts.

[0013] Further preferred features include an outlet pressure of 6 MPa, a flow rate of 9-10 L / min, a power of 1.3 kW, and a voltage of 220 V for the high-pressure washer.

[0014] Preferably, the high-pressure cleaner's water pump control system is located in the drilling rig's cab, and the water volume is controlled by adjusting the inlet and outlet water regulating valves.

[0015] Preferably, in cold northern regions, to prevent the water inside the tank from freezing, an electric heater can be installed inside the tank, as long as the installation method is appropriate.

[0016] The beneficial effects of this utility model are that the device has a simple operation process, low drilling rig modification cost, and solves the technical problems of easy hole wall collapse, stuck drill, enlarged hole diameter, low drilling efficiency, insufficient depth, and inability to form normal blast holes for charging and blasting during drilling. It can effectively prevent hole wall collapse, improve drilling success rate and drilling efficiency, significantly improve blasting effect, eliminate the need for secondary blasting or secondary reduction, reduce drilling cost in sintered rock areas to a certain extent, and reduce drilling and blasting construction cost and labor intensity to a certain extent. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the drilling and cement slurry injection wall protection device of this utility model.

[0018] Figure 2 This is a schematic diagram showing the connection between the water inlet filter and the dust cover of this utility model.

[0019] Figure 3 This is a schematic diagram of the connection device between the water tank and the drilling rig.

[0020] In the diagram, there are: water storage device (1), high-pressure washer water pump (2), high-pressure washer water pump control system (3); water tank (4), water level indicator (5), water inlet (6), water inlet filter screen (7), dust cover (8), water outlet (9), drain valve (10), water storage device return water pipe (11), water tank and drilling rig connection device (12); high-pressure washer water pump host (13), high-pressure washer placement platform (14), water inlet pipe (15), water outlet pipe (16), hydraulic pipeline (17), high-pressure washer return water pipe (18), hydraulic control module (19); high-pressure washer water pump button (20), water inlet and outlet regulating valve (21), water return regulating valve (22), drilling rig drill frame water outlet pipe (23), drilling rig drill frame return water pipe (24), and drilling rig drill frame (25). Detailed Implementation

[0021] The embodiments of this utility model are described in detail below, with examples of the embodiments shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, but are not intended to limit this utility model to the scope of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0022] See the example. Figure 1 , Figure 2 , Figure 3 A device for injecting cement grout for wall protection in blasting boreholes of sintered rock steps is characterized by the following installation and operation steps:

[0023] 1. The specific installation steps are as follows:

[0024] a. Constructing the water storage device. The water tank is a cylindrical hollow tank welded from 304 stainless steel, with a volume of 1200L, a tank thickness of 1.5cm, an inner diameter of 1m, and a height of 1.5m. A 6cm diameter water inlet is made at the top of the tank, 0.2m from the edge, and a 6cm diameter water outlet is made at the bottom of the tank, 0.2m from the edge. The filter screen is made of stainless steel filter cylinder, 10cm high, with a top 4cm high and 7cm diameter section that is clipped above the water inlet, and a bottom 6cm high and 5cm diameter section that is inserted into the water inlet. The top of the filter screen is threaded to the dust cover. A drain valve is installed at the bottom outlet of the water tank. The water tank is fixed to the rear of the drilling rig using reinforced screws and nuts and a welding connection device.

[0025] b. Fabrication of the high-pressure washer water pump. The high-pressure washer water pump platform is fixed to the outer wall of the water tank by welding, and the high-pressure washer water pump unit is fixed to the high-pressure washer platform by threaded connection. The outlet pressure of the high-pressure washer water pump is 6MPa, the flow rate is 9.5L / min, the power is 1.3kW, and the voltage is 220V.

[0026] c. Install a high-pressure washer water pump control system. The high-pressure washer water pump control system includes high-pressure washer water pump control buttons, water inlet regulating valve, and return water regulating valve.

[0027] d. In cold northern regions, to prevent the water in the tank from freezing, an electric heater can be installed inside the tank, provided that the installation method is appropriate.

[0028] 2. The specific operating method is as follows:

[0029] a. Fill the water tank with water through the water inlet on top of the water tank.

[0030] b. Before the drilling rig impactor starts working, adjust the water return regulating valve to maintain an appropriate opening, and turn on the high-pressure cleaner water pump control button to start the high-pressure cleaner water pump.

