CN111894669B - Rapid construction method of novel purification barrier structure - Google Patents
Rapid construction method of novel purification barrier structure Download PDFInfo
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- CN111894669B CN111894669B CN202010654603.9A CN202010654603A CN111894669B CN 111894669 B CN111894669 B CN 111894669B CN 202010654603 A CN202010654603 A CN 202010654603A CN 111894669 B CN111894669 B CN 111894669B
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- 238000000746 purification Methods 0.000 title claims abstract description 48
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 230000004888 barrier function Effects 0.000 title claims description 13
- 238000011049 filling Methods 0.000 claims abstract description 67
- 239000000463 material Substances 0.000 claims abstract description 50
- 229910052751 metal Inorganic materials 0.000 claims abstract description 44
- 239000002184 metal Substances 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 230000008093 supporting effect Effects 0.000 claims abstract description 27
- 238000005553 drilling Methods 0.000 claims abstract description 17
- 239000004746 geotextile Substances 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 9
- 231100000719 pollutant Toxicity 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 239000011435 rock Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000004744 fabric Substances 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 8
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 8
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 8
- 239000000920 calcium hydroxide Substances 0.000 claims description 8
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- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 230000035699 permeability Effects 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000000356 contaminant Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000004049 embossing Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- ITCAUAYQCALGGV-XTICBAGASA-M sodium;(1r,4ar,4br,10ar)-1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylate Chemical compound [Na+].C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C([O-])=O ITCAUAYQCALGGV-XTICBAGASA-M 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
- E21F15/04—Stowing mats; Goaf wire netting; Partition walls
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention provides a rapid construction method of a novel purification baffle structure, which comprises the steps of drilling two rows of fixing holes at positions with better stability in a roadway, sequentially adopting a fixing structure to connect a filter layer and a supporting layer with the periphery of the roadway, arranging a long strip bag which is made of non-woven geotextile and is reserved with a long tube in advance between the filter layer and the supporting layer, vertically suspending other long strip bags on the filter layer fixing structure or a metal net except for one long strip bag which is horizontally arranged at the bottom and the top, sequentially filling purification materials into the long strip bags from a long tube opening through a grouting machine, coordinating and densely filling spaces by adjusting the long strip bags at the bottom and the top, ensuring that no gap is formed, periodically checking the content of pollutant components in seepage water, and replacing the purification materials again when the content exceeds an allowable value. The technical scheme of the invention has the advantages of simple construction, short construction period, good water filtering property, flexible support and the like, and can effectively purify heavy metal pollution brought by seepage water of a filling stope and protect mine and surrounding water environment.
Description
Technical Field
The invention discloses a rapid construction method of a novel purification and separation structure, which is particularly suitable for underground filling mines with developed underground water and harmful pollution sources in fillers.
Background
In the filling mining method, the construction of an isolation retaining wall is an essential process. Conventional retaining walls are typically gravity retaining walls such as brick, concrete, or steel-concrete. The retaining wall construction mode has large workload and long time consumption, and is easy to deform, crack and even collapse locally. When the thickness of the retaining wall is larger, the water filtering effect is poor, the early strength of the filling body is easily lower, and the expected supporting effect cannot be achieved. The mine is filled in the underground with the harmful pollution sources in the filling materials, and the pollutants flow to all parts of the mine along with the seepage water under the action of gravity and finally flow into the underground water pump room and are lifted to the ground surface, so that the pollutants are diffused in a large range, and the water quality around the mine is greatly polluted. Therefore, the invention provides a novel rapid construction method of a purification and separation structure, aiming at realizing rapid construction of a high-strength separation retaining wall and achieving the effect of treating and filling pollutants from the source.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the traditional retaining wall construction mode has large workload, long time consumption and low strength, and the filled pollutants are easy to diffuse along with underground seepage water. In order to realize efficient, safe and environment-friendly mining and build a convenient and fast separating and retaining structure with a purifying effect, a novel purifying and retaining structure rapid building method suitable for underground filling mines with underground water development and harmful pollution sources in fillers is provided.
