CN117052402A - Construction method of sliding breaking system - Google Patents

Abstract

The application discloses a construction method of a sliding breaking system, which comprises the steps of firstly constructing a horizontal gallery and a chamber at a first position, a second position, a third position and a fourth position from top to bottom in the sliding breaking system, constructing a main drop shaft connecting gallery at the second position, constructing two connecting galleries at the third position, constructing a belt duct chamber connecting gallery at the fourth position, horizontally arranging an isolation steel plate at the second position to seal a main drop shaft mouth and one side of an unloading station, horizontally arranging a steel retaining wall at the third position, synchronously constructing at a first construction section, a second construction section and a third construction section, carrying out three-section parallel construction, and adopting a connecting measure project by adding the isolation steel plate.

Description

Construction method of sliding breaking system

Technical Field

The application relates to the technical field of a sliding breaking system, in particular to a construction method of the sliding breaking system.

Background

The information provided in this section is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventors, to the extent it is described in this section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present disclosure.

The underground mine sliding and breaking system is a key project in the construction period and the production period of the underground mine, is related to the formation of the whole mine production system, affects the production capacity of the whole mine, is particularly important for the daily production and stable operation of the mine, has a complex structure, is closely connected up and down, is mutually limited, has large respective digging and building engineering quantity and narrow construction space, is a primary task in the construction period of each mine, is conventionally constructed by a method of sequentially performing normal digging and tunneling construction from top to bottom and then sequentially supporting from bottom to top, has complex construction organization and long construction period, has great labor intensity of workers and has great safety risk in the working environment.

Disclosure of Invention

Aiming at the defects in the prior art, the application provides a construction method of a sliding breaking system, which aims to solve the problems of long construction period, high operation strength and poor safety in the prior art.

The above object of the present application is mainly achieved by the following technical solutions:

a method of constructing a walk-through system, the method comprising:

The sliding breaking system is used for constructing a horizontal gallery at a first position, a second position, a third position and a fourth position from top to bottom and a chamber;

constructing a main drop shaft connecting roadway at a second position, constructing two connecting roadways at a third position and constructing a belt channel chamber connecting roadway at a fourth position;

an isolation steel plate is horizontally arranged at the second position to block one side of the main wellhead and the unloading station, and a steel retaining wall is horizontally arranged at the third position;

performing expansion brushing to form a well at a first construction section between the first position and the second position, a second construction section between the second position and the third position and a third construction section between the third position and the fourth position;

and synchronously constructing in the first construction section, the second construction section and the third construction section to respectively finish the construction of the ore pass, the main pass, the upper ore bin, the crusher foundation and the lower ore bin.

Further, when the main drop shaft connecting roadway is constructed at the second position, the main drop shaft connecting roadway is widened to 6.4m horizontally at the second position so as to meet the size of slag discharging equipment of the main drop shaft and the arrangement of a lifting hanging system.

Further, when two connecting channels are constructed at the third position, a first unloading chamber and a second unloading chamber are constructed at the third position, full-section blasting construction connecting channels are adopted at the bottoms of the first unloading chamber and the second unloading chamber, the length of each connecting channel is 38m, the connecting channels are constructed to the bottom of a mine bin, the section height is 4m, the section width is 3m, and slag discharge of a forklift and a slag discharging truck is ensured.

Further, the isolation steel plate and the steel retaining wall are respectively fixedly connected with a steel plate with the thickness of 3cm by adopting 30T I-steel to form a retaining support.

Further, the second construction section is constructed by adopting a reverse well drilling machine in a full-section expanding and brushing mode.

Further, the third construction section adopts a reverse well drilling machine to perform construction in a step-by-step expansion brushing mode.

Further, the powder ore pass, the main pass and the upper ore bin are an integral vertical main pass, and a back drilling machine is adopted to construct the diameter of 1.4m respectively.

Further, when the first construction section, the second construction section and the third construction section are subjected to expansion brushing to form a well, blasting slag stones are freely lowered to the bottom in the drop shaft, free inclined piles formed by basic slag stones of a crusher in the third construction section are manually raked to a chute and then slid to the bottom of the drop shaft, and then slag is loaded and discharged by a loader.

And further, after the first construction section, the second construction section and the third construction section are subjected to expansion brushing and well formation, the temporary lifting hanging system is utilized to carry out manganese steel plate installation and support construction from bottom to top, and the manganese steel plate is utilized as a template to carry out reinforced concrete pouring during support.

Further, the first position is 780m below sea level reference, the second position is 930m below sea level reference, the third position is 1005m below sea level reference, and the fourth position is 1060m below sea level reference.

Compared with the prior art, the application has the advantages that:

the application firstly constructs a horizontal gallery and a chamber from top to bottom in a chute breaking system, constructs a main drop shaft connecting gallery in the second position, constructs two connecting galleries in the third position, constructs a belt gallery chamber connecting gallery in the fourth position, then horizontally sets an isolation steel plate to block one side of a main drop shaft mouth and an unloading station in the second position, horizontally sets a steel retaining wall in the third position, expands and brushes to form a well in a first construction section between the first position and the second position, a second construction section between the second position and the third position, and a third construction section between the third position and the fourth position, and then constructs in the first construction section, the second construction section and the third construction section synchronously, in order to accomplish the construction of powder ore pass, main pass and upper portion ore bin, breaker basis and lower part ore bin respectively, in the swift current broken system between first position to the fourth position, carry out three-section parallel construction, and the tunnelling respectively, support, install and be parallel to each other in space and time, the effectual vertical engineering of swift current broken system of having solved is concentrated, and the longer problem of time limit for a project, through increasing the isolation steel board, installation steel barricade, adopt the contact measure engineering, three-section engineering operation space is independent safer relatively, parallel construction can interconvert quickens the construction progress, reduce construction cost, guarantee construction safety simultaneously, it is slow to solve ordinary normal swift current broken system construction progress, the working strength is big, the problem of security is poor.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic flow chart of a construction method of a breaking system according to an embodiment of the present application;

FIG. 2 is a schematic construction diagram of a breaking system according to an embodiment of the present application;

FIG. 3 is a schematic plan view of a third position according to an embodiment of the present application;

in the figure: 101. a first position; 102. a second position; 103. a third position; 104. a fourth position; 201. isolating the steel plates; 202. steel retaining wall; 301. a main drop shaft; 302. a contact; 303. a chute; 304. a buffer tank; 401. an upper ore bin; 402. a lower ore bin; 403. a crusher foundation.

