CN114961803A - Construction method for system engineering of crushing chamber - Google Patents
Construction method for system engineering of crushing chamber Download PDFInfo
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- CN114961803A CN114961803A CN202210657216.XA CN202210657216A CN114961803A CN 114961803 A CN114961803 A CN 114961803A CN 202210657216 A CN202210657216 A CN 202210657216A CN 114961803 A CN114961803 A CN 114961803A
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- 238000010276 construction Methods 0.000 title claims abstract description 124
- 239000010878 waste rock Substances 0.000 claims abstract description 93
- 230000005641 tunneling Effects 0.000 claims abstract description 37
- 230000001680 brushing effect Effects 0.000 claims abstract description 27
- 238000009826 distribution Methods 0.000 claims abstract description 22
- 239000002390 adhesive tape Substances 0.000 claims abstract description 19
- 239000000428 dust Substances 0.000 claims abstract description 14
- 239000011435 rock Substances 0.000 claims description 47
- 238000007599 discharging Methods 0.000 claims description 41
- 239000004567 concrete Substances 0.000 claims description 22
- 239000002699 waste material Substances 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 238000005553 drilling Methods 0.000 claims description 9
- 238000005422 blasting Methods 0.000 claims description 7
- 239000002023 wood Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims description 2
- 238000009412 basement excavation Methods 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims 2
- 239000000725 suspension Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 4
- 238000009415 formwork Methods 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D13/00—Large underground chambers; Methods or apparatus for making them
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Abstract
The invention discloses a construction method of a crushing chamber system engineering, which comprises the following steps: constructing a connection measure roadway; constructing a waste rock sliding chute; constructing a small section of the ore feeder chamber; tunneling a small section of the crushing chamber; constructing two main draw shafts, a raw ore bin raise and a central hoisting pot hole of a two-day shaft; tunneling a small section of the power distribution chamber; constructing a No. 1 connecting road; tunneling a large road with a small section; hoisting the small section of the chamber from the upper part of the large part well at the tail part of the inclined shaft by using the adhesive tape, and tunneling the small section of the chamber upwards to the top of the chamber; constructing a large well at the tail part of the ore belt way; constructing a No. 3 connecting road; constructing a small reverse well at the center of a large-piece well at the tail part of the inclined shaft by using the adhesive tape; constructing a hoisting chamber at the upper part of a large part at the tail part of the inclined shaft by using the adhesive tape; expanding and brushing a large-piece well at the tail part of the inclined shaft by using the adhesive tape; expanding and brushing the drop shaft and the crude ore bin for supporting construction; constructing an ore feeder chamber; construction of a power distribution chamber; constructing a dust removal chamber; constructing a crushing chamber; constructing a large channel; and constructing the No. 2 connecting road. The gangue transfer link is simple, materials, personnel and equipment can conveniently enter and exit, and the construction progress is fast.
Description
Technical Field
The invention relates to the field of mine construction, in particular to a construction method of a crushing chamber system engineering.
Background
The construction main body of the system engineering of the crushing chamber is each large chamber and an ore pass, no direct channel is communicated with the rubber belt inclined shaft, the construction area is narrow, multi-head parallel construction is not convenient to organize, ventilation is difficult, the lifting amount is limited, the supporting engineering amount of each large chamber is large, and the supporting time is long.
The traditional construction method is to complete the chamber engineering at the lower part of the adhesive tape inclined shaft after the adhesive tape inclined shaft falls to the bottom, reversely dig two large shafts upwards from the ore feeding belt channel and the connecting channel, and then use the large shafts, the ore feeding belt channel and the connecting channel to transfer waste rocks to the adhesive tape inclined shaft to construct the crushing chamber system engineering.
Disclosure of Invention
In order to solve the technical problems, the invention provides the construction method of the crushing chamber system engineering, which has the advantages of simple construction, low construction cost and high construction speed.
The technical scheme for solving the technical problems is as follows: a construction method of a crushing chamber system engineering comprises the following steps:
step P1, constructing a connection measure roadway between the belt inclined shaft and the ore feeder chamber: when the inclined shaft of the rubber belt is constructed to the position of the connection measure roadway, the connection measure roadway is excavated;
step P2, constructing a waste rock sliding chute between the rubber belt inclined shaft and the ore feeder chamber: the rubber belt inclined shaft is dug downwards continuously, and when the inclined shaft is dug to the position of the waste rock sliding chute, the waste rock sliding chute is dug backwards and is communicated with the communication measure roadway;
step P3, constructing the small section of the ore feeder chamber: constructing along the small section of the feeding machine chamber, and unloading the waste rock from a waste rock unloading funnel through the lower opening of a waste rock sliding chute to store the waste rock into a rubber belt inclined shaft skip and discharge the waste rock;
step P4, carrying out small-section tunneling on the crushing chamber: tunneling along the small section of the crushing chamber, and transferring the gangue into a rubber belt inclined shaft skip for discharging the gangue through a gangue discharging funnel at the lower opening of a gangue sliding chute;
step P5, constructing two main draw shafts, a raw ore bin raise and a two-day well center hoisting pot hole: digging out the raise position by a bucket reversing construction method, punching a central bucket lifting hole of a two-day well, punching the central bucket lifting hole by a geological drilling rig, after the waste rock slips to the level of the crushing chamber from the working face, turning the waste rock into a waste rock slipping chute nearby, and transferring the waste rock into a rubber belt inclined shaft skip for lifting out; constructing a main orepass inclined part, a branch orepass and a raw ore bin by adopting a common raise-back method, wherein the main orepass inclined part and a small raise in the center of the raw ore bin are reversely dug upwards from an ore feeder chamber, the small raise in the center of the raw ore bin is dug to the main orepass inclined part for time sharing, the branch reversely digs small raise in No. 1 and No. 2 main orepass inclined parts to two sides and is communicated with a main orepass raise, and gangue slides to the ore feeder chamber along the small raise and slides into a gangue chute nearby; when the main orepass is expanded and brushed to the position of the branch orepass, reversely digging a small reverse shaft of the branch orepass to an ore unloading chamber;
