阅读说明：本技术 尾砂库内可控压差沉井法 (Controllable differential pressure open caisson method in tailing warehouse ) 是由 聂爱潮 翟群杰 朱学光 经闯 李小忠 于 2021-09-01 设计创作，主要内容包括：尾砂库内可控压差沉井法,包括设置在尾砂中的辐射井井筒,所述尾砂中辐射井井筒的内底部设置有加压平台,所述加压平台上连接有内筒,还包括步骤S1-步骤S6。本发明采用尾砂库内可控压差沉井法,可克服传统沉井方法的不足,由于尾砂库的尾砂是靠长期堆积而成的,导致尾砂存在部分固结成层的情况,在尾砂库内沉井一旦遇到浮力和井周摩擦力、固结带来的阻力大于井筒自重,沉井下沉很困难,这时我们就要借助外力推动井筒下沉；尾砂库内可控压差沉井法就可根据沉井遇到的实际情况调整水位,靠水的压力和井筒自重推动井筒加快下沉,可通过调控水位控制井的下沉速度。此方法应用简单,操作方便,成本较低、可加快施工进度。(The controllable differential pressure open caisson method in the tailing warehouse comprises a radiation well shaft arranged in the tailing, wherein a pressurizing platform is arranged at the inner bottom of the radiation well shaft in the tailing, and the pressurizing platform is connected with an inner cylinder, and the controllable differential pressure open caisson method further comprises the steps of S1-S6. The invention adopts a controllable differential pressure open caisson method in a tailing pond, can overcome the defects of the traditional open caisson method, because the tailing of the tailing pond is formed by long-term accumulation, partial consolidation and layering of the tailing exist, once the open caisson in the tailing pond meets buoyancy, well circumferential friction and resistance brought by consolidation is larger than the dead weight of a shaft, the open caisson is difficult to sink, and at the moment, the shaft is pushed to sink by external force; the controllable differential pressure open caisson method in the tailing pond can adjust the water level according to the actual conditions encountered by the open caisson, the shaft is pushed by the pressure of water and the dead weight of the shaft to accelerate the sinking, and the sinking speed of the shaft can be controlled by adjusting and controlling the water level. The method is simple to apply, convenient to operate, low in cost and capable of accelerating construction progress.)

1. The controllable differential pressure open caisson method in the tailing warehouse is characterized in that: the device comprises a radiation well shaft arranged in tailings, wherein a pressurizing platform (3) is arranged at the inner bottom of the radiation well shaft in the tailings, an inner cylinder (5) is connected onto the pressurizing platform (3), a sewage pump (4) is arranged below the pressurizing platform (3), a water pumping pipe of the sewage pump (4) penetrates through the inner cylinder (5), a simple cover (2) is arranged on the upper surface of the pressurizing platform (3), a steel wire rope (1) is connected onto the simple cover (2), and the steel wire rope (1) extends to the outside of the radiation well shaft;

also comprises the following steps:

step S1, firstly, arranging a radiation well in the tailings pond as a lower open caisson so that the height of a well shaft of the radiation well is higher than that of tailings in the tailings pond;

step S2, arranging a pressurizing platform (3) at the bottom of a shaft of the radiation well, arranging an inner cylinder (5) at the upper part of the pressurizing platform (3), and dividing the radiation well into two closed spaces by using the pressurizing platform (3) and the inner cylinder (5);

step S3, arranging a sewage pump (4) below the pressurizing platform (3), arranging a simple cover (2) on the upper part of the pressurizing platform (3), connecting a steel wire rope (1) on the simple cover (2), and controlling the internal and external water levels of the two closed spaces by using the simple cover (2) on the pressurizing platform (3) and the sewage pump (4);

step S4, controlling the internal and external water levels of the two closed spaces by the simple cover (2) and the sewage pump (4), continuously pumping the sewage below the pressurizing platform (3) to the position above the pressurizing platform (3) by the sewage pump (4), increasing the pressure above the pressurizing platform (3), increasing the self weight of the radiation shaft, and slowly sinking the radiation well;

step S5, the simple cover (2) can be opened and closed, so that the circulation of sewage on the pressurizing platform (3) is controlled, after the simple cover (2) is opened and the sewage pump (4) is closed, the sewage flows from the upper part of the pressurizing platform (3) to the lower part of the pressurizing platform (3) through the simple cover (2), and the radiation well is slowed down until the sinking is stopped;

and step S6, controlling the sinking speed of the open caisson by continuously adjusting the water level according to the field situation.

