A convenient and mobile dust suppression device for mining

Abstract

The invention discloses a dust reduction device for mine development that is convenient to move, relates to the field of mine mining technology, comprises a data acquisition module, a mining analysis module, a folding dust reduction device, a dynamic adjustment module and a safety warning module: the data acquisition module is installed inside the mine tunnel near the tunnel excavation drilling position, and is used to collect daily air data of the mine tunnel and air data inside the tunnel during tunnel excavation drilling; its technical points are: providing a dust reduction device for mine development that is convenient to move, and before excavation drilling, combining the tunnel excavation drilling plan, the tunnel excavation drilling data of the previous time and the daily air data of the mine tunnel to predict the real-time dust content in the next excavation process, and formulating a preliminary dust reduction strategy according to the real-time dust content, taking precautions in advance, and making real-time adjustments according to specific conditions, effectively reducing the loss of dust reduction related resources while ensuring the dust reduction and dust isolation effect, having good use effect and having good use prospects.

Description

Technical Field

[0001] The invention relates to the technical field of mining, in particular to a dust suppression device which is convenient to move and is used in mining. Background Art

[0002] Mines include coal mines, metal mines, non-metallic mines, building materials mines and chemical mines, etc. Mines refer to independent production and operation units that mine ores with a certain mining boundary. Mines mainly include one or more mining workshops and some auxiliary workshops. Most mines also include ore dressing plants.

[0003] With the continuous development of economy and society, the demand for mineral resources in human society is increasing. However, after hundreds of years of large-scale resource exploitation, the mineral resources in the shallow part of the surface are gradually exhausted. In order to ensure the supply of mineral resources, the development of mineral resources is gradually developing towards the deep part of the surface.

[0004] In the process of deep mining from the surface, underground tunnels are inevitably involved. In the early stages of underground tunnel construction, a large amount of dust will be generated due to the need to drill holes continuously, and this dust will affect the construction of the preceding tunnels. In order to reduce the impact of drilling dust, dust reduction devices are usually installed inside the underground tunnels near the excavation drilling location.

[0005] The existing application publication number is CN115779605A, and the name is a dust suppression spray device for use in coal mine tunnels. The present invention relates to the field of dust suppression spray technology, including a tunnel, a spray device is arranged in the tunnel, and a swing mechanism is arranged on one side of the spray device. The swing mechanism is composed of a hydraulic cylinder, a T-block, a connecting block, a vertical plate, a vertical rod, a connecting rod, an inclined rod and a connecting rod. The fixed end of the hydraulic cylinder is fixedly connected to the inner wall of the tunnel, and the movable end of the hydraulic cylinder is fixedly connected to the T-block. The connecting block is located below the T-block, and a T-slot is provided on the top surface of the connecting block. Both sides of the T-slot are connected to the outside world. The T-block is located in the T-slot and can move along the T-slot. The present invention has a reasonable structural design and is easy to use. It can be convenient to collect dust after spraying, prevent dust from being raised again after drying, and can adjust the angle of the spray device, so as to facilitate all-round spraying of the interior of the tunnel.

[0006] However, according to the above content combined with the prior art, the central solution of the patent recorded in the above patent is to set up a swingable spray component and a collection component, which can reduce dust and collect the dust generated by daily operation inside the tunnel.

[0007] However, the above solution has major defects in actual use. It adopts a fixed design and is suitable for dust reduction in a fixed local area of ​​the tunnel. It cannot effectively isolate dust, so it cannot be used in the scene where dust from tunnel excavation and drilling spreads rapidly.

[0008] In addition, the patent number is CN106285764A, and the patent name is a tunnel dust reduction device. The solution recorded in the patent is also a fixed-point spray, which is fixed on the surface of the tunnel, but it is inconvenient to disassemble and assemble (the dust reduction position needs to move synchronously with the tunnel excavation). It adopts a large-area spray method to achieve dust reduction and dust isolation. In order to avoid the rapid spread of dust during tunnel excavation and drilling, and reduce the impact of air shock on the dust reduction effect, it starts the water pump at full power during the excavation process, which will cause a waste of water resources or atomization resources, and it is usually set at a distance from the tunnel excavation drilling hole, and the effect is limited, which does not meet people's use requirements. For this reason, we have developed a dust reduction device for mine excavation that is easy to move. Summary of the invention

[0009] 1. Technical issues to be solved

[0010] In view of the deficiencies in the prior art, the present invention provides a dust reduction device that is easy to move for use in mines, which can supervise the storage amount of raw grains in the warehouse and monitor the storage environment of the warehouse, and provide timely feedback when an abnormality occurs. There is no need for manual review and comparison of data, thus reducing the workload of operators and helping relevant technical personnel to better supervise the raw grains. It has good use effect and has a good prospect for use.

