CN219298275U - Multi-functional infiltration line observation well of heavy-calibre deep hole - Google Patents
Multi-functional infiltration line observation well of heavy-calibre deep hole Download PDFInfo
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- CN219298275U CN219298275U CN202320459969.XU CN202320459969U CN219298275U CN 219298275 U CN219298275 U CN 219298275U CN 202320459969 U CN202320459969 U CN 202320459969U CN 219298275 U CN219298275 U CN 219298275U
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Abstract
The utility model provides a large-caliber deep hole multifunctional immersion line observation well, and belongs to the technical field of tailing ponds. Said. The bottom of this application observation well is located below the critical infiltration line elevation, and the observation well includes collector pipe, backfill, outer wall reinforcing bar net formation's structure from inside to outside in proper order, the internal diameter of observation well is not less than 0.3m, and the external diameter is not less than 0.6m, and the hole is dark is not less than 8m, and the bottom of collector pipe sets up the drainage layer, still sets up the deep water pump in the collector pipe, and the deep water pump is separated by one section distance setting with the drainage layer, reserves the siltation area as the pump bottom. The large-caliber multifunctional infiltration line observation well can be manually monitored and online monitored, is relatively low in investment, quick in construction, convenient to maintain and comprehensive in function, and is suitable for tailing ponds and solid waste storage yards.
Description
Technical Field
The utility model belongs to the technical field of tailing pond drainage, and particularly relates to a large-caliber deep hole multifunctional infiltration line observation well.
Background
The construction investment of the tailing pond has high proportion in the whole mine construction investment. The safety facilities of the tailing pond mainly comprise an initial dam, a storage dam, a flood drainage system, a seepage drainage system, an observation facility and the like. The factors influencing the stability of the dam include physical and mechanical indexes of a rock-soil layer of the dam, dam building materials and rolling quality of the dam and the height of a wetting line in the dam, wherein the wetting line is the only factor which can be controlled after the dam is built, and is also a key factor influencing the stability of the dam.
In order to prevent the infiltration line from damaging the side slope (dam body), the height of the infiltration line needs to be known in real time, measures for effectively reducing the infiltration line need to be taken, and the height of the infiltration line is controlled within a reasonable range. At present, the method for knowing the height of the infiltration line is to arrange an observation well of the infiltration line, the method for reducing the infiltration line is to arrange an infiltration discharging facility, and the infiltration discharging engineering measures commonly adopted in the stability control of the side slope (dam body) at present comprise a horizontal infiltration discharging pipe, a radiation well and the like.
The tailing pond seepage-discharging and seepage-reducing infiltration line device with the publication number of CN213682394U comprises: the device comprises a seepage line observation hole, a drainage ditch, a siphon water guide pipe, a seepage line monitoring device and a remote monitoring platform; one end of the siphon water guide pipe is inserted into the immersion line observation hole, the other end of the siphon water guide pipe downwards extends into the adjacent drainage ditch along the slope surface of the accumulation dam slope body, and one end of the siphon water guide pipe positioned in the drainage ditch is lower than one end of the immersion line observation hole. The siphon water guide pipe is arranged in the observation hole of the immersion line, and the maximum water absorption depth of the siphon water guide pipe is not more than 10m and can be generally only 6-8m. Because the aperture of the traditional immersion line observation hole is generally not large, and slurry is adopted for wall protection construction, the seepage amount is small, and the difficulty of realizing continuous drainage is very large.
For another example, the publication number is CN110617798A, a structure and distribution of a monitoring pipe for a tailing dam infiltration line are provided, a water filtering section is arranged at the lower half part of the monitoring pipe, the green water section reaches the bottom of the monitoring pipe, the outer circumference of the monitoring pipe is coated with coarse sand backfill, and the outer circumference of the monitoring pipe is coated with non-woven fabrics. The diameter of the monitoring tube of the utility model is 75mm, and the embedding depth is 10-15m. The pipe diameter of the monitoring pipe is smaller, the manual monitoring and the on-line monitoring functions cannot be realized at the same time, and the automatic seepage drainage function in the infiltration line hole cannot be realized.
Or the multifunctional seepage line monitoring device of the tailing pond with the publication number of CN215812260U can obtain monitoring data of manual and on-line monitoring systems at the same time, well guide safety production such as the construction of the tailing pond, but the height of the barrel of the utility model is only 3m, and the observation requirement of few seepage lines of the tailing pond can be met. Most of the tailing ponds have the infiltration line burial depth exceeding 3m, so that the infiltration line burial depth cannot be popularized in the tailing ponds.