Detailed Description

The application is further described with reference to the drawings and specific examples. It should be noted that the description of these examples is for aiding in understanding the present application, but is not intended to limit the present application. Specific structural and functional details disclosed herein are merely representative of example embodiments of the application. This application may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.

Fig. 1 is a schematic flow chart of a construction method of a breaking system according to an embodiment of the present application, fig. 2 is a schematic flow chart of a construction method of a breaking system according to an embodiment of the present application, and fig. 3 is a schematic plan view of a third location according to an embodiment of the present application.

As shown in fig. 1, a method of constructing a breaking system, in certain embodiments, comprises:

the hydraulic breaking system is used for constructing a horizontal gallery and a chamber of a first position 101, a second position 102, a third position 103 and a fourth position 104 from top to bottom;

constructing a main drop shaft 301 connecting roadway at a second position 102, constructing two connecting roadways 302 at a third position 103 and constructing a belt channel chamber connecting roadway at a fourth position 104;

as shown in fig. 2, an isolation steel plate 201 is horizontally arranged at the second position 102 to block the mouth of the main drop shaft 301 and one side of the unloading station, and a steel retaining wall 202 is horizontally arranged at the third position 103;

performing expansion brushing to form a well at a first construction section between the first position 101 and the second position 102, a second construction section between the second position 102 and the third position 103, and a third construction section between the third position 103 and the fourth position 104;

the construction is synchronized in the first, second and third construction sections to finish the construction of the powder ore pass, the main pass 301 and the upper ore bin 401, the breaker foundation 403 and the lower ore bin 402, respectively.

As shown in fig. 2, specifically, firstly, a measure connecting channel for horizontally unloading a chamber and a main drop shaft 301 at a second position 102 is constructed, so that the measure connecting channel has the upper construction condition of the main drop shaft 301, meanwhile, a construction measure connecting channel 302 is added at a third position 103 to the bottom of a ore bin, a channel is provided for slag discharging of slag discharging channel construction of the main drop shaft 301, secondly, the slag discharging channel with the diameter of 3m is constructed for the main drop shaft 301 and the upper ore bin 401, one-time well forming technology construction of punching and blasting for many times is adopted, and 3-section expansion brushing construction is carried out on the main drop shaft 301 and the ore bin from top to bottom after the slag discharging channel construction is completed.

The first section of construction comprises the step of performing the work of expanding and brushing the part 27.22m above the buffer groove 304 of the main drop shaft 301 and the inclined drop path of the unloading station, and immediately performing the support construction of the main drop shaft 301 and the inclined drop path of the unloading station after the work of expanding and brushing the section of construction is completed.

And (3) tunneling the second section of construction main drop shaft 301 buffer groove 30118 m section, and supporting the section after tunneling and brushing of the buffer groove 304 section and the drop shaft section are completed.

In the third stage of construction, firstly, a steel retaining wall 202 with the height of 5m and the width of 8m is respectively arranged on the side of the rod type feeder chamber, so that slag Dan Diaoru is prevented from crushing the chamber during the tunneling and brushing of the upper ore bin 401, and the construction of the crusher foundation 403 is prevented from being influenced. After the upper ore bin 401 is tunneled, the rod type ore feeder chamber, the gate maintenance chamber and the upper ore bin 401 are supported from the third position 103 from bottom to top in sequence.

Then, the construction of the crusher foundation 403 and the lower ore bin 402 is awakened, firstly, a one-time well forming technology of punching and blasting for many times is adopted at the position of the material level hole of the crusher foundation 403 of the crushing chamber, the crusher foundation 403 of the section from the third position 103 to the fourth position 104 and a slag discharging channel with the diameter of 3m of the lower ore bin 402 are constructed, then the crusher foundation 403 is constructed by spreading and brushing from top to bottom, the spreading and brushing of the crusher foundation 403 is completed, the support is firstly carried out, and after the support of the crusher foundation 403 is completed, the spreading and brushing tunneling of the lower ore bin 402 is carried out, and the support construction is carried out.

As shown in fig. 2, in some embodiments, the working principle of the construction method of the present breaking system is: the horizontal gallery and chamber of the first position 101, the second position 102, the third position 103 and the fourth position 104 are firstly constructed in the hydraulic breaking system from top to bottom, the main drop shaft 301 connecting gallery is constructed in the second position 102, the third position 103 is constructed with two connecting passages 302, the fourth position 104 is constructed with a belt gallery connecting gallery, then the second position 102 is horizontally provided with an isolation steel plate 201 to seal the main drop shaft 301 opening and one side of the unloading station, the third position 103 is horizontally provided with a steel retaining wall 202 to be expanded and brushed into a well in the first construction section between the first position 101 and the second position 102, the second construction section between the second position 102 and the third position 103, the third construction section between the third position 103 and the fourth position 104, and then the first construction section, the second construction section and the third construction section are synchronously constructed, in order to accomplish the construction of ore pass, main drop shaft 301 and upper portion ore bin 401, breaker basis 403 and lower portion ore bin 402 respectively, in the swift current broken system between first position 101 to fourth position 104, three sections parallel construction is carried out, and the tunnelling respectively, the support, install mutually parallel in space and time, the alternate operation, the effectual vertical engineering of swift current broken system of having solved is concentrated, and the longer problem of time limit for a project, through increasing isolation steel sheet 201, install steel barricade 202, adopt the contact measure engineering, three sections engineering operation space is independent relatively safer, parallel construction can interconvert quickens the construction progress, reduce construction cost, guarantee construction safety simultaneously, it is slow to solve ordinary normal swift current broken system construction progress, the operation intensity is big, the problem of security difference.