[0011] (II) Technical solution

[0012] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0013] A dust suppression device for mine development that is convenient to move, including a data acquisition module, a mining analysis module, a folding dust suppression device, a dynamic adjustment module and a safety warning module:

[0014] The data acquisition module is installed inside the mine tunnel near the tunnel excavation drilling position, and is used to collect daily air data in the mine tunnel and air data inside the tunnel during tunnel excavation drilling;

[0015] Mining analysis module: used to obtain the tunnel excavation drilling plan and the tunnel excavation drilling data of the last time, and formulate a preliminary dust reduction strategy based on the daily air data of the mine tunnel;

[0016] The folding dust suppression device is installed inside the mine tunnel near the tunnel excavation drilling position, and is used to reduce dust inside the tunnel according to the preliminary dust suppression strategy;

[0017] Dynamic adjustment module: used to obtain the air data inside the tunnel during tunnel excavation and drilling, formulate an adjustment plan based on the real-time air data inside the tunnel, and control the folding dust suppression device to implement the adjustment plan;

[0018] Safety warning module: used to obtain and analyze the data collected by the data acquisition module and the working data of the folding dust reduction device, calculate the air risk value Kqfxz based on the data collected by the acquisition module, compare the air risk value with the preset safety threshold, and issue a warning when the air risk value is higher than the safety threshold and the working data of the folding dust reduction device is abnormal.

[0019] Preferably, the daily air data of the mine tunnel and the air data inside the tunnel during tunnel excavation and drilling include dust content, oxygen concentration, carbon monoxide concentration, carbon dioxide concentration, sulfur dioxide concentration, methane concentration and nitrogen oxide concentration in the air.

[0020] Preferably, the folding dust suppression device comprises a movable box, a folding bracket and a dust suppression frame:

[0021] The lower end of the mobile box is equipped with lifting casters, and the upper end surface of the mobile box is equipped with drive boxes near both sides;

[0022] There are two groups of folding brackets, the lower ends of which are fixedly connected to the output shaft of the motor inside the driving box, and the motor drives the folding brackets to unfold or fold;

[0023] The two sides of the lower end surface of the dust suppression frame are rotatably connected to the upper end of the folding bracket through hinges, and the lower end surface of the dust suppression frame is equipped with a plurality of dust suppression components;

[0024] Wherein, a liquid conveying component is installed inside the mobile box, and the liquid conveying component is connected with several groups of dust reduction components through pipelines.

[0025] Preferably, the side end surface of the folding bracket facing the laneway and the side end surface of the dust suppression frame facing the top of the laneway are both provided with installation grooves, and a plurality of groups of blocking members are arranged in the installation grooves;

[0026] The blocking member includes a blocking column and a spring. One end of the spring and the blocking column are both located in the installation groove. The blocking column is connected to the inner bottom surface of the installation groove through the spring. The end of the blocking column is a regular hexagon, and adjacent blocking columns are arranged in a close fit.

[0027] Preferably, a collection rack for collecting liquid sprayed from the dust reduction assembly is provided in the middle of the upper end surface of the mobile box, and a group of the front end surfaces of the collection racks and the upper end surface of the mobile box are provided with strip openings, on which filter nets are installed, and the liquid on the collection racks passes through the filter nets and flows into the interior of the mobile box.

[0028] Preferably, a hollow blocking bar is installed on the dust reduction frame at the outside of the dust reduction component, an air outlet is provided on the lower end surface of the hollow blocking bar, and an air pump component connected to the hollow blocking bar through a pipeline is arranged inside the movable box.

[0029] Preferably, the steps of formulating a preliminary dust reduction strategy by the mining analysis module are as follows:

[0030] Obtain the tunnel excavation drilling plan, the tunnel excavation drilling data of the last time, and the daily air data of the mine tunnel;

[0031] The dust content inside the tunnel during the excavation and drilling process is predicted based on the acquired data. The specific prediction formula is:

[0032]

[0033] Where Hcl is the predicted dust content inside the tunnel during the excavation drilling process, B is the predicted number of holes in the excavation drilling process, K is the number of holes in the last excavation drilling process, Schc is the dust content in the last excavation drilling process, Rchc is the daily dust content in the mine tunnel, Dzxs is the difference in the influence coefficient of soil at different excavation drilling depths on dust content, A is a constant coefficient, 1<A<1.2;

[0034] A preliminary dust reduction strategy for the liquid conveying component is formulated based on the predicted dust content. When formulating the preliminary dust reduction strategy, the power of the liquid conveying component is calculated. The calculation formula for the power of the liquid conveying component is as follows;

[0035]

[0036] Wherein, Ycgl is the calculated power of the liquid conveying component, and Ssgl is the power data of the liquid conveying component during the last excavation and drilling process.

