SU1305365A1 - Method of preventing bulging of soil - Google Patents

Abstract

The invention relates to the mining industry, can be used in the construction of horizontal and inclined mine workings. The purpose of the invention is to reduce the cost and labor-intensiveness of work on the prevention of soil heaving. Unloading holes are drilled into the soil of the mine workings at a separate stop. They are charged with blasts of blasted substances and brewed, ensuring the release of 20–30% of the volume of destroyed rock into the mine. Then, the ejection rock is removed to the design mark of the soil and the rocks unloaded from the stresses are strengthened by pouring the bonding solution into the voids. For uniform and high-quality distribution of the fastening solution throughout the depth of the blasted run-in on the soil surface, a vibrating plate is installed and surface vibrations of the blasted rocks are carried out. Fill and vibrate should be done until the solution pours out onto the soil surface throughout the entire entry. 2 CPUs. with S (L with about JV CO O5 ate

Description

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11305365

This invention relates to the mining industry and can be used in the construction of horizontal and inclined mine workings.

The purpose of the invention is to reduce the cost and labor-intensiveness of work on the prevention of soil heaving.

Figure 1 shows the hearth development, cross section; figure 2 - section aa in Fig, 1.

The method is carried out as follows.

Into the soil 1 of the mine workings, unloading holes 2 are drilled at a separate gate and, after charging them with explosives, loosening, explode, ensuring the release of from 20 to 30% of the blasted rock to the mine. Rock ejection of less than 20% of the total volume makes it difficult to fill all cracks and voids with gravity by bonding mortar, leads to a decrease in the quality of the reinforcement, and when rock is ejected more than 30% of the blasted rock volume, the bonding mortar unnecessarily increases and development, which requires measures for their additional fastening.

Blown rock 3 rises above the design mark of the soil 1 in compact bulk 4, which is removed by the loading machine to the design mark of the soil 1. The prepared bonding solution of a liquid consistency, providing its high mobility, is delivered to the work site.

25

thirty

unevenness of the soil surface, and thicker thickening leads to an unjustified increase in the labor intensity of the work.

As a result, in the soil 1, the rock-concrete return arch 6 forms a high load-carrying capacity of the rocks unloaded from stresses and reinforced with a fastening solution, which can completely prevent the underlying soil from swelling in the direction of development.

If the development is carried out by drilling and drilling, and in soil 1 there are weak rocks prone to intense disintegration and swelling, the relief holes 2 drill during the development period directly near the bottom 7, combining their drilling and drilling with drilling and blasting. 8 on 7 working out. The cleaning of pockets from the mine generation and pile 4 of the rocks from explosions of loosening charges in the unloading holes 2 are made jointly.

After stripping the soil, the reinforcing mortar is poured into the loosened rocks of the 3 soil mines, combining this operation with the process of fixing the mines and ending before drilling the holes 8 in the back 7, thereby ensuring the sealing of the soil rocks from moisture penetration into it formed during the drill35 of the research institute of holes B with washing, and also blowing out and uncovering of the unloaded rocks by 3 external agents is prevented. The process of pouring is dissolved in cracks and voids of the blasted-in., Р is accompanied by surface vibri-species 3. For uniform and high-quality, finish and finish with the device

SCREW J

to spread the fastener

mortar throughout the depth of the exploded

visits to the surface of the soil by setting- Thus, all operations

to combat heaving, they are performed as part of the tunneling cycle and in the soil of excavation, thereby creating, with entry points, 10 moshny rock-concrete structure, and the rate of construction

vibroplatform is poured and surface vibrations of the blasted rocks are performed. Filling and vibrating should be done right up to the solution pouring out over the soil surface during the whole step. In order to create a reinforced layer on the soil surface to protect the rocks from penetration of technical moisture, a thickness of 0.03-0.05 m thick is made of thick consistency from a mortar solution. Lower thickness thickness due to accidental damage and cracks does not provide reliable isolation of soil rocks from moisture penetration and does not cover all

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ki are not reduced.

Claims (1)

Invention Formula A method for preventing soil heaving, which includes drilling drilling holes into the soil, charging and blasting them, followed by strengthening of the rocks unloaded from the stresses with a bonding solution, which distinguishes five 0 five 0 unevenness of the soil surface, and thicker thickening leads to an unjustified increase in the labor intensity of the work. As a result, in the soil 1, the rock-concrete return arch 6 forms a high load-carrying capacity of the rocks unloaded from stresses and reinforced with a fastening solution, which can completely prevent the underlying soil from swelling in the direction of development. If the development is carried out by drilling and drilling, and in soil 1 there are weak rocks prone to intense disintegration and swelling, the relief holes 2 drill during the development period directly near the bottom 7, combining their drilling and drilling with drilling and blasting. 8 on 7 working out. The cleaning of pockets from the mine generation and pile 4 of the rocks from explosions of loosening charges in the unloading holes 2 are made jointly. After stripping the soil, the reinforcing mortar is poured into the loosened rocks of the 3 soil mines, combining this operation with the process of fixing the mines and ending before drilling the holes 8 in the back 7, thereby ensuring the sealing of the soil rocks from moisture penetration into it formed at the drill5 of the research institute of holes B with washing, and also blowing out and uncovering of the unloaded rocks by 3 external agents is prevented. The process of pouring the solution is not reduced. „ 55 Invention Formula A method of preventing soil stumps, including drilling holes in the soil, drilling them and blasting, followed by strengthening of strained rocks from the stresses with a bonding solution, characterized in that with a reduction in the cost and difficulty of works, blasting explosives produced with an emission of 20-3 (% of the volume of the destroyed rock, L   ff  -tch I V g v s, solution. l iOS-3f) 54 then the ejection rock is removed, and the hardening of the rock is performed by pouring into the hollows the bonding  /// /// /// /// /// /// /// /// //, /// / X / v /// X w / o v X w / o Editor P.Geershi Compiled by L. Berezkina Tehred A. Kravchuk Order. 1407/31 Circulation 455 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 .2 Proofreader L. Patay