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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 2. Отображено 2.
14-07-2023 дата публикации

Method for improving stability of soft soil slope through cooperation of electroosmosis, electrophoresis and grouting

Номер: CN116427439A
Автор: GUO JUNQING, LONG TENG, CHAI ZHAOYUN, DONG XIAOQIANG, LI HENGZHONG, LIU PENGHUI, REN XIAOYANG, XI ZETAO, WANG HENG
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The invention belongs to the technical field of soft soil side slope reinforcement, and provides a method for improving the stability of a soft soil side slope through electroosmosis-electrophoresis-grouting cooperation in order to solve the problems that an existing soft soil side slope stability method is poor in using effect, large in work amount, high in cost and the like. Drilling holes in the surface of the slope body to embed hollow anchor rods, sleeving anode rings on the anchor rods and connecting the anode rings with wires, placing the hollow anchor rods at the bottoms of the formed holes, and connecting the wires with the positive pole of a direct-current power supply outside the slope body; cathode rings are arranged at the base plate and the stop-grouting plug and connected with the negative electrode of a direct-current power source outside the slope, and electrolyte is injected into the hollow anchor rod. Switching on a direct-current power supply to form a current field, ...

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Номер записи: 1
04-04-2023 дата публикации

Method for kilometer horizontal drilling, fracturing, roof cutting and pressure relief roadway protection and coal pillar width reduction

Номер: CN115898423A
Автор: GUO JUNQING, WANG HENG, ZHANG BAISHENG, LI HENGZHONG, FENG GUORUI, FENG TIANXIANG, ZHANG SHIRUI, XI ZETAO, REN XIAOYANG, LIU PENGHUI, LONG TENG
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The invention discloses a kilometer horizontal drilling fracturing roof cutting pressure relief roadway protecting and coal pillar width reducing method, which belongs to the field of coal mining, and has the technical key points that the method comprises the following steps: determining the magnitude and direction of the maximum principal stress and the minimum principal stress, determining the layer position and thickness of a hard rock layer which plays a key role in the pressure of a working surface, and determining the thickness of the hard rock layer; kilometer horizontal drilling parameters and hydraulic fracturing parameters are determined and designed by combining ground stress test results, uniaxial compressive strength, thickness and the like of a hard rock stratum. After the method is adopted, the load on the coal pillar is reduced, the coal recovery rate of the working face is improved, and the roadway convergence amount and maintenance amount are reduced. Compared with traditional ...

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Номер записи: 2