[0037] Preferably, an adjustment plan is formulated based on the real-time air data inside the lane, including power adjustment of the air pump component and power adjustment of the liquid delivery component;

[0038] The steps for power adjustment of the air pump assembly are as follows:

[0039] The real-time change rate of dust content in the additional auxiliary air is calculated based on the air data inside the tunnel during tunnel excavation and drilling. The calculation formula for the change rate of dust content in the air is as follows:

[0040]

[0041] In the formula, Hcbhl t is the real-time change rate of dust content in the additional auxiliary air at time t, Hcl t is the dust content in the tunnel air at time t, HCl t-1 is the dust content in the tunnel air at time t-1, and T is the interval time for the data acquisition module to collect data;

[0042] The power of the air pump assembly is calculated based on the real-time change rate of the dust content of the additional auxiliary air. The specific calculation formula is as follows;

[0043]

[0044] In the formula, Qbgl is the calculated power of the air pump assembly, jcgl is the daily working power of the air pump assembly in the lane, C is the real-time change rate of the dust content of the additional auxiliary air when the air pump assembly needs additional assistance, and D is the proportional coefficient between the adjusted operating power of the air pump assembly and the real-time change rate of the dust content of the additional auxiliary air;

[0045] Adjust the power of the air pump assembly to the calculated power.

[0046] Preferably, the steps of power adjustment of the liquid delivery assembly are as follows:

[0047] The real-time power of the liquid delivery component is calculated based on the air data inside the tunnel during tunnel excavation and drilling. The specific calculation formula is as follows:

[0048]

[0049] Where Ycgl′ is the real-time power of the liquid delivery component, and Hcl′ is the real-time dust content inside the tunnel during tunnel excavation and drilling;

[0050] Calculating the difference between the real-time power of the liquid delivery component and the predicted power of the liquid delivery component;

[0051] If Ycgl-Ycgl′≤0, adjust the power of the liquid delivery component to Ycgl′;

[0052] If Ycgl-Ycgl′>0, the difference between the real-time power of the liquid delivery component and the predicted power of the liquid delivery component is compared with the preset upper limit value Sxz;

[0053] If Ycgl-Ycgl′≤Sxz, the power of the liquid delivery component is not adjusted;

[0054] If Ycgl-Ycgl′>Sxz, the power of the liquid delivery component is adjusted to Ycgl′.

[0055] Preferably, the calculation formula of the air risk value Kqfxz is as follows:

[0056]

[0057] In the formula, when Nd i -Bz i When <0, take Nd i -Bz i =0, Yqld is the monitored oxygen concentration, Dqnd is the average oxygen concentration in the area, Q is the number of data types monitored except oxygen, Nd iis the concentration of the monitored gas, Bz i is the average concentration of the i-th gas in the area, θ is the weight coefficient of oxygen, and θ i is the weight coefficient of the i-th gas.

[0058] (III) Beneficial effects

[0059] The present invention provides a dust suppression device for mining which is convenient to move and has the following beneficial effects:

[0060] 1. The present invention records a dust suppression device that is convenient to move for use in mining, wherein the present invention records a folding dust suppression device. The folding dust suppression device adopts a mobile design, and its main body can be folded, so that the volume of the entire device can be reduced, thereby facilitating the movement of the folding dust suppression device. Moreover, the folding dust suppression device is convenient to fold and unfold, can be easily installed, is convenient to use as a whole, and has good prospects for use.

[0061] 2. The present invention records a dust reduction device for use in mining that is easy to move. Sealing parts are installed on the folding bracket and the dust reduction frame. When in use, the sealing columns in the sealing parts are staggered, and the sealing columns can move independently. The blocking columns can fit tightly with the inner wall of the tunnel, thereby increasing the dust isolation effect of the dust reduction device used in the entire mining, thereby effectively preventing dust from spreading and interfering with other areas of the tunnel, improving the safety of the entire tunnel, and having good prospects for use.

[0062] 3. The present invention records a dust reduction device that is convenient to move for use in mining. It conducts a comprehensive analysis of tunnel excavation, and before drilling, it combines the tunnel excavation drilling plan, the tunnel drilling data of the previous excavation, and the daily air data of the mine tunnel to predict the real-time dust content during the next excavation process, and formulates a preliminary dust reduction strategy based on the real-time dust content, which has the effect of early prevention, and makes real-time adjustments based on specific circumstances. While ensuring the dust reduction and isolation effects, it can effectively reduce the loss of dust reduction-related resources, and the overall use effect is good, with good prospects for use.

[0063] 4. The present invention records a dust reduction device that is convenient to move and used in mining. It adjusts its strategy in real time according to specific circumstances, and achieves dust isolation and dust reduction by combining air curtain and water curtain. The water curtain is used to reduce the impact force of dust gas, and the integrity of the water curtain can be ensured, thereby improving the dust reduction effect. Moreover, the air curtain can protect the dust reduction component during daily use, maintain the spray effect of the dust reduction component, ensure the dust reduction effect of the dust reduction component, and at the same time extend the service life of the dust reduction component. The overall use effect is good and has a good prospect for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1This is an overall use state diagram of a dust suppression device for use in mining that is convenient to move according to the present invention;

[0065] Figure 2 This is a structural block diagram of a dust suppression device for use in mining that is convenient for movement according to the present invention;

[0066] Figure 3 This is a diagram showing the use state of a foldable dust suppression device in a dust suppression device convenient for mobile mining of the present invention;

[0067] Figure 4 It is a rear view of a foldable dust suppression device in a use state of a dust suppression device convenient for movement in mining according to the present invention;

[0068] Figure 5 A diagram showing a folded state of a foldable dust suppression device in a conveniently movable dust suppression device for mining according to the present invention;

[0069] Figure 6 It is a rear view of a folded dust suppression device in a folded state in a dust suppression device convenient for movement in mining according to the present invention;

[0070] Figure 7 It is a partial structural diagram of a folding dust suppression device in a dust suppression device convenient for movement in mining according to the present invention;

[0071] Figure 8 This is a structural diagram of a foldable dust suppression device in a conveniently movable dust suppression device for mining according to the present invention from other angles;

[0072] Fig. 9 The present invention is a dust suppression device for mining that is convenient to move Figure 7 A magnified view of the structure at center A;

[0073] Fig.10 This is a cross-sectional view of a common tunnel.