Disclosure of Invention
The utility model solves the technical problems by providing the large-caliber deep hole multifunctional immersion line observation well.
In order to achieve the above object, the technical solution of the present utility model is:
the utility model provides a multi-functional infiltration line observation well of heavy-calibre deep hole, the bottom of observation well is located below critical infiltration line elevation, and the observation well includes collector pipe, backfill, the structure that outer wall reinforcing bar net formed in proper order from inside to outside, the internal diameter of observation well is not less than 0.3m, and the external diameter is not less than 0.6m, and the hole is dark not less than 8m, and the bottom of collector pipe sets up the drainage layer, still sets up the deep water pump in the collector pipe, and deep water pump and drainage layer are separated by a section distance setting, reserve the siltation area as the pump bottom.
Preferably, a liquid level control valve is arranged on one side in the water collecting pipe, and the control module starts the deepwater pump to pump the permeate water as long as the water pressure of the liquid level control valve is larger than zero at the critical infiltration line position.
Preferably, the water collecting pipe is composed of a geotextile wrapped by a perforated pipe (PVC pipe drilling, a grooved pipe, a plastic blind ditch pipe), and the geotextile is 100g/m 2 -400 g/m 2 Is a specification of (2).
Preferably, the water filtering layer adopts a geotextile sand bag, and the thickness is not less than 0.5m.
Preferably, quincuncial drilling holes are formed in the pipe wall of the water collecting pipe, the hole diameter is 5mm to 20mm, the hole spacing is not smaller than 40mm, and the row spacing is not smaller than 80mm.
Preferably, coarse sand and sand gravel are adopted as the backfill, the grain size range is between 0.5mm and 20mm, and the rock saturation compressive strength of the backfill is not lower than 30Mpa.
Preferably, the outer wall reinforcing mesh is made of geotextile wrapped reinforcing mesh, and the geotextile adopts 100g/m 2 Is a specification of (2).
Preferably, an osmometer is arranged at the critical infiltration line position of the inner wall of the water collecting pipe.
Preferably, the observation well is further provided with an alarm, the alarm is in signal transmission connection with the liquid level control valve control module, and an alarm is given when the water level line exceeds a set critical infiltration line.
Preferably, an artificial infiltration line observation tube is arranged on the other side of the water collecting tube.
The beneficial effects of the utility model are as follows:
the multifunctional arrangement is carried out in the well, and the backfill is arranged between the water collecting pipe and the outer wall reinforcing steel bar net, so that the water seepage radius is enlarged, and the seepage water quantity of the seepage line observation well is increased. Geotechnical cloth is arranged on the outer wall of the water collecting pipe and the outer wall of the outer wall reinforcing steel bar net, so that the reverse filtering function is realized, and a large amount of tailings are prevented from entering the water collecting pipe. Through setting up heavy-calibre collector pipe, arrange artifical monitor pipe and on-line monitoring equipment simultaneously, realized that artifical monitoring combines together with on-line monitoring. By arranging the geotechnical sand bags at the bottom of the water collecting pipe, the tailings at the bottom are prevented from entering the water collecting pipe, so that clogging is caused. Through setting up the deep water pump in the collector pipe, realized the infiltration line and observed the function of the infiltration line height of arranging and reducing outside the well. The liquid level control valve is arranged in the water collecting pipe, so that the infiltration line is controlled below a certain depth, and the safety coefficient of the tailing pond can be ensured to meet the specification standard. The alarm is arranged outside the immersion line observation well, and the alarm is connected with the liquid level control valve in the water collecting pipe, so that the function of alarming when the water level exceeds the critical immersion line is realized.
The method can realize the drainage precipitation effect which is not achieved by the conventional observation well, breaks through a monitoring mode that the conventional observation well can only be used for manual monitoring and online monitoring, can be used for combining manual monitoring and online monitoring, is mutually verified, and is a large-caliber multifunctional infiltration line observation well which is low in investment, quick in construction, convenient to maintain and comprehensive in function and is suitable for a tailing pond and a solid waste storage yard.
Drawings
FIG. 1 is a longitudinal cross-sectional layout view of an embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of a multi-functional immersion line inspection well;
FIG. 3 is a schematic cross-sectional view of a header;
fig. 4 is a schematic cross-sectional view of an outer wall rebar mesh.