2. The controllable differential pressure open caisson method in a tailings pond of claim 1, wherein: the pressurizing platform (3) is provided with two groups of water through openings, and the simple cover (2) is hinged above the pressurizing platform (3) and covers the upper part of the water through openings.

3. The controllable differential pressure open caisson method in a tailings pond of claim 2, wherein: the simple cover (2) is provided with a steel wire rope fixing ring, and the steel wire rope (1) is fixedly connected above the simple cover (2) through the steel wire rope fixing ring.

4. The controllable differential pressure open caisson method in a tailings pond of claim 3, wherein: the steel wire rope (1) is a carbon steel wire rope.

5. The controllable differential pressure open caisson method in a tailings pond of claim 2, wherein: be provided with the mouth that draws water on pressurization platform (3), the bottom of inner tube (5) is through drawing water mouthful intercommunication in pressurization platform (3), the mouth that draws water is located the intermediate position of pressurization platform (3), and two sets of limbers set up respectively in the both sides of drawing water mouthful.

6. The controllable differential pressure open caisson method in a tailings pond of claim 5, wherein: the bottom of the pumping port of the pressurizing platform (3) and the bottom of the inner barrel (5) are both provided with flange joints, and the pumping port of the pressurizing platform (3) is communicated with the inner barrel (5) in a sealing mode through the flange joints.

7. The controllable differential pressure open caisson method in a tailings pond of claim 1, wherein: the height of the inner cylinder (5) is lower than that of the shaft of the radiation well, sewage flows to the upper part of the pressurizing platform (3) from the lower part of the pressurizing platform (3) in the process of pumping water by the sewage pump (4), and the liquid level of the sewage above the pressurizing platform (3) is lower than that of the inner cylinder (5).

8. The controllable differential pressure open caisson method in a tailings pond of claim 1, wherein: the sewage pump (4) is arranged on the water pumping pipe, the lower end of the water pumping pipe is located below the pressurizing platform (3), and the upper end of the water pumping pipe is located above the pressurizing platform (3).

Technical Field

The invention belongs to the technical field of controllable differential pressure open caisson of a tailing pond, and particularly relates to a controllable differential pressure open caisson method in the tailing pond.

Background

The tail sand warehouse is generally formed by piling slag discarded after mineral separation of mine enterprises, the tail sand stratum of the tail sand warehouse is formed by long-term piling, a hard stratum is formed by long-term piling and consolidation, the open caisson is an underground structure constructed by an open caisson method and a deep foundation, a well-cylindrical structure (open caisson) is firstly manufactured on the ground surface, then soil is continuously excavated from the well under the enclosure of a well wall, the open caisson is subjected to silt and sandy soil strata, sand is pumped by a sewage pump, the open caisson gradually sinks under the action of self weight, and after a preset design elevation is reached, bottom sealing is carried out, and an internal structure is constructed; the tailings in the tailings reservoir are consolidated to form a hard stratum, and the open caisson is difficult to normally sink by the traditional open caisson method alone, so that the controllable differential pressure open caisson method in the tailings reservoir is provided to solve the problems in the prior art.

Disclosure of Invention

The invention aims to provide a controllable differential pressure open caisson method in a tailing pond, which can overcome the defects of the traditional open caisson method by adopting the controllable differential pressure open caisson method in the tailing pond, because the tailing of the tailing pond is formed by long-term accumulation, partial consolidation of the tailing is layered, once the open caisson in the tailing pond meets buoyancy, well circumference friction and resistance brought by consolidation is larger than the dead weight of a shaft, the open caisson is difficult to sink, and at the moment, the shaft is pushed to sink by external force; the controllable differential pressure open caisson method in the tailing pond can adjust the water level according to the actual conditions encountered by the open caisson, the shaft is pushed by the pressure of water and the dead weight of the shaft to accelerate the sinking, and the sinking speed of the shaft can be controlled by adjusting and controlling the water level. The method is simple to apply, convenient to operate, low in cost and capable of accelerating the construction progress so as to solve the problems in the prior art in the background technology.