The technical scheme of the invention is as follows:
the utility model provides a novel purify and separate fender structure, toward including water filtering layer, purification layer and supporting layer three layer construction and fixed knot outward in proper order by filling the stope and construct, its characterized in that, the water filtering layer comprises high strength metal net and the combination of non-woven geotechnological cloth, the filling body in the non-woven geotechnological cloth contact stope, high strength metal net is in the same place through the thin needle combination of wearing the resin material line with non-woven geotechnological cloth, the supporting layer comprises high strength metal net and thick reinforcing bar, through fixed knot constructs and is fixed in on the tunnel section with water filtering layer and supporting layer respectively, it comprises the rectangular bag that has purification material to purify the layer by a plurality of fillings, rectangular bag hangs perpendicularly on the fixed knot at tunnel top constructs or on the high strength metal net of water filtering layer.
Furthermore, in the filter layer, in order to avoid obvious gaps from being left around, the number of the strip bags which need to be vertically suspended is enough, the intervals are moderate, meanwhile, a strip bag is horizontally arranged at the bottom of the roadway in advance, a strip bag is arranged at the top of the roadway along the arc vault, the strip bag at the bottom is half filled before the vertical strip bag is filled with the purifying material, and the strip bag at the top is filled after the vertical strip bag is filled with the purifying material until the whole section is completely filled.
Furthermore, the high-strength metal net is preferably made of a material with dense embossing meshes, large wire diameter and corrosion resistance, and meanwhile, the edge of the metal net is subjected to special welding treatment by using thick reinforcing steel bars so as to prevent the metal net from falling and deforming.
Further, the non-woven geotextile that the preferred corrosion-resistant of rectangular bag, permeability are good, intensity is high forms through high strength resin material line sewing, and inserts a segment PVC long tube in one side sack department, and the sack is tied tightly and is left sufficient rope length through the binding rope and be convenient for hang on metal mesh top or fixing device, the rectangular bag length of hanging perpendicularly slightly is greater than the tunnel height, and the bag width is the interval between 4-5 times water filter layer and the supporting layer, the rectangular bag length of bottom and top slightly is greater than the length of tunnel section.
Further, the fixing structure comprises a nut, a base plate and a slotted hollow rod body, the rod body with the outer diameter of 33mm and the length of 0.8m is preferred, and the size of the base plate is not less than 2-3 times of the size of a mesh of the metal net.
Further, the purification material is prepared by uniformly stirring and mixing hydrated lime, fine sand and activated carbon, a proper amount of water is added to prepare a paste with good fluidity, the specific proportion depends on the pollution degree and the water seepage amount of a stope, if the pollution is high and the water seepage amount is small, the high proportion of the hydrated lime and the activated carbon is preferred, and on the contrary, the fine sand amount is increased.
Further, in order to increase the permeability of the purifying material, a certain concentration of air entraining agent can be added, and a 0.6% sodium abietate solution is preferred.
Further, the purification material may be suitably supplemented with one or more effective purification substances, depending on the particular fill contaminant.
A rapid construction method applied to the novel purification and separation structure comprises the following steps:
(1) selecting a position with good stability of a rock mass around a roadway section of a stope to be filled, preferably near the filling stope and without obvious fault joint development, uniformly marking two rows of positions of the fixing holes on the selected section, drilling by using a drilling rock drill, blowing off rock powder in the hole by using compressed air, wherein the diameter of the drilling hole is slightly smaller than that of a slotted hollow rod piece of a fixing device, so that the drilling hole is vertically driven into the rock mass, and the hole skewness is smaller than one percent;
(2) constructing a filter layer, namely combining a high-strength metal net with the length and width slightly larger than the section of the roadway with the non-woven geotextile through thin needles penetrated with resin material threads according to the size of the section of the roadway, and fixing the non-woven geotextile and the high-strength metal net on the periphery of the section of the roadway through a fixing structure, wherein the non-woven geotextile is directly contacted with a filling body in a stope to play a role in filtering, and the high-strength metal net is tightly contacted with the non-woven geotextile to passively bear the lateral pressure transmitted by the filling body; after the filter layer is constructed, a strip-shaped empty bag is horizontally arranged at the bottom of the roadway, then the strip-shaped empty bag is vertically suspended on a high-strength metal net of the filter layer or a fixed structure for fixing the filter layer at certain intervals, and finally the strip-shaped empty bag is arranged at the top along the arc-shaped roadway.