[0074] In the figure: 1. air pump assembly; 2. mobile box; 3. lifting casters; 4. folding bracket; 5. dust suppression frame; 6. blocking column; 7. collecting frame; 8. strip mouth; 9. filter screen; 10. hollow blocking strip; 11. air outlet; 12. nozzle; 13. guide cover. DETAILED DESCRIPTION

[0075] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0076] Research reasons

[0077] The dust suppression devices used in the existing tunnels are all fixed-point dust suppression, which are mainly used to reduce dust during later use. During tunnel excavation, a large amount of dust will be generated when drilling. Although some ventilation devices and water guns are used to spray water to suppress dust, the dust diffuses quickly in the process and some dust leaks out. Therefore, at this stage, support frames and other auxiliary equipment are generally installed at a distance from the tunnel, and those near the tunnel excavation position are left until later construction. As a result, the tunnel construction period is relatively long, the preliminary steps of mining are relatively long, and the mining efficiency is not high.

[0078] In order to improve this method, temporary blocking was considered to isolate the dust in the early stage. However, this method would cause the temperature at the tunnel excavation location to rise rapidly and cause a sharp increase in dust, increasing the overall safety risk.

[0079] Then, the solution of vacuuming is adopted. However, in actual use, there is a lot of dust, and the space in the alley is limited. The dust suction capacity of small vacuuming equipment is limited, and the adsorbed dust needs to be dealt with every once in a while, which is generally troublesome.

[0080] Finally, based on the existing dust reduction device, further research and development was conducted to design a dust reduction device that can be moved, easily installed and positioned, and can achieve dust reduction and dust isolation.

[0081] Study plan

[0082] A dust suppression device for mining that is convenient to move, such as Figure 1-10 As shown, it includes data acquisition module, mining analysis module, folding dust suppression device, dynamic adjustment module and safety warning module:

[0083] The data acquisition module is installed inside the mine tunnel near the tunnel excavation drilling position, and is used to collect daily air data in the mine tunnel and air data inside the tunnel during tunnel excavation drilling;

[0084] The daily air data of mine tunnels and the air data inside tunnels during tunnel excavation and drilling include dust content, oxygen concentration, carbon monoxide concentration, carbon dioxide concentration, sulfur dioxide concentration, methane concentration and nitrogen oxide concentration in the air.

[0085] The data acquisition module uses corresponding sensors to collect data, such as Figure 1 As shown, it is installed between the folding dust suppression device and the drilling position. When the data is detected, there is a certain time between the dust and the folding dust suppression device. This time is used for calculation and adjustment of the equipment power, thereby achieving a real-time adjustment effect.

[0086] In addition to dust sensors, other sensors are selected according to the characteristics of the mining area. For example, if natural gas may exist at the location, a methane concentration sensor must be installed. If the tunnel is deep, an oxygen concentration sensor, a carbon dioxide sensor, etc. must be installed.

[0087] Mining analysis module: used to obtain the tunnel excavation drilling plan and the tunnel excavation drilling data of the last time, and formulate a preliminary dust reduction strategy based on the daily air data of the mine tunnel;

[0088] The steps for the mining analysis module to develop a preliminary dust reduction strategy are as follows:

[0089] Obtain the tunnel excavation drilling plan, the tunnel excavation drilling data of the last time, and the daily air data of the mine tunnel;

[0090] The drilling data of the last excavation in the tunnel is close to that of this drilling, their soil quality is similar, their drilling time is close, and the amount of dust generated is similar. Therefore, a prediction can be made based on the drilling data of the last excavation in the tunnel.

[0091] Usually the last excavation drilling data of the tunnel is within a week, most of which is the previous working day.

[0092] The dust content inside the tunnel during the excavation and drilling process is predicted based on the acquired data. The specific prediction formula is:

[0093]

[0094] Where Hcl is the predicted dust content inside the tunnel during the excavation drilling process, B is the predicted number of holes in the excavation drilling process, K is the number of holes in the last excavation drilling process, Schc is the dust content in the last excavation drilling process, Rchc is the daily dust content in the mine tunnel, Dzxs is the difference in the influence coefficient of soil at different excavation drilling depths on dust content, A is a constant coefficient, 1<A<1.2;

[0095] Schc-Rchc is the dust content added during drilling, A K (A to the Kth power) is the cumulative effect of the number of equipment. The more holes are drilled, the more limited the dust reduction speed of the original ventilation equipment and dust removal equipment. Therefore, compared with ordinary single-location drilling, more dust is generated.

