JPH0516499B2 - - Google Patents
Info
- Publication number
- JPH0516499B2 JPH0516499B2 JP14612486A JP14612486A JPH0516499B2 JP H0516499 B2 JPH0516499 B2 JP H0516499B2 JP 14612486 A JP14612486 A JP 14612486A JP 14612486 A JP14612486 A JP 14612486A JP H0516499 B2 JPH0516499 B2 JP H0516499B2
- Authority
- JP
- Japan
- Prior art keywords
- carbon dioxide
- dioxide gas
- pressure
- mixing chamber
- water glass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 162
- 239000001569 carbon dioxide Substances 0.000 claims description 81
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 81
- 238000002347 injection Methods 0.000 claims description 36
- 239000007924 injection Substances 0.000 claims description 36
- 239000000126 substance Substances 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 19
- 238000007664 blowing Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 235000019353 potassium silicate Nutrition 0.000 description 30
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 30
- 239000007864 aqueous solution Substances 0.000 description 14
- 238000003860 storage Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は主として水ガラス系固結薬液等のア
ルカリ性地盤注入材と炭酸ガスとの混合液からな
る地盤注入薬液の製造方法に係り、詳しくは軟弱
地盤または漏水地盤等の地盤に注入して地盤固結
または止水を図る地盤注入薬液の製造方法に係
り、特に加圧炭酸ガスの絶対量の制御を簡素化
し、混合室内圧力の許容範囲内で水ガラス水溶液
に対する炭酸ガス量を一定比率で混合し得ること
はもちろん、連続製造し得る地盤注入薬液の製造
方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention mainly relates to a method for producing a ground injection chemical solution consisting of a mixture of an alkaline ground injection material such as a water glass-based solidified chemical solution and carbon dioxide gas. This relates to a method of manufacturing a ground injection chemical solution that is injected into soft ground or water leaking ground to solidify the ground or stop water, and in particular simplifies the control of the absolute amount of pressurized carbon dioxide gas and makes it within the permissible range of mixing chamber pressure. This invention relates to a method for producing a chemical solution for ground injection, which not only allows mixing the amount of carbon dioxide gas to a water glass aqueous solution at a constant ratio, but also enables continuous production.
従来、水ガラス等のアルカリ性地盤注入材と、
硬化剤としての炭酸ガスとからなる薬液を軟弱ま
たは漏水地盤中に注入して地盤の固結または止水
を図る薬液注入技術が提案されている。
Conventionally, alkaline ground injection materials such as water glass and
A chemical injection technique has been proposed in which a chemical solution consisting of carbon dioxide gas as a hardening agent is injected into soft or leaky ground to solidify the ground or stop water.
一般に、水ガラス水溶液と炭酸ガスを混合室内
で混合して地盤注入薬液を製造するに際し、水ガ
ラス水溶液に対して混合すべき炭酸ガスを絶対量
でほぼ一定割合で供給しなければこれを地盤内に
注入したときに均一な水ガラスの固結体が形成さ
れない。この理由については混合室内の圧力が変
化すると、圧入すると炭酸ガス量が大幅に変動し
て水ガラスとの比率が一定しなくなり、水ガラス
と炭酸ガスの反応によつて生成する膠質状物にム
ラを生じ、均一な固結体が得られないことが指摘
されている。 Generally, when mixing a water glass aqueous solution and carbon dioxide gas in a mixing chamber to produce a chemical solution for ground injection, it is necessary to supply the carbon dioxide gas to be mixed with the water glass aqueous solution in an almost constant absolute amount. No uniform water glass concretions are formed when injected into the water. The reason for this is that when the pressure inside the mixing chamber changes, the amount of carbon dioxide gas changes significantly when it is pressurized, and the ratio with water glass becomes inconsistent, causing unevenness in the colloid-like substance produced by the reaction between water glass and carbon dioxide gas. It has been pointed out that this occurs and a uniform solidified body cannot be obtained.