(3) The supporting layer is constructed, a certain distance is kept from the filtering layer, the high-strength metal mesh with the length and width slightly larger than the section is fixed on the periphery of the section of the roadway through a fixing structure, two ends of the thickened steel bar are respectively welded with an upper fixing structure, a lower fixing structure and/or a left fixing structure and a right fixing structure to form a whole, and the thickened steel bar indirectly and passively bears the lateral pressure transmitted by the filling body;
(4) filling a purifying material, namely filling the purifying material formed by mixing hydrated lime, fine sand and activated carbon into a reserved PVC long pipe from the pipe orifice of the long pipe by a grouting machine, filling a long bag horizontally arranged at the bottom in half, filling vertically suspended long bags from the middle to two sides in sequence, filling one long bag and then blocking the pipe orifice, ensuring that the middle of a filter layer and a supporting layer is completely filled after all the long bags are filled, filling the long bags arranged along the arc shape of a roadway at the top, adjusting the filling degree of each bag, and ensuring that no obvious gap exists;
(5) periodic inspection and replacement of the purification material. Testing and checking the concentration of main pollutant components of seepage water of a filling stope, when the concentration exceeds a specified value, directly opening a supporting layer in the stope with better cementing and filling effects, taking out the strip bags filled with the invalid purifying materials, rearranging and filling new strip bags with pipe orifices and the supporting layer, and carrying out centralized treatment on the invalid purifying materials; and a stope with poor cemented filling effect or non-cemented filling needs to be closely attached to the original baffle structure to arrange a new purification layer and a support layer without ribs.
Furthermore, the row spacing of the fixing holes is 30-35 cm, the depth of the drilling holes is 0.8-1.2m, the aperture is slightly smaller than the diameter of the slotted hollow rod piece of the fixing device, the number of the slotted hollow rod pieces is 10-15, and the fixed hole row spacing is determined according to the section size.
Advantageous effects
The novel purification and separation structure rapid construction method adopting the technical scheme has the following two outstanding advantages: (1) compared with the conventional gravity retaining wall, the retaining structure is formed by combining the high-strength metal mesh and the non-woven geotextile with good water filtering property, so that the construction is simple, the construction period is short, the water filtering property is good, and the retaining structure has the advantage of flexible support; (2) the purification layer contains special purification materials, can be used for performing targeted neutralization and adsorption treatment on pollutants contained in the filling body, particularly heavy metal ions, effectively purifies the pollution brought by seepage water of a filling stope, and protects the mine water environment.
