CN113756821B - Auxiliary system and method for guaranteeing safety of constructors in high drop shaft - Google Patents
Auxiliary system and method for guaranteeing safety of constructors in high drop shaft Download PDFInfo
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- CN113756821B CN113756821B CN202111212567.1A CN202111212567A CN113756821B CN 113756821 B CN113756821 B CN 113756821B CN 202111212567 A CN202111212567 A CN 202111212567A CN 113756821 B CN113756821 B CN 113756821B
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- 238000000034 method Methods 0.000 title claims abstract description 59
- 238000007689 inspection Methods 0.000 claims abstract description 108
- 230000009471 action Effects 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims description 41
- 239000000428 dust Substances 0.000 claims description 21
- 238000005065 mining Methods 0.000 abstract description 12
- 238000005422 blasting Methods 0.000 description 35
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 26
- 230000000903 blocking effect Effects 0.000 description 26
- 239000002360 explosive Substances 0.000 description 21
- 229910002092 carbon dioxide Inorganic materials 0.000 description 13
- 239000001569 carbon dioxide Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 238000005485 electric heating Methods 0.000 description 11
- 230000007246 mechanism Effects 0.000 description 11
- 239000007788 liquid Substances 0.000 description 10
- 238000005553 drilling Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 9
- 230000004888 barrier function Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000005484 gravity Effects 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 239000002367 phosphate rock Substances 0.000 description 6
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000032258 transport Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000002716 delivery method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/22—Methods of underground mining; Layouts therefor for ores, e.g. mining placers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/04—Transport of mined material in gravity inclines; in staple or inclined shafts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- Mechanical Engineering (AREA)
- Elimination Of Static Electricity (AREA)
- Emergency Lowering Means (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The application relates to a high drop shaft and a mining method using the same, at least comprising an inspection gallery and a plurality of sections of telescopic rods assembled with rocket projectiles, wherein the inspection gallery is communicated to a high drop shaft channel through an inspection inclined gallery and is used for providing a movable channel of the plurality of sections of telescopic rods after the plurality of sections of telescopic rods are separated from the inspection gallery, when the plurality of sections of telescopic rods are positioned in the inspection inclined gallery, the rocket projectiles are driven to slide downwards under the action of the self weight of the rocket projectiles by utilizing the height difference of the two ends of the inspection inclined gallery in the vertical direction, and the plurality of sections of telescopic rods extend and stretch.
Description
The application relates to a division application of a high drop shaft and a mining method using the same, which has the application number of 202010352845.2, the application date of 2020, the application type of 04 month and 28 days, and the application name of the division application.
Technical Field
The application relates to the technical field of mining, in particular to an auxiliary system and method for guaranteeing safety of constructors in a high drop shaft.
Background
The ore pass is used for connecting an upper middle section and a lower middle section, temporarily storing ores or waste stones, and the ore pass ore discharge capacity directly influences the economic benefit and the production capacity of the whole mine. Once a blockage occurs, normal production in the mine is severely affected, or even shut down. Therefore, prevention of blockage of ore pass and effective dredging after blockage are highly important problems of underground mines. And a blocking event occurs during ore pass, so that normal production is seriously affected. After the drop shaft is blocked, the drop shaft needs to be dredged safely and quickly, production is recovered in time, a treatment method is determined according to local conditions, and a safe and effective method is selected in a targeted manner.
The mine adopting the drop shaft to draw ores at home and abroad has the main reason of influencing normal production, namely that drop shafts are frequently blocked, and the normal operation of mine production is seriously influenced. For example, the Shandong Lanjian ore No. 2 drop shaft in China is delivered and used in 1972 (diameter is 5m and depth is 244 m), and due to 6 serious blocking accidents, only 123.2 ten thousand t of ore is discharged, and the service life is less than 10 years. The last blockage was resolved after 17 years. The normal production of mines is seriously influenced, so that enterprises cause huge economic losses, and the economic cost of millions of yuan is input only by dredging the blockage.
Particularly for blocks of 300 to 500mm, the use of a high pass is currently a more efficient delivery method. However, when the height of the phosphorite high drop shaft exceeds 300 meters, the excessive height difference thereof constitutes a great challenge and bottleneck for the blockage treatment, and the high drop shaft height for phosphorite exploitation operation is limited to be generally set to be 100 to 200 meters or more. At present, no phosphorite high drop shaft of more than 300 meters exists in China.
Regarding the problem of drop shaft blockage existing in the mining industry all the time, the conventional water flushing dredging method is low in effect, and the prior art utilizes the high effect advantage of blasting dredging to provide a large number of solutions. The main current blasting and dredging methods include a drilling blasting method, a hydrogen balloon blasting method and an unmanned aerial vehicle blasting method.
Patent document with the publication number of CN102997764B discloses a method and a blocking removing device for efficiently removing the blockage of a drop shaft, wherein the method comprises the steps of measuring and calculating blocking points, drilling guide holes, setting explosives and detonating to remove the blockage. The blocking removing device comprises a haulage rope conduit and a haulage rope, wherein the haulage rope penetrates through the haulage rope conduit to fix explosive. The application skillfully utilizes the drop shaft connecting channel which is matched with the drop shaft to measure the position of the blocking point and set explosive, utilizes the drop shaft connecting channel which is at the low position of the blocking point to determine the drilling direction, sets the opening of the guide hole below the blocking object (close to the blocking object), and the upper drop shaft connecting channel and the lower drop shaft connecting channel are matched, so that the explosive can be smoothly close to the blocking object, and the blasting effect is ensured; meanwhile, the use of the guide holes naturally separates operators from explosives, so that construction safety is ensured.