In order to achieve the purpose, the invention adopts the following technical scheme: the controllable differential pressure well sinking method in the tailing warehouse comprises a radiation well shaft arranged in tailing, wherein a pressurizing platform is arranged at the inner bottom of the radiation well shaft in the tailing, an inner cylinder is connected onto the pressurizing platform, a sewage pump is arranged below the pressurizing platform, a water pumping pipe of the sewage pump penetrates through the inner cylinder, a simple cover is arranged on the upper surface of the pressurizing platform, a steel wire rope is connected onto the simple cover, and the steel wire rope extends to the outside of the radiation well shaft;

also comprises the following steps:

step S1, firstly, arranging a radiation well in the tailings pond as a lower open caisson so that the height of a well shaft of the radiation well is higher than that of tailings in the tailings pond;

step S2, a pressurizing platform is arranged at the bottom of the shaft of the radiation well, an inner cylinder is arranged at the upper part of the pressurizing platform, and the pressurizing platform and the inner cylinder are used for dividing the radiation well into two closed spaces;

step S3, arranging a sewage pump below the pressurizing platform, arranging a simple cover on the upper part of the pressurizing platform, connecting a steel wire rope on the simple cover, and controlling the internal and external water levels of the two closed spaces by using the simple cover and the sewage pump on the pressurizing platform;

step S4, controlling the internal and external water levels of the two closed spaces by the simple cover and the sewage pump, and after the sewage pump continuously pumps the sewage below the pressurizing platform above the pressurizing platform, increasing the pressure above the pressurizing platform, increasing the dead weight of the radiation shaft and slowly sinking the radiation well;

step S5, the simple cover can be opened and closed, so that the sewage circulation on the pressurizing platform is controlled, after the simple cover is opened and the sewage pump is closed, the sewage flows from the upper part of the pressurizing platform to the lower part of the pressurizing platform through the simple cover, and the radiation well is slowed down until the sewage stops sinking;

and step S6, controlling the sinking speed of the open caisson by continuously adjusting the water level according to the field situation.

Preferably, the pressurizing platform is provided with two groups of water through openings, and the simple cover is hinged above the pressurizing platform and covers the upper parts of the water through openings.

Preferably, a steel wire rope fixing ring is arranged on the simple cover, and the steel wire rope is fixedly connected above the simple cover through the steel wire rope fixing ring.

Preferably, the steel wire rope is a carbon steel wire rope.

Preferably, be provided with the mouth that draws water on the pressurization platform, the bottom of inner tube is through drawing water mouthful intercommunication in the pressurization platform, draw water mouthful the intermediate position that is located the pressurization platform, two sets of logical mouths of water set up respectively in the both sides of drawing water mouthful.

Preferably, the pumping port of the pressurizing platform and the bottom of the inner cylinder are both provided with flange joints, and the pumping port of the pressurizing platform and the inner cylinder are communicated in a sealing mode through the flange joints.

Preferably, the height of the inner cylinder is lower than that of the well shaft of the radiant well, sewage flows to the upper part of the pressurizing platform from the lower part of the pressurizing platform in the process of pumping water by the sewage pump, and the water level of the sewage above the pressurizing platform is lower than that of the inner cylinder.

Preferably, the sewage pump sets up on the drinking-water pipe, the lower extreme of drinking-water pipe is located the below of pressurization platform, the upper end of drinking-water pipe is located the top of pressurization platform.

The invention has the technical effects and advantages that: compared with the prior art, the controllable differential pressure open caisson method in the tailing pond has the following advantages that:

the invention adopts a controllable differential pressure open caisson method in a tailing pond, can overcome the defects of the traditional open caisson method, because the tailing of the tailing pond is formed by long-term accumulation, partial consolidation and layering of the tailing exist, once the open caisson in the tailing pond meets buoyancy, well circumferential friction and resistance brought by consolidation is larger than the dead weight of a shaft, the open caisson is difficult to sink, and at the moment, the shaft is pushed to sink by external force; the controllable differential pressure open caisson method in the tailing pond can adjust the water level according to the actual conditions encountered by the open caisson, the shaft is pushed by the pressure of water and the dead weight of the shaft to accelerate the sinking, and the sinking speed of the shaft can be controlled by adjusting and controlling the water level. The method is simple to apply, convenient to operate, low in cost and capable of accelerating construction progress.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

FIG. 1 is a schematic diagram of a radiant well bore configuration according to an embodiment of the present invention;

FIG. 2 is a flow chart of a method for controlled differential pressure open caisson within a tailings reservoir in an embodiment of the invention.

In the figure: 1. a wire rope; 2. a simple cover; 3. a pressurizing platform; 4. a sewage pump; 5. an inner cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described examples are only a part of the examples of the present invention, and not all examples. The specific examples described herein are intended to be illustrative only and are not intended to be limiting. Based on the examples in the present invention, those skilled in the art can use the technology without creative efforts, and all of them are within the protection scope of the present invention.