Drawings
FIG. 1 is a front view and a partial enlarged view of a novel purification barrier structure of the present invention;
FIG. 2 is a side view of the filter layer of a novel purification barrier of the present invention;
FIG. 3 is a side view of the support layer of a novel purification barrier structure of the present invention;
FIG. 4 is a side view of a purification layer of a novel purification barrier construction of the present invention;
FIG. 5 is a partial view of the cross-section I-I of FIG. 4 of the present invention;
FIG. 6 is a schematic view of a fixing device of a novel purification barrier structure according to the present invention;
in the figure: 1-filling stope, 2-roadway, 3-high-strength metal net, 4-non-woven geotextile, 5-fixed structure, 6-vertically hanging long strip bag, 7-horizontally arranging long strip bag at bottom, 8-arcuately arranging long strip bag at top, 9-thickening reinforcing steel bar, 10-nut, 11-backing plate, 12-slotted hollow rod body, 13-binding rope
Detailed Description
The technical solution of the present invention will be further described with reference to the accompanying drawings and examples:
the utility model provides a novel purify and separate fender structure, by filling 1 interior toward including in proper order outward filter layer, purification layer and supporting layer three layer construction and fixed knot construct 5, its characterized in that, the filter layer comprises high strength metal net 3 and the combination of non-woven geotechnological cloth 4, fill the packing body in the non-woven geotechnological cloth 4 contact stope, high strength metal net 3 is in the same place through the thin needle combination of wearing the resin material line with non-woven geotechnological cloth 4, the supporting layer comprises high strength metal net 3 and thick reinforcing bar 9, through fixed knot constructs 5 and is fixed in on the tunnel section with filter layer and supporting layer respectively, it comprises a plurality of rectangular bags 6 that are filled with purifying material to purify the layer, rectangular bag hangs perpendicularly on the fixed knot constructs 5 at tunnel top or on the high strength metal net 3 of filter layer.
Furthermore, in the filter layer, in order to avoid obvious gaps from being left around, the number of the vertically suspended strip bags 6 is ensured to be enough, the intervals are moderate, meanwhile, a strip bag 7 is horizontally arranged at the bottom of the roadway in advance, a strip bag 8 is arranged at the top of the roadway along the arc vault, the strip bag 7 at the bottom is half filled before the vertical strip bag 6 is filled with the purification material, and the strip bag 8 at the top is filled after the vertical strip bag 6 is filled with the purification material until the whole section is completely filled.
Furthermore, the high-strength metal net 3 is preferably made of a corrosion-resistant material with dense embossing meshes and large wire diameter, and meanwhile, the edge of the metal net is subjected to special welding treatment by using thick reinforcing steel bars so as to prevent the metal net from falling and deforming.
Further, the non-woven geotextile that the preferred corrosion-resistant of rectangular bag, permeability are good, intensity is high forms through high strength resin material line sewing, and inserts a segment PVC long tube in one side sack department, and the sack is tied tightly and is left sufficient rope length through tie rope 13 and be convenient for hang on metal mesh top or fixing device, the rectangular bag length of hanging perpendicularly slightly is greater than the tunnel height, and the bag width is the interval between 4-5 times water filter layer and the supporting layer, the rectangular bag length of bottom and top slightly is greater than the length of tunnel section.
Further, the fixing structure 5 comprises a nut 10, a backing plate 11 and a slotted hollow rod body 12, the rod body with the outer diameter of 33mm and the length of 0.8m is preferred, and the size of the backing plate is not less than 2-3 times of the mesh size of the metal net.
Further, the purification material is prepared by uniformly stirring and mixing hydrated lime, fine sand and activated carbon, a proper amount of water is added to prepare a paste with good fluidity, the specific proportion depends on the pollution degree and the water seepage amount of a stope, if the pollution is high and the water seepage amount is small, the high proportion of the hydrated lime and the activated carbon is preferred, and on the contrary, the fine sand amount is increased.
Further, in order to increase the permeability of the purifying material, a certain concentration of air entraining agent can be added, and a 0.6% sodium abietate solution is preferred.
Further, the purification material may be suitably supplemented with one or more effective purification substances, depending on the particular fill contaminant.