Patent document with the publication number of CN102927864B discloses a device and a method for blasting high-level blockage of a drop shaft by balloon suspension explosive: the device comprises an explosive combination body, a positioning pulley mechanism, a pull rope and an overhanging component, wherein the explosive combination body consists of a balloon, an explosive and a detonating tube, the gravity stress direction of the explosive combination body, the buoyancy and the tension stress direction are positioned on the same plumb line, and the overhanging component is arranged above the explosive combination body and can be close to or far away from the explosive combination body. The method comprises the steps of controlling the gravity stress direction and the buoyancy force and tension force stress direction of the explosive combination to be on the same plumb line during installation; in the process of floating the balloon, correcting the horizontal displacement of the balloon stopped at the well wall collapse part so as to control the gravity stress direction and the buoyancy force stress direction of the explosive combination to be on the same plumb line.
Patent document with the authority of publication number CN110567331a discloses a blasting fixing device and a drop shaft dredging system and method applied by the same, wherein the blasting fixing device comprises a vertical rod and at least one group of umbrella-shaped supporting mechanisms arranged on the vertical rod; the top of the upright post is provided with a supporting platform for fixing the explosive package; the umbrella-shaped supporting mechanism comprises a plurality of inclined supporting rods which are arranged in an umbrella shape around the vertical rods, one ends of the inclined supporting rods are connected to the vertical rods in an open state, and the other ends of the inclined supporting rods are propped against and supported on the inner wall of the blasting channel under the action of gravity of explosive charges and self weight of the device. According to the application, the umbrella-shaped supporting mechanism is used for fixing the explosive package, and after the explosive package is lifted and conveyed to the position below the blockage, the explosive package is supported and fixed in the drop shaft by the unidirectional supporting structure of the umbrella-shaped supporting mechanism for dredging and blasting.
However, in practical applications, if the drill blasting method (such as the method for efficiently removing the obstruction of the drop shaft and the unblocking device disclosed in the patent document of CN 102997764B) is adopted, the operation procedure is complex, the cost is high, and the serious problem that the specific drill hole position cannot be judged along with the drill hole deflection is also involved. If a hydrogen balloon blasting method (such as a device and a method for blasting high-level blockage of a drop shaft by balloon suspension explosive disclosed in patent document CN 102927864B) and an unmanned aerial vehicle blasting method (such as a blasting fixing device and a drop shaft dredging system and a method applied by the same disclosed in patent document CN110567331 a) are adopted, a plurality of workers are required to install auxiliary mechanisms on site in a channel communicated with the drop shaft, the working intensity is high, and no personnel protection measures are provided at all. Especially for the phosphorite high drop shaft with the height of 300 meters which is still immature in the domestic mining technology, the hydrogen balloon blasting method and the unmanned aerial vehicle blasting method which are difficult to carry when the auxiliary mechanisms are too many and the auxiliary mechanisms are put down in the well in the prior art, or the drilling blasting method with long time consumption and low reliability cannot be suitable for the high drop shaft with a larger height difference, and meanwhile, the safety operation regulation of the high drop shaft construction cannot be met.
Patent document with publication number CN109238062a in the prior art proposes a kinetic energy bullet device and a method for dredging a blocked drop shaft by using the device, wherein the kinetic energy bullet device comprises a kinetic energy bullet, a telescopic platform and a launching cradle; the kinetic energy bomb comprises a solid bomb head, a fuel cabin and a driving cabin which are sequentially connected from the head to the tail, the fuel cabin comprises a cabin body, an electric heating device and a constant pressure cracking device, the electric heating device and the constant pressure cracking device are respectively connected with a solid bomb head connecting end and a driving cabin connecting end of the cabin body, and the fuel cabin body is filled with liquid carbon dioxide; the telescopic platform comprises a fixed section, a telescopic section and a driving device, wherein the telescopic section is pushed by the driving device to move along the fixed section, so that the telescopic section stretches into the drop shaft and returns; the launching frame is arranged on the telescopic section, and the kinetic energy bullet is arranged on the launching frame with the solid bullet end facing the blocking body. The kinetic energy generated by the high-pressure gas after the liquid carbon dioxide phase change after bursting the constant pressure rupture device is used for enabling the kinetic energy bomb to be rapidly launched and impacted on the blocking body in the drop shaft, so that the blocking body falls down after being disintegrated.
Under this technical scheme, flexible platform level sets up, and the stone that produces when leading to the blasting easily gets into this platform and causes the jam even leads to the unable reuse of this department flexible platform to personnel must stand at the very near position with the drop shaft passageway to install kinetic energy bullet device, can't solve the jam and probably become flexible suddenly and the potential safety hazard that causes personnel. In contrast, the system provided by the application improves the structure of the platform, so that on one hand, stones generated during blasting are not easy to enter or leave on the platform, the reusability of the platform is ensured, and on the other hand, the installation position of the rocket projectile is far away from a drop shaft channel, and the safety of personnel is greatly ensured.
Furthermore, there are differences in one aspect due to understanding to those skilled in the art; on the other hand, as the inventors studied numerous documents and patents while the present application was made, the text is not limited to details and contents of all that are listed, but it is by no means the present application does not have these prior art features, the present application has all the prior art features, and the applicant remains in the background art to which the rights of the related prior art are added.
Disclosure of Invention
Regarding the problem of drop shaft blockage in the current mining industry, on the basis of the original traditional low-effect water-jet dredging method, a large number of solutions are provided by the prior art by utilizing the high-effect advantage of blasting dredging, and the main current blasting dredging methods comprise a drilling blasting method, a hydrogen balloon blasting method and an unmanned aerial vehicle blasting method. However, in practical application, the drilling and blasting method has the defects of complex operation procedure, high cost and incapability of judging the specific drilling position along with drilling deflection, and the hydrogen balloon blasting method and the unmanned aerial vehicle blasting method both require a plurality of workers to install auxiliary mechanisms on site in a channel communicated with the drop shaft, have high working intensity and completely have no personnel protection measures. Especially for the phosphorite high drop shaft with the height of 300 meters which is still immature in the domestic mining technology, the hydrogen balloon blasting method and the unmanned aerial vehicle blasting method which are difficult to carry when the auxiliary mechanisms are too many and the auxiliary mechanisms are put down in the well in the prior art, or the drilling blasting method with long time consumption and low reliability cannot be suitable for the high drop shaft with a larger height difference, and meanwhile, the safety operation regulation of the high drop shaft construction cannot be met.
