CN85106979A - Natural and the following method of cheating current in cave, the tunnel in artificially of shutoff - Google Patents

Abstract

The invention relates to shutoff and under natural and artificially, cheat the method for flow velocity height in cave, duct type tunnel and the tunnel type tunnel, current that flow is big.Method of the present invention is characterised in that is indicating the tunnel type tunnel of wanting shutoff or the location in duct type tunnel, and at the upstream end with the stifled despot of half of known method preparation, accumulated solids particle bulk cargo has exploded it with explosive and to be suspended in the current; After the concentration of the solid material that suspends reaches choked flow, promptly built up shutoff in shutoff place, strengthen the shutoff plug with the mode of cast fast.

Description

Natural and the following method of cheating current in cave, the tunnel in artificially of shutoff

The invention relates to the method for the current that flow velocity height, the flow in hole cave, duct type and the tunnel type tunnel is big under natural and the artificially.

Designed the some kinds of methods by current in the passage of this class qualification section of borehole sealing pipeline, tunnel and mine working, this is a well known fact.

In known method, normally cram whole cross-sections of river of current with thick block of material, with the dynamic action that prevents water stream material is washed away.The shortcoming of these methods is along with the dwindling of active cross-section, thereby makes flow velocity increase very highly, and under the situation of the restriction of the size that the granularity of sandstone is holed, sandstone can be washed away by current.

The examples of implementation of many said methods in relevant handbook, have been published, for example: the mining engineering handbook that U.S. Mining Engineer association compiles, New York, 1978,26 joints, second trifle, 42-48 page or leaf; This treats your clumsy moral card: water-plugging technique in mine and similar structures body, Leipzig (Strzodka:Hydroechnic im Bergbau und Bauwesen, Leipzig) 245-255 page or leaf in 1975 and bur Praxair knob: comprehensive enclosure method (Kompleksnuj metod tamponazsa pri strooityelsztve saht) Moscow " Ni Gula " publishing house (Nyedra) 3-13 page or leaf in 1984 in the mine construction; KalmuKov:Borba Szvroyezapnumi Provurami vodu vgornuje vurabotki moscw " Nyedra ", 1973, the 131-189 pages or leaves.

In known method, after the preliminary treatment, then be devoted to low-density, granularity are injected active cross-section less than the material of shutoff slot.Realize this step, be subjected to being used to cramming or the restriction of the mouth neck of the boring of feeding always that this point has shown a shortcoming of this method just.

Another shortcoming of said method is in this way, assembles with the solid sandstone and stops up whole active cross-section, and it is little to resemble the filter type obstruction stifled bit traffic, the current that flow velocity is low.

The filter type obstruction of making by described method with the scattered seed solid material needs to strengthen usually.According to prior art, be to strengthen, or inject gelatinous mass by current and strengthen by the boring cast, weaken current temporarily to block on current or the certain degree.Weaken after the current, add granular material again,, pour into a mould granular material afterwards so that sectional space is filled up.

The fluid-tight shutoff stopper that adopts known method to form has temporary transient character; Under its protective effect, adopt by boring and fill chamber, and then in hydrostatic, build up final water blockoff structure with the mode of cast.

Also have some methods in addition with the same temporary transient obstruction current of aforementioned character, the process of these methods comprises by boring or vertical shaft a kind of plugging device is installed in the pipeline or tunnel that section limits, this device expands therein, and for example, rubber balloon is exactly this class device.Utilize the protective effect of this device, in hydrostatic, make final water blockoff structure.Though the shortcoming of these class methods is to be successfully used under the leak stopping situation of the big but pipeline that pressure reduction is very low in the very little pipeline in aperture or aperture.

The objective of the invention is to overcome above-mentioned deficiency, that is: improve this class methods, make it shutoff pour in natural and following hole, artificially cave, the big current of flow velocity height, flow in duct type or the tunnel type tunnel.The method is characterized in that high a lot of of efficient than known solution.

By the fixed task of the present invention is that a kind of employing of development prepares interim shutoff stopper; and again under its protective effect; set up permanent water blockoff structure in the water under stagnating again, the natural and artificially of adopting this mode will pour in big section is cheated the method that the big current of flow velocity height, flow in cave, duct type and the tunnel type tunnel stop up down.

The present invention is based on such understanding: if with granularity less than the granular solids material that seals the aperture, produce the solid material of high concentration by means of the dense poly-of the main quality of the solid matter that is filled stream, this material pressed prepares the place stopped up in the cavity body of filling out hole cave under natural and artificially, fixed task can solve.

According to the present invention, to decide task be to solve like this, to stop up the location with what the loose granule solid material was deposited in tunnel type or duct type tunnel, sandstone has been exploded with the mode of exploding by the stifled despot's of half of known method preparation upstream end and to be suspended among the current, the concentration of filling solid material reaches after the degree that can block current, the obstruction of shutoff place is promptly finished, and strengthens the shutoff plug with the mode of cast fast then.

One of the inventive method embodiment preferably is to insert by boring to fill solid material and blast.

In order to strengthen effect, in being about to detonate, near blast place, add the powdery solid material to increase the density of water flow medium.

According to the present invention,, then be considered to suit if in being about to detonate, add gelling agent to increase the viscosity of water in blast area.

We will also describe the present invention in detail in conjunction with the accompanying drawings with the embodiment preferably as example.

Fig. 1 represents the operating procedure of a kind of mode of the inventive method,

Fig. 2 represents the operating procedure of the another embodiment of the inventive method.

