CN102619198A - Sub-dam construction method of tailing dam and prefabricated member for method - Google Patents
Sub-dam construction method of tailing dam and prefabricated member for method Download PDFInfo
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- CN102619198A CN102619198A CN2012101341451A CN201210134145A CN102619198A CN 102619198 A CN102619198 A CN 102619198A CN 2012101341451 A CN2012101341451 A CN 2012101341451A CN 201210134145 A CN201210134145 A CN 201210134145A CN 102619198 A CN102619198 A CN 102619198A
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Abstract
The invention relates to a sub-dam construction method of a tailing dam and a prefabricated member. The method comprises the following steps of: manufacturing the prefabricated members; paying off, positioning, and positioning the prefabricated members on a sedimentary area according to the design dam slope of the tailing dam and the height and the slope of a sub-dam; selecting the position of an initial point of the prefabricated members, placing the prefabricated members, and selecting the position of a starting point of the prefabricated members according to the field ore drawing situation, wherein the position of the starting point is the middle position at the top of the dam or the two ends at the top of the dam; and the placement of the prefabricated members is as follows: according to the position of the initial point of the prefabricated members, the prefabricated members are arranged one by one from the middle of the dam to the two ends of a dam body or the prefabricated members are placed one by one from one end of the dam body to the other end of the dam body, and the interfaces are in great mutual linkage. The cross section of each prefabricated member is of the shape of inverted T, a lower part of each prefabricated member is of a base, a slag blocking wall is vertically arranged on each base, and a convex tenon and a concave tenon are respectively arranged on the left side and the right side of each prefabricated member. The sub-dam construction method disclosed by the invention has the following advantages: the constructed sub-dam is stable, safe, simple, convenient and fast.
Description
Technical field
The present invention relates to a kind of method and prefabricated units of constructing tailing dam, particularly a kind of sub-dam construction method of tailing dam and be used for the prefabricated units of this method.
Background technology
Formula is piled up the primary structure analysis of tailing dam from the upper reaches, and tailing dam mainly is made up of basic dam, sub-dam and mine tailing fill dam, in three main ingredients.Wherein, sub-dam and mine tailing fill dam are to be in along with increasing of mine tailing in the dynamic uphill process, and these two parts are influential to the enforcement of upper reaches formula rapid accumulation high dam, not only have influence on the rate of climb, and influence the stability and the safety of tailing dam.
The heap building method on present sub-dam has manual work to build a dam and machinery is built a dam two kinds.Manual work is built sub-dam and is deposited in the storehouse through manual type exactly and take tailings pile the beach and build sub-dam, and its advantage is: applicability is strong, can be used for all mine tailing storehouses, is not very high to the requirement for bearing capacity of deposition beach face, and a very important person can step down in top operation and just can implement; Its shortcoming is: field worker labour intensity is big, and operating efficiency is lower, and, the build a dam rate of climb fast tailing dam long to the axis of dam is not suitable for.
Machinery is built sub-dam and is utilized engineering machinery (excavator, loader or bulldozer etc.) in the storehouse, to deposit exactly to take the beach and take native stone body heap outside mine tailing or the reservoir area and build sub-dam.Its advantage is: speed is fast, and efficient is high, and cost is low, and machinery has certain compaction to dam body; Its shortcoming is: applicability is poor, directly in the storehouse, takes mine tailing for fine tailings, axis of dam weak point and the little inapplicable machinery in small-sized mine tailing storehouse of deposition beach length and builds sub-dam.In addition, operating condition requires relatively harsher, not only require the deposition beach face that enough bearing capacities are arranged, and the reservoir area landform is relatively mild, so that plant equipment can free in and out the mine tailing storehouse.
Want to realize the fast rise of tailing dam, it can be met the needs of production, the quick heap that at first will solve sub-dam is built problem.The heap damming method on the sub-dam of present existing rapid accumulation has template control shaping natural drainage of tailings to pile up sub-dam method.It is to squeeze into row's timber on dam, dam facing upper edge, on one side this timber on the plank or the iron plate of laying waterproofing work towards the mine tailing storehouse, stopping the mortar of mine tailing, the another side of timber supports with oblique wood, to add the sub-dam of fixed building.Use the auxiliary material and the industrial analysis of piling up sub-dam can know that this method can only be the fast contradiction of the sub-dam of the respite rate of climb, can not use for a long time from this method.
Summary of the invention
Technical problem to be solved by this invention just provides a kind of sub-dam construction method of that can construct fast and tailing dam stability and safety.
Technical problem to be solved by this invention is to realize that through such technical scheme it may further comprise the steps:
Step 3, the initial point position of selected prefabricated units and arrangement prefabricated units, according to on-the-spot ore drawing situation, the start position of selected prefabricated units, said start position is dam crest centre position or dam crest two ends; Said arrangement prefabricated units are to discharge toward the dam body two ends alone or discharged by the past other end of an end of dam body in the middle of the dam according to the initial point position of prefabricated units, settle prefabricated units one by one, and interface is connected each other.