step P6, carrying out small-section tunneling on the power distribution chamber: tunneling along the small section of the distribution chamber, and transferring the gangue into a rubber belt inclined shaft skip for discharging the gangue through a gangue discharge hopper at the lower port of a gangue chute;
step P7, construction of No. 1 connecting road: construction of a No. 1 connecting road is carried out, and gangue is transferred into a rubber belt inclined shaft skip through a gangue discharge hopper at the lower opening of a gangue sliding chute to be discharged;
step P8, tunneling a large tunnel with a small section: performing small-section tunneling on the large piece of road, and transferring the waste rock to a rubber belt inclined shaft skip through a waste rock discharging funnel at the lower opening of a waste rock sliding chute to discharge the waste rock;
step P9, hoisting the small section of the chamber from the upper part of the large part at the tail part of the inclined shaft by using the adhesive tape, and tunneling the small section of the chamber upwards to the top of the chamber: hoisting the small section of the chamber along the upper part of the large member well at the tail part of the rubber belt inclined shaft, and tunneling the chamber upwards to the top of the chamber, wherein the waste rock is dumped into a rubber belt inclined shaft skip through a waste rock discharging funnel at the lower opening of a waste rock sliding chute to discharge the waste rock;
step P10, constructing the ore feeding belt way and the big piece well at the tail part of the ore feeding belt way: when the rubber belt inclined shaft is constructed to a position 5m away from the ore feeding belt way, firstly, a shaft is dug for layering, the bottom of a tunneling shaft is lifted to be horizontal, the level is kept level with the bottom plate of the ore feeding belt way, a rock raking machine of the inclined shaft is used for removing waste rocks, the ore feeding belt way is directly dug out and supported, and meanwhile, a small reverse shaft in the center of a large workpiece well at the tail part of the inclined shaft is reversely dug to be horizontal to a crushing chamber and is expanded and brushed;
step P11, constructing a No. 3 connecting road, and discharging waste rocks by using an inclined shaft rock raking machine;
step P12, constructing a small reverse well at the center of the large member well at the tail part of the inclined shaft by using the adhesive tape: performing small reverse well construction of a large well center at the tail part of the inclined shaft by using an inclined shaft rock raking machine;
step P13, constructing a hoisting chamber at the upper part of the large part at the tail part of the adhesive tape inclined shaft: the hoisting chamber adopts a chute which is arranged from a large-piece tunnel small-section roadway to the top of the chamber, the chute avoids the position of a large-piece well small reversal well, then the construction is carried out from the top to the lower part in a layered expanding and brushing manner, the waste rock slides from the chute to the level of the crushing chamber, and the waste rock is transferred to a rubber belt inclined shaft skip for discharging the waste rock through a waste rock sliding chute lower port discharge hopper;
step P14, expanding and brushing the large-piece well at the tail of the adhesive tape inclined shaft: expanding and brushing a large tail well of the rubber belt inclined shaft downwards from a small reverse well in the center of the large tail well, and discharging waste rocks by using an inclined shaft rock raking machine;
step P15, expanding and brushing the draw shaft and the raw ore bin for supporting construction: the vertical section of the main chute is horizontally expanded downwards, waste rocks are filled in the raise shaft of the measure section firstly, then the waste rocks are slid to the crushing level through the inclined section chute, the transfer chamber and the small reverse shaft of the raw ore bin, and transferred to a waste rock sliding chute; when the main orepass is subjected to expanded brush support construction to an inclined section, a bonding anchor is used as a detachable half-side platform at the position of a variable section, and an orepass of the inclined section is constructed by using a lower brush of the platform; before the expansion brush support of the raw ore bin, constructing the side part of the ore bin of the middle-section ore unloading chamber, and then expanding and brushing the construction raw ore bin downwards by taking the ore unloading chamber as a platform; the branch drop shaft only synchronously supports the expanding brushes 2-3 m at the side opening of the main drop shaft and the main drop shaft, and the rest part is expanded and brushed downwards from the upper part of the branch drop shaft for construction;
step P16, constructing an ore feeder chamber: the construction method comprises the following steps of constructing a mine feeding machine chamber, wherein the chamber is constructed by firstly carrying out upward top lifting construction from a small-section channel, carrying out expanded brushing on the constructed chamber from a small-section lane after the small-section lane is carried out to the top of the chamber, carrying out expanded brushing on the upper layer of the chamber, carrying out expanded brushing on the lower layer and carrying out temporary supporting after anchor net spraying temporary supporting is carried out on the upper layer, and carrying out supporting from bottom to top after a full-section is excavated;
step P17, construction of the power distribution chamber: constructing a distribution chamber, performing primary expanding brushing and supporting on the distribution chamber, and transferring waste rock to a rubber belt inclined shaft skip for discharging the waste rock through a waste rock discharging funnel at the lower opening of a waste rock sliding chute;
step P18, constructing the dust removal chamber: constructing by a layering method, namely, firstly tunneling and supporting the upper layer, then constructing and supporting the lower layer, and synchronously constructing the lower layer and the first layer of the crushing chamber left side guide tunnel; when the lower layered construction is carried out, a platform at the opening of the chamber and a rock pillar below the step are protected, and the waste rock is transferred to a rubber belt inclined shaft skip for discharging the waste rock through a waste rock discharging funnel at the lower opening of a waste rock sliding chute;
step P19, constructing the crushing chamber: construction is carried out by adopting a pilot cave layering method, before construction of a crushing cave, the cave around the crushing cave is constructed, a wide construction place is formed, so that the construction is facilitated, and waste rocks are dumped into a rubber belt inclined shaft skip through a waste rock discharging funnel at the lower opening of a waste rock sliding chute to discharge the waste rocks;
step P20, constructing the large road: after the construction of each chamber and the sliding breaking system is finished, large-piece road construction is carried out;
step P21, construction of No. 2 connecting road: and (4) carrying out construction of the No. 2 connecting channel, and constructing the No. 2 connecting channel from the opening of the large channel.