[0096] For example, the last drilling depth was 10 meters, and the coefficient of influence of the soil on the dust content was A1. The drilling depth of this excavation is 11 meters, and the coefficient of influence of the soil on the dust content is A2, Dzxs=A2-A1.

[0097] The calculated dust content in the tunnel air generated by a single borehole is: The dust content of the tunnel air generated by B equipment, In order to consider the dust content in the tunnel air after the effects of ventilation equipment and dust removal equipment, In order to consider the dust content in the tunnel air with different soil quality, (A to the power of B) + Rchc is the actual dust content in the tunnel air. This method of calculation is more accurate.

[0098] The power Ycgl of the liquid delivery component calculated when predicting Hcl and the preliminary dust reduction strategy in this application is an array, which uses data of corresponding time at different times during calculation. This is clear to those skilled in the art, so no further description will be given.

[0099] When drilling holes in tunnels, in order to ensure long-term operation of the equipment, intermittent drilling is adopted, that is, drilling is carried out simultaneously, and then the equipment stops for a period of time to dissipate heat. During the heat dissipation period, the original ventilation equipment and dust removal equipment can achieve most of the dust reduction at the tunnel drilling location (one is to reduce the working temperature of the equipment, and the other is to maintain the working environment and avoid an overly harsh environment, thereby protecting the health of relevant technical personnel).

[0100] Therefore, the above method can be used to calculate and predict the dust content inside the tunnel during the excavation and drilling process during construction.

[0101] A preliminary dust reduction strategy for the liquid conveying component is formulated based on the predicted dust content. When formulating the preliminary dust reduction strategy, the power of the liquid conveying component is calculated. The calculation formula for the power of the liquid conveying component is as follows;

[0102]

[0103] Wherein, Ycgl is the calculated power of the liquid conveying component, and Ssgl is the power data of the liquid conveying component during the last excavation and drilling process.

[0104] The higher the power of the liquid conveying component, the greater the water supply, so the denser the water curtain produced by the dust reduction component, and the better the dust reduction effect.

[0105] The folding dust suppression device is installed inside the mine tunnel near the tunnel excavation drilling position, and is used to reduce dust inside the tunnel according to the preliminary dust suppression strategy;

[0106] Dynamic adjustment module: used to obtain the air data inside the tunnel during tunnel excavation and drilling, formulate an adjustment plan based on the real-time air data inside the tunnel, and control the folding dust suppression device to implement the adjustment plan;

[0107] According to the real-time air data inside the lane, an adjustment plan is formulated, including power adjustment of the air pump component 1 and power adjustment of the liquid delivery component;

[0108] The steps of power adjustment of the air pump assembly 1 are as follows:

[0109] The real-time change rate of dust content in the additional auxiliary air is calculated based on the air data inside the tunnel during tunnel excavation and drilling. The calculation formula for the change rate of dust content in the air is as follows:

[0110]

[0111] In the formula, Hcbhl t is the real-time change rate of dust content in the additional auxiliary air at time t, Hcl t is the dust content in the tunnel air at time t, HCl t-1 is the dust content in the tunnel air at time t-1, and T is the interval time for the data acquisition module to collect data;

[0112] The faster the real-time change rate of the additional auxiliary air dust content fluctuates, the more sharply the dust content increases. During normal drilling, the dust content increases slowly as the drilling progresses. However, when drilling to the point where a stone falls, it will hit the ground and bump up the dust on the ground, causing the dust to increase. At the same time, the airflow generated will drive the dust-laden air to move faster, indicating that the gas flow is accelerated. In order to prevent the air from hitting the water curtain at this time and causing the water curtain to be vacant, the dust-laden air movement speed needs to be reduced. Therefore, an air curtain is needed to slow down and intercept it.

[0113] The power of the air pump assembly 1 is calculated according to the real-time change rate of the dust content of the additional auxiliary air. The specific calculation formula is as follows:

[0114]

[0115] Wherein, Qbgl is the calculated power of the air pump assembly 1, jcgl is the daily working power of the air pump assembly 1 in the lane, C is the real-time change rate of the dust content of the additional auxiliary air when the air pump assembly 1 needs additional assistance, and D is the proportional coefficient between the adjusted operating power of the air pump assembly 1 and the real-time change rate of the dust content of the additional auxiliary air;

[0116] jcgl is the daily movement power. The airflow generated by daily operation can prevent dust from contacting the dust reduction components, thereby extending the service life of the dust reduction components.

[0117] The power of the air pump assembly 1 is adjusted to the calculated power, which can provide a good protective effect.