A rapid construction method applied to the novel purification and separation structure comprises the following steps:
(1) selecting and drilling fixed holes, selecting the positions with better stability of rock mass around the roadway section of the stope 1 to be filled, preferably near the filling stope and without obvious fault joint development, uniformly marking the positions of two rows of fixed holes on the selected section, drilling by using a drilling rock drill, blowing off rock powder in the holes by using compressed air, wherein the diameter of the drilled holes is slightly smaller than that of a slotted hollow rod 12 of a fixing device 5, ensuring that the drilled holes are vertically driven into the rock mass, and the hole deflection rate is less than one percent;
(2) constructing a filter layer, namely combining a high-strength metal net 3 with the length and width slightly larger than the section of the roadway with a non-woven geotextile 4 through fine needles penetrated with resin material threads according to the size of the section of the roadway, and fixing the combination to the periphery of the section of the roadway through a fixing structure 5, wherein the non-woven geotextile 4 is in direct contact with a filling body in a stope to play a role in filtering, and the high-strength metal net 3 is in close contact with the non-woven geotextile 4 to passively bear the lateral pressure transmitted by the filling body; after the filter layer is constructed, a strip-shaped empty bag 7 is horizontally arranged at the bottom of the roadway, then strip-shaped empty bags 6 are vertically hung on the high-strength metal net 3 of the filter layer or the fixed structure 5 for fixing the filter layer at certain intervals, and finally a strip-shaped empty bag 8 is arranged at the top along the arc-shaped roadway.
(3) The supporting layer is constructed, a certain distance is kept from the filtering layer, the high-strength metal mesh 3 with the length and width slightly larger than the section is fixed around the section of the roadway through a fixing structure, two ends of the thickened steel bar 9 are respectively welded with the upper fixing structure and the lower fixing structure and/or the left fixing structure and the right fixing structure 5 to form a whole, and the lateral pressure transmitted by the filling body is indirectly and passively borne;
(4) filling a purifying material, namely filling the purifying material formed by mixing hydrated lime, fine sand and activated carbon into a reserved PVC long pipe from the pipe orifice of the long pipe by a grouting machine, filling a long bag 7 horizontally arranged at the bottom in half, filling vertically suspended long bags 6 from the middle to two sides in sequence, filling one long bag and then blocking the pipe orifice, ensuring that the middle of a filter layer and a supporting layer is completely filled after all the long bags are filled, filling a long bag 8 arranged at the top along the arc shape of a roadway, adjusting the filling degree of each bag, and ensuring that no obvious gap exists;
because the rectangular bag of bottom is half the filling state, when the rectangular bag that hangs perpendicularly that fills the completion contacts with rectangular bag in bottom, can guarantee that there is not obvious gap around the bottom, of course, the filling volume of the rectangular bag in bottom can be adjusted according to on-the-spot actual conditions, can suitably reduce or add the volume, as long as reach the effect that the bottom does not have obvious gap. In addition, the filling elongated bag is arranged on the top, so that the gap on the upper part can be filled, when the elongated bag on the top is filled, the elongated bag can partially bear on the vertically hung elongated bag, and the gap on the upper part is compacted and filled.
(5) Periodic inspection and replacement of the purification material. Testing and checking the concentration of main pollutant components of seepage water of a filling stope, when the concentration exceeds a specified value, directly opening a supporting layer in the stope with better cementing and filling effects, taking out the strip bags filled with the invalid purifying materials, rearranging and filling new strip bags with pipe orifices and the supporting layer, and carrying out centralized treatment on the invalid purifying materials; and a stope with poor cemented filling effect or non-cemented filling needs to be closely attached to the original baffle structure to arrange a new purification layer and a support layer without ribs.