In the construction method of the crushing chamber system engineering, in the step P5, for the construction of the vertical part of the main shaft, the position of the shaft is excavated by a tank-lifting raise-reversing construction method, the shaft is ventilated through a tank-lifting hole, two persons only work on the tank-lifting, when the tank-lifting moves up and down, a top protection umbrella is opened, an operator observes the wall of the shaft at any time, finds loose rock, immediately stops the tank for treatment, and when the tank reaches the top working surface, the operator stands under the protection umbrella to treat a top plate; because the hanging tank hole is inclined, the hanging tank collides the well wall when going up and down, the safety belt is tied by personnel, and the tank is immediately stopped for treatment when collision occurs; and for the inclined part of the main draw shaft, the branch draw shafts and the raw ore bin, the common reverse shaft method is adopted for construction, an operation platform is built by utilizing wall anchors, bottom anchors, channel steel and boards, the previous layer of platform wall anchors and bottom anchors are drilled and installed before blasting at each time, the distance between two layers of platforms is controlled to be 1.2-1.5 m, the platform I-steel, the wall anchors and the bottom anchors are firmly bound by iron wires, two workers are working face operation personnel, the knocking is carried out from top to bottom, the workers carefully observe the top bunding and the bottom board loose stones when going up and down, and the abnormal condition is found and timely processed.
In the construction method of the crushing chamber system engineering, in the step P13, anchor net-jet temporary support is firstly carried out after layered excavation, and permanent support is carried out from bottom to top after the chamber is completely excavated.
In the construction method of the crushing chamber system engineering, in the step P15, before concrete support and mold stabilization of the vertical section drop shaft, the bottom of the periphery of the shaft is chiseled by an air pick, and the mold plate is seated on solid rock without being suspended; the bottom of the template is filled with the solid and the template is firmly supported; if the template is suspended due to the deviation of the edge of the central raise, an anchor rod is additionally arranged at the bottom of the shaft, and a cushion plate is added to stabilize the template; when the inclined section draw shaft is expanded and brushed, the working surface is made to be horizontal, so that the drilling operation is convenient; the bottom of each mould support is in a horizontal state, and a chute and a raw ore bin funnel mouth 1m are synchronously supported with the chamber.
In the construction method of the crushing chamber system engineering, in the step P16, before the construction of the ore feeder chamber, the opening of the raw ore bin funnel is sealed by using a steel beam and a wood board to prevent people from being injured by falling objects; synchronously supporting a reserved supporting section of a raw ore bin funnel and an arch part of an ore feeder chamber; the wall part is supported by a wood template, the arch part is supported by a channel steel arch tire and an arch tire plate, and a supporting platform is erected by a support pipe.
In the construction method of the crushing chamber system engineering, in the step P17, the connection part 1m of the feeding chamber, the distribution chamber and the crushing chamber is synchronously supported with the crushing chamber.
In the construction method of the crushing chamber system engineering, in the step P18, a No. 2 connecting channel 3m is constructed from the dust removal chamber while the dust removal chamber is constructed; and the 1m joint of the dust removal chamber and the crushing chamber is synchronously supported with the crushing chamber.
In the construction method of the crushing chamber system engineering in the step P19, in order to ensure the construction quality of the concrete and accelerate the construction speed during the pilot chamber construction, the top-lifting operation is performed without detaching the wall form after the construction of the wall concrete is finished and the initial strength is reached, and the wall form protects the concrete from being damaged by the impact of the blasting rocks.
The invention has the beneficial effects that: the invention constructs a connection measure roadway between the ore feeder chamber and the belt inclined shaft, constructs a gangue sliding chute between the ore feeder chamber and the belt inclined shaft, and utilizes the connection measure roadway to lower personnel, materials and equipment and utilizes the gangue sliding chute to transfer gangue into the belt inclined shaft skip to construct a crushing system engineering. The method has the characteristics of simple gangue transferring link, convenient material, personnel and equipment entering and exiting, quick construction progress and the like, and greatly saves the construction auxiliary cost.
Drawings
FIG. 1 is a construction flow chart of the present invention.
Fig. 2 is an engineering plan view of the crushing chamber system of the invention.
Fig. 3 is a layout diagram of the chute breaking system of the present invention.
Fig. 4 is a side view of fig. 3.
Fig. 5 is a layout diagram of the construction process of the chute breaking system of the invention.
Fig. 6 is a plan view of the crushing chamber construction process layout of the present invention.
Fig. 7 is a cross-sectional view of the crushing chamber construction process arrangement of the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1-7, a construction method of a crushing chamber system engineering includes the following steps:
step P1, constructing a connection measure roadway between the belt inclined shaft and the ore feeder chamber: and when the rubber belt inclined shaft 1 is constructed to the position of the connection measure roadway 2, the connection measure roadway is excavated.