The present invention provides embodiments as shown in fig. 1-2:

the controllable differential pressure open caisson method in the tailing warehouse comprises a radiation well shaft arranged in tailing, wherein a pressurizing platform 3 is arranged at the inner bottom of the radiation well shaft in the tailing, an inner cylinder 5 is connected to the pressurizing platform 3, a sewage pump 4 is arranged below the pressurizing platform 3, a water pumping pipe of the sewage pump 4 penetrates through the inner cylinder 5, a simple cover 2 is arranged on the upper surface of the pressurizing platform 3, a steel wire rope 1 is connected to the simple cover 2, and the steel wire rope 1 extends to the outside of the radiation well shaft;

also comprises the following steps:

step S1, firstly, arranging a radiation well in the tailings pond as a lower open caisson so that the height of a well shaft of the radiation well is higher than that of tailings in the tailings pond;

step S2, arranging a pressurizing platform 3 at the bottom of a shaft of the radiation well, arranging an inner cylinder 5 at the upper part of the pressurizing platform 3, and dividing the radiation well into two closed spaces by utilizing the pressurizing platform 3 and the inner cylinder 5;

step S3, arranging a sewage pump 4 below the pressurizing platform 3, arranging a simple cover 2 on the upper part of the pressurizing platform 3, connecting a steel wire rope 1 on the simple cover 2, and controlling the internal and external water levels of the two closed spaces by using the simple cover 2 and the sewage pump 4 on the pressurizing platform 3;

step S4, controlling the internal and external water levels of the two closed spaces by the simple cover 2 and the sewage pump 4, continuously pumping the sewage below the pressurizing platform 3 to the position above the pressurizing platform 3 by the sewage pump 4, increasing the pressure above the pressurizing platform 3, increasing the dead weight of the radiation shaft, and slowly sinking the radiation well;

step S5, the simple cover 2 can be opened and closed, so that the sewage on the pressurizing platform 3 can be controlled to circulate, after the simple cover 2 is opened and the sewage pump 4 is closed, the sewage flows from the upper part of the pressurizing platform 3 to the lower part of the pressurizing platform 3 through the simple cover 2, and the radiation well is slowed down until the sinking is stopped;

and step S6, controlling the sinking speed of the open caisson by continuously adjusting the water level according to the field situation.

The pressurizing platform 3 is provided with two groups of water through openings, and the simple cover 2 is hinged above the pressurizing platform 3 and covers the water through openings; the simple cover 2 is provided with a steel wire rope fixing ring, and the steel wire rope 1 is fixedly connected above the simple cover 2 through the steel wire rope fixing ring.

The steel wire rope 1 is a carbon steel wire rope, the steel wire rope is composed of steel wires, a rope core and lubricating grease, the steel wire rope is a spiral rope formed by twisting a plurality of layers of steel wires into strands, the rope core is used as the center, and the carbon steel wire rope has stable performance in the process of sinking a well under the controllable pressure difference.

A water pumping port is formed in the pressurizing platform 3, the bottom of the inner barrel 5 is communicated with the pressurizing platform 3 through the water pumping port, the water pumping port is located in the middle of the pressurizing platform 3, and two groups of water passing ports are respectively formed in two sides of the water pumping port; the bottom of the mouth that draws water and inner tube 5 of pressurization platform 3 all is provided with flange joint, sealed intercommunication is carried out through flange joint between the mouth that draws water of pressurization platform 3 and the inner tube 5.

The height of the inner cylinder 5 is lower than that of a shaft of the radiation well, sewage flows to the upper part of the pressurizing platform 3 from the lower part of the pressurizing platform 3 in the process of pumping water by the sewage pump 4, and the water level of the sewage above the pressurizing platform 3 is lower than that of the inner cylinder 5; the sewage pump 4 is arranged on the water pumping pipe, the lower end of the water pumping pipe is positioned below the pressurizing platform 3, and the upper end of the water pumping pipe is positioned above the pressurizing platform 3.

The invention adopts a controllable differential pressure open caisson method in a tailing pond, can overcome the defects of the traditional open caisson method, because the tailing of the tailing pond is formed by long-term accumulation, partial consolidation and layering of the tailing exist, once the open caisson in the tailing pond meets buoyancy, well circumferential friction and resistance brought by consolidation is larger than the dead weight of a shaft, the open caisson is difficult to sink, and at the moment, the shaft is pushed to sink by external force; the controllable differential pressure open caisson method in the tailing pond can adjust the water level according to the actual conditions encountered by the open caisson, the shaft is pushed by the pressure of water and the dead weight of the shaft to accelerate the sinking, and the sinking speed of the shaft can be controlled by adjusting and controlling the water level. The method is simple to apply, convenient to operate, low in cost and capable of accelerating construction progress.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.