1、“云南地震和水電建設(shè)有關(guān)聯(lián)”the yunnan earthquake is related to hydropower construction"a 6.5 magnitude earthquake in yunnan county, ludian province in august 3rd has killed more than 600 people and caused serious secondary geological disasters the earthquake triggered a landslide in the upper reaches of the

2、 hongshi hydropower station under construction and formed a barrier lake lake lake water more than 1000 meters high, submerged more than 1000 acres of farmland, directly endanger the downstream hydropower stationsyang yong geological ecologists years of study in jinsha river basin geological problem

3、s by chinese and foreign visits, from the 2012 yiliang earthquake to the ludian earthquake, from the time of occurrence and distribution of earthquake source, and the construction of the jinsha river downstream xiangjiaba and xiluodu power station and the two giant niulanjiang ceiling power station

4、reservoir have relevancesino foreign dialogue: is there any sign that the earthquake in yunnan, ludian, is related to the construction of hydropower stations?yang yong: currently only face such basic information, the earthquake epicenter was located in the leading ludian county town wadi tamura unde

5、r the jinsha river is a tributary of the kraal river canyon, from niulanjiang river seventh cascade hydropower station dam is 7 km to the ceiling the reservoir construction in 2007, 2011 (the kraal river water power generation operation, pla.rming 10 level development, has built 4, built in 2); from

6、 jinsha river xiluodu reservoir (niu lanjiang downstream backwater area) is only 10 kilometersthe september 2012 yiliang earthquake epicenter in 2011 built reservoir power station luoze river malin reservoir tail less than 10 kilometers away from the jinsha river xiangjiaba reservoir; the nearest po

7、int is less than 60 kilometersyongshan earthquake in april 2014, the epicenter from jinsha river xiluodu reservoir less than 7 kilometers closestfrom the time of earthquake occurrence and the distribution of hypocenter, it is related to the construction of the downstream jinsha river, xiangjiaba, xi

8、luodu, two giant power stations, and the storage of water storage in the dam and ceiling power stationsino foreign dialogue: jinsha river basin is the most concentrated area of geological disasters in china and even in the world what are the risks in the layout and construction of dense high dams an

9、d large storage hydropower stations here?yang yong: jinsha tributary of the jianggan earthquake in sichuan yunnan across the fault zone, and some section of the fault zone parallel or overlap zone and geological condition, geological disasters and geological rock dense mountain canyon, in this river

10、 layout intensive construction of high dams and large capacity hydropower station, there are two aspects of geological risk:one is caused by the operation of the hydropower system faces seismic damage, including dam, power plant, ground construction, power transmission and transformation facilities,

11、 transmission line and so on, once a strong earthquake, the epicenter near the words if these systems, loss damage is serious, and the formation of secondary geological disasters and disaster chain chain continuedthe two is the complex and active earthquake activity danger area in the jinsha river b

12、asin, and the frequency and intensity of the reservoir induced earthquake will increase in recent years, the seismic activity is active, especially with the earthquake in sichuan yunnan, which is an objective fact, although there is no reservoir in this area will be a strong earthquake, but the rese

13、rvoir may be more strongly stimulate the release of stress, the release mechanism of science can not explain, humans do not have the ability to recognize and control the law.the layout of hydropower construction in hengduan mountains and jinsha river has been neglected in the harsh geological enviro

14、nment,the important role of river blockage caused by earthquake disaster in the geomorphic dynamic process of river valley.according to the analysis of historical earthquake records in the jinsha river and our study, we perform a 7-8 earthquake occurred in the corresponding section of the jinsha riv

15、er, the jinsha river disaster may occur:there may be landslide in the upper reaches of the jiao tong gorge, forming 2-3 dammed lakes.batang - benzilan section may form a continuous distribution of landslides, many ancient landslides will be dormant in the resurrection, the lake was beaded distributi

16、on, su walong, chang bo, corona power plant and transmission system has been hit.the middle reaches of tiger leaping gorge could be large-scale collapse, resulting in blocking the river, ocean, ludila power plant reservoir possible large-scale landslide damming, hit by the transmission systemthe dow

17、nstream wudongde reservoir possible large-scale landslide dam under aqiao - da shi peng may ancient landslide resurrection, zhong wushan, baishapo, carbon hill, because people may lead to large scale landslides, blocking river river dam quickly returned to the threat, power plants and buildings on t

18、he ground due to the collapse of canyon on both sides will be hit.the baihetan reservoir forming dense, landslide and debris flow source, reservoir tail because people, such as the number of baishapo rockfall geological cause blocking river canyon in power plant and power system will collapse due to

19、 massive hitxiluodu reservoir area will form a series of mountain landslides, power plants will be out of control and water upstream dam break floods the river blocking a severe testsino foreign dialogue: what are the conditions for hydropower construction to induce earthquakes?yang yong: the presen

20、t study considers that the reservoir induced seismicity depends on the geological environment, geological tectonic setting, reservoir size and overall operation conditions of the reservoir areafrom the analysis of the world nearly more than 2000 reservoirs of the earthquake, water depth and storage

21、capacity in the dynamic mechanism of reservoir induced earthquake in the causal relationship is very obvious: water load generated by the normal stress and shear stress is far less than the intact rock compressive strength and shear strength if you have the following two conditions: 1 rock fissures;

22、 excess pore water pressure generated by the 2 water load is large enough, then the direct effect of reservoir load generated by shear stress and pore pressure on the formation of induced earthquake factors at the same time, it is also an indirect factor triggering larger initial stressthis is like

23、a balloon, in the absence of external pressure, it will maintain the state of equilibrium or gradual release of pressure in the external pressure, the pressure will accelerate the release, if you touch it with a needle will instantly release and explosion, earthquake is in all conditions formed when

24、 there are large and small tip effecttherefore, we can not believe that the reservoir induced earthquake will not form a major earthquakealthough there are no reservoirs in the world that cause more than 7 earthquakes, there is no case in the world for constructing high density hydropower stations i

25、n hengduan mountains, where geological stress is highly concentratedthe earthquake in sichuan yunnan with the hengduan mountains rivers distribution of sedimentary rock, metamorphic rock and igneous rocks are exposed, and the symbol of the lithosphere tectonic activity is most intense, the most comp

26、licated structure of ophiolite melange belt the rock structure is broken and the fracture structure is complex, and the seepage conditions are different in the construction and planning of the power station, reservoir and dam area,the reservoir rock caused by the compressive and shear strength decre

27、ase, damage of the rock stress equilibrium state, change the hydrodynamic conditions of groundwater and reservoir rock dynamic balance, in other conditions, will become an important factor of reservoir induced earthquake in the area of river has the world，s most active tectonics, active faults and r

28、eservoir dam power station arranged in a crisscross pattern, it is difficult to avoid the tectonic activity area, and most faults and seismic activity have genetic relationshipin addition, due to the f1ow of the rivers with the seasonal variation of hengduan mountains large, once in the river to for

29、m a large reservoir of end to end groups, elimination of frequent flood and reservoir volume increment of alternating difference and frequent scheduling, caused by changing the depth of the water storage capacity, can also cause the reservoir rock structure instantaneous strain, in this rapid change

30、 frequently that may also lead to imbalance and stress inducedearthquake.sino foreign dialogue: at present, the great leap forward in china，s hydropower construction has not been reduced. it has already entered china，s southwest and qinghai tibet plateau. will hydropower stations be the best choice for easing the tension in china，s electricity industry?yang yong: china，s total installed