2024 Vol. 38, No. 4

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2024, 38(4): 1-1.
[Abstract](78) [FullText HTML] (41) [PDF 7681KB](52)
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2024, 38(4): 1-3.
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Review and Prospect
Analysis on Characteristics and Optimization of Common Drilling Technology in Engineering Investigation
Dong Jiaoshe, Qu Weijia, Zhang Wenzhuo, Liu Gaomin
2024, 38(4): 379-383. doi: 10.3969/j.issn.1007-2993.2024.04.001
[Abstract](257) [FullText HTML] (51) [PDF 719KB](127)
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Combined with the actual situation of engineering investigation, the characteristics of core pipe drilling, threaded drilling, three-wing drilling and impact drilling, such as adapted strata, the drilling process, disturbance and destruction to soil, operation procedure, were analyzed. The advantage...
Technology Development and Innovation
Design Technology Innovation of “Two Walls Integration” Diaphragm Walls in Deep Foundation Pits
Li Wei, Li Yongdong
2024, 38(4): 384-390. doi: 10.3969/j.issn.1007-2993.2024.04.002
[Abstract](192) [FullText HTML] (56) [PDF 3502KB](96)
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A project in Beijing CBD has a foundation pit depth of 36 meters. Due to space limitations, a “two walls integration”+internal support system was adopted to achieve the functions of retaining soil and water in the foundation pit, while completing the construction of the exterior wall of the undergro...
Influence of Shield Close-spaced Construction on Settlement of Bridge Pile and Protective Measures
Lin Xiang, Chen Xiangyu, Wei Jincheng
2024, 38(4): 391-397. doi: 10.3969/j.issn.1007-2993.2024.04.003
[Abstract](133) [FullText HTML] (48) [PDF 6535KB](34)
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During close-spaced tunnel construction passing through existing bridge piles, and based on the field measured data, the change rules of bridge pile settlement, the settlement proportion of each stage, the distribution of soft strata in the tunnel body, and the impact of sleeve valve pipe driving me...
Kalman Filter in Automatic Monitoring Data Noise Processing
Zhang Zizhen, Zhou Honglei, Zhang Jiankun, Jia Hui
2024, 38(4): 398-401. doi: 10.3969/j.issn.1007-2993.2024.04.004
[Abstract](77) [FullText HTML] (37) [PDF 993KB](24)
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The application of Kalman filtering in denoising static leveling and fixed inclinometer raw data was investigated. The results indicated that under slow deformation conditions, Kalman filtering can effectively filter out noise in the original data, provide reliable results, and reveal the true defor...
Characteristics and Prediction Method of Ground Settlement Caused by River Crossing Construction of Shield Tunneling in Soft Soil Area
Lian Tian, Chen Youwen
2024, 38(4): 402-407. doi: 10.3969/j.issn.1007-2993.2024.04.005
[Abstract](125) [FullText HTML] (48) [PDF 1357KB](38)
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River crossing construction of shield tunneling causes loss of soil mass and settlement of surface and upper bridges. Based on a shield construction project with river crossing construction in a muddy soft soil area, the ground and bridge pier settlement characteristics caused by river crossing cons...
Structural Characteristics of Large-angle Cable-stayed Pile
Wang Zhen, Gou Jiaman, Zhang Xiangheng, Zhang Hao, He Jianyong
2024, 38(4): 408-414. doi: 10.3969/j.issn.1007-2993.2024.04.006
[Abstract](111) [FullText HTML] (35) [PDF 2547KB](34)
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The large-angle cable-stayed pile support structure can save space outside the pit, has advantages such as convenient construction and low cost, and is suitable for scenarios where the anchoring space outside the pit is limited. To further study its deformation and stress mechanism, typical medium-d...
Engineering Practice and Application
Remedial Reinforcement Methods for Seepage Damage in Foundation Pits Near Rivers and Streams
Gu Weibin, Guo Bailiang, Cai Qiang, Cai Minghui
2024, 38(4): 415-419. doi: 10.3969/j.issn.1007-2993.2024.04.007
[Abstract](128) [FullText HTML] (47) [PDF 2193KB](46)
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A riverbank foundation pit utilized a triaxial cement-soil mixed wall for water seepage prevention. During excavation, water gushing, sand effusion, and seepage destruction occurred. After several unsuccessful attempts at sealing and remediation, a combined technique of dual-liquid grouting with jet...