Step P2, constructing a waste rock sliding chute between the rubber belt inclined shaft and the ore feeder chamber: and (3) continuously digging a shaft of the rubber belt inclined shaft 1, reversely digging a gangue sliding chute 3 when the shaft 1 of the inclined shaft is dug to the position of the gangue sliding chute 3 (a gangue bin), communicating with the communication measure roadway 2, and automatically sliding gangue along the chute into a skip of the rubber belt inclined shaft 1 to discharge gangue.
Step P3, constructing the small section of the ore feeder chamber: and (4) constructing along the small section of the ore feeder chamber 4 while performing the step P2, and transferring the waste rock to a skip of the rubber belt inclined shaft 1 through a waste rock discharging funnel at the lower opening of the waste rock sliding chute 3 to discharge the waste rock.
Step P4, carrying out small-section tunneling on the crushing chamber: and (4) after the step P3 is finished, tunneling along the small section of the crushing chamber 5, and transferring the waste rock to a skip of the rubber belt inclined shaft 1 for discharging the waste rock through a waste rock discharging hopper at the lower opening of the waste rock sliding chute 3.
Step P5, constructing two main draw shafts, a raw ore bin raise and a two-day well center hanging cage hole: when the step P4 is carried out, a raise leading to a middle section of-100 m is horizontally drilled from-200 m by a tank-hoisting and shaft-reversing construction method, vertical parts of the main drop shafts 6 and 7 are constructed, a main hole and an auxiliary hole are drilled in the center of the two-day shaft, and a geological drilling machine is used for drilling a central tank-hoisting hole; the inclined parts of the main orepasses 6 and 7, the branch orepasses 19 and 24 with the diameter of-150 m and the raw ore bin 8 are constructed by adopting a common raise-back method, and the small raise-back in the centers of the inclined parts of the main orepasses 6 and 7 and the raw ore bin 8 is dug back upwards from the ore feeder chamber 4. When the small reverse well at the center of the raw ore bin 8 is dug to the inclined parts of the main orepasses 6 and 7, the branch reverse digs the small reverse well at the inclined parts of the main orepasses 6 and 7 towards the two sides and is communicated with the main orepasses 6 and 7. And the gangue is fed to the ore feeder chamber 4 along the small reversing shaft and is fed into the gangue sliding chute 3 nearby. When the main orepasses 6 and 7 are expanded and brushed to the positions of the branch orepasses 19 and 24, the branch orepasses 19 and 24 are reversely excavated and constructed to a middle ore discharging chamber 21 of-150 m.
For the construction of the vertical parts of the main drop shafts 6 and 7, the raise position needs to be excavated by a tank-hoisting and shaft-reversing construction method, the raise is ventilated through a tank-hoisting hole, two persons only work on a tank-hoisting, a top protection umbrella needs to be opened when the tank-hoisting runs up and down, an operator observes the well wall at any time, loose gangue and live rocks are found, the tank is immediately stopped for processing, and when the tank reaches the top working surface, the operator needs to stand under the protection umbrella to process a top plate. Because the hanging tank hole is inclined, the hanging tank can collide the well wall when going up and down, and the personnel must tie the safety belt. When collision occurs, the tank is immediately stopped for treatment, the inclined parts of the main orepass 6 and 7, the branch orepass 19 and 24 and the raw ore bin 8 are constructed by adopting a common raise-shaft method, an operation platform is built by utilizing wall anchors, bottom anchors, channel steel and boards, the wall anchor and the bottom anchor of the upper layer of platform are drilled and installed before blasting at each time, the distance between the two layers of platforms is controlled to be 1.2-1.5 m, the I-shaped steel of the platform, the wall anchor and the bottom anchor and the boards and the I-shaped steel are firmly bound by iron wires, working face operators are not too many, two operators are suitable, the top is knocked from top to bottom, when the operators go up and down, the operators carefully observe the top and bottom board pinestones, find abnormality and timely treat the abnormality.
Step P6, carrying out small-section tunneling on the power distribution chamber: and (4) after the steps P4 and P5 are finished, tunneling along the small section of the distribution chamber 9, and transferring the waste rock to a skip of the rubber belt inclined shaft 1 for discharging the waste rock through a waste rock discharging hopper at the lower opening of the waste rock sliding chute 3.
And step P7, constructing the No. 1 connecting road 10 after the step P6 is completed, and transferring the waste rock to a skip of the rubber belt inclined shaft 1 for discharging the waste rock through a waste rock discharging hopper at the lower opening of the waste rock sliding chute 3.
Step P8, tunneling a large tunnel with a small section: and (4) after the step P7 is finished, performing small-section tunneling on the large piece of road 11, and transferring the gangue into a skip of the rubber belt inclined shaft 1 to discharge the gangue through a gangue discharge hopper at the lower opening of a gangue chute 3.
Step P9, hoisting the small section of the chamber from the upper part of the large part at the tail part of the inclined shaft by using the adhesive tape, and tunneling the small section of the chamber upwards to the top of the chamber: after the step P8 is finished, lifting the upper part of the large part at the tail part of the rubber belt inclined shaft to lift the small section of the underground chamber 12 upwards to the top of the underground chamber, discharging waste rock from the lower opening of the waste rock sliding chute 3, and transferring the waste rock to the skip of the rubber belt inclined shaft 1 to discharge the waste rock.
