A simulation experiment method for one-way heating of overburden rock in underground coal gasification
A technology for underground gasification and simulation experiments, applied in thermal analysis of materials, instruments, measuring devices, etc., can solve the problems of ignoring the real heating state, unable to obtain the thermal cracking characteristics of the temperature field distribution of the overlying rock, and achieve a simple and easy-to-control heating method Effect
Active Publication Date: 2019-06-11
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology
The traditional heating treatment method of rock specimens is to place the entire rock specimen in a heating furnace for temperature programming or constant temperature heating, and then study the thermal damage characteristics of the specimen. In the heating state, it is also impossible to obtain the temperature field distribution and thermal fracture characteristics of the overlying rock during the unidirectional heating process
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[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.
[0039] see Figure 1 to Figure 3 , the specific embodiment adopts the following technical solutions: a unidirectional heating simulation experiment system for underground coal gasification overlying rock, including a rock test piece 20, a tank body and a support part, a heat preservation part, a heating and temperature control part, a temperature monitoring part, Thermal stress monitoring part and acoustic emission monitoring part;
[0040] The size of the rock test piece 20 is Φ50×100mm;
[0041] The tank body and the support part include the upper Hastelloy pad, the lo...
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The invention discloses an underground coal gasification overlying rock one-way heating simulation experimental system and an underground coal gasification overlying rock one-way heating simulation experimental method. The experimental system comprises a rock test piece, a tank body and supporting frame part, a heat preservation part, a heating and temperature control part, a temperature monitoring part, a heat stress monitoring part and an acoustic emission monitoring part, wherein the size of the rock test piece is [phi]50*100mm; the tank body and supporting frame part comprises an upper hastelloy cushion block, a lower hastelloy cushion block, a hastelloy heating cushion block, an alloy steel tank body, an alloy steel tank body top cover, a spiral fastening disc, a stainless steel supporting column, an alloy steel base and an alloy steel upper bracket; the heat preservation part comprises an upper filling thermal-insulation and heat-preservation material and pyrophyllite powder; the heating and temperature control part comprises a nickel-chrome alloy heating sheet and a temperature controller. The underground coal gasification overlying rock one-way heating simulation experimental system is convenient to operate, is simple, convenient and effective, and can be used for the research of the temperature distribution, the heat stress distribution and the acoustic emission characteristic of the one-way heating of the rock test piece.
Description
technical field [0001] The invention relates to an underground coal gasification overlying rock unidirectional heating simulation experiment system and method. Background technique [0002] Underground coal gasification technology (Underground Coal Gasification, UCG) is the use of chemical mining methods to directly burn and gasify coal in situ underground to produce combustible gas. It is a new technology for high-carbon resources and low-carbon development of clean energy. Coordinated coal green mining technology. Underground coal gasification combines the three processes of well construction, coal mining and gasification into one. Due to its advantages of low gas production cost, high safety and good environmental benefits, it has received extensive attention worldwide. The former Soviet Union , Europe, the United States, Japan, Australia, China and many Asian countries have carried out a large number of theoretical research and industrial experiments. It has broad appl...
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IPC IPC(8): G01N25/00
CPCG01N25/00
Inventor 辛林程卫民王刚谢军于岩斌刘震倪冠华
Owner SHANDONG UNIV OF SCI & TECH