查询词典 rock-bottom

The results show that advanced detection apparatus DTC-150 can detect geologic formation in front of the mine excavation 100 m away, and can more accurately detect faults, rock fissures, rock broken cinctures and water-rich situation, and the collection velocity can be used to classify the wall rock.Key words: seismic exploration; mine; advanced detection; long distance; multi-wave and multi-component

研究结果表明：采用DTC-150井下超前探测仪器能够较准确地探测到掘进面前方100 m内断层、围岩裂隙、岩石破碎带以及富水情况，据由该仪器获得的波速对围岩进行分类。

According to several source rocks and many regions of generation, transportation, accumulation in the East of LinQing depression, the author compartmentalizes the petroleum systems of the East of LinQing Depression by two points: The first is taking hydrocarbon source rock as a core to name by hydrocarbon source rock and reliability, and the second is taking secondary structure unit containing the possible area of generation, transport and a〓umulation of oil and gas as a core to name by source rock name and structure unit name and reliability.

结合临清坳东部存在多层系烃源岩、多个油气生成运移聚集区域的特点，对临清坳陷东部的油气系统按二个层次进行了划分，第一个层次以烃源岩为核心，用烃源岩+可靠性来命名；第二个层次以次级构造单元为核心，包含了油气生成运移聚集的可能区域，用源岩名+构造单元名+可靠性来命名。

The process of balance is on thealternation of arch and beam、 explores the space-time law of separatedstrata"s occurrence、 development and distribution and this paper damasks theoverlying rock as injecting zone and no-injecting zone from the aspect of controllingoverlying rock.2.The separated strata is over fracture zone and under integral crook zone inwhere the rock formation"s moving is of monolayer or of many layers more oftenthan not, and the thickness of strata is very small while comparing with integralcrook zone.

通过物理模拟及数值仿真模拟的实验研究，分析了采动覆岩的移动与破坏过程，提出了采空区上方覆岩的平衡形式是以拱和梁交替作用来实现平衡→失稳→再平衡的力学过程观点，并详细研究了覆岩中离层产生、发展与分布的时空规律，进而从覆岩控制角度划分了可充填离层带与不可充填离层带，为实际应用奠定基础； 2。

Lower Cretaceous belong to retrograding sedimentary sequence of tide-flat-carbonate platform facies,and have good hydrocarbon source rock and reservoir rock but no good cap rock.

下白垩统属退积的潮坪—碳酸盐岩台地沉积序列，生、储油层发育，但盖层发育相对较差，有可能在靠近改则—尼玛断裂带附近形成一些与逆冲断层有关的小型油气藏。

A hydropower station project is built on high mountain canyon tracts of which natural slope usually has a zestier of strong unloading rock and a zestier of ebb unloading and corresponding zone of strong weathering rock, and intact fresh rock in its inside.

水电工程常常建在高山峡谷地带，其天然岸坡通常由坡面向内有一个强卸荷带和弱卸荷带以及相应的强风化和弱风化带，内侧则为完整新鲜的岩石。

We, in this paper, combined the finite elements analysis with space similar material analogy test, studied the stability of the un-supported enclosing rock section during the comprehensive operation construction of the vertical coal shafts, analyzed the distribution laws of enclosing rock strain and surface radial displacement, hereby studying the un-supported height influence upon the enclosing rock.

本文将有限元分析和空间相似材料模拟试验相结合。对煤矿立井应用混合作业方式施工时未支护段围岩稳定性进行了研究，分析了围岩应力及表面径向位移的分布规律，研究了围岩失稳形式及失稳规律，并由此研究了未支护段高度对围岩稳定性的影响。

Based on the literature review, this paper analyzes and investigates the development and status of digital image processing techniques in quantitative analysis and associated numerical simulation of the geomaterials. It includes quantitative analysis of particle shapes, quantitative analysis of internal structures of soil, rock, asphalt concretes and cement concrete, quantitative analysis of macro-structures of rock mass in the ground, and numerical modeling and simulation of geomaterials by taking into account their actual internal structures, Based on the review results, the paper discusses the development history and future trend of the utilization of the digital images and associated techniques in soil and rock.

本文在研究相关文献的基础上，分析和研究了数字图像技术在土、岩及混凝土内部结构定量分析和力学数值计算中的发展过程和研究成果，内容包括：单个骨料颗粒形态特征定量分析；土、岩和混凝土内部结构定量分析；岩体结构定量分析中的应用；基于数字图像处理的土、岩和混凝土细观结构力学计算。

The bearing capability of reinforced broken rock arch is also discussed. The result has been applied in engineering, a soft rock roadway, and its surrounding rock got effectively controlled.

研究了锚固组合拱承载能力的理论计算问题并应用于工程实践，有效地控制了软岩巷道围岩。

There were two situations for cap rock destructed by faulting : one was reduce of successive distribution area of cap rock, another was reduce of thickness of cap rock.

断层对盖层的破坏主要表现为两个方面：一是减小了盖层的连续封盖面积，二是减小了盖层的厚度。

This gorge, towering rock formations, rock cliff if the wall, although soilless rock, but there are large areas of the mountains of the rare species of whitepi song lin and apes appear from time to time.

此峡，怪石突兀、巉岩若壁，虽是无土石山，但山上却有大片的珍稀树种白皮松林，并时有猿猴出没。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。