Step P10, constructing the ore feeding belt way and the big piece well at the tail part of the ore feeding belt way: when the belt inclined shaft is constructed to the position about 5m away from the ore feeding belt way 13, the shaft is dug for layering, the tunneling bottom is lifted and can be made to be horizontal, and the horizontal is equal to or slightly lower than the bottom plate of the ore feeding belt way 13. The belt inclined shaft 1 is used for discharging waste rocks by a rock raking machine, a belt channel 13 for ore is directly excavated and well supported, and meanwhile, a small reversing shaft at the center of a large-piece shaft 14 at the tail part of the belt channel is reversely excavated to the level of the crushing chamber 5 and is expanded and brushed.
And step P11, constructing the No. 3 connecting road 15, and discharging the waste rock by using the inclined shaft rock raking machine.
Step P12, constructing a small reverse well at the center of the large member well at the tail part of the inclined shaft by using the adhesive tape: and (5) after the step P11 is finished, performing small reverse well construction in the center of the large member well 16 at the tail of the inclined shaft by using the inclined shaft rock raking machine to discharge the waste rock.
Step P13, constructing a hoisting chamber at the upper part of the large part at the tail part of the adhesive tape inclined shaft: the tunneling height of the hoisting chamber is 10.85m, the tunneling width is 6.2 multiplied by 4.9m, the concrete supporting thickness is 300mm, the hoisting chamber adopts a chute (avoiding the position of a small raise of a large well) from a large piece passage 11 and a small cross section passage to the top of the chamber, then the construction is carried out by spreading and brushing layer by layer from the top downwards, the gangue slides from the chute to the level of a crushing chamber 5, and the gangue is transferred into a skip of an inclined rubber belt shaft 1 through a gangue discharge funnel at the lower port of a gangue sliding chute 3 to discharge the gangue.
And (4) performing anchor net-jet temporary support after layered tunneling, and performing permanent support from bottom to top after the chamber is completely excavated.
Step P14, expanding and brushing the large-piece well at the tail of the adhesive tape inclined shaft: and (3) expanding and brushing the large tail well 16 of the inclined shaft downwards from the small reverse well in the center of the large tail well, and discharging waste rocks by using an inclined shaft rock raking machine.
Step P15, expanding and brushing the draw shaft and the raw ore bin for supporting construction: the brush is expanded downwards from the horizontal position of 100m below zero, a simple sealing plate, a simple derrick and 4 hoisting wheels with the diameter of 300mm are horizontally arranged at the position of 100m below zero, and two 5-ton stabilizing trucks and two 3-ton stabilizing trucks are arranged in the unloading chambers 20 and 25. Phi 159mm PVC pipe is adopted to convey concrete, 0.15m 3 Forced mixer for mixing material at wellhead. The air compression pipe is a 2-inch rubber hose, the water supply pipe is a 1-inch rubber hose, the rubber air duct with the diameter of 300mm supplies air, and the wall of the air duct is hung. The working face adopts YTP-26 drilling and hole drilling, a metal combined template is used for supporting, gangue is filled in a raise of a measure section, then the gangue is slid to the level of a crushing chamber 5 through a chute 6, a chute 7, an inclined section, a transfer chamber 23 and a raw ore bin 8, and then the gangue is transferred to a gangue sliding chute 3; when the main draw shaft 6 and the main draw shaft 7 are expanded and brushed to support and construct to an inclined section, a detachable half-side platform is made of a bonding anchor at a variable section position, the inclined section draw shaft is constructed by brushing under the platform, most of the working face gangue after blasting slips from a small reverse shaft, and other parts are manually cleaned. The gangue slips to the crushing chamber 5 through the main chute 6, the inclined section 7, the transfer chamber 23 and the small return shaft of the raw ore bin 8, and then is transferred to a gangue slip chute 3; before the original ore bin 8 is expanded and brushed for supporting, the part of the ore bin side of the-200 m middle section ore unloading chamber 22 can be constructed firstly, then the-200 m middle section ore unloading chamber 22 is used as a platform for downward expanding and brushing the original ore bin 8, a well mouth at the-200 m middle section is sealed simply, personnel on and off a rope ladder is adopted, a PVC pipe is placed again to serve as an ash sliding pipe and hung by a steel wire rope well wall, and concrete is placed in the new ash sliding pipe to be placed to a working face in a transferring mode of the-200 middle section ore unloading chamber 22. The air-water pipe and the air duct are connected from an upper drop shaft in an extending way and are hung on the wall of a steel wire rope well in the raw ore bin 8; and the branch orepasses 19 and 24 only synchronously support the expanded brushes 2-3 m at the side openings of the main orepasses and the main orepasses, and the rest parts are expanded and brushed downwards from the upper parts of the branch orepasses 19 and 24.
Before concrete supports of vertical sections of the orepasses 6 and 7 stabilize the mold, the bottom of the periphery of the shaft is dug flat by using an air pick, and the mold plate is required to be seated on solid rock and is not suspended. The bottom of the template needs to be filled with solid, and the template needs to be firmly supported. If the template is suspended due to the deviation of the edge of the central raise, an anchor rod can be additionally arranged at the bottom of the well shaft, and a cushion plate is added to stabilize the template. The accumulated waste rock in the raise is completely discharged, so that the waste rock and concrete slurry leaked from the upper part are prevented from hardening together to block the raise. When the inclined section draw shaft is expanded and brushed, the working surface is made to be horizontal as much as possible, so that the drilling operation is convenient. The bottom of each mould support is also in a horizontal state, and the chute, the funnel mouth 1m of the raw ore bin and the ore feeder chamber are synchronously supported.