Preferably, this method also comprises the step of settling assistance platform, in this step, on the prefabricated units top assistance platform is set, and on assistance platform, settles the ore drawing facility.
In order to implement this method, the present invention also provides a kind of prefabricated units that are used for this method, the T font of its section for standing upside down, and the bottom is a base, erects on the base and is provided with the pushing off the slag wall, its right and left is respectively equipped with convex tenon and spill tenon.
Owing to adopted the prefabricated units that can overlap to make up sub-dam, can realize the construction on the sub-dam of completion fast, satisfy the mine tailing that rolls up and pile up demand; Through the location and the overlap joint on sub-dam, and, can build a kind of mine tailing embankment dam of stability and safety according to the stability analysis of prefabricated units.The present invention has following advantage: not only stability and safety, but also the sub-dam of easy quick structure.
Description of drawings
Description of drawings of the present invention is following:
Fig. 1 is the operation indicator diagram of step 2 in this method invention;
Fig. 2 is a kind of prefabricated units overlap joint sketch map in the step 3 in this method invention;
Fig. 3 is for increasing the sketch map of the step of settling assistance platform in this method invention;
Fig. 4 is the front view of first kind of prefabricated unit of the present invention;
Fig. 5 is the left view of first kind of prefabricated unit of the present invention;
Fig. 6 is the vertical view of first kind of prefabricated unit of the present invention;
Fig. 7 is second kind of prefabricated units structural representation of the present invention;
Fig. 8 is the force analysis figure of the prefabricated units of this method invention;
Fig. 9 is the mine tailing lateral earth pressure distribution map of prefabricated units among Fig. 8.
Among the figure: 1. basic dam; 2. the first straton dam; 3. the second straton dam; 4. prefabricated units; 41. base; 42. pushing off the slag wall; 43. spilled water hole; 44. convex tenon; 45. spill tenon; 46. reinforcing rib; 5. tenon seam; 6. sub-dam; 7. assistance platform; 8. ore drawing is responsible for; 9. ore drawing arm; 10. deposition beach.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
The sub-dam construction method of tailing dam of the present invention may further comprise the steps:
Step 3, the initial point position of selected prefabricated units and arrangement prefabricated units, according to on-the-spot ore drawing situation, the start position of selected prefabricated units, said start position is dam crest centre position or dam crest two ends; Said arrangement prefabricated units are to discharge toward the dam body two ends alone or discharged by the past other end of an end of dam body in the middle of the dam according to the initial point position of prefabricated units, settle prefabricated units one by one, and interface is connected each other.
Fig. 1 is the operation indicator diagram of above-mentioned steps 2; On basic dam 1, construct the first straton dam 2; On the first straton dam 2, construct the second straton dam 3, the gradient of establishing 1 outside, basic dam is 1:2, and sub-height of dam degree is 2 meters; Then each straton dam location gradient of press 1:4 on the beach in deposition is definite, can keep sub-dam to have good stable property like this.
Fig. 2 is a kind of prefabricated units overlap joint sketch map in the above-mentioned steps 3, is provided with convex tenon 44 at prefabricated units 4 one ends, and the other end is provided with 45, two blocks of prefabricated units 4 of spill tenon and overlaps, and forms an integral body to guarantee member, improves the stability on sub-dam.Between per two blocks of prefabricated units 4 tenon seam 5 is arranged.
Fig. 3 is the sketch map that in said method, increases the step of settling assistance platform, settles assistance platform 7 on the top on sub-dam 6, on assistance platform 7, settles the ore drawing person in charge 8 and ore drawing arm 9 facilities such as ore drawing such as grade.
After settle accomplishing, just can ore drawing, when waiting to deposit 10 on beach and arriving the top on sub-dams 6, stop ore drawing, the step above repeating is carried out constructing of next individual sub-dam.
A kind of prefabricated units such as Fig. 4, Fig. 5, shown in Figure 6 of being used for this method; The T font of its section for standing upside down; The bottom is a base 41, and base 41 is provided with the pushing off the slag wall 42 of setting, for the ease of the overlap joint between the prefabricated units 4; One side of prefabricated units 4 is provided with convex tenon 44, and another side is provided with spill tenon 45.Offer spilled water hole 43 on this pushing off the slag wall 42, be convenient to get rid of the ponding in the slag storehouse.
As shown in Figure 7, second kind of prefabricated unit of the present invention are provided with reinforcing rib 46 between pushing off the slag wall 42 1 sides and base 41.
Prefabricated units 4 stability analysis such as Fig. 8 and shown in Figure 9, prefabricated units 4 are stressed to be had: the lateral earth pressure P of deposition beach mine tailing, the self gravitation W of member, the support force N of substrate and frictional force F.