上述の問題の解決策の一環として、特公昭59−
42769号公報に見られる薬液注入装置が提案され
るに至つた。この提案された装置は、「地盤中に
挿入された注入管と、前記注入管内に連結された
水ガラス貯槽と、前記注入管内に連結された炭酸
ガス貯槽とを備えた薬液注入装置において前記炭
酸ガス貯槽と前記注入管との間に圧力変動感知装
置を設けたことを特徴とし、前記圧力変動感知装
置は前記注入管と前記炭酸ガス貯槽との間に下流
へ向かつて順次自動流量調節弁と、差圧伝送器お
よび開閉演算器を経て流量指示調節器に連絡され
た流量計と、グラフイツク演算器を経て同じく前
記流量指示調節器に連絡された圧力伝送器とが連
絡されてなり、前記両演算器の演算結果に基づき
前記流量指示調節計が前記自動流量調節弁を作動
させることによつて炭酸ガスの絶対流量を制御
し、水ガラス水溶液と炭酸ガスの絶対流量を一定
比率で合流して注入する」ことにある。 As part of the solution to the above-mentioned problem,
A chemical liquid injection device as seen in Publication No. 42769 was proposed. This proposed device is a chemical injection device that includes an injection pipe inserted into the ground, a water glass storage tank connected to the injection pipe, and a carbon dioxide gas storage tank connected to the injection pipe. The invention is characterized in that a pressure fluctuation sensing device is provided between the gas storage tank and the injection pipe, and the pressure fluctuation sensing device is arranged between the injection pipe and the carbon dioxide gas storage tank and sequentially connects an automatic flow rate control valve toward the downstream. , a flow meter connected to the flow rate indicating regulator via a differential pressure transmitter and a switching calculator, and a pressure transmitter also connected to the flow rate indicating regulator via a graphic computing unit, Based on the calculation result of the calculator, the flow rate indicating controller controls the absolute flow rate of carbon dioxide gas by operating the automatic flow rate control valve, and the absolute flow rates of the water glass aqueous solution and carbon dioxide gas are combined at a constant ratio. It is about "injecting".
さらに、炭酸ガスの充分な量を散逸することな
く水ガラス水溶液に溶解させる技術として、密閉
耐圧容器中に水ガラスを高圧に保ちながら反応さ
せる方法、あるいは密閉耐圧構造のスプレー塔で
反応させる方法、霧吹式の流体ノズルを用いて反
応させる方法等も提案されている。 Furthermore, as a technique for dissolving a sufficient amount of carbon dioxide into a water glass aqueous solution without dissipating, there is a method in which water glass is reacted while being kept at high pressure in a sealed pressure-resistant container, or a method in which the reaction is carried out in a spray tower with a sealed pressure-resistant structure. A method of reacting using a spray-type fluid nozzle has also been proposed.
ところで、上述前者の注入装置は炭酸ガス貯槽
と注入管との間に圧力変動感知装置を設けること
によつて、地盤圧（Kg/cm2）の変動にかかわらず
水ガラス水溶液と炭酸ガスの絶対流量を一定比率
で合流させて地盤中に注入することを可能とする
利益をもたらすことができる。しかしながら、実
践の場においては、地盤圧の変動を感知し、加圧
炭酸ガス量を地盤圧に対応させて圧送するための
制御システムが複雑化されるために制御システム
の設備費が嵩み、かつ各制御要素の性能チエツク
および管理、維持に細心の運転管理を必要とする
実用上の問題がある。
By the way, the former injection device described above has a pressure fluctuation sensing device installed between the carbon dioxide gas storage tank and the injection pipe, so that the absolute amount of water glass solution and carbon dioxide can be maintained regardless of fluctuations in ground pressure (Kg/cm 2 ). This can provide the benefit of allowing flow rates to be combined and injected into the ground. However, in practice, the control system that senses changes in ground pressure and pumps the amount of pressurized carbon dioxide in response to the ground pressure is complicated, which increases the equipment cost of the control system. Furthermore, there is a practical problem that requires careful operation management to check, manage, and maintain the performance of each control element.