Furthermore, the row spacing of the fixing holes is 30-35 cm, the depth of the drilling holes is 0.8-1.2m, the aperture is slightly smaller than the diameter of the slotted hollow rod piece of the fixing device, the number of the slotted hollow rod pieces is 10-15, and the fixed hole row spacing is determined according to the section size.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The utility model provides a novel purify and separate quick construction method of fender structure, novel purify and separate fender structure by filling toward outer filter layer, purification layer and supporting layer three layer construction and the fixed knot structure of including in the stope in proper order, the filter layer comprises high strength metal net and the combination of non-woven geotechnological cloth, the filling body in the non-woven geotechnological cloth contact stope, the high strength metal net is in the same place through the thin needle combination of wearing resin material line with the non-woven geotechnological cloth, the supporting layer comprises high strength metal net and thick reinforcing bar, through fixed knot constructs respectively with filter layer and supporting layer on the tunnel section, purify the layer and comprise a plurality of rectangular bags that are filled with purifying material, rectangular bag hangs perpendicularly on the fixed knot structure at tunnel top or on the high strength metal net of filter layer, its characterized in that, the method includes following step:
(1) selecting a position with good stability of a rock mass around a roadway section of a stope to be filled, preferably near the filling stope and without obvious fault joint development, uniformly marking two rows of positions of the fixing holes on the selected section, drilling by using a drilling rock drill, blowing off rock powder in the hole by using compressed air, wherein the diameter of the drilling hole is slightly smaller than that of a slotted hollow rod piece of a fixing device, so that the drilling hole is vertically driven into the rock mass, and the hole skewness is smaller than one percent;
(2) constructing a filter layer, namely combining a high-strength metal net with the length and width slightly larger than the section of the roadway with the non-woven geotextile through thin needles penetrated with resin material threads according to the size of the section of the roadway, and fixing the non-woven geotextile and the high-strength metal net on the periphery of the section of the roadway through a fixing structure, wherein the non-woven geotextile is directly contacted with a filling body in a stope to play a role in filtering, and the high-strength metal net is tightly contacted with the non-woven geotextile to passively bear the lateral pressure transmitted by the filling body; after the filter layer is constructed, horizontally arranging a long strip of empty bag at the bottom of the roadway, vertically hanging the long strip of empty bag on a high-strength metal net of the filter layer or a fixed structure for fixing the filter layer at certain intervals, and finally arranging a long strip of empty bag at the top along the arc roadway;
(3) the supporting layer is constructed, a certain distance is kept from the filtering layer, the high-strength metal mesh with the length and width slightly larger than the section is fixed on the periphery of the section of the roadway through a fixing structure, two ends of the thickened steel bar are respectively welded with an upper fixing structure, a lower fixing structure and/or a left fixing structure and a right fixing structure to form a whole, and the thickened steel bar indirectly and passively bears the lateral pressure transmitted by the filling body;
(4) filling a purifying material, namely filling the purifying material formed by mixing hydrated lime, fine sand and activated carbon into a reserved PVC long pipe from the pipe orifice of the long pipe by a grouting machine, filling a long bag horizontally arranged at the bottom in half, filling vertically suspended long bags from the middle to two sides in sequence, filling one long bag and then blocking the pipe orifice, ensuring that the middle of a filter layer and a supporting layer is completely filled after all the long bags are filled, filling the long bags arranged along the arc shape of a roadway at the top, adjusting the filling degree of each bag, and ensuring that no obvious gap exists;
(5) regular inspection and replacement of the purification materials, testing and inspecting the concentration of main pollutant components of seepage water of a filling stope, when the concentration exceeds a specified value, directly opening a supporting layer in the stope with better cementing and filling effects, taking out the strip bags filled with the invalid purification materials, rearranging new strip bags filled with pipe orifices and the supporting layer, and carrying out centralized treatment on the invalid purification materials; and a stope with poor cemented filling effect or non-cemented filling needs to be closely attached to the original baffle structure to arrange a new purification layer and a support layer without ribs.
2. The rapid construction method of a novel purification barrier structure as claimed in claim 1, wherein the row spacing of the fixing holes is 30-35 cm, the depth of the drilling holes is 0.8-1.2m, the diameter of the drilling holes is slightly smaller than the diameter of the slotted hollow rod of the fixing device, and the number of the drilling holes is 10-15, which depends on the section size.
