CN111622803A - Mining method for broken ore body - Google Patents
Mining method for broken ore body Download PDFInfo
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- CN111622803A CN111622803A CN202010741155.6A CN202010741155A CN111622803A CN 111622803 A CN111622803 A CN 111622803A CN 202010741155 A CN202010741155 A CN 202010741155A CN 111622803 A CN111622803 A CN 111622803A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
- E21F15/04—Stowing mats; Goaf wire netting; Partition walls
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Abstract
The invention provides a mining method for broken ore bodies, which relates to the technical field of mining industry and comprises the following steps: tunneling in a direction perpendicular to the direction of the ore body to form a first access; arranging a baffle piece at one side of the first access way close to the area to be mined; filling the first access to form a filling layer; removing the baffle piece to form a compensation space between the filling layer and the area to be mined; and performing wall blasting on the area to be mined in the compensation space to form a second access way in the area to be mined. The first access way is generated in a tunneling mode, blasting points are distributed in the compensation space along the length direction of the first access way, blasting is carried out laterally to the compensation space, tunneling mining can be converted into lateral ore caving, the ore breaking mode is changed, blasting efficiency is improved, and accordingly blasting cost is saved and mining efficiency is effectively improved.
Description
Technical Field
The invention relates to the technical field of mining industry, in particular to a mining method for crushing ore bodies.
Background
Because the occurrence conditions of ore beds are very complex, the properties of ores and surrounding rocks are variable, and new equipment and materials are continuously emerged along with the development of scientific technology, new processes are gradually improved, some old mining methods with low efficiency and high labor intensity are correspondingly eliminated, and various mining methods which are suitable for the occurrence conditions of specific ore blocks are innovated in practice, for example, for broken ore body mining, the commonly used mining methods comprise an upward access filling mining method, a downward access filling mining method, a pre-controlled top small-segment filling mining method, an environment reconstruction small-segment filling mining method and the like.
In the traditional mining process of the broken ore body, tunneling mining is mostly adopted. In mining, the blasting efficiency is low, which is not favorable for the high efficiency of mining operation.
Disclosure of Invention
The invention aims to provide a mining method for broken ore bodies, aiming at the defects in the prior art, so as to improve the efficiency of mining aiming at the broken ore bodies.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
in one aspect of the embodiments of the present invention, a mining method for crushing ore bodies is provided, including:
tunneling in a direction perpendicular to the direction of the ore body to form a first access;
arranging a baffle piece at one side of the first access way close to the area to be mined;
filling the first access to form a filling layer;
removing the baffle piece to form a compensation space between the filling layer and the area to be mined;
and performing wall blasting on the area to be mined in the compensation space to form a second access way in the area to be mined.
Optionally, the area to be mined comprises a plurality of sub-areas which are arranged in sequence in a direction perpendicular to the direction of the ore body, and each sub-area is used for forming a corresponding access; the wall blasting of the area to be mined in the compensation space to form a second access path in the area to be mined comprises the following steps: performing wall blasting on the area to be mined in the compensation space to form a corresponding second access in a sub-area adjacent to the first access;
judging whether each sub-area forms a corresponding second access;
if not, arranging a baffle piece on one side of the second access way close to the area to be mined;
filling the second access and forming a filling layer;
removing the baffle piece to form a compensation space between the filling layer and the area to be mined;
and performing wall blasting on the area to be mined in the compensation space to form a corresponding second access in the next sub-area, and judging whether each sub-area forms a corresponding second access again.
Optionally, the width of the compensation space along the direction of the ore body is 0.8 to 1 meter.
Optionally, the barrier comprises a bladder with a chamber and a filler; the bag body is provided with an opening and a cover body for covering the opening, and the filler is filled in the cavity of the bag body through the opening so as to enable the bag body to be in a filling state.
Optionally, the shape of the balloon in the inflated state is a cuboid shape; a plurality of internal ribs are arranged on the inner peripheral wall of the bag body.
Optionally, the outer wall of the bladder has a plurality of outer ribs.