[0118] The steps for adjusting the power of the liquid delivery assembly are as follows:

[0119] The real-time power of the liquid delivery component is calculated based on the air data inside the tunnel during tunnel excavation and drilling. The specific calculation formula is as follows:

[0120]

[0121] Where Ycgl′ is the real-time power of the liquid delivery component, and Hcl′ is the real-time dust content inside the tunnel during tunnel excavation and drilling;

[0122] Calculating the difference between the real-time power of the liquid delivery component and the predicted power of the liquid delivery component;

[0123] If Ycgl-Ycgl′≤0, adjust the power of the liquid conveying component to Ycgl′. In this case, there is too much dust and the power needs to be increased;

[0124] If Ycgl-Ycgl′>0, the difference between the real-time power of the liquid delivery component and the predicted power of the liquid delivery component is compared with the preset upper limit value Sxz;

[0125] The smaller Sxz is, the higher the accuracy is, and Sxz is greater than 0.

[0126] If Ycgl-Ycgl′≤Sxz, the power of the liquid delivery component will not be adjusted. In this case, the predicted power is large, but not too large, so no adjustment is required.

[0127] If Ycgl-Ycgl′>Sxz, the power of the liquid delivery component is adjusted to Ycgl′. In this case, the predicted power is large, and the power needs to be adjusted in order to save energy and resources.

[0128] The present invention records a dust reduction device that is convenient to move and used in mine development. The device adjusts its strategy in real time according to specific circumstances, and realizes dust isolation and dust reduction by combining an air curtain and a water curtain. The water curtain is used to reduce the impact force of dust gas, and the integrity of the water curtain can be ensured, thereby improving the dust reduction effect. Moreover, the air curtain can protect the dust reduction component during daily use, and can maintain the spray effect of the dust reduction component, thereby ensuring the dust reduction effect of the dust reduction component, and at the same time can extend the service life of the dust reduction component. The overall use effect is good, and it has a good prospect for use.

[0129] Safety warning module: used to obtain and analyze the data collected by the data acquisition module and the working data of the folding dust reduction device, calculate the air risk value Kqfxz based on the data collected by the acquisition module, compare the air risk value with the preset safety threshold, and issue a warning when the air risk value is higher than the safety threshold and the working data of the folding dust reduction device is abnormal.

[0130] The calculation formula of air risk value Kqfxz is as follows:

[0131]

[0132] In the formula, when Nd i -Bz i When <0, take Nd i -Bz i=0, Yqld is the monitored oxygen concentration, Dqnd is the average oxygen concentration in the area, Q is the number of data types monitored except oxygen, Nd i is the concentration of the monitored gas, Bz i is the average concentration of the i-th gas in the area, θ is the weight coefficient of oxygen, and θ i is the weight coefficient of the i-th gas.

[0133] Safety thresholds are set according to the characteristics of the area and lane.

[0134] The weight coefficient is determined by the coefficient of variation method, which is a method of weighting each indicator according to the degree of variation between the current value of each evaluation indicator and the target value. If the numerical difference of an indicator is large, it can clearly distinguish the evaluated objects, indicating that the indicator has rich discrimination information, and thus the indicator should be given a larger weight. On the contrary, if the numerical difference of each evaluated object on a certain indicator is small, then the ability of this indicator to distinguish the evaluation objects is weak, and thus the indicator should be given a smaller weight. This method directly uses the information contained in each indicator to obtain the weight of the indicator through calculation, so it is objective.

[0135] The air risk value Kqfxz can reflect the safety of the tunnel air and whether it is suitable to continue excavation drilling. When excavation drilling encounters special circumstances such as gas leakage, the air risk value Kqfxz will change dramatically. At this time, an early warning will be issued and excavation drilling will be suspended. Wait until the ventilation equipment improves the tunnel environment before processing can be carried out.

[0136] The higher the air risk value Kqfxz, the greater the risk. Multiple levels can be designed, and different levels of air risk values ​​Kqfxz will use different degrees of alarm warning.

[0137] When the working data of the folding dust suppression device is abnormal, it is a normal equipment warning. For example, the existing pumps of the pump body are equipped with a temperature monitoring structure, which can remotely monitor the high temperature of the pump body and the lack of liquid in the mobile box 2.

[0138] The present invention records a dust reduction device that is convenient to move and used in mine development. The device conducts a comprehensive analysis of tunnel excavation, and before drilling, combines the tunnel excavation drilling plan, the tunnel drilling data of the previous excavation, and the daily air data of the mine tunnel to predict the real-time dust content in the next excavation process, and formulates a preliminary dust reduction strategy based on the real-time dust content, which has the effect of early prevention, and makes real-time adjustments according to specific circumstances. While ensuring the dust reduction and isolation effects, it can effectively reduce the loss of dust reduction related resources, the overall use effect is good, and it has a good prospect for use.

[0139] like Figure 3-9 As shown, the folding dust suppression device includes a mobile box 2, a folding bracket 4 and a dust suppression frame 5:

[0140] The lower end of the mobile box 2 is equipped with a lifting caster 3. When moving, the lifting caster 3 is lifted and contacts the ground of the lane, which is convenient for movement. When dust is reduced, the lifting caster 3 is retracted. At this time, the lower end of the mobile box 2 contacts the ground, reducing the gap, so that the dust isolation effect of the folding dust reduction device is better. The upper end surface of the mobile box 2 is installed near both sides with a driving box;

[0141] The width of the mobile box 2 is 8-10 cm narrower than the lane, so it can move directly.