Further, in some embodiments, when constructing the main drop shaft 301 joint lane at the second position 102, the main drop shaft 301 joint lane is widened horizontally to 6.4m at the second position 102 to meet the size of the slag discharging equipment of the main drop shaft 301 and the lifting hanging system arrangement.

Further, in some embodiments, when two connecting channels 302 are constructed at the third position 103, a first unloading chamber and a second unloading chamber are constructed at the third position 103, the connecting channels 302 are constructed at the bottoms of the first unloading chamber and the second unloading chamber by full-section blasting, the length of each connecting channel 302 is 38m, the connecting channels are constructed to the bottom of a mine bin, the section height is 4m, and the section width is 3m, so that a forklift and a slag car can slag through.

Further, in some embodiments, the isolation steel plate 201 and the steel retaining wall 202 are respectively a blocking support formed by fixedly connecting 30T I-steel with a steel plate with a thickness of 3 cm.

Further, in some embodiments, the second construction section is constructed in a full section spread brush using a reverse well drilling rig.

Further, in some embodiments, the third construction section is constructed using a reverse well drilling rig in a step-wise spread brush manner.

Further, in some embodiments, the fines pass, main pass 301, and upper bin 401 are an integral vertical main pass 301 and are each constructed with a diameter of 1.4m using a back-up drill.

Further, in some embodiments, when the first, second and third construction sections are subjected to expansion brushing to form a well, blasting slag stones are freely lowered to the bottom in the drop shaft, a free inclined pile formed by the slag stones on the crusher foundation 403 of the third construction section adopts manual slag raking to the chute and then slides to the bottom of the drop shaft, and then the loading machine is used for loading slag and discharging slag.

Further, in some embodiments, after the first construction section, the second construction section and the third construction section are subjected to expansion brushing and well formation, the temporary lifting hanging system is utilized to carry out manganese steel plate installation support construction from bottom to top, and the manganese steel plate is utilized as a template to carry out reinforced concrete pouring during support.

Further, in some embodiments, the first location 101 is 780m below sea level reference, the second location 102 is 930m below sea level reference, the third location 103 is 1005m below sea level reference, and the fourth location 104 is 1060m below sea level reference.

For convenience of explanation, the first position 101 is 780m horizontal relative to the sea level, the second position 102 is 930m horizontal relative to the sea level, the third position 103 is 1005m horizontal relative to the sea level, and the fourth position 104 is 1060m horizontal relative to the sea level.

Specifically, before actual construction, the following preparation of construction technique is performed:

1. carefully auditing, reading construction drawings and technical specifications.

2. According to engineering characteristics, organizations train management staff and constructors.

3. After the measurement is completed, the report is checked to the owners and supervision.

And ensures that the construction conditions are taken down:

1. pressing wind;

two 40m ground air compressor rooms are installed ³ And a 20m ³ The air compressor supplies air to the working surface, the air supply pipe supplies air to the underground working surface by adopting phi 128 x 4mm steel pipes, each middle section takes 4 inch steel pipes as main air supply pipes, 2 inch hoses are connected in a range of 20m from the working surface, the air distributor is connected in parallel, and the working surface is connected to the air distributor by adopting 1 inch hosesAnd the device is used for providing power for the pneumatic drill.

2. Supplying water;

-930m horizontal horsehead door is provided with a water tank, a water supply line suspended by the shaft, feeding each working surface. The water pipe in the tunnel adopts a steel pipe with the diameter of 50 multiplied by 3mm and is connected to the working surface constructed by the hydraulic breaking system.

3. Ventilating;

at present, the second position 102, the third position 103 and the fourth position 104 are communicated with a first auxiliary well, natural wind flow is formed, and the local ventilators are arranged on each working face in the construction of the breaking system, so that the ventilation requirement of the working face can be met.

4. Draining water;

the water for each work is discharged to the ground through the temporary water sump after being connected with a 2 inch drainage pipe by a FQW type air pump or WQY type submersible sewage pump to be deposited.

5. Transporting and discharging gangue;

the gangue is discharged by adopting a 30-type loader and a 10-t slag transport vehicle, or is shoveled into a gangue discharge drop shaft by adopting an electric shovel, then discharged to the ground through a 3# main shaft skip, and then is transported into a slag transport vehicle by a 50-type loader shovel, and is discharged to a specified slag discharge position of an owner.

6. Supplying power and lighting;

and (3) a power supply system: the underground substation is provided, meanwhile, working personnel of the tunneling working face carry mine lamps, and the tunneling working face is provided with waterproof projection lamps for illumination.

An illumination system: a 127V voltage is used downhole to provide illumination power.

7. Communication and signals;

a signal system formed by a dispatching room and a tunneling working face. The project department is provided with a set of program-controlled exchange communication system, and each middle horse head door is provided with an intrinsic safety telephone which can be directly communicated with an underground dispatching room.