Aiming at the defects of the prior art, the application provides the high drop shaft which meets the requirements of safe operation of high drop shaft construction and realizes the effect of dredging the blockage more efficiently, the high drop shaft provided by the application is provided with the first protective door and the multiple telescopic rods which are matched with each other for use, the worker only needs to carry the rocket projectile and the simple and light multiple telescopic rods to go down the well, the working strength is low, the cost is greatly reduced, the worker always realizes the work of accurately observing the blockage position, installing and launching the rocket projectile and the like under the condition of absolute safety, the safety performance is superior to that of any existing blockage dredging method, the liquid carbon dioxide can be rapidly expanded by more than 600-1000 times in a very short time under the action of the electric heating device, and the liquid carbon dioxide is safer and more stable compared with a blasting explosive while providing huge kinetic energy for the rocket projectile.
The application provides a high drop shaft, which at least comprises: the inspection auxiliary shaft channel is arranged in parallel with the high drop shaft channel; one end of the inspection gallery is communicated with the inspection auxiliary well channel; the first guard gate, its install openable in the inspection gallery, its characterized in that high drop shaft still includes be used for with first guard gate cooperation is used and be equipped with the multisection telescopic link of rocket shell, wherein: in the process that the first protective door is switched from a first closed state to a second closed state which is different from the opening and closing direction of the first closed state, the multi-section telescopic rod transfers rocket projectiles which are kept on the rod body and the installation direction of which meets the blocking direction in the high drop shaft into the high drop shaft channel through the checking gallery by utilizing the first external force in a non-electric driving mode so as to block the high drop shaft.
The first closed state refers to the front face of the first protection door facing the side where the inspection shaft is located and the back face facing the side where the high drop shaft is located. The second closed state refers to the front face of the first protection door facing the side where the high drop shaft is located and the back face facing the side where the inspection roadway is located. The first protective doors in two closed states are used for isolating gas circulation between the inspection roadway and the high drop shaft. The first protective door in the closed state ensures the safety of staff. The first guard door may be of a revolving door construction as is common. The staff only needs to install the rocket projectile carried on the multi-section telescopic rod. Through the linkage relation between the multisection telescopic link and the first protection door, the start and stop of the first protection door can drive the multisection telescopic link to move back and forth at the side of the inspection roadway and the side of the high drop shaft, and therefore the rocket shell is transferred into the high drop shaft channel. The multi-section telescopic rod does not need to consume electric energy, and can realize automatic positioning of the rocket projectile only under the action of self gravity (namely the first external force) of the rocket projectile. Under this setting, the structure of multisection telescopic link is very simple and easy and manufacturing cost extremely low, need not any electronic chip or circuit connection and can guarantee the rocket bullet of high reliability and shift, even multisection telescopic link is broken by the ore accident because of the jam dredging process, the cost of maintenance of changing new multisection telescopic link is also very low.
According to a preferred embodiment, when the rocket projectile is released from the multi-section telescopic link, the multi-section telescopic link is capable of being returned to an initial state within the inspection roadway in a non-electrically driven manner by means of a second external force application body different from the first external force application body, by means of the first barrier door, in a process of being reversely switched from the second closed state to the first closed state.
The main body for applying the first external force mainly refers to a rocket projectile arranged on the multi-section telescopic rod, and the main body for applying the second external force different from the main body mainly refers to an elastic part arranged inside the multi-section telescopic rod. The multi-section telescopic rod can be kept in a contracted state under the action of the elastic force of the elastic component, and at the moment, the length of the multi-section telescopic rod is shorter, so that the multi-section telescopic rod can completely and smoothly pass through the first protective door. The multi-section telescopic rod after the rocket projectile is installed is extended and elongated. When the rocket projectile breaks away from the multi-section telescopic rod, the multi-section telescopic rod is not influenced by the gravity of the rocket projectile any more, and the rocket projectile is retracted to a shorter length under the elastic release of the elastic component. The multi-section telescopic rod after the rocket projectile is released can be smoothly recycled into the inspection roadway through the first protective door. The staff can reuse the multi-section telescopic rod or replace a new multi-section telescopic rod.
According to a preferred embodiment, the inspection shaft is connected to the high drop shaft channel through an inspection inclined shaft, so as to provide a movable channel for the multi-section telescopic rod after the multi-section telescopic rod is separated from the inspection shaft.
The inclined drift is obliquely arranged, and the height difference of the two ends of the inclined drift in the vertical direction is utilized, so that the ore accumulation in the inclined drift is avoided in the daily ore unloading or blocking dredging process; secondly, after the multi-section telescopic rod is transferred into the inspection inclined roadway, under the height difference, the rocket shell positioned on the tail end of the multi-section telescopic rod is driven to slide downwards under the action of the self weight of the rocket shell, and the multi-section telescopic rod extends and stretches, so that the rocket shell is automatically positioned in the drop shaft. The rocket projectile transferring process is completed when the first protective door is in a closed state, so that the safety protection of workers is further ensured.
According to a preferred embodiment, a wind power generation module capable of storing electric energy by utilizing the air quantity during ore removal and blockage dredging in the high drop shaft is arranged in the inclined inspection roadway.