In the figure: 1-dam body outer side slope, 2-accumulation dam upper horse way, 3-accumulated tailings, 4-multifunctional infiltration line observation well, 5-current actual infiltration line, 6-design control infiltration line, 7-artificial infiltration line observation pipe, 8-outer wall reinforcing mesh, 9-backfill, 10-water collecting pipe, 11-liquid level control valve, 12-deep water pump, 13-geotextile sand bag, 14-pump bottom reserved siltation area, 15-multifunctional infiltration line observation well pore-forming, 16-PVC (polyvinyl chloride) flowtube, geotextile wrapped outside 17-water collecting pipe, 18-outer wall reinforcing mesh and geotextile wrapped outside 19-outer wall reinforcing mesh.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
The utility model provides a multi-functional infiltration line observation well of heavy-calibre deep hole, the observation well includes collector pipe, backfill, outer wall reinforcing bar net formation's structure in proper order from inside to outside, the inside diameter of observation well is not less than 0.3m, and the external diameter is not less than 0.6m, and the hole is dark not less than 8m, and the bottom of collector pipe sets up the drainage layer, still sets up the deep water pump in the collector pipe, and deep water pump and drainage layer are separated by a section distance setting, reserve siltation area as the pump bottom.
Preferably, a liquid level control valve is arranged on one side in the water collecting pipe, the liquid level control valve is in signal transmission connection with a control module at the critical infiltration line position, and the control module starts the deepwater pump to pump the permeate water as long as the water pressure of the liquid level control valve is larger than zero.
Preferably, the water collecting pipe is composed of a flower pipe and a geotextile wrapped outside the flower pipe, and the geotextile is in a specification of 100g/m2-400 g/m 2.
Preferably, the water filtering layer adopts a geotextile sand bag, and the thickness is not less than 0.5m.
Preferably, quincuncial drilling holes are formed in the pipe wall of the water collecting pipe, the hole diameter is 5mm to 20mm, the hole spacing is not smaller than 40mm, and the row spacing is not smaller than 80mm.
Preferably, coarse sand and sand gravel are adopted as the backfill, the grain size range is between 0.5mm and 20mm, and the rock saturation compressive strength of the backfill is not lower than 30Mpa.
Preferably, the outer wall reinforcing mesh is made of geotextile wrapped reinforcing mesh, and the geotextile adopts a specification of 100g/m 2.
Preferably, an osmometer is arranged at the critical infiltration line position of the inner wall of the water collecting pipe.
Preferably, an artificial infiltration line observation tube is arranged on the other side of the water collecting tube.
Referring to fig. 1, 2, 3 and 4, the large-diameter immersion line observation well manufactured by adopting the design scheme comprises a dam body outer slope 1, a spillway 2 on a piling dam, a piled tailing 3, a multifunctional immersion line observation well 4, a current actual immersion line 5, a critical immersion line 6, an artificial immersion line observation pipe 7, an outer wall reinforcing steel mesh 8, coarse sand backfill 9, a water collecting pipe 10, a liquid level control valve 11, a deep water pump 12, a geotechnical cloth sand bag 13, a pump bottom reserved siltation area 14, a multifunctional immersion line observation well hole 15, a PVC (polyvinyl chloride) floral tube 16, geotechnical cloth 17 wrapped outside the water collecting pipe, an outer wall reinforcing steel mesh 18 and geotechnical cloth 19 wrapped outside the outer wall reinforcing steel mesh. The multifunctional immersion line observation well 4 is generally installed on the dam pavement 2, construction is convenient, the bottom of the multifunctional immersion line observation well 4 is required to be located below the elevation of the critical immersion line 6, and the depth below the elevation of the critical immersion line 6 depends on the pumping requirement of the deepwater pump 12 and the reserved sedimentation area 14 at the bottom of the pump. The actual immersion line 5 refers to an immersion line in the dam body before the multifunctional immersion line observation well 4 is installed. By a means ofThe critical wetting line 6 is a dam wetting line when the anti-slip stable safety coefficient of the dam can meet the minimum requirement of the regulations. The artificial infiltration line observation pipe 7 needs to be installed after the deep water pump 12 is installed, and is installed on one side of the water collecting pipe 10. The outer wall reinforcing steel bar net 8 consists of transverse annular reinforcing steel bars and longitudinal straight reinforcing steel bars, and can also consist of spiral reinforcing steel bars and longitudinal straight reinforcing steel bars, and the reinforcing steel bar net is used for preventing the hole collapse of the hole 15 of the multifunctional immersion line observation well before the water collecting pipe 10 is lowered from influencing the construction of the water collecting pipe and the coarse sand backfill 9, and the reinforcing steel bar size and the spacing of the outer wall reinforcing steel bar net 8 are determined according to the property of the tailings 3 piled up in a construction area. The header 10 serves to collect permeate water. The liquid level control valve 11 is fixed at one side of the water collecting pipe, the elevation is controlled at the elevation of the critical infiltration line 6, and the liquid level control function is achieved, namely, the deep water pump 12 is started to pump the permeate water as long as the water pressure of the liquid level control valve is larger than zero. The pore size of the multifunctional immersion line observation well pore-forming 15 depends on the operation level of a construction team, and the diameter is generally 0.6m to 1.0m, and can be as large as 1.5m. The model of the geotextile 17 wrapped outside the water collecting pipe is 100g/m 2 To 400g/m 2 The geotechnical cloth 17 wrapped on the outer side of the water collecting pipe plays a role in filtering according to the size of the tailing particles, so that penetrating water can enter the water collecting pipe, and the tailing cannot enter the water collecting pipe. The model of the geotextile 19 wrapped by the outer wall reinforcing mesh is 100g/m 2 The geotechnical cloth 19 wrapped outside the outer wall reinforcing steel bar net plays a role in filtering, so that penetrating water enters coarse sand backfill, and tailings cannot enter, depending on the particle size of the external tailings 2 of the multifunctional immersion line observation well 4.