In the actual operation process:

1. the main drop shaft 301 and the slag channel of the upper ore bin 401 are constructed;

in order to accelerate the construction progress of the drop shafts and the ore bins and meet the slag discharging requirement, the-930 m horizontal widening main drop shaft 301 connecting channel is increased to 6.4m, the-1005 m horizontal increasing 2 measure connecting channels 302, each 38m, and the slag discharging drop shafts with the diameters of 3m are respectively increased at the bottoms of the first ore bin and the second ore bin. The increment and construction of each part are specifically as follows:

1.1, firstly, arranging and lifting hanging systems for meeting the requirements of construction equipment of a main drop shaft slag chute, and widening the connecting channel of the main drop shaft 301 to 6.4m through a main drop shaft 301 channel by supporting materials during supporting.

1.2, -1005m horizontal first ore bin and second ore bin, adopting full-section blasting construction, and constructing to the bottom of the ore bin by 38m length.

1.3, the main drop shaft 301 and the ore bin slag-discharging drop shaft are constructed, a 70m primary well-forming technology is adopted, holes are distributed at the position of the main drop shaft 301 of minus 930m, a CK-150 down-hole drill is adopted for blast hole construction, after the blast holes are drilled, sectional charging and blasting are carried out, a connecting section for connecting the bottom of the ore bin with a measure is added during primary well-forming, finally, a well-forming drop shaft space is calculated to leave blasting slag stones in the drop shaft during sectional blasting, slag is not discharged, if the drop shaft is not fully piled up, the drop shaft is fully piled up from other positions, then the drop shaft and the ore bin are brushed on the drop shaft fully piled up, the blasting slag quantity is calculated during the blasting-up blasting, slag stones in the drop shaft are discharged to a certain depth after the blasting slag stone pile depth can be met, the blasting is carried out, the slope chute 303 is sequentially circulated to the position of an unloading station, the slope chute 303 and the unloading station foundation pit are finished, and the supporting is continuously tunneled downwards until the ore bin construction is completed.

2. The main drop shaft 301, the ore bin and the unloading station are subjected to foundation construction;

2.1, firstly, brushing an opening of a main drop shaft 301 to a buffer groove 304 section on the basis of a drop shaft slag discharging channel, firstly tunneling 2 cannons for 3-5 m, controlling slag discharging height according to site conditions by slag stones in the drop shaft slag discharging channel, reserving slag stones in the drop shaft slag discharging channel, then installing a lifting and hanging system, arranging the lifting and hanging system at the joint of a-930 m main drop shaft 301 connecting channel and an unloading station, and after the lifting and hanging system is installed, continuing brushing the main drop shaft 301 to the buffer groove 304 position of the main drop shaft 301, and stopping tunneling downwards. The main drop shaft 301 performs temporary spraying support with the thickness of 100mm once every 5m of tunneling when performing downward brushing tunneling, and the anchor bolt support is added when the rock is broken.

2.2, after the upper end of the main drop shaft 301 is subjected to the expanding brushing tunneling, the inclined drop shaft of the unloading station is tunneled from bottom to top from the interface position of the main drop shaft 301 and the inclined drop shaft of the unloading station, slag is discharged from a slag discharging channel at the bottom of the horizontal bottom of-1005 m according to the accumulation amount of blasting slag stones after each blasting, special persons are strictly arranged as required to take charge, the upper and lower ditches are communicated well before slag discharging, and the slag discharging height is controlled. The unloading station inclined chute 303 is tunneled to the basic chute position of the unloading station from bottom to top in sequence, then the upper part of the drop shaft of the unloading station is communicated by adopting a small section, then the foundation pit of the unloading station is brushed in place on the basis of the communicated small section, the brushed slag stones slide into the main drop shaft 301 through the drop shaft of the unloading station, part of the slag stones which cannot be left are raked into the drop shaft by adopting manual slag raking, and the slag stones slide into the main drop shaft 301 until the construction of the foundation pit of the unloading station is completed.

2.3, after the foundation of the main drop shaft 301 and the unloading station is spread and brushed, supporting from the inclined chute opening of the main drop shaft 301 and the unloading station, firstly cleaning the bottom of the main drop shaft 301 and leveling, paving two layers of tarpaulin for blocking cement slurry from flowing into a slag discharging channel, blocking the channel, firstly supporting the section 301 of the main drop shaft, then supporting the inclined chute, and finally supporting the foundation pit of the unloading station.

2.4, after the construction of the upper section of the main drop shaft 301 and the unloading station is completed, continuing to construct a buffer groove 304 section of the main drop shaft 301 according to an upper-section construction method, after the construction of the buffer groove 304 section is completed, fully brushing and tunneling the ore bin sections in place, and then sequentially supporting a rod type ore feeder chamber, a gate maintenance chamber and an upper ore bin 401 from bottom to top.

3. Constructing a crusher foundation 403;

firstly, a crusher foundation 403 and a lower ore bin 402 are constructed by a one-time well forming scheme, a slag chute with the diameter of 3m is constructed from-1005 m to-1060 m, after the slag chute construction is completed, the construction of the crusher foundation 403 is started, a plateau rock section with the width of 4.4m and the width of 9.7m in the middle of the two crusher foundations 403 is tunneled together with the crusher foundation 403, a 2m wide chute is tunneled in the middle, slag is raked to the slag chute with the diameter of 3m through the middle chute, 6m is layered during construction, the two foundations are constructed in a staggered mode, the slag is raked to the chute by using a rock raking machine core, and ore is discharged The vertical section of the mouth adopts the forward digging from top to bottom, the slag discharging adopts the manual slag discharging or the installation of a gangue grabbing machine to be matched with 1m ³ The small bucket is used for slag discharge, the powder ore is inclined by 58-degree slope, and when the foundation 403 of the crusher is tunneled, the construction is tunneled upwards from the bottom. After the tunneling work of the crusher foundation 403 is completed, supporting from bottom to top is started, and a channel with the diameter of 2m is reserved for personnel and materials to top and bottom during the expansion construction of the lower ore bin 402.