さらに後者の技術においては、いずれも反応を
充分に行わせることは可能であつても、これによ
つて得られ薬液は密閉容器中でゲル化してしまう
ため、これをポンプで地盤に浸透注入させること
は難しく、実用的ではない。 Furthermore, in the latter technique, although it is possible to carry out the reaction sufficiently, the resulting chemical solution will gel in a closed container, so it must be injected into the ground using a pump. This is difficult and impractical.
特に密閉容器中に水ガラスと炭酸ガスを供給す
ると容器内圧力が上昇し、圧力の変化に対する水
ガラスと炭酸ガスの体積変化が異なるので水ガラ
スと炭酸ガスを正確な量で混合することは困難で
ある。 In particular, when water glass and carbon dioxide gas are supplied into a sealed container, the pressure inside the container increases, and the changes in volume of water glass and carbon dioxide gas differ in response to changes in pressure, making it difficult to mix water glass and carbon dioxide gas in accurate amounts. It is.
本発明の目的は加圧炭酸ガスの絶対流量の制御
を簡素化し、混合室内圧力の許容範囲内で水ガラ
ス水溶液に対する炭酸ガス量を一定比率で混合さ
せるのみならず、連続製造が可能であつて、前述
の公知技術に存する問題点を解決した地盤注入薬
液の製造方法を提供することにある。 The purpose of the present invention is to simplify the control of the absolute flow rate of pressurized carbon dioxide gas, and to not only mix the amount of carbon dioxide gas to the water glass aqueous solution at a constant ratio within the allowable range of the mixing chamber pressure, but also to enable continuous production. The object of the present invention is to provide a method for manufacturing a chemical solution for ground injection, which solves the problems of the above-mentioned known techniques.
前述の目的を達成するため、本発明によれば、
開放された吐出口を有する混合室内にアルカリ性
地盤注入材を加圧供給するとともに炭酸ガスを炭
酸ガス吹出ノズルを通して加圧供給してこれら注
入材ならびに炭酸ガスを前記混合室内で加圧混合
し、得られる混合液を前記開放された吐出口から
連続して吐出して地盤注入薬液を連続的に製造す
ることを特徴とする。
In order to achieve the aforementioned object, according to the present invention:
The alkaline ground injection material is supplied under pressure into a mixing chamber having an open discharge port, and carbon dioxide gas is supplied under pressure through a carbon dioxide gas blowing nozzle, and these injection materials and carbon dioxide are mixed under pressure in the mixing chamber, and the resulting mixture is obtained. The method is characterized in that the ground injection chemical solution is continuously produced by continuously discharging the mixed liquid from the open discharge port.
以下、前述の本発明を添付図面に用いて詳細に
説明する。 Hereinafter, the above-described present invention will be explained in detail with reference to the accompanying drawings.
第１図は本発明方法の基本概念を示す図であつ
て、図中１はアルカリ性地盤注入材としての水ガ
ラス水溶液貯槽、２はポンプ、３は流量計であ
る。水ガラス水溶液は、ポンプ２によつて定めら
れた流量で送液されて流量計３を通して配管４に
より混合室５内に加圧供給される。以上は前記従
来の薬液注入装置の水ガラス注入系路と同様であ
る。ここで水ガラス水溶液貯槽１から混合室５を
含む管路を注入材送液管路という。 FIG. 1 is a diagram showing the basic concept of the method of the present invention, in which 1 is a water glass aqueous solution storage tank as an alkaline ground injection material, 2 is a pump, and 3 is a flow meter. The water glass aqueous solution is fed at a predetermined flow rate by a pump 2, passes through a flow meter 3, and is supplied under pressure into a mixing chamber 5 through a pipe 4. The above is the same as the water glass injection system of the conventional chemical liquid injection device. Here, the pipe line from the water glass aqueous solution storage tank 1 to the mixing chamber 5 is referred to as the injection material delivery pipe line.