Optionally, outer strengthening rib is strip or linear, and a plurality of outer strengthening ribs set up along the periphery wall equipartition interval of utricule.
Optionally, the number of the capsules is multiple; adjacent bladders are connected by a connecting piece.
Optionally, the filler is a gas.
Optionally, the material of utricule is the vinyl fiber material.
The beneficial effects of the invention include:
the invention provides a mining method for broken ore bodies, which comprises the following steps: and (3) tunneling the vertical ore body by a preset width, completing stoping while tunneling, and forming a first access in a mining empty area after the stoping is finished. And arranging a baffle piece at one side of the first access way close to the area to be mined, and using the baffle piece to occupy a part of space of the first access way, which is contacted with the area to be mined. After the barrier is set, the space left in the first access way is refilled and maintained, and after the refilled substance reaches the preset strength, the substance is used as a filling layer. Then, a compensating space is formed between the pack and the panel while the spacer is removed. The blast holes are distributed on the wall surface of the area to be mined in the supplementary space, the explosive is filled, after blasting is carried out, a second access can be formed in the area to be mined, namely, the first access is generated in a tunneling mode, blasting points are distributed in the compensation space along the length direction of the first access, blasting is carried out laterally to the compensation space, tunneling mining can be converted into lateral ore caving, the ore falling mode is changed, blasting efficiency is improved, and therefore blasting cost is saved, and mining efficiency is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic flow diagram of a method of broken ore body mining according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a crushed ore body used in a crushed ore body mining method according to an embodiment of the present invention;
fig. 3 is a second schematic structural diagram of a crushed ore body used in a crushed ore body mining method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a barrier used in a method for mining a broken ore body according to an embodiment of the present invention;
fig. 5 is a second schematic structural diagram of a barrier used in a method for mining a broken ore body according to an embodiment of the present invention.
Icon: 100-contact lane; 210-a first route; 220-a second sub-region; 230-a third sub-region; 240-fourth subregion; 250-upper layer filling body; 260-lower ore body; 300-a barrier; 310-inner reinforcing ribs; 320-outer reinforcing ribs; 330-air inlet and outlet; 400-connecting piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. It should be noted that, in the case of no conflict, various features in the embodiments of the present invention may be combined with each other, and the combined embodiments are still within the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The rapid development of modern society depends on the development and utilization of mining energy. The mining energy is mainly energy research taking mineral resources as main development objects, most of the mining energy is obtained from the nature, and the mining energy is a material basis of human activities. Mineral resources are products of earth crust in the long-term formation, development and evolution process, and are formed by gathering natural minerals under certain geological conditions through certain geological action. Different geological events may result in different types of minerals. However, because the occurrence conditions of ore beds are very complex, the properties of ores and surrounding rocks are variable, and new equipment and materials are continuously emerged along with the development of science and technology, new processes are gradually improved, some old mining methods with low efficiency and high labor intensity are correspondingly eliminated, and various mining methods which are suitable for the occurrence conditions of specific ore blocks are innovated in practice, for example, for broken ore body mining, the commonly used mining methods comprise an upward access filling mining method, a downward access filling mining method, a pre-controlled top small-segment filling mining method, an environment reconstruction small-segment filling mining method and the like. In the traditional mining process of the broken ore body, the excavation type mining or the pre-excavation cutting engineering is mainly used as a blasting compensation space and the like. In the process of mining, the blasting efficiency is low, and the high efficiency of mining operation is not facilitated. Based on the basis, the application provides a mining method for broken ore bodies, and aims to improve the conditions of low existing blasting efficiency and mining efficiency.
In one aspect of the embodiments of the present invention, referring to fig. 1, there is provided a mining method for crushing ore body, including: tunneling in a vertical ore body direction to form a first access path 210; a baffle piece 300 is arranged on one side of the first access road 210 close to the area to be mined; filling the first channel 210 to form a filling layer; removing the barriers 300 to form a compensation space between the pack-age and the area to be mined; and performing wall blasting on the area to be mined in the compensation space to form a second access way in the area to be mined.