4. Constructing a lower ore bin 402;

4.1, the lower ore bin is brushed on a 3m drop shaft foundation by means of expanding brushing, a slag accumulation method is adopted to brush the lower ore bin 402, each time the lower ore bin is perforated to hold medicines, slag stones in the lower ore bin drop shaft are discharged downwards for a section according to blasting formula quantity and blasted again, the blasted slag stones are partially thrown into the drop shaft to fill the drop shaft, but a 2m height difference is required to be reserved, and operators are prevented from standing above accumulated slag of the drop shaft.

4.2, supporting the lower ore bin from-1060 m, firstly supporting the ore drawing chamber at the bottom of the lower ore bin from bottom to top, erecting a scaffold in the ore bin, installing a stabilizing car at-1005 m, lifting, transporting and installing manganese steel and steel bars from the bottom of-1060 m upwards, and pouring concrete at-1005 m, arranging a ash chute for pouring.

5. -780m to-930 m main drop shaft 301 construction;

5.1, 3-1 main drop shaft 301-780 m-930 m section construction, firstly, plugging a main drop shaft 301 opening by using 40I-steel and a steel plate with delta 10mm thickness at the level of-930 m, plugging the main drop shaft by adopting the same plugging method after the end of supporting of an unloading station, during construction, installing a reverse well drilling machine at the level of 780m to construct a drop shaft with the diameter of 1.4m, directly performing full-section one-step expansion molding for 5.2m on the basis of 1.4m drop shaft, spraying slurry to support 1-2 cannons to follow up at any time, and forming a free inclined pile of slag stones in the drop shaft after blasting by adopting manual slag raking to the drop shaft, sliding to the bottom and then using a loader to discharge slag through the unloading station and measures.

In the operation process, the following quality assurance measures are also required:

1. and a targeted blasting design is compiled, and the blasting design is perfected and modified in time according to the change of the field conditions in construction. The stemming should be made of yellow mud or sand clay material, so as to ensure the blocking quality and improve the blasting effect.

2. The method comprises the steps of drilling holes and charging the powder according to a blasting chart, and drilling holes according to the strict operation of alignment, leveling, straightening and alignment, and implementing 'five-setting', namely, setting people, drilling, positioning eyes, setting time and quality.

3. The center small well of the working face is formed, the gap and line spacing errors of the auxiliary eyes for enlarging and brushing are not more than 50mm, the gap errors of the peripheral eyes along the contour line of the tunnel section are not more than 50mm, the fundus does not exceed the contour line of the excavation section, and all the fundus of the blasthole is on the same vertical plane.

4. The trace rate of peripheral eyes after blasting is more than 50%, no over-dig which is more than the standard requirement occurs, and the step error between two cannons is less than 150mm.

5. Calibrating a central line in time, controlling the forming quality of a roadway, and specifically requiring the quality: the net width requirement of the anchor spraying support roadway is that the distance from the center line to any side is not smaller than 50mm of design and is not larger than 200mm of design specification.

6. And (3) concrete spraying construction quality assurance:

(1) before the sprayed concrete is stirred, all raw materials such as cement, sand and the like are tested, so that the qualification of the raw materials entering the field is ensured.

(2) Before construction, the section specification of the drop shaft is checked, and concrete spraying operation can be performed according with requirements.

(3) The rock surface must be cleaned before spraying, the floating gangue is cleaned, no rock exposing and dry cracking phenomenon exists after spraying, and the spraying is uniform. The strength of the sprayed concrete reaches the design requirement, the average strength is not lower than the design strength, the sprayed thickness reaches the design requirement, and the local part is not lower than 60% of the design specification.

(4) Before construction, equipment and pipelines must be checked and tested, and the phenomena of air leakage and water leakage cannot be caused.

(5) The concrete spraying operation should be performed in layers, the spraying of the later layer should be performed after the initial setting of the former layer, and the spraying should be performed at intervals of more than one hour when dust exists on the initial spraying surface. And after the concrete is sprayed and finally set for 2 hours, water is sprayed for maintenance.

(6) When the concrete spraying is closely followed by the working surface, the time for completing the next blasting distance concrete spraying operation is generally not less than 4 hours.

(7) The spray head is perpendicular to the sprayed surface, and the distance between the spray head and the sprayed surface is 0.8-1 m, and the spray head is operated to move transversely and annularly continuously and slowly in a gradual way.

7. The steel bar construction quality assurance measures:

(1) the reinforced concrete support construction is carried out according to the specification of the acceptance Specification of the construction quality of concrete engineering (GB 50204-2015), and the types, the models, the diameters and the like of the reinforced bars are in accordance with the specification of a construction drawing and subjected to a material test.

(2) Before the project starts, technicians should make a steel bar specification dosage plan according to the construction drawing. After the steel bar enters the field, the steel bars are layered and orderly arranged according to the specification, the damp and rust prevention of the steel bars are paid attention to, the qualification of the steel bars is checked, and the steel bar sampling test is performed in time. And the test is qualified and then can be used.

(3) The steel bars are subjected to blanking, cutting, butt welding, forming and other works in the field, the manufactured steel bars are orderly stacked in a classified mode, the joint positions, geometric dimensions, bending angles, lap joint lengths and stretching control of the steel bars are paid attention to in the manufacturing process, and the number of the steel bars with various specifications and varieties is ensured to meet the requirements.

