Abstract:今年已84岁高龄的中国工程院刘广志院士仍然心系祖国现代化建设和探矿工程事业的发展，近日他向国土资源部领导及相关部门提交了一份工作建议，经征得刘广志院士的同意，本刊摘要刊登，以飨广大探矿工程界同仁及本刊读者。[编者按]

Abstract:Composite foundation with CFG pile and gravel pile is taken in recently deposited liquefying silt ground in Yellow River alluvial plain. CFG pile can increase the bearing capacity of foundation with its rigidity, and gravel pile can eliminate the liquidation of silt ground. This construction method is proved workable.

Abstract:Dalian COSCO 300000 DWT floating dock is the largest floating dock engineering in China at present,with 30 sea piles of 800 mm in diameter,embedded 4~5 m(the deepest is up to 8 m) in intermediary weathering rock.Barge was used in sea pile construction,and FGC-15D large diameterwet reverse circulation DTH was adopted for hole completion.

Abstract:通过对天津英郡花园深基坑工程发生漏水、流泥险情的堵漏处理，介绍了基坑内侧采用快硬性刚性止水材料“水不漏”堵漏、基坑外侧采用双液注浆封住水道的堵漏方法。

Abstract:上海环球金融贸易中心裙楼设计为立柱桩205根，采用逆作法施工，施工中存在立柱顶标高变化大、垂直度不好控制等问题。针对施工中的困难问题，采取了两次固定钢立柱法、导向架联接法、吊筋替代器等有效技术对策，取得了良好的效果。

Abstract:在上海市某保护性古旧建筑基础托换加固中采用了微型钢管桩，介绍了振冲法沉桩的施工工艺及取得的效果。

Abstract:静压桩具有诸多优点而被广泛使用，但其对周边环境的挤土效应一直是施工中要注意甚至特别处理的问题，介绍一工程实例，采用施工应力释放孔措施解决挤土效应获得成功。

Abstract:简要介绍了软弱地基处理的几种方法，结合汕头市北郊立交桥的工程实例，论述了选择深层搅拌法进行处理的可行性及其基本设计参数的确定方法。

Abstract:Back-reaming is a very important step in pipe paving construction with method of trenchless technology. The quality of back-reaming will determine the result of the hole construction. Based on equal-torque principle, the thesis established a mathematical model, and deduced the formula to calculate the diameter of back-reaming. The author also programmed software that can carry out the optimum design, and gave out some rational suggestion.

Abstract:结合工程实例，介绍了非开挖定向穿越铺设通讯管道及无线导向在流速较大的河流中的处理办法。

Abstract:In the Three Gorges reservoir region, the scale and amount of landslide are both great, the controlling engineering will make a great deal capital consumption. So monitoring and predicting engineering for landslide becomes an economic effectual measure of geological hazard prevention. Take the example of monitoring and predicting engineering of Huoshitan landslide in Fengjie County, Chongqing City, this article introduces the monitoring and predicting design.

Abstract:The paper analyzes the working status and failure mode of drilling pipe in horizontal directional drilling, compares the drilling pipe made by solid forging and friction welding, discusses how to improve HDD drilling pipe, and gives some proposals in application.

Abstract:The paper introduces the technology improvement on medium frequency furnace for traditional hot pressing diamond bit, such as control on starting scan, medium frequency power supply, automatic adjustment for impedance and temperature control on closed-loop.

Abstract:为在岩心钻进中实现不停钻倒杆，研究了双卡盘接力给进装置，应用到XY-4型钻机上。结构简单，夹持可靠，操作灵活，可实现钻进中不停钻倒杆。

Abstract:Waste drilling fluid is the main pollutant in oil and gas exploration. Synthetically evaluation system is established for environment pollution caused by hazardous substances of drilling fluid additives, biodegradafion, bio-toxicity and waste drilling fluid pollution, total monitoring is carried out for non-polluted disposed to realize environment protection.

Abstract:By analyzing the existing problems of case pulling from super thick unconsolidated stratum, the paper put forward a series of measures or plans in case design, pulling technique, restraining stratum swell and case protection, and it was proved to be applicable.

Abstract:对陕西凤太矿田易斜地层在钻孔施工中出现的钻孔弯曲问题进行了分析研究，结合以往的施工经验，采取了钻孔的方位、倾角提前预偏，自制简易钻塔、以较小的钻孔倾角开孔、螺杆钻定向、修弯钻铤等防斜治斜措施，取得了较好的效果。

Abstract:介绍了大口径煤矿排水井在较复杂地层中的成孔、完井的施工技术。从多个角度详细介绍了利用正循环钻进工艺施工过程中，对于一些复杂地层的处理方法和处理工艺。利用泥浆处理技术，成功克服了大口径排粉的困难；应用塔式钻具及减压钻进技术保证了钻孔垂直度。建议在类似工程中推广应用气举反循环钻进工艺技术。

Abstract:通过工程实例，分析深井套管挤扁事故产生的原因和过程，介绍了其处理方法及处理效果。

Abstract:The most difficult problem of drilling in hard and compact rocks is that drilling efficiency is very low. In this case, a new type of hot-pressing diamond bit was developed. By changing weakly-bonded materials and adding strengthened granular graphite to bit matrix, the diamond exposure of bit was improved. Based on the tests, the relation between diamond exposure and graphite size, graphite content in matrix and strengthening degree were obtained. Field drilling results showed higher diamond exposure; penetration rate was 1.2m/h; service life exceeded 20m.

Abstract:According to the unstable condition of the displaceable block and the breakage term of the stratified rock, this paper analyzed the stability of surrounding rock during the excavating process in different geological structures. And according to the relation between rock occurrence of the underground chamber and geometrical boundary of excavation, the paper gave the method to positioning breakage. Finally, by the analysis on the cause of collapse in engineering, evaluation on stability of surrounding rock in stratified rock was further tested.

Abstract:Neighborhood tunnel is a special tunnel structural style different from multi-arch tunnel and separated tunnel, and the construction methods and middle rock wall consolidation technology are still in developing stage. This article illustrates all about these.

Abstract:在安徽铜陵冬瓜山-850m回风道突水治理工程中，通过技术创新，采用先进防突措施及工艺，应用白行设计的钻进系统设置逆止阀、孔口安装封闭器、特制泄水闸阀及孔内封闭器、设置砼挡水墙等措施，成功地完成了突水治理任务，为国内同类型矿山突水治理在技术上探索出了一条有效、经济、科学适用的治理途径。