When unloading and dredging blockage in the high drop shaft, a large amount of ores move downwards at a high speed, so that strong impact wind pressure is generated, and especially the aimed high drop shaft of phosphorite with the depth of 300 meters is increased, so that the linear increase of the impact wind pressure is directly caused. In this regard, the high drop shaft provided by the application is provided with the wind power generation module which is arranged above the inner wall of the inclined inspection roadway, and the position is not only difficult to deposit ash but also is not hit by falling ores, so that the high drop shaft has long service life and high reliability, and meanwhile, strong wind in the inclined inspection roadway under the action of a narrow pipe effect is fully utilized to convert wind energy into electric energy for storage. The throat effect here refers to a narrowed duct similar to a street-to-street or building-to-building in a city where the wind speed and volume increase significantly. After the staff goes down to the inspection gallery, the stored electric energy can be communicated to each electric equipment in a brake opening mode.
According to a preferred embodiment, an observation equipment channel is formed in the inner wall of the high drop shaft channel, so that the observation equipment which is assembled in the observation equipment channel and is positioned in a storage position can be moved to a working position for acquiring the blockage azimuth information in the high drop shaft.
The high drop shaft provided by the application is provided with the observation equipment (such as the laser level gauge) which is particularly suitable for the application occasions with small diameter and large depth such as Gao Liujing, a worker does not need to directly contact with the high dust environment, only needs to indirectly observe by adopting the laser level gauge, and only needs to check the observation result after the first protection door is in the closed state, thereby being beneficial to the observation effect and improving the working efficiency of the worker and the working efficiency of the drop shaft ore drawing system.
According to a preferred embodiment, the scope is mounted on a scope rack, and a small fan mounted on the scope rack can be actuated by means of a relative movement of the scope rack within the scope channel.
After the observation equipment moves out of the observation equipment channel, the observation equipment is directly placed in a high dust environment of a high drop shaft, and dust is easy to accumulate. In this way, the application provides the observation equipment rack provided with the small fans, the small fans are synchronously driven to rotate by means of the movement of the observation equipment rack, so that redundant electric energy is not required to be consumed, meanwhile, the observation equipment has the small fans for blowing the mirror surfaces before and after the use, the observation effect of the observation equipment is improved, and the reduction of dust can effectively prolong the service life of the observation equipment.
According to a preferred embodiment, the inspection inclined roadway is internally provided with a bearing plate for slidably guiding the multi-section telescopic rod, and the bearing plate can reciprocate within a preset range relative to the inspection inclined roadway so as to minimize residues on the plate surface of the inspection inclined roadway.
In the process of unloading or dredging blockage, blasting impact or ore impact on the shaft wall of the shaft can cause vibration of a local structure of the shaft, so that the bearing plate is caused to shake in a small amplitude in the inclined roadway for inspection, and the bearing plate can shake off residues such as ore or dust which possibly remain in the bearing plate under the inclination angle. Firstly, ensure the smooth extension and deployment of the multi-section telescopic rod, and on the other hand, the rod body of the multi-section telescopic rod can be smoothly extended through small-amplitude shaking when the multi-section telescopic rod is not smoothly deployed.
The application also provides a mining method using the high drop shaft, which is characterized by at least comprising at least one of the following steps: under the condition that the observation equipment acquires the blockage azimuth information in the high drop shaft, when the second protective door is in a closed state, the electronic terminal indicates the first protective door to be switched from the current first closed state to the second closed state, so that a plurality of sections of telescopic rods positioned on the first protective door transfer rocket projectiles on rod bodies of the telescopic rods into a high drop shaft channel; a wireless remote controller operated by a worker indicates the rocket shell to be separated from the multi-section telescopic rod so as to realize the blasting dredging of the blockage in the high drop shaft.
According to a preferred embodiment, the mining method further comprises at least one of the following steps: when the inspection gallery and the high drop shaft channel are relatively isolated from each other through the first protective door in the first closed state, the electronic terminal drives the observation equipment in the observation equipment channel to move between the storage position and the working position of the observation equipment so as to acquire the blockage azimuth information in the high drop shaft; based on the received blockage azimuth information in the high drop shaft, the electronic terminal outputs rocket projectile installation direction information meeting the blockage azimuth in the high drop shaft, and the rocket projectile installation direction information is used for displaying the rocket projectile installation direction information to workers for checking.
According to a preferred embodiment, the mining method further comprises at least one of the following steps: the electronic terminal obtains the air volume information in the high drop shaft channel through the wind power generation module, and when the air volume information meets a preset safe air volume threshold value, the electronic terminal indicates the first protection door to reversely switch from the second closing state to the first closing state, so that the multiple sections of telescopic rods separated from the rocket shell are recycled into the inspection gallery.
Drawings
FIG. 1 is a simplified overall schematic of a preferred inspection chute of the present application;
FIG. 2 is a simplified overall construction schematic of a preferred multi-section telescopic rod of the present application;
FIG. 3 is a simplified overall structural schematic of the security door of the present application;
FIG. 4 is a simplified overall structural schematic of the high pass of the present application; and
fig. 5 is a simplified overall structure schematic of the inspection roadway of the present application.
List of reference numerals
1: inspection accessory well channel 2: high drop shaft passageway 3: upper centralized transport lane
4: lower centralized transport lane 5: ladder compartment 6: inspection roadway
7: checking inclined drift 8: rest platform 9: mounting groove
10: ore discharge lane 11: connecting lane 12: first protective door
13: scope channel 14: observation equipment rack 15: attachment rod
16: observation device 17: screw 18: sliding block
19: second guard gate 20: the rotating shaft 21: multi-section telescopic rod
22: struts 23: limit part 25: mounting rack
Detailed Description
The present application will be described in detail with reference to the accompanying drawings.