The process of the inventive method at first is by inserting granule filling material, cast is subsequently strengthened the so known method of medium own and is prepared the stifled despot of half, still leave the active cross-section that narrows down between the stifled despot of this half and tunnel or pipeline top, this is to use known technology shutoff again.

In second operating procedure, if make a call to one or talk about a plurality of borings easily, in order to load filler at upstream end.The explosive that to suitably tie up by holing is arranged on the bottom of tunnel or pipeline; The granularity of the selection of time filler of the required granular filler sedimentation of foundation is deposited in this granular filler the limit of the bottom of tunnel or pipeline up to the flow condition permission.

In the 3rd operating procedure, by suitably selected scheme program detonating charge, filler can have been exploded with current, owing to considered the time of its sedimentation during the granularity of selection particle, so most of granular filler just settles down up to shutoff place, the current that flow to shutoff place have carried a large amount of solid materials that enough plays ponding.

In the 4th operating procedure, from that time of blocking, promptly pour into a mould strengthening material, to strengthen granular filler to the obstruction of shutoff place.

Under the protection of the temporary blocking plug of building up by the inventive method, in hydrostatic, prepare final plugging structure with known method.

At one preferably in the embodiment of the present invention, if be stable rock all around, the stifled despot of half can reduce with the mode that explosion chamber pushes up with space between the top, hole.

Can fill out additive, for example, blanc fixe or can temporarily increase the viscosity of water and form the reactant of gel is regulated the sedimentation time after the filler particles blast, and it is controlled at 5-15 between second.

Fig. 1 and Fig. 2 represent two of the inventive method embodiments preferably respectively.

The plane 2 times that Fig. 1 detail drawing a is illustrated in mine working 1 prepares the stifled despot 4 of half, the situation that representative can reach with known method with common method.In shutoff place 5, the flow rate of water flow on the stifled despot 4 of half is increased to the degree that any filler all can be washed away of inserting.This stage is represented the initial period of the inventive method.

Detail drawing b represents the operating procedure of the inventive method.At first cram material in order to insert in stifled despot's upstream end hole 6 of drilling.At known explosive method of the bottom of boring itself, explode into the bell of an expansion afterwards.The method according to this invention by filler boring, is sent into the explosive 8 of proper volume, sets, and 6 inserts building stones 9 by holing afterwards, reaches the maximum space filling extent.

In case the material of inserting can be increased the current of flow velocity when washing away fully, filling step can come to an end.

The proportion of filler and grain graininess should be selected like this, and under the mean flow rate of the whole section of the mine working 1 that stops up corresponding to need, the building stones 9 that explode should be able to be flushed to shutoff place 5 by current under what is called is forbidden setting condition.

Detail drawing c represents the situation after the ignition charge 8, and under the effect of blast, building stones 9 major parts of inserting are suspended state, are flushed to shutoff place by current.

Detail drawing d among Fig. 1 represents the end step of the inventive method.Flow to shutoff place 5 in case contain the inserts of solid material as much as possible in the composition, form to stop up, inject by boring 3 immediately and solidify sealing materials 10,6 add a large amount of packing materials again by holing simultaneously to strengthen the obstruction of setting up like this.Insert curing sealing material 10 by hole 6 after inserting building stones 9.

In the implementation process of method shown in Figure 1, exploded the sedimentation time of the filling building stones 9 that are suspended from the current for hangfire, can before blast, add powder additive by boring 6, as blanc fixe, or the gelled fluid that can regulate of full-bodied gelling formation time, as acrylic amide (acrylamides), to increase the density of water.

The mode that the active cross-section of shutoff place 5 reduced with explosion of the possible embodiment of another the inventive method-promptly be specifically as can see from Figure 2.As the detail drawing a of Fig. 2 and figure b shown in respectively like that, 6 explosive 8 put down by holing, insert afterwards and fill building stones 9.Put into explosive 8 simultaneously in boring 3, explosive 8 is put in the hole 11 of can drilling again if necessary.

Other operational phase of the inventive method all is shown among Fig. 2.According to suitable scheme program, the explosive 8 of the stifled despot of the half that at first can detonate 4 tops, the explosive 8 of holing subsequently below 6 detonates again.Fill building stones in this way and be flushed to the puffs that replace shutoff place 5 by current.

Form after the described obstruction, we can be by the method operation shown in the detail drawing c of the detail drawing d of Fig. 1 and Fig. 2.

With known solution relatively, the advantage of the inventive method is even also can clogging current in the big situation of flow velocity height, flow.

Claims (6)

1, the natural and artificially of the shutoff method of flow velocity height in cave, duct type tunnel and the tunnel type tunnel of hole, current that flow is big down, it is characterized in that the location of wanting shutoff indicating, upstream end the stifled despot of the half of pressing known method preparation is piled up the loose granule solid material, adopts the blast mode that material has been exploded and is suspended among the current; The concentration of the solid material that suspends reaches after the degree that can block, adopts the mode of pouring into a mould fast to strengthen the shutoff plug that forms in shutoff place.

2, the described method of claim 1 is characterized in that inserting filling solid material and explosive by boring.

3, the described method of claim 1 is characterized in that adding the density that the powdery solid material increases water flow medium near blast area.

4, the described method of claim 1 is characterized in that adding the reactant that can form gel in blast area in being about to detonate, to increase the viscosity of water.

5, the described method of claim 1 is characterized in that adopting the mode on explosion chamber top to reduce the stifled bulk of seizing by force top shutoff place of half.

6, any described method among the claim 1-4, it is characterized in that adopting by boring put into filling the rubber pocket of low-gravity solid pieces of material reduce the stifled despot of half and go up the bulk of shutoff place.

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