混合室５は底部に開放された吐出口６を有し、
この吐出口６の大きさはしぼりバルブ６′の操作
により自由に調整される。 The mixing chamber 5 has a discharge port 6 open at the bottom,
The size of the discharge port 6 can be freely adjusted by operating the throttle valve 6'.
一方、炭酸ガス高圧容器７の口金に配管８が接
続され、この配管の未端部は混合室５に連結され
るが、配管４に連結されてもかまわない。配管８
の管路上に減圧弁９と、円板１０ａの中心部にノ
ズル孔１０ｂを穿つた炭酸ガス吹出ノズル１０が
設けられて薬液製造装置が構成される。 On the other hand, a pipe 8 is connected to the cap of the carbon dioxide gas high-pressure container 7, and the end of this pipe is connected to the mixing chamber 5, but it may be connected to the pipe 4. Piping 8
A chemical liquid manufacturing apparatus is constructed by providing a pressure reducing valve 9 on a pipe line and a carbon dioxide gas blowing nozzle 10 having a nozzle hole 10b in the center of a disk 10a.
上述の装置により水ガラス水溶液は混合室５に
加圧供給され、さらに、炭酸ガスもまた炭酸ガス
吹出ノズル１０を通して混合室５に加圧供給さ
れ、混合室５内で炭酸ガスと水ガラス水溶液が加
圧混合される。 The water glass aqueous solution is supplied under pressure to the mixing chamber 5 by the above-mentioned device, and carbon dioxide gas is also pressurized and supplied to the mixing chamber 5 through the carbon dioxide gas blowing nozzle 10, and the carbon dioxide gas and the water glass aqueous solution are mixed in the mixing chamber 5. Mixed under pressure.
本発明では前記混合に際して炭酸ガスのガス圧
と炭酸ガス吹出ノズル１０の孔径とを任意に変更
して組み合わせることにより混合室内の圧力に対
応する炭酸ガス吹出量を定め、これにより前記ア
ルカリ性地盤注入材と炭酸ガスとを一定の比率で
混合し得る。しかも混合室には開放された吐出口
を有し、ここから混合液が連続的に吐出されるた
め密閉容器のように混合室内圧力が異常に上昇す
ることがない。 In the present invention, during the mixing, the carbon dioxide gas pressure and the hole diameter of the carbon dioxide gas blowing nozzle 10 are arbitrarily changed and combined to determine the carbon dioxide gas blowout amount corresponding to the pressure in the mixing chamber, and thereby the alkaline ground injection material and carbon dioxide gas at a certain ratio. Moreover, since the mixing chamber has an open discharge port from which the mixed liquid is continuously discharged, the pressure in the mixing chamber does not rise abnormally unlike in a closed container.
前記炭酸ガスのガス圧は減圧弁９の操作により
任意に変更され、また前記孔径は炭酸ガス吹出ノ
ズル１０をノズル孔径の異なつたものに取り換え
ることにより任意に変更される。 The gas pressure of the carbon dioxide gas can be arbitrarily changed by operating the pressure reducing valve 9, and the hole diameter can be arbitrarily changed by replacing the carbon dioxide gas blowing nozzle 10 with one having a different nozzle hole diameter.
混合室５内で得られた混合液はしぼりバルブ
６′によつて任意の大きさに開放された吐出口６
から受槽１３に吐出されて地盤注入薬液が連続的
に製造される。 The mixed liquid obtained in the mixing chamber 5 passes through a discharge port 6 opened to an arbitrary size by a squeeze valve 6'.
The ground injection chemical solution is continuously produced by being discharged from the tank 13 into the receiving tank 13.
次に作用を第２図および第３図の実験結果を図
表化した図に基づいて説明する。
Next, the operation will be explained based on FIGS. 2 and 3, which are graphs of experimental results.
第２図は、円板（板厚３mm）の中心部に0.8mm
のノズル孔径を穿ち、炭酸ガス圧35、30、25Kg/
cm2と炭酸ガス吹出量との関係を示す図であり、設
定炭酸ガス圧において炭酸ガス吹出量（ｇ／
min）は、ある範囲内で一定の流量となり、ある
限界点で炭酸ガス吹出量は漸次減少していくこと
が判る。したがつて、混合室内の圧力に対応する
炭酸ガス吹出量は炭酸ガス圧をかえることによつ
て制御することができる。 Figure 2 shows 0.8mm in the center of the disk (thickness: 3mm).