The Phased Construction Settlement Analysis of Beijing Fengtai Station Reconsruction and Expansion Project
Wang Yuan, Li Weiqiang, Tang Hu
2024, 38(4): 420-426. doi: 10.3969/j.issn.1007-2993.2024.04.008
[Abstract](111) [FullText HTML] (48) [PDF 17545KB](35)
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During the construction period, it is necessary to ensure that the existing railway transportation line that originally passed through here was not affected. The project of Fengtai station reconstruction was divided into three phases of construction, and construction was carried out in two phases in...
Analysis and Research on Early Closure of Settlement Post-cast Strip for a Type II Residential Land Project
Zhao Can, Zhang Jingyi, Wang Yuan, Li Weiqiang
2024, 38(4): 427-430. doi: 10.3969/j.issn.1007-2993.2024.04.009
[Abstract](99) [FullText HTML] (35) [PDF 3046KB](32)
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A Class II residential land project in Daxing District, Beijing is surrounded by multiple high-rise residential buildings and an underground parking garage. To eliminate the adverse effects of differential settlement, multiple post-cast strips were installed. The existence of post-cast strips seriou...
Impact Analysis of Deep Foundation Pit Construction on Deformation of Adjacent Buildings
Guan Yanli, Li Yuhong, Li Jiayan, Duan Zhichao, Xu Yongbing
2024, 38(4): 431-435. doi: 10.3969/j.issn.1007-2993.2024.04.010
[Abstract](148) [FullText HTML] (52) [PDF 2313KB](62)
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Combined with a foundation pit project in Kunming, numerical modeling was established using finite element software MIDAS GTS. Three numerical simulations were carried out on the surface settlement of the foundation pit and deformation of the neighboring buildings, including no buildings in the surr...
Discussion on Causes of Abnormal Bearing Capacity of Post Grouting at Pile End
Li Yucan
2024, 38(4): 436-439. doi: 10.3969/j.issn.1007-2993.2024.04.011
[Abstract](150) [FullText HTML] (39) [PDF 1086KB](75)
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The bearing capacity of post grouting piles in deep soft soil layers is influenced by multiple factors. Taking three sets of post grouting piles at the pile end of a certain project in Shanghai as the research object, the influencing factors on the bearing capacity of post grouting piles were invest...
Safety Influence of Percussion Drilling Construction on Existing Railway Bridge Piers
Zhu Zhaobin
2024, 38(4): 440-446. doi: 10.3969/j.issn.1007-2993.2024.04.012
[Abstract](107) [FullText HTML] (37) [PDF 1601KB](32)
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To study the dynamic and static responses of existing railway bridge piers under the influence of percussion drilling, the theoretical analysis, numerical simulation, and field test of the influence of percussion drilling on railway bridge piers were carried out. The theoretical analyses show that t...
Stability Analysis of High Fill Retaining Wall Slope in Nujiang Airport
Deng Yiming, Zhang Dongming, Li Yuanbiao, Yang Zhongguo, Peng Haiyan
2024, 38(4): 447-452. doi: 10.3969/j.issn.1007-2993.2024.04.013
[Abstract](124) [FullText HTML] (37) [PDF 3895KB](68)
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Nujiang airport is located in the high intensity seismic mountainous area in the southwest of China.The stability of the slope under the high fill load and seismic load is the key factor restricting the airport construction. The methods of theoretical analysis and numerical simulation were used to a...
Narrow and Deep Foundition Pit Engineering Practice under Conditions of High Permeable Layers in Sensitive Environments
Fang Qing, Chen Sheng, Pan Chen, Liu Xuezhu
2024, 38(4): 453-458. doi: 10.3969/j.issn.1007-2993.2024.04.014
[Abstract](134) [FullText HTML] (40) [PDF 2498KB](42)
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A deep foundation pit is situated in the flood plain of Nanjing. The geological condition is that the flowing plastic mucky silty clay is distributed in the upper part, and a deep gravel layer with high permeability and strong bearing ability is distributed in the lower part. The foundation pit is a...