(4) The deformed steel bar needs to pay attention to bending radius control, strictly prevents bending damage, and ensures axis centering and moderate pressure during butt welding.

(5) The steel bar binding is strictly carried out according to the design and specification requirements, the positions, the number, the geometric dimensions, the spacing specification, the lap joint length (the lap joint length is 52 d) and the like are ensured to be accurate, the binding is firm and reliable, the supporting pad of the protective layer is well formed, and the inclined chute 303 of the unloading station is used for casting for multiple times, so that each die is overlapped with each die, the lap joint length of the steel bars is reserved, and the steel bars of the lower die are overlapped with the lower die.

(6) Before concrete is poured and tamped after the binding of the reinforcing steel bars, the concealed checking and accepting work of the reinforcing steel bars is needed to be done, and written checking and accepting procedures are done in time. When concrete is poured and vibrated, a special person should be assigned to pay attention to the reinforcing steel bars, and the reinforcing steel bars are restored and corrected in time.

7. And (3) concrete construction:

(1) before mixing the concrete, all raw materials such as cement, sand and the like are tested.

(2) A metering device is arranged at the stirring station, the concrete mixing proportion is strictly mastered, and sampling and testing are carried out according to the regulations.

(3) Regular inspection and calibration are carried out on the wall building templates, and the specification and the size are found to be changed and should be adjusted in time.

(4) Each time the wall is built, a full-time measuring person is required to check the center line, levelness and verticality of the template, and the wall is built by adopting an enlarged line measuring method for stabilizing the wall so as to ensure the specification of the wall.

(5) The concrete pouring is required to be uniformly poured in layers, the concrete wall building quality is guaranteed by vibrating in layers, the quality hanging responsibility is implemented, and the maintenance is carried out according to the regulations.

8. And (3) construction of a manganese steel plate:

(1) the type, model and the like of the incoming manganese steel plate meet the design rules and have delivery qualification.

(2) The surface leveling deviation between adjacent manganese steel plates during installation of the manganese steel plates is not greater than the design requirement, and the outer misplacement of the lower layer plate between the upper layer plate and the lower layer plate is avoided.

(3) The manganese steel plate fixing anchor bolts are welded and bound with the steel bars, and the connection is to be flat.

(4) When the manganese steel plates are installed, gaps of 10mm are reserved between every two manganese steel plates, and the upper layer plate and the lower layer plate are provided with the gaps by using reinforcing steel bars with the diameters of 10mm as cushion blocks.

(5) The manganese steel plate installation and the inner side steel bars are reserved with a protective layer with the thickness of 50mm according to the design requirement.

Requiring the relevant operators to perform the following safety measures:

1. before entering the field, all operators must receive three-level safety education training and pass the examination, familiarize and master each regulation and management system of the first party related safety production, carefully learn each work safety operation rule, and can go into the well after passing the training.

2. Each regulation system of the company and the project department is strictly executed, and management of personnel related to the company and the project department is obeyed.

3. The organization operators implement the study of the safety technical measures, seriously carry out the safety technical engagement and organize all operators to engage in the field, and are familiar with the working environment and the attention matters.

4. And 4, enhancing the top plate management, adhering to a lasting slope-knocking top-asking system, checking the working face slope before the drilling operation, ensuring that the drilling operation is performed after loose stones are not generated, and making check records.

5. And cleaning up the turpentine in the range of 2m around the wellhead, and ensuring that the periphery of the wellhead is free of turpentine and sundries.

6. The personnel riding the hanging pot must tie the safety belt.

7. The rail arranged at the wellhead is required to be firm, and the safety belt is hung on a safety rope in the bucket after entering the bucket.

8. The wind and water pipe in the shaft must be suspended vertically and the bending is forbidden.

9. And checking the hanging scaffold after each shift is carried out, and cleaning sundries on the hanging scaffold in time.

10. The driver of winch must adhere to the post and take care of his or her cares, and must not leave the post and sleep.

11. Before the explosive is filled, the lighting and signal facilities are firstly collected onto the hanging scaffold along with the hanging pot, so that the blasting damage is prevented.

12. The guard duty leader makes work of job plane safety supervision, and finds hidden danger to be safely and timely processed according to relevant specifications.

13. And the underground operation condition and environment are improved, the working efficiency is improved, and the construction progress is accelerated.

14. The staff should have a full rest and forbid the drunk and go on duty to ensure the operation safety during the work.

15. And (3) strictly performing shift-switching management, wherein all constructors have to switch shifts on site, and a shift team leader has to clearly switch the condition of a working face to the next shift.

16. After each work reception, the working surface must be checked by the team leader to confirm that the safety party can let the constructor enter the working surface for construction, if the potential safety hazard is found, the working surface must be immediately processed.

17. The air pipe joint must be firmly connected by using the machinery with compressed air as power. So as to prevent the injury of people caused by throwing.

18. The working face is safe to use electricity, underground electrical equipment is protected by electric leakage, grounding, overcurrent and the like, the joint is insulated and sealed, and a strong light with 36v voltage is used for illumination on the working face.

19. Strengthen the construction of the field civilization, and hang the warning sign (wear the labor insurance articles, prevent warning sign such as fall) on the working face.

20. The constructor must be equipped with self-rescuer and gas detector to get into the drop shaft, and before advancing the overhead tank, detect with gas detector whether poisonous harmful gas exceeds standard earlier, whether the oxygen is up to standard, and after confirming qualified safety, the side can get into the overhead tank.

21. Personnel must close the door when entering and exiting the hanging pot, check whether the bolt is closed, and then check the signal to confirm that the hanging pot is lifted.