For example, as shown in fig. 2 and 3, the entire ore body may be divided into a plurality of extraction zones according to the planned mining area, and each extraction zone may be connected to another extraction zone through a communication channel 100. Each stoping area can be further divided into a certain number of routes according to a stoping sequence, namely, a plurality of routes in each stoping area are arranged according to a certain sequence, stoping of each route is completed in sequence according to the arrangement sequence during mining, and when the stoping of the last route is completed, stoping of the area is completed. For a plurality of extraction areas, extraction can be carried out according to a mode of carrying out extraction simultaneously, so that the production operation of the extraction areas is not interfered with each other, meanwhile, the independent management of each extraction area is realized, the complexity of production organization management is effectively simplified, and the high efficiency of the management during the whole ore body extraction is ensured.
For a plurality of extraction areas, the mining method for the broken ore body can be used for mining the extraction areas simultaneously, and the specific method for mining each extraction area is as follows:
s010: the vertical ore body is driven to form a first path 210.
Illustratively, as shown in fig. 2, mining is performed from the leftmost access in the leftmost mining area, and mining is performed in a tunneling manner in a direction perpendicular to the direction of the ore body, that is, from the lower wall to the upper wall in fig. 2, wherein before tunneling, fixed-point blasting is required, mining is performed in a manner of tunneling while blasting, and after the mining is completed, the mining area forms a first access 210.
S020: a barrier 300 is provided on the side of the first access path 210 adjacent the area to be mined.
For example, the barrier 300 is provided in the first access path 210 formed in S010, and the barrier 300 may be positioned to be closely attached to the wall surface of the first access path 210 on the side close to the area to be mined, and the length of the barrier 300 should be identical to the length (horizontal thickness of the ore body) of the first access path 210. The space on the side of the first access road 210 close to the area to be mined is occupied by the blocking piece 300, and a foundation is laid for forming a compensation space in the S040. It should be noted that the area to be mined in this application refers to an area that has not been mined in each extraction area, for example, in fig. 2, the extraction area on the leftmost side includes eight routes, when the extraction of the first route 210 is completed, the area to be mined includes seven routes that are not mined, and when the extraction of the second route closest to the first route 210 is also completed, the area to be mined includes six routes that are not mined. Namely, the area of the area to be mined is dynamically changed, and when the mining of each access road in the whole mining area is finished, the area of the area to be mined in the mining area is zero.
S030: the first via 210 is filled to form a filling layer.
For example, after the barrier 300 is completely installed, in order to ensure the safety of the next route during recovery, the remaining space of the first route 210 (i.e., the space occupied by the barrier 300 is removed) may be filled, and the filling material may be one of water sand filling, tailing filling, and cemented filling.
After filling, the material is cured until the overall strength reaches the designed strength, and a filling layer is formed. The filling layer is arranged, and the filling layer can be used for limiting displacement and deformation of the surrounding rock, so that damage of moving of the surrounding rock is relieved, and the degree of ground surface subsidence is reduced. The filling layer changes the ore pillar from a one-way or two-way stress state to a three-way stress state, thereby improving the strength of the ore pillar. Meanwhile, after the stoping space is filled, elastic strain energy accumulated in the surrounding rock can be reduced, and therefore the capability of the underground structure for resisting dynamic load is improved.
S040: the barriers 300 are removed to create a compensating space between the pack and the panel.
As an example, after the pack formation, the barrier 300 disposed between the pack and the panel may be removed, such that a compensating space can be formed between the pack and the panel, the size of the space occupied by the barrier 300 corresponding to the size of the subsequently formed mining space. Therefore, the adjustment of the size of the subsequent mining space can be realized by changing the width of the partition 300 from left to right in fig. 2 (since the length and height of the wall surface of the first access passage 210 after the mining is finished are fixed values, that is, the length and height of the corresponding partition 300 in the use state are also fixed, when the compensation space is adjusted, the adjustment can be realized by adjusting the width of the partition 300).
