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“八五”期间,科技攻关项目为22项,其中重点为6项。 1.豫西“三软”不稳定煤层开采技术研究 包括各种技术方案的论证和对比,开采工艺和方法研究,支架选型或新架型设计,顶板管理和监控等,以有效地扩大煤炭资源回收,保持本省煤炭工业优势。 2.工字钢双向可缩性梯形支架研制 研制新型可缩性构件,目标为纵向、横向可缩400—800毫米,巷道维护成本比刚性支架降低20％,以改善巷道维护状况,降低失修率,提高支架复用率。 3.深井冻结技术研究 主要进行定向钻具纠偏、冻结壁形成的实测、预报和控制以及冻结专用管材的探伤和应力应变的测量等的研究,以解决陈四楼井筒(目前为国内最深冻结深度的井筒)施工中的技术难题。 4.矿井瓦斯抽放技术的研究 “八五”期间,继续在鹤壁、焦作等局和地方煤矿进行矿井瓦斯抽放技术的研究和试验应用先进技术装备,在裂隙带、老塘、低透气性煤层中进行瓦斯抽放试验,进一步提高瓦斯抽放率(要求提高到30％),减少瓦斯突出事故,提高掘进速度,缓和采掘接替紧张状况。
During the “Eighth Five-Year Plan” period, there were 22 scientific and technological research projects, of which 6 were key points. 1. Research on the “Three Soft” Unstable Coal Seam Mining Technology in West Henan Province includes the demonstration and comparison of various technical schemes, the research on mining technology and methods, the design of support or new frame, the management and monitoring of roof, etc. to effectively expand the coal Resource recovery, to maintain the province’s coal industry advantages. 2. I-beam bidirectional retractable trapezoidal stent developed a new type of retractable components, the goal for the longitudinal and horizontal can be reduced 400-800 mm, roadway maintenance costs 20% lower than rigid brackets to improve roadway maintenance and reduce disability rate , Improve the stent reuse rate. 3. Deep-well freezing technology research mainly focuses on the correction of the directional drilling tools, the measurement, prediction and control of frozen wall formation, and the testing of the frozen special pipe material and the measurement of stress and strain. In order to solve the problem that the depth of the deepest freezing depth The wellbore) construction of the technical problems. 4. Research on Mine Gas Drainage Technology During the “Eighth Five-Year Plan” period, we continued to apply advanced technology and equipment to the research and test of mine gas drainage technology in Hebi, Jiaozuo and other local coal mines. In the fissure zone, Laotang, low permeability Gas drainage tests carried out in the coal seam to further improve the gas drainage rate (required to increase to 30%), reduce gas outburst accidents, improve tunneling speed and ease the tension of mining to take over.