Law of Orebody Caving by Block Caving System;
阶段崩落法中的矿体崩落规律
Discuss on a simulated system for rock mass caving and large-scally;
岩体大规模自然崩落模拟系统的初探
Numerical simulation of natural caving is conducted from meso-mechanics view through particle on the basis of method(PFM).
采用颗粒流方法对矿岩的自然崩落规律进行数值模拟计算,提出在颗粒模型中确定细观接触力学参数及模拟初始地应力的方法。
Research on cavability of orebody based on Laubscher's caving chart;
基于Laubscher崩落图的矿体可崩性研究
Especially for the definition and analysis of induced fissures created by hydraulic fracturing and borehole wall breakouts,there were many advantages of this equipment an.
通过一个300m和一个800m典型钻孔的实际测试结果,揭示超声波钻孔电视在地应力测量研究领域中的几个应用实例,如:岩层裂缝的检测、地应力测试段的选定、岩芯定向,特别是对水压致裂法形成的诱发裂缝和孔壁崩落的测定及分析,在地应力测量研究中将可显示出较强的优势,尤其是最大水平主应力方向的获取,更优于其它方法。
The echo time image of cir- cumferential borehole imaging log(CBIL)can visually depict the behaviors of borehole wall such as wellbore avalanche, fracturing under reservoir bed stress.
井周声波成像测井(CBIL)回波时间图像能够直观地反映储层应力作用下的井壁表现如井眼崩落、裂缝等,根据这些应力响应特征可以判断储层的应力方向。
The structural parameters used all along by the pillarless sublevel caving method in Gongchangling Underground Iron Mine show the section height of 60 m,the subsection height of 12 m,and the caving length of 1.
弓长岭井下铁矿无底柱分段崩落法一直沿用的结构参数是：阶段高度60m,分段高度12m,崩矿步距1。
sublevel blast-hole method
深孔分段崩落采矿法
sudden fall of a mass of earth,mud,etc
（土、泥等的）突然崩落
sublevel undercut caving method
分段下部掏槽崩落开采
induced block caving
阶段人工崩落开采法
Mechanism of capping rock collapse by no-pillar sublevel caving
无底柱分段崩落法开采顶板围岩崩落机理
top slicing combined with ore caving
下向水平分层崩落采矿法
The tombstone was lichenous and crumbling.
墓碑长满了地衣,已在崩落。
a slide of large masses of snow and ice and mud down a mountain.
大块雪、冰和泥的混合物向山下的崩落。
(geology) the descent of a large mass of earth or rocks or snow etc..
（地质学）土、岩石或雪的崩落。
The masonry of the old building began to crumble.
旧楼房的砖石结构开始崩落。
Support Technique and Equipment for Block Caving in Tongkuangyu Copper Mine
铜矿峪矿矿块崩落法支护技术与设备
The Application of Trench-continuously-advanced Caving Method for Unit Block
单元矿块堑沟连续推进崩落法的应用
Development of MCAI Courseware for Sublevel Caving;
无底柱崩落采矿法的MCAI课件的开发
Mining design procedures of the deep mining process sublevel caving stoping method
无底柱分段崩落采矿法回采设计方法
Numerical Simulation on Caving Process Zone Induced by Undercut
拉底诱导的岩体崩落过程区数值模拟
Experimental Research on Small Segment Caving Mining Method in Qianhe Gold Mine
前河金矿小分段崩落采矿法试验研究
The results show that the great plastic yield areas and pull failure areas are formed in the base structure with caved area extends.
结果表明,随矿岩崩落开采,崩落区下方岩层出现较大范围的塑性破坏区和拉破坏区。
A mass of snow and rock broke away and fell on the climbers.
一堆积雪和岩石突然崩落到登山者的身上.