It should be noted that the barrier 300 should include two states, one of which is a use state, and correspondingly, it should be disposed on the wall surface of the access way, so that when it is in the use state, it should have a certain volume, i.e. a width from left to right in fig. 2, and when it is in the use state, it should have a certain structural strength, and it can keep its basic structure unchanged or slightly deformed while the first access way 210 is being filled and maintained, so as to ensure that it always occupies a certain volume (the volume may be a preset volume) in the space of the first access way 210; the other is a dismantling state, namely when the compensation space needs to be formed, the space occupied by the compensation space can be released by dismantling the compensation space, so that the released space, namely the compensation space, can be used as a working space in the lateral ore caving process in the subsequent S050.
S050: and performing wall blasting on the area to be mined in the compensation space to form a second access way in the area to be mined.
For example, after the compensation space is formed between the filling layer and the stope in S040, the compensation space may be used as a blast compensation space in the second route lateral caving. That is, in this case, the tunneling blasting of the first route 210 in fig. 2 is changed to the lateral ore caving, that is, the original tunneling from the lower tray to the upper tray is changed to the lateral ore caving from the left to the right. The ore breaking mode is changed, the blasting efficiency is improved, and further the blasting cost is saved, and meanwhile, the mining efficiency is effectively improved.
Optionally, the area to be mined includes a plurality of sub-areas arranged in sequence in a direction perpendicular to the direction of the ore body (i.e., in a direction from left to right in fig. 2), and each sub-area is used for forming a corresponding approach; the wall blasting of the area to be mined in the compensation space to form a second access path in the area to be mined comprises the following steps: performing wall blasting on the area to be mined in the compensation space to form a corresponding second access way in a sub-area adjacent to the first access way 210; judging whether each sub-area forms a corresponding second access; if not, arranging a baffle piece 300 at one side of the second access way close to the area to be mined; filling the second access and forming a filling layer; removing the barriers 300 to form a compensation space between the pack-age and the area to be mined; and performing wall blasting on the area to be mined in the compensation space to form a corresponding second access in the next sub-area, and judging the second access corresponding to each sub-area again.
Illustratively, for example, in fig. 2 and 3, the upper level of the overall ore body is the upper filling volume 250, the lower level is the lower ore body 260, and the middle is the ore body to be mined. The whole ore body is sequentially divided into three stoping areas from left to right, each stoping area is also divided into eight routes from left to right, and during stoping, stoping is started from the leftmost route (the first route 210) in each stoping area, and then stoping is sequentially performed to the right. After the first approach 210 is formed, the area to be mined comprises the remaining seven sub-areas.
In the above embodiment S050, when the area to be mined corresponding to each extraction area in fig. 2 is seven sub-areas, the method may further specifically include (for convenience of description, in this embodiment, the remaining seven sub-areas are respectively called a second sub-area 220 corresponding to a second route, a third sub-area 230 corresponding to a third route, a fourth sub-area 240 corresponding to a fourth route until an eighth sub-area corresponds to an eighth route):
lateral caving is performed in a compensation space formed between a filling layer formed by the first access 210 and a to-be-mined area (which comprises seven sub-areas at this time), and a second sub-area 220 adjacent to the first access 210 is mined so that a second access is formed corresponding to the mined-out area after mining. At this time, it is determined whether the second to eighth sub-regions form the corresponding second to eighth routes (one-to-one correspondence).
If the result of the determination is negative (at this time, six sub-regions are not extracted), the blocking piece 300 is continuously disposed on the wall surface of one side of the third sub-region 230 adjacent to the second route (the blocking piece 300 disposed here may be the blocking piece 300 removed from the first route 210, so that the blocking piece 300 is in a use state again, or a product having the same structure as the blocking piece 300 disposed in the first route 210 is disposed again), and the requirement for disposing the blocking piece 300 is similar to the requirement set in the first route 210, which is not described herein again. Then, the remaining space in the second access is filled, and the filling requirement is similar to the method when the first access 210 is filled, which is not described herein again. The blocking piece 300 arranged between the filling layer filled in the second route and the third sub-area 230 is removed to form a compensation space between the filling layer filled in the second route and the third sub-area 230, then lateral blasting ore caving is continuously carried out in the compensation space to the right, and after the third route is formed in the third sub-area 230, whether the fourth to eighth routes are formed in the fourth to eighth sub-areas respectively is continuously judged.