With a nozzle hole diameter of 35, 30, 25 kg/
It is a diagram showing the relationship between cm 2 and the amount of carbon dioxide gas blown out, and shows the amount of carbon dioxide gas blown out (g/
min) is a constant flow rate within a certain range, and it can be seen that the amount of carbon dioxide gas blown out gradually decreases at a certain limit point. Therefore, the amount of carbon dioxide gas blown out corresponding to the pressure inside the mixing chamber can be controlled by changing the carbon dioxide pressure.
炭酸ガス圧は減圧弁によつて任意に変えること
ができる。 The carbon dioxide pressure can be changed arbitrarily using a pressure reducing valve.
第３図は、炭酸ガス圧を一定（35Kg/cm2）にし
てノズル孔径を変化した場合の炭酸ガス吹出量と
の関係を示す図であつて、ノズル孔径を異にした
炭酸ガス吹出ノズルを数個組合わせることによつ
て、混合室内圧力に対応する炭酸ガス吹出量を任
意に制御することが可能となる。 Figure 3 is a diagram showing the relationship between carbon dioxide gas blowing amount when the nozzle hole diameter is changed while keeping the carbon dioxide gas pressure constant (35 kg/cm 2 ), and shows the relationship between carbon dioxide gas blowing nozzles with different nozzle hole diameters. By combining several units, it becomes possible to arbitrarily control the amount of carbon dioxide gas blown out corresponding to the internal pressure of the mixing chamber.
第３図のＩ線は、ノズル孔径１mmのノズル２個
（ノズル１個の炭酸ガス吹出量450g／min）とノ
ズル孔径0.4mmのノズル（吹出量100g／min）１
個を同時に使用した場合の炭酸ガス吹出量を示
す。 Line I in Figure 3 shows two nozzles with a nozzle hole diameter of 1 mm (carbon dioxide gas blowout amount of 450 g/min per nozzle) and one nozzle with a nozzle hole diameter of 0.4 mm (blowout amount of 100 g/min).
This shows the amount of carbon dioxide gas blown out when both are used at the same time.
また、同図から炭酸ガス圧を一定にした場合に
は、ノズル孔径を異にした炭酸ガス吹出ノズルを
混合室内圧力に対応させて取換えて使用すること
もできる。 Further, as shown in the figure, when the carbon dioxide gas pressure is kept constant, carbon dioxide gas blowing nozzles with different nozzle hole diameters can be replaced and used in accordance with the mixing chamber pressure.
第４図はこの発明の一実施例を示す図であつ
て、水ガラス水溶液貯槽１内に貯えられた水ガラ
ス水溶液はポンプ２によつてその定量が送液され
て流量計３で流量を確認し、配管４を通して混合
室５内に加圧供給される。ポンプ２の吸入側の配
管４に元弁SVが設けられている。６は開口され
た吐出口である。
FIG. 4 is a diagram showing an embodiment of the present invention, in which a fixed amount of the water glass solution stored in the water glass solution storage tank 1 is sent by a pump 2, and the flow rate is confirmed by a flow meter 3. The mixture is supplied under pressure into the mixing chamber 5 through the pipe 4. A main valve SV is provided in the piping 4 on the suction side of the pump 2. 6 is an opened discharge port.