The application provides a high drop shaft and a mining method using the same.
Aiming at the main body structure of the high drop shaft provided by the application: as shown in fig. 4 and 5, the high pass includes at least a high pass passage 2 and an inspection shaft passage 1 arranged in parallel. The top end of the high drop shaft channel 2 is provided with an ore discharging lane 10 and an upper centralized transportation lane 3 which are communicated with each other. The bottom end of the high drop shaft channel 2 is provided with a lower centralized transportation lane 4 communicated with an ore discharging lane 10. The worker transports the ore to the ore discharge lane 10 through the upper concentrated transport lane 3. A connecting roadway 11 is arranged at the top end of the inspection auxiliary shaft channel 1. A rest platform 8 for the rest of staff is arranged between the adjacent ladder compartments 5. The staff enters the inspection shaft channel 1 through the connecting roadway 11 and moves up and down through a plurality of ladder compartments 5 arranged in the inspection shaft channel 1 to observe the blocking condition at different positions.
As shown in fig. 1, an inspection roadway 6 and a first protective door 12 installed in the inspection roadway 6 are provided in the inspection attachment passage 1. The worker can observe and process the blockage situation in the high pass through the inspection shaft channel 2 by descending the inspection shaft channel 1 into the inspection shaft 6. The first protective door 12 is arranged to isolate the inspection shaft 6 from the high pass passageway 2.
As shown in fig. 1, the inspection shaft 6 is connected to the high pass passage 2 via an inspection inclined shaft 7. The inspection auxiliary shaft channel 1 is communicated with the inspection auxiliary shaft channel 1 through an inspection gallery 6 and an inspection inclined gallery 7 in sequence. The inspection inclined roadway 7 is used for providing a movable passage for the multi-section telescopic rod 21 after the multi-section telescopic rod is separated from the inspection roadway 6. The inspection inclined roadway 7 is obliquely arranged. By means of the vertical height difference of the two ends of the inspection inclined drift 7, ore accumulation in the inclined drift is avoided in the daily ore unloading or blocking dredging process.
By utilizing the vertical height difference of the two ends of the inspection inclined roadway 7, after the multi-section telescopic rod 21 is transferred into the inspection inclined roadway 7, under the height difference, the rocket shell positioned on the tail end of the multi-section telescopic rod 21 is driven to slide downwards under the action of the self weight of the rocket shell, and the multi-section telescopic rod 21 extends and stretches, so that the rocket shell is automatically positioned in the drop shaft. The rocket projectile transferring process is completed when the first protective door 12 is in a closed state, so that the safety protection of workers is further ensured.
As shown in fig. 1, an observation device channel 13 is formed on the inner wall of the high drop shaft channel 2. Scope channel 13 is internally fitted to scope 16. The observation device 16 is in a storage position inside the observation device passageway 13 and can be actuated to move to a working position inside the high pass. The observation device 16 in the working position can acquire the blockage azimuth information in the high pass. The high drop shaft blockage azimuth information refers to whether the blockage position is above or below the current inspection chute 7. The installation direction of the rocket projectile can be indicated by the worker.
Both the inspection roadway 7 and the observation device passageway 13 are inclined with respect to a first direction, which is the longitudinal extension direction of the inspection roadway 6. The inclined arrangement is advantageous in avoiding ore accumulation at the junction between the inspection shaft 6 and the high pass passageway 2.
As shown in fig. 1, an observation device holder 14 that can be moved along the inner wall of the observation device passage 13 in a direction toward or away from the inspection well passage 1 is provided in the observation device passage. The scope rack 14 includes at least a screw 17 fixed at both ends to the inner wall of the scope channel 1, respectively, and a slider 18 slidably connected to the screw 17. The screw 17 can rotate relative to the inner wall of the observation device channel 13, and the sliding block 18 moves back and forth under the rotation movement of the screw 17. The screw rod 17 is driven to rotate, so that the observation equipment 16 can be controlled to move back and forth in the channel, and a worker does not need to directly contact the high-dust environment and only needs to operate the laser level gauge to conduct indirect observation.
The scope rack 14 comprises at least an attachment bar 15 slidingly connected to the inner wall of the scope channel 13. The attachment bar 15 is parallel to the screw 17. The rod body of the attachment rod 15 is fixedly connected to the slider 18. One end of the attachment rod 15 is provided with at least one observation device 16 for observing the high pass channel 2. As shown in fig. 2, when the observation equipment 16 is fed into the high pass passage 2 along the observation equipment passage 13 for observation, it can be ensured that the observation equipment 16 is aligned with the vertical direction of the high pass passage 2.
Two observation devices 16 are provided on the observation device rack 14, and the two observation devices 16 are arranged side by side but are opposite in lens orientation to each other. When the observation device 16 is sent into the high drop shaft channel 2 for observation, the upper side and the lower side of the high drop shaft channel 2 can be observed at the same time, and the blocking position can be rapidly determined.
After moving out of the observation device channel 13, the observation device 16 is directly placed in a high dust environment of a high drop shaft, and dust is easy to accumulate. In this regard, the present application proposes a scope rack 14 provided with small fans. The small fan is aimed at the upper mirror of the observation device 16. The small fan is of a rope-pulling type driving structure, and an external power supply or a built-in battery is not needed. One end of the stay cord is fixed on the inner wall of the observation equipment channel 13, the rope body is wound on the elastic winding drum, when the observation equipment frame 14 moves outwards, the rope body is lengthened, when the observation equipment frame 14 moves inwards, the elastic winding drum automatically rotates, the rope body is shortened, and the small fan is driven to rotate. Unnecessary electric energy is not consumed, meanwhile, the small fans are arranged on the observation equipment 16 before and after the use to sweep the mirror surfaces of the observation equipment 16, the observation effect of the observation equipment 16 is improved, and the service life of the observation equipment 16 can be effectively prolonged due to the reduction of dust.