[0142] A liquid level meter is installed inside the mobile box 2 to directly measure the residual amount of dust reduction liquid inside the mobile box 2 .

[0143] There are two groups of folding brackets 4. The lower ends of the folding brackets 4 are fixedly connected to the output shaft of the motor inside the driving box. The motor drives the folding brackets 4 to unfold or fold.

[0144] The motor is provided with a brake structure, which can lock the output shaft to fix the position of the folding bracket 4, and the motor is provided with a corresponding reducer structure.

[0145] When the motor drives the folding bracket 4 to rotate outward, the upper half of the folding bracket 4 contacts the side wall of the lane, and the side wall of the lane plays a guiding role, so that the folding bracket 4 opens to fit the inner surface of the lane.

[0146] When the motor drives the folding bracket 4 to rotate inward, the upper part of the folding bracket 4 will be folded up under the action of the gravity of the dust suppression frame 5. After folding, the whole device does not contact the side wall of the tunnel, so it can move directly.

[0147] The two sides of the lower end surface of the dust suppression frame 5 are rotatably connected to the upper end of the folding bracket 4 through hinges, and the lower end surface of the dust suppression frame 5 is equipped with a plurality of dust suppression components;

[0148] The dust reduction component adopts a nozzle 12, and a guide cover 13 is installed at the lower end of the nozzle 12 near the middle position.

[0149] The guide cover 13 can limit the direction of the atomized water so that it is concentrated below the dust suppression frame 5 to form a water curtain.

[0150] The guide hood 13 is installed on the nozzle 12 near the two sides, and its spraying area is wide, which can realize the lateral dust reduction of the mobile box 2, effectively reduce the amount of dust passing through the dust reduction device, and has a good dust reduction and dust isolation effect.

[0151] Among them, a liquid conveying component is installed inside the mobile box 2, and the liquid conveying component is connected with several groups of dust reduction components through pipelines.

[0152] The liquid delivery component adopts a water pump. A separate cavity is set near the two ends of the mobile box 2 for installing the water pump and the air pump. A secondary filter is set inside the mobile box 2. The water drawn by the water pump is water filtered by the secondary filter, which can effectively prevent debris in the water from clogging the nozzle 12, and the use effect is good.

[0153] The present invention records a dust suppression device that is convenient to move for use in mining, wherein the folding dust suppression device is recorded. The folding dust suppression device adopts a mobile design, and its main body can be folded, so the volume of the entire device can be reduced, thereby facilitating the movement of the folding dust suppression device. Moreover, the folding dust suppression device is convenient to fold and unfold, can be easily installed, is convenient to use as a whole, and has good prospects for use.

[0154] The side end surface of the folding bracket 4 facing the laneway and the side end surface of the dust suppression frame 5 facing the top of the laneway are both provided with installation grooves, and a plurality of groups of blocking members are arranged in the installation grooves;

[0155] The sealing part includes a sealing column 6 and a spring. One end of the spring and the sealing column 6 are both located in the mounting groove. The sealing column 6 is connected to the inner bottom surface of the mounting groove through the spring. The end of the sealing column 6 is a regular hexagon. Adjacent sealing columns 6 are arranged in a close fit. Regular quadrilaterals, regular octagons, etc. can also be used. This arrangement makes the sealing effect better and makes the gaps between the blocking columns 6 relatively small, thereby being able to isolate more dust.

[0156] The blocking piece can also be replaced with rubber material or airbag, such as Fig.10 As shown, if this structure is used, it will come into contact with the inner wall of the tunnel during use, causing rapid wear of the rubber material or the airbag, which will seriously affect the use effect.

[0157] The present invention records a dust reduction device for use in mining that is easy to move. Sealing parts are installed on the folding bracket and the dust reduction frame. When in use, the sealing columns in the sealing parts are staggered, and the sealing columns can move independently. The blocking columns can fit tightly with the inner wall of the tunnel, thereby increasing the dust isolation effect of the dust reduction device for the entire mining, thereby effectively preventing dust from spreading and interfering with other areas of the tunnel, improving the safety of the entire tunnel, and having good use prospects.

[0158] A collecting rack 7 for collecting the liquid sprayed from the dust reduction assembly is provided in the middle of the upper end surface of the mobile box 2, wherein a group of the front end surfaces of the collecting racks 7 and the upper end surface of the mobile box 2 are provided with strip openings 8, on which filter screens 9 are installed, and the liquid on the collecting racks 7 passes through the filter screens 9 and flows into the interior of the mobile box 2.

[0159] The collecting rack 7 can collect the gathered falling ultrasonic dust particles. After a period of use, the atomized water increases and accumulates. The liquid moves along the upper end surface of the mobile box 2. After passing through the filter screen 9, the liquid flows into the interior of the mobile box 2 and can be reused, effectively solving the problem of resources.

[0160] The water curtain exists for a long time, while there are intervals in the drilling, so there is a situation of water accumulation, which makes it possible to recover.

[0161] If the liquid delivery assembly is only activated during drilling, then the collecting frame 7, strip opening 8 and filter screen 9 structures do not need to be provided.

