Large-dip-angle coal bed flying rock disaster accurate simulation experiment table and application method
A technology of simulation experiment and large inclination angle, which is applied in the field of laboratory physical simulation experiment platform and accurate simulation experiment platform of large inclination angle coal seam flying gangue disaster, which can solve the problems of low reliability, high feasibility and low cost, and achieve convenient operation , the effect of simple structure
Pending Publication Date: 2019-08-20
ANHUI UNIV OF SCI & TECH
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Problems solved by technology
[0005] At present, the research on flying gangue in high-inclination coal seams mainly focuses on two aspects: protective devices and coal mining process optimization. Generally, numerical simulation, field test, and laboratory test are used. Due to the simplification of material properties and boundary conditions, numerical simulation methods lead to Its reliability is low; field tests are often abandoned due to high cost, difficulty in implementation, and lack of universality; indoor tests are a commonly used research method in recent years, with the characteristics of time saving, low cost, and high feasibility At present, the prevention and control of flying gangue is mainly passive protection, and a combined protection system is often formed, but the influence of coal seam inclination angle and floor strength on the migration characteristics of flying gangue is ignored
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[0036] In conjunction with the accompanying drawings, the use of the present invention will be further described.
[0037] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, a high-inclination coal seam flying gangue disaster-causing precision simulation test bench, including flying gangue slide groove model, flying gangue start model, gangue blocking model, speed measurement model.
[0038] The groove model of the flying gangue slideway includes a steel frame 1, a transparent protective plate 2, a groove 4, and a telescopic bracket 3. The groove and the steel frame are surrounded by transparent protective plates, and the transparent protective plates are all acrylic plates Material, described telescopic support has four parts, is respectively No. 1 support 31, No. 2 support 32, No. 3 support 33, No. 4 support 34, adjusts the inclination degree of flying gangue slideway model by the variation of telescopic support height;
[0039] The flying gangue ...
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The invention discloses a large-dip-angle coal bed flying rock disaster accurate simulation experiment table and an application method. The large-dip-angle coal bed flying rock disaster accurate simulation experiment table comprises a flying rock slideway groove model, a flying rock starting model, a rock blocking model and a velocity measurement model. The large-dip-angle coal bed flying rock disaster accurate simulation experiment table shoots rocks through the flying rock starting model, simulates a working face bottom plate and a flying rock protection system through the flying rock slideway groove model and the rock blocking model correspondingly and finally monitors and records a flying rock motion trace through the velocity measurement model. The large-dip-angle coal bed flying rockdisaster accurate simulation experiment table realizes large-dip-angle coal bed flying rock disaster accurate experiment simulation under different geological conditions through high-efficiency cooperation of the models. The large-dip-angle coal bed flying rock disaster accurate simulation experiment table provided by the invention can conduct multi-angle accurate physical simulation on the flying rock disaster overall process under the complex geological conditions and has important significance on large-dip-angle coal bed flying rock prevention.
Description
[0001] Technical field: [0002] The invention relates to a physical simulation experiment platform for a laboratory, in particular to an accurate simulation experiment platform and an application method for disaster-induced disasters caused by flying gangue in a large-inclination coal seam, belonging to the field of disaster prevention and control in coal mines. [0003] Background technique: [0004] Flying gangue is a dynamic phenomenon in which coal (rock) blocks are generated due to falling coal, slabs, and roof leaks in the working face during the mining process of large-inclination coal seams, and cause damage to on-site operators and equipment. Coal (rock) blocks are separated from the parent body and migrate under the action of gravity, which has a large impact energy. When they collide with workers and equipment, they are harmful and have complex migration characteristics, which seriously restrict the safe and efficient mining of coal mines. In order to prevent and co...
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IPC IPC(8): E21F17/18E21F17/00G09B25/02
CPCE21F17/00E21F17/18G09B25/02
Inventor 魏祯杨科张通池小楼
Owner ANHUI UNIV OF SCI & TECH