Yuecheng Reservoir Bank Collapse Research

The reservoir collapse research and development level are still not high, particularly now the predicted methods of collapse width are premature(not perfect) yet, are still in the period of decision making on experience, relative major breakthroughs have not been achieved in this regard. The predicted ways adopted all have obvious limitations, the universal method is not available, each way need to be modified necessarily in combination with the project conditions, as well proved by observation data. Each reservoir geological conditions are very different, Yuecheng reservoir geological backgrounds are even more unique at home and abroad, such as loose deposit material in reservoir with a very complicated origin, variation and involuted lithological units component, while loessal soil most generally distributes, which is one of main materials of reservoir bank body, bank body with many types and prominent structure, bank slope with a wide range, reservoir special operation mode and so on. Therefore, it has a relative high discussion and learned studying value to research Yuecheng reservoir collapse problem, also can supply a gap in this field. Yuecheng reservoir collapse is become a very concerned social issue in reservoir region, has caused a great land and economical loss, the local people intensively appeal to deal it, so it has a very high real-life significance. Although Yuecheng reservoir collapse occurs many years ago, but until 2009, the systematical, completely observation, investigation and research have not been conducted.The topic refers to some information of engineering geological work at feasibility research stage of Yuecheng reservoir, the more deep analysis and research of collapse of Yuecheng reservoir have been done, for example, reservoir operation mode, collapse investigation methods, bank body conditions, collapse medium and properties, bank shape feature, bank types, bank structures, bank form character, collapse factors and collapse mechanism, the bank body feature of Yuecheng reservoir are understand and known from all round aspects, many views, different level and points, collapse development laws generally have been summarized, a objectivity, true and accordant fact evaluation has been made.And then, on the basis of surveying information, according to experience, and referring to project practice nearby and circumjacent region, the relevant predicted parameters for collapse width have been selected, the illustrating and calculation are be used to predict collapse width for long term, the comparison analysis and research between two ways have been finished in detail from many aspects, the foregoing collapse trend has been definitely judged.Moreover, the evaluation methods for collapse are concerned, the applied ways are given, the comprehensive estimate for collapse has been made; at the same time, bank change in the past, development in the future have been analyzed and compared with each other, bank activities and rules have been concluded in coming future.Eventually, collapse treatment countermeasures has been discussed, the related measures for collapse have been proposeded aiming at Yuecheng reservoir fact.