[0031] c. During the drilling process, pay close attention to the dust situation at the borehole opening. If there is a lot of dust, the water output of the high-pressure cleaner should be increased appropriately. The outlet valve of the water regulating valve can be opened appropriately to increase the water flow so that the rock dust and water mist can be fully combined and adhere tightly to the borehole wall to form mud wall protection. Adjust the water outlet valve according to the actual situation of the borehole in the sintered rock to avoid poor mud wall protection effect and to prevent water waste.

[0032] d. During the connection and disconnection of drill rods and the relocation of the machine, turn off the water pump or close the outlet regulating valve to save water.

[0033] e. If there is abundant groundwater during drilling, the water pump can be turned off to save water.

[0034] f. After drilling is completed, the high-pressure cleaner water pump must be turned off before leaving get off work.

[0035] g. Always monitor the water level in the tank. When the water level drops to the level indicated by the oil gauge at the bottom of the tank, add water promptly. Never turn on the high-pressure cleaning pump when the water level in the tank is low or empty.

Claims

1. A burnt rock step blasting cementing slurry drilling wall protection device, characterized in that, The utility model relates to a high-pressure cleaning machine water pump control system, including water storage device (1), high-pressure cleaning machine water pump (2), high-pressure cleaning machine water pump control system (3), water storage device (1) contains water tank (4), water level oil mark (5), water inlet (6) water inlet filter screen (7), dust cover (8), water outlet (9) drain valve (10), water storage device backwater pipeline (11), water tank and drilling rig connecting device (12), high-pressure cleaning machine water pump (2) contains high-pressure cleaning machine water pump host computer (13) high-pressure cleaning machine placement platform (14), water inlet pipeline (15), water outlet pipeline (16) hydraulic pipeline (17) high-pressure cleaning machine backwater pipeline (18), hydraulic control module (19), high-pressure cleaning machine water pump control system (3) contains high-pressure cleaning machine water pump button (20), water quantity water inlet and water outlet regulating valve (21), water quantity backwater regulating valve (22), drilling rig derrick water outlet pipeline (23), drilling rig derrick backwater pipeline (24), drilling rig derrick (25).

2. The step drilling and cementing device for the burning formation according to claim 1, characterized in that, The water tank (4) is a cylindrical hollow tank body welded by stainless steel, with a volume of 1000L-1500L, a thickness of 1cm-1.5cm, an inner diameter of 1m-1.2m, and a height of 1.3m-1.9m.

3. The step drilling and cementing device for the step blasting of the burning formation according to claim 2, characterized in that, The stainless steel material is 304 or 316 stainless steel, but is not limited to similar materials.

4. The step drilling and cementing device for the step blasting of the burning formation according to claim 2, characterized in that, The water tank (4) is fixed to the rear of the drilling rig by a reinforced screw and a nut through the connecting device (12).

5. The step drilling and cementing device for the burning formation according to claim 1, characterized in that, The water inlet (6) has a diameter of 5cm-7cm.

6. The step drilling and cementing device for the step blasting of the burning formation according to claim 1, characterized in that, The water inlet filter screen (7) has a bottom diameter of 4cm-6cm and a top diameter of 6cm-8cm. The top of the water inlet filter screen (7) is threadedly connected with the dust cover (8).

7. The step drilling and cementing device for the step blasting of the burning formation according to claim 1, characterized in that, The water level oil mark (5) is arranged at 100L of the outer wall of the water tank, and water should be added in time when the water quantity is less than 100L.

8. The step drilling and cementing device for the step blasting of the burning formation according to claim 1, characterized in that, The high-pressure cleaning machine water pump placement platform (14) and the outer wall of the water tank (4) are fixed by welding, and the high-pressure cleaning machine water pump host computer (13) and the high-pressure cleaning machine placement platform (14) are fixed by screw connection.

9. The step drilling and cementing device for the burning formation according to claim 1, characterized in that, The outlet pressure of the high-pressure cleaning machine water pump is 6MPa, the flow rate is 9L-10L / min, the power is 1.3kW, and the voltage is 220V.

10. The step drilling and cementing device for the burning formation according to claim 1, characterized in that, The high-pressure cleaning machine water pump control system (3) is arranged in the drilling rig cab and controls the water quantity by adjusting the water inlet regulating valve and the backwater regulating valve.

11. The step drilling and cementing device for the burning formation according to claim 1, characterized in that, In cold northern areas, the water in the water tank (4) can be prevented from freezing, and an electric heater can be additionally arranged in the water tank in a reasonable manner.

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