また、液化炭酸ガス高圧容器７，７′，７″の口
金に炭酸ガス圧送配管８が連結され、この配管上
に、元弁SV、加熱器１１、減圧弁９、炭酸ガス
留器１２が設けられ、液化炭酸ガスは加熱器１１
によつて気化炭酸ガスとなつて減圧弁９で所定の
圧力に減圧されて炭酸ガス留器１２内に所定の圧
力で貯えられる。炭酸ガス留器１２の後の配管８
に分岐管８ａ，８ｂ，８ｃ，８ｄが並列に設けら
れ、各分岐管に元弁Ｖ，Ｖ１，Ｖ２，Ｖ３が設け
られると共に炭酸ガス吹出ノズル１０，１０′，
１０″，１０が設けられ、各分岐管は配管８′に
連結され、この配管は炭酸ガス圧送配管８に連結
される。前記配管８の未端部は混合室５に連結さ
れる。圧送される炭酸ガス圧は配管８に設けた圧
力計Ｐ１，Ｐ２によつて確認される。 Further, a carbon dioxide gas pressure-feeding pipe 8 is connected to the caps of the liquefied carbon dioxide high-pressure containers 7, 7', 7'', and a main valve SV, a heater 11, a pressure reducing valve 9, and a carbon dioxide gas distiller 12 are installed on this pipe. The liquefied carbon dioxide gas is heated by the heater 11.
This converts the gas into vaporized carbon dioxide, which is reduced to a predetermined pressure by the pressure reducing valve 9 and stored at a predetermined pressure in the carbon dioxide gas distiller 12. Piping 8 after the carbon dioxide gas distiller 12
Branch pipes 8a, 8b, 8c, and 8d are provided in parallel, and each branch pipe is provided with main valves V, V1, V2, and V3, and carbon dioxide gas blowing nozzles 10, 10',
10'', 10 are provided, and each branch pipe is connected to a pipe 8', which is connected to a carbon dioxide gas pressure-feeding pipe 8. The end of the pipe 8 is connected to the mixing chamber 5. The carbon dioxide pressure is confirmed by pressure gauges P1 and P2 provided in the pipe 8.
上記炭酸ガス吹出ノズル１０，１０′，１０″，
１０はノズル孔径を異にしており、混合室内圧
力に対応する炭酸吹出量を単一の炭酸ガス吹出ノ
ズルまたは二以上のノズルの組合わせによつて制
御して水ガラス水溶液と炭酸ガスの流量を混合室
内５で一定比率で加圧混合され、得られる混合液
は開放された吐出口６から連続的に吐出されて第
１図示のような受槽１３内に地盤注入薬液を連続
的に製造する。 The carbon dioxide gas blowing nozzle 10, 10', 10'',
No. 10 has different nozzle hole diameters, and the flow rate of the water glass aqueous solution and carbon dioxide is controlled by controlling the amount of carbon dioxide blowing corresponding to the pressure in the mixing chamber using a single carbon dioxide gas blowing nozzle or a combination of two or more nozzles. The mixed liquid is mixed under pressure in a mixing chamber 5 at a constant ratio, and the resulting mixed liquid is continuously discharged from an open discharge port 6 to continuously produce a ground injection chemical liquid in a receiving tank 13 as shown in the first figure.
本発明におけるアルカリ性地盤注入材としては
水ガラス水溶液、あるいは水ガラスと反応剤の混
合液、あるいはセメントやスラグを含む注入液等
アルカリを含んでいてそのアルカリが炭酸ガスと
中和反応を生ずる注入材を用いる事ができる。 In the present invention, the alkaline ground injection material is an aqueous water glass solution, a mixed solution of water glass and a reactant, or an injection material containing an alkali such as an injection solution containing cement or slag, and the alkali causes a neutralization reaction with carbon dioxide gas. can be used.
以上説明したように、この発明は炭酸ガス吹出
ノズルの孔径と炭酸ガス圧を任意に変更し、かつ
開放された吐出口を有する混合室を用いることに
より、混合室内圧力に対応する炭酸ガス吹出量が
簡単に得られ、水ガラス水溶液と炭酸ガスとを一
定の比率で混合して連続的に地盤注入薬液を製造
することができるので、これを地盤に注入したと
きに均一の固結体が得られる。
As explained above, the present invention can arbitrarily change the hole diameter and carbon dioxide pressure of the carbon dioxide gas blowing nozzle, and by using a mixing chamber having an open discharge port, the amount of carbon dioxide gas blowing out corresponds to the pressure in the mixing chamber. is easily obtained, and it is possible to continuously produce a ground injection chemical solution by mixing a water glass aqueous solution and carbon dioxide gas at a certain ratio, so that a uniform solid can be obtained when this is injected into the ground. It will be done.
