【正文】 外圍設備的支持和保護系統的中短期快速增加，然后變得逐漸穩(wěn)定。圖1 水平位移觀測點的安排根據《工程測量標準》，為滿足建設安全設防要求，項目建設的基礎基坑工程用途總監(jiān)測水平位移站TOPCOM GTS 701。（4）在基坑的AB段部分，應設置以下的參數：1000毫米的警衛(wèi)樁樁徑、 樁間隔為1300毫米、7米長度的人力挖孔灌注樁有15176。錨索支護樁適用于各類粘土、沙質土壤和較高的地下水位與接地層，尤其是粘性土外圍大集中式負荷或不同加載（路，2003）。環(huán)境條件分析的結果和水質量的地下水樣本表示站點中的地下水沒有不腐蝕混凝土的結構，但有弱腐蝕性的鋼結構?？梢哉f提供關鍵信息和科學有效地管理深基坑施工的監(jiān)測程序是成功的深基坑施工的關鍵(劉等人，2007）。深基坑工程主要應用于交通繁忙和高密度施工地區(qū)。 for the road settlement, the settlement value did not surpass 30mm and the settlement speed did not be bigger than 2mm/d。 42 16Hydrological geology conditions of underground. Surface water of the proposed site is not presentdevelopment, and the underground water was dominated by the bedrock fracture water. and the small amount of the upper perched water filled in the 11 layer of mainly were supplied by the precipitation and infiltration of surface water level of the upper perched water is discontinuous and had smaller water volume. The bedrock fracture water grew well nearby the contact face between the bedrock and the overburden layer,and formed the passageway of underground water along the penetration crevasse , the underground water seeped out from the surface along the slope when the side slope was excavated. The results of the analysis of environmental conditions and water quality of groundwater samples indicated that the groundwater in the site did not corrode a concrete structure, but had weak corrosiveness to the steel structure.2．DESIGN OF FOUNDATION PIT SUPPORT STRUCTURE The pit supporting scheme generally is classified to is of two kinds: one is the earth nail wall, and anther one the second is an anchorretaining pile. The earth nail wall is made up of the reinforced soil, and the earth nail and the board which was placed in the soil. Given the strengthen of the earth nail in situ and the bination with the sprayingup surface, the natural soil body forms the earth bulkhead. This which is similar to a gravity retaining wall that resists the earth pressure ing from the wall and the other external forces and enhances the stability of the entire side slope (foundation pit). Anchorretaining pile takes the drill hole filling pile as the retaining wall, and the pile and the anchor rod affects monly to achieve the stability of slope. Mechanism of anchorretaining pile is that the dense slope protection piles have high Bending Resistance and shear capability, simultaneously the anchor section of the anchor rod and the soil body take the pretension strength together to the dense slope protection piles, and prevent deformation of foundation pit supporting system. Combined effect of anchor rod and slope protection piles enhances the stability of entire supports and protection system. Anchorretaining pile is suitable to all kinds of clay, sandy soil and the earth layer with higher groundwater level, especially the cohesive soil peripheral with big centralized loads or varying loads (Lu, 2003).For the deeper excavation of foundation pit, based on the principle of guaranteed safety, this project proposed to use anchorretaining pile for supporting the foundation in the project. (1) In AD section of foundation pit, the following parameters were set up: 900mm of guard stake pile diameter, 1300mm of piles interval, 14 meters length of filling pile with manpower dig hole, 15176。 yhxcumt of Engineering Technique, Northeast Forestry University, Harbin,Heilongjiang 150040, China。 PH (086) 45182191771。Γ/inclination angle and 15m length for pile of nonprestressed anchor rod. (4) In AB axis section of foundation pit, the following parameters were set up: 1000mm of guard stake pile diameter, 1300mm of piles interval, 7 meters length of filling pile with manpower dig hole, 15176。在工程項目的建設當中,我們進行了一項關于水平位移與鄰近建筑物沉降并的實驗并及時對基坑實時監(jiān)測、提交數據的科學數據分析報告。在先前的研究中可知，全國深基坑工程事故的發(fā)生率一般約為全部深基坑工程工作的20%(唐，1997）。表1 地基土質物理力學指標土質編號土質類型密度Γ/ 塑性指數凝聚力c/kpa內部摩擦力Angleφ/011雜填土—52012平原土壤151221淤泥粘土251431粘土4216地下水文地質條件。鑒于原位的土釘和噴涂向上表面，天然土體形式結合加強土壤艙壁。傾斜角度，15米長度應設立自然地面下3m。規(guī)定有基坑的總長度為176米、。（常等人，2005）。測試組時及時提交測試結果，作出風險提示下給出警告，最后提出的支持和保護的結構處理方案。當顯示器價值達到或接近的安全值時，它將盡快實施安全早期警告的計劃。其次，在第二次挖掘和全面挖掘的進行中進行強化支持后，運動是穩(wěn)定的。隨著科學研究和深基坑工程施工安全意識的提高，基坑監(jiān)測有可能進一步被制度化、規(guī)范化和安全化。借助于有效地監(jiān)測基礎坑和有效性測試的支持和保護的基礎結構可以減少設計錯誤引起的地基基坑抖動。在基坑安全監(jiān)測的過程中，道路沉降及監(jiān)測值的鄰近建筑物傾斜應提供警告值。沉降觀察的CC，各自的其他的觀察所得的值很小，如圖所示。水平位移監(jiān)測密封梁的支持、保護水平位移監(jiān)測結果的支持及保護基坑周圍結構基坑結構所示圖圖5。這項工程安排在5天內進行監(jiān)測，觀察點的布設如圖1所示。傾角、非預應力錨桿樁達15米長度。錨桿桿和邊坡防護樁的綜合的效果增強了整個的支持和保護系統的穩(wěn)定。在基巖裂縫水增長井附近的基石與覆蓋層中的水沿滲透裂縫后在一定程度上會形成地下水沿滲透冰河的綠色通道，因此使得地下水沿坡面滲透出來。監(jiān)測人員應及時提供監(jiān)測數據的反饋信息（劉，2006），一旦出現到任何問題，能夠為減少災害提早發(fā)出警告。正文：隨著中國城市化的快速發(fā)展，深基坑的開挖工程對其需要空間的位置、結構的穩(wěn)定性和使用功能已提出更嚴格要求規(guī)定。 for the settlement and inclination rate of adjacent buildings, the biggest settlement differences of two nearby test points did not surpass 3‰. Arrangement of horizontal displacement observation points. Monitoring Security Value According to the project standard and the determination principle of security value, the security value of the foundation pit engineering