If not (at this time, five subregions are not extracted), the baffle 300 is continuously arranged on the wall surface of one side of the fourth subregion 240 adjacent to the third access path, and then the remaining space in the third access path is filled, and the filling requirement is the same. And (3) dismantling the blocking piece 300 arranged between the filling layer filled in the third route and the fourth sub-area 240 to form a compensation space between the filling layer filled in the third route and the fourth sub-area 240, then continuing to perform lateral ore caving to the right in the compensation space, forming a fourth route after the stoping of the fourth sub-area 240 is finished, then performing judgment, and similarly according to the method, until the fifth sub-area forms a fifth route, the sixth sub-area forms a sixth route, the seventh sub-area forms a seventh route, and after the eighth sub-area forms an eighth route, the whole stoping area is completely stoped.
The plurality of sub-areas correspond to the plurality of second routes, that is, the sub-areas that have not been mined are sub-areas, and after the sub-areas are mined, the mined-out areas are formed to correspond to the second routes. For example, in fig. 2, the sub-regions are divided into seven sub-regions, and after the seven sub-regions are completely mined, seven second routes may be correspondingly formed, that is, each sub-region corresponds to one second route.
Optionally, the width of the compensation space along the direction of the ore body is 0.8 to 1 meter.
For example, the compensation space runs along the ore body, namely the width from left to right is in the range of 0.8 to 1 meter, so that the distance can form good compensation for lateral blasting while ensuring that the lateral caving operation has a proper space, and the influence on the surrounding environment is reduced as much as possible. It should be noted that, since the width of the compensation space and the width of the barrier 300 in the use state have a certain correspondence relationship, the width of the barrier 300 should also be set within a range of 0.8 to 1 meter.
Optionally, the barrier 300 comprises a bladder with a chamber and a filler; the bag body is provided with an opening and a cover body for covering the opening, and the filler is filled in the cavity of the bag body through the opening so as to enable the bag body to be in a filling state.
For example, the barrier 300 may be a capsule having a chamber, and the capsule may be filled with a filler. In use, the filling material may be filled into the cavity through the opening provided in the capsule, so as to gradually expand the outer surface of the capsule until the capsule is filled to the full state (corresponding to the use state of the previous embodiment), at which time the cover body is closed, so as to keep the outer surface wall thereof completely expanded and having a certain volume (corresponding to the size and shape of the compensation space). At this time, the balloon in the inflated state is arranged in the region where the barrier 300 is arranged. When the partition piece 300 needs to be removed, the cover body can be taken down or opened, the filler filled into the cavity inside the capsule body is taken out, the space occupied by the capsule body is gradually shrunk along with the gradual reduction of the amount of the filler inside the capsule body, and at the moment, the capsule body can be taken down easily, so that the partition piece 300 is removed. Set up the form that the utricule adds the filler, can be when separating shelves piece 300 by the filling layer with treat that the mining area is tight completely, through the form of taking out the filler of inside for full utricule atrophy gradually, the operating personnel of being convenient for demolish, when effectively having reduced the degree of difficulty of demolising shelves piece 300, improved the efficiency of operation, also make the side direction collapse ore deposit and can realize. When the fillers in the capsule body are repeatedly filled and taken out, repeated recycling of operations on different sub-areas can be realized by using only one set of capsule body, and the mining cost is effectively reduced.
Optionally, the shape of the balloon in the inflated state is a cuboid shape; a plurality of internal ribs 310 are provided on the inner circumferential wall of the bladder.