22. Checking that the electric quantity of the interphone is full before each working, and performing test communication to ensure that the interphone is used after being intact and fault-free.

23. Inspection and maintenance of lifting equipment

(1) Checking before each work whether the winch brake is fully active

(2) Checking whether the steel cord is properly wound on the drum

(3) After going off duty, the stone and dust falling on the hanging pot are removed and washed clean by water

(4) Each shift checks whether the wire rope has broken wires and rusted, and forms a standing book record.

24. When in drilling, wet type drilling is adopted. The driller and all other underground personnel must wear the individual protective articles correctly to make comprehensive dustproof work.

25. The blasting worker must be trained in professional security, and after qualified, the professional personnel who obtains the operation certificate of blasting operation can take the role and hold the certificate on duty.

26. The blasting bus is used for constructing a double-stranded copper core insulating wire, a clear joint is not required, and the two ends of the blasting bus are twisted to form a short circuit. And (5) tightly forbidden edge punching and edge charging.

27. Rock powder in the blasthole must be removed before charging, and then the gunpowder roll is gently pushed in by using a gunpowder stick, so that the gunpowder roll cannot be bumped or tamped. After the explosive charge, the detonator leg wire is suspended, and the detonator leg wire and the explosion bus are tightly forbidden to be contacted with other conductors.

28. The detonator and explosive must be transported separately; and the primary explosive roll and the explosive are tightly forbidden to be packaged in the same blasting material container and conveyed to a working surface.

29. Before each explosion, the blaster must make a network check of the explosion.

30. Before blasting, underground constructors must be completely evacuated to a safe range, a warning line is pulled, and a signboard is hung. After the safety personnel confirms the safety, the blaster can perform online detonation.

31. After blasting, personnel enter the working face through the hanging pot, and the reverse well hole is plugged by the iron screen, and after the iron screen is confirmed to be safe and firm, other works can be carried out to prevent people or objects from falling into the well bottom.

32. After blasting, after blasting fume of the working face is blown away, security check personnel must check the safety of each suspended pipeline, the damage condition of the well wall and the like, make adjustments to unsafe conditions in time, and if the various pipelines have damage phenomena, the pipelines must be replaced in time.

33. The key of the blasting machine must be carried by a blaster, and the blaster must be strictly prevented from being handed over to others, so that the key of the blasting machine must not be inserted into the blasting machine when the blaster is not blasted, and before the blasting, the blasting bus must be twisted into a short circuit. After blasting, the key of the blaster must be pulled out immediately, the busbar removed and twisted into a short circuit.

34. When concrete spraying operation, operators must wear neat labor protection articles, wear dustproof masks and latex gloves during spraying, prick cuffs, buckle clothes buckles, tie safety belts and take goggles, so that the spraying slurry is prevented from bouncing to hurt eyes during concrete spraying operation.

35. When the concrete spraying operation is performed, the pipeline interfaces must be firmly connected, and whether the pipeline interfaces are good or not must be checked before the operation.

36. Before spraying, the working surface and the spraying place must be carefully checked, the top of the wall is knocked in time, the dangerous rock of the gangue is found out, unsafe factors are eliminated, and the spraying surface is cleaned by compressed air or water.

37. The spraying hand should be equipped with 2 people, one person holds the gun to spray, and an auxiliary lighting is responsible for the connection, observes roof and spraying condition to guarantee safety and spraying quality.

38. The operation of the guniting machine should follow the sequence of wind supply, water supply, startup and feeding. And stopping feeding at the end, and stopping the machine, the power failure, the water and the wind after the material is used up. The feeding is continuous and uniform.

39. When spraying slurry, the spray head is vertical to the rock surface as much as possible and is not more than 1m away from the rock wall, the spray sequence should be spirally moved from bottom to top, and the rotation diameter is preferably about 300 mm.

40. When spraying, the wind pressure and the water pressure are correctly regulated to reduce the rebound quantity and the dust concentration, ensure that sprayed concrete has no dry spots, no flowing, strong adhesive force and small rebound force, and ensure the thickness of a sprayed layer, and the thickness of one-time spraying is not more than 60mm.

41. When the air and water pipeline and the like are in failure or the discharging of the spray head is abnormal, the feeding work is stopped immediately, and the machine is stopped for treatment, so that accidents can be prevented. When handling a blocked injection line, no one has to be in front of the lance mouth, which has to be in a downward or unmanned direction, in order to prevent sudden injection and line jump from injuring one.

42. The equipment is frequently maintained, the safety power consumption is paid attention to, and electric shock accidents are strictly prevented.

43. And after the spraying is finished, removing the residual cement mixture in the spraying machine, and removing the spraying machine to a safe place.

44. Other outstanding matters are executed according to the relevant regulations of the metal-nonmetal mine safety regulations.

And the construction of the breaking system also needs to obey the following limited space dangerous operation standards and safety precautions:

(1) According to the principle of detection and operation after detection, the operation can be performed in dangerous operation places in limited space, the contents of oxygen, harmful gas and combustible gas of the dangerous operation places must be detected according to actual conditions, and the dangerous operation places can be performed after meeting safety requirements;

(2) Ensuring the air quality of a limited space dangerous operation site, wherein the oxygen content is as follows:

19.5％—23.5％；

(3) In the process of carrying out dangerous operation in a limited space, the necessary measurement times or continuous detection should be kept in dangerous operation in which the oxygen concentration and the flammable gas concentration may change;

(4) When the electric tool enters a limited space for operation, enough illumination is needed, the illumination meets the explosion-proof requirement, the voltage of a running light is below 36V, a hand-held electric tool exceeding the safety voltage is used, and a leakage protector is required to be arranged according to the specification; the safety regulations on fire, temporary electricity, hoisting, high-place operation and the like are complied with.

