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- Analysis on suitability of mini type hydraulic powered caving support fro deep inclined special thick seam mining 急倾斜特厚煤层开采微型放顶煤支架适应性分析
- special thick seam mining 特厚煤层
- The failure laws of surrounding rocks and over lying bed in the steep special thickness seam mining 急斜特厚煤层开采围岩与覆盖层破坏规律
- Based on the recent years mining practice,study the technical management problems in thick seam mining,accumulate some actual experiences in roof management in thick seam,adopt the efficient technical measures and achieve the good result. 通过多年的开采实践 ,作者着重研究了厚煤层开采的技术管理问题 ,在厚煤层开采顶板管理方面积累了一些实际经验 ,采取了行之有效的技术措施 ,收到了较好的效果
- spontaneous ignition special thick seam 易发火特厚煤层
- Pillar-support method adopted for thick seam mining 刀柱采煤法在厚煤层开采中的应用
- Mine pressure behave law of fully mechanized caving and mining face in special thick seam of Tingnan Coalmine 亭南煤矿特厚煤层综放工作面矿压显现规律
- Application of full seam bolt support to mine wide cross section gateway in special thick seam 全煤锚杆支护在特厚煤层宽断面巷道的应用
- Practice on trial mining in special thick seam with soft roof, soft coal, soft floor, high inclination, rich water and high gass under nappe 推覆体下大倾角、富水、高瓦斯、特厚三软煤层开采实践
- Practice on Gas Drainage in Special Thick Seam of Low-breathe Freely 高位钻孔抽放低透气性特厚煤层瓦斯的实践
- he performance speciality of electro-hydraulic controlling powered support WS1. 7-210/450 and the adaptability of its structure to thick seam mining are investigated. 探讨了WS1．7-210／450型电液控制液压支架的性能特点及支架结构对大采高的适应性。
- Fast equipment removing technology of fully mechanized top coal caving mining face in two hard and special thick seams of Pingshuo mining area 平朔矿区两硬特厚煤层综放工作面快速回撤工艺
- steep special thick seam 急倾斜特厚煤层
- thick seam mining 厚煤层开采
- special thick seam 特厚煤层
- Water-coal mixture burst is a new mine disaster in exploiting steeply inclined thick coal seam mining. 摘要急倾斜厚煤层开采时发生的水煤体溃泄是一种新的矿井灾害。
- Usually for mining maximal coal resources,repeated mining is used especially in specially thick coal seam. 为了最大限度的开采煤炭资源,通常进行复采,尤其是特厚煤层。
- New Mining techniques and equipments are utilized to raise the production and efficiency with longwall mining in thick seam. 为了提高中厚煤层长壁综采的高产高效,采用了新的开采技术工艺和设备,达到了预想的目的。
- Combining with the actual situation in Qianqiu coal mine, the technology for comprehensive gas treatment in spontaneously inflammable and specially thick coal seam is introduced. 结合千秋煤矿实际情况,介绍了易自燃特厚煤层瓦斯综合治理技术。
- An initial mining depth in the thick seam or a depth of a full seam cut will cause an obvious increasing in crack height and also in horseshoe distribution. 增大重复开采厚度以提高采煤工效和矿井经济效益;