なお、炭酸ガス流量の制御は炭酸ガス吹出ノズ
ルによつて行うので、操作も簡単となり、薬液注
入の容易性および費用の点で大きな改善ができ
る。 In addition, since the carbon dioxide gas flow rate is controlled by the carbon dioxide gas blowing nozzle, the operation is simple, and significant improvements can be made in terms of ease of chemical injection and cost.
第１図はこの発明の基本概念を示す図、第２図
は炭酸ガス吹出ノズルの孔径0.8mmにおける炭酸
ガス圧と炭酸ガス吹出量との関係を示す図、第３
図は炭酸ガス圧35Kg/cm2におけるノズル孔径と炭
酸ガス吹出量の関係を示す図、第４図はこの発明
の実施例を示す図である。
図中、１は水ガラス水溶液貯槽、２はポンプ、
３は流量計、５は混合室、６は吐出口、６′はし
ぼりバルブ、７は炭酸ガス高圧容器、９は減圧
弁、１０は炭酸ガス吹出ノズル、１０ｂはノズル
孔、１１は加熱器、１２は炭酸ガス留器、１３は
受槽である。
Fig. 1 is a diagram showing the basic concept of this invention, Fig. 2 is a diagram showing the relationship between carbon dioxide gas pressure and carbon dioxide gas blowout amount at a hole diameter of 0.8 mm of the carbon dioxide gas blowing nozzle, and Fig. 3
The figure shows the relationship between the nozzle hole diameter and the amount of carbon dioxide gas blown out at a carbon dioxide pressure of 35 kg/cm 2 , and FIG. 4 is a diagram showing an embodiment of the present invention. In the figure, 1 is a water glass aqueous solution storage tank, 2 is a pump,
3 is a flow meter, 5 is a mixing chamber, 6 is a discharge port, 6' is a squeeze valve, 7 is a carbon dioxide gas high pressure container, 9 is a pressure reducing valve, 10 is a carbon dioxide gas blowing nozzle, 10b is a nozzle hole, 11 is a heater, 12 is a carbon dioxide gas distiller, and 13 is a receiving tank.
Claims (1)
リ性地盤注入材を加圧供給するとともに炭酸ガス
を炭酸ガス吹出ノズルを通して加圧供給して、こ
れら注入材ならびに炭酸ガスを前記混合室内で加
圧混合し、得られる混合液を前記開放された吐出
口から連続して吐出して地盤注入薬液を連続的に
製造することを特徴とする地盤注入薬液の製造方
法。1. An alkaline ground injection material is supplied under pressure into a mixing chamber having an open discharge port, and carbon dioxide gas is supplied under pressure through a carbon dioxide gas blowing nozzle, and these injection materials and carbon dioxide gas are mixed under pressure in the mixing chamber. A method for manufacturing a ground injection chemical solution, characterized in that the obtained mixed liquid is continuously discharged from the open discharge port to continuously produce a ground injection chemical solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14612486A JPS634116A (en) | 1986-06-24 | 1986-06-24 | Manufacture of ground-injecting chemical liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14612486A JPS634116A (en) | 1986-06-24 | 1986-06-24 | Manufacture of ground-injecting chemical liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS634116A JPS634116A (en) | 1988-01-09 |
| JPH0516499B2 true JPH0516499B2 (en) | 1993-03-04 |
Family
ID=15400689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14612486A Granted JPS634116A (en) | 1986-06-24 | 1986-06-24 | Manufacture of ground-injecting chemical liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS634116A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2512667Y2 (en) * | 1988-05-24 | 1996-10-02 | 矢崎総業株式会社 | Electrical junction box |
-
1986
- 1986-06-24 JP JP14612486A patent/JPS634116A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS634116A (en) | 1988-01-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |