Based on the analysis of the monitoring data during construction and the settlement of stacking yard surveyed after 2 years ' operation , this paper introduces the design and construction of sct2 ground treatment engineering , and main technical problems such as drilling holes and boundary treatment , together with relevant solutions 摘要结合施工过程中的各项监测数据及堆场使用2年后的沉降情况，介绍sct2地基处理工程的设计、施工情况，以及施工中存在的引孔、边界处理等主要技术问题及其解决办法。
Firstly , it is to learn the building conditions of the ning - yang county , collect the datum of the area structures , stratum , hydraulic geology , quake conditions , and collect the reconnaissance data , the hydraulic geology data , materials of the ground treatment and construction 研究方法之一是了解宁阳县城区的城建状况，收集宁阳县城区的区域构造、区域地层、区域水文地质、地震情况等资料。收集十余年来宁阳县城区的岩土工程勘察资料、水文地质资料、地基处理及施工资料。
The grouting is the most useful method of the ground treatment , specially to deal with the rock foundation of the dam . because of the concealment , complexity and importance of the grouting project . the grouting test must be done to determine the grouting parameter , such as the grouting technology , the grouting material , etc 灌浆是基础处理的常用方法，尤其是建立在岩石基础上的大坝的基础处理，由于灌浆工程的隐蔽性、复杂性和重要性，通常需要进行灌浆试验来确定灌浆工艺、浆材等灌浆参数，而灌浆试验由于其复杂性、试验数量的限制等因素难以为灌浆施工提供全面有效、真实的灌浆信息。
He has contributed significantly towards experimental research in a wide range of practical problems including slope stability , reinforced fill , retaining walls and excavation support systems , submarine pipelines , piling and ground treatment processes . his contributions in retaining walls and reinforced soils earned him the sir benjamin baker silver medal awarded by the uk institution of civil engineers 他对实验研究作出极大的贡献，研究课题实用性高而且广泛，包括边坡稳定、加固填土、护土墙和深基开挖支撑系统、海底管道、桩基础和地基处理。在护土墙及加固填土方面的研究使他赢得英国土木工程师学会的sirbenjaminbakersilvermedal 。
Cemented soil has been extensively used to ground treatment , however , engineering experiences suggest that low strength and large deformation has restricted its further application in the engineering . to improve engineering properties , many additives have been added to cemented soil 水泥土工程应用广泛，然而工程实践表明，水泥土强度不够高、形成的复合地基后期变形较大等问题制约了水泥土的进一步应用，选择适宜的外掺剂改善水泥土性能是解决这些问题的重要途径。
Through changing and improving the traditionally adopted technology and equipment in compacted lime - soil pile foundation , so as to eliminate weak collapsibility of loess in luoyang and increase the strength of foundation , the authors present formulas to compute the average dry density and void ratio after ground treatment and demonstrate the feasibility of these formulas through practical project cases 摘要基于洛阳地区次生黄土的弱湿陷性，对传统的灰土挤密桩施工工艺和设备进行改进，达到消除湿陷性，提高地基承载力的目的，并且推导出地基处理前后干密度和孔隙比随置换率变化的关系，以工程实例证明该公式的可行性，避免布桩型式的经验性和处理结果的不确定性。
Based on the failure modes , the bearing capacity calculations of single pile and its composite foundation are analyzed . and combined with the practical project , the comparison analysis of the calculation is done . according to the analysis , bearing capacity calculation for composite foundation can use the computing formulas recommended by technical specifications for ground treatment of building foundation ( jgj79 - 91 ) and the improved computation formulas based on brauns " theory 首先介绍了碎石桩的破坏模式，并在此基础上分析了单桩及其复合地基的承载力计算，并结合实测工程作了计算对比分析，分析结果表明：复合地基承载力计算可采用《建筑地基处理技术规范( jgj79 - 91 ) 》推荐的公式计算，也可采用基于brauns理论的改进计算式。
