SU773199A1 - Method of lowering a cased well into ground - Google Patents

Description

(54) METHOD FOR DIVE SUPPORTING WELLS

In soil

one

The invention relates to the construction and can be used in the construction of foundations and underground structures by means of a pit well.

There is a method of lowering the well by excavating the soil from under the blade part with the organization of fixed zones developed during the landing of the well 1.

However, this method does not ensure the verticality of the lowering of wells, due to the different physicomechanical characteristics of the soils lying beneath the blade part.

The closest in technical essence to the present invention is a method of immersion of a drop well in the ground, including alternate development of the ground from under the knife part and lowering with fixing the position of the lower well before the next development of the soil by attaching the adjustable consoles to the lower well and resting them on supporting devices which is that a sandy prism is poured at the well, after which the installation is made on the lowering well supported on the collar prism, and the lowering of the well every time

by disassembling the sandstone prism 2.

The verticality of the descent according to this method depends mainly on the synchronous operation of mechanisms engaged in disassembling sand prisms at the well, which is very difficult to achieve. In addition, the filling of sand prisms and their disassembly are very labor-intensive processes that require long-term use of earth masks and mechanisms.

10 The purpose of the invention is to increase the reliability of maintaining the vertical position of the well during the immersion process and to facilitate the production of works.

This is achieved by the fact that in a known method of sinking a drop well into the ground, which includes alternating development of the soil from under the knife part and lowering with fixing the position of the drop well, before the next development of the soil by attaching to the drop well

Claims (2)

20 relocatable consoles and resting them on the supporting devices before starting the development of the soil around the subsidence well, piles with tips, on which the stops and jacks are installed, are driven into the ground. moreover, fixing the position of the lowering pack before the next development of the soil is carried out by leaning the adjustable cantilevers on the jacks, and during the development of the soil the jacks are lowered to the bearing of the cantilevers on the stops. FIG. 1 shows a drainage well, section: FIG. 2 shows section A-A in FIG. 1. A distance of 150–200 mm from the external surface of the lowering well 1 is driven in by piles 2. A head 3 is installed on each pile, having two stops 4 (see Fig. 2) between the stops is a jack 5, which abuts the lower console 6 through removable bolt 7. As the ground develops, the lower console 6 sits on the supports 4 from under the knife and lowering the jack 5, then the bolt 7 is rearranged to the upper console 8 and the jack rests on it, releasing the lower console from the load 6. Lower console 6 is freed from bolting 9, installs c under the upper console 8 and fastened with bolts 10. This cycle is repeated until the well is lowered to the design mark. To ensure that the well shell is evenly immersed in the ground, the oil pressure is controlled simultaneously in all jacks. For this, all the jacks are connected via metal tubes (not shown) to the oil pump station (not shown). With the help of this station all the jacks are lowered at the same time, which ensures the vertical position of the lowering well. The use of the invention will improve the reliability of maintaining the vertical position of the well in the process of immersion and will facilitate the work by eliminating labor-intensive operations for filling and disassembling sandy prisms. Formula of the invention A method of immersion of a drop well in the ground, including alternate development of soil from under the blade part and lowering with fixation of the position of the lowering well before the next development of the soil by attaching the adjustable consoles to the lowering well and resting them on supporting devices, characterized in that the purpose of increasing the reliability of maintaining the vertical position of the well in the process of immersion and facilitating the production of works, before starting the development of the soil around the lower well, in the soil piles with ogolovka.mi, on which the stops and jacks are installed, the fixation of the position of the drop well before the next development of the soil is carried out by leaning the adjustable consoles on the jacks, and in the development of the soil the jacks are lowered to the supports of the consoles on the stops. Sources of information taken into account in the examination 1. Chetvernin L. A. Design, calculation and design of water and sewer sinking facilities, Moscow, MKH RSFSR, 1953. 2. USSR author's certificate number 617527, cl. E 02 D 7/26, 1976. one -eleven y; l TO Jl W / 77 @ i. s / g -6 -9 H Jl