Analysis and Treatment of Common Quality Problem for Bored Pile

Construction Technology and Quality Control Measures of Bored Pile Foundation

钻孔灌注桩基础施工技术及质量控制措施

Analysis on the Mechanism of the Post-grouting Technique for the Bored Pile Construction

钻孔灌注桩后压浆技术效果的机理分析

Gray Variable Method of Evaluation on Construction Quality of Super-length Bored Pile

超长钻孔灌注桩施工质量评价的灰色变权方法

Construction process of underwater bored concrete pile as well as points for attention in construction is briefly introduced. Based upon analysis of engineering quality problems frequently encountered in construction corresponding prevention and treatment measures are proposed in order to ensure trouble-free construction of bored concrete pile.

简述了水下浇筑混凝土的过程及注意要点，分析了水下浇筑混凝土过程中经常遇到的工程质量问题，并介绍了预防及处理措施，以保证钻孔灌注桩工程的顺利进行。

CZ-1200 percussion drill was developed to improve and perfect the performances and structures of CZ-22 cable percussion Rig used in diaphragm wall, bored pile and water well drilling engineering in China.

针对目前国内防渗墙、灌注桩桩孔施工及水井钻凿的主要设备CZ-22型钢绳冲击式钻机在使用过程中的一些不足之处，研制开发了CZ-1200型冲击钻机。

Analysis of water emitting from the top of bored cast-in-situ Pile as well as settlement

钻孔灌注桩桩顶冒水原因分析及处理

The results indicate that the bored pile works well and has high potential carrying capacity. Under the precondition of construction quality, we can shorten pile's length and reduce investment through the measurement of pile's axial force and pile's end resistance.

结果表明，黄土地区的钻孔灌注桩有较高的承载潜力和良好的工作性状，在保证施工质量的前提下，可借助桩身轴力传递和桩端阻力的量测，缩短桩长，节约投资。

Surface borehole diameter and casing diameter as well as characteristics of filling materials can be achieved by calculating the horizontal movement and vertical stain at different depths.

通过计算地表钻孔在不同深度的水平位移和垂直变形可确定钻孔直径和所需安设套管的直径及套管外充填材料的性能。

The system collects the magnetic memory signals liberated from the stress concentration zone of the in-use borehole casing pipe, judges fast and correctly the state of the zone.

该检测系统可根据在役套管的应力集中区所产生的磁记忆信号快速、准确地判断套管的应力集中区状况。

On the basis of the principle of casing actual strength more than salt bed creep collapse load in non-uniform load, the safety in borehole casing ability be ensured.

按照非均布载荷下套管实际强度大于盐岩层蠕变外挤载荷的原则，确保井内套管安全。

Application of Oil Industry Special Purposed Floating Hoop and Shoe on Coalmine Service Borehole Casing Lowering and Consolidation

石油专用浮箍浮鞋在煤矿服务钻孔下管和固井中的应用

Early diagnosis for the stress concentration zone of borehole casing pipe by metal magnetic memory and wavelet transform

磁记忆与小波变换相结合的井下套管应力集中早期诊断方法

Research on Metal Magnetic Memory Forecasts the Malfunction of Borehole Casing Based on Wavelet Singularity Detection

金属磁记忆预测套管故障的小波奇异性检测研究

Forecast the malfunction of borehole casing by magnetism memory technology

用磁记忆检测技术预测井下套管故障

Study on systems of forecast the malfunction of borehole casing by metal magnetic memory technique

金属磁记忆预测井下套管故障系统的研究

Signal processing for metal magnetic memory testing of borehole casing based on wavelet transform

基于小波变换的套管金属磁记忆检测信号处理

The heat transfer of ground heat exchanger is enhanced by changing backfill materials for reducing the thermal resistance of borehole and controlling heat pump operation mode for delaying the soil temperature rise speed.

本文通过改变回填材料减小钻孔内热阻和控制热泵运行模式延迟土壤温升来强化埋管换热器的传热，提高系统运行效率。

The fluid and fine sand in the borehole enter the subsurface pump through the liner and then lifted to the ground.

井筒内液体和细小砂子通过筛管进入抽油泵内举升到地面。

The technology of removing the low concentration carbon dioxide in the atmosphere is essential for the life sustain in the area of manned aircraft, submarine, working at the borehole pump and so on.

大气中低浓度二氧化碳清除技术是载人航天器、潜水艇、深井作业等领域所必备的生命维持技术。

Distribution of the Borel Direction of the Entire Functions Product

整函数积的Borel方向的分布