Can draw mine tailing according to the Rankine earth pressure theory and act on that the side direction soil pressure is on the member:
(1) formula integration is obtained the gross pressure that acts on the prefabricated units is:
（2）
In formula (1) and (2),
p
A-The pressure that-lateral earth pressure produces;
The z-height coordinate;
Gross pressure on the P-prefabricated units;
The unit weight of
-mine tailing;
The angle of internal friction of
-mine tailing;
The adhesion stress of
-mine tailing;
The height of
-prefabricated units (height on phase group dam).
Like this, can obtain the coefficient of stability
:
In the formula, bottom friction
is:
Wherein,
-bottom-friction factor;
Like this,
（4）
Utilize formula (4), can obtain the antiskid coefficient of stability of prefabricated units.Through the coefficient of stability, can judge whether it is stable.
Through above-mentioned multiple means, comprise 5 location, sub-dam, the overlap joint of prefabricated units 4 and the stability Design of prefabricated units 4, can guarantee the stability and safety on mine tailing embankment dam.
Claims (5)
1. the sub-dam construction method of a tailing dam is characterized in that, may further comprise the steps:
Step 1 is made prefabricated units;
Step 2, according to the design dam slope degree of tailing dam, sub-height of dam degree and the gradient, locate prefabricated units on the deposition beach unwrapping wire location;
Step 3, the initial point position of selected prefabricated units and arrangement prefabricated units, according to on-the-spot ore drawing situation, the start position of selected prefabricated units, said start position is dam crest centre position or dam crest two ends; Said arrangement prefabricated units are to discharge toward the dam body two ends alone or discharged by the past other end of an end of dam body in the middle of the dam according to the initial point position of prefabricated units, settle prefabricated units one by one, and interface is connected each other.
2. the sub-dam construction method of tailing dam according to claim 1 is characterized in that, also comprises the step of settling assistance platform, in this step, on the prefabricated units top assistance platform is set, and on assistance platform, settles the ore drawing facility.
3. prefabricated units that are used for the sub-dam construction method of the said tailing dam of claim 1; It is characterized in that; The T font of its section for standing upside down; The bottom is base (41), and base (41) is gone up to erect and is provided with pushing off the slag wall (42), and its right and left is respectively equipped with convex tenon (44) and spill tenon (45).
4. prefabricated units according to claim 3 is characterized in that, offer spilled water hole (43) on the said pushing off the slag wall (42).
5. prefabricated units according to claim 4 is characterized in that, between pushing off the slag wall (42) one sides and base (41), are provided with reinforcing rib (46).
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| CN2012101341451A CN102619198A (en) | 2012-05-03 | 2012-05-03 | Sub-dam construction method of tailing dam and prefabricated member for method |
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| CN2012101341451A CN102619198A (en) | 2012-05-03 | 2012-05-03 | Sub-dam construction method of tailing dam and prefabricated member for method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015437A (en) * | 2012-12-12 | 2013-04-03 | 瓮福（集团）有限责任公司 | Method for piling up auxiliary dam of tailings pond |
| CN103628488A (en) * | 2013-12-18 | 2014-03-12 | 云南农业大学 | Damming method of tailing subdam |
| CN104264690A (en) * | 2014-09-01 | 2015-01-07 | 湖南辰州矿业股份有限公司 | Method for increasing volume of tailings pond for mine enterprise |
| CN104776828A (en) * | 2015-03-19 | 2015-07-15 | 中钢集团马鞍山矿山研究院有限公司 | Beach face gradient inclination observation system and application method thereof after closing of tailing warehouse |
| CN112030888A (en) * | 2020-09-03 | 2020-12-04 | 铜源国际工程设计研究有限公司 | Fine particle tailing upstream type high-strength reinforced wide-top damming method and structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015437A (en) * | 2012-12-12 | 2013-04-03 | 瓮福（集团）有限责任公司 | Method for piling up auxiliary dam of tailings pond |
| CN103628488A (en) * | 2013-12-18 | 2014-03-12 | 云南农业大学 | Damming method of tailing subdam |
| CN103628488B (en) * | 2013-12-18 | 2016-01-06 | 云南农业大学 | A kind of damming method of mine tailing embankment dam |
| CN104264690A (en) * | 2014-09-01 | 2015-01-07 | 湖南辰州矿业股份有限公司 | Method for increasing volume of tailings pond for mine enterprise |
| CN104776828A (en) * | 2015-03-19 | 2015-07-15 | 中钢集团马鞍山矿山研究院有限公司 | Beach face gradient inclination observation system and application method thereof after closing of tailing warehouse |
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| CN112030888A (en) * | 2020-09-03 | 2020-12-04 | 铜源国际工程设计研究有限公司 | Fine particle tailing upstream type high-strength reinforced wide-top damming method and structure |
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Application publication date: 20120801 |