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Rock coupling penetration test apparatus and rock coupling penetration test method

A penetration test device and rock technology, which is applied in the field of rock penetration tests, can solve problems such as difficulty in high-temperature penetration tests, uneven heating, and acid reduction, and achieve the effects of preventing heat loss, preventing heat exchange, and convenient operation

Inactive Publication Date: 2017-08-18
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Solved technical problems: In view of the simple heating method of the temperature control system in the existing rock coupling penetration test device, uneven heating, small temperature variation range, it is difficult to realize high temperature penetration test, the design function of the existing penetration test device is monotonous, and there are few test conditions problem, the present invention provides a rock coupling penetration test device and method, which can effectively adjust the temperature, prevent heat loss, and configure the chemical solution by means of automatic mixing and automatic injection system, which can automatically control the pH value of the solution and solve the problem of carbonic acid solution. Medium CO 2 It is easy to volatilize from the solution and cause the acidity to decrease, which is convenient for the systematic research on the change law of the permeability characteristics of fractured rocks under the coupled action of temperature-seepage-stress-chemical multi-field, and the test of rock permeability and mechanical properties under the condition of real reduction of water-rock interaction Research

Method used

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  • Rock coupling penetration test apparatus and rock coupling penetration test method
  • Rock coupling penetration test apparatus and rock coupling penetration test method
  • Rock coupling penetration test apparatus and rock coupling penetration test method

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Embodiment 1

[0042] figure 1 It is a principle schematic diagram of a rock coupling penetration test device, and the present invention includes a water storage tank 36, a pressure chamber 9, a booster cylinder 13, an oil-water converter, a temperature control system, a chemical solution self-distribution system and a piping system.

[0043] refer to Figure 6 , the pump 35 pumps the water in the water tank 51 into the water storage tank 36, heats the water in the water storage tank 36 through the titanium heating tube 52, and the water flowing out from the water storage tank 36 passes through the outlet pipe at the bottom of the water storage tank 36 Some intelligent electromagnetic control valves a 39 and flow sensors a 40 enter the chemical solution self-distribution system, and the chemical solution self-distribution system includes a chemical solution storage device 49, an intelligent electromagnetic control valve located at the outlet pipe at the bottom of the chemical solution storag...

Embodiment 2

[0063] The temperature control system includes pressure chamber temperature control and seepage water temperature control.

[0064] Seepage water temperature control: such as Figure 6 As shown, after power on, the pump 35 delivers water to the water storage tank 36, and under the action of the pressure transmitter 37, the titanium heating tube 52 can heat the water in the water storage tank 36 to a predetermined temperature, and simultaneously monitor it in real time. The outflow of hot water in the water storage tank 36 is controlled by the intelligent electromagnetic regulating valve a 39 and the flow sensor a 40, and the water flow pipeline is covered with good thermal insulation materials, so that the temperature of the water infiltrated into the sample is very close to the test temperature.

[0065] Pressure chamber heating: eg figure 2 , Figure 4 As shown, the heat transfer oil 25 is injected into the vacuum device 26 of the heater 27, and then the oil guide pipe is...

Embodiment 3

[0073] Such as Figure 6 As shown, after the water in the water storage tank 36 is heated or cooled to the target temperature, open the intelligent electromagnetic regulating valve a39 and the flow sensor a40, so that the water in the water storage tank 36 flows into the seepage pipeline; open the intelligent electromagnetic regulating valve b 41 and flow sensor b 42, the solution in the prepared chemical solution storage 44 also flows into the seepage pipeline; utilize the feedback control of the corresponding electromagnetic regulating valve opening to control the corresponding flow by using the computer control system to collect the flow sensor; and start the intelligent The high-precision pH meter a 45 measures the pH value of the pipeline until the pH value of the pipeline solution reaches the target value, and then opens the intelligent electromagnetic regulating valve d 47 to pass the chemical solution that meets the requirements into the seepage pipeline to seep into th...

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Abstract

The invention relates to a rock coupling penetration test apparatus and rock coupling penetration test method, and specifically relates to a rock coupling penetration test apparatus and a rock coupling penetration test method under the temperature-stress-seepage-chemistry multi-field coupling effect. The rock coupling penetration test apparatus comprises a computer control console, a water storage box, a pressure chamber, a booster cylinder, an oil-water converter, a temperature control system, a chemical solution self-preparation system and a pipeline system. The rock coupling penetration test method comprises: preparing and installing a sample; installing a temperature device; setting temperature control; carrying out a temperature test; and automatically controlling the test to enter a stabilization stage. According to the present invention, based on the problems of simple heating mode of the temperature control system, narrow temperature change range, single function and less test condition in the existing rock coupling penetration test apparatus, the temperature can be effectively adjusted while the pH value of the chemical solution can be automatically controlled, the problem that the easy volatilization of CO2 from the carbonic acid solution causes the reduced acidity can be solved, and the rock penetration and mechanical property test research under the water rock action condition can be really reflected.

Description

technical field [0001] The invention relates to the field of rock (body) penetration testing, and specifically relates to a rock penetration testing device and method under the coupled action of temperature-stress-seepage-chemical multi-field. Background technique [0002] In recent years, researchers have discovered the changing law of permeability characteristics of fractured rocks under the coupled action of temperature-seepage-stress-chemistry (THMC), which has great impact on nuclear waste deep burial disposal, explosive soft foundation treatment, carbon dioxide geological storage, geothermal development, oil acidification mining, Water conservancy and hydropower engineering and many other rock engineering related to water have very important scientific significance. At present, the experimental research on the THMC coupling effect of rock is still in the theoretical research stage, and there will be a lot of room for improvement in the future. The temperature system an...

Claims

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/0806G01N15/08
Inventor 盛金昌张肖肖周庆杜昀宸詹美礼罗玉龙何淑媛刘星星
Owner HOHAI UNIV
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