Step P16, constructing an ore feeder chamber: after the construction of the slipping system is finished, a feeder chamber 4 is constructed firstly, the chamber is constructed firstly by upward jacking from a small-section channel, the small-section roadway is jacked to the top of the chamber and then layered from the small-section roadway to the construction chamber, after the upper layered layer is subjected to anchor net spraying temporary support, the lower layered layer is constructed by expanding and brushing and is subjected to temporary support, and after a full-section is excavated, the full-section is supported from bottom to top.
Before the construction of the ore feeder chamber 4, a steel beam and a wood plate are adopted to seal the hopper opening of the raw ore bin 8 so as to prevent people from being injured by falling objects. And a reserved supporting section of a funnel of the raw ore bin 8 is synchronously supported with the arch part of the ore feeder chamber 4. The wall part is supported by a wood template, the arch part is supported by a channel steel arch tire and an arch tire plate, and a supporting platform is erected by a support pipe.
Step P17, construction of the power distribution chamber: after the construction of the ore feeding chamber 4 is finished, the distribution chamber 9 is constructed, the section of the distribution chamber 9 is small, the distribution chamber can be expanded and brushed in place for support at one time, and gangue is discharged from a gangue discharging hopper through the lower opening of the gangue sliding chute 3 and is stored in a skip of the rubber belt inclined shaft 1 to be discharged.
The connection part 1m of the feeder chamber 4, the distribution chamber 9 and the crushing chamber 5 is synchronously supported with the crushing chamber 5.
Step P18, constructing the dust removal chamber: the dust removal chamber 17 is constructed by a layering method, wherein after the upper layering tunneling and the supporting are carried out, the lower layering and the supporting are carried out, and the lower layering and the first layering of the left side tunnel of the crushing chamber 5 are synchronously constructed. When the lower layered construction is carried out, the platform at the opening of the chamber and a rock pillar below the step need to be protected, and the waste rock is transferred into a skip of the rubber belt inclined shaft 1 to be discharged through a waste rock discharging funnel at the lower opening of a waste rock sliding chute 3.
At the same time of the construction of the dust removing chamber 17, the No. 2 interconnecting duct 18 is constructed from the dust removing chamber 17 by about 3 m. The 1m of the connection part of the dust removing chamber 17 and the crushing chamber 5 is synchronously supported with the crushing chamber 5.
Step P19, construction of the crushing chamber: the crushing chamber 5 is drilled with the width of 10.5m, the height of 15.8m and the length of 21m, and is supported by reinforced concrete, the chamber is constructed by adopting a pilot chamber layering method, and the surrounding chambers are constructed before the crushing chamber 5 is constructed, so that a wider construction place is formed, and the construction is facilitated. The left and right sides of the chamber are built according to the width of 3.5m, and the middle part is reserved with a rock pillar 28 with the width of 3.5 m. The pilot tunnel is constructed by layering and top-lifting from bottom to top, each side of the tunnel is divided into three layers, the layering height is 4.5m, and the left and right sides of the tunnel 26 and 27 are constructed in parallel by layering. And each layer is picked up twice, the top picking is carried out from one end of the chamber to the other end, and the lower layer is filled with the waste rocks to be used as an operation platform for upper layer construction. When the top is lifted to reach the layering height, the gangue in the layering is emptied, the reinforcing steel bars are bound, the formwork is erected, concrete is poured, and the wall part is supported by a wood formwork. And (3) blanking the ground concrete to the communication measure roadway 2 by adopting a mine car, conveying the ground concrete to the rear part of the rock raking machine, and then manually carrying the ground concrete to a working surface for mixing and pouring. A rock raker is arranged in the ore feeder chamber 4, and the gangue is directly raked into a gangue sliding chute 3. When the pilot tunnel is constructed to an arch layer in a layered mode, the top-picking construction is carried out from one end of the tunnel to the other end of the tunnel, one side of the arch layer is firstly subjected to the top-picking construction, and the anchor net-jet temporary support is carried out. And then, carrying out roof-lifting construction on the other side of the arch layer, carrying out anchor net jet temporary support in the same way, binding reinforcing steel bars after the tunneling on the left side and the right side of the arch layer is finished, and stably casting concrete. The arch part is supported by a I-shaped steel arch tire and a channel steel arch tire plate. After supporting of the chamber arch and walls is completed, a rock pillar 28 is reserved in the center of the chamber from top to bottom in a layering and breaking mode, firstly, a hole is drilled, then, gangue at two sides of the chamber 26 and 27 is discharged according to the layering height and then is blasted and broken, the breaking height is 2-4 m each time, reinforcing steel bars at two side end walls are bound while the central rock pillar 28 is broken in a layering mode, and concrete is poured and supported stably.
When the pilot tunnel is constructed, in order to ensure the construction quality of concrete and accelerate the construction speed, after the construction of the wall concrete is finished and the initial strength is reached, the top raising operation can be carried out without detaching the wall formwork, and the wall formwork protects the concrete from being damaged by blasting rock impact.
Step P20, constructing the large road: after the construction of each chamber and the slipping system is finished, the construction of the large road 11 is carried out.
Step P21, construction of No. 2 connecting road: and after the construction of the large road 11 is finished, constructing the No. 2 connecting road 18, and constructing the No. 2 connecting road 18 from the opening of the large road 11.