(5) In order to ensure the freshness of the air in the limited space, natural ventilation or forced ventilation and other methods can be adopted for ventilation (strictly prohibiting oxygen ventilation into the limited space).

(6) Strictly forbidden irrelevant personnel enter a dangerous operation place in a limited space, and warning marks are set at striking positions;

(7) In a dangerous operation place in a limited space, a corresponding rescue tool is required to be equipped so as to rescue an operator in a very situation, and special person on-site monitoring is required to be provided;

(8) Labor protection articles, protection appliances and use tools are correctly worn according to the regulations.

(9) The inside and outside of the access opening of the limited space should be unobstructed, and no obstacle exists.

(10) Before the operator enters the limited space, the route and method for the operator to go out in emergency should be first planned. During operation, people should be arranged to rotate or rest at proper time according to operation conditions.

(11) Emergency situations of poisoning and asphyxiation of people occur, rescue personnel must wear the isolated protector to enter a limited space, and at least one person can communicate and report outside.

(12) If the above measures are changed during the operation, the operation should be stopped immediately, and the operation can be continued after the processing reaches the safe condition of the operation.

(13) After the operation is finished, the garbage and sundries generated by the operation are removed. The department responsible person must make an acceptance.

(14) The following operations are prohibited:

A. no guardian is working.

B. And (5) overtime operation.

C. Blind rescue in unknown conditions.

It should be appreciated that the terms first, second, etc. are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: the terms "/and" herein describe another associative object relationship, indicating that there may be two relationships, e.g., a/and B, may indicate that: the character "/" herein generally indicates that the associated object is an "or" relationship.

It should be understood that in the description of the present invention, the terms "upper", "vertical", "inner", "outer", etc. indicate an orientation or a positional relationship in which the disclosed product is conventionally put in use, or an orientation or a positional relationship that is conventionally understood by those skilled in the art, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates to the contrary. It will be further understood that the terms "comprises," "comprising," "includes," "including" and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, and do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.

In the following description, specific details are provided to provide a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. In other embodiments, well-known processes, structures, and techniques may not be shown in unnecessary detail in order to avoid obscuring the example embodiments.

The foregoing is merely exemplary of embodiments of the present application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Claims (10)

1. A method of constructing a breaking system, the method comprising:

the sliding breaking system is used for constructing a horizontal gallery at a first position, a second position, a third position and a fourth position from top to bottom and a chamber;

constructing a main drop shaft connecting roadway at a second position, constructing two connecting roadways at a third position and constructing a belt channel chamber connecting roadway at a fourth position;

an isolation steel plate is horizontally arranged at the second position to block one side of the main wellhead and the unloading station, and a steel retaining wall is horizontally arranged at the third position;

performing expansion brushing to form a well at a first construction section between the first position and the second position, a second construction section between the second position and the third position and a third construction section between the third position and the fourth position;

and synchronously constructing in the first construction section, the second construction section and the third construction section to respectively finish the construction of the ore pass, the main pass, the upper ore bin, the crusher foundation and the lower ore bin.

2. The method of constructing a fracking system according to claim 1, wherein: when the main drop shaft connecting roadway is constructed at the second position, the main drop shaft connecting roadway is widened horizontally to 6.4m at the second position so as to meet the requirements of the size of slag discharging equipment of the main drop shaft and the arrangement of a lifting hanging system.

3. The method of constructing a fracking system according to claim 1, wherein: when two connecting channels are constructed at the third position, a first unloading chamber and a second unloading chamber are constructed at the third position, full-section blasting construction connecting channels are adopted at the bottoms of the first unloading chamber and the second unloading chamber, the length of each connecting channel is 38m, the connecting channels are constructed to the bottom of a mine bin, the section height is 4m, the section width is 3m, and a forklift and a slag discharging vehicle are ensured to slag through slag discharging.

4. The method of constructing a fracking system according to claim 1, wherein: the isolation steel plate and the steel retaining wall are respectively fixedly connected with a steel plate with the thickness of 3cm by adopting 30T I-steel to form a blocking support.

5. The method of constructing a fracking system according to claim 1, wherein: and the second construction section adopts a reverse well drilling machine to carry out construction in a full-section expanding brushing mode.

6. The method of constructing a breaking system according to claim 5, wherein: and the third construction section adopts a reverse well drilling machine to carry out construction in a step-by-step expansion brushing mode.

7. The method of constructing a breaking system according to claim 6, wherein: the powder ore pass, the main pass and the upper ore bin are an integral vertical main pass, and the construction diameter is 1.4m by adopting a back shaft drilling machine respectively.

8. The method of constructing a fracking system according to claim 1, wherein: when the first construction section, the second construction section and the third construction section are subjected to expansion brushing to form a well, blasting slag stones are freely placed to the bottom in the drop shaft, free inclined piles formed by basic slag stones of a crusher in the third construction section adopt manual slag raking to a chute and then slide to the bottom of the drop shaft, and then a loader is used for loading slag and discharging slag.

9. The method of constructing a fracking system according to claim 1, wherein: after the first construction section, the second construction section and the third construction section are subjected to expansion brushing and well formation, the temporary lifting hanging system is utilized to carry out manganese steel plate installation and support construction from bottom to top, and the manganese steel plate is utilized as a template to carry out reinforced concrete pouring during support.

10. The method of constructing a fracking system according to claim 1, wherein: the first position is 780m under the sea level reference, the second position is 930m under the sea level reference, the third position is 1005m under the sea level reference, and the fourth position is 1060m under the sea level reference.