Preferably, a small fan may be provided in an end wall of the scope channel 13. One end of the stay cord is fixed on the observation equipment rack 14, when the observation equipment rack 14 moves outwards, the rope body is lengthened, when the observation equipment rack 14 moves inwards, the elastic winding drum automatically rotates, the rope body shortens, and the small fan is driven to rotate. The small fan in this arrangement not only sweeps the mirror surface of the observation device 16, but also cleans the residual ash in the observation device channel 13.
The high pass also comprises a second protection door 19. The second protective door 19 is installed at one side of the inspection shaft 6, which is closer to the inspection shaft channel 1 than the first protective door 12. Through setting up two emergency exits, effectively strengthened when carrying out the inspection operation, the staff and the inside isolation effect between the high dust environment of high drop shaft passageway 2. The isolation effect between the staff and the high negative pressure environment in the high drop shaft channel 2 during dredging operation is enhanced.
At least one dust settling device is arranged on the inner wall of the inspection gallery 6 between the two safety doors. The dust settling device can be a water mist dust settling device adopting dust settling modes such as a spray gun and the like.
The structure of the safety door provided by the application is as follows: as shown in fig. 3, at least one safety gate is secured into the inspection roadway 6 by at least one spindle 20. The two ends of the rotating shaft 20 are respectively connected to the upper and lower inner walls of the inspection roadway 6 in a rotating manner. The rotating shaft 20 is arranged at the position of the central axis of the safety door. The safety gate is fixed in the usual way of a revolving gate into the examination gallery 6. The air-receiving surface area is reduced in the arrangement mode, and the isolation capability of the air-receiving surface area on strong impact pressure or strong negative pressure formed between channels when the blockage is relieved is effectively improved.
At least one limiting part 23 is respectively arranged on the inner walls of the inspection roadway 6 positioned on two sides of the safety door. The limiting part 23 can be fixed on the inner wall of the inspection roadway 6 by means of concrete pouring. With the arrangement of the limit 23, the safety door can always only be turned in one direction to open or turned in the opposite direction to close. And the door parts positioned at both sides of the rotating shaft 20 are balanced in stress action, so that the safety door is stable.
At least one line is arranged on the inner wall of the passage between the two safety doors and between the second protective door 19 and the inspection auxiliary shaft passage 1, and is used for controlling the opening and closing of the first protective door 12. The line controlling the opening and closing of the observation device 16 is arranged between the two safety doors along the inner wall of the passage, so that the operation of the staff and the acquisition of the information observed by the observation device 16 are facilitated.
The manner in which the information observed by the observation device 16 is acquired may be by providing a display on the inner wall of the channel. Or the staff connects the handheld intelligent terminal to the data connection port on the inner wall of the channel for reading. Preferably, a line for controlling the opening and closing of the second protective door 19 is arranged between the second protective door 19 and the inspection auxiliary shaft channel 1 along the inner wall line of the channel. Thus, the worker can close the second barrier door 19 only after completely exiting the second barrier door 19. The closed state information of the second protective door 19 indirectly indicates that the worker is in the safe area.
Preferably, the inspection chute 7 may be provided with a vibration device on an inner wall located below the chute plate, and in the case that a worker observes that the mounting bracket 25 does not extend smoothly, the vibration device is turned on to perform a vibration process on the chute plate and the mounting bracket 25 to promote the mounting bracket 25 to extend smoothly.
The high pass includes a plurality of telescopic links 21 and a mounting bracket 25. One end of the multi-section telescopic rod 21 is movably connected to the first protective door 12. By turning the first guard door 12, the mounting bracket 25 can be transferred into the inspection chute 7. The multi-section telescopic rod 21 includes a plurality of struts 22 slidably connected to each other. The telescopic rod 21 may be extended or shortened in a manner of sliding relatively between the plurality of struts 22. The multi-section telescopic rod 21 positioned in the inclined inspection roadway 7 has the advantages that the rocket projectile at the tail end is heavy, and the multi-section telescopic rod 21 is driven to be unfolded and extended.
The plurality of struts 22 of the multi-section telescopic rod 21 can slide relatively in the longitudinal direction, but cannot rotate relatively in the circumferential direction of the rod body. The accurate positioning of the rocket projectile is ensured.
The mounting bracket 25 is fixed to one end of the multi-section telescopic rod 21. The mounting bracket 25 includes at least a mounting slot 9 for stabilizing the projectile. The personnel fix the projectile to the mounting bracket 25 via the mounting slot 9.
Preferably, the mounting bracket 25 may be detachably connected to the multi-section telescopic rod 21. The mounting frame 25 can be turned over and then mounted on the multi-section telescopic rod 21. The mounting groove 9 after or before steering corresponds to the position right above the high drop shaft or the position right below the high drop shaft respectively. The staff can be after knowing the jam position, adjust the orientation of mounting groove 9 by oneself for rocket projectile alignment jam position.
Preferably, the upper and lower sides of the frame body of the mounting frame 25 are provided with mounting grooves 9. The operator need only select the mounting slot 9 aligned with the blocking position. The working steps of the staff are reduced.
Preferably, the telescopic rod 21 can be movably connected to the first protective door 12 in a fastening manner. Likewise, the first protective door 12 is opened after the use is finished, and the multi-section telescopic rod 21 can be removed.
Preferably, baffles are provided on both sides of the connection portion of the first protective door 12 for connecting the plurality of telescopic links 21. The baffles can slide back and forth on the inner wall of the inspection roadway 6. The shutter can position the amplitude of rotation of the first guard gate 12 when it is opened or closed. The blocking effect of the first protective door 12 on the space on the left side and the right side of the door is enhanced by the arrangement of the baffle, and the safety protection effect is improved.