Claims (8)
1. A construction method for a crushing chamber system engineering is characterized by comprising the following steps:
step P1, constructing a connection measure roadway between the belt inclined shaft and the ore feeder chamber: when the rubber belt inclined shaft is constructed to the position of the connection measure roadway, excavating the connection measure roadway;
and step P2, constructing a gangue sliding chute between the rubber belt inclined shaft and the ore feeder chamber: the rubber belt inclined shaft is dug downwards continuously, and when the inclined shaft is dug to the position of the waste rock sliding chute, the waste rock sliding chute is dug backwards and communicated with a communication measure roadway;
step P3, constructing the small section of the ore feeder chamber: constructing along the small section of the ore feeder chamber, and transferring the waste rock from a waste rock discharging hopper to a rubber belt inclined shaft skip through a lower opening of a waste rock sliding chute to discharge the waste rock;
step P4, carrying out small-section tunneling on the crushing chamber: tunneling along the small section of the crushing chamber, and transferring the gangue into a rubber belt inclined shaft skip for discharging the gangue through a gangue discharging funnel at the lower opening of a gangue sliding chute;
step P5, constructing two main draw shafts, a raw ore bin raise and a two-day well center hoisting pot hole: digging out the position of the raise by adopting a bucket reversing construction method, digging out a central bucket hole of the two-day well, punching the central bucket hole by adopting a geological drilling machine, turning the gangue into a gangue sliding chute nearby after the gangue slides to the level of the crushing chamber from a working surface, and transferring the gangue into a rubber belt inclined shaft skip for lifting out; constructing a main orepass inclined part, a branch orepass and a raw ore bin by adopting a common raise-back method, wherein the main orepass inclined part and a small raise in the center of the raw ore bin are reversely dug upwards from an ore feeder chamber, the small raise in the center of the raw ore bin is dug to the main orepass inclined part for time sharing, the branch reversely digs small raise in No. 1 and No. 2 main orepass inclined parts to two sides and is communicated with a main orepass raise, and gangue slides to the ore feeder chamber along the small raise and slides into a gangue chute nearby; when the main orepass is expanded and brushed to the position of the branch orepass, reversely digging a small reverse shaft of the branch orepass to an ore unloading chamber;
step P6, carrying out small-section tunneling on the power distribution chamber: tunneling along the small section of the distribution chamber, and transferring the gangue into a rubber belt inclined shaft skip for discharging the gangue through a gangue discharge hopper at the lower port of a gangue chute;
step P7, construction of No. 1 connecting road: construction of a No. 1 connecting road is carried out, and gangue is transferred into a rubber belt inclined shaft skip through a gangue discharge hopper at the lower opening of a gangue sliding chute to be discharged;
step P8, tunneling a large tunnel with a small section: performing small-section tunneling on the large piece of road, and transferring the waste rock to a rubber belt inclined shaft skip through a waste rock discharging funnel at the lower opening of a waste rock sliding chute to discharge the waste rock;
step P9, hoisting the small section of the chamber from the upper part of the large part at the tail part of the inclined shaft by using the adhesive tape, and tunneling the small section of the chamber upwards to the top of the chamber: hoisting the small section of the chamber along the upper part of the large member well at the tail part of the rubber belt inclined shaft, and tunneling the chamber upwards to the top of the chamber, wherein the waste rock is dumped into a rubber belt inclined shaft skip through a waste rock discharging funnel at the lower opening of a waste rock sliding chute to discharge the waste rock;
step P10, constructing the ore feeding belt way and the big piece well at the tail part of the ore feeding belt way: when the rubber belt inclined shaft is constructed to a position 5m away from the ore feeding belt way, firstly, a shaft is dug for layering, the bottom of a tunneling shaft is lifted to be horizontal, the level is kept level with the bottom plate of the ore feeding belt way, a rock raking machine of the inclined shaft is used for removing waste rocks, the ore feeding belt way is directly dug out and supported, and meanwhile, a small reverse shaft in the center of a large workpiece well at the tail part of the inclined shaft is reversely dug to be horizontal to a crushing chamber and is expanded and brushed;
step P11, constructing a No. 3 connecting road, and discharging waste rocks by using an inclined shaft rock raking machine;
step P12, constructing a small reverse well at the center of the large member well at the tail part of the inclined shaft by using the adhesive tape: performing small reverse well construction of a large well center at the tail part of the inclined shaft by using an inclined shaft rock raking machine;
step P13, constructing a hoisting chamber at the upper part of the large part at the tail part of the adhesive tape inclined shaft: the hoisting chamber adopts a chute which is arranged from a large-piece tunnel small-section roadway to the top of the chamber, the chute avoids the position of a large-piece well small reversal well, then the construction is carried out from the top to the lower part in a layered expanding and brushing manner, the waste rock slides from the chute to the level of the crushing chamber, and the waste rock is transferred to a rubber belt inclined shaft skip for discharging the waste rock through a waste rock sliding chute lower port discharge hopper;
step P14, expanding and brushing the large-piece well at the tail of the adhesive tape inclined shaft: expanding and brushing a large tail well of the rubber belt inclined shaft downwards from a small reverse well in the center of the large tail well, and discharging waste rocks by using an inclined shaft rock raking machine;
step P15, expanding and brushing the draw shaft and the raw ore bin for supporting construction: the vertical section of the main chute is horizontally expanded downwards, waste rocks are filled in the raise shaft of the measure section firstly, then the waste rocks are slid to the crushing level through the inclined section chute, the transfer chamber and the small reverse shaft of the raw ore bin, and transferred to a waste rock sliding chute; when the main orepass is subjected to expanded brush support construction to an inclined section, a bonding anchor is used as a detachable half-side platform at the position of a variable section, and an orepass of the inclined section is constructed by using a lower brush of the platform; before the expansion brush support of the raw ore bin, constructing the side part of the ore bin of the middle-section ore unloading chamber, and then expanding and brushing the construction raw ore bin downwards by taking the ore unloading chamber as a platform; the branch drop shaft only synchronously supports the expanding brushes 2-3 m at the side opening of the main drop shaft and the main drop shaft, and the rest part is expanded and brushed downwards from the upper part of the branch drop shaft for construction;