For example, in order to ensure the structural strength of the bladder in the inflated state, and meanwhile, when the inner filler is made of a soft and easily-changeable material, a plurality of inner ribs 310 may be disposed on the inner peripheral wall of the bladder, and the shape of each inner rib may be a long strip in fig. 4, or may be a triangular strip, so as to further improve the structural strength of the bladder in the inflated state, and have certain guarantee for meeting the use requirement of the subsequently formed compensation space. The outer shape of the balloon in the inflated state may be that of a cuboid, for example as shown in figures 4 and 5, the two sides of which are respectively shown, the shape of the corresponding compensation space formed also being that of a cuboid. For example, in fig. 4, a plurality of ribs are formed on the upper end surface, the lower end surface, the left side surface and the right side surface of the capsule, respectively.
Optionally, a plurality of outer ribs 320 are formed on the outer wall of the capsule.
Illustratively, in order to further improve the structural strength of the balloon in the inflated state and ensure the formation of the compensation space, as shown in fig. 4 and 5, a plurality of outer ribs 320 may be further disposed on the outer wall of the balloon. The outer ribs 320 are in the shape of a ribbon or a line.
Optionally, the outer ribs 320 are in the shape of a strip or a line, and the outer ribs 320 are uniformly spaced along the outer peripheral wall of the capsule body. For example, as shown in fig. 4, a plurality of outer ribs are provided at regular intervals on the outer peripheral wall of the rectangular parallelepiped.
For example, when the capsule is in the filling state, the external reinforcing ribs 320 on the capsule are in the shape of a strip or a line, and the strip or the line can enhance the structural strength of the capsule and avoid the phenomenon of stress concentration.
Optionally, the number of the capsules is multiple; adjacent bladders are connected by a connector 400.
Illustratively, to ensure ease of installation and removal, the barrier 300 may also include multiple bladders. The attachment and detachment of the barrier 300 is achieved by controlling whether each bladder is in an inflated state. When the installation, can be so that all pack in a plurality of sacks and be in sufficient state, connect adjacent utricule fixedly through connecting piece 400, accomplish the concatenation to a plurality of utricules to form an holistic shelves piece 300. The connecting member 400 may be a buckle as shown in fig. 4, or may be a bolt, etc. As shown in fig. 4 and 5, a connector 400 may be provided on each end surface of the rectangular capsule, thereby securing the strength and stability of the barrier 300 when connected. The stability of the connection can be improved by disposing the connection member 400 at the outer reinforcement 320 of the capsule.
Optionally, the filler is a gas.
For example, the filling material may be a gas, and the switching between the use state and the removal state is performed by inflating or deflating the inner space of the capsule. The structural strength of the barrier 300 can also be adjusted by controlling the pressure in the chamber. In addition, in other embodiments of the present application, the filler may also be water or a soft material, which may ensure a certain structural strength while achieving convenient filling and removal. For example, in fig. 5, an air inlet and outlet 330 is provided on the capsule.
Optionally, the material of utricule is the vinyl fiber material.
In an example, the capsule body is made of a vinyl fiber material (or other wear-resistant flexible materials), so that the tensile tearing strength can be effectively ensured, and the capsule has the performances of water resistance, corrosion resistance, acid and alkali resistance, wear resistance, aging resistance, cold resistance, heat resistance and the like, and is foldable and convenient to use.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method of mining a broken ore body, comprising:
tunneling in a direction perpendicular to the direction of the ore body to form a first access;
arranging a baffle piece on one side of the first access way close to the area to be mined;
filling the first access to form a filling layer;
removing the barrier piece to form a compensation space between the filling layer and the area to be mined;
and performing wall blasting on the area to be mined in the compensation space to form a second access path in the area to be mined.
