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Bo Suanzi Wing Guidong small hydropower

00 ~ 4000m / s. Impermeable rock ability to improve and strengthen the integrity of rock mass,[link widoczny dla zalogowanych], and enhance the shear strength of rock, should be set curtain and grouting, and drainage facilities in the downstream dam good job for the benefit of reducing uplift pressure. Of weathering diabase porphyry dikes, because of its character is poor, low intensity, should be carried out trough dug, and then concrete plug sealing treatment. 4.3 dam height 475 ~ 485m (dam) use of weak weathering,[link widoczny dla zalogowanych], the upper part of rock weathering to the weak base surface, the upper rock, fractured than the development of ~ development, rock weathering along the joint plane, the majority of open fracture surface No filling or sediment half-filling, fresh rock fracture, organizational structure is not destroyed, a more complete ~ more broken rock, medium hard and permeable rock is more serious, saturated compressive strength of 30 ~ 50MPa, elastic modulus (0 .6 ~ 0. Cool

× 10MPa,[link widoczny dla zalogowanych], longitudinal wave velocity of 3000 ~ 3500m / s. Despite the weak weathering, the upper rock, especially the upper mass, hydro-geological conditions of poor engineering,[link widoczny dla zalogowanych], but taken with the weak weathered rock bottom after the same treatment measures, it can reach the upper dam on the dam (base) geological requirements. 5 Conclusion 1) According to the Water Resources and Hydropower Engineering Survey and construction experience, combined with modern rock testing technology, the dam can be used for analysis of bedrock surface is a very important job. Longtan hydropower station results show that the bedrock surface can be established using a combination of factors, just from the weathering zone of departure is not comprehensive. The analysis, part of the Longtan dam weak weathered rock based on the place, which shorten the construction cycle and reduce the project cost, will play an important role. 2) Study of the bedrock surface can be used, in addition to comprehensive engineering geological factors of the hydrology, there should consider the size of the project size, dam type, and different parts of the stress state. 3) the bedrock surface can be used in the study, the need to strengthen the adit, drilling core observation, and to carry out acoustic testing techniques, the use of a single hole (hole) and the group sound hole (hole) through a combination of sound waves on methods, better mutual authentication, complement each other. If conditions or wells with electric logging television and other means, the more accurately and intuitively reflect a base surface, the geological conditions under the rock, to identify more rational use of bedrock. 4) With the computer in the field of hydrological engineering geology and rock testing broaden the application of technology development, can be used to determine the bedrock surface will gradually move toward quantitative, specific, making it more rational, more scientific. ■ Zoude Kang (1962 a), male. Engineer, Assistant Manager, mainly in hydroelectric engineering geology. Email: gzsdsjy @ 163. net Bosuan Zai Yong Wang Xiaozhong II OO Guidong four small hydropower August 18 at Guidong Gui East landscape beauty, Guidong strange landscape, the three Joint Typhoon Luo Xiao Ling, steep river more Bi. String clear water pearl, pearl world map. Small water network built off of small, old area Pentium hurry. Guidong County of old revolutionary base areas, rich in water resources can be developed 191,000 kilowatts. In recent years, provincial party secretary Yang Zhengwu Guidong hanging points in helping the poor, the strong support from the policy, joint development of power plants in full swing, to the rapid development of rural hydropower. The end of 2003, installed capacity has reached 1I. 40,000 kilowatts, 360 million kwh electricity within five years more than tripled, and fully reflects the well-off rural hydropower construction on a strong supporting role. Director of Hunan Provincial Department of Water Resources Wang Xiaozhong his party braved the August heat Guidong depth investigation, deep feelings, the excitement, Ode poetry. * 37 *
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