step P16, constructing an ore feeder chamber: the construction method comprises the following steps of constructing a mine feeding machine chamber, wherein the chamber is constructed by firstly carrying out upward top lifting construction from a small-section channel, carrying out expanded brushing on the constructed chamber from a small-section lane after the small-section lane is carried out to the top of the chamber, carrying out expanded brushing on the upper layer of the chamber, carrying out expanded brushing on the lower layer and carrying out temporary supporting after anchor net spraying temporary supporting is carried out on the upper layer, and carrying out supporting from bottom to top after a full-section is excavated;
step P17, construction of the power distribution chamber: constructing a distribution chamber, performing primary expanding brushing and supporting on the distribution chamber, and transferring waste rock to a rubber belt inclined shaft skip for discharging the waste rock through a waste rock discharging funnel at the lower opening of a waste rock sliding chute;
step P18, constructing the dust removal chamber: constructing by a layering method, namely, firstly tunneling and supporting the upper layer, then constructing and supporting the lower layer, and synchronously constructing the lower layer and the first layer of the crushing chamber left side guide tunnel; when the lower layered construction is carried out, a platform at the opening of the chamber and a rock pillar below the step are protected, and the waste rock is transferred to a rubber belt inclined shaft skip for discharging the waste rock through a waste rock discharging funnel at the lower opening of a waste rock sliding chute;
step P19, construction of the crushing chamber: construction is carried out by adopting a pilot cave layering method, before construction of a crushing cave, the cave around the crushing cave is constructed, a wide construction place is formed, so that the construction is facilitated, and waste rocks are dumped into a rubber belt inclined shaft skip through a waste rock discharging funnel at the lower opening of a waste rock sliding chute to discharge the waste rocks;
step P20, constructing the large road: after the construction of each chamber and the sliding breaking system is finished, large-piece road construction is carried out;
step P21, construction of No. 2 connecting road: and (4) carrying out construction of the No. 2 connecting channel, and constructing the No. 2 connecting channel from the opening of the large channel.
2. The crushing chamber system engineering construction method of claim 1, wherein in the step P5, for the construction of the vertical part of the main orepass, the position of the raise is excavated by a tank-lifting raise-reversing construction method, the raise is ventilated through a tank-lifting hole, two persons only work on the tank-lifting, when the tank-lifting is operated up and down, the top protective umbrella is opened, the operator can observe the wall of the well at any time, loose gangue and live rocks are found, the tank is immediately stopped for treatment, and when the tank reaches the top working face, the operator stands under the protective umbrella to treat the top plate; because the hanging tank hole is inclined, the hanging tank collides the well wall when going up and down, the safety belt is tied by personnel, and the tank is immediately stopped for treatment when collision occurs; and for the inclined part of the main draw shaft, the branch draw shafts and the raw ore bin, the common reverse shaft method is adopted for construction, an operation platform is built by utilizing wall anchors, bottom anchors, channel steel and boards, the previous layer of platform wall anchors and bottom anchors are drilled and installed before blasting at each time, the distance between two layers of platforms is controlled to be 1.2-1.5 m, the platform I-steel, the wall anchors and the bottom anchors are firmly bound by iron wires, two workers are working face operation personnel, the knocking is carried out from top to bottom, the workers carefully observe the top bunding and the bottom board loose stones when going up and down, and the abnormal condition is found and timely processed.
3. The crushing chamber system engineering construction method of claim 1, wherein in the step P13, anchor net-jet temporary support is performed after layered excavation, and permanent support is performed from bottom to top after the chamber is completely excavated.
4. The crushing chamber system engineering construction method of claim 1, wherein in the step P15, before concrete support and stabilization of the vertical shaft, the bottom of the shaft is chiseled by a pneumatic pick, and the template is seated on the solid rock without suspension; the bottom of the template is filled with the solid and the template is firmly supported; if the template is suspended due to the deviation of the edge of the central patio, an anchor rod is additionally arranged at the bottom of the shaft, and a cushion plate is added to stabilize the template; when the inclined section draw shaft expands and brushes and constructs, the working face is made into the level, facilitate the operation of drilling; the bottom of each mould support is in a horizontal state, and the chute, a raw ore bin funnel mouth 1m and the chamber are synchronously supported.
5. The crushing chamber system engineering construction method of claim 1, wherein in the step P16, before the ore feeder chamber is constructed, the hopper mouth of the raw ore bin is sealed by steel beams or wood plates to prevent people from being injured by falling objects; synchronously supporting a reserved supporting section of a raw ore bin funnel and an arch part of an ore feeder chamber; the wall part is supported by a wood template, the arch part is supported by a channel steel arch tire and an arch tire plate, and a supporting platform is erected by a support pipe.
6. The crushing chamber system engineering construction method of claim 1, wherein in step P17, the feeder chamber, the distribution chamber and the crushing chamber are synchronously supported at 1m from the connection point of the feeder chamber, the distribution chamber and the crushing chamber.
7. The crushing chamber system engineering construction method according to claim 1, wherein in the step P18, a No. 2 connecting road 3m is constructed from the dust removing chamber while the dust removing chamber is constructed; and the 1m joint of the dust removal chamber and the crushing chamber is synchronously supported with the crushing chamber.
8. The crushing chamber system engineering construction method of claim 1, wherein in the step P19, in order to ensure the concrete construction quality and accelerate the construction speed during the pilot chamber construction, the top-lifting operation is performed without detaching the wall form after the wall concrete construction is completed and the initial strength is reached, and the wall form protects the concrete from the impact of the blasting rocks.
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