Preferably, the baffle is also at a height from the ground, which height is set to accommodate the smooth passage of the multiple telescopic rods 21.
Preferably, the rocket projectile comprises a solid warhead, a fuel tank and a drive tank connected in sequence from top to bottom. The fuel cabin comprises a cabin body, an electric heating device and a constant pressure breaking device. The electric heating device and the constant pressure rupture device are respectively connected with the solid warhead connecting end and the driving cabin connecting end of the cabin body. The fuel tank body is filled with liquid carbon dioxide. The electric heating device comprises a heating powder column, a igniting powder head, a constant current source, a power supply and a plug. The igniting powder head is embedded at one end of the heating powder column. The heating powder column is arranged along the axial direction of the cylindrical shell, the embedded end of the igniting powder head is a near convex arc-shaped sealing plate end, and the constant current source can control the power-on time. The power supply is connected with the outer side of the corresponding convex arc-shaped sealing plate in the cylindrical shell. The igniting powder head is connected with the constant current source through a cable passing through the blockage. The plug is connected with the center of the convex arc-shaped sealing plate in a sealing way, and a liquid carbon dioxide injection port is arranged on the plug. The constant current source can set the energizing and continuous energizing time through the wireless remote controller, and the power supply is a storage battery or a high-energy battery pack. The wireless remote controller is used for setting the power-on and the duration power-on time of the constant current source of the electric heating device, so that the heating grain can supply energy for the phase change of the liquid carbon dioxide. When the pressure generated by the liquid carbon dioxide phase-change gas exceeds the bearing limit of the constant pressure rupture device, the high-pressure carbon dioxide gas is ejected from the nozzle of the driving cabin from the constant pressure rupture disc which breaks through the constant pressure rupture device to generate kinetic energy, so that the rocket shell is separated from the launching frame to collide with a preset collision target.
The following describes a mining method of a high drop shaft provided by the application:
in actual use, the worker carries the rocket bomb device into the inspection roadway 6. Both safety doors in the inspection gallery 6 are closed. After the worker descends to the inspection roadway 6, the switch is opened, and the electric energy stored by the wind power generation module is communicated to each electric device.
The second protective door 19 is opened to enter between the two safety doors, and the observation equipment rack 14 positioned on the first protective door 12 is used for descending into the drop shaft for observation. Two observation devices 16 on the observation device frame 14 observe the blocking condition at the two ends of the drop shaft respectively. The observation device 16 acquires the in-high pass obstruction heading information.
The operator can view what is observed by the observation device 16 through a wall-mounted display device to determine whether the blocking position is above or below the examination level 6.
After the inspection is completed, the worker installs the mounting bracket 25 on the first barrier door 12 depending on the position of the blocking position. The rocket projectile installation direction meets the requirement of aligning the rocket projectile with the blocking position in the high drop shaft.
After the installation of the mounting bracket 25, the worker returns to the rear of the second barrier door 19 to close the second barrier door 19. At this time, the observation device 16 acquires the blockage azimuth information in the high pass, and the second protection door 19 is in a closed state, so that the safety of the staff is ensured.
The electronic terminal instructs the first protection door 12 to switch from the current first closed state to the second closed state, so that the multi-section telescopic rod 21 positioned on the first protection door 12 transfers the rocket shell on the rod body to the high drop shaft channel 2.
Because the high dust environment inside the drop shaft enters the area between the safety doors during the opening of the first protection door 12, the worker can first open the dust settling device to perform dust settling treatment on the space between the second protection door 19 and the first protection door 12.
After the dust fall process, the worker can open the second protective door 19 and go to the first protective door 12 to determine whether the rocket projectile is in place.
Under the condition that the operator observes that the mounting frame 25 does not extend smoothly, the vibration device can be started to vibrate the sliding groove plate and the mounting frame 25 so as to promote the mounting frame 25 to extend smoothly.
And the wireless remote controller operated by a worker controls the electric heating device to continuously work for a set time. Or a worker controls the electric heating device to continuously work for a set time on the electronic terminal. After the setting, the worker returns to the rear of the second barrier door 19 to close the second barrier door 19.
The electric heating device continuously works for a set time, the rocket shell supplies energy for the phase change of the liquid carbon dioxide in the fuel cabin through the electric heating device, the high-pressure carbon dioxide gas after the phase change of the liquid carbon dioxide is utilized to break the constant pressure breaking device and then rushes out of the driving cabin, and the kinetic energy generated by the high-pressure carbon dioxide enables the rocket shell to be rapidly emitted to impact the blocking body in the drop shaft, so that the blocking body falls down after being disassembled.
The multi-section telescopic rod 21 after the rocket projectile is released is not influenced by the gravity of the rocket projectile any more, and is retracted to a shorter length under the action of the elastic component in the rocket projectile. The multi-section telescopic rod 21 is prevented from being broken by the ore falling after the explosion.
After the blockage is dredged, the air quantity in the drop shaft is greatly reduced. The wind power generation module can acquire the wind quantity information in the high drop shaft channel 2. When the air volume information meets a preset safe air volume threshold, the electronic terminal instructs the first protection door 12 to reversely switch from the second closed state to the first closed state, so that the multi-section telescopic rod 21 separated from the rocket projectile is recovered into the inspection roadway 6.
It should be noted that the above-described embodiments are exemplary, and that a person skilled in the art, in light of the present disclosure, may devise various solutions that fall within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present description and drawings are illustrative and not limiting to the claims. The scope of the application is defined by the claims and their equivalents.
