The structure and composition of the sand field have heterogeneity.
砂砾料场结构和颗粒组成具不均一性,钻探是目前实践中最常用的勘探方法,但因其局限性钻孔样品一般很难反映砂砾石的真实级配。
Reliability fuzzy comprehensive evaluation of man-machine-environment system in stope;
采场人-机-环境系统可靠性模糊综合评价
Fuzzy comprehensive evaluation of working environment in stope;
采场作业环境可靠性模糊综合评判
Fuzzy synthesis analysis on human reliability of stope;
采场人员可靠性模糊综合分析
Ventilation resistance and ventilation isobar in the workings were measured with barometer.
采用气压计混合读数法测定了综放采场区域的通风阻力及通风等势图。
Based on theory of porous medium seepage, the airflow in mine workings is regarded as a problem of unsteady flow.
以多孔介质渗流理论为基础，视采场气体流动为非稳定流问题，将应用数学中的奇异摄动理论应用于采矿问题中，为采矿工程问题的研究提供了新的手段；为矿井安全工程、特别是实现自动监控提供了理论依据和计算方法，丰富了采场通风理论。
The impact load on the support induced in the hard roof, whenweighting, always brings about catastrophe in the workings.
本文的研究结果也可用于支架选型、大流量卸载阀选型和坚硬顶板采场来压强度的预计。
Study on Impact of Exploration Methods on Quality Assessment of Sand Field
勘探方法对砂砾料场质量评价影响的研究
Test Study and Numerical Simulation on Wetting Deformation of Gravel Sand;
砂砾石料浸水变形特性研究及砂砾石坝蓄水变形的数值模拟
STUDY ON MECHANISM OF PS-F GROUTING MATERIAL FOR SANDY CONGLOMERATE GROTTOES
砂砾岩石窟灌浆材料PS-F机制研究
Dam Building Using Gravel-Sand Mixture in Dry Aeolian Sand Region in Central Ningxia Hui Autonomous Region
宁夏中部干旱风沙区砾砂混合料筑坝分析
Experimental Study on Size Effect of Sandy-gravel Material Subjected to Cyclic Loading;
动力荷载作用下砂砾料的尺寸效应试验研究
Material Dissolution and Engineering Application of Cement Sand and Gravel (CSG) Dam;
胶凝砂砾石坝材料的渗透溶蚀研究及工程应用
Study on Anti-cracking Property of Multi-stabilized Gravel Base;
水泥综合稳定砂砾基层材料抗裂性能研究
Theoretical Research on the Non-linear Bearing Capacity of Gravel Material for Base Course
砂砾基层材料的非线性承载力特性理论研究
Influence Factors of Bench Gravel Material Bank's Compaction Quality
砂砾石料河滩路堤压实质量影响因素分析
The comprehensive evaluation of rebound modulus nonlinear of sand stone base material
砂砾石基层材料回弹模量非线性的综合评判
Gravel Embankment Compaction Quality Influence Factor Analysis
砂砾石料堤坝路基压实质量影响因素分析
Relationship Between Dry Density of Sand and Gravel Mixture and Frequency of Rolling
砂砾石混合料干密度与碾压遍数的关系研究
"Clay, silt, sand, and gravel. "
粘土，粉砂，砂土和砾石。
Study on Dynamic Properties of Core Material and Dam-Foundation Fine Gravel of Earth-Rock Dam;
土石坝心墙料及坝基细砂砾料动力特性试验研究
Analysis on rolling compaction experiment of gravel soil material from Zone No.0 of borrow area for Pubugou Dam
瀑布沟大坝砾石土料场0区材料碾压试验分析
Experimental Study on Liquefaction and Behavior of Post-liquefaction Deformation and Strength in Saturated Sand-gravel Composites;
饱和砂砾料液化及液化后变形与强度特性试验研究
Application of FMI in Sedimentary Facies Analysis in the Northern of Dongying Depression
电成像测井资料在东营凹陷北带砂砾岩体沉积相分析中的应用
Study on the stress-strain relation of liquefied saturated sand-gravel composites and method of parameter identification
饱和砂砾料液化后应力应变关系及参数确定方法