Horizontal explosive compaction land reclamation road building method

Abstract

The invention discloses a horizontal explosive compaction land reclamation road building method. In the method, the construction efficiency can be improved by adopting the continuous operation in the same operation area between the adjacent construction sections and sequence operation in different operation areas; during explosion operation, a pile foundation is formed by arranging a pile foundation explosive bag, and the silt displacement amount can be decreased by utilizing bearing force provided by the pile foundation; the horizontal explosive compaction land reclamation road building method has the beneficial technical effects that the construction efficiency is high, the engineering quantity is less, the explosive amount can be effectively reduced, and the high damage to the ecological environment can be avoided.

Description

technical field [0001] The invention relates to an embankment construction technology, in particular to a method for constructing roads by horizontally exploding silt-squeezing land reclamation. Background technique [0002] With the continuous development of cities, the problem of traffic congestion is becoming more and more prominent. Land roads can no longer meet the growing travel needs. Many coastal cities are already carrying out reclamation and road construction projects in full swing. [0003] The biggest problem in reclamation and road construction is how to deal with the soft soil foundation. For the processing of soft soil roadbed, generally adopt following three kinds of means in the prior art: 1, mechanical removal of silt and replacement of filling, this method earlier digs out silt with dredging boat, then replaces and fills in the high crushed stone of strength, but due to water The fluidity of the silt is high, the strength is extremely low, and the sil...

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Problems solved by technology

For the processing of soft soil roadbed, generally adopt following three kinds of means in the prior art: 1, mechanical removal of silt and replacement of filling, this method earlier digs out silt with dredging boat, then replaces and fills in the high crushed stone of strength, but due to water The fluidity of the silt is high, the strength is extremely low, and the silt is easy to flow back during excavation, and the foundation pit is difficult to form. This method is slow in construction and is only practical for shoal embankments with a small silt thickness; 2. Explosive compaction , this method does not remove the silt, directly throws stones into the silt, and then blasts and rams the top surface of the riprap, using the pressure generated by the explosion to cause the stones to sink to achieve the purpose of squeezing the soft soil silt, but This technology consumes a lot of explosives and the depth of silting usually only reaches 2-4m, so the application range is narrow; 3. Explosive silting technology, Chinese patents No. ZL03119314.5, ZL97125894.5 and ZL201110070978.1 This technology has been explained in detail. The main principle is to arrange the group of explosives at a certain depth below the head of the dike, and use the cavity generated by the explosion to cause the gravel to slide into the cavity under the action of its own weight, so as to achieve Compared with the previous two methods, the explosive silting technology has the advantages of convenient and fast construction and significant economic benefits. It has been widely used in coastal soft foundation treatment, but this method also has shortcomings, such as When the embankment is filled in the longitudinal direction, the silt at the head of the embankment is easy to accumulate and bulge at the head of the embankment under the action of the displacement of the gravel and the explosive load, which affects and hinders the further filling of the embankment. Secondly, when the thickness of the silt is large, in order to make a Blasting can reach the designed displacement depth, which requires a large amount of explosives, which is not only costly, but also causes great damage to the surrounding ecological environment

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