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3. P () change curve shown in Figure 4. Table 3 and Figure 4 show that the pressure field at any point in the pressure (P) and the shock wave arrival time (f) approximately exponential decay equation, and its decay rapidly. Thus, the engineering design of controlled blasting is safe and will not adversely affect slope stability. Sixth, blasting safety (earthquake) design of fly-rock from this not be considered, no mature theory of vibration velocity or experience formula is determined, the engineering is still controlled with conventional formula for estimating explosion]. U = K · (Q \5, a distance of blasting vibration on various objects affect the results in Table 4. calculated from Table 4 shows, 20m away from the blast outside the heart, almost not affected by the impact of blasting vibration. VII blasting blasting effect results fully met the design desired results, After the explosion proved by divers Tanmo: All bow to the sea side of the pile dumped in the mud pile Yang} basically dumped in the sea side of the mud,[link widoczny dla zalogowanych], there are some partial lateral side of the dumping in the sea mud. blast,[link widoczny dla zalogowanych], according to four weeks at about 100m After blasting Police Force personnel to observe the reflection of detonation to take the time commitment can only see the sea foam, the sound is not heard,[link widoczny dla zalogowanych], felt free. Learn the construction site who said that other projects without any feeling. and do not know the place is bursting out of their 150m . According to the analysis. This is the center of the kits above the mud surface lm, sharp burst shock wave attenuation through the media, the results of the water, showing the location of engineering design and reasonable layout of the kits. (continued on page 3 Cool

dielectric constant K {bad 4 200,200 the amount of attenuation index al1.515 charge Q (kg) I36 object distance r (m) i10f20f50 {1oof200, 20f50 {looU1 (era / s) f10.9f3.87} o.98f0.S5 {o125.48J1.39J0. 49 ~ 23 A ●, leaves +] 3_o0 ten league Figure 8 Schematic diagram of hollow block floating unit: mm less for foundation trench excavation, riprap, ramming the required duration and cost, substantial savings in construction cost. Xiamen Crab Lake hollow box spring construction of wharf, is a successful pour son. 2. soft ground construction of gravity quay, in the main structural design, first in the \to minimize the body weight, to reduce soil (foundation bed) stress purposes. 3. Gravity structure on soft ground, the main part of a greater distortion is inevitable, should be considered in the design of adequate reserve capacity, the structure should be appropriate measures, the construction should be as even as possible Jiahe Jia high, to avoid one go. \residual settlement. 4. wharf after the main form of backfill behind the rate control. is the key to the success of the construction process. construction and technical personnel should attach great importance to this process of site management and control operations in strict accordance with design requirements and serious manner observations, analytical observations, to overcome the impatience for the duration in time, well good job this off carefully. (Continued from page 23) initiation, the blast of the east of 60m away from the boat at the closing access electricity, only to see the water bubbling and accompanied by sound. but not felt. According to Stringer, a British scholar of transition that people felt response, the ground speed of the particle shock when 0.38 is equivalent to 0.2 / sec (table 0.51 ~ O.97cm / s) range. This shows that seismic waves in sedimentary layers in the later years is a very fast decay, the actual shock value is smaller than the theoretical value.,[link widoczny dla zalogowanych], burst, observed by measuring All structures were not any changes. 1 month after the explosion in the area 20m from the shore side of the sink 1.2m diameter steel pipe piles 32, the situation is normal. In summary, the control of blast design is correct , blasting a 38 a success, and the obvious economic benefits, the Party is satisfied.

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