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

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04-06-2014 дата публикации

Single-liquid-stabilized cement-based slurry for surrounding rock consolidation of 1000-meter-depth horizontal roadway

Номер: CN103833294A
Автор: FENG XUHAI, LIU SHUJIE, TIAN LE, AN XULIANG, XU RUN, GAO XIAOGENG, GAO GANGRONG, YUAN DONGFENG, XIAO WEI, ZHOU QUANBING, HUANG JIAN, ZHAO HOUSHENG, ZOU YU
Принадлежит:

The invention discloses single-liquid-stabilized cement-based slurry for a surrounding rock consolidation of 1000-meter-depth horizontal roadway. The slurry comprises the following components in parts by weight: 80-100 parts of a gel material, 60-150 parts of water and 1-15 parts of a compound admixture, wherein the compound admixture comprises 0-100 parts of an inorganic stabilizer, 0-100 parts of an organic stabilizer, 0-100 parts of a structure reinforcing agent and 0-100 parts of a compound retarder. Due to physical and chemical actions of the compound admixture, the slurry has the excellent characteristics of low viscosity, good liquidity, high stability, long coagulation time and controllability; a slurry consolidated body has the characteristics of low early strength and high long-term strength, normal tensile bonding strength and shear strength.

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Номер записи: 1
13-10-2010 дата публикации

Shaft sinking process for expansion well completion of mine vertical shaft with boring method

Номер: CN0101858218A
Автор: XIN CAI, FAXIANG CHEN, YUANKUN CHEN, BENJIE HU, GUANGYU HU, HAIBO HUANG, WENZENG LI, RIHUI LIU, ZHIQIANG LIU, JIN MA, JISHENG SHI, CHUAN WANG, CONGPING WANG, XIN WANG, HOUSHENG ZHAO, SHIYUN ZHAO, CAI XIN, CHEN FAXIANG, CHEN YUANKUN, HU BENJIE, HU GUANGYU, HUANG HAIBO, LI WENZENG, LIU RIHUI, LIU ZHIQIANG, MA JIN, SHI JISHENG, WANG CHUAN, WANG CONGPING, WANG XIN, ZHAO HOUSHENG, ZHAO SHIYUN
Принадлежит:

The invention relates to a shaft sinking process for a expansion well completion of mine vertical shaft with boring method, mainly solving the problems of large amount of equipments occupied, high engineering cost, low efficiency, slow velocity of well completion in current mine vertical shaft well completion and comprising the following steps: 1) drilling a shaft; 2) prefabricating a well wall; 3) sinking the well wall; and 4) filling the sunk well wall. In the step of drilling the shaft, the modes of a primary leading hole and a primary final expanding hole are used for well completion, which can greatly improve the well completion speed of the shaft sinking with the boring method by about 20%; a primary leading hole is used for drilling only, which decreases the amount of equipment occupied, reduces slurry emission by about 20% and lowers environment pollution. By adopting a high power drilling machine, a special drilling tool and reasonable technical parameters, the well completion ...

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Номер записи: 2