(1) on the slope of the building, in addition to the main building, often must also be arranged to ensure the safe use of the main project, but also indispensable maintenance engineering. The lessons of the failed project more than once warned us, in the arrangement of engineering construction sequence, we should adhere to the principle of maintaining the implementation of the project before; For some dangerous slopes, we should insist on supporting first and then digging, otherwise it will lead to accidents. Try to morning the main body early benefit of the good will, often backfire, once the accident happens, then the disposal of twice the result.

(2) In slope buildings, it is inevitable to excavate and fill some earth and rock, and improper excavation can lead to the deterioration of slope rock and soil stability conditions, resulting in slope deformation and failure. A large number of unorganized landfills not only bring about the evaluation of the utilization of the landfills but also cause the instability of the landfills and the slope soil under the landfills. On a slope construction, therefore, especially from the top down and arrangement of a series of buildings across the contour, the foundation evaluation is not only confined to individual buildings, and must be the pursuit of, combined with the natural condition and the stability conditions of slope, on the premise of guarantee the stability of slope as a whole, to adjust measures to local conditions, the potential and dig up to the mountain in moderate and reasonable layout. The necessary engineering facilities, such as retaining structures, are arranged on the favorable part of the slope soil with the minimum sliding force.

(3) In the evaluation of foundation sliding stability, in addition to checking the natural condition of slope, it should also check the status quo changed by the building and considering the building load. Practice has proved that it is not all right to pay attention to the layout of buildings on slopes that are naturally stable according to experience. Ninety percent of engineering landslides caused by engineering operations are due to the lack of excavation and fill design. Practice has also proved that not arbitrary cutting square load reduction is conducive to slope stability.

(4) Slope instability is closely related to the influence and action of water. According to statistics, nearly 90% of engineering landslides are related to water. In the comprehensive control of slope, the control of surface water and groundwater is always an important and indispensable measure, especially for those large-scale landslides that cannot be resisted by engineering. Water can affect slope stability from different aspects, such as load increment after soil saturation, hydrodynamic pressure, erosion and latent erosion, and reduction of sliding surface strength parameters. Therefore, the so-called mountain control is water control, water control, slope stability will be improved. The regulation of water should be dredged avoid blocking.

(5) The slope stability condition determined by checking calculation is not immutable. The slope sliding stability coefficient is the main aspect affecting the contradiction, and the factors of anti-sliding and sliding are random variables varying in time and space. Only by analyzing the fluctuation of various influencing factors with time, place and condition and judging the probability of adverse combination, can engineering countermeasures be prevented.

(6) is very important to the correct determination of shear strength parameters of sliding surface, especially for large sliding body, the parameter values are almost the same, and the processing quantities are very different, so it is often necessary to calculate every minute in the project. The accurate determination of parameters is not only limited by people's understanding and testing methods, but also limited by the complexity of rock and soil mass deformation and the exposure degree of inherent contradictions of natural phenomena. It is often verified by means of comprehensive condition analogy and inversion analysis. Therefore, the correct evaluation should be based on the feedback of rock mass deformation and stress information.

(7) The shear strength of the possible sliding surface of the dangerous slope which has not yet slid as a whole is higher than that of the sliding surface of the sliding body which has undergone global displacement and has changed from potential energy to potential energy; However, the strength of sliding surface of the sliding body after multiple displacement often decreases with the increase of slip quantity or times. It is concluded that it is an effective evaluation and treatment criterion to give priority to prevention and to treat engineering sooner rather than later.

Shanghai Qiangqiang Foundation Engineering Co., LTD. 's business covers foundation pit engineering, pile foundation engineering, land and waterFoundation treatment, slope treatment and other engineering fields. Around" Excellent technology, reliable process", construction fast "technical requirements,Is to provide customers with land, water foundation engineering technical consultation, construction services and other comprehensive solutions of the entity enterprise. Contact Number: 400-100-2850