Stability Analysis and Treatment Measures of Landslidein Quping Village, Tianshui
Zhang Xiongwei, Lai Guoquan, Zhang Qianyi
2024, 38(4): 459-464. doi: 10.3969/j.issn.1007-2993.2024.04.015
[Abstract](138) [FullText HTML] (41) [PDF 8196KB](69)
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The landslide disasters in the north and south mountain areas of Tianshui are extremely developed, and it is extremely challenging to build roads in this area. Taking the analysis and remediation of a large tractive deposit landslide in Quping village, Tianshui as an example, engineering geological ...
Hydrofracturing Ground Stress Testing in Tunnel Survey in Mountainous Area
Tang Hui, Zhang Ruisong, Sun Kai
2024, 38(4): 465-470. doi: 10.3969/j.issn.1007-2993.2024.04.016
[Abstract](117) [FullText HTML] (49) [PDF 1388KB](29)
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The layout of deep buried tunnels and the stability of surrounding rocks are closely related to ground stress conditions. The hydraulic fracturing method is a widely used and mature in-situ stress testing method for deep-buried tunnels. The hydraulic fracturing method was used to test the in-situ gr...
Effective Estimation of Karst Development Intensity in Engineering Projects
Peng Gongxun, Song Jian, Xu Tao, Zhao Xuguang, Liu Xiaoting, Ai Qun
2024, 38(4): 471-476. doi: 10.3969/j.issn.1007-2993.2024.04.017
[Abstract](124) [FullText HTML] (41) [PDF 1678KB](48)
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Based on the spatial distribution characteristics of karst, the horizontal uneven distribution and vertical zonation characteristics of karst were summarized, and their impact on karst rate statistics was analyzed. Based on the investigation data of a buried sewage plant, the vertical zonation of vo...
Geological Risk Analysis of Cable Tunnel Construction
Hao Bing, Liu Yingguang, Li Congyun, Liu Shiyan
2024, 38(4): 477-481. doi: 10.3969/j.issn.1007-2993.2024.04.018
[Abstract](101) [FullText HTML] (46) [PDF 656KB](29)
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The engineering risks that may arise from geological conditions mainly include safety risks, quality risks, construction period risks, environmental risks, and investment risks. Geotechnical engineering survey documents should focus on safety and quality risks. The construction methods and procedure...
Stability Analysis and Optimal Design of a Railway Tunnel Slope During Route Selection
Yuan Xiaobo, Man Jun, Sun Dongze, Li Huiqiang, Xie Meng
2024, 38(4): 482-488. doi: 10.3969/j.issn.1007-2993.2024.04.019
[Abstract](107) [FullText HTML] (26) [PDF 1794KB](50)
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Taking a railway tunnel entrance slope construction site as an example, the slope safety factor at different tunnel entrance elevation, different conditions (slope not excavated, excavation not loaded, loading after excavation), different conditions (natural conditions, rainstorm conditions, earthqu...
Application Research of Elastic Wave CT Method in Karst Exploration
Jia Haipeng
2024, 38(4): 489-493. doi: 10.3969/j.issn.1007-2993.2024.04.020
[Abstract](140) [FullText HTML] (43) [PDF 1667KB](45)
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The underground hidden karst developed in the limestone area has brought great safety hazards to urban engineering construction. Conventional geophysical prospecting methods are difficult to meet the high-precision detection requirements of urban engineering for karst diseases. This research introdu...
Experimental Research
Mechanical Properties and Deformation Characteristics of Single Graded Rockfill Materials
Li Cunzhu, Cao Suqian
2024, 38(4): 494-498. doi: 10.3969/j.issn.1007-2993.2024.04.021
[Abstract](86) [FullText HTML] (34) [PDF 1202KB](30)
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Particle gradation is one of the main factors that affect the mechanical properties of rock-fill materials. To study the mechanical properties and deformation characteristics of the rock-fill materials with single particle size, the large-scale triaxial test and numerical simulation of particle flow...
Experimental Research on Long Spiral Drilling Pressure Grouting Pile of a Project in Xi’an
Dang Zhirong, Li Youjian, Dang Jingmao, Liu Ping, Fan Mingming
2024, 38(4): 499-504. doi: 10.3969/j.issn.1007-2993.2024.04.022
[Abstract](164) [FullText HTML] (62) [PDF 1212KB](50)
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The commonly used technology of bored piles in sand and pebble fields is mud protection wall rotary excavation or reverse circulation drilling technology. This type of drilling technology requires a large amount of mud and high-quality control, which is prone to quality problems such as collapse and...

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