[0162] A hollow blocking bar 10 is installed on the dust suppression frame 5 on the outside of the dust suppression component, and an air outlet 11 is opened on the lower end surface of the hollow blocking bar 10. An air pump component 1 connected to the hollow blocking bar 10 through a pipeline is arranged inside the mobile box 2.

[0163] The end of the dust suppression frame 5 may also be made of elastic material, which makes adjustment more convenient.

[0164] When in use, the air pump assembly 1 supplies air, the gas enters the hollow blocking strip 10, and then is obliquely ejected through the air outlet 11 at the lower end of the hollow blocking strip 10, which can form an air curtain, reduce the impact of dust gas on the water curtain, reduce the leaks of the water curtain, and thus improve the dust isolation effect of the water curtain.

[0165] The air outlet 11 is located at the dust reduction component, so the air flow speed lateral to the air outlet 11 is relatively fast, which can play a protective role and effectively prevent dust from contacting the dust reduction component, thereby ensuring the dust reduction effect of the dust reduction component.

[0166] The above formula is a formula obtained by collecting a large amount of data and performing software simulation to obtain the most recent real situation. The preset parameters in the formula are set by technicians in this field according to actual conditions.

[0167] The above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination thereof. When implemented using software, the above embodiments may be implemented in whole or in part in the form of a computer program product. A person of ordinary skill in the art may appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein may be implemented in electronic hardware, or in a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution.

[0168] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, and may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0169] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

Claims

1. A dust suppression device for mining that is easy to move, characterized in that: include: Data acquisition module: It is installed inside the mine tunnel near the tunnel excavation drilling position, and is used to collect daily air data in the mine tunnel and air data inside the tunnel during tunnel excavation and drilling; Mining analysis module: used to obtain the tunnel excavation drilling plan and the tunnel excavation drilling data of the last time, and formulate a preliminary dust reduction strategy based on the daily air data of the mine tunnel; Folding dust suppression device: It is installed inside the mine tunnel near the tunnel excavation drilling position and is used to suppress dust inside the tunnel according to the preliminary dust suppression strategy; Dynamic adjustment module: used to obtain the air data inside the tunnel during tunnel excavation and drilling, formulate an adjustment plan based on the real-time air data inside the tunnel, and control the folding dust suppression device to implement the adjustment plan; Safety warning module: used to obtain and analyze the data collected by the data acquisition module and the working data of the folding dust suppression device, calculate the air risk value Kqfxz based on the data collected by the acquisition module, compare the air risk value with the preset safety threshold, and issue a warning when the air risk value is higher than the safety threshold and the working data of the folding dust suppression device is abnormal; The folding dust suppression device includes: The movable box (2) has lifting casters (3) installed at its lower end and drive boxes installed near both sides of its upper end surface; Folding brackets (4), which are in two groups, and whose lower ends are fixedly connected to the output shaft of the motor inside the driving box, and the motor drives the folding brackets (4) to unfold or fold; A dust suppression frame (5), the two sides of the lower end surface of which are rotatably connected to the upper end of the folding bracket (4) through hinges, and the lower end surface of the dust suppression frame (5) is equipped with a plurality of dust suppression components; Wherein, a liquid conveying component is installed inside the mobile box (2), and the liquid conveying component is connected with a plurality of dust reduction components through a pipeline; The side end surface of the folding bracket (4) facing the laneway and the side end surface of the dust suppression frame (5) facing the top of the laneway are both provided with installation grooves, and a plurality of groups of blocking members are arranged in the installation grooves; The blocking member comprises a blocking column (6) and a spring, one end of the spring and the blocking column (6) are both located in the mounting groove, the blocking column (6) is connected to the inner bottom surface of the mounting groove via the spring, the end of the blocking column (6) is a regular hexagon, and adjacent blocking columns (6) are arranged in a close fit.

2. The dust suppression device for mine development that is convenient to move according to claim 1 is characterized by: The daily air data of mine tunnels and the air data inside tunnels during tunnel excavation and drilling include dust content, oxygen concentration, carbon monoxide concentration, carbon dioxide concentration, sulfur dioxide concentration, methane concentration and nitrogen oxide concentration in the air.

3. The dust suppression device for use in mining that is convenient to move according to claim 2 is characterized by: A collection rack (7) for collecting liquid sprayed by the dust reduction assembly is arranged in the middle of the upper end surface of the mobile box (2), wherein a front end surface of one group of the collection racks (7) and the upper end surface of the mobile box (2) are both provided with strip-shaped openings (8), and a filter screen (9) is installed on the strip-shaped openings (8), and the liquid on the collection rack (7) passes through the filter screen (9) and flows into the interior of the mobile box (2).

4. The dust suppression device for use in mining that is convenient to move according to claim 3 is characterized by: A hollow blocking bar (10) is installed on the dust reduction frame (5) at the outside of the dust reduction component, and an air outlet (11) is provided on the lower end surface of the hollow blocking bar (10). An air pump component (1) connected to the hollow blocking bar (10) through a pipeline is arranged inside the mobile box (2).

Images