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- In the past more than 10 years,the large diameter longhole mining technology in China has been developed greatly,with a series of grand achievements. 近十多年来，我国大直径深孔采矿技术有了长足的发展，取得了一系列重要成果。
- In the test of the large diameter longhole mining of No.91 orebody at Tongkeng mine,the stress and the displacement of wall rock at the stope drilling chamber were monitored. 在铜坑矿91号矿体大直径深孔采矿法试验过程中，对采场凿岩硐室围岩的应力状态和岩移进行了监测。
- Generally, the precision of longhole drilling now is fairly poor in China, which seriously restricts the development of the large diameter longhole mining technology. 目前,国内深孔凿岩的钻孔精度普遍较低,这一现状严重地制约大直径深孔采矿工艺的进一步发展。
- he large diameter longhole mining has advantages of high efficiency,low cost and good safety etc. 大直径深孔采矿具有效率高、成本低、安全性好等优点。
- Keywords High level pillar mining;Cemented fill-mass;Large diameter longhole mining method;Heterogenous interface control blast; 高阶段矿柱回采;胶结充填体;大直径深孔采矿法;异质界面控制爆破技术;
- Application of High Bench Large Diameter Longhole Blasting Technology in Anqing Copper Mine 高阶段大直径深孔爆破技术在安庆铜矿的应用
- Keywords raise sinking by blasting;large diameter longhole;blasting technology;water stemming;hole measuring by double deck boning rod; 爆破成井;大直径深孔;爆破技术;水封堵塞;双层测杆测孔;
- Blasthole deflection is an severe adverse factor when mining is carried out using large diameter long hole blasting . 在大直径深孔采矿中 ,炮孔偏斜是非常不利的因素。
- Approaching a Technical Problem of Home-made Large Diameter Bend. 大口径弯管国产化技术问题探讨。
- Large - diameter longhole miming 大直径深孔采矿法
- In recent years,severe rock fall occur in stopes with large-diameter longhole mining in Tonglushan Copper-iron Mine. 近年来,铜绿山铜铁矿深孔采场出现了严重的垮塌。
- The first use of 120m high-level large-diameter longhole mining in Anqing copper mine was made in china. 大直径深孔采矿法因为其高效率、低成本、安全性好在矿山得到了广泛的应用。
- Large diameter wafers are feasible and 200-mm wafers have been produced. 大直径片子已不难制造，200mm的片子也已产生了。
- Then the large-diameter longhole mining project which was employed in Tonglushan Copper-iron Mine is taken as an example. 大直径深孔采矿法因为其高效率、低成本、安全性好在矿山得到了广泛的应用。
- Impact experiments for anthracite of Yunjialing coal mine are performed on split Hopkinson pressure bar(SHPB) equipment with a large diameter of 75 mm. 利用大直径单轴分离式霍普金森压杆装置对云驾岭煤矿无烟煤进行了冲击压缩试验。
- And this optimai range was uesd for the adjustment of air space lengthin the large-diameter longhole mining in Tonglushan mine. 文章论证了空气间隔长度存在一个最佳范围，并将其在铜录山矿大孔径深孔采矿时的空气间隔长度调整中加以应用。
- Therefore,it can greatly improve stability of stopes and help to extend the application of large-diameter longhole mining method to enhance qualities of drilling. 因此,提高凿岩质量,能够大大改善采场的稳定性,有利于继续推广应用大直径深孔采矿法。
- Taking the west area in Wulongquan Limestone Mine of WISCO as an example,the reason is analyzed and large diameter deep-hole springing blasting is suggested. 文章以乌龙泉矿西区原始缓边坡为例,从理论上分析了出现这一问题的原因,提出采用大直径孔药壶爆破可较好地处理这一问题。
- Shandong Province is the largest diameter hose manufacturer. 是山东省最大口径胶管生产厂家。