The observation well of the embodiment is further provided with an alarm, the alarm is in signal transmission connection with the liquid level control valve control module, and an alarm is sent out when the water level line exceeds the critical infiltration line height set by the control module.
The construction process flow of the embodiment is as follows: measuring and positioning- > forming holes of a multifunctional immersion line observation well, wherein special wall protection materials are adopted in the hole forming process to prevent holes from collapsing- > a lower outer wall reinforcing mesh wall protection- > a lower water collecting pipe- > a lower Fang Tugong sand distribution bag- > a lower backfill (coarse sand and sand gravel) - -, installing a deep water pump- > flushing well- > installing a liquid level control valve- > installing a manual observation pipe- > and performing system debugging- > acceptance inspection and use.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (10)
1. The utility model provides a multi-functional infiltration line observation well of heavy-calibre deep hole, its characterized in that, the bottom of observation well is located below critical infiltration line elevation, and the observation well includes collector pipe, backfill, the structure that outer wall reinforcing bar net formed in proper order from inside to outside, the inside diameter of observation well is not less than 0.3m, and the external diameter is not less than 0.6m, and the hole is dark is not less than 8m, and the bottom of collector pipe sets up the drainage layer, still sets up the deep water pump in the collector pipe, and deep water pump and drainage layer are separated by a section distance setting, reserve siltation region as the pump bottom.
2. The multifunctional immersion line observation well for the large-caliber deep hole according to claim 1, wherein a liquid level control valve is arranged on one side in the water collecting pipe and is positioned at a critical immersion line position.
3. The multifunctional immersion line observation well for the large-caliber deep hole according to claim 2, wherein the water collecting pipe is composed of a floral tube Bao Tugong cloth, and the geotextile is 100g/m 2 -400 g/m 2 Is a specification of (2).
4. The multi-functional immersion line observation well of heavy-calibre deep hole of claim 3, wherein the drainage layer adopts geotechnical cloth sand bag, and thickness is not less than 0.5m.
5. The multifunctional immersion line observation well for the large-caliber deep hole according to claim 1, wherein the water collecting pipe wall is provided with quincuncial drilling holes, the aperture is 5mm to 20mm, the hole spacing is not less than 40mm, and the row spacing is not less than 80mm.
6. The multifunctional immersion line observation well for the large-caliber deep hole according to claim 1, wherein coarse sand and sand gravel are adopted as the backfill, the grain size range is between 0.5mm and 20mm, and the rock saturation compressive strength of the backfill is not lower than 30Mpa.
7. The multi-functional immersion line observation well of heavy-calibre deep hole of claim 1, wherein the outer wall reinforcing bar net is made by geotextile outsourcing reinforcing bar net, geotextile adopts 100g/m 2 Is a specification of (2).
8. The multifunctional immersion line observation well for the large-caliber deep hole according to claim 7, wherein an osmometer is arranged at the critical immersion line position of the inner wall of the water collecting pipe.
9. The multi-functional immersion line inspection well of heavy caliber deep hole according to claim 8, wherein the inspection well is further provided with an alarm, and the alarm is in signal transmission connection with a liquid level control valve control module.
10. The multi-functional immersion line inspection well of a deep hole with a large caliber according to claim 9, wherein an artificial immersion line observation tube is arranged at the other side in the inspection well.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320459969.XU CN219298275U (en) | 2023-03-10 | 2023-03-10 | Multi-functional infiltration line observation well of heavy-calibre deep hole |
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| CN202320459969.XU CN219298275U (en) | 2023-03-10 | 2023-03-10 | Multi-functional infiltration line observation well of heavy-calibre deep hole |
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