共查询到20条相似文献,搜索用时 15 毫秒
1.
The formation regularities of mined-out space in an open pit have been established, and assessment of the mined-out space
utilization has been performed for flat-dipping and inclined bedded deposits mined by blocks.
__________
Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 5, pp. 62–69, September–October, 2007. 相似文献
2.
Substantiation of the sequence for opencast mining of a series of flat and inclined strata using the mined-out space for internal dumps 总被引:1,自引:0,他引:1
The possibilities of using the mined-out space of opencasts for placing the overburden in internal dumps are studied. It is
established that on completion of mining flat and inclined strata there are free capacities in the mined-out space consisting
of 40–70% of its volume which are a resource for placing the overburden from other opencasts with substantiation of the sequence
of mining large deposits. A complex criterion is suggested that takes account of energy expenditures for mining a deposit
and the energy damage caused to the environment. A procedure is given for solving the problem and results are presented of
calculations for the Taldinsk and the Tomusinsk deposits.
Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy
Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 97–106, May–June, 1999. 相似文献
3.
S. G. Molotilov V. K. Norri V. I. Cheskidov A. R. Mattis 《Journal of Mining Science》2006,42(6):622-627
An analysis is performed into the currently applied coal mining methods using mined-out space in an open pit, with describing
their basic advantages and disadvantages. The urgency of further development and wider application of the gritwise-and-capwise
methods that involve differently directed advance of a mining front and mined-out space utilized to the limit for overburden
storage is pointed out.
__________
Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 111–118, November–December, 2006. 相似文献
4.
5.
采用埋管技术对皖北煤电五沟煤矿CT101工作面采空区进行观测,获取了不同位置测点不同埋深时的温度、氧浓度等数据,通过对各测点温度及氧浓度的变化规律分析,确定了CT101工作面采空区自燃"三带"范围。同时对采空区温度场进行模拟,得出了该条件下采空区"三带"分布的一般规律,并对此种条件下"三带"分布的特殊情况及形成原因做出分析。 相似文献
6.
7.
8.
9.
在通过地质钻和潜孔钻对采空区进行钻探的基础上,利用钻通采空区的空区探孔,下放空区三维激光扫描仪对空区进行扫描获得空区形状、方位、埋深等参数,为后续空区处理提供准确资料。实践证明,该方法无论对现有矿山规模的正常生产,还是后续铜硫大开发项目的基建工程和正式运营均大有裨益,创造了巨大的社会经济效益,推动了大宝山矿的危机矿山转型。 相似文献
10.
CMS实测地下矿采空区建模及稳定性分析研究* 总被引:3,自引:0,他引:3
传统的采空区稳定性分析建立的数值分析模型,对空区的形状进行过多的简化,使得建立的空区模型过于简单,稳定性分析的结果可靠性较差。借助三维激光空区监测系统对地下矿山采空区进行三维扫描,精确的获取激光头到空区边界的距离。将全站仪测量的定位点坐标输入到CMSposprocess处理软件,将生成的数据输入到矿业工程软件3Dmine中建立起空区的实际赋存模型。研究用VC++编写出可以将3Dmine软件输出的块体质心点坐标直接导入有限差分软件FLAC3D中的应用程序,从而建立起空区力学模型,形成从实测模型到力学计算模型的新方法,大大提高了采空区稳定性分析的准确性和可靠性。结合石人沟铁矿空区稳定性分析工程实践,对石人沟铁矿-60 m水平南区空区进行静力计算,分析空区稳定性,获得了良好效果。 相似文献
11.
12.
邵东县石膏矿采空区地面稳定性评价及地质灾害防治对策 总被引:5,自引:0,他引:5
邵东县石膏矿长年开采且采空区未经处理, 总采空面积已达1.05 km2, 采空体积371 万m3 。针对邵东县石膏矿采空区顶板稳定性参数进行了计算, 指出全区34 个采空区都处于极不稳定到不稳定状态, 危险程度大, 并根据矿区实际提出了防治对策。 相似文献
13.
14.
15.
16.
采空区灾害危险度的模糊综合评价 总被引:17,自引:0,他引:17
运用模糊综合评价方法对采空区灾害危险度进行评价。将影响采空区灾害的水文地质因素、采空区参数、其它环境人为因素作为第一层加以考虑,在此基础上,确定了影响子因素,建立了数学模型。根据各因素所占权重及危险等级的隶属度获得模糊矩阵,从而求得采空区的危险度。 相似文献
17.
18.
19.
20.
以广东大宝山矿为例,在利用地质钻和潜孔钻对采空区进行钻探的基础上,通过在钻孔中下放三维激光扫描仪对空区进行扫描,获得矿山空区形状、方位、埋深等参数,为后续空区处理提供准确资料。实践证明,该方法无论对矿山现有规模的正常生产,还是对后续铜硫大开发项目的基建工程和正式运营均大有裨益,创造了巨大的社会经济效益。 相似文献