3. The method for rapidly constructing a novel purification barrier structure as claimed in claim 1, wherein the number of the vertically suspended strip bags is sufficiently large and the interval is moderate in order to avoid a significant gap from the periphery in the filter layer, the strip bags are horizontally arranged at the bottom of the roadway in advance, the strip bags are arranged at the top of the roadway along the arc vault, the strip bags at the bottom are half filled before the vertical strip bags are filled with the purification material, and the strip bags at the top are filled after the vertical strip bags are filled with the purification material until the whole section is completely filled.
4. The method as claimed in claim 1, wherein the high-strength metal net is made of corrosion-resistant material with dense embossed meshes and large wire diameter, and the edges of the metal net are welded with thick steel bars to prevent the metal net from falling and deforming.
5. The method for rapidly constructing a novel purification barrier structure according to claim 1, wherein the long bag is made of non-woven geotextile with corrosion resistance, good permeability and high strength, and is sewn by high-strength resin material threads, a small section of PVC long pipe is inserted into one side of the bag opening, the bag opening is tightly bound by a binding rope, the length of the rope is enough to be hung on the top of the metal net or on a fixing device, the length of the vertically suspended long bag is slightly larger than the height of the roadway, the width of the bag is 4-5 times the distance between the water filtering layer and the supporting layer, and the lengths of the long bags at the bottom and the top are slightly larger than the length of the section of the roadway.
6. The method for rapidly constructing a novel purification barrier structure as claimed in claim 1, wherein the fixing structure comprises a nut, a backing plate and a slotted hollow rod body, and the size of the backing plate is not less than 2-3 times of the mesh size of the metal mesh.
7. The method for rapidly constructing a novel purification barrier structure according to claim 1, wherein the purification material is prepared by uniformly stirring and mixing hydrated lime, fine sand and activated carbon, and adding a proper amount of water to prepare a paste with good fluidity, wherein the specific ratio depends on the pollution level and the water seepage amount of the stope.
8. The method for rapidly constructing a novel purifying barrier structure as claimed in claim 1, wherein a concentration of air entraining agent is added to increase the permeability of the purifying material.
9. The method of claim 1, wherein the purification material is selected from one or more effective purification materials according to the specific contaminant to be filled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010654603.9A CN111894669B (en) | 2020-07-09 | 2020-07-09 | Rapid construction method of novel purification barrier structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010654603.9A CN111894669B (en) | 2020-07-09 | 2020-07-09 | Rapid construction method of novel purification barrier structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111894669A CN111894669A (en) | 2020-11-06 |
| CN111894669B true CN111894669B (en) | 2021-08-24 |
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| CN202010654603.9A Active CN111894669B (en) | 2020-07-09 | 2020-07-09 | Rapid construction method of novel purification barrier structure |
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| CN204152551U (en) * | 2014-09-10 | 2015-02-11 | 武汉钢铁集团开圣科技有限责任公司 | A kind of reusable mine down-hole filling barricade |
| CN104405441B (en) * | 2014-11-18 | 2017-01-18 | 武汉钢铁(集团)公司 | Detachable filling and retaining wall |
| CN107165671A (en) * | 2017-07-13 | 2017-09-15 | 长春黄金研究院 | A kind of tailing-filled overall height dehydration barricade |
| CN208294566U (en) * | 2018-03-16 | 2018-12-28 | 河北钢铁集团矿业有限公司 | A kind of high concentration tailing cemented filling metal mesh structure barricade |
| CN108590751B (en) * | 2018-06-26 | 2023-11-17 | 中南大学 | Mine underground tailing water in-situ treatment method and permeable reaction filling retaining wall |
| CN108952804B (en) * | 2018-08-08 | 2023-08-18 | 长沙矿山研究院有限责任公司 | Tailing filling retaining wall for blocking mining roadway of goaf to be filled and construction method |
| CN110454220A (en) * | 2019-08-07 | 2019-11-15 | 中国恩菲工程技术有限公司 | Assembled reusable flexible filling barricade |
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