2. A method of broken ore body mining as claimed in claim 1, wherein the area to be mined comprises a plurality of sub-areas arranged in a sequence of vertical ore body runs, each sub-area being adapted to form a corresponding second approach; performing wall blasting of the area to be mined in the compensation space to form a second access path in the area to be mined comprises: performing wall blasting on the area to be mined in the compensation space to form a corresponding second access way in the sub-area adjacent to the first access way;
judging whether each sub-region forms a corresponding second access;
if not, arranging a baffle piece on one side of the second access way close to the area to be mined;
filling the second access and forming a filling layer;
removing the barrier piece to form a compensation space between the filling layer and the area to be mined;
and performing wall blasting on the area to be mined in the compensation space to form a corresponding second access in the next sub-area, and judging whether each sub-area forms a corresponding second access again.
3. A method of crushed ore body mining according to claim 1 or 2, characterised in that the compensating space has a width of 0.8 to 1 metre along the run of the ore body.
4. A method of broken ore mining as claimed in claim 1, wherein the barrier comprises a bladder having a chamber and a filler; the bag body is provided with an opening and a cover body covering the opening, and the filler is filled in the cavity of the bag body through the opening so as to enable the bag body to be in a filling state.
5. A method of broken ore body mining as claimed in claim 4, wherein the shape of the capsule in the inflated condition is that of a cuboid; a plurality of internal ribs are provided on the inner peripheral wall of the bladder.
6. A method of broken ore body mining as claimed in claim 5, wherein there are a plurality of external reinforcing ribs on the outer wall of the capsule.
7. A method of broken ore body mining as claimed in claim 6, wherein said outer reinforcing ribs are in the form of strips or lines, and a plurality of said outer reinforcing ribs are spaced apart from one another along the peripheral wall of said capsule.
8. A method of crushed ore body mining as claimed in any one of claims 4 to 7, wherein the capsule is plural; adjacent capsules are connected by a connecting piece.
9. A method of broken ore body mining as claimed in any of claims 4 to 7, wherein the filler is a gas.
10. A method of broken ore body mining as claimed in any of claims 4 to 7, wherein the bladder is of vinyl fibre material.
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| CN202010741155.6A CN111622803A (en) | 2020-07-29 | 2020-07-29 | Mining method for broken ore body |
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| CN202010741155.6A CN111622803A (en) | 2020-07-29 | 2020-07-29 | Mining method for broken ore body |
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| RU2418954C1 (en) * | 2010-01-14 | 2011-05-20 | Учреждение Российской академии наук Институт проблем комплексного освоения недр Российской академии наук (УРАН ИПКОН РАН) | Method to erect filling mass from consolidating stowing in subsurface mines |
| CN104453996A (en) * | 2014-12-24 | 2015-03-25 | 长沙矿山研究院有限责任公司 | Upward layered wall type bag filling mining method |
| CN106437718A (en) * | 2016-11-30 | 2017-02-22 | 长沙矿山研究院有限责任公司 | Active roof-contacted two-step strip-filling mining method |
| CN107339104A (en) * | 2017-08-03 | 2017-11-10 | 长沙矿山研究院有限责任公司 | Security personnel's curtain wall recovery method |
| CN109594986A (en) * | 2018-10-15 | 2019-04-09 | 贵州锦丰矿业有限公司 | A kind of foam type creates medium-length hole back production explosion collocation structure and its construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2418954C1 (en) * | 2010-01-14 | 2011-05-20 | Учреждение Российской академии наук Институт проблем комплексного освоения недр Российской академии наук (УРАН ИПКОН РАН) | Method to erect filling mass from consolidating stowing in subsurface mines |
| CN104453996A (en) * | 2014-12-24 | 2015-03-25 | 长沙矿山研究院有限责任公司 | Upward layered wall type bag filling mining method |
| CN106437718A (en) * | 2016-11-30 | 2017-02-22 | 长沙矿山研究院有限责任公司 | Active roof-contacted two-step strip-filling mining method |
| CN107339104A (en) * | 2017-08-03 | 2017-11-10 | 长沙矿山研究院有限责任公司 | Security personnel's curtain wall recovery method |
| CN109594986A (en) * | 2018-10-15 | 2019-04-09 | 贵州锦丰矿业有限公司 | A kind of foam type creates medium-length hole back production explosion collocation structure and its construction method |
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Application publication date: 20200904 |