Claims (9)
1. An auxiliary system for guaranteeing safety of constructors in a high drop shaft is characterized by at least comprising an inspection gallery (6) and a plurality of telescopic rods (21) provided with rocket projectiles, wherein the inspection gallery (6) is communicated to the high drop shaft channel (2) through an inspection inclined gallery (7) to provide a movable channel of the telescopic rods (21) after the telescopic rods are separated from the inspection gallery (6), when the telescopic rods (21) are positioned in the inspection inclined gallery (7), the rocket projectiles are driven to slide downwards under the action of self weight by utilizing the height difference of the two ends of the inspection inclined gallery (7) in the vertical direction, the telescopic rods (21) extend and are stretched, a first protective door (12) which is arranged in the inspection gallery (6) in an openable manner can drive the telescopic rods (21) to move back and forth on the side where the inspection gallery is positioned and the high drop shaft side,
the high drop shaft comprises a second protective door (19), the second protective door (19) is arranged in the inspection gallery (6), and is closer to one side of the inspection auxiliary shaft channel (1) relative to the first protective door (12), and at least one dust falling device is arranged on the inner wall of the inspection gallery (6) between the two protective doors.
2. Auxiliary system according to claim 1, characterized in that said inclined inspection roadway (7) is provided with a support plate for sliding guiding said telescopic rods (21), said support plate being capable of reciprocating within a predetermined range with respect to said inclined inspection roadway (7) to minimize the residual amount of ore or dust on the surface of said support plate.
3. An assistance system as claimed in claim 2, wherein the carrier plate is configured to shake slightly against the inspection chute under impact from blast impact or ore impact against the chute wall during unloading or unblocking.
4. An auxiliary system according to claim 3, characterized in that the inner wall of the inspection inclined roadway (7) below the bearing plate is provided with a vibration device, and the vibration device is started to perform vibration treatment on the chute plate and/or the multi-section telescopic rod (21) so as to promote the multi-section telescopic rod (21) to extend smoothly.
5. An auxiliary system according to claim 4, wherein the telescopic multi-section rod (21) is configured to be shortened by elastic release action of elastic means located inside the rod body of the rocket projectile after it has been detached from the rod body.
6. Auxiliary system according to claim 5, characterized in that one end of the multi-section telescopic rod (21) is provided with a mounting frame for fixing the rocket projectile, the mounting frame (25) is detachably connected to the multi-section telescopic rod (21), and the mounting frame (25) can be turned over and then mounted on the multi-section telescopic rod (21) so that the rocket projectile after or before turning corresponds to the upper or lower side of the high drop shaft respectively.
7. Auxiliary system according to claim 6, characterized in that it comprises at least a first protection door (12) mounted in the examination alley (6) so as to be openable and closable, a plurality of telescopic rods (21) being mounted on the first protection door (12).
8. The auxiliary system according to claim 7, wherein at least one of the guard gates is fixed to the inspection roadway (6) by a rotating shaft (20), both ends of the rotating shaft (20) are rotatably connected to upper and lower inner walls of the inspection roadway (6), respectively, and the rotating shaft (20) is disposed at a position where a central axis of the guard gate is located.
9. An auxiliary method for guaranteeing safety of constructors in a high drop shaft is characterized by at least comprising the following steps:
a checking gallery (6) and a checking inclined gallery (7) are arranged, and the checking gallery (6) is communicated to the high drop shaft channel (2) through the checking inclined gallery (7);
a plurality of telescopic rods (21) provided with rocket bullets are arranged in the inspection roadway (6), and the telescopic rods (21) enter the inspection inclined roadway (7) after being separated from the inspection roadway (6);
when the multi-section telescopic rod (21) is positioned in the inspection inclined roadway (7), the height difference of the two ends of the inspection inclined roadway (7) in the vertical direction is utilized to promote the rocket projectile to slide downwards under the action of the self weight of the rocket projectile, the multi-section telescopic rod (21) extends and stretches, the first protective door (12) which can be installed in the inspection roadway (6) in an opening and closing way can be opened and closed, the multi-section telescopic rod (21) can be driven to move back and forth at the side where the inspection roadway is positioned and the side where the high drop shaft is positioned at the same time,
the high drop shaft comprises a second protective door (19), the second protective door (19) is arranged in the inspection gallery (6), and is closer to one side of the inspection auxiliary shaft channel (1) relative to the first protective door (12), and at least one dust falling device is arranged on the inner wall of the inspection gallery (6) between the two protective doors.
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| CN202111212567.1A CN113756821B (en) | 2020-04-28 | 2020-04-28 | Auxiliary system and method for guaranteeing safety of constructors in high drop shaft |
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| CN202010352845.2A CN111535819B (en) | 2020-04-28 | 2020-04-28 | High drop shaft and mining method using same |
| CN202111212567.1A CN113756821B (en) | 2020-04-28 | 2020-04-28 | Auxiliary system and method for guaranteeing safety of constructors in high drop shaft |
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| CN202111212567.1A Active CN113756821B (en) | 2020-04-28 | 2020-04-28 | Auxiliary system and method for guaranteeing safety of constructors in high drop shaft |
| CN202111213719.XA Active CN113756822B (en) | 2020-04-28 | 2020-04-28 | High drop shaft blocking condition observation system and observation method |
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| CN112874785B (en) * | 2021-01-22 | 2024-04-26 | 安徽太平矿业有限公司 | Device and method for treating drop shaft blockage |
| CN113217088B (en) * | 2021-05-26 | 2024-05-14 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for preventing and treating blockage of high-depth drop shaft |
| CN118049213B (en) * | 2024-04-03 | 2024-08-16 | 宜昌华西矿业有限责任公司 | Mine deep hole drop shaft measuring device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113756822B (en) | 2024-04-09 |
| CN111535819A (en) | 2020-08-14 |
| CN113756822A (en) | 2021-12-07 |
| CN111535819B (en) | 2021-11-30 |
| CN113756821A (en) | 2021-12-07 |
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