Testing system and method for measuring loss of particles in water inrush process in real time

Patent metadata

Field	Value
Publication number	US-2020116610-A1
Application number	US-201716344319-A
Country	US
Kind code	A1
Filing date	Jul 6, 2017
Priority date	Jun 14, 2017
Publication date	Apr 16, 2020
Grant date	—

Abstract

A testing system for measuring loss of soil particles with different particle sizes in a water inrush process includes: a vibration screening apparatus; a water collecting apparatus for collecting the mass of water and transmitting the water to a collecting and calculating apparatus; a conveying apparatus for conveying screened soil particles to a weighing apparatus; a weighing apparatus used for weighing the screened soil particles and transmitting the measured weight of the screened soil particles to the collecting and calculating apparatus; and a collecting and calculating apparatus used for controlling the operation of the testing system, inputting parameters and calculating data. The condition of particle loss in a simulated tunnel water inrush process can be automatically measured in real time, providing a basis for researching the influence caused by the particle sizes of fillings in the water inrush process of the tunnel to water inrush.

First claim

1 - 10 . (canceled)

11 . A testing system for measuring the loss of particles in a water inrush process in real time comprising:
a vibratory screening device configured to screen soil particles lost in the water inrush process; a water collecting device configured to collect the water flowing out in the water inrush process, measure the mass of water and transmit the measured mass of water to the collecting and computing device; a conveying device configured to convey the screened soil particles to the weighing device; a weighing device configured to measure the weight of the screened soil particles and transmit the measured weight of the soil particles to the collecting and computing device; and a collecting and computing device configured to control the operation of the testing system, parameters are inputted into the collecting and computing device, and then the collecting and computing device calculates a general law of distribution of particles in different particle sizes, proportions of loss of particles in different diameters and amount of water loss in each time interval according to the inputted parameters, received mass of water and weight of soil particles; wherein: the vibratory screening device comprises three or more vibratory screening boxes, a drawer-type support, and a screening vibration table; the three or more vibratory screening boxes are disposed on the drawer-type support, the drawer-type support is disposed on the screening vibration table, and the drawer-type support is provided with a water inlet on the top; each vibratory screening box is arranged with a soil particle outlet on a side surface and with a mesh screen mounted inside, a border of the mesh screen intersects with the soil particle outlet, the vibratory screening boxes are arranged from top to bottom in the order of the mesh sizes of corresponding mesh screens, and the bottommost vibratory screening box is arranged with a water outlet at the bottom of a side surface; the water collecting device comprises a pressure sensor and a water collecting tank, the pressure sensor is disposed at the bottom inside the water collecting tank, and the screening vibration table is mounted on the water collecting tank via a spring; the conveying device comprises a soil particle conveying channel, a pusher mechanism, and a small platform; the soil particle outlet is connected to an inlet end of the soil particle conveying channel, an outlet end of the soil particle conveying channel is connected to an inlet end of the small platform, and the pusher mechanism is configured to push the soil particles screened by the screening device to the weighing device for measurement; the weighing device comprises a particle collecting box, an electronic weigher, and a platform support; an outlet end of the small platform is connected to one end of the particle collecting box, the particle collecting box is disposed on the electronic weigher, and the electronic weigher is disposed on the platform support; the collecting and computing device comprises a controller and a computer storage device, the controller is configured to control the operation of the testing system, and the computer storage device is configured to store and calculate the data transmitted from the electronic weigher and the pressure sensor; the computer storage device is connected to the controller, the controller is connected to the electronic weigher, and the controller is also connected to the screening vibration table, the pusher mechanisms and the pressure sensor.

12 . The testing system according to claim 11 , wherein the vibration frequency of the screening vibration table is controlled by the controller, the parameters, including the mesh diameter of the mesh screens and the number of the mesh screens, are inputted into the computer storage device connected via the controller, then the computer storage device calculates a general law of distribution of particles in different particle sizes and the proportion of loss of particles in different particle sizes in each time interval.

13 . The testing system according to claim 11 , wherein the pusher mechanism comprises a hair brush, a slide rail, a drive belt, a servo motor, a pair of tension wheels, a driving wheel, a first driven wheel and a second driven wheel; the slide rail is arranged along the mesh screen, the soil particle conveying channel, and the small platform, the driving wheel is fixed to a tail end of the slide rail, the first driven wheel is fixed to the head end of the slide rail, the second driven wheel is fixed to the slide rail where the soil particle conveying channel meets the small platform, the driving wheel is connected to the first driven wheel and the second driven wheel via the drive belt, and the servo motor is connected to the driving wheel via a coupling; the hair brush is slidably connected to the slide rail, one end of the drive belt is fixed to one of the pair of tension wheels, and the other end of the drive belt is fixed to the other one of the pair of tension wheels and the tension wheel is fixed to the hair brush, so that the hair brush reciprocates between the mesh screens and the small platform; the pushing frequency of the pusher mechanism is controlled by the controller.

14 . The testing system according to claim 11 , wherein the soil particle conveying channel, the small platform, and the mesh screen are hinged together, so that an inclination angle of the soil particle conveying channel can be adjusted according to the actual requirement.

15 . The testing system according to claim 11 , wherein the bottom surface of the bottommost vibratory screening box is arranged at a set inclination angle, and the lower end of the bottom surface is at the water outlet side, while the higher end of the bottom surface is away from the water outlet side.

16 . The testing system according to claim 11 , wherein the vibratory screening boxes are rectangular parallelepiped screening boxes, and the mesh screens are rectangular mesh screens.

17 . The testing system according to claim 11 , wherein the mesh screens are made of stainless steel material, and the vibratory screening boxes are made of iron material.

18 . The testing system according to claim 11 , wherein the screening vibration table comprises a solenoid.

19 . The testing system according to claim 11 , wherein the mesh screens, the conveying devices, and the weighing devices are arranged in one-to-one correspondence.

20 . A testing method for measuring the loss of particles in a water inrush process in real time by utilizing the testing system according to claim 11 , comprising the following steps:
(1) placing the apparatus below a water inrush spot, adjusting the number of required vibratory screening boxes and the specification and number of corresponding mesh screens, powering the apparatus so that the apparatus is in a ready state, and inputting the parameters, including the mesh diameter of the mesh screens and the quantity of the mesh screens, into the computer storage device connected via the controller; (2) lost substances falling into the vibratory screening box from the water inrush spot after water inrush starts and vibrating on the mesh screens continuously, so that soil particles in smaller particle diameter fall to the next mesh screen, and then pushing the soil particles left with the pusher into the corresponding conveying device; (3) pushing the soil particles at corresponding level with the pusher into the corresponding weighing device, recording the mass of the soil particles with the electronic weigher, and transmitting the data via the controller to the computer storage device; (4) collecting the water flowing out of t

Assignees

• Univ China Mining

Inventors

• Wang Yingchao
• Geng Fan
• Yang Shengqi
• Zhang Qiang
• Jing Hongwen
• Han Lijun
• Meng Fanshu
• Zhao Ning
• Meng Bo
• Meng Qingbin

Classifications

• G01N2015/0053

  in liquids, e.g. trouble · CPC title

• G01N15/0272

  with screening; with classification by filtering (B01D takes precedence) · CPC title

• G01N2001/1006

  Dispersed solids · CPC title

• G01N1/10 Primary

  in the liquid or fluent state {(burettes, pipettes B01L3/02; sampling of ground water E02D1/06; metering by volume of fluids or fluent solid material G01F11/00, G01F13/00)} · CPC title

• G01N5/04 Primary

  by removing a component, e.g. by